CN106461300A - Chiller system - Google Patents

Abstract

In this chiller system, one unit from a plurality of chillers is designated as a master unit chiller. From among the plurality of chillers, a chiller that requires defrost operation makes a request, to the master unit chiller, for defrost operation. The master unit chiller approves defrost operations for a predetermined, specific number of units from among the chillers that requested defrost operations on a first-come, first-served basis. Chillers waiting for defrost operation make a request, to the master unit chiller, for defrost operation at prescribed intervals. If there are a plurality of chillers waiting for defrost operations, the master unit chiller approves the next defrost operation for chillers in the order from the highest number of defrost operation requests or the longest request time.

Description

Cooling system

Technical field

The present invention relates to a kind of cooling system of the cooling device (chiller) being connected with multiple stage heat-pump-type, wherein, this is cold But device is adjusted to the temperature of the temperature adjustment circulation fluid as thermal medium by the condensation heat of cold-producing medium or heat of evaporation.

Background technology

In the past it is known that following structure：In heat pump, when making to carry out the cold-producing medium-sky of heat exchange between cold-producing medium and air When gas-heat exchanger plays a role as evaporimeter, carry out defrosting operating (defrost working), to remove because of extraneous gas The conditions such as temperature and be attached to the frost (referring for example to patent document 1) on the pipe arrangement in refrigerant-air heat exchanger.In detail and Speech, patent document 1 discloses that following structure：In defrosting operating, make indoor heat converter expansion valve fully closed, do not make cold-producing medium To indoor heat converter flowing, carrying out heat absorption by waste heat recoverer from engine cooling water makes cold-producing medium evaporate.

On the other hand, for by the condensation heat of cold-producing medium or heat of evaporation to temperature adjustment (the such as air-conditioning as thermal medium With) cooling device of heat-pump-type that is adjusted of the temperature of circulation fluid, similarly exist and carry out defrosting operating and (remove attachment removal Frost on the pipe arrangement in refrigerant-air heat exchanger) situation, in the cooling of the cooling device being connected with multiple stage heat-pump-type During defrosting operating, in system, in the case of carrying out defrosting operating, it is not circulated the temperature adjustment of liquid, if therefore Cooling device (especially all cooling devices) more than regulation number of units in the same period carries out defrosting operating, then cannot fully enter The temperature adjustment of row (or cannot be carried out completely) circulation fluid.

With regard to this point, patent document 2 discloses that following structure：Send defrosting to work as from each chilling unit (cooling device) Only make the chilling unit (cooling device) of number of units set in advance execute the mode of defrosting operating to every during the request of operating simultaneously Refrigeration plant (cooling device) the output defrosting of regulation number of units allows signal (with reference to the 0104th section of patent document 2), can be with In the case that the available number of units of Shi Jinhang defrosting operating is more than 2, for defrosting request signal, until it becomes available number of units is Only export defrosting and allow signal (with reference to the 0111st section of patent document 2).That is, patent document 2 discloses that until can enter simultaneously To ask sequencing to allow defrosting operating till the available number of units of row defrosting operating.

Prior art literature

Patent document

Patent document 1:No. 4257351 publications of Japanese Patent No.

Patent document 2:Japanese Unexamined Patent Publication 10-122604 publication

Content of the invention

But, although patent document 2 discloses till the available number of units that can carry out defrosting operating to ask simultaneously Sequencing allows defrosting operating, but and be not disclosed defrosting operating standby in cooling device priority each other.

Therefore, it is an object of the invention to provide a kind of cooling system, it is connected with the cooling device of multiple stage heat-pump-type, energy Enough till regulation number of units with ask sequencing determine in the case of allowing defrosting operating defrosting operating standby in Cooling device priority each other.

The present invention provides a kind of cooling system to solve above-mentioned problem, is connected with the cooling device of multiple stage heat-pump-type, This cooling device by the condensation heat of cold-producing medium or heat of evaporation to as thermal medium temperature adjustment with the temperature of circulation fluid adjust Section, above-mentioned cooling system is characterised by, any 1 cooling device in above-mentioned multiple stage cooling device is designated as the cold of main frame But device, the cooling device needing defrosting operating in above-mentioned multiple stage cooling device is asked above-mentioned to the cooling device of above-mentioned main frame Defrosting operating, the cooling device of above-mentioned main frame in the cooling device requesting above-mentioned defrosting operating, first ask in order Predetermined regulation number of units cooling device allow above-mentioned defrosting operating, above-mentioned defrosting operating standby in cooling device Above-mentioned defrosting operating is asked to the cooling device of above-mentioned main frame with specified period, the cooling device of above-mentioned main frame is transported in above-mentioned defrosting Turn standby in cooling device there is multiple stage in the case of, with the request number of times of above-mentioned defrosting operating or request time from big to Little order allows above-mentioned defrosting operating next time.

In the present invention, following manner can be illustrated, the cooling device of above-mentioned main frame is for the request of above-mentioned defrosting operating Number of times or request time identical cooling device each other, are allowed with identiflication number order from small to large or order from big to small Above-mentioned defrosting operating next time.

In addition, the present invention also provides a kind of cooling system, it is connected with the cooling device of multiple stage heat-pump-type, this cooling device leads to The temperature crossing the condensation heat or heat of evaporation of the cold-producing medium circulation fluid to the temperature adjustment as thermal medium is adjusted, above-mentioned cooling system System is characterised by possessing the controlling organization that above-mentioned multiple stage cooling device is carried out with action control, in above-mentioned multiple stage cooling device The cooling device of defrosting operating of needing above-mentioned defrosting operating is asked to above-mentioned controlling organization, above-mentioned controlling organization is for requesting In the cooling device of above-mentioned defrosting operating, predetermined regulation number of units first asking in order cooling device allows above-mentioned Defrosting operating, above-mentioned defrosting operating standby in cooling device with specified period to above-mentioned controlling organization request above-mentioned defrosting fortune Turn, above-mentioned controlling organization above-mentioned defrosting operating standby in cooling device there is multiple stage in the case of, with above-mentioned defrosting fortune The request number of times or request time turning order from big to small allows above-mentioned defrosting operating next time.

Invention effect

According to the present invention, in being connected with the cooling system of cooling device of multiple stage heat-pump-type, can be until specifying platform Till number with ask sequencing allow defrosting operating in the case of determine defrosting operating standby in cooling device each other Priority.

Brief description

Fig. 1 is the system diagram of the Sketch of the cooling system representing embodiments of the present invention.

Fig. 2 is the general block diagram of one of cooling system cooling device.

Fig. 3 is to represent the general block diagram carrying out the cooling device of cooling operating condition cooling down operating.

Fig. 4 is to represent the general block diagram carrying out the cooling device of heating operating condition heating operating.

Fig. 5 is the general block diagram representing the cooling device of defrosting operating state carrying out defrosting operating.

Fig. 6 is to represent the number of units of cooling device is being set in the cooling system in the case of 8, carries out from each cooling dress Put the defrosting operating request of cooling device to main frame and the cooling device of main frame permitting to the defrosting operating of each cooling device The concept map of of the state permitted or forbid, is to represent that the cooling device of main frame allows sequentially to ask in request defrosting operating 2 early cooling devices of order carry out defrosting operating and forbid the defrosting fortune of 3 cooling devices more late than this 2 cooling devices The figure of the state turning.

Fig. 7 is to represent the number of units of cooling device is being set in the cooling system in the case of 8, carries out from each cooling dress Put the defrosting operating request of cooling device to main frame and the cooling device of main frame permitting to the defrosting operating of each cooling device The concept map of of the state permitted or forbid, is the defrosting operating of cooling device 2 shown in Fig. 6 cooling device of main frame The defrosting fortune of request number of times sequentially 2 cooling devices in big standby of request number of times in defrosting operating is allowed after end Turn and the state of defrosting operating of inhibition request number of times 1 cooling device less than 2 cooling devices figure.

Fig. 8 is to represent the number of units of cooling device is being set in the cooling system in the case of 8, carries out from each cooling dress Put the defrosting operating request of cooling device to main frame and the cooling device of main frame permitting to the defrosting operating of each cooling device The concept map of of the state permitted or forbid, is the defrosting operating of cooling device 2 shown in Fig. 7 cooling device of main frame The figure of the state of defrosting operating of remaining 1 cooling device is allowed after end.

Fig. 9 is the fortune representing the temperature adjustment ability of cooling system and each cooling device in the example shown in Fig. 6 to Fig. 8 Turn the sequential chart of state.

Figure 10 is to represent the control action that Host Based cooling device controls and carries out to the defrosting of each cooling device The flow chart of the flow process of.

Specific embodiment

Hereinafter, it is explained with reference to embodiments of the present invention.

Fig. 1 is the system diagram of the Sketch of cooling system 1 representing embodiments of the present invention.

Cooling system 1 shown in Fig. 1 is configured to be connected in parallel to the cooling device 100 of multiple stage heat-pump-type.Additionally, following, Sometimes the cooling device of heat-pump-type is only called cooling device.

Specifically, cooling system 1 possesses multiple stage cooling device 100 (1)～100 (n) (n is more than 2 integer) and follows Ring liquid loop 200.Each cooling device 100 (1)～100 (n) is set as identical structure.Therefore, each cooling device 100 (1)～ The rated output of 100 (n) is set as all same.Additionally, in the following description, sometimes to each cooling device 100 (1)～100 (n) Only mark reference 100.

Cooling system 1 is also equipped with：Circulation fluid loop 200, it is laid on temperature adjustment subject area (the such as air-conditioning omitting diagram Subject area) and it is provided as the temperature adjustment of the thermal medium circulation fluid circulation with (such as idle call)；And circulating pump 300 (1)～300 N (), it is directed to every cooling device of the multiple stage cooling device 100 (1)～100 (n) in circulation fluid loop 200 to arrange and to make to follow Ring liquid circulates in circulation fluid loop 200, is configured to flow in circulation fluid loop 200 by circulating pump 300 (1)～300 (n) The temperature of dynamic circulation fluid is adjusted.Here, as circulation fluid, as long as the liquid playing a role as thermal medium is so Can be just any one liquid, typically can illustrate water.But, be not limited to this, circulation fluid can also be for example Liquid containing anti-icing fluid in water.

Circulation fluid loop 200 is made up of following part：Flow into main 210, it makes circulation fluid fill to flowing in multiple stage cooling Put the direction flowing of 100 (1)～100 (n)；Flow into arm 211 (1)～211 (n), it makes from the circulation fluid flowing into main 210 Shunt respectively towards multiple stage cooling device 100 (1)～100 (n)；Flow out main 220, it makes circulation fluid to from multiple stage cooling device The direction flowing that 100 (1)～100 (n) flow out；And flowing out arm 221 (1)～221 (n), it makes from multiple stage cooling device The circulation fluid of 100 (1)～100 (n) collaborates respectively towards flowing out main 220.

Specifically, flow into arm 211 (1)～211 (n) respectively by inflow main 210 and each cooling device 100 (1) The circulation fluid inflow side of～100 (n) corresponding branch and each cooling device 100 (1)～100 (n) connects.In addition, flow out propping up Pipe 221 (1)～221 (n) respectively by the circulation fluid outflow side of each cooling device 100 (1)～100 (n) and flow out main 220 with The corresponding merging part of each cooling device 100 (1)～100 (n) connects.Flow into arm 211 (1)～211 (n) and flow out arm It is respectively equipped with circulation fluid on either one (in this example for flowing out arm 221 (1)～221 (n)) in 221 (1)～221 (n) The circulating pump 300 (1)～300 (n) of circulation fluid circulation is made in loop 200.

In the cooling system 1 possessing said structure, by circulating pump 300 (1)～300 (n) circulation circulation fluid from Flow into main 210 to be allocated to each cooling device 100 (1)～100 (n) via each inflow arm 211 (1)～211 (n), each It is conditioned temperature in cooling device 100 (1)～100 (n).Temperature be conditioned after circulation fluid from each cooling device 100 (1)～ 100 (n) is flowing out interflow in main 220 via each outflow arm 221 (1)～221 (n), in the temperature adjustment pair in circulation fluid loop 200 As circulating in region (such as air-conditioning subject area).Flow into main 210 and flow out the load-side of main 220 for example via not shown Heat exchanger be attached respectively and constitute closed-loop path.

Fig. 2 is the general block diagram of one of cooling system 1 cooling device 100.Additionally, figure 2 illustrates inflow arm One of 211 (1)～211 (n) flow into arm 211, illustrate that flowing out one of arm 221 (1)～221 (n) flows out arm 221, and, one of circulating pump 300 (1)～300 (n) circulating pump 300 is shown.

Cooling device 100 is driven to the compressor 10 of compression refrigerant, by condensation heat or the heat of evaporation of cold-producing medium To adjust the temperature of circulation fluid.

That is, cooling device 100 possesses：Compressor 10, cold-producing medium is sucked/discharges by it；Refrigerant-air heat exchanger 20, it makes to carry out heat exchange between cold-producing medium and air (specifically extraneous gas)；For refrigerant-air heat exchanger 20 Refrigerant-air heat exchanger fan 30；Expansion valve 40, its cold-producing medium after making to be compressed by compressor 10 expands；Refrigeration Agent-circulation liquid heat exchanger 50, it makes to carry out heat exchange between circulation fluid and cold-producing medium；Engine 60, it drives compressor 10； And engine exhaust heat recover 70, it reclaims the waste heat of engine 60, and this cooling device 100 is able to carry out heating fortune described later Turn, cooling operates or defrosting operating (defrost working).In this example, expansion valve 40 includes closed first expansion Valve 41 and closed second expansion valve 42.

Compressor 10 can also be the equipment that multiple compressors are connected in parallel, similarly, refrigerant-air heat exchange Device 20 can also be the equipment that multiple stage refrigerant-air heat exchanger is connected in parallel.

Specifically, cooling device 100 is also equipped with refrigerant loop 110 for cold-producing medium circulation, for entering to engine 60 The chilled(cooling) water return (CWR) 120 of engine cooling water circulation of row cooling, the circulating pump 130 of chilled(cooling) water return (CWR) 120 and control dress Put 140.

Compressor 10, refrigerant-air heat exchanger 20, cold-producing medium-circulation fluid heat friendship are provided with refrigerant loop 110 Parallel operation 50, expansion valve 40 and engine exhaust heat recover 70.

Refrigerant loop 110 possesses cross valve 111, bridge circuit 112, high-pressure gas refrigerant path 113a, first low Calm the anger cryogen path 113b, first gas refrigerant passage 113c, the first refrigerant passage 113d, high pressure liquid refrigerant Path 113e, the first low-pressure gas-liquid two phase refrigerant path 113f, second refrigerant path 113g, second gas refrigerant passage 113h, the second low-pressure gas-liquid two phase refrigerant path 113i and the second low-pressure refrigerant gas path 113j.

Cross valve 111 is configured to according to carrying out the indication signal of self-control device 140 and (Fig. 2 illustrates in the first connection status State) switch and the second connection status between, in the first connection status, by inflow entrance (downside in Fig. 2) with a side even Interface (left side in Fig. 2) is connected and is connected the opposing party's connector (right side in Fig. 2) with flow export (upside in Fig. 2) Connect, in the second connection status, inflow entrance is connected with the opposing party's connector and side's connector is connected with flow export.By This, cross valve 111 allows hand over the flow direction of cold-producing medium.

Bridge circuit 112 possesses four check-valves (first check-valve 112a, second check-valve 112b, the 3rd check-valves 112c and the 4th check-valves 112d), by including the of two check-valves (first check-valve 112a and second check-valve 112b) One check-valves row 1121 and include remaining two check-valves (the 3rd check-valves 112c and the 4th check-valves 112d) second Check-valves row 1122 are constituted.

First check-valve row 1121 are by first check-valve 112a and second check-valve 112b so that the flow direction of cold-producing medium Become identical mode to be connected in series.Second check-valve row 1122 by the 3rd check-valves 112c and the 4th check-valves 112d so that The flow direction of cold-producing medium becomes identical mode and is connected in series.And, first check-valve row 1121 and second check-valve arrange 1122 are connected side by side with making the flow direction of cold-producing medium become identical mode.

In bridge circuit 112, the tie point between first check-valve 112a and second check-valve 112b is set to first Intermediate connection point P1, the tie point between first check-valve 112a and the 3rd check-valves 112c is set to flow out tie point P2, will Tie point between 3rd check-valves 112c and the 4th check-valves 112d is set to the second intermediate connection point P3, by second check-valve Tie point between 112b and the 4th check-valves 112d is set to flow into tie point P4.

The outlet of compressor 10 is connected by high-pressure gas refrigerant path 113a with the inflow entrance of cross valve 111.First The flow export of cross valve 111 is connected by low-pressure refrigerant gas path 113b with the suction inlet of compressor 10.First gas are freezed One side's connector of cross valve 111 is connected by agent path 113c with side's connector of refrigerant-air heat exchanger 20.First Refrigerant passage 113d will connect in the middle of the first of the opposing party's connector of refrigerant-air heat exchanger 20 and bridge circuit 112 Contact P1 connects.High pressure liquid refrigerant path 113e is by the outflow tie point P2 of bridge circuit 112 with expansion valve 40 (specifically Say the first expansion valve 41 and the second expansion valve 42) side connect.First low-pressure gas-liquid two phase refrigerant path 113f will be constituted The opposite side of the first expansion valve 41 of expansion valve 40 is connected with the inflow tie point P4 of bridge circuit 112.Second refrigerant path Second intermediate connection point P3 of bridge circuit 112 is connected by 113g with side's cold-producing medium of cold-producing medium-circulation liquid heat exchanger 50 Mouth connects.Second gas refrigerant passage 113h by the opposing party's cold-producing medium connector of cold-producing medium-circulation liquid heat exchanger 50 with The opposing party's connector of cross valve 111 connects.Second low-pressure gas-liquid two phase refrigerant path 113i will constitute the of expansion valve 40 The opposite side of two expansion valves 42 is connected with the refrigerant inflow port of engine exhaust heat recover 70.Second low-pressure refrigerant gas lead to Road 113j is by the midway of the refrigerant outflow port of engine exhaust heat recover 70 and the first low-pressure refrigerant gas path 113b Junction of two streams P5 connects.Here, by the downstream (compressor 10 of junction of two streams P5 in the first low-pressure refrigerant gas path 113b Side) it is set to collaborate path 113b1.

First expansion valve 41 and the second expansion valve 42 all can adjust open according to the indication signal carrying out self-control device 140 Degree.Thus, the first expansion valve 41 and the second expansion valve 42 can adjust the internal circulating load of the cold-producing medium in refrigerant loop 110.In detail For thin, the first expansion valve 41 and the second expansion valve 42 have all been connected in parallel closed multiple expansion valve.By being set to this Plant structure, the first expansion valve 41 and the second expansion valve 42 can combine open expansion valve to adjust in refrigerant loop 110 The internal circulating load of cold-producing medium.

In the present embodiment, cooling device 100 is also equipped with separator (oil separator) 81, hydraulic accumulator (accumulator) 82 and reservoir (receiver) 83.

Located at high-pressure gas refrigerant path 113a, the lubricating oil of the compressor 10 that cold-producing medium is contained within enters separator 81 Row separates and via valve 81a (specifically magnetic valve), the lubricating oil after separation is back to compressor 10.Hydraulic accumulator 82 sets In the interflow path 113b1 of the first low-pressure refrigerant gas path 113b, using in the cold-producing medium playing a role as evaporimeter-follow The cold-producing medium of non-evaporating completely in ring liquid heat exchanger 50 or the refrigerant-air heat exchanger 20 that plays a role as evaporimeter Liquid carries out separating.Reservoir 83, located at high pressure liquid refrigerant path 113e, stores the high pressure from bridge circuit 112 temporarily Liquid refrigerant.

The path of the engine cooling water that chilled(cooling) water return (CWR) 120 structure coupled engines 60 is cooled down, possesses first segment temperature Type switching valve 121, second section temperature type switching valve 122, radiator 123, outflow pathway 124a, flow into path 124b, first Path 124c is to fifth passage 124g.

Outflow pathway 124a is by the inflow entrance of the flow export of engine 60 and first segment temperature type switching valve 121 (in Fig. 2 Downside) connect.Flow into path 124b to be connected the flow export of radiator 123 with the inflow entrance of engine 60.First path 124c Inflow by side's flow export (upside in Fig. 2) of first segment temperature type switching valve 121 and second section temperature type switching valve 122 Mouth (left side in Fig. 2) connects.Alternate path 124d is by the opposing party's flow export of first segment temperature type switching valve 121 (in Fig. 2 Right side) it is connected with the inflow entrance of radiator 123.Third path 124e is by side's flow export of second section temperature type switching valve 122 (upside in Fig. 2) is connected with the cooling flow inlet of engine exhaust heat recover 70.Fourth passage 124f is by the second thermostat The opposing party's flow export (right side in Fig. 2) of type switching valve 122 is connected with junction of two streams P6 of the midway flowing into path 124b.5th The mouth that cooling water flow out of of engine exhaust heat recover 70 is located at compared with junction of two streams P6 by path 124g with flow into path 124b Junction of two streams P7 of upstream side connects.Circulating pump 130 is in flowing into path 124b located at inflow entrance and junction of two streams P6 of engine 60 Between.Circulating pump 130, according to the indication signal carrying out self-control device 140, makes engine cooling water follow in chilled(cooling) water return (CWR) 120 Ring.Engine exhaust heat recover 70 belongs to refrigerant loop 110 and chilled(cooling) water return (CWR) 120 both sides.

First segment temperature type switching valve 121 is less than, in the temperature of engine cooling water, the first temperature of regulation predetermining In the case of (such as 71 DEG C), the engine cooling water from engine 60 is made to flow towards second section temperature type switching valve 122, On the other hand, in the case that engine cooling water is more than the first temperature, make the engine cooling water court from engine 60 Flow to radiator 123.Thus, chilled(cooling) water return (CWR) 120 can make to send out in the case that engine cooling water is less than the first temperature Motivation cooling water circulates to second section temperature type switching valve 122, on the other hand, is more than the first temperature in engine cooling water In the case of, so that engine cooling water is circulated to radiator 123.

Second section temperature type switching valve 122 is less than lower than the first temperature predetermining in the temperature of engine cooling water In the case of the second temperature (such as 60 DEG C) of regulation, make the engine cooling water court from first segment temperature type switching valve 121 To the junction of two streams P6 both sides flowing of engine exhaust heat recover 70 and inflow path 124b, on the other hand, in engine cooling water Temperature be more than second temperature in the case of, make engine cooling water from first segment temperature type switching valve 121 towards Motivation waste-heat recoverer 70 flows.Thus, chilled(cooling) water return (CWR) 120 can be less than the situation of second temperature in engine cooling water Under, make the junction of two streams P6 circulation to engine exhaust heat recover 70 and inflow path 124b for the engine cooling water, on the other hand, Engine cooling water be second temperature less than the first temperature in the case of, so that engine cooling water is returned to engine exhaust heat Receive device 70 to circulate.

Furthermore it is possible to engine cool is detected by the temperature sensor (omitting diagram) located at chilled(cooling) water return (CWR) 120 The temperature of water.

Constitute circulation fluid loop 200 flows into arm 211 by the circulating fluid entrance of cold-producing medium-circulation liquid heat exchanger 50 Connect with the branch corresponding with cooling device 100 flowing into main 210 (with reference to Fig. 1).Constitute the outflow in circulation fluid loop 200 Arm 221 circulating fluid of cold-producing medium-circulation liquid heat exchanger 50 is exported and flow out main 220 (with reference to Fig. 1) with cooling The corresponding merging part of device 100 connects.Cold-producing medium-circulation liquid heat exchanger 50 belongs to refrigerant loop 110 and circulation fluid loop 200 both sides.

Compressor 10 is connected with engine 60 via clutch 11.Clutch 11 is according to the instruction carrying out self-control device 140 Signal, takes and transmits the connection status of driving force from engine 60 to compressor 10 and cut off driving force from engine 60 to pressure The dissengaged positions of the transmission of contracting machine 10.

Cooling device 100 is also equipped with first pressure sensor 151, the first temperature sensor 161, second pressure sensor 152nd, second temperature sensor 162 and speed probe 170.

First pressure sensor 151 and the first temperature sensor 161 are respectively arranged on interflow path 113b1, and detection interflow is logical The pressure and temperature of the cold-producing medium in the 113b1 of road.Second pressure sensor 152 and second temperature sensor 162 are respectively arranged on Two low-pressure refrigerant gas path 113j, the pressure of cold-producing medium in detection the second low-pressure refrigerant gas path 113j and temperature Degree.Speed probe 170, located at engine 60, detects the rotating speed of engine 60.

Circulation fluid loop 200 possesses inflow circulation fluid temperature sensor 231 and flows out circulation fluid temperature sensor 232.

Specifically, flow into circulation fluid temperature sensor 231 located at flowing into arm 211, detect to cold-producing medium-circulation fluid heat The temperature of the circulation fluid (specifically flowing into the circulation fluid in arm 211) that exchanger 50 flows into.Flow out circulation fluid TEMP Located at flowing out arm 221, the circulation fluid that detection is flowed out from cold-producing medium-circulation liquid heat exchanger 50 (specifically flows out and props up device 232 Circulation fluid in pipe 221) temperature.

Control device 140 according to the detection signal from various sensors, to refrigerant loop 110, chilled(cooling) water return (CWR) 120 And the driving in circulation fluid loop 200 is controlled.Thus, cooling device 100 can adjust flowing in circulation fluid loop 200 Circulation fluid temperature.

Specifically, control device 140 passes through compressor 10 to from the first low-pressure refrigerant gas path 113b suction Cold-producing medium is compressed, and the cold-producing medium after compression is discharged to high-pressure gas refrigerant path 113a.Control device 140 is entering During the cooling operating of the cooling operating that row is cooled down to the circulation fluid in circulation fluid loop 200, cross valve 111 is set to first even Connect state, so that high-pressure gas refrigerant path 113a is connected with first gas refrigerant passage 113c and so that second gas is freezed Agent path 113h is connected with the first low-pressure refrigerant gas path 113b.In addition, control device 140 is being carried out to circulation fluid loop During the heating operating of the heating operating that 200 circulation fluid is heated, cross valve 111 is set to the second connection status, makes high pressure Gas refrigerant path 113a connect with second gas refrigerant passage 113h and make first gas refrigerant passage 113c with First low-pressure refrigerant gas path 113b connection.

Refrigerant-air heat exchanger 20 in cooling operating as make cold-producing medium heat release and the condenser that liquefies and play Function, in heating operating as making cold-producing medium absorb heat and the evaporimeter that gasifies and function.Cold-producing medium-circulation fluid heat exchange Device 50 in cooling operating as making cold-producing medium absorb heat the cooling device cooling down circulation fluid and function, in heating operating Shi Zuowei makes heater that circulation fluid heats by cold-producing medium heat release and function.Engine exhaust heat recover 70 is as making system Evaporimeter that cryogen absorbs heat and gasifies and function.

First expansion valve 41 and the second expansion valve 42 are configured at the downstream of bridge circuit 112 side by side.First expansion valve 41 according to carrying out the indication signal of self-control device 140, and the adjustment in cooling operating flows to cold-producing medium-follow via bridge circuit 112 The flow of the cold-producing medium of ring liquid heat exchanger 50, the adjustment in heating operating flows to refrigerant-air heat via bridge circuit 112 The flow of the cold-producing medium of exchanger 20.Second expansion valve 42, according to the indication signal carrying out self-control device 140, adjusts flow direction and starts The flow of the cold-producing medium of machine waste-heat recoverer 70.

Control device 140 has by CPU (Central Processing Unit：Central processing unit) etc. microcomputer The processing unit 141 constituting and inclusion ROM (Read Only Memory：Read-only storage) etc. nonvolatile memory, RAM (Randam Access Memory：Random access memory) etc. volatile memory storage part 142.

Control device 140 passes through to be loaded the control program in the ROM being stored in advance in storage part 142 by processing unit 141 To on the RAM of storage part 142 and execute, to carry out the action control of various inscapes.

In the cooling device 100 of described above, by suitably carrying out cooling operating or heating operating, can adjust The temperature of the circulation fluid of flowing in circulation fluid loop 200.

First, the motion of the cooling operating being carried out based on cooling device 100 with reference to Fig. 3 explanation, then, with reference to Fig. 4 The motion that the heating being carried out based on cooling device 100 is operated is described.

[cooling operating]

Fig. 3 is to represent the general block diagram carrying out the cooling device 100 of cooling operating condition cooling down operating.

In cooling device 100, when carrying out cooling operating, cross valve 111 is switched to the first connection by control device 140 State and so that high-pressure gas refrigerant path 113a is connected with first gas refrigerant passage 113c and make second gas freeze Agent path 113h is connected with the first low-pressure refrigerant gas path 113b.So, the high-pressure gaseous state discharged from compressor 10 Cold-producing medium (hereinafter referred to as high-pressure gas refrigerant) flow to refrigerant-air heat exchanger 20 via separator 81.

The temperature flowing to the high-pressure gas refrigerant of refrigerant-air heat exchanger 20 is higher than in refrigerant-air heat The air themperature of circulation in exchanger 20.Therefore, heat moves to air from high-pressure gas refrigerant.As a result, high pressure gas Cryogen loses condensation heat and liquefies, and becomes the cold-producing medium (hereinafter referred to as high pressure liquid refrigerant) of highly pressurised liquid state.? That is, in cooling operating, refrigerant-air heat exchanger 20 is cold as the cold-producing medium making high-pressure gas refrigerant heat release Condenser and function.

High pressure liquid refrigerant from refrigerant-air heat exchanger 20 via the first refrigerant passage 113d to bridge circuit 112 the first intermediate connection point P1 flowing.First intermediate connection point P1 is located at flow export side and the position of second check-valve 112b In the inflow entrance side of first check-valve 112a, therefore high pressure liquid refrigerant will not be to second check-valve 112b and the 3rd check-valves 112c flows, but via first check-valve 112a and flows out tie point P2 to highly pressurised liquid refrigeration from the first intermediate connection point P1 Agent path 113e flows.

Control device 140, when carrying out cooling operating, is opened the first expansion valve 41 and is closed the second expansion valve 42, so that High pressure liquid refrigerant flows to the first expansion valve 41 side and does not flow to the second expansion valve 42 side.Therefore, highly pressurised liquid refrigeration Agent passes through the first expansion valve 41 via the reservoir 83 on high pressure liquid refrigerant path 113e.

In the first expansion valve 41, high pressure liquid refrigerant expand and become low-pressure gas-liquid two-phase state cold-producing medium (with Under, referred to as low-pressure gas-liquid two phase refrigerant).Low-pressure gas-liquid two phase refrigerant is from the first low-pressure gas-liquid two phase refrigerant path 113f Inflow tie point P4 flowing to bridge circuit 112.Flow into tie point P4 and be located at second check-valve 112b and the 4th check-valves The inflow entrance side of 112d, but above-mentioned high pressure liquid refrigerant to the first intermediate connection point P1 and flows out tie point P2 flowing.Cause This, low-pressure gas-liquid two phase refrigerant is due to freezing with the highly pressurised liquid to the first intermediate connection point P1 and outflow tie point P2 flowing Pressure differential between agent, will not flow to second check-valve 112b and the 3rd check-valves 112c, but from inflow tie point P4 warp From the 4th check-valves 112d, the second intermediate connection point P3 and second refrigerant path 113g to cold-producing medium-circulation fluid heat exchange Device 50 flows.

The low-pressure gas-liquid two phase refrigerant flowing in refrigerant loop 110 side of cold-producing medium-circulation liquid heat exchanger 50 Temperature is less than the temperature of the circulation fluid in the flowing of circulation fluid loop 200 side of cold-producing medium-circulation liquid heat exchanger 50.Therefore, heat Amount moves to low-pressure gas-liquid two phase refrigerant from circulation fluid.As a result, low-pressure gas-liquid two phase refrigerant obtains heat of evaporation and gas Change, become the cold-producing medium (hereinafter referred to as low-pressure refrigerant gas) of low-pressure gas state.On the other hand, circulation fluid passes through refrigeration The heat-absorbing action of agent and cool down.That is, in cooling operating, cold-producing medium-circulation liquid heat exchanger 50 is as making low pressure gas Liquid two phase refrigerant heat absorption the cooling device of circulation fluid and function.

Afterwards, low-pressure refrigerant gas from cold-producing medium-circulation liquid heat exchanger 50 to second gas refrigerant passage 113h Flowing.Now, control device 140 makes second gas refrigerant passage 113h and the first low-pressure gas refrigeration by cross valve 111 Agent path 113b connects, and therefore low-pressure refrigerant gas are via hydraulic accumulator 82 quilt on the first low-pressure refrigerant gas path 113b It is drawn into compressor 10.

In cooling device 100, after, a series of action of above-mentioned cooling operating similarly, is repeated.

[heating operating]

Fig. 4 is to represent the general block diagram carrying out the cooling device 100 of heating operating condition heating operating.

In cooling device 100, when carrying out heating operating, cross valve 111 is switched to the second connection by control device 140 State and so that high-pressure gas refrigerant path 113a is connected with second gas refrigerant passage 113h and make first gas freeze Agent path 113c is connected with the first low-pressure refrigerant gas path 113b.So, the gases at high pressure refrigeration discharged from compressor 10 Agent is flowed to cold-producing medium-circulation liquid heat exchanger 50 via separator 81.

Temperature in the high-pressure gas refrigerant of refrigerant loop 110 side of cold-producing medium-circulation liquid heat exchanger 50 flowing Temperature higher than the circulation fluid in the flowing of circulation fluid loop 200 side of cold-producing medium-circulation liquid heat exchanger 50.Therefore, heat from High-pressure gas refrigerant moves to circulation fluid.As a result, high-pressure gas refrigerant loses condensation heat and liquefies, become high pressure liquid Cryogen.On the other hand, circulation fluid is heated by the exothermic effects of cold-producing medium.That is, in heating operating, system Cryogen-circulation liquid heat exchanger 50 as the heater of the circulation fluid making high-pressure gas refrigerant heat release and function.

High pressure liquid refrigerant from cold-producing medium-circulation liquid heat exchanger 50 via second refrigerant path 113g to bridging back The second intermediate connection point P3 flowing on road 112.Second intermediate connection point P3 be located at the 3rd check-valves 112c inflow entrance side and Positioned at the flow export side of the 4th check-valves 112d, therefore high pressure liquid refrigerant will not be to first check-valve 112a and the 4th non-return Valve 112d flows, but via the 3rd check-valves 112c and flows out tie point P2 to high pressure liquid system from the second intermediate connection point P3 Cryogen path 113e flows.

Control device 140, when carrying out heating operating, is opened the first expansion valve 41 and is closed the second expansion valve 42, so that High pressure liquid refrigerant flows to the first expansion valve 41 side and does not flow to the second expansion valve 42 side.Therefore, highly pressurised liquid refrigeration Agent passes through the first expansion valve 41 via the reservoir 83 on high pressure liquid refrigerant path 113e.

In the first expansion valve 41, high pressure liquid refrigerant expands and becomes low-pressure gas-liquid two phase refrigerant.Low-pressure gas-liquid Two phase refrigerant flows from the first low-pressure gas-liquid two phase refrigerant path 113f to the inflow tie point P4 of bridge circuit 112.Stream Enter the inflow entrance side that tie point P4 is located at second check-valve 112b and the 4th check-valves 112d, but above-mentioned high pressure liquid refrigerant To the second intermediate connection point P3 and outflow tie point P2 flowing.Therefore, low-pressure gas-liquid two phase refrigerant due to in the middle of second Pressure differential between tie point P3 and the high pressure liquid refrigerant flowing out tie point P2 flowing, not to the 4th check-valves 112d and the One check-valves 112a flowing, but from flow into tie point P4 via second check-valve 112b and the first refrigerant passage 113d to Refrigerant-air heat exchanger 20 flows.

The temperature flowing to the low-pressure gas-liquid two phase refrigerant of refrigerant-air heat exchanger 20 is less than in cold-producing medium-sky The temperature of the air of circulation in gas-heat exchanger 20.Therefore, heat moves to low-pressure gas-liquid two phase refrigerant from air.Its result It is that low-pressure gas-liquid two phase refrigerant obtains heat of evaporation and gasifies, and becomes low-pressure refrigerant gas.That is, in heating operating In, refrigerant-air heat exchanger 20 plays work(as the evaporimeter of the cold-producing medium making low-pressure gas-liquid two phase refrigerant absorb heat Energy.

Afterwards, low-pressure refrigerant gas flow to first gas refrigerant passage 113c from refrigerant-air heat exchanger 20 Dynamic.Now, control device 140 makes first gas refrigerant passage 113c and the first low-pressure refrigerant gas by cross valve 111 Path 113b connection, the therefore low-pressure refrigerant gas quilt via the hydraulic accumulator 82 on the first low-pressure refrigerant gas path 113b It is drawn into compressor 10.

In cooling device 100, after, a series of action of above-mentioned heating operating is similarly repeated.

[defrosting operating]

In addition, in the case of carrying out heating operating, supplying low-pressure gas-liquid quarter-phase system to refrigerant-air heat exchanger 20 Pipe arrangement in cryogen, therefore refrigerant-air heat exchanger 20 is cooled.Now, according to conditions such as extraneous gas temperature, exist The situation of frost is adhered on the pipe arrangement in refrigerant-air heat exchanger 20.In this case, cooling device 100 carries out defrosting fortune Turn.

Then, the motion of the defrosting operating being carried out based on cooling device 100 with reference to Fig. 5 explanation.

Fig. 5 is the general block diagram of the cooling device 100 representing the defrosting operating state carrying out defrosting operating.

In cooling device 100, when carrying out defrosting operating, in the same manner as cooling operating, control device 140 is by cross valve 111 switch to the first connection status so that high-pressure gas refrigerant path 113a is connected simultaneously with first gas refrigerant passage 113c And so that second gas refrigerant passage 113h is connected with the first low-pressure refrigerant gas path 113b.So, from compressor 10 row The high-pressure gas refrigerant going out flows to refrigerant-air heat exchanger 20 via separator 81.

In the same manner as cooling operating, the high-pressure gas refrigerant flowing to refrigerant-air heat exchanger 20 loses condensation Heat and liquefy, become high pressure liquid refrigerant.That is, in defrosting operating, refrigerant-air heat exchanger 20 is as making The condenser of the cold-producing medium of high-pressure gas refrigerant heat release and function.

In the same manner as cooling operating, high pressure liquid refrigerant is from refrigerant-air heat exchanger 20 via the first cold-producing medium Path 113d, the first intermediate connection point P1 of bridge circuit 112, first check-valve 112a and outflow tie point P2 are to high pressure liquid Cryogen path 113e flows.

Control device 140, when carrying out defrosting operating, is opened the second expansion valve 42 and is closed the first expansion valve 41, so that High pressure liquid refrigerant flows to the second expansion valve 42 side and does not flow to the first expansion valve 41 side.Therefore, highly pressurised liquid refrigeration Agent passes through the second expansion valve 42 via the reservoir 83 on high pressure liquid refrigerant path 113e.

In the second expansion valve 42, high pressure liquid refrigerant expands and becomes low-pressure gas-liquid two phase refrigerant.Low-pressure gas-liquid Two phase refrigerant flows to engine exhaust heat recover 70 from the second low-pressure gas-liquid two phase refrigerant path 113i.

Low in the temperature of the low-pressure gas-liquid two phase refrigerant of refrigerant loop 110 side of engine exhaust heat recover 70 flowing Temperature in the engine cooling water flowing in chilled(cooling) water return (CWR) 120 side of engine exhaust heat recover 70.Therefore, heat from send out Motivation cooling water moves to low-pressure gas-liquid two phase refrigerant.As a result, low-pressure gas-liquid two phase refrigerant obtains heat of evaporation and gas Change, become low-pressure refrigerant gas.That is, in defrosting operating, engine exhaust heat recover 70 is as making low-pressure gas-liquid Two phase refrigerant heat absorption the evaporimeter of cold-producing medium and function.

Afterwards, low-pressure refrigerant gas from engine exhaust heat recover 70 via the second low-pressure refrigerant gas path 113j, junction of two streams P5 of the first low-pressure refrigerant gas path 113b, interflow path 113b1 and hydraulic accumulator 82 are inhaled into pressure Contracting machine 10.

In cooling device 100, after, a series of action of above-mentioned defrosting operating similarly, is repeated.

In the defrosting operating of described above, supply high-pressure gas refrigerant to refrigerant-air heat exchanger 20, therefore Pipe arrangement in refrigerant-air heat exchanger 20 is heated.As a result, being attached to refrigerant-air heat in heating operating Frost on exchanger 20 is removed.In addition, in defrosting operating, low-pressure gas-liquid two phase refrigerant is not to cold-producing medium-circulation fluid heat Exchanger 50 flows, and reduces with the circulation liquid temp of cold-producing medium evaporation thus without producing.

[with regard to the control of each cooling device to cooling system]

In addition, in the cooling system 1 being connected with multiple stage cooling device 100 (1)～100 (n), carrying out will be attached to make In the case of the defrosting operating that frost on pipe arrangement in cryogen-air heat exchanger 20 removes, do not enter during defrosting operating The temperature adjustment (specifically heating operating) of row circulation fluid, if therefore specify the cooling device 100 of more than number of units (especially All cooling devices 100 (1)～100 (n)) in the same period carry out defrosting operating, then cannot be sufficiently carried out (or completely cannot Carry out) temperature adjustment of circulation fluid.

With regard to this point, in conventional cooling system, as described above, be configured to work as creating defrosting from each cooling device During the request of operating, only make the cooling device of number of units set in advance execute defrosting operating simultaneously, defrosting fortune can carried out simultaneously In the case that the available number of units turning is more than 2, with request simultaneously till can carrying out the available number of units of defrosting operating Sequencing allows defrosting operating (with reference to patent document 2), but be not determine defrosting operating standby in cooling device that The structure of this priority.

From such a viewpoint, the cooling system 1 of present embodiment possesses to each cooling device 100 (1)～100 (n) Carry out the controlling organization of action control as following.

I.e., in the present embodiment, such controlling organization is the control device of each cooling device 100 (1)～100 (n) 140 aggregate, each control device 140 (1)～140 (n) is connected in the way of being in communication with each other.Cooling system 1 is by multiple stage In cooling device 100 (1)～100 (n) any one is appointed as the cooling device 100 (i) of main frame, and (i is any in 1 to n Integer).Additionally, controlling organization is set as the control device that each cooling device 100 (1)～100 (n) is uniformly controlled, This control device can be provided separately with each cooling device 100 (1)～100 (n).

Each cooling device 100 (1)～100 (n) is held to remove the frost being attached on refrigerant-air heat exchanger 20 The defrosting of row defrosting operating controls.Cooling device 100 in heating operating for example exceedes in the time that continuously performs of heating operating It is judged as needing defrosting operating in the case of stipulated time.In order to carry out answering in the case of being judged as needing defrosting operating Right, and it is prepared with defrosting control.It is following control that defrosting controls：Heat in operating for being judged as needing defrosting operating Cooling device 100, does not in the same period exceed predetermined regulation number of units and (in the same period allows the number of units of defrosting operating I.e. simultaneously defrosting allow number of units) make it execute defrosting operating, but with defrost simultaneously allow number of units so that it is executed as limit Defrosting operating.

In the present embodiment, defrosting simultaneously allows number of units can be set to, and makes the number of units being connected from cooling device 100 be Connect number of units in deduct number of units obtained from 1 divided by allow benchmark number of units (it becomes the benchmark for allowing defrosting operating, It is 4 in this example), the number of units of 1 is added by giving up below the decimal point of the value obtaining and to the value obtaining.

That is, when being set to n (n >=2), permission benchmark number of units being set to c connection number of units, defrosting simultaneously allows number of units m energy Enough calculated by following formula (1).

M=INT [(n-1)/c]+1 formula (1)

Wherein, " INT " in formula (1) is the letter that will give up after the decimal point of the value of the formula [(n-1)/c] in bracket Number.

For example, in the case of benchmark number of units c being allowed to be set to 4, if connecting number of units n to be less than more than 24, with When defrosting allow number of units m be 1, if connect number of units n be less than more than 58, simultaneously defrosting permission number of units m be 2.

In addition, being configured to, comprise the multiple stage cooling device 100 (1)～100 (n) of the cooling device 100 (i) of main frame (handset), in the case of being judged as needing defrosting operating, needs the cooling device 100 of the defrosting operating cooling device to main frame 100 (i) (specifically to control device 140 (i)) asks defrosting operating (specifically, to send the letter of request defrosting operating Number).Additionally, in the case that the cooling device 100 of request defrosting operating is the cooling device 100 (i) of main frame itself, main frame Cooling device 100 (i) is to requesting itself defrosting operating.

In addition, the cooling device 100 (i) of main frame is configured to request defrosting operating in the cooling device 100 (i) to main frame Cooling device 100 in, until defrost simultaneously allow number of units m till and with ask defrosting operating request sequencing to allow Defrosting operating (specifically, sends the signal allowing defrosting operating).Additionally, the cooling device in the permission receiving defrosting operating In the case that 100 are the cooling device 100 (i) of main frame itself, the cooling device 100 (i) of main frame itself receives defrosting operating Allow.

For example, in the case that connection number of units n by cooling device 100 is set to 8, when in the cooling device to main frame 100 (i) request the cooling device 100 (1) of defrosting operating, in cooling device 100 (4), 100 (6)～100 (8) to cool down dress Put 100 (1), cooling device 100 (4), 100 (6), 100 (7) and 100 (8) order request defrosting operating when, main frame cold But with cooling device 100 (1) and cooling till device 100 (i) allows number of units m (in this example for 2) until defrosting simultaneously The request sequencing of device 100 (4) allows defrosting operating.

In addition, being configured in each cooling device 100 (1)～100 (n), defrosting operating standby in cooling device 100 Defrosting operating is asked to the cooling device 100 (i) of main frame with specified period (specifically, every the process time ground of regulation) (specifically, sending the signal of request defrosting operating).

Here, the cooling device 100 in standby refers to, defrosting operating is requested to the cooling device 100 (i) of main frame but main The cooling device 100 (i) of machine does not allow (forbidding operating) cooling device of defrosting operating.

And, the cooling device 100 (i) of main frame is configured to, defrosting operating standby in cooling device 100 exist many In the case of platform, with the request number of times of defrosting operating or request time (for request in the example shown in Fig. 6 to Figure 10 described later Number of times) the order from big to small defrosting operating that allows next time.Here, the request number of times of defrosting operating refers to, from needs The defrosting carrying out to Host Based cooling device 100 (i) during the cooling device 100 initial request defrosting operating of defrosting operating is transported The number of times of defrosting operating is requested till when the up-to-date permission turning judges.In addition, the request time of defrosting operating refers to, from Need defrosting operating cooling device 100 initial request defrosting operating when to removing that Host Based cooling device 100 (i) is carried out The time being spent till when the up-to-date permission of frost operating judges.

In addition, each cooling device 100 (1)～100 (n) is attached with mutually different identiflication number (in this example for 1～ N), the cooling device 100 (i) of main frame is configured to, the request number of times for defrosting operating or request time identical cooling device 100 each other, with identiflication number order from small to large or order from big to small (in the example shown in Fig. 6 to Figure 10 be from Little to big order) allow defrosting operating next time.

Fig. 6 to Fig. 8 is to represent in the cooling system 1 that connection number of units n by cooling device 100 is set in the case of 8, Carry out defrosting operating request and the main frame of from each cooling device 100 (1)～100 (8) cooling device 100 (i) to main frame The permission of the defrosting operating to each cooling device 100 (1)～100 (8) for the cooling device 100 (i) or forbid one 's of state Concept map.

Additionally, in the example of Fig. 6 to Fig. 8, in each cooling device 100 (1)～100 (8), for load capacity The running capacity of 6 cooling devices 100 be enough to, and therefore illustrates and so that 2 cooling devices 100 (3), 100 (5) is stopped and pass through 6 Platform cooling device 100 (1), 100 (2), 100 (4), 100 (6)～100 (8) carries out heating the example of operating.Specifically illustrate Following example：For carrying out heating each cooling device 100 (1), 100 (2), 100 (4), 100 (6)～100 (8) of operating, sentencing Break as needing defrosting operating and the cooling device 100 (i) of main frame being requested with the cooling device 100 (1), 100 of defrosting operating (4), in 100 (6)～100 (8), the request sequencing of request defrosting operating is in upper 2 cooling device 100 Order is set to cooling device 100 (1) and the order of cooling device 100 (4), remaining cooling device 100 (6)～100 (8) suitable With the request number of times of defrosting operating, order from big to small is set to cooling device 100 (6), cooling device 100 (8) and cooling dress to sequence Put 100 (7) order.

That is, Fig. 6 is shown below state：The cooling device 100 (i) of main frame allows the request priority in request defrosting operating suitable Early 2 cooling devices 100 (1), 100 (4) defrosting operating in sequence, and forbid more late than 2 cooling devices 100 (1), 100 (4) 3 cooling devices 100 (6)～100 (8) defrosting operating.

Fig. 7 is shown below state：Cooling device 100 (i) 2 shown in Fig. 6 cooling device 100 (1), 100 of main frame (4) defrosting operating allows request number of times sequentially 2 coolings in big standby of request number of times in defrosting operating after terminating Device 100 (6), 100 (8) defrosting operating, and 1 less than 2 cooling devices 100 (6), 100 (8) of inhibition request number of times is cold But the defrosting operating (continuation holding state) of device 100 (7).

In addition, Fig. 8 is shown below state：Cooling device 100 (i) 2 shown in Fig. 7 cooling device 100 of main frame (6), 100 (8) defrosting operating allows the defrosting operating of remaining 1 cooling device 100 (7) after terminating.

Fig. 9 is to represent the temperature adjustment ability of cooling system 1 and each cooling device 100 (1) in the example shown in Fig. 6 to Fig. 8 The sequential chart of～100 (8) operating condition.

Additionally, in fig .9, the state that (thermo-on) refers to compressor 10 operating opened by thermostat, and thermostat cuts out (thermo-off) refer to the state that compressor 10 stops.In addition, defrosting operating is opened referring to carry out the state of defrosting operating, remove Frost operating is closed and is referred to not carry out the state of defrosting operating.In example shown in Fig. 6 to Fig. 9, under thermostat opening Cooling device 100 (1), 100 (2), 100 (4), 100 (6)～100 (8) carries out heating operating when defrosting operating is closed, and is removing Frost operating carries out defrosting operating when opening.In addition, the cooling device 100 (3), 100 (5) in being originally at stopping is in thermostat Stop during closing, carry out heating operating when thermostat is opened.

(control action to each cooling device for the cooling device of main frame)

Next, to illustrate the cooling device 100 (i) of main frame to each cooling dress referring to the example shown in Fig. 6 to Fig. 9 Put the control action of 100 (1)～100 (n).

Figure 10 is to represent Host Based cooling device (i) to the defrosting control of each cooling device 100 (1)～100 (n) The flow chart of the flow process of of the control action carrying out.

In cooling system 1, when in 8 cooling devices 100 (1)～100 (8), 2 cooling devices 100 (3), 100 (5) stop Only and 6 cooling devices 100 (1), 100 (2), 100 (4), 100 (6)～100 (8) carry out heating during operating (with reference to the α in Fig. 9 1), the cooling device 100 (1), 100 (2), 100 (4), 100 (6)～100 (8) in heating operating judges whether to need defrosting fortune Turn (step S1).According to this judged result, 6 cooling devices 100 (1), 100 (2), 100 (4), 100 in heating operating (6) 5 cooling devices 100 (1), 100 (4), 100 (6)～100 (8) in～100 (8) need to carry out the situation of defrosting operating Under, need the cooling device 100 (1), 100 (4), 100 (6)～100 (8) of defrosting operating will defrost request flag FLa (1), FLa (4), FLa (6)～FLa (8) is set to ON (with reference to Fig. 6), the cooling device 100 (i) request defrosting operating (step S2) to main frame. Here, defrosting request flag FLa (1)～FLa (8) and defrosting described later allow mark FLb (1)～FLb (8) in an initial condition For OFF.

Then, the cooling device 100 (i) of main frame allows for defrosting corresponding with each cooling device 100 (1)～100 (8) Mark FLb (1)～FLb (8), the cooling device 100 asking defrosting operating in the cooling device 100 (i) to main frame is (in this example For cooling device 100 (1), 100 (4), 100 (6)～100 (8)) in ask defrosting operating request sequencing will remove simultaneously The cooling device 100 (in this example for cooling device 100 (1), 100 (4)) that frost permission number of units m (in this example for 2) is measured Defrosting allows mark FLb (1), FLb (4) to be set to ON (with reference to Fig. 6), to ask the request sequencing of defrosting operating to removing simultaneously Frost allows the cooling device 100 (1), 100 (4) that number of units (in this example for 2) is measured to allow defrosting operating (step S3).

Thus, 2 cooling devices 100 (1), 100 (4) being allowed to defrosting operating are changed into defrosting operating from heating operating (step S4), the cooling device 100 in heating operating reduce 2 from 6 and become 4 cooling devices 100 (2), 100 (6)～ 100 (8), therefore idle capacity ability reduces (α 2 with reference in Fig. 9).Therefore, the cooling device 100 (i) of main frame is by thermostat 2 cooling devices 100 (3), 100 (5) in the stopping closed are set to thermostat and open and make it carry out heating operating, make heating Cooling device 100 in operating increase by 2 from 4 and become 6 cooling devices 100 (2), 100 (3), 100 (5), 100 (6)～ 100 (8) (α 3 with reference in Fig. 9).

Then, (step in the case that the cooling device 100 (1), 100 (4) in defrosting operating is in defrosting operating S5：No), defrosting operating standby in cooling device 100 (6)～100 (8) with specified period the cooling device 100 to main frame (i) request defrosting operating (step S6).On the other hand, in the cooling device 100 (1), 100 (4) in defrosting operating, when white quilt Remove and be no longer necessary to (step S5 during defrosting operating：It is), terminate defrosting operating (step S7), will defrost request flag FLa (1), FLa (4) is set to OFF, and the cooling device 100 (i) of main frame allows mark FLb (1), FLb (4) to be set to OFF (reference by defrosting Fig. 7).

Thus, will defrost request flag FLa (1), FLa (4) is set to 2 cooling devices 100 (1), 100 (4) of OFF from removing Frost operating is back to heating operating, and the cooling device 100 in heating operating increases by 2 from 6 and becomes 8 cooling devices 100 (1)～100 (8), therefore idle capacity ability increases (α 4 with reference in Fig. 9).Therefore, the cooling device 100 (i) of main frame incite somebody to action this Come to be in stopping but be currently at thermostat unlatching heating operating in 2 cooling devices 100 (3), 100 (5) be set to save Warm device cuts out and so that it is stopped, and the cooling device 100 in making heating operate reduces 2 from 8 and becomes 6 cooling devices 100 (1), 100 (2), 100 (4), 100 (6)～100 (8) (α 5 with reference in Fig. 9).

Then, through step S8 (step S8：It is) and step S9 (step S9：Be) and be transferred to step S10, main frame cold But device 100 (i) will ask the cooling device 100 of defrosting operating (in this example for cooling to the cooling device 100 (i) of main frame Device 100 (6)～100 (8)) with the request number of times of defrosting operating order (descending) from big to small and identical for request number of times Cooling device 100 with identiflication number, order (ascending order) from small to large is ranked up (step S10), by cooling device each other 100 (6)～100 (8) order is set to the order of cooling device 100 (6), cooling device 100 (8) and cooling device 100 (7). Additionally, in this example, because the request number of times of cooling device 100 (8) is bigger than the request number of times of cooling device 100 (7), therefore cold But the order of device 100 (6)～100 (8) is the suitable of cooling device 100 (6), cooling device 100 (8) and cooling device 100 (7) Sequence, but for example in the case that cooling device 100 (8) and cooling device 100 (7) are same request number of times, due to cooling dress The identiflication number of cooling device 100 (7) is " 7 " for " 8 " to put 100 (8) identiflication number, therefore cooling device 100 (6)～ 100 (8) order is the order of cooling device 100 (6), cooling device 100 (7) and cooling device 100 (8).

Afterwards, the cooling device 100 (i) of main frame allows for defrosting corresponding with each cooling device 100 (1)～100 (8) Mark FLb (1)～FLb (8), the cooling device 100 asking defrosting operating in the cooling device 100 (i) to main frame is (in this example For cooling device 100 (6)～100 (8)) in, by the request number of times in defrosting operating, sequentially request number of times is big and is asking Number of times identical cooling device while identiflication number is little one another defrosting allow number of units m (in this example for the 2) cooling measured The defrosting of device 100 (in this example for cooling device 100 (6), 100 (8)) allows mark FLb (6), FLb (8) to be set to ON (ginseng According to Fig. 7), to the request number of times in defrosting operating sequentially request number of times is big and request number of times identical cooling device one another While identiflication number is little, defrosting allows the cooling device 100 (6), 100 (8) that number of units (in this example for 2) is measured to allow defrosting Operating (step S11).

Thus, 2 cooling devices 100 (6), 100 (8) being allowed to defrosting operating are changed into defrosting operating from heating operating (step S4), the cooling device 100 in heating operating reduce 2 from 6 and become 4 cooling devices 100 (1), 100 (2), 100 (4), 100 (7), therefore idle capacity ability reduces (α 6 with reference in Fig. 9).Therefore, the cooling device 100 (i) of main frame will 2 cooling devices 100 (3), 100 (5) in the stopping that thermostat cuts out are set to thermostat and open and make it carry out heating operating, Cooling device 100 in making heating operate increases by 2 from 4 and becomes 6 cooling devices 100 (1)～100 (5), 100 (7) (α 7 with reference in Fig. 9).

Then, (step in the case that the cooling device 100 (6), 100 (8) in defrosting operating is in defrosting operating S5：No), defrosting operating standby in cooling device 100 (7) with specified period, the request of the cooling device 100 (i) of main frame is removed Frost operating (step S6).On the other hand, in the cooling device 100 (6), 100 (8) in defrosting operating, when frost be removed and not Need (step S5 during defrosting operating again：It is), terminate defrosting operating (step S7), request flag FLa that will defrost (6), FLa (8) It is set to OFF, the cooling device 100 (i) of main frame allows mark FLb (6), FLb (8) to be set to OFF (with reference to Fig. 8) by defrosting.

Thus, will defrost request flag FLa (6), FLa (8) is set to 2 cooling devices 100 (6), 100 (8) of OFF from removing Frost operating is back to heating operating, and the cooling device 100 in heating operating increases by 2 from 6 and is changed into 8 cooling devices 100 (1)～100 (8), therefore idle capacity ability increases (α 8 with reference in Fig. 9).Therefore, the cooling device 100 (i) of main frame incite somebody to action this Come to be in stopping but be currently at thermostat unlatching heating operating in 2 cooling devices 100 (3), 100 (5) be set to save Warm device cuts out and so that it is stopped, and the cooling device 100 in making heating operate reduces 2 from 8 and becomes 6 cooling devices 100 (1), 100 (2), 100 (4), 100 (6)～100 (8) (α 9 with reference in Fig. 9).

Then, through step S8 (step S8：It is) and step S9 (step S9：No) and transfer to step S12, main frame cold But device 100 (i) allows mark FLb (1)～FLb (8) for defrosting corresponding with each cooling device 100 (1)～100 (8), will Remaining 1 cooling device 100 of defrosting operating is asked (in this example for cooling device to the cooling device 100 (i) of main frame 100 (7)) defrosting allows mark FLb (7) to be set to ON (with reference to Fig. 8), allows defrosting to remaining 1 cooling device 100 (7) Operating (step S12).

Thus, 1 cooling device 100 (7) being allowed to defrosting operating is changed into defrosting operating (step from heating operating S4), the cooling device 100 in heating operating reduce 1 from 6 and become 5 cooling devices 100 (1), 100 (2), 100 (4), 100 (6), 100 (8), therefore idle capacity ability reduces (α 10 with reference in Fig. 9).Therefore, the cooling device 100 (i) of main frame 1 cooling device 100 (in this example for cooling device 100 (3)) in the stopping that thermostat cuts out is set to thermostat and opens And making it carry out heating operating, the cooling device 100 in making heating operate increases by 1 from 5 and becomes 6 cooling devices 100 (1)～100 (4), 100 (6), 100 (8) (α 11 with reference in Fig. 9).

Then, in the cooling device 100 (7) in defrosting operating, (the step when frost is removed and is no longer necessary to defrosting operating Rapid S5：It is), terminate defrosting operating (step S7), request flag FLa that will defrost (7) is set to OFF, the cooling device 100 of main frame I () allows mark FLb (7) to be set to OFF by defrosting.

Thus, request flag FLa (7) that will defrost be set to 1 cooling device 100 (7) of OFF be back to from defrosting operating plus Heat run, the cooling device 100 in heating operating increases by 1 from 6 and becomes 7 cooling devices 100 (1)～100 (4), 100 (6)～100 (8), therefore idle capacity ability increases (α 12 with reference in Fig. 9).Therefore, the cooling device 100 (i) of main frame will Originally be in stopping but be currently at thermostat unlatching heating operating in 1 cooling device 100 (3) be set to thermostat close Close and so that it is stopped, the cooling device 100 in making heating operate reduces 1 from 7 and becomes 6 cooling devices 100 (1), 100 (2), 100 (4), 100 (6)～100 (8) (α 13 with reference in Fig. 9).

And, when do not have defrosting operating standby in cooling device 100 when (step S8：No), terminate defrosting and control.

Additionally, in the example shown in Fig. 6 to Figure 10, the number of units of cooling device 100 being set to 8, but is not limited to this, The number of units of cooling device 100 can also be 2～7 or more than 9.

In addition, in the example shown in Fig. 6 to Figure 10, defrosting operating standby in cooling device there are the feelings of multiple stage Under condition, above-mentioned defrosting operating next time is allowed with request number of times order from big to small but it is also possible to request time from big To little order permission above-mentioned defrosting operating next time.

In addition, in the example shown in Fig. 6 to Figure 10, the cooling device 100 (i) of main frame is secondary for the request of defrosting operating Number identical cooling devices 100 each other, defrosting operating next time is allowed with identiflication number order from small to large but it is also possible to With identiflication number order permission from big to small defrosting operating next time.

(with regard to present embodiment)

As described above, the cooling system 1 according to present embodiment, controlling organization is (cold for main frame in this example But device 100 (i)) for the cooling device 100 requesting defrosting operating, until predetermined regulation number of units (defrosts simultaneously Till allowing number of units m), defrosting operating is first allowed with the order first asked, defrosting operating standby in cooling device 100 with Specified period asks defrosting operating, the cooling device of main frame to controlling organization (in this example for the cooling device 100 (i) of main frame) 100 (i) defrosting operating standby in cooling device 100 there is multiple stage in the case of, with the request number of times of defrosting operating or Request time order from big to small allows defrosting operating next time, accordingly, for defrosting operating standby in cooling dress Put 100 each other, defrosting operating next time can be allowed with necessity order from high to low.Therefore, it is possible to until regulation Till number of units with ask sequencing allow defrosting operating in the case of determine defrosting operating standby in cooling device 100 Priority each other.

In addition, in the present embodiment, controlling organization (in this example for the cooling device 100 (i) of main frame) is for defrosting The request number of times of operating or request time identical cooling device 100 each other, with identiflication number order from small to large or from big The defrosting operating allowing next time to little order, the request number of times accordingly, for defrosting operating or request time identical are cold But device 100 each other, can defrosting operating standby in cooling device 100 one another reliably determine priority.

The present invention is not limited to embodiments described above, can be implemented in other various modes.Therefore, above-mentioned reality Mode of applying all only simply illustrates in all respects, explains to the property of should not limit.The scope of the present invention passes through power Sharp claim illustrates, is not limited by specification text.In addition, belonging to deformation and the change of the equivalency range of claims Also all within the scope of the present invention.

This application claims giving the priority of the Patent 2014-129487 that on June 24th, 2014 files an application in Japan. By being referred to this, and its all the elements group is entered the application.

Industrial applicibility

The present invention relates to being connected with the cooling system of the cooling device of multiple stage heat-pump-type, especially can be applied to use as follows On the way：Until regulation number of units till and with ask sequencing allow defrosting operating in the case of determine defrosting operating standby in Cooling device priority each other.

Description of reference numerals

1：Cooling system

10：Compressor

11：Clutch

20：Refrigerant-air heat exchanger

30：Refrigerant-air heat exchanger fan

40：Expansion valve

41：First expansion valve

42：Second expansion valve

50：Cold-producing medium-circulation liquid heat exchanger

60：Engine

70：Engine exhaust heat recover

81：Separator

81a：Valve

82：Hydraulic accumulator

83：Reservoir

100：Cooling device

110：Refrigerant loop

111：Cross valve

112：Bridge circuit

1121：First check-valve arranges

1122：Second check-valve arranges

112a：First check-valve

112b：Second check-valve

112c：3rd check-valves

112d：4th check-valves

113a：High-pressure gas refrigerant path

113b：First low-pressure refrigerant gas path

113b1：Interflow path

113c：First gas refrigerant passage

113d：First refrigerant passage

113e：High pressure liquid refrigerant path

113f：First low-pressure gas-liquid two phase refrigerant path

113g：Second refrigerant path

113h：Second gas refrigerant passage

113i：Second low-pressure gas-liquid two phase refrigerant path

113j：Second low-pressure refrigerant gas path

120：Chilled(cooling) water return (CWR)

121：First segment temperature type switching valve

122：Second section temperature type switching valve

123：Radiator

124a：Outflow pathway

124b：Flow into path

124c：First path

124d：Alternate path

124e：Third path

124f：Fourth passage

124g：Fifth passage

130：Circulating pump

140：Control device

141：Processing unit

142：Storage part

151：First pressure sensor

152：Second pressure sensor

161：First temperature sensor

162：Second temperature sensor

170：Speed probe

200：Circulation fluid loop

210：Flow into main

211：Flow into arm

220：Flow out main

221：Flow out arm

231：Flow into circulation fluid temperature sensor

232：Flow out circulation fluid temperature sensor

300：Circulating pump

FLa：Defrosting request flag

FLb：Defrosting allows mark

P1：First intermediate connection point

P2：Flow out tie point

P3：Second intermediate connection point

P4：Flow into tie point

P5：Junction of two streams

P6：Junction of two streams

P7：Junction of two streams

c：Allow benchmark number of units

m：Defrosting allows number of units simultaneously

n：Connect number of units

Claims (3)

1. a kind of cooling system, is connected with the cooling device of multiple stage heat-pump-type, this cooling device by the condensation heat of cold-producing medium or The temperature of the circulation fluid to the temperature adjustment as thermal medium for the heat of evaporation is adjusted, and described cooling system is characterised by,

Any 1 cooling device in described multiple stage cooling device is designated as the cooling device of main frame,

The cooling device needing defrosting operating in described multiple stage cooling device removes described in the cooling device of described main frame is asked Frost operating,

The cooling device of described main frame in the cooling device requesting described defrosting operating, first ask in order in advance The cooling device of the regulation number of units determining allows described defrosting operating,

Described defrosting operating standby in cooling device described defrosting is asked to the cooling device of described main frame with specified period Operating,

The cooling device of described main frame described defrosting operating standby in cooling device there is multiple stage in the case of, with described The request number of times of defrosting operating or request time order from big to small allows described defrosting operating next time.

2. cooling system as claimed in claim 1 it is characterised in that

The cooling device of described main frame for the request number of times of described defrosting operating or request time identical cooling device each other, With identiflication number order or order permission from big to small from small to large described defrosting operating next time.

3. a kind of cooling system, is connected with the cooling device of multiple stage heat-pump-type, this cooling device by the condensation heat of cold-producing medium or The temperature of the circulation fluid to the temperature adjustment as thermal medium for the heat of evaporation is adjusted, and described cooling system is characterised by,

Possess the controlling organization that described multiple stage cooling device is carried out with action control,

The cooling device needing defrosting operating in described multiple stage cooling device asks described defrosting operating to described controlling organization,

Described controlling organization in the cooling device requesting described defrosting operating, first ask in order predetermined The cooling device of regulation number of units allows described defrosting operating,

Described defrosting operating standby in cooling device with specified period to described controlling organization ask described defrosting operating,

Described controlling organization described defrosting operating standby in cooling device there is multiple stage in the case of, with described defrosting fortune The request number of times or request time turning order from big to small allows described defrosting operating next time.