TR201807246T4 - Cooling apparatus. - Google Patents

Abstract

A refrigerant circuit (10) operating in a refrigeration cycle wherein the refrigerant discharged from a compressor (22) is at or above critical pressure. In a process in which the first internal heat exchanger 33a performs a heating operation and, at the same time, when a second internal heat exchanger is disabled, an internal expansion valve 34b associated with the inactive internal heat exchanger 33b is completely closed.

Description

DESCRIPTION COOLING APPARATUS Technical Area This invention is an independent @Etna process of multiple utilization side exchangers. related to the cooling systems it can realize and especially from related to the inactive people Prior Art Refrigerant fluid is circulated from place to place in a cooling cycle to cool the equipment. systems are widely applied, for example to air-conditioning systems. a so-called multi-type air conditioning system where multiple indoor units are connected in parallel to one dlgl unit contains. For example, Japanese Patent Application No. An air conditioning system booted in H08-159590 is a dlSl IIZI a single dlgl unit, each with a heat exchanger (EElkaynagEýan Igulanjörü) and leIgtlElEýla It consists of two internal units each with an internal @Exchanger (Utilization-side Hand-Exchanger). Each branch pipe, one of which is connected to one of the two internal Elje exchangers, its own internal ED It is provided with its own electric motor and working valves together with its heat exchangers. In the air conditioning system, each of the indoor units must be opened by the associated electric motor. By checking, the connection can somehow be realized by @Building application. in a certain way, for example, when two indoor units perform an Eltîlna operation at the same time, with the electric motor working valves. positive cooling fluid to both internal Elevators a predetermined opening to nurtureZIltha AçllfriaktadlE As a result, @two inner EDs room air from the refrigerant fluid flowing through the heat exchangers. saIIB so that the relevant room Alanlümnaktadß On the other hand, for example, only one of the internal units is the Eltîlria process. the valve operated by the electric motor associated with the active indoor unit Result As a result, the refrigerant fluid is only fed to the inner Ellcooler in the active indoor unit, and this internal EP 1 471 316 A1 describes a cooling system according to the preamble of claim 1 Another the cooling system is being opened on JP H09145190 A Find out AçiElamasEl Problem/s that will be solved by this/us Side Only one of the two internal units, such as the up-turned-sandlglE, is intermittently played-mgla, active where the refrigerant fluid in the non-indoor unit heat exchanger accumulates in the liquid, or so-called A phenomenon where refrigerant fluid leaks may occur. If the cooler aklgkan thus gradually slîllâslîsa in the inactive inner @Esanjör, the active inner ED The amount of refrigerant fluid flowing from one place to another in the heat exchanger (in the Eltîlna process) is insufficient. remainingdlB reduces the @Ena capacity of this active indoor unit.

The present invention is made by considering the above point, therefore, one of the objectives is to be active. The purpose of the non-utilization side is to prevent the cooling of the liquid in the heat exchanger.

Problem/sellsman Vasltâ/arÜ My present inventions are described in my grant list 1 Subsidiary claims optional features and deals with preferred structures.

A primary aspect of the invention is that each utilizing side heat exchanger 33a, 33b has an independent In this way, to remove the coolant from the heat exchanger (33a, 33b) A @Ekaynag Ü/an Ellsanjör (23) capable of performing the Eltîlna process and connected in parallel to an EERraynagEyan circuit (21) containing a lelStlElElîlzz) electric motor-operated valves Ell34a, associated with the utility sideEIEIlsangers (33a, 33b) 34b) and the respective drying party Hand Exchangers (33a, 33b) a refrigerant circuit (10) formed to contain the circuit (31a, 31b) Related to the cooling system (10) LeIg-n (22) discharged refrigerant balletII at or above critical balelet YapllândlîllüîlgtE for working in a cooling cycle According to the first aspect of the invention, the refrigeration system is installed on each utilizing side EEZE of the heat exchanger (33a, 33b). Eliilna process (hereinafter referred to as full process) and one or more utilization partyEEEEthe exchanger (33b) stopped the Eltiina process and, at the same time, the remaining utilization By-side glsanjörleri (33a) @Building process (mentioned as partial action from here on) is performing.

Specifically, each individual unit associated with the full process utility EEE elec- tors 33a, 33b By opening the valve D(34a, 34b), which works with an electric motor, at a predetermined angle can succeed. Thus, in full operation, sliZJSt-n (22) discharge refrigerant liquid The utilization side is flowing from each of the utilizing pumps (33a, 33b). ElitallEtnaktadlîJ from the refrigerant liquid flowing through each of the EEEies exchangers (33a, 33b) with it, each utilization biased elevator (33a, 33b) performs a @Building operation.

As a result, every utility-related heat exchanger 33a, 33b, for example, takes a room. EIEInaktadlÜ On the other hand, one or more of the utilizing heat exchangers (33a, 33b) In case the Eltîlna process of the utilization side Hand Exchanger (33b) is stopped, the active each ironing side with electric motor associated with the heat exchanger (33b) operating valve (34b) one minute open/glih adjustmentIel/or fully closed/e, at the same time, a valve (34a) operated with a predetermined angle. As a result, the refrigerant The fluid is essentially only over the utilization-side glideexchangers (33a) in the Eltîlna process. AkmalıdlE and each inactive utilization partyEIlîElesanjörü (33b) is a @itina operation does not perform.

How to reduce the operating valve (34b) angleKllglll with the electric motor in each circuit Thanks to this, when the cooling system performs such a partial operation, the refrigerant liquid gradually accumulates in the inactive ironing sideEIEEEsizer (33b). This In this case, the cooling system, for example, using a refrigerant fluid made from HFC, lelgt-I unloading balletElectric in a cooling cycle to bring to the undercarriage The deactivation of the heat exchanger (33b) of the heat exchanger and the utilizing side is therefore due to the environmental When slîlakll'gilîds down, the coolant in the inactive ironing sideEIEEexchanger (33b) the liquid is gradually intensifying. As a result, the coolant is inactive utilization party in ügg centrifuge (33b) slîllâsß utilization party in this llüna processElgJ refrigerant flowing from one place to another of the heat exchangers (33a). amountEkars-a insufficient çllZbrmakdE the problem of stays In this aspect of the invention, each inactive ironing chamber (33b) has such a To prevent refrigerant liquid leaking, leISt-n (22) discharge refrigerant liquid The title is being set at or above the critic. In other words, this aspect of the invention the refrigerant circuit (10) of the refrigeration system according to the refrigerant. critical ballet ulastlgEl/or a so-called supercritical cycle in a cooling cycle through which it passes).

As a result, in partial operation, the critical state of the refrigerant light It builds up in the party's centrifuge 33b and, therefore, the refrigerant airbag with the usual refrigerant circuit operated in a refrigeration cycle using a liquid klýlasland [gila, in this aspect of the invention, every inactive utilization party with a cooling liquid It does not step in the heat exchanger (33b), so that the inactive utilization side A second aspect of the invention is the cooling system and a separate control according to the first aspect of the invention. (51) of which, in at least one Eltilna transaction, the utilizing party El Ellisanj (33a) and a process in which at least one inactive utilizing partyEEEé centrifuge (33b) coexists associated with at least one inactive ironing side EEéexchanger (33b) while performing valve working with electric motor (34b) completely closes In the second aspect of the invention, by performing the transaction with the above two terms, control vasßlîllsi) each inactive ironing party, powered by the electric motor associated with the ElgE heat exchanger (33b) the valve(34b) is completely closed. gradually accumulates in the side E-lifter (33b). However, in this aspect of the invention, the cooling system is turned up The refrigerant flowing in the utilization side EIEEE exchanger (33b) is significantly less rightfullhand Separately, since the valve (34b) operated with the electric motor is thus completely closed, the refrigerant aklgkan only through the utilization partyEI Iîlîlesanjörs (33a) in @Building flowing Any inactive utilization party that will lead to the consumption of the ElglJasser (33b) leakage of refrigerant can be prevented.

A third aspect of the invention is the cooling system according to the second aspect of the invention, wherein at least one active electric motor-operated valve associated with non-utilization side gg centrifuge (33b) (34b) When a first specified time (tl) has elapsed from the full closure, the control valve (51) the electric motor operated valve(34b) temporarily for a second specified time (t2) openadlHand In the third aspect of the invention, every inactive utilization is biased while the klgl is being processed. Full closure of the operating valve II (34b) with the electric motor associated with the heat exchanger (33b) when the first specified time (tl) has elapsed, control value) with electric motor knock valveIE(34b) opens at a predetermined opening (preferably, a relatively minute Açllîllglm The reason for this is that when the klgtni process continues for a long time, the cooling system even with a supercritical loop like @IllZIand @IllStig the cooler is cascading As a result, each inactive utilization side can be sillylated in the Elgje centrifuge (33b). This For some reason, part of the Zlbulus is in the direction of operation, when the first specified time (tl) has elapsed, the electric motor operated valve (34b) refrigerant fluid inactive heating sideHandHandExchanger Over (33b) only the second specified time (t2) is forcibly opened to flow. Thus, active refrigerant in the hand gel exchanger (33b) second specified time (t2) For the smart, here is the utilization side to deal with the cooling fluid slîlBsmaS. (33b) sükugllîlve ambient slîbkllglüartmakdlAfter, the second specified period (t2) passed, the valve (34b) operated by the electric motor closes completely again. A fourth aspect of the invention is the cooling system with respect to the third aspect of the invention, where each Heat exchanger (33a, 33b) on the utilization side is placed in a room and the room is made of havasEla @Balliülçin yapllândlElJE, associated with the associated heat exchangers (33a, 33b) room leakllkl sensors (44, 45) for slîlaklüîlarlülg llâk rooms, relevant utility partyEIElZl provided around the heat exchangers (33a,33b), and the cooling system also has at least one inactive Algllâd[gll3lîlakl[gla] a correction correcting the first specified time (tl) and/or the second specified time (t2) according to vasltBislIGSZ).

In the fourth aspect of the invention, correction vasßlarüSZ) each inactive ironing partyElîEl According to slîbklfgll, the room slîlaklllîl sensor (45) associated with the heat exchanger (33b) is detected first. corrects the specified time (tl) and/or the second specified time (t2).

More specifically, for example, an inactive utilizing side of the ElîEé centrifuge (33b) When the surrounding room lacquer is high, inactive utilization with refrigerant liquid It is highly unlikely that the party will contract in the EIElicenter (33b). Therefore, such in one case, the period of time when the electric motor-operated valve (34b) is completely closed. by making a correction to increase the first specified time (tl) or the second specified time (t2) can be extended by making a correction to reduce it. As a result, the refrigerant fluid Ironically inactive sideEElIEmasEl inside the heat exchanger (33b) can be avoided.

On the other hand, for example, an inactive ironing side is around the heat exchanger 33b. when the room slîlakllglîld is low, the refrigerant. inactive ironing taralelElZl Therefore, in such a case, the utilization side Reducing the first specified time (tl) with the refrigerant fluid in the ells centrifuge (33b) by making a correction for or by making a correction for increasing the second specified time (t2) can be prevented in advance.

In a fifth aspect of the invention, the refrigeration system separates the associated utilization party exchangers. (33a, 33b) refrigerant liquid density for detecting refrigerant densities with sensing devices 40, 41, 42, 43), wherein at least one inactive utilization party With the electric motor associated with the heat exchanger (33b), the operating valve II (34b) is fully closed. then at least one cooler associated with at least one inactive drying side Hand exchanger (33b) Refrigerant flux detected by the liquid density sensing device(40, 41, 43) when its density exceeds the certain refrigerant liquid density, the control valve) temporarily opening the motor-operated valve (EQ34b) In the fifth aspect of the invention, inactive utilization in performing the clinical operation The electric motor associated with the taralell pump (33b) and the operating valve II (34b) are fully The cooler in the heat exchanger (33b) after each inactive ironing side is closed fluid density related refrigerant fluid density detection devices]40, 41, 43) by being perceived as a coolant (33b) the amount of accumulated refrigerant fluid is perceiving. Afterwards, the detected refrigerant when the alkalinity density exceeds a certain refrigerant liquid density, by means of control) a large amount of refrigerant fluid is in the inactive ironing side in the Ellant chamber (33b) valve running with electric motor, assumed to be accumulated, temporarily opening dlB As a result, the refrigerant in the inactive ironing side EIEE heater (33b) slîliâsmasE can be prevented in advance.

Cooling with respect to any of the first to fifth aspects of the invention system, where the refrigerant circuit (10) is filled with carbon dioxide as refrigerant. happening At the bottom/front of the invention, the refrigerant liquid circuit (10) is supercritical using carbon dioxide. ÇallglnaktadlE in a loop A seventh aspect of the invention is cooling with respect to any of the second to fifth aspects of the invention. The air passing through the system and the separate & related heat exchangers (33a, 33b) is released. Mechanisms for turning on/off the hand/e-related supply openings Here is every on/off mechanism. the relevant utility company's secretary (33b) For supply opening while in the EIElna transaction and the relevant utility partyEE exchanger (33a) made to turn off when inactive According to the seventh aspect of the invention, the refrigeration system includes associated heat exchangers (33a, 33b) is provided with multiple supply openings associated with Separately, each supply power on/off with an on/off mechanism to turn the power on or off In this case, in full operation, the on/off of all supply switchesII the mechanisms are brought to the position, where the utilization utilizing centrifuges (33a, 33b) by Elîllân air supply is provided to rooms and the like. Other On the other hand, in the klini process, each utilization in the lgltîlna process (33a) supply switchesII are turned on/off mechanisms, but every active Hand on/off with supply angles in non-utilizing side heat exchanger (33b) It is brought into position by mechanisms. As a result, every inactive ironing side Elîllsanjörde (33b), refrigerant inside. supply open[giEUan, one room It can be applied to another field such as sliinasuangel. Therefore, every inactive ironing The overall wetness of the side Handshaft (33b) can be suppressed, here this utilization On the other hand, the cooling liquid in the heat exchanger (33b) can be prevented.

Power/Place of this/us In the present invention, each of a plurality of utilizing sided pumps 33a, 33b cooling system, silZISt-n (22) emptied a supercritical coolant that is at or above the critical level. running in loop Thus, every circuit is not working even when the above-mentioned portion is in operation. The electric motor operated valve (34b) in the unit is opened for one minute, manually or completely. when it is off, the refrigerant fluid is in the inactive utilization sidelgja centrifuge (33a, 33b) sMIasma 0Ias[l]]jll]. Therefore, according to the present invention, it can be eliminated that in the ELEna process refrigerant flowing from one place to another at each utilizing side heat exchanger (33a). The amount Elkars-a was insufficient, thus the utilization in the Eltîna process was not biased. It provides sufficient @[Elna capacity of the heat exchanger (33a) Particularly in the second aspect of the invention, the electric motor-operated valve in each circuit (34b) fully vested in the performance of the relevant transaction. Thus, the second of the invention According to the direction, in a @Building operation, all the refrigerant liquids are transferred to the utilization sideElîD-; (33a) is fed so that each inactive ironing sideEll centrifuge (33b) wastes ED salIEmasE can be avoided. Therefore, according to this aspect of the invention, whatever happens in the Eltiina transaction The lîlîlna capacity of the heat exchanger (33a) can be improved and, in turn, the cooling The COP (efficiency coefficient) of the system can be increased.

Separately, in the third aspect of the invention, operate the valve (34b) valve operated by the electric motor. realization option completely closed[g]lEUa only the first specified time (tl) openllBwaktadlE for the second specified time (t2) after elapsed. Therefore, the third According to direction, if partial treatment is continued for a long time, each inactive ironing The refrigerant in the side heat exchanger (33b) can certainly be sieved, this cooling ensures the reliability of the system Specifically, in the fourth aspect of the invention, in the partial process, the first specified time (tl) and the second specified time (t2) for each inactive drying side, the room surrounding the Elîééexchanger (33b) It is corrected according to lelakHgiß. Therefore, according to the fourth aspect of the invention, electric Inactive ironing of the motor-operated valve (34) completely closing time it should not be as long as it causes the refrigerant to melt in the side centrifuge (33b). It is definitely avoidable. AyrlEla, according to the fourth aspect of the invention, with electric motor Flaming valve (34b) EIBaIIII in the relevant inactive drying side Ellisifier (33b) in a long time than necessary to cause wastage can be avoided.

Separately, in the fifth aspect of the invention, in each inactive utilizing side receiver (33b) coolant concentration exceeded the specified refrigerant density, with a fully enclosed electric motor Çallgian vanaslî(34b) provisionally acllüaktadlîl In other words, in the fifth aspect of the invention, amount of refrigerant fluid accumulated in each inactive ironing side heat exchanger (33b) indirectly detected, when the volume of refrigerant fluid is high, the electric motor Valve(34b) operated with openÜBiaktadlEl Therefore, every inactive ironing party In the heat exchanger (33b), the cooling of the coolant can be prevented.

Separately, according to the substrate of the invention, using carbon dioxide as the refrigerant, The refrigerant flowing system is in a supercritical cycle with a relatively low critical temperature. can play.

Separately, in the seventh aspect of the invention, each inactive utilization side centrifuge (33b) supply opening[g]l:klîrni opening/closing mechanism in transaction termsclosed around Therefore, the decrease in the ambient volume of the heat exchanger 33b bastlîllâbilir, here this utilization is in the EEIé centrifugal chamber (33b) otherwise, it is essentially preventable.

Your Shapes Can't Be Opened to the Class pipeline of the circuit pipeline diagram showing clear fluid Pipeline diagram showing effluent fluidEI (Mollier schemas semasLIl A pipelined process that demonstrates refrigerant fluid intelligenceIIE çllglglEI arasEli contains refrigerant liquid density and refrigerant liquid leiakHgilEUa is a graph that shows the behavior of changes. in the refrigerant liquid density and the refrigerant liquid in lelakl[g]Ia is a graph showing the behavior of changes.

Reference Number 1 air conditioning system (cooling system) refrigerant circuit 21 dlSJcircuit (Maynag [Siran circuit) 22 lelgtlHand 23 dlg Hand Exchanger (Eelkaynag Üan Elisanjör) 33a first Inner Elevator (utilization side Hand exchanger) 33b second inner @Exchanger (utilization sidegß-sanger) 34a with first internal expansion valve (valve operated by electric motor) 34b second internal expansion valveEQvalve operated with electric motor) 44 first room lilac lamp (room lehklille sensor) 45 second he-linkedEJsensor (chamber-mountedZJsensor) 51 control agents 52 correction assetsHand Best Practice for Implementing the Invention Detail of the structure of the present invention, in a manner and in relation to figures will opentB According to a construction, a cooling system can cool a room. To achieve this, it establishes a so-called multi-type air conditioning system (1). in Figure 1 As shown, the air conditioning system (1) consists of a coil unit (20) placed in the coils and the first and second interior units (30a, 30b) placed.

DEunit 20 includes an external circuit 21 that establishes an IEEI source circuit. first interior the unit 30a and the second indoor unit 30b a first inner circuit establishing an ironing side circuit (31a) and a second internal circuit (31b) establishing another relevant utility side Hand circuit contains.

Internal circuits (31a, 31b) include a first connecting tube (11) and a second connecting tube (12) It is connected to the dlgl circuit (21) in parallel via In the system (1), the refrigerant fluid is circulated from one place to another in a cooling cycle. The operating system establishes a refrigerant circuit (10). Cooler circuit (10) cooler being filled with carbon dioxide as a fluid The DE circuit (21) consists of a lelStElEIJZZ), a dlgl Ellanger (23), a dlglexpansion valve (24) and includes a four-way selector valve (25). SIKISIEEEQZ) a fully enclosed high- title; domed scroll compressor In other words, the leISt-I (22) capacity is inverted. thus changing the rotational speed of a motor for TIGHTENING can be changed. The DE mover (23) is a cross-fin Z1-and-tube Ell-shaper and a EERaynag [Jan @Esanjör is establishing. DIS @Esanjörde (23) @Eogutucu aklg dlgl is exchanged between air. DE] expansion valve(24) electronic expansion valve Four-way selector valve (25) first to fourth access points. four-way selector valveE(25) first connectionEhoktas siElgt-I (22) to discharge pipe (22a) link, second linkHandpoint from dlgl @Besanjöre (23) link, third link the dotted SEISt-I (22) is connected to a suction pipe (22b) and the fourth connection four-way selector valveE(25) the second and third connection points are in communication with each other, and the first and fourth a location where the connectionEhoktalarIZ is in communication with each other (in the floorlines in Figure 1 location shown) and the first and second connecting points are in communication with each other, and in a position where the third and fourth connected points are in communication with each other (Fig. position shown in the kHel lines in 1) to be interchangeable between yapllândlEllßîaktadE The first internal circuit (31a) is connected to the first connecting pipe (11) at one end and is connected to the other end. with a first branch pipe (32a) connected to the second connecting pipe (12) The first branch pipe (32a) is provided with a first inner coupler (33a) and a first branch pipe (32a). supplied with internal expansion valve (EQ34a) The second internal circuit (31b) connected to the connecting pipe (11) and connected to the second connecting pipe (12) from the other end. Supplied with a second branch pipe (32b) Second branch pipe (32b) with a Second internal Elevator (33b) and a second internal expansion valve (34b) being provided Each of the Inner Elevators 33a, 33b is a cross-blade Hand-tube Elevator and a The utility side establishes the heat exchanger. In each of the Internal Elevators 33a, 33b, the ED the refrigerant fluid and room air are exchanged interchangeably.

First internal expansion valve Ell34a) and second internal expansion valvel3134b) powered by electric motor valves and an electronic expansion valve system, each of which can be controlled by opening is doing. The first internal expansion valve EK34a) is connected to the second connecting pipe (12). Supplied by part of branch pipe (32a) Second internal expansion valve (34b) a section of the second branch pipe (32b) near the second connecting pipe (12). The second internal expansion valve (34b) passes through the second internal Elje exchanger (33b). While the refrigerant fluid can be controlled, the first internal expansion valve (34a) Refrigerant circuit (10) separates a high-side hood; sensor (40) a high-header; with lacquer The sensor (41) consists of a first refrigerant liquid alkaline Klsensor (42) and a second refrigerant liquid. Supplied with lebkIllZl sensor (43) High-side bale sensor (40) SliZlSt-n (22) measures the discharged refrigerant with the ballet. high-bacillus; lelaklllZ] sensor (41) siElStIEiElöhn (22) measures the humidity of the discharged refrigerant fluid. First The refrigerant fluid leakylELZ1 sensor (42) is immediately removed from the first internal E-exchanger (33a) Then the first inner heat exchanger (33a) is discharged to measure the refrigerant liquid liquor. is placed. Second refrigerant liquid lelakllE sensor (43) from the second inner @Ihsanjör (33b) Refrigerant immediately after washing. LelakI[g'lIEöto drink the second inner Iîlîéo (33b) çllZIgEa is inserted.

The first indoor unit (30a) is simultaneously a first chamber approx. Supplied with slîlakllllîlsensor (44) First chamber lilacllllesensor (44) first inner ED the heat exchanger (33a) is surrounded by the air conditioned unit. The second indoor unit (30b) is simultaneously the second inner E3 heat exchanger (33b) with a second chamber lilac-Cl1 sensor (45) nearby The second chamber heat exchanger (45) the second inner Elevator (33b) the air surrounding slîlakll'gilßlgllâmdedß According to this construction, air conditioner (1) refrigerant circuit (10) sllZlSt-n (22) discharged refrigerant in a cooling cycle where the fluid is at or above the critical pressure (super-critical cycle) operating in each air conditioning system (1), each first indoor unit (30a) and the second internal unit (30b) can be operated independently. Specifically, the air conditioner (1) an operation (from this) in which the second indoor unit 30b is deactivated referred to as such Personal Operation) or that both the First Inner unit (30a) and the Second Inner unit (30b) differentEIodaIarEllgîllllglElbir process (hereinafter referred to as the @Ena process) can perform.

Air conditioner (1) at the same time internal expansion valves II (34a, 34b) angleIJZI [ElarIEto control The controller (50) is supplied with a control device (ZISO) as a control (51) and a correction vasißsEKSZ). Internal expansion valvesTwo (34a, 34b) Details of the control device II (50) control on the toggles will be disclosed later. - Operation Davranlglî-l- Then, an explanation of the operating behavior of the air conditioner (10) according to this construction. The air conditioning system (1) is a single-room operation of each indoor unit (30a, 30b) and each it can perform a process where the indoor unit 30a, 30b cools a room. air conditioning system (1) An opening of the Emina operation is provided. In the Enha operation, the four-way selector valve (25) above mentioned full @Building operation and klglni @Building operation optionally are selected in the position shown in Figures 2 and 3 for their realization.

In full @Building operation, the first Internal expansion valveE(34a) and the second Internal expansion valveE(34b) opening to a predetermined openingEraktadlEl as shown in Figure 2, SUZEILEJEDQZ) Condensed to or above the critical bale, refrigerant liquid four-way selector valve (25) and first connecting pipe (11) to battery first branch pipe (32a) and to the second branch pipe (32b) The refrigerant flowing into the first branch pipe (32a) is from the first inner Elevator (33a) flowing in the first inner Elîé centrifuge(33a), the cooler flowing into the room @almdedß Other in other words, it performs an Eitîlna operation to magnify the first inner Ellanger (33a) into the chamber, Thus, the first internal ED with Eliînaktad is located in the room where the first processing unit (30a) is installed. Refrigerant flowing from the heat exchanger (33a) after the first internal expansion valve (34a) It flows into the second connecting tube (12) On the other hand, the refrigerant flowing into the second branch pipe (32b) is the second internal ED. In the second EEE exchanger (33b), the refrigerant flowing from the heat exchanger (33b) weather Ellallürnaktadü In other words, Emlagltinak the second inner Ellsanger (33b) into the room. performs a @Build operation for the room where the second processing unit (30b) is installed Elülnaktadlîl Second internal expansion of the refrigerant flowing from the second internal heat exchanger (33b) valves (34b) flow into the second connecting pipe (12). Refrigerant fluid fluid expansion valves (24) combined in the second connecting pipe (12) submerged while passing, and then flows through the dEI concentrator (23) in the DEI Ell centrifuge (23) refrigerant fluid dlg air takes air for evaporation Dlgl ED The refrigerant fluid flowing through the heat exchanger (23) passes through the four-way selector valve (25) and then sllZlSt-I (22) is drawn into it. SllZISt- (22), refrigerant liquid, critical baleca or SUZlStlEllBwaktadB on top In the Klîlni Eltîlna process, the air conditioner (1) is the @Building process of the first inner IgIElna heat exchanger (33a). and, at the same time, the second internal Emina heat exchanger (33b) Eltiina transaction a transaction that it has stopped, or that the second internal @Etna Ellsanjör (33b) has executed the ElIîlna transaction. and, at the same time, a process in which the first internal IgElevator 33a stops the Emina operation. is performing. Here, according to Figure 3, usually only the first inner @Interceptor (33a) An explanation is provided that it performs the ElElna transaction. In the Klglni @Building process, the controllerII (50) control vasltâslîlßi) first internal expansion valveIlZI(34a) open to a predetermined opening&second internal expansion valveIlZl(34b) completely closed position. Without the first internal expansion valve(34a) angle[g]IT, The first internal ED Exchanger (33a) performs the Eliilna operation, such as pre-opened.

On the other hand, when the second internal expansion valve (34b) is completely closed, the refrigerant fluid The second internal expansion valve does not pass through the valves 34b. Therefore, the refrigerant fluid is used in the second inner It does not pass through the air exchanger (33b), so that the second internal exchanger (33b) is switched off. Second inner @Ilesanjör (33b) such circuit dlgEblBiklglia, second inner ED with cooler gradually accumulates in the heat exchanger (33b). However, at the same time, partial ElElna In the process of this construction, the air conditioner:[1), sllZISt-n (22) discharged cooler aklgkanl balebElkritik balek;at the supercritical cycle where it is above or below it is played in the supercritical cycle. Thus, the second The ambient air of the second inner heat exchanger (33b) through the circuit dlîbluk (33b) Even if the lelakllgi hand falls, the second inner EE] is the coolant in the heat exchanger (33b). This way, for example, in a subcritical cooling cycle using HFC Refrigerant flow in the second inner Ellcooler (33b) with a working air conditioning system Slıllâsma is still significantly reduced.

This point is explained more qualitatively than Figures 4 and 5, Figure 4 The P-H diagram of a supercritical cycle using carbon dioxide shows IlZ, and Figure 5 It shows the P-H diagram of a typical critical-subcooling cycle using HFC.

In the usual cooling cycle shown in Figure 5, the SIEISt-n discharge refrigerant liquid balely lower than critical bale in a certain way, for example, a cooling liquid SilZJSt-[A ballet of 2.7 MPa after ethane, a ballet of 80°C in the cooling cycle It has a refrigerant fluid density (pl) of 85 kg/m3 with wet light. Condensation in the cooler inner Elite exchanger, after condensation of the refrigerant fluid 2.7 A baleca of MPa, a lilacHgb of 37°C and a refrigerant of 996 kg/m3 has a fluid density (pz), in other words, in the usual cooling cycle, interior Intermediate density ratioEQpz/pl) is 11.72 dlE On the other hand, in this construction shown in Figure 4, sEgt-n discharge cooler aklSkanI balletCritical head-on Jbl In this cycle, after leISt-lK, 10 MPa per Eta, 80°C It has moisture and a refrigerant density (pl) of 221 kg/m3. Equal in refrigerant inner exchanger, refrigerant 10 MPa after IEEaIlEhiasl a head of having fluid density (pz) tadlîl In other words, this is super in a critical cycle, the refrigerant fluid density (pz) in the core of the internal heat exchanger and Density ratioEl(p2/p1) between the refrigerant fluid concentration (pl) at the inlet 3.23 it's worth it As can be understood from the above, before and after the inner Ellanger in the usual loop density ratiompz/pi) compared with the cooling cycle according to this construction It shows that the density in the ordinary cycle is proportional to the cooling according to this structure. three times or more higher than that of the normal in the cooling cycle, the refrigerant is concentrated in the inactive inner Ell centrifuge[glIa, has a high density to reduce the volume and thus inactive internal EE! hlîllEb is fed in the heat exchanger. Thus, in the usual cooling cycle, the inactive interior On the contrary, EBaIlEhllglIa in this doHandlElnada, the refrigerant fluid inactive inner exchanger even, it has a relatively low density and thus its volume is not reduced by 0.

Thus, the cooler aklgkan is not fed much to the inner heat exchanger, thus the inactive The coolant flow in the internal exchanger is still relatively low. However, when such a kliini Suha transaction is continued for a long time, the second inner Ellsanjör (33b) slıllâsan cooler alg for the kElni Eltîlna operation with the second internal expansion valve II (34b) fully closed. startllfhasian when the first specified time (tl) elapses, the control value in this done (51) second internal expansion valveIE(34b) open for one minute for second specified time (t2) opentadlEl Thus, the second inner Ellscanner (33b) is lehkllglIEl/e its ambient lelakllglIEl For arttlElnak, one minute of smart air refrigerant flowing through the second inner Ell centrifuge (33b) As a result, the refrigerant liquid slîllâsmaslîl in the second inner heat exchanger (33b) can be eliminated. Then, when the second specified time (t2) has elapsed, control vasßsEQSi) internal expansion valve (IEa34b) closes completely again AyrEla, kEmi Eltîlna, the second internal expansion valve II (34b) at the beginning of the operation is fully closure Biaslsila second inner refrigerant quantity in second inner mixer (33b) The EDexchanger (33b) is connected to the ambient temperature. In other words, the second internal ED If the chamber in which the heat exchanger (33b) is loaded is relatively low, 33b if it is high, the cooling water is still low. To deal with it, this control device II (50) correction vasltâsEQSZ) inactive internal (33b) Check the room light sensor (45) to illuminate the surrounding room. and the above specified first specified time (tl) and the second specified time (t2) perceived room slîlaklfg'l. corrects accordingly.

Specifically, the klêini EIElna process is initiated by the second chamber lebklllg sensor (45). if the detected room slîlakllgluli is relatively low, the correction is vaslßsEllSZ) the first specified time (tl) is lowering. AyrlEla, second room lelaklllZl sensor after the first specified time (tl) has elapsed (45) if the room perceived by the party is lelakllglEssentially low, correction is vaslüsEKSZ) second increased the specified time (t2) The time period when the second internal expansion valve II (34b) is completely closed is klgh, thus refrigerant battery in the second inner Elevator (33b) All corrections made to the first specified period (tl) and to the second specified period (t2) one or both can be applied.

On the other hand, the klglni @Building process on the side of the second room sEbkllKl sensor (45) If the detected room slîlakl[g]l]i is relatively high, the correction is vasißsljlSZ) the first specified time (tl) arttlElnaktadE Ayrlîb, second room sir-:climate sensor after the first specified time (tl) has elapsed (45) if the perceived room volume is relatively high, correction vaslßsEKSZ) second reduces the specified time (t2). With the results of these fixes, klgrni @Building The time period when the second internal expansion valve II (34b) is open is closed, thus the inactive second internal exchanger (33b EBaIlErnasII wasted. not causing - Built [Building Effects - This was done, Ena, each of the multiple internal Elevators (33a, 33b) independently At the supercritical pressure where it is at or above the alkaline BtII critical pressure Thus, the inactive internal expansion valve (ZK34b) with the klglni Eltîlna process ornament is completely Even when the hood is IE, the refrigerant is in the inactive inner ED heat exchanger (33b) Thus, according to this structure, in the inactive inner Eljecenter (33b) refrigerant heat loss can still be significantly reduced. Conclusion As a consequence, insufficiency of refrigerant in the inner heat exchanger (33a) in the Elülna process can be avoided, thus providing sufficient EHna capacity to the internal @Exchanger (33a) in the Emina process. Separately, in this structure, the operation expansion valve(34b) in the unit without circuitry is Eltîlna It is completely closed in the Realization of the Transaction. Thus, according to this done, inactive internal heat exchanger (33b) EIZBallEmasII wasted. from causing preventable. This increases the COP of the air conditioner(1).

AyrlEla, in this construction, the realization of the klglni Emina transaction is actually completely completely closed internal expansion valveE(34b) only after the first specified time (tl) has elapsed Opened for the specified time (t2) Thus, according to this done, the klêrni transaction also takes a long time. when maintained for a period of time, the refrigerant in the inactive internal El El-air exchanger (33b) Aklgkan slîüasmaslî can definitely be eliminated, this is definitely in the internal manager (33a) in the Eltiina process. It prevents the lack of refrigerant liquid amount.

Ayrlîla, in this construction, in the partial Elülna operation, the first specified period (tl) and the second specified time time (t2) according to the room temperature around the inactive internal EEI heat exchanger (33b) is being corrected. Thus, according to this structure, the internal expansion valve (34b) is fully refrigerant accumulator to the internal circulator (33b) whose closing time is not active It can be avoided if it is long enough. AyrlEla, according to this structure, internal expansion valve II (34b) inactive internal heat exchanger (33b) AklSkandan Elîlsallühiasll wasted can be avoided. This air conditioner raises its (1) COP even higher.

- Modification of Internal Expansion Valve Hand Opening[gIEUa Control As above, in the klgmi Eltîlna process, the internal expansion valve in the circuit-circuit unit (33a, 33b) after completely closed, this internal expansion valve(34b) It is open or closed according to the duration (tl) and the second specified period (t2). Expansion valve II (34b) is opened instead of such control on BrasE, internal expansion valve II (34b) acllE1asE$ can be controlled as shown in Figure 6.

According to this modification, some in the Eltîlna process, the high-side header; side the sensor (40) Detected refrigerant-fluid ballet high-pressure heatsink sensor (41) side Etlan detected refrigerant lilac[g]Il the first refrigerant slîaklllZJsensor (42) detected by cooler aklgkan lebkHglElve second cooler aklg Detected refrigerant liquid lethglEl control device. (50) is sent. After IEUa, control devicelJSO) according to the values perceived by these sensors (40, 41, 42, 43), Refrigerant fluid flowing from the inner Elje exchanger (33b), which is not active during the Eltîlna process determines the density. In other words, each of the sensors (40, 41, 42, 43) is active. To detect the refrigerant density in the internal heat exchanger (33b) without refrigerant fluid density detection device.

Specifically, for example, the klglni Eltîlna operation in the above-made al-Elna by performing the control valve EKXi) first, the second internal expansion valve II (34b) is opened. It brings it to a completely closed position. If the Klgtni Ellilna process continues for a long time, In the second inner heat exchanger (33b), the refrigerant air is gradually slîllâsmdedE To deal with this, in this modification the control vaslßsEl(51) is the second inner ED that is not active. refrigerant fluid density in the heat exchanger (33b) refrigerant determines slîlakllgllan. Specifically, for example, the second inner ED The heat exchanger (33b) is in a looped state, the controllerEl(50) is the second internal ED. high-side header in the circuit-circuit refrigerant density in the heat exchanger (33b) refrigerant battery detected by sensor (40) Refrigerant fluid detected by (41) parties. and the second refrigerant lelaklllZl the refrigerant is detected by the sensor (43) according to the lelakllglI. Asli, high-side ballet; Refrigerant fluid detected by the sensor (40) Second Inner EE! The refrigerant in the heat exchanger (33b) can be essentially the same as the alkalinity AyrlEla, high- ballet; refrigerant temperature detected by the lilacllKJ sensor (41) second inner ED refrigerant flowing to the heat exchanger (33b) lelakllglElve second refrigerant liquid lebklllZl refrigerant fluid stability detected by the sensor (43) from the second inner heat exchanger (33b) dlghrlîlakan cooler fluid can be assumed as slîlakllglEb. So, let's take this in Refrigerants and solvents with countersink refrigerants, internal ED The average lebkl[glE] of the refrigerant fluid in the heat exchanger (33b) can be determined. Postliitja, this average refrigerant liquid slîlakllglEUan and the above refrigerant liquid slîlakllglEUan, refrigerant average refrigerant density in the second inner @Elesanjör (33b) can be determined.

The refrigerant fluid density thus obtained is accumulated in the second inner Elje exchanger (33b). The amount of refrigerant fluid gives an indication of the amount. Afterwards, the sensors (40, 41, 43) Algllâdiglîvalues, refrigerant fluid density, second internal expansion valve II (34b) fully closed, mainly a partial ma transaction specified after the start of the transaction. If the refrigerant exceeds the fluid density, the control in this modification is vasltâslîl(51) second internal EEI detects that a large amount of refrigerant fluid has accumulated in the heat exchanger (33b) and temporarily The second internal expansion valve (34b) opens. As a result, in the second internal exchanger (33b) the cooler aklgkan süllâsmaslî can definitely be eliminated.

On the other hand, the circuit dglîblßkllglEl/e of the first inner Elevator (33a) (33b) in a partial lîlEina transaction in which an ElElna transaction is performed, the first internal unit in the circuit E-exchanger (33a) refrigerant flow-density high-side nozzle; of the sensor (40), high-header, lilacllle sensor (41) and first refrigerant lilac lilac sensor (42) algllâd[determined according to glutenvalues. In this case, the refrigerant fluid density exceed the specified refrigerant density[glia, first internal expansion valveEa34a) first internal Opened BiaktadlE to process the refrigerant liquid leaching in the EL exchanger (33a) - Modification Effects- In this modification, the refrigerant fluid density control in the inactive inner Elevator (33b) When the fluid density is lowered[g], completely closed, the power expansion valvel134b) temporarily In other words, in this modification, the accumulated in the inactive inner @Esanjör (33b) The amount of refrigerant fluid is determined manually and the amount of refrigerant fluid is determined when large, the internal expansion valveE(34b) is opened. Therefore, inactive internal ED In the heat exchanger (33b), the cooling of the coolant can be prevented.

Also, in this modification, the refrigerant circuit (10) kEtni @Building process sßsßt is a supercritical one. in the loop so that in one of the inactive Internal E-Exchangers (33a, 33b) the cooling fluid can be significantly reduced.

Moreover, the refrigerant circuit (10) operates in the supercritical cycle as above, the average refrigerant density in the inactive internal Ellcell (33b) is more accurate can be obtained in one go. Specifically, as shown for example in Figure 8, in a typical example (the high-side pressure of the refrigerant circuit, the critical header; the subnet a working air-conditioning system) inactive inner Ells centrifuge from the inlet of the chiller fluid Density (or refrigerant lelakIHZJ) changes, taking into account the changes It can be seen that their behaviors have weak] linearity. The reason for this is in the example, to step the refrigerant flow in the inactive inner heat exchanger. condensationIlEl Thus, the amount of refrigerant fluid accumulating in the inner @Essenger of Ietlogru refrigerant at multiple points (for example, three or more points) to achieve it is necessary to slîbkllgilültîlalgüâm the algkan density (or the refrigerant. This sIElakllKJ say-Girttlîilnaktadß of sensors On the contrary, this YapHând Enada (33b) in the inactive inner @Exchanger as shown in Figure 7 taking into account the changes in the refrigerant fluid density (or the refrigerant fluid sIElakHlZl), It can be seen that the behavior of the changes is highly linear. This The reason is that it is built in Handl Elnada critical baleen or above it in the refrigerant algkan inner Ell centrifuge. (33b) accumulates, and thus, through the refrigerant fluid inlet in the inner Elje exchanger (33b). It does not work for the ÇElglEla stage. Thus, according to this made, in the above two amendments internal ED, by determining the densities of refrigerant flowing downstream and downstream as shown Behavioral control of the refrigerant fluid density from the inlet of the heat exchanger (33b) to a pre-registered information table (for example, refrigerant change in densityHand/or cool liquid can be accurately estimated according to information on Afterwards, internal expansion vasIlEl (34a, 34b) rated coolant fluid density In the inactive internal heat exchanger (33b), the refrigerant akEkan slîllâsmasüljaha can be definitively avoided.

According to the above-mentioned method, in the air-conditioning system (1), the ironing side Ellg Elevators (33a, 33b) It can be provided with an opening/closing mechanism that can be closed. SeparateEla, top-down kBni Eltîlna process sßsIa, only with inactive ironing sideEIîlZlassager (33b) The associated supply opening/closing mechanism can be closed by hand. In this case, refrigerant accumulating in the inactive utilization sideEIIîElector (33b). supply angleEIiglEban room area. escape can be avoided. Therefore, the utilization partyEEEl the ambient temperature of the heat exchanger (33b) can be reduced, where this utilization is by EIED In the heat exchanger (33b), leakage of refrigerant fluid can be essentially prevented. If a wrapping material such as packaging, an opening/closing mechanism such as a shutter. around provided-sa, this supply angleEliglllEl tiEbllýken is preferred because the click feature has been developed. is being done.

Industrial Applicability As can be seen from the above two explanations, in the present invention, more than one utility is involved. EE! A cooling system where the heat exchangers can perform @Building process in a connected way. refrigerant slîllasmasl in inactive heat exchangers can be used as countermeasures

Claims (2)

REQUESTS 1. A cooling system (1), comprising: multiple utilizing side circuits (31a, 31b), an EEsource Elyan circuit (21) including a lelStlEEZQZ) and an EEsource Elyan circuit (21) connected to the associated extruder with the respective heatsinks the refrigerant circuit (10) formed to include the associated valves Eq34a, 34b) and the associated ironing stage elevators (33a, 33b); each ironing-side heat exchanger (33a, 33b) is capable of performing an Eltina process to release EE from the refrigerant-side heat exchanger (33a, 33b) in a donated manner; in at least one said Eltilna process, while the drying party is performing a co-existing operation of the EIE heat exchanger (33a, 33b) and at least one inactive ironing side heat exchanger (33a, 33b), while at least one inactive drying party is performing a co-existing heat exchanger, each room air from a cooling liquid placed in a room. made for lißalluinasu Associated rooms lacquered room temperature sensors (44, 45) to inform the associated utilisation side, provided around the heat exchangers (33a, 33b) refrigerant circuit (10) siESt-n (22) discharged refrigerant at least one cooling cycle on top of a critical baleet II When a first specified time (tl) has elapsed over the fully closing of the electric motor-operated valve (34a, 34b) associated with the inactive Utilization side Hand Exchanger (33a, 33b), the control over the electric motor-operated valve (34a, 35b) will temporarily be switched on for a second specified period ( t2) opening cooling system (1) separated at least one inactive utiliza It is characterized in that the chamber lelakllK1 sensor 44, 45 associated with the ion side exchanger 33a, 33b includes a correction vaßsEdSZ that corrects the first specified time (tl) and/or the second specified time (t2) according to the detection. 2. The cooling system according to claim 1, where the cooling circuit (10) is used for the cooling circuit.