CN1304802C - Air refrigerating plant and control method for air conditionin gplant - Google Patents
Air refrigerating plant and control method for air conditionin gplant Download PDFInfo
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- CN1304802C CN1304802C CNB2004100896383A CN200410089638A CN1304802C CN 1304802 C CN1304802 C CN 1304802C CN B2004100896383 A CNB2004100896383 A CN B2004100896383A CN 200410089638 A CN200410089638 A CN 200410089638A CN 1304802 C CN1304802 C CN 1304802C
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/22—Refrigeration systems for supermarkets
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Abstract
The invention provided a method for controlling the air-conditioning refrigerator. When this air-conditioning refrigerator 1 causes failure of a refrigerating system (a compressor 37) or a freezing system (a compressor 54) when cooling or heating, refrigerant coming out of evaporators 43, 49 is made to flow into a cascade heat exchanger 21 without passing through the compressor 37 or the compressor 54 gone to failure to cool it excessively. Control is changed to change outlet temperature TC2 on a case side passage 21B of the cascade heat exchanger 21 to an outlet temperature in failure. Refrigerant (refrigerant for cooling) on a cooling device (a cooling system part) 8 side is cooled to a temperature which gives priority to freezing and refrigeration in a freezing case 4 and a refrigerating case 3 by refrigerant (refrigerant for air-conditioning) on an air conditioner 6 side. Furthermore, during the operation, an operation condition by a remote operation device 29 on the air conditioner 6 side and operation for changing set temperatures are ignored to realize a forced operation condition.
Description
Technical field
The present invention relates to be used for cool off the air-conditioner refrigerator that cools off in the storehouse of storage facilities and the control method of air-conditioner refrigerator in waiting in that for example shop is auxilliary.
Background technology
(indoor) utilizes air conditioner to freeze and cooling/heating air conditioner in the shops such as past convenience store.And the refrigeration of gondola sales commodity or the gondola (cooling storage facilities) of freezing gondola and band door are set in the shop.These equipment carry out cooling (for example patent document 1) in the storehouse by refrigerator.This in addition air conditioner has the operating means (common name remote controller) of operating air conditioner machine, and the operation that can follow this device moves beginning/end of run etc.
Patent document 1: the spy opens the 2002-174470 communique
Summary of the invention
Yet in case the refrigerator of cooling storage facilities cooling is broken down, will rot because of the commodity in the cooling storage facilities makes the shop suffer serious loss.
The present invention is in view of the above-mentioned problems and proposes, the control method of air-conditioner refrigerator that the trouble shooting of implementing refrigeration or freezing usefulness refrigerator is provided and air-conditioner refrigerator as purpose.
In order to solve above-mentioned problem, this air-conditioner refrigerator of the present invention comprises: have compressor, heat source side heat exchanger and utilize the side heat exchanger and utilize the side heat exchanger to carry out the air-conditioning system portion of room conditioning by this, be used for providing the operating means of various indications to above-mentioned air-conditioning system portion, has the cooling compressor, condenser and evaporimeter also cool off the refrigeration system portion of cooling off in the storehouse of storage facilities by this evaporimeter, with the on high-tension side cooling of the idle call cold-producing medium of the low-pressure side of supplying with above-mentioned air-conditioning system portion and above-mentioned refrigeration system portion series heat exchanger with cold-producing medium, and make the each part mentioned above thermally coupled, it is characterized in that: comprising: when above-mentioned cooling is broken down with compressor, form the cooling make to come out from above-mentioned evaporimeter does not just import to the inlet of above-mentioned heat exchangers in series with compressor via above-mentioned cooling with cold-producing medium the formation means (means) of bypass path of bypass path; With when above-mentioned cooling is broken down with compressor, in above-mentioned heat exchangers in series, make in above-mentioned air-conditioning system portion with cold-producing medium and carry out predefined operation and make becoming the forced service control device (means) of controlling running status by force at least by the indication of ignoring from the aforesaid operations device at this run duration in order to cool off above-mentioned cooling by above-mentioned air-conditioning refrigerant.According to this formation, because when cooling is broken down with compressor, form the cooling that does not allow come out from evaporimeter imports the inlet of series heat exchanger with compressor via cooling with cold-producing medium bypass path, and at least in series heat exchanger for by air-conditioning refrigerant to the cooling cool off with cold-producing medium, carry out predefined operation and make in air-conditioning system portion, and become the forced service state by the indication of ignoring from operating means, so can avoid taking place because of the user does not note the situation that stops above-mentioned operation at this run duration.
Preferably, above-mentioned forced service control device is supplied with the quantity delivered of above-mentioned air-conditioning refrigerant also changing to predetermined target air-conditioner temperature by the definite room conditioning target temperature of above-mentioned air-conditioning system portion, as predefined operation for the above-mentioned cooling in the above-mentioned series heat exchanger is controlled as the predeterminated target outlet temperature to above-mentioned series heat exchanger with the outlet temperature of cold-producing medium.Preferably, the aforesaid operations device has the communicating department of circulating a notice of its intention when carrying out predefined operation in above-mentioned air-conditioning system portion to the user making.And, preferably, also can stop to indicate other operating means that offers this air-conditioner refrigerator to the major general even above-mentioned air-conditioner refrigerator has when making the operation that above-mentioned air-conditioning system portion is scheduled to.
The control method of air-conditioner refrigerator of the present invention, this air-conditioner refrigerator equipment comprises: have compressor, the heat source side heat exchanger and utilize the side heat exchanger and by this utilize the side heat exchanger carry out empty in the air-conditioning system portion of air-conditioning, be used for providing the operating means of various indications to above-mentioned air-conditioning system portion, has the cooling compressor, condenser and evaporimeter also cool off the refrigeration system portion of cooling off in the storehouse of storage facilities by this evaporimeter, with the on high-tension side cooling of the idle call cold-producing medium of the low-pressure side of supplying with above-mentioned air-conditioning system portion and above-mentioned refrigeration system portion series heat exchanger with cold-producing medium, and make the each part mentioned above thermally coupled, it is characterized in that: when above-mentioned cooling is broken down with compressor, formation make the cooling of coming out from above-mentioned evaporimeter with cold-producing medium not via above-mentioned cooling import to compressor above-mentioned series heat exchanger inlet bypass path and above-mentioned series heat exchanger, make in above-mentioned air-conditioning system portion with cold-producing medium and carry out predefined operation at least in order to cool off above-mentioned cooling by above-mentioned air-conditioning refrigerant, and make between this Yunqi and become the forced service state by the indication of ignoring from the aforesaid operations device.
Because when air-conditioner refrigerator of the present invention breaks down with compressor in above-mentioned cooling, formation make the cooling of coming out from above-mentioned evaporimeter with cold-producing medium not via above-mentioned cooling import to compressor above-mentioned series heat exchanger inlet bypass path and at least above-mentioned series heat exchanger for above-mentioned cooling being cooled off with cold-producing medium by above-mentioned air-conditioning refrigerant, carry out predefined operation and make, and make between this Yunqi and become the forced service state by the indication of ignoring from the aforesaid operations device in above-mentioned air-conditioning system portion.So the commodity that can postpone to cool off in the storage facilities rot, and can avoid really not taking place because of the user does not note the situation that its operation is ended.
Description of drawings
Fig. 1 is the explanation figure that comprises the system of the refrigerant loop of air-conditioner refrigerator and the constitute refrigerating operaton of the air conditioner (time).
Fig. 2 is the figure of the operation of the compressor of air conditioner cooling device when refrigerating operaton of explanation air-conditioner refrigerator when breaking down.
Fig. 3 is the key diagram of heating operation of the air conditioner of explanation air-conditioner refrigerator.
Fig. 4 is the programme diagram of compressor when breaking down of explanation cooling device.
Fig. 5 is the figure of the operation of the compressor of air conditioner cooling device when heating operation of explanation cooling device when breaking down.
The specific embodiment
Describe embodiments of the present invention with reference to the accompanying drawings in detail.Fig. 1 is the figure that the system of the refrigerant loop of the expression air-conditioner refrigerator 1 that comprises embodiment of the present invention constitutes.This refrigeration system 1 is to realize the air-conditioning in for example indoor 2 (in the shops) of convenience store and as the system of cooling off in the storehouses such as the cooler bin 3 of establishing cooling storage facilities thereon and household freezer 4.
In addition, refrigerating box 3 and household freezer 4 are except being the gondola of front and top opening, also be to open and close the gondola of freely closing opening by transparent glass door, be cooled to refrigerated storage temperature (+3 ℃～+ 10 ℃) in the storehouse of refrigerating box 3, and chilled foods such as display beverage and sandwich etc., and be cooled to cryogenic temperature (20 ℃～-10 ℃) and the array frozen food and the cold spot heart etc. in the storehouse of household freezer 4.
This air-conditioner refrigerator 1 comprise the air conditioner (air-conditioning system portion) 6 that carries out indoor 2 air-conditionings and carry out indoor 2 refrigerating box 3 and the storehouse of household freezer 4 (cooling storage facilities) in the cooling device (cooling system portion) 8 of cooling, the air-conditioning refrigerant loop of air conditioner 6 constitutes by pipe arrangement by striding across to be arranged on a plurality of indoor sets 11 on indoor 2 the ceiling etc. and to be arranged between the outdoor unit 12 outside the shop.
This idle call refrigerant loop 7 is by two compressors (rotary compressor) 13A in the outer dress shell that is arranged on outdoor unit 12 (by the FREQUENCY CONTROL operation of frequency converter), 13B (constant-speed operation), check- valves 5A, 5B, 5C and 5D, oil eliminator 10, cross valve 14, heat source side heat exchanger 16, expansion valve (dropping equipment that constitutes by electric expansion valve) 17,18 and 19, series heat exchanger 21, reservoir vessel 23, constitute with side heat exchanger 27 systems that utilize that indoor set 11 sides are set.
The 26th, be used for outdoor controller (be the controller that constitutes the operation control device, constitute), and be arranged in the outdoor unit 12 by general microcomputer according to the machine of outdoor unit 12 sides of control air conditioners 6 such as temperature and pressure.And 24 be to be used for ventilate air blast to heat source side heat exchanger 16 of extraneous air.The 28th, be used for indoor controller (be the controller that constitutes the operation control device, constitute), and be arranged in the indoor set 11 by general microcomputer according to the machine of indoor set 11 sides of temperature and pressure control air conditioner 6.
At this, in indoor 2, be provided for the long-range operation device (remote manipulator common name (remote controller)) 29 of operating air conditioner machine 6.This long-range operation device 29 comprises display part (reporting portion) and each operator of being made up of the liquid crystal panel that shows various information, operation input by operator is from the indication of user's indoor 2 design temperature etc., by with indoor set controller 28 between communicate by letter, the various indications of user's input are notified to indoor set controller 28, on display part, show the action message (motion state (refrigerating operaton or heating operation etc.)) of air conditioner 6 etc. simultaneously.In addition, the 15th, be used for indoor 2 air (air in the shop) to the air blast that utilizes side heat exchanger 27 to ventilate, and be arranged on indoor set 11 in utilize on the corresponding position of side heat exchanger 27.
Utilizing the outlet of side heat exchanger 27 to stride across outdoor unit 12 backs links to each other with another inlet of cross valve 14, another outlet of cross valve 14 links to each other with reservoir vessel 23 by check-valves 5D, and the outlet of this reservoir vessel 23 is connected to the suction side of compressor 13A, 13B.In addition the downbeam of check-valves 5D is set at reservoir vessel 23 sides.
In addition, the pipe arrangement between the expansion valve 17 and 18 links to each other with the inlet of expansion valve 19, and the outlet of expansion valve 19 links to each other with the inlet of the air-conditioning side path 21A of series heat exchanger 21.The outlet of the air-conditioning side path 21A of this series heat exchanger 21 links to each other with the suction side of compressor 13A, 13B by reservoir vessel 23.
In addition, the cooling storage facilities of cooling device 8 stride across outdoor unit 12 with refrigerant loop 9 and be arranged on the refrigerating box 3 in indoor 2 (in the shops) and household freezer 4 between and constitute by pipe arrangement.This cooling storage facilities is with the compressor (screw compressor) 37 of refrigerant loop 9 by the refrigeration usefulness in the outer dress shell that is arranged on outdoor unit 12, condenser (heat exchanger) 38, cross valve 39,41,42 (constituting the stream control device) by cross valve 39 and 41, oil eliminator 31, reservoir vessel (receiver tank) 36, refrigeration in the storehouse of cooling refrigeration case 3 evaporimeter 43, expansion valve (electric expansion valve) 44, magnetic valve 46,47, the freezing evaporimeter 49 of using in the storehouse of cooling household freezer 4, expansion valve (electric expansion valve) 51, magnetic valve 52, the compressor of freezing amplification usefulness (screw compressor) 54, formations such as check-valves 30 and oil eliminator 45.
The 32nd, the refrigerator controller (be the controller that constitutes cooling system portion, be made of general microcomputer) according to the machine of outdoor unit 12 sides of temperature and pressure control cooling device 8 is arranged on the outdoor unit 12.The fault detect portion that this refrigerator controller 32 also works to detect faults such as compressor 37 after having detected fault, notifies master controller 56 described later with its order.
The 35th, be used for outdoor air is blown into the air blast of condenser 38, be arranged on the correspondence position with the condenser 38 of outdoor unit 12.In addition, the 50th, the refrigerating box controller (be the controller that constitutes cooling storage facilities system control device, be made of general microcomputer) according to the machine of control refrigerating box 3 sides such as temperature and pressure is located on the refrigerating box 3.Other 55 is the household freezer controllers (be the controller that constitutes cooling storage facilities system control device, be made of general microcomputer) according to the machine of temperature and pressure control household freezer 4 sides, is arranged on the household freezer 4.
The 20th, be used for cold air in refrigerating box 3 storehouses is blown into the air blast that refrigerates with evaporimeter 43, be arranged on respectively and use on the position corresponding on the evaporimeter 43 with each refrigerating box 3 interior respectively refrigerating.The 25th, cold air in the storehouse in the household freezer is blown into freezing with the air blast on the evaporimeter 49, be arranged on household freezer 4 in freezing with on the corresponding position of evaporimeter 49.
The discharge oral-lateral of compressor 37 is connected by oil eliminator 31 on the inlet of cross valve 39, and an outlet of this cross valve 39 is connected on the inlet of condenser 38.This condenser 38 is by comprising that entrance side 38A that flow path resistance that a plurality of pipe arrangements in parallel are formed is smaller and the outlet side 38B that they are collected on several pipe arrangements in parallel or the single pipe arrangement constitute.And the outlet of the outlet side 38B of condenser 38 is connected on the inlet of reservoir vessel 36, and the outlet of this reservoir vessel 36 is connected on the inlet of cross valve 41.It is the cold-producing medium downstream side that reservoir vessel 36 is connected condenser 38.
An outlet of cross valve 41 is connected on the inlet of case side path 21B of series heat exchanger 21.Series heat exchanger 21 makes respectively by the air-conditioning side path 21A that constitutes in inside and the mutual heat exchange of cold-producing medium of case side path 21B in addition, makes 9 the mutual thermally coupled in high-pressure side with the cold-producing medium road of the low-pressure side of idle call refrigerant loop 7 and cooling storage facilities whereby.
The outlet of the case side path 21B of series heat exchanger 21 is connected on another inlet of cross valve 39, and another outlet of this cross valve 39 is connected on another inlet of cross valve 41.And another outlet of this cross valve 41 from the outdoor unit 12 () branch afterwards of coming out in the inlet chamber in the shop in, the pipe arrangement of a branch is connected refrigeration with on the inlet of evaporimeter 43 by magnetic valve 46 and expansion valve 44, and the pipe arrangement of another branch is connected freezing with on the inlet of evaporimeter 49 by magnetic valve 52 and expansion valve 51.
The freezing suction side (establishing compressor 54 sides is the downbeam of check-valves 30) that is connected compressor 54 with the outlet of evaporimeter 49 by check-valves 30.The little compressor of output that this compressor 54 is ratio piston compressors 37, it is discharged side and is connected on the inlet of cross valve 42, after an outlet of cross valve 42 was connected on the refrigeration usefulness outlet side of evaporimeter 43, this compressor 54 was connected the suction side of compressor 37 by oil eliminator 45.Be that compressor 54 and compressor 37 are connected in series on the refrigerant loop.
The inlet of the other direction of cross valve 42 confluxes on the pipeline of the entrance side of compressor 54, and another outlet of cross valve 42 is confluxed on the pipeline of the entrance side of the case side path 21B of series heat exchanger 21 by check-valves 61.If the downbeam of check-valves 61 is towards series heat exchanger 21 sides.The pipeline that following handle leads to the case side path 21B entrance side of this cross valve 42 and series heat exchanger 21 is expressed as 70.In refrigerant loop 7,9, enclose for example cold-producing medium of scheduled volume such as R-410A, R-404A.
At this, in the air-conditioner refrigerator 1 of present embodiment, can form the structure of the bypass path on the cold-producing medium that comes out of evaporimeter 43,49 (cooling cold-producing medium) that makes from refrigeration usefulness do not import to series heat exchanger 21 via the compressor (compressor 37 or compressor 54) of cooling device the inlet.That is, can pass through to switch cross valve 42, as shown in Figure 2 the structure of the bypass path 80 of the entrance side of the bypass path 70 of the outlet side of the outlet side of formation connection evaporimeter 43 and steam generator 49, the discharge side that is communicated with compressor 54 and series heat exchanger 21.
Because form bypass path 70,80 like this, so can be when for example compressor 37 breaks down, the cold-producing medium (cooling cold-producing medium) that comes out from evaporimeter 43,49 is confluxed after bypass path 70, utilize bypass path 80 to import to the inlet (seeing the arrow α among Fig. 2) of series heat exchanger 21 without compressor 37 via compressor 54 grades.In addition when for example compressor 54 breaks down, not via compressor 54, and import to the inlet (seeing the arrow β among Fig. 2) of series heat exchanger 21 via compressor 37 grades after can making the cold-producing medium (cooling cold-producing medium) that comes out from evaporimeter 43,49 conflux bypass path 70.In addition, check-valves 61 is set on bypass path 80, can prevents of the refluence of above-mentioned cold-producing medium whereby to the bypass pathway 80 of the cold-producing medium of supplying with series heat exchanger 21 via cross valve 41.
The action of this air-conditioner refrigerator 1 of explanation under above structure below.If above-mentioned compressor 37 and 13A are by Frequency Converter Control, compressor 13B and compressor 54 move with constant speed.Master controller (working) 56 controls that whole actions of refrigerating plant 1 are made of general microcomputer in the air-conditioning as the forced service control device.At this, on master controller 56, be provided for supplying with the remote handling device (common name remote controller) 57 of master controller 56 various indications, this remote handling device 57 comprises: the display part of being made up of the liquid crystal panel that shows various information, emit the playback portion and the various operator of warning tones, have can be by operator the operation input from the structure of user's various indications.
But this master controller 56 is connected with outdoor controller 26, indoor set controller 28, refrigerator controller 32, refrigerating box controller 50 and household freezer controller 55 data communications ground, from each controller, collect the data that receive about current running status, and determine the optimum operation pattern at this time point described later according to receiving data, will send outdoor controller 26, indoor set controller 28, refrigerator controller 32, refrigerating box controller 50 and household freezer controller 55 to about the data of the pattern of this optimal mode operation and the service data of each machine.And outdoor controller 26, indoor set controller 28, refrigerator controller 32, refrigerating box controller 50 and household freezer controller 55 are carried out control action described later according to what receive from main control 56 about the data of optimum operation pattern and the service data of each machine.
(1) the optimum operation pattern 1: the refrigerating operaton of air conditioner (Fig. 1)
When at first the refrigerating operaton that is judged as air conditioner 6 in summer etc. at master controller is the best, to send outdoor controller 26, indoor set controller 28 about the data of optimum operation pattern to, refrigerator controller 32, refrigerating box controller 50 and household freezer controller 55.
Outdoor controller 26 makes an above-mentioned inlet of cross valve 14 be communicated with another outlet according to the transmission data from this master controller 56, another inlet is communicated with another outlet, and makes expansion valve 17 standard-sized sheets.Make compressor 13A, 13B operation then, in addition, can think that outdoor controller 26 is set in by the running frequency of adjusting compressor 13A carries out ability control.
When compressor 13A, 13B moved, the gaseous refrigerant of the HTHP of discharging from the discharge side of compressor 13A, 13B flow into the entrance side 16A of heat source side heat exchanger 16 through cross valve 14.Air blast 24 is blown into outdoor air on this heat source side heat exchanger 16, and cold-producing medium is condensation liquefaction after this heat release.That is, at this moment heat source side interchanger 16 as condenser working.This liquid refrigerant comes out from this outlet side 16B through outlet side 16B from the entrance side 16A of heat source side heat exchanger 16, passing through expansion valve 17 back branches, one of branch leads to expansion valve 18, become (step-down) after the low pressure by throttling there, flow into and utilize side heat exchanger 27, there evaporation.
Outdoor controller 26 utilizes the refrigerant temperature of side heat exchanger 27 outlets or utilizes the temperature of side heat exchanger 27 to adjust the running frequency of compressor 13A and the valve opening of expansion valve 18 according to room temperature, so that make the temperature in indoor 2 (in the shops) become the design temperature that utilizes remote handling device 29 to set by the user.Outdoor controller 26 carries out supercooling control by the valve opening of adjusting expansion valve 19 in addition, so that make the inlet temperature TC1 of case side path 21B of series heat exchanger 21 and the difference of outlet temperature TC2 reach predetermined temperature difference (for example 20 ℃).
In addition, indoor set controller 28 is according to the temperature of utilizing side heat exchanger 27 and be utilized side heat exchanger 27 inhaled air temperature, control air blast 15 is to utilizing side heat exchanger 27 to ventilate, so that make the temperature in indoor 2 (in the shops) reach predefined design temperature.
In addition, refrigerator controller 32 makes the cooling storage facilities of cooling device 8 use an above-mentioned inlet of the cross valve 39 of refrigerant loop 9 to be communicated with an outlet, and another inlet is communicated with another outlet.An above-mentioned inlet of cross valve 41 is communicated with an outlet, another inlet is communicated with another outlet, make compressor 37 and compressor 54 operations then.The gaseous refrigerant of the HTHP of discharging from compressor 37 flows into the entrance side 38A of condensers 38 through cross valve 39 after separator 31 separates oil.Outdoor air also is blown on this condenser 38 by air blast 38, the cold-producing medium that flows into condenser 38 condensation after the heat release there.And make magnetic valve 47 standard-sized sheets.
The cold-producing medium of entrance side 38A by this condenser 38 leads to outlet side 38A, comes out therefrom.The cold-producing medium that comes out from condenser 38 flow in this reservoir vessel 36 from the entrance side of reservoir vessel 36, temporarily store and make gas-liquid separation there, the liquid refrigerant that has separated comes out by the case side path 21B of cross valve 41 back inflow series heat exchangers 21 from the outlet of reservoir vessel 36.Flow into the cold-producing medium of the cooling storage facilities of this case side path 21B, become series heat exchanger 21 coolings of low temperature along with the cold-producing medium evaporation of aforesaid idle call refrigerant loop 7, further increase the supercooling state with refrigerant loop 9.More particularly, such as mentioned above, only be cooled to by outdoor controller 26 predefined design temperatures poor (for example 20 ℃).And because as described above, at condenser 38 positive back configuration reservoir vessels 36, so the heat loss when not having supercooling, the while also can be carried out the adjustment of refrigerant amount.
Passing through cross valve 39, cross valve 41 back branches in turn by these series heat exchanger 21 overcooled cold-producing mediums, expansion valve 44 is led to after by magnetic valve 46 in one of them branch, flowed into refrigeration with evaporimeter 43 by (step-down) after the throttling there, evaporate there.Refrigeration with evaporimeter 43 in air in the storehouse of refrigerating box 3 ventilate respectively/circulate by air blast 20, air in the storehouse is cooled off being evaporated under the heat-absorbing action that causes by cold-producing medium, carry out the cooling in the storehouse of refrigerating box 3 whereby.Flow out the outlet side that leads to the oil eliminator 45 of compressor 54 after refrigeration converges with the cryogenic gaseous cold-producing medium of evaporimeter 43.
Another branch of flowing out the cold-producing medium of series heat exchanger 21 back branches arrives expansion valve 51 by magnetic valve 52, and (step-down) after the throttling there flows into the freezing evaporimeter 49 of using, evaporation there.Air is also freezing with the evaporimeter 49 enterprising wind/circulations that work at this by air blast 25 in the storehouse of household freezer 4, and air is cooled under the heat-absorbing action that causes because of cold-producing medium evaporation in the storehouse, and carries out cooling off in the storehouse of household freezer 4.
Flow out freezing cryogenic gaseous cold-producing medium and arrive compressor 54 through check-valves 30 with evaporimeter 49, after being compressed and being raised to the pressure of refrigeration there with the outlet side of vaporization chamber 43, discharge from compressor 54, after oil eliminator 45 separation are fuel-displaced, with the cold-producing medium interflow of using evaporimeter 43 from refrigeration.The cold-producing medium at this interflow repeats to be inhaled into the circulation of the suction side of compressor 37.
The cryogenic temperature that refrigerating box controller 50 is discharged with evaporimeter 43 with the refrigeration of evaporimeter 43 according to the storehouse temperature of refrigerating box 3 or through refrigeration or be drawn into the cold air temperature that refrigerates usefulness evaporimeter 43, with refrigeration with the refrigerant temperature of the outlet side of evaporimeter 43 or refrigerate the valve opening of controlling each expansion valve 44 with the temperature of evaporimeter 43 respectively, cooling in the storehouse of refrigerating box 3 is maintained above-mentioned refrigerated storage temperature on one side whereby, Yi Bian reach the suitable degree of superheat (degree of superheat is certain).
Control the running frequency of compressor 37 according to the pressure (the cooling storage facilities low pressure of cooling circuit 9) of suction side.And all become when closing at each expansion valve 44,51 and just to stop just operation when one of two valves are open simultaneously.
Like this, because can be, so can improve cooling capacity in the evaporimeter 43,49 of refrigerating box 3 and household freezer 4 and cooling storage facilities operational efficiency with refrigerant loop 9 by the low-pressure side cold-producing medium of the idle call refrigerant loop 7 of the air-conditioning side path 21A that flows through series heat exchanger 21 to but storage facilities is cold excessively with the high-pressure side cold-producing medium of refrigerant loop 9.In addition, at this moment flow to the case side path 21B of series heat exchanger 21 by condenser 38, so also can make the degree of superheat of idle call refrigerant loop 7 maintain suitable scope because of cooling off the high-pressure refrigerant of storage facilities with refrigerant loop 9.
In addition, though use the freezing pressure of the cold-producing medium of evaporimeter 49 outflows of using of refrigerant loop 9 to use the cold-producing medium of evaporimeter 43 low because of its evaporating temperature step-down compares outflow refrigeration from the cooling storage facilities, but because boost after being compressed by compressor 54 making before this cold-producing medium and the cold-producing medium interflow of flowing out with evaporimeter 43 from refrigeration, so can be on one side by each evaporimeter 43,49 respectively successfully in the storehouse of cooling refrigeration case 3 and household freezer 4, can by adjustment be cooled storage facilities with the refrigerant pressure of compressor 37 suctions of refrigerant loop 9 without barrier move on one side.
(2) Zui Jia operational mode 2: the heating operation of air conditioner.
The heating operation of air conditioners 6 such as winter is described with Fig. 3 below.When the heating operation that is judged as air conditioner 6 at master controller 56 is the best, will send outdoor controller 26, indoor set controller 28, refrigerator controller 32, refrigerating box controller 50 and household freezer controller 55 to about the data of optimum operation pattern.
Outdoor controller 26 so that an inlet of cross valve 14 links to each other with another outlet, makes another inlet switch stream with the mode that an outlet links to each other according to the transmission data of coming autonomous controller 56.And make expansion valve 17 contract fullys, expansion valve 18 standard-sized sheets.Compressor 13A, 13B operation then. Compressor 13A, 13B one operation, just the gaseous refrigerant of the HTHP of discharging from the discharge side of compressor 13A, 13B utilizes side heat exchanger 27 from oil eliminator 10 via cross valve 14 inflows.As described above, by air blast 15 air in indoor 2 (in the shops) is blown into this and utilizes side heat exchanger 27, cold-producing medium is heat release there, 2 air in heating clamber, the one side liquefaction that is condensed itself.Carry out heating of indoor 2 (in the shops) whereby.
The cold-producing medium that is utilized 27,27 liquefaction of side heat exchanger repeats following circulation: flow out by expansion valve 18 to expansion valve 19 from utilizing side heat exchanger 27, become the air-conditioning side path 21A that (step-down) after the low pressure flow into series heat exchanger 21 by throttling there, there because of after evaporation absorbs heat, through reservoir vessel 23 and be inhaled into the suction side of compressor 13A, 13B.
The running frequency of outdoor controller 26 control compressor 13A, simultaneously with above-mentioned refrigerating operaton equally the valve opening of the valve by adjusting expansion valve 19 carry out supercooling control so that make the temperature in indoor 2 () reach the design temperature with remote handling device 29 settings by the user in the shop in.In addition, indoor set controller 28 is according to the temperature of utilizing side heat exchanger 27 and be utilized control such as top-cross parallel operation 27 inhaled air temperature to the air blast that utilizes side heat exchanger 27 to blow, with the temperature in indoor 2 (in the shops) as predefined design temperature.
In addition, refrigerator controller 32 is so that the cooling storage facilities of cooling device 8 is connected with another outlet with the above-mentioned inlet of the cross valve 39 of refrigerant loop 9 and another inlet is connected with another outlet and the above-mentioned inlet of cross valve 41 is connected with another outlet and another is entered the mouth exports the method formula that is communicated with and switch stream with one.It is identical when in addition, another magnetic valve etc. is a refrigerating operaton with above-mentioned air conditioner 6.Promptly open magnetic valve 46,52, compressor 37 and 54 operations.
Therefore, the gaseous refrigerant of the HTHP of discharging from compressor 37 flows into the case side path 21B of series heat exchangers 21 in turn earlier by cross valve 39,41.That is, before the gaseous refrigerant process condenser 38 of the HTHP of discharging, directly supply with the case side path 21B of series heat exchanger 21 from compressor 37.Because flow into of cold-producing medium in series heat exchanger 21 heat release of the cooling storage facilities of this case side path 21B with refrigerant loop 9, so as described above, the refrigerant cools of the idle call refrigerant loop 7 that the cooling storage facilities is evaporated in air-conditioning side path 21A with the cold-producing medium of refrigerant loop 9, the cold-producing medium of the refrigerant loop of idle call simultaneously 7 can be drawn and cool off the used heat that storage facilities is used the cold-producing medium of refrigerant loop 9.
The cold-producing medium of case side path 21B by this series heat exchanger 21 then flow into the entrance side 38A of condenser 38 via cross valve 39.Air blast 35 also blows outdoor air to this condenser 38, the cold-producing medium that flows into condenser 38 heat release and carry out condensation there.
The cold-producing medium of entrance side 38A by this condenser 38 arrives outlet side 38B, flows out therefrom.The cold-producing medium that flows out from condenser 38 flows in this reservoir vessel 36 from the entrance side of reservoir vessel 36.Temporarily store there and carry out gas, liquid separation.The liquid refrigerant that has separated flows out by cross valve 41 back branches from the outlet of reservoir vessel 36, should lead to magnetic valve 46,52 equally with above-mentioned.
By such operation, when the heating operation of the idle call refrigerant loop 7 of air conditioner 6, just can be by reclaiming the used heat of cooling storage facilities by series heat exchanger 21 with the high-pressure side cold-producing medium of refrigerant loops 9, and it is transported utilize side heat exchanger 27 to idle call refrigerant loop 7.Thereby can try hard to improve the heating capacity of room conditioning, can try hard to improve the efficient of the air-conditioner refrigerator 1 of cooling in the storehouse of carrying out room conditioning, refrigerating box 3 and household freezer 4 in a word, and try hard to realize energy-conservation.
Particularly at this moment, because make the cooling storage facilities flow to series heat exchanger 21 earlier from condenser 38 with the on high-tension side cold-producing medium of refrigerant loop 9, so can carry out expeditiously the heating capacity in the side heat exchanger 27,27 that utilizes at idle call refrigerant loop 7 further being improved from the Waste Heat Recovery of cooling storage facilities with the high-pressure side cold-producing medium of refrigerant loop 9.
At this, because 2 warmer grades make air conditioner 6 become the light hours in the shop, outdoor controller 26 reduces refrigerant flow by the valve opening that reduces expansion valve 19, though so the cooling storage facilities in series heat exchanger 21 becomes surplus with the thermal discharge of the on high-tension side cold-producing medium of refrigerant loop 9, but according to the present invention, because after the on high-tension side cold-producing medium that makes the cooling storage facilities with refrigerant loop 9 flows to series heat exchanger 21, flow to condenser 38 as far as possible, so when the heating operation of idle call refrigerant loop 7, when the cooling storage facilities became surplus with the cold-producing medium thermal discharge in the series heat exchanger 21 of refrigerant loop 9, this superfluous heat was just emitted by condenser 38.Therefore can realize stable Waste Heat Recovery operation.
In addition, when the heating operation of air conditioner 6 as described above, when air conditioner 6 by heat exchanger 21 from the cooling storage facilities during with the shortage of heat of the high-pressure side refrigerant-recovery of refrigerant loop 9, outdoor controller 26 reclaims used heat with regard to the valve opening of controlling expansion valve 19, simultaneously except that reclaiming this used heat, also control the valve opening (recuperation of heat control) of expansion valve 17, so that keep necessary heat.And under this occasion, cooling device 8 also carries out recuperation of heat effectively by making cold-producing medium flow to series heat exchanger 21.In addition when the heating operation of air conditioner 6 as described above, when air conditioner 6 becomes when too much with the heat of the high-pressure side refrigerant-recovery of refrigerant loop 9 from the cooling storage facilities by series heat exchanger 21, outdoor controller 26 is just expansion valve 19 full cut-offs, expansion valve 18 standard-sized sheets, the valve opening of control expansion valve 17 is so that can reclaim necessary heat (recuperation of heat control).In addition, cooling device 8 makes cold-producing medium flow to series heat exchanger 21, when the recovery heat becomes too much, supercooling is increased.Thereby just can realize more stable Waste Heat Recovery operation.
In addition, as described above, switch streams and when the refrigerating operaton of idle call refrigerant loop 7 and during heating operation with cross valve 39 and 41, be set at same direction with the condenser 38 of refrigerant loop 9 and the circulating direction that is connected the cold-producing medium of its reservoir vessel 36 that exports flowing to the cooling storage facilities.Therefore with when the refrigerating operaton, compare during the flow direction changeabout of the cold-producing medium in condenser 38 and the reservoir vessel 36 during with heating operation, can prevent from or suppress to flow through the pressure loss of cooling off the cold-producing medium in the storage facilities usefulness refrigerant loop 9 to take place, can move expeditiously.Particularly because switch stream, so can make cooling storage facilities the simple in structure of refrigerant loop 9 with two cross valves 39,41.
(3) optimum operation pattern during fault detect.
Control (standby operation) when breaking down describes with regard to refrigerating system (compressor 37) or refrigeration system (compressor 54) below.
At first, with Fig. 4 explanation program when compressor 37 or compressor 54 break down.When compressor 37 or compressor 54 broke down, refrigerator controller 32 detected these faults (step S1), and its intention is notified to master controller 56 (step S2).When master controller 56 is apprised of compressor 37 or compressor 54 fault is arranged, determine the operational mode (optimum operation mode 3 described later, 4,5,6) of best standby operation will to send to outdoor controller 26, indoor set controller 28, refrigerator controller 32, refrigerating box controller 50 and household freezer controller 55 (step S3) according to abort situation about the data of this optimum operation pattern.Master controller 56 is notified to abort situation by allocated circuit the terminal installation (step S4) of service company (temperature monitoring center) in addition.Therefore the trouble shooting of taking to repair etc. with interior rapid dispatch service personnel at about 90 minutes from service company.
In addition, master controller 56 should be notified to user (shopkeeper of convenience store etc.) with entering into standby operation, make the predetermined sound sounding give the long-range operation device 57 that is connected (wired connection or wireless connections) with this controller 56, make predetermined information (for example in standby operation) show (step S5).
In addition, when indoor set controller 28 receives transmission data from this master controller 56 when (manually forbidding indication etc.), should report forbid linking to each other (wired connection or wireless connections) with this controller 28 remote handling device 29 operation (promptly, be in the forced service), when the information that makes this intention (for example " in the centralized management ") shows, install 29 operation by remote manipulation the change of running status and design temperature is become invalid (forbidding), that is, (step S6) shifted in the setting of ignoring the operation of remote handling device 29.Then, indoor set controller 28, outdoor controller 26, refrigerator controller 32, refrigerating box controller 50 and household freezer controller 55 are according to coming the transmission data of autonomous controller 56 to begin standby operation described later (step S7, S8, S9).In addition, make the compressor 37 or the compressor 54 that break down out of service, can not use remote handling device 29 operating air conditioner machines 6 whereby, in other words, can be set at the forced service state to air conditioner 6.
But,, also can keep and use the remote handling device 57 that is connected with master controller 56 even in standby operation.Therefore for example the attendant operates long distance behaviour device 57, can make by the operation of indoor set controller 28, outdoor controller 26, refrigerator controller 32, refrigerating box controller 50 and 55 controls of household freezer controller by master controller 56 to stop etc., can be simple and easy and promptly carry out the repairing of abort situation.
(3.1) optimum operation mode 3 (operational mode during fault detect): the control (Fig. 2) of refrigerating system when air conditioner refrigeration moves (compressor 37) when breaking down.
Control when the compressor 37 of the refrigeration usefulness when utilizing Fig. 2 that as described above refrigerating operaton is described breaks down.The part of the cold-producing medium in the cooling device 8 at this moment (cooling cold-producing medium) flows and represents with arrow α, the following describes the part different with above-mentioned refrigerating operaton.
Outdoor controller 26 is according to the transmission data of coming autonomous controller 56, the quantity delivered of the valve opening control cold-producing medium (air-conditioning refrigerant) by adjusting expansion valve 19 at first, so as the outlet temperature TC2 of the case side path 21B of heat exchangers in series 21 outlet temperature during as the fault of being scheduled to (for example-10 ℃).At this, outlet temperature is the temperature of preferentially carrying out freezing, the refrigeration in household freezer 4 and the refrigerating box 3 during fault, is the temperature of determining according to the refrigerant cools ability of the cooling device 8 of air conditioner 6.That is to say, the condensation temperature of cooling device (cooling system portion) 8 sides is controlled to the temperature of the fault outlet of preferentially carrying out the freezing/refrigeration in household freezer 4 and the refrigerating box 3 in air conditioner 6 sides.
In addition, operation and the air blast 15 of outdoor controller 26 and indoor set controller 28 control compressor 13A, 13B are so that design temperature (for example 20 ℃) and design temperature during as this fault when indoor 2 design temperature is set at predefined fault.Therefore descend by indoor 2 temperature and can alleviate the load (refrigeration load, freezing load) of cooling device 8 sides.Outdoor controller 26 and indoor set controller 28 also can change to the temperature conditions (for example below 2 ℃) that the freeze protection controlled condition of the evaporating temperature that depends on indoor set 11 descends from common Hz lower temperature (for example-12 ℃) and change freeze protection control.
In addition, refrigerator controller 32 is according to the transmission data of coming autonomous controller 56, by switching cross valve 42, be communicated with the outlet side of evaporimeter 43 and the outlet side of evaporimeter 49 as shown in Figure 2, be communicated with the entrance side (cross valve 42 and refrigerator controller 32 work as bypass path formation means) of the discharge side and the heat exchangers in series 21 of compressor 54 simultaneously.In addition, make the compressor 37 that breaks down out of service, magnetic valve 47 becomes contract fully.At this moment the cold-producing medium that flows out from evaporimeter 43 collaborates via the cold-producing medium of bypass 70 backs with evaporimeter 49, behind compressor 54, flows into the case side path 21B of series heat exchangers 21 via bypass path 80.That is, the cold-producing medium that flows out from evaporimeter 43,49 does not flow into series heat exchanger 21 via compressor 37, and is such as mentioned above, becomes heat exchangers in series 21 coolings of low temperature because of the evaporation of the cold-producing medium of idle call refrigerant loop 7.More particularly, the cooling storage facilities is cooled as mentioned above like that with the cold-producing medium of refrigerant loop 9, design temperature (10 ℃) when the outlet in heat exchangers in series 21 by outdoor controller 26 controls becomes fault.
In turn by cross valve 39, cross valve 41 back branches, a branch arrives expansion valve 44 by magnetic valve 46 by these series heat exchanger 21 overcooled cold-producing mediums, there by (step-down) after the throttling, flow into and refrigerates with evaporimeter 43 evaporation there.Whereby, carry out cooling in the storehouse of refrigerating box 3.And another of cold-producing medium that flows out series heat exchanger 21 back branches leads to expansion valve 51 by magnetic valve 52, flow into after the throttling (step-down) there freezing with evaporimeter 49, evaporation there.Carry out cooling in the storehouse of household freezer 4 whereby.
Like this, when compressor 37 breaks down, because make the cold-producing medium that flows out from evaporimeter 43,49 not flow into series heat exchanger 21 via compressor 37, so can make cold-producing medium in the circulation in the refrigerant loop 9 of cooling storage facilities by compressor 54, and with the low-pressure side cold-producing medium of the idle call refrigerant loop 7 of the air-conditioning side path 21A of the heat exchangers in series 21 of flowing through will cool off storage facilities with the cold-producing medium supercooling of refrigerant loop 9 to predetermined temperature (design temperature during fault), so can continue to cool off in the storehouse of refrigerating box 3 and household freezer 4.In addition, because design temperature when indoor 2 design temperature of air conditioner 6 changed to predefined fault, so can be by reducing the freezer load that indoor 2 temperature alleviates cooling device 8.Rotting of commodity in refrigerating box 3 and the household freezer 4 are postponed widely, can roughly guarantee to avoid commodity to rot during can be before the attendant repairs.
In addition, under above-mentioned situation, also can preferentially carry out cooling in the storehouse of household freezer 4.Specifically, also can supply with the cold-producing medium of evaporimeter 43, all supply with cold-producing medium (cooling cold-producing medium) freezing with evaporimeter 49 by making expansion valve 44 contract fullys cut off refrigeration.
(3.2) optimum operation pattern 4 (operational mode during fault detect): the control (Fig. 2) of refrigeration system when air conditioner refrigeration moves (compressor 54) when breaking down.
Control when breaking down with the compressor 54 of Fig. 2 explanation refrigeration usefulness when the aforesaid refrigerating operaton.The part of the cold-producing medium in the cooling device 8 at this moment (cooling cold-producing medium) flows and represents with arrow β.The following describes different piece with above-mentioned refrigerating operaton.
Outdoor controller 26 is adjusted the valve opening of expansion valve 19 in the same manner according to the situation of transmission data of coming autonomous controller 56 and above-mentioned optimum operation mode 3, so that outlet temperature (example is-10 ℃) when making outlet temperature TC2 with the case side path 21B of heat exchangers in series 21 as predetermined fault, outdoor controller 26 and indoor set controller 28 are controlled operation and the air blast 15 of compressor 13A, 13B simultaneously, so that design temperature when the design temperature with indoor 2 is set at fault (example is 20 ℃), and design temperature during as this fault.
In addition, refrigerator controller 32 is according to the transmission data of coming autonomous controller 56, identical with the situation of above-mentioned optimum operation mode 3, by switching cross valve 42, be communicated with the outlet side of evaporimeter 43 and the outlet side of evaporimeter 49 as shown in Figure 2, be communicated with the discharge side of compressor 54 and the entrance side of series heat exchanger 21 simultaneously.And the operation of the compressor 54 that stops to break down.At this moment, the cold-producing medium that flows out from evaporimeter 49 collaborates via the cold-producing medium of bypass path 70 backs with evaporimeter 43, via the case side path 21B that flow into series heat exchanger 21 behind the compressor 37.That is, just do not supply with compressor 37, become series heat exchanger 21 coolings of low temperature as described above by evaporation because of the cold-producing medium of idle call refrigerant loop 7 via compressor 54 from the cold-producing medium that evaporimeter 43,49 flows out.Therefore passed through cross valve 39, cross valve 41 back branches in turn by series heat exchanger 21 overcooled cold-producing mediums, one of them branch flows in refrigeration is used for refrigerating box 3 with evaporimeter 43 the storehouse by magnetic valve 46 and expansion valve 44 cools off, another branch flows into freezing with evaporimeter 49 by magnetic valve 52 and expansion valve 51, be used for cooling off in the storehouse of household freezer 4.
Like this, because when compressor 54 breaks down, make the cold-producing medium that flows out from evaporimeter 43,49 just not flow into series heat exchanger 21 via compressor 54, so can make cold-producing medium utilize compressor 37 in the circulation in the refrigerant loop 9 of cooling storage facilities, and by series heat exchanger 21 will cool off storage facilities with the cold-producing medium supercooling of refrigerant loop 9 to predetermined temperature (design temperature during fault), so can continue to cool off in the storehouse of refrigerating box 3 and household freezer 4.In addition, because design temperature (20 ℃) when indoor 2 design temperature of air conditioner 6 changed to predefined fault, so can be by reducing freezing/refrigeration load that indoor 2 temperature alleviates cooling device 8.Therefore, same situation in the time of can breaking down with compressor 37 postpones the rotting of commodity in refrigerating box 3 and the household freezer 4 etc. widely, roughly guarantees to avoid rotting of commodity during can be before the attendant repairs.
(3.3) optimum operation pattern 5 (operational mode during fault detect): air conditioner is the control (Fig. 5) of refrigerating system (compressor 37) when breaking down when heating operation.
Utilize Fig. 5 that control when the compressor 37 of the refrigeration usefulness when heating operation as described above breaks down is described.The part of the cold-producing medium in the cooling device 8 at this moment (cooling cold-producing medium) flows and represents with arrow γ.The part different with above-mentioned heating operation below is described.
Outdoor controller 26 is according to the transmission data of coming autonomous controller 56, identical with above-mentioned optimum operation mode 3,4 situation, adjust the valve opening of expansion valve 19, so that temperature during as predetermined fault (for example-10 ℃) with the outlet temperature TC2 of the case side path 21B of series heat exchanger 21, outdoor controller 26 and indoor set controller 28 are controlled operation and the air blast 15 of compressor 13A, 13B simultaneously, so that design temperature when the design temperature with indoor 2 is set at fault (for example 16 ℃), and design temperature during as this fault.
In addition, refrigerator controller 32 is according to the transmission data of coming autonomous controller 56, identical with above-mentioned optimum operation mode 3,4 situation, by switching cross valve, as shown in Figure 5, be communicated with the outlet side of evaporimeter 43 and the outlet side of evaporimeter 49, be communicated with the discharge side of compressor 54 and the entrance side of series heat exchanger 21 simultaneously.And the operation of the compressor 37 that stops to break down makes magnetic valve 47 contract fullys.At this moment the situation with above-mentioned optimum operation mode 3 is identical, the cold-producing medium that flows out from evaporimeter 43 through bypass path 70 after with the cold-producing medium interflow of evaporimeter 49, behind compressor 54, via bypass path 80 inflow series heat exchangers 21 case side path 21B.Promptly the cold-producing medium that flows out from evaporimeter 43,49 does not just flow into series heat exchanger 21 via compressor 37, because of series heat exchanger 21 coolings that become low temperature by the evaporation of the cold-producing medium of foregoing idle call refrigerant loop 7.More particularly, the cooling storage facilities is such as mentioned above with the cold-producing medium of refrigerant loop 9, design temperature (10 ℃) when the outlet side that is controlled at series heat exchanger 21 by outdoor controller 26 is cooled to fault.Therefore passed through cross valve 39, cross valve 41 back branches in turn by series heat exchanger 21 overcooled cold-producing mediums, a branch flows into refrigeration evaporimeter 43 by magnetic valve 46 and expansion valve 44, be used for cooling in the storehouse of cooling refrigeration case 3, another branch flows into freezing with evaporimeter 49 by magnetic valve 52 and expansion valve 51, be used for cooling off in the storehouse of household freezer 4.
Like this, even because under the situation that compressor 37 breaks down when heating operation, also the situation with above-mentioned optimum operation mode 3 is identical, make from evaporimeter 43,49 cold-producing mediums that flow out just do not flow into series heat exchanger 21 via compressor 37, so can make cold-producing medium pass through compressor 54 in the circulation in the refrigerant loop 9 of cooling storage facilities, and make the cold-producing medium storage facilities with the cold-producing medium of refrigerant loop 9 by series heat exchanger 21 supercooling to predetermined temperature (design temperature during fault), so can continue to cool off in the storehouse of refrigerating box 3 and household freezer 4.In addition, because design temperature (16 ℃) when indoor 2 design temperature of air conditioner 6 is changed to predetermined fault, so can be by reducing freezing, the refrigeration load that indoor 2 temperature alleviates cooling device 8, refrigerating box 3 and household freezer 4 interior commodity are rotted to postpone greatly, to the attendant before repairing during, can roughly guarantee to prevent rotting of commodity.
(3.4) optimum operation pattern 6 (operational mode during fault detect): the control (Fig. 5) of refrigeration system when the air conditioner heating operation (compressor 54) when breaking down
Control when breaking down with the compressor 54 of Fig. 5 explanation refrigeration usefulness when the heating operation as described above.The part of the cold-producing medium in the cooling device 8 at this moment (cooling cold-producing medium) flows and represents with arrow δ.The part different with above-mentioned heating operation below is described.
Outdoor controller 26 is similarly adjusted the valve opening of expansion valve 19 according to the situation of transmission data of coming autonomous controller 56 and above-mentioned optimum operating mode 3,4, so that outlet temperature during as predetermined fault (for example-10 ℃) with the outlet temperature TC2 of the case side path 21B of series heat exchanger 21, outdoor controller 26 and indoor set controller 28 are controlled operation and the air blast 15 of compressor 13A, 13B simultaneously, so that design temperature when the design temperature with indoor 2 is set at fault (for example 16 ℃), and design temperature during as this fault.
The refrigerator controller 32 in addition, it is the refrigerator controller of telling from master controller 56 32, according to the transmission data of coming autonomous controller 56, identical with above-mentioned optimum operation mode 3,4 situation, by switching cross valve 42, as shown in Figure 5, the outlet side of evaporimeter 43 and the outlet side of evaporimeter 49 are communicated with, the discharge side of compressor 54 and the entrance side of series heat exchanger 21 are communicated with.And the operation of the compressor 54 that stops to break down makes magnetic valve 47 become contract fully.This situation is identical with above-mentioned optimum operation pattern 4 situations, and the cold-producing medium that flows out from evaporimeter 49 collaborates via the cold-producing medium of bypass path 70 with evaporimeter 43, flows into the case side 21B of series heat exchangers 21 via compressor 37 backs.That is, just do not supply with compressor 37 via compressor 54 from the cold-producing medium that evaporimeter 43,49 flows out, the series heat exchanger 21 that is become low temperature by the evaporation because of the cold-producing medium of the idle call refrigerant loop 7 by as described above cools off.More particularly, by outdoor controller 26 controls, make this cold-producing medium design temperature (10 ℃) when the outlet side of series heat exchanger 21 is cooled to fault.Therefore, pass through cross valve 39 in turn by series heat exchanger 21 overcooled cold-producing mediums, cross valve 41 back branches, a branch flow into refrigeration evaporimeter 43 by magnetic valve 46 and expansion valve 44, be used for cooling in the storehouse of cooling refrigeration case 3, another branch flow into freezing with evaporimeter 49 by magnetic valve 52 and expansion valve 51, be used for cooling off in the storehouse of household freezer 4.
Therefore, under the situation that compressor 54 breaks down when heating operation, identical with the situation of above-mentioned optimum operation pattern 4, because make from evaporimeter 43,49 cold-producing mediums that flow out just do not flow into series heat exchanger 21 via compressor 54, so can make cold-producing medium pass through compressor 37 in the circulation in the refrigerant loop 9 of cold storage equipment, and use the cold-producing medium supercooling of refrigerant loop 9 to predetermined temperature (design temperature during fault) because will cool off storage facilities by series heat exchanger 21, so can proceed cooling in the storehouse of refrigerated cabinet 3 and household freezer 4, in addition, because design temperature (16 ℃) when indoor 2 design temperature of air conditioner 6 is changed to predefined fault, so can be by reducing the freezer load that indoor 2 temperature alleviates cooling device 8.Rotting of commodity in refrigerating box 3 and the household freezer 4 are postponed widely, during repairing to the attendant before, can roughly guarantee to avoid rotting of commodity.
As described above, because the air-conditioner refrigerator of present embodiment 1 is at when refrigeration refrigerating system (compressor 37) or refrigeration system (compressor 54) when breaking down, make the cold-producing medium that flows out from evaporimeter 43,49 just not flow into series heat exchanger 21 and make its supercooling via compressor 37 that breaks down or compressor 54, design temperature when simultaneously indoor 2 design temperature of air conditioner 6 being changed to refrigeration, freezing preferential fault is so can make the rotting of commodity in refrigerating box 3 and the household freezer 4 postpone widely.
Particularly at refrigerating system (compressor 37) or refrigeration system (compressor 54) when breaking down, by change control, so that outlet temperature during as fault (for example-10 ℃) with the outlet temperature TC2 of the case side path 21B of series heat exchanger 21, can be cooled to preferentially to carry out freezing in household freezer 4 and the refrigerating box 3 to the cold-producing medium of cooling device (cooling system portion) 8 sides (cooling cold-producing medium) with the cold-producing medium (idle call cold-producing medium) of air conditioner 6 sides that do not break down, the temperature of refrigeration, thus the rotting of commodity in refrigerating box 3 and the household freezer 4 etc. further postponed.
In addition, because this air-conditioner refrigerator 1 is ignored by the running status of the remote handling device 29 of air conditioner 6 sides and the alter operation of design temperature, can prevent really that user (shopkeeper of convenience store etc.) is not because of noting ending the situation generation of standby operation during above-mentioned standby operation.And be presented on the long-range operation device 29 because the information (in the standby operation) of its intention is waited, thus the user judge immediately because of being in standby operation and can not operate, also can avoid providing misunderstanding when being unusual to the user.Even and in standby operation,,, can not produce overslaugh to the repairing at fault place so the attendant can stop the standby operation operation by operation remote device 57 because the remote handling device 57 that is connected with master controller 56 also can use yet.
In addition, though be example explanation in the above-described embodiments with the convenience store, be not limited thereto, the present invention is effective to air-conditioner refrigerator in the various refrigeration systems of the cooling of carrying out room conditioning and cooling storage facilities.And represented in an embodiment each sets value and matched tube structure is not a limitation of the invention, can carry out suitable change in the scope that does not break away from main idea of the present invention.
Claims (5)
1, a kind of air-conditioner refrigerator, this air-conditioner refrigerator comprises: have compressor, heat source side heat exchanger and utilize the side heat exchanger and utilize the side heat exchanger to carry out the air-conditioning system portion of room conditioning by this, be used for providing the operating means of various indications to above-mentioned air-conditioning system portion, has the cooling compressor, condenser and evaporimeter also cool off the refrigeration system portion of cooling off in the storehouse of storage facilities by this evaporimeter, with the on high-tension side cooling of the idle call cold-producing medium of the low-pressure side of supplying with above-mentioned air-conditioning system portion and above-mentioned refrigeration system portion series heat exchanger with cold-producing medium, and make the each part mentioned above thermally coupled
It is characterized in that comprising: when above-mentioned cooling is broken down with compressor, form the cooling make to come out from above-mentioned evaporimeter and do not form means via above-mentioned cooling just imports to the inlet of above-mentioned series heat exchanger with compressor the bypass path of bypass path with cold-producing medium; With
When above-mentioned cooling is broken down with compressor, in above-mentioned heat exchangers in series, make in above-mentioned air-conditioning system portion with cold-producing medium and carry out predefined operation and make becoming the forced service control device of controlling running status by force at least by the indication of ignoring from the aforesaid operations device at this run duration in order to cool off above-mentioned cooling by above-mentioned air-conditioning refrigerant.
2, air-conditioner refrigerator as claimed in claim 1, it is characterized in that: above-mentioned forced service control device is supplied with the quantity delivered of above-mentioned air-conditioning refrigerant and the target temperature of the room conditioning of being determined by above-mentioned air-conditioning system portion is changed to predetermined air-conditioning target temperature for the above-mentioned cooling in the above-mentioned series heat exchanger is controlled as the predeterminated target outlet temperature to above-mentioned series heat exchanger with the outlet temperature of cold-producing medium, as predefined operation.
3, air-conditioner refrigerator as claimed in claim 1 or 2 is characterized in that: the aforesaid operations device has communicating department from predefined operation to the user that circulate a notice of its intention when making above-mentioned air-conditioning system portion carry out.
4, air-conditioner refrigerator as claimed in claim 1 or 2 is characterized in that: also can stop to indicate other operating means that offers this air-conditioner refrigerator to the major general even above-mentioned air-conditioner refrigerator has when making the operation that above-mentioned air-conditioning system portion is scheduled to.
5, a kind of control method of air-conditioner refrigerator, this air-conditioner refrigerator equipment comprises: have compressor, heat source side heat exchanger and utilize the side heat exchanger and utilize the side heat exchanger to carry out the air-conditioning system portion of room conditioning by this, be used for providing the operating means of various indications to above-mentioned air-conditioning system portion, has cooling compressor, condenser and evaporimeter also cool off the refrigeration system portion of cooling off in the storehouse of storage facilities by this evaporimeter, with the on high-tension side cooling of the idle call cold-producing medium of the low-pressure side of supplying with above-mentioned air-conditioning system portion and above-mentioned refrigeration system portion series heat exchanger with cold-producing medium, and make the each part mentioned above thermally coupled, it is characterized in that:
When above-mentioned cooling is broken down with compressor, formation make the cooling of coming out from above-mentioned evaporimeter with cold-producing medium not via above-mentioned cooling import to compressor above-mentioned series heat exchanger inlet bypass path and above-mentioned series heat exchanger, make above-mentioned air-conditioning system portion carry out predefined operation with cold-producing medium at least in order to cool off above-mentioned cooling by above-mentioned air-conditioning refrigerant, and make at this run duration and become the forced service state by the indication of ignoring from the aforesaid operations device.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004017906A JP4290025B2 (en) | 2004-01-27 | 2004-01-27 | Air conditioning refrigeration apparatus and control method of air conditioning refrigeration apparatus |
| JP017906/04 | 2004-01-27 | ||
| JP017906/2004 | 2004-01-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1648556A CN1648556A (en) | 2005-08-03 |
| CN1304802C true CN1304802C (en) | 2007-03-14 |
Family
ID=34879039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100896383A Expired - Fee Related CN1304802C (en) | 2004-01-27 | 2004-10-29 | Air refrigerating plant and control method for air conditionin gplant |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4290025B2 (en) |
| CN (1) | CN1304802C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010002073A (en) * | 2008-06-18 | 2010-01-07 | Daikin Ind Ltd | Air conditioning device |
| CN107631395A (en) * | 2017-11-01 | 2018-01-26 | 佛山市淇特科技有限公司 | A kind of kitchen cooling-down air conditioner |
| CN109654663B (en) * | 2018-12-24 | 2021-01-01 | 宁波奥克斯电气股份有限公司 | Multi-split air conditioner fault prompting method and device and air conditioner |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1292079A (en) * | 1998-12-25 | 2001-04-18 | 大金工业株式会社 | Refrigerating plant |
| JP2002228297A (en) * | 2001-02-02 | 2002-08-14 | Daikin Ind Ltd | Refrigerating device |
| JP2002357367A (en) * | 2001-05-31 | 2002-12-13 | Daikin Ind Ltd | Refrigerating device |
| CN1464962A (en) * | 2001-06-26 | 2003-12-31 | 大金工业株式会社 | Freezing device |
-
2004
- 2004-01-27 JP JP2004017906A patent/JP4290025B2/en not_active Expired - Fee Related
- 2004-10-29 CN CNB2004100896383A patent/CN1304802C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1292079A (en) * | 1998-12-25 | 2001-04-18 | 大金工业株式会社 | Refrigerating plant |
| JP2002228297A (en) * | 2001-02-02 | 2002-08-14 | Daikin Ind Ltd | Refrigerating device |
| JP2002357367A (en) * | 2001-05-31 | 2002-12-13 | Daikin Ind Ltd | Refrigerating device |
| CN1464962A (en) * | 2001-06-26 | 2003-12-31 | 大金工业株式会社 | Freezing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1648556A (en) | 2005-08-03 |
| JP4290025B2 (en) | 2009-07-01 |
| JP2005214435A (en) | 2005-08-11 |
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