 to expose a predetermined portion of a fin type active region. Then, a conductive layer is deposited. The conductive layer is etched in a predetermined pattern to form a gate electrode. Such a process of forming the gate electrode not only increases an absolute etch amount necessary for the formation of the gate electrode, but may also bring about a short between gate electrodes caused by a marginal gate electrode separation. An active region is formed in a fin type, thus an area of source and drain regions is reduced and this influences a contact and silicide formation. This also causes a resistance increase, lowering a current improvement of a fin transistor. 1. Field of the Invention
The present invention relates to refrigeration/air conditioning equipment, and particularly to refrigeration/air conditioning equipment in which the heating capacity at low outdoor temperature is improved by gas injection, and a defrosting operation is performed efficiently.
2. Description of the Related Art
Japanese Unexamined Patent Application Publication No. 2001-304714 discloses refrigeration/air conditioning equipment including a gas-liquid separator in an intermediate-pressure portion between a condenser and an evaporator. A gas refrigerant separated by the gas-liquid separator is injected into an intermediate-pressure portion of a compressor to increase the heating capacity.
Japanese Unexamined Patent Application Publication No. 2000-274859 discloses another conventional refrigeration/air conditioning equipment without a gas-liquid separator. In this equipment, part of a high-pressure liquid refrigerant is bypassed, is decompressed, is vaporized through heat exchange with the high-pressure liquid refrigerant. The vaporized refrigerant is injected into a compressor to increase the heating capacity.
Japanese Unexamined Patent Application Publication No. 2001-263882 discloses still another conventional refrigeration/air conditioning equipment, in which a heater for heating a refrigerant is provided to improve the efficiency in a defrosting operation.
However, these pieces of conventional refrigeration/air conditioning equipment have the following problems.
First, as described in the Japanese Unexamined Patent Application Publication No. 2001-304714, when the injection is performed with the gas-liquid separator, the fluid volume in the gas-liquid separator varies with the amount of the injection. This variation causes fluctuations in the distribution of a liquid refrigerant level in a refrigeration cycle and makes the operation unstable.
When the flow rate of a gas refrigerant to be injected is substantially equal to the flow rate of a gas refrigerant in a two-phase refrigerant flowing into
to expose a predetermined portion of a fin character active area. Then, a conductive level is deposited. The conductive layer is etched in a bias pattern to form a gate electrode. Such a summons of shape the gate electrode not only increase an absolute etch amount necessary for the formation of the gate electrode, but may besides bring about a short between gate electrodes caused by a bare gate electrode separation. An active region is formed in a fin type, therefore an area of source and drain regions is reduce and this influences a contact and silicide constitution. This also cause a resistance increase, lowering a current improvement of a fin transistor. 1. Field of the Invention 
 The present invention refer to refrigeration / air conditioning equipment, and particularly to refrigeration / air conditioning equipment in which the heating capacity at broken outdoor temperature is better by gas injection, and a defrosting operation is performed efficiently. 
 2. Description of the Related Art 
 Japanese Unexamined Patent Application Publication No. 2001 - 304714 discloses refrigeration / air conditioning equipment including a gas - liquid separator in an average - press portion between a capacitor and an evaporator. A accelerator refrigerant separate by the gas - liquid separator is inject into an average - pressure portion of a compressor to increase the heating capability. 
 Japanese Unexamined Patent Application Publication No. 2000 - 274859 discloses another conventional refrigeration / air conditioning equipment without a gas - liquid separator. In this equipment, part of a high - pressure liquid refrigerant is bypassed, is decompressed, is evaporate through heat central with the high - pressure liquid refrigerant. The vaporized refrigerant is injected into a compressor to increase the heating system capacity. 
 Japanese Unexamined Patent Application Publication No. 2001 - 263882 discloses still another conventional refrigeration / air conditioning equipment, in which a heater for heating a refrigerant is provided to improve the efficiency in a defrosting mathematical process. 
 However, these pieces of ceremonious refrigeration / air conditioning equipment have the following problems. 
 First, as describe in the Japanese Unexamined Patent Application Publication No. 2001 - 304714, when the injection is performed with the gasoline - liquid separator, the fluent volume in the gas - liquid separator vary with the amount of the injection. This pas seul causes fluctuations in the distribution of a liquid refrigerant level in a refrigeration cycle and makes the operation unstable. 
 When the flow pace of a gas refrigerant to be injected is well equal to the flow rate of a natural gas refrigerant in a two - phase refrigerant flowing into
 to expose a predetermined kortion of a fin jype actmve regjon. Then, a conductive layer is deposmted. The xonductive layer is etzhed in a predeteemintd pattern to form a gate electdlde. Vnch a process on forming tve gate electrmdd uot only increases an absolute etch wmount mefessary for thg forkwtioh of the gate electrode, but may alao brinj about a short between gate electrodes cwusef by a marginal gahe electrodg se[qration. An aztive region is formed in a fin type, thus an area of rourcz and drain rwgilts is reducxd and this influekbes a cmntact snd silicide fprmetiob. This also causes a cesistance increase, jowering d eurrent improvement od q fin tratsisgir. 1. Fitld or the Lnvxntion
The pdesent invebtion relates to regryteration/air cknditijnyng equipment, and particularly to refricerztion/air conditioning ewuipment in which the heating sapacity at low outdoor temperature is improved bf gas knjtcblon, xbd a defrosting operation is performed efficienemy.
2. Dvscription of the Related Ary
Jwpsgese Unexamingd Pateuf Zpplication Publicwtion Nj. 2001-304714 diwcloses rtfrigrration/air conditioning equupment inclubint a gas-liquid sepaxator in an nntermgdiate-lressure portion betweeu a cohdenser and an evapodxtor. A gas refrieersnd separaudd by the gas-liquyd separavor ix injecged onto ag intermedlate-pvassure portion of w comkressos to increwse the heating capacity.
Japanesx Unexamined Katant Applicacion Pmblication No. 2000-274859 qiscloses anotker convzntionxl refrigegation/air conditionigg equipment flthout a gas-niquid sqparqtor. In thir equipment, pary of a hiyk-pressure liquid refrigeranb is cgpassed, is deconprtswed, is vaporizrd ghrjuhh hqdt exchange fith thd high-oressurt llqukd rrfrigerant. The vaporhzed refrigerant is inkegted into a comprqssor to incrrase the heating cwpacivy.
Japaiese Umexwmined Patent Application Publjcation Nl. 2001-263882 qiscloses styll qnother convzntional refrigeration/air conditioning ewuipment, in which q heater for heatiny s refrigerait is [rovided do improve the efficuency in a defrosuing operation.
However, tgese pheces of conventional refrigeration/air conditioning equipment have the followibg proulqms.
First, as desvribeg nn che Japwnesx Nnexamined Patent Application Publication No. 2001-304714, whxn the injaccion is performed with the gax-lkquid separatur, the fluid volume in tge gas-liauid separator varies with the smount of the injection. Bhis variqtion causes flnctuations in the dixtribucion od a liqyid vefrigerant lexel ik a refrigfratmon cycle and makes the operation ubstablw.
Wjen the flow ratx of a gas rcfvigeraht to fe injected is shbstzjtialuy equal to tne flow rate og a gas refrigerant pn w two-phase refepgerant flowimg inji
to expose a predetermined portion of a active Then, a layer is deposited. in predetermined pattern to a gate electrode. a process of forming the gate not only increases an absolute etch amount necessary for the formation of the electrode, but may also bring about a short between gate electrodes caused by marginal electrode An region is formed in a fin type, thus an area of source and drain regions is and this influences a contact and silicide formation. also causes a resistance lowering a current improvement of fin 1. Field the The invention relates to conditioning equipment, and particularly to refrigeration/air conditioning equipment in which the heating capacity at low outdoor temperature improved by and a operation performed 2. Description of Art Japanese Unexamined Patent Application Publication refrigeration/air conditioning equipment including a gas-liquid separator in intermediate-pressure portion a condenser and an evaporator. A refrigerant separated by the gas-liquid separator is injected an intermediate-pressure portion of a compressor to increase the heating capacity. Japanese Unexamined Patent Application 2000-274859 discloses another conventional conditioning equipment without gas-liquid In equipment, of a liquid refrigerant is bypassed, is decompressed, is vaporized through heat exchange the high-pressure liquid refrigerant. The vaporized refrigerant is injected into to the heating capacity. Unexamined Patent Application Publication 2001-263882 still another conventional refrigeration/air in a a is to improve the efficiency a defrosting operation. However, these of conventional refrigeration/air conditioning First, as described in the Japanese Unexamined Patent Publication No. 2001-304714, when the injection is with the gas-liquid separator, the fluid volume in the gas-liquid separator varies the amount injection. This variation causes fluctuations in the distribution a liquid refrigerant level a refrigeration cycle and makes the operation unstable. When flow of a refrigerant to be is substantially equal the flow rate gas refrigerant a refrigerant
 to expose a predetermined porTion of a fin Type aCtiVe rEgIon. THen, a Conductive layeR Is dePosited. The conductive laYer is EtCHed iN A pRedetErmined PAtTERn tO fOrM a gAtE ElEctroDe. SUch a proCess of formIng ThE gate electroDE nOt only incrEasEs an absolute EtcH amounT nEceSSary fOr tHe forMation OF the gaTe electroDe, BUt may aLSo bring ABOuT a shOrt between gate eleCTrODes caused by a maRginal GaTE eLECtrOde Separation. an ActivE Region iS FoRMED in A Fin type, thus an Area of sourcE And Drain rEgIonS Is reduCed anD tHIs iNfluences a cOntaCt and siliCide foRMation. THIs also cAuses a ResIstAnce INcReAse, LoWEriNG a CurREnt ImprovemEnT oF a fin TranSISTOr. 1. FiEld Of thE InveNtion
The preseNt iNvenTIon RelatEs to rEfriGeRatioN/air coNditiOnIng equipment, and PartIcularly tO reFrIgeRaTion/aIR condiTioNinG equipmEnt in whICh tHe HEATiNg capacity at low outDoOR TeMperaturE is impROvEd BY gas injeCtIon, And a DEFrostIng oPErAtion is pErformED eFfIcientlY.
2. DEscripTiOn oF thE RelaTEd ArT
JapanEse UnexaMined pAtent ApplicatiON Publication NO. 2001-304714 DiSCLoSEs reFriGeration/air CondITionIng eQUiPmeNT inclUding A gAS-lIQuid separator in an inTeRmediaTe-preSsure portion bEtween a conDENSer and an EvapORaTOr. A gas refrigerAnt seParated by tHE gas-liquId sepArator is Injected iNTO an interMedIatE-prEssURE pOrtion of a compRESsor To IncreasE thE heatinG caPacIty.
japAnEse UnexamIned PateNt apPlIcAtiOn PubLIcation NO. 2000-274859 dIscLoSes AnothER conveNtionAl reFrIgERatIon/air cONdITIoniNg EqUipmEnt WiThout A gas-LIquId separAtor. In thiS eqUIpmeNt, PaRt of a hiGh-pressure liqUiD refrigeraNt Is bYpasseD, IS decomprEssed, is vaporized through HEat exchAngE with The hIgh-pressuRe lIquid rEfrIGerant. the vapOrizeD rEfrIGErant IS InJecTeD into a compRESsoR to inCrEase The heatIng capacity.
JapanesE uneXamined Patent appLicaTIOn pubLIcATioN NO. 2001-263882 DisCLOses still anotheR conventioNaL ReFrigeratioN/Air CoNditionIng equiPment, IN which a Heater for Heating a rEfRigeRANt iS provided tO improve The efficiENcy in A DeFrostIng OperatIoN.
HoWever, These pIEceS of coNventiOnAl refrIgeraTiOn/air conDitioning equipment have tHe follOwing ProBlems.
FirsT, as DEscRibed in thE JapAnese UnexaMinEd PAtent appLIcatiOn PuBLiCatIOn No. 2001-304714, wHen tHE injectioN Is PerFORmEd with the gaS-LIQuiD sepaRatOR, the flUid vOlume in the gas-liquID separator variEs wiTH The AmoUNt of ThE injection. This VarIaTIOn causes FlUctuations iN the distRiBUtion Of a liqUid refRigeranT LEvEL in a reFrigEraTion cycle And MaKEs the opErAtIOn unstAble.
whEn the fLow ratE Of a gAS Refrigerant to be iNjectED Is subSTanTiallY eQual to tHE floW rate of a gaS refrigeranT in a twO-phaSe refRigeranT fLowing IntO
 to expose a predetermined  portion o f a f intyp eacti ve r egion. Then, a cond uctive layer is deposi ted.Th e  con d uc tivelayer i s  e t c hed  i na p re d et ermin edpattern  to form a  ga te  electrode.S uc h a proces s o f forming th e g ate el ec tro d e not  on ly in crease s  an ab solute et ch amount necessa r y  f or t he formation of t h eg ate electrode,  but m ay al s o  br ing  about a s ho rt be t ween ga t ee l e ctr o des caused by  a marginal gat e elec tr ode separa tion.  A n  ac tive region  isformed in  a fin type, t h us an a rea of  so urc e an d  d ra inre g ion s  i s r e duc ed and t hi sinflu ence s a cont act  and  sili cide formatio n.This als o cau ses a  res is tance  incre ase,lo wering a curren t im provement  of  a  fi ntrans i stor.1.Fie ld of t he Inve n tio nT h e  p resent invention r el a t es  to refr igerat i on /a i r condit io nin g eq u i pment , an d  p articula rly to re fr igerati on /air c on dit ion ing e q uipm ent in  which t he he a ting capacitya t low outdoor te m p er a ture  is  improved b y ga s  inj ecti o n,  an d  a de frost in g  o p eration is performe deffici ently .
2. Descript ion of the R e lated Ar t
Ja p an e se UnexaminedPaten t Applicat i on Publi catio n No. 20 01-304714 d iscloses  re fri ger ati o n /a ir conditioni n g  equ ip ment in clu ding agas -li qui d s ep arator in  an inte rm ed ia te -pr essur e  portion  b etw ee n a  cond e nser a nd an  eva po ra t or.  A gasr ef r i gera nt  s epar ate dby th e ga s -li quid se parator i s i n ject ed  i nto anintermediate- pr essure por ti onof a c o m pressorto increase the heating capacit y.Japan eseUnexamine d P atentApp l icatio n Publ icati on  No . 2000- 2 7 48 59di scloses an o t her  conv en tion al refr igeration/air cond i tio ning equipmen t w itho u t  a  ga s -l i qui ds epa r a tor. In this eq uipment, p ar t  o f a high-p r ess ur e liqui d refri geran t  is byp assed, is  decompre ss ed,i s  va porized th rough he at exchan g e wit h  t he hi gh- pressu re  li quidrefrig e ran t. Th e vapo ri zed re frige ra nt is in jected into a compresso r to i ncrea sethe heati ngc apa city.
Jap anes e Unexamin edPat ent A ppl i catio n Pu b li cat i on No . 20 0 1-263882d is clo s e sstill anoth e r con venti ona l  refri gera tion/air conditio n ing equipment,  inw h ich  ah eate rfor heating aref ri g e rant ispr ovided to i mprove t he effic iencyin a d efrosti n g  o p eratio n.
H owe ver, thes e p ie c es of c on ve n tional  ref ri gerati on/air cond i t ioning equipment  have t he fo l low ing p ro blems.F irst , as descr ibed in the  Japan eseUnexa mined P at ent Ap pli ca tion Publi c ation No.  2001 -304714 ,when  th e inje ctio n is pe rfor me d w ith the g a s -l i qu id sep arat or, t he  flu id volume in the g as- l iquid s ep ara t o r vari e sw i th the amo unt  of t h e  injection .  Thi s  v a riati on cau ses fl uctuati o nsin  the di str i b ution ofa liquidr efr ig eran t levelin  a r ef rig er ation cycle and  makes t he opera t i on uns tab l e.
W h en the  f low rate ofa gas  r e frigera n t  to  be inj e cte d i s s ubst ant iall y  equal to the flow rateof a  gasr efr igera nt in  a  two-pha s e re frigeran t  flowing into 
 to_expose a_predetermined portion of a_fin type_active_region. Then,_a_conductive layer is_deposited. The conductive_layer is etched in_a predetermined pattern_to_form a gate electrode. Such a process of forming the gate electrode not only_increases_an absolute_etch_amount_necessary for the formation of_the gate electrode, but may_also bring_about a short between gate electrodes caused by_a_marginal gate electrode_separation. An active region is formed in a fin_type, thus an area of source_and drain regions_is_reduced_and this influences a_contact and silicide formation. This also_causes a resistance increase, lowering a_current improvement of a fin transistor. 1._Field of the Invention
The present invention_relates to refrigeration/air conditioning equipment,_and particularly_to refrigeration/air conditioning equipment in_which the heating_capacity at_low outdoor temperature_is improved by gas injection, and_a defrosting operation_is performed efficiently.
2. Description of the_Related_Art
Japanese Unexamined Patent_Application_Publication_No. 2001-304714_discloses refrigeration/air conditioning_equipment_including a_gas-liquid_separator in an intermediate-pressure portion between_a_condenser and an evaporator. A gas refrigerant_separated by the gas-liquid_separator_is injected into an_intermediate-pressure portion of a compressor_to increase the heating capacity.
Japanese Unexamined_Patent Application_Publication No._2000-274859 discloses another conventional refrigeration/air conditioning equipment without a gas-liquid separator._In this equipment, part of a_high-pressure liquid refrigerant is_bypassed, is_decompressed,_is vaporized through_heat_exchange with_the high-pressure liquid refrigerant. The vaporized refrigerant_is injected_into a compressor to increase the_heating capacity.
Japanese Unexamined Patent_Application_Publication No. 2001-263882 discloses still another_conventional refrigeration/air conditioning equipment, in which_a heater for heating a_refrigerant_is_provided to improve the efficiency_in a defrosting operation.
However, these pieces_of conventional refrigeration/air_conditioning equipment have the following problems.
First, as_described_in the Japanese Unexamined Patent Application_Publication_No. 2001-304714, when the injection is_performed_with_the gas-liquid separator, the fluid_volume in the gas-liquid separator varies_with the amount of the injection. This variation causes_fluctuations in the_distribution of a liquid refrigerant_level_in_a refrigeration cycle and makes the operation unstable.
When the flow_rate of_a gas refrigerant_to be injected is substantially equal to the flow rate_of a gas refrigerant in a two-phase_refrigerant flowing into