CN1661302B - Air conditioner freezer - Google Patents
Air conditioner freezer Download PDFInfo
- Publication number
- CN1661302B CN1661302B CN 200410095054 CN200410095054A CN1661302B CN 1661302 B CN1661302 B CN 1661302B CN 200410095054 CN200410095054 CN 200410095054 CN 200410095054 A CN200410095054 A CN 200410095054A CN 1661302 B CN1661302 B CN 1661302B
- Authority
- CN
- China
- Prior art keywords
- air
- refrigerant
- temperature
- compressor
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
Landscapes
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
An air conditioning refrigerator is provided with an air conditioning system part provided with a compressor for air conditioning, a heat exchanger on a heat source side, and a heat exchanger on a useside to perform air conditioning in one room by the heat exchanger on the use side, a refrigerating system part provided with a compressor for cooling, a condenser, and an evaporator to cool the inside of cooling storage facility arranged in one room by the evaporator, and a cascade heat exchanger for performing heat exchange between refrigerant on a low pressure side of the air conditioning system part and refrigerant on a high pressure side of the refrigerating system part. A temperature sensor for controlling air conditioning is provided in a section where air conditioning load or fluctuation of air conditioning load is high in one room. This refrigerator is provided with a control means for continuing operation of the compressor for air conditioning when the air conditioning system part reaches an air conditioning thermostat turning-off in accordance with a value detected by the temperature sensor and controlling flow rate of refrigerant on the low pressure side of the air conditioning system part which flows into the cascade heat exchanger.
Description
Technical field
For example the present invention relates to be used for shop etc. is carried out air conditioning and simultaneously the cooling bunkerage carried out the air-conditioner refrigerator that cools off in the cabinet.
Background technology
In recent years, (indoor) utilizes air conditioner to carry out the refrigeration and heating air conditioning in the shop such as convenience store.In addition, refrigeration or the open show cabinet of freezing usefulness and the sliding door type show cabinet (cold storage equipment) of display vending articles is set in the shop, these equipment carry out cooling (for example patent documentation 1) in the cabinet by refrigerator.
The patent documentation spy opens the 2002-174470 communique
Summary of the invention
In this air-conditioner refrigerator, only the operation of air-conditioning system portion, the operation of cooling system portion are controlled in the load of the load of corresponding air conditioning, cooling device respectively, can not improve the energy utilization efficiency (COP etc.) of entire system.
The present invention puts in view of the above problems and develops, and its purpose is, a kind of air-conditioner refrigerator that improves the utilization ratio of energy is provided.
The invention is characterized in, comprising: air-conditioning system portion, it has idle call compressor, heat source side heat exchanger and utilizes the side heat exchanger, utilizes this to utilize the side heat exchanger to carry out an indoor air conditioning; Refrigeration system portion, it has cooling with compressor, condenser and evaporimeter, utilizes this evaporimeter to be configured in the cabinet of above-mentioned one indoor cold storage equipment and cools off; Fountain U type pipe in pipe, its effect are to carry out heat exchange between the on high-tension side refrigerant of refrigerant and above-mentioned refrigeration system portion of above-mentioned air-conditioning system portion low-pressure side; Temperature sensor is used in air-conditioning control, and it is located at above-mentioned one indoor air-conditioning load or the big position of this air-conditioning load change; Control device, it controls the cold medium flux of the above-mentioned air-conditioning system portion low-pressure side of above-mentioned fountain U type pipe in pipe to monitor value that should temperature sensor.
In the present invention, because the control temperature sensor is set at an indoor air-conditioning load or the big position of this air-conditioning load change, and the big situation of corresponding air-conditioning load is moved control to the idle call compressor, or detect the change of air-conditioning load rapidly, and rising, the reduction of corresponding above-mentioned one indoor temperature, the idle call compressor is moved control, above-mentioned one indoor temperature is stablized rapidly.
Behind an indoor temperature stabilization, stop to flow into the refrigerant that utilizes the side heat exchanger, make refrigerant flow into fountain U type pipe in pipe from the idle call compressor.When the cold medium flux of the air-conditioning system portion low-pressure side of this fountain U type pipe in pipe increases, heat exchange between the on high-tension side refrigerant of refrigerant and refrigeration system portion of promotion air-conditioning system portion low-pressure side, make the load of refrigeration side stable on this basis, it is stable.Usually, when the energy utilization efficiency with the energy utilization efficiency of air-conditioning system portion and refrigeration system portion compares, because the energy utilization efficiency of air-conditioning system portion is good, so when promoting to make the heat exchange of fountain U type pipe in pipe, can improve energy utilization efficiency as native system integral body.
At this moment, when moving the idle call compressor in refrigeration heat is closed, its speed also can be controlled in the predefined frequency range.
In addition, in above-mentioned air-conditioning system portion, obtain the target speed of above-mentioned idle call compressor, this speed is used to preestablish the setting temperature difference that the temperature difference of on high-tension side refrigerant inlet temperature in refrigerant loop and outlet temperature is used in the above-mentioned cooling that flows into above-mentioned fountain U type pipe in pipe, when this target speed is in above-mentioned predefined frequency range, the speed of above-mentioned idle call compressor is controlled in this target speed, on the other hand, when the lower frequency limit of speed and above-mentioned predefined frequency roughly consistent, simultaneously, the above-mentioned temperature difference and the above-mentioned setting temperature difference are in a ratio of set point of temperature when above, and the upper limiting frequency of speed and above-mentioned predefined frequency is roughly consistent, simultaneously, the above-mentioned temperature difference and the above-mentioned setting temperature difference are in a ratio of set point of temperature when following, also can end the operation of above-mentioned idle call compressor.
In addition,, also can adjust above-mentioned target speed, so that the above-mentioned cooling that flows into above-mentioned fountain U type pipe in pipe is more than the outside air temperature with the outlet temperature of the on high-tension side refrigerant in refrigerant loop in above-mentioned air-conditioning system portion.In addition, the above-mentioned setting temperature difference also can corresponding outside air temperature change.Above-mentioned idle call refrigerant loop is provided with first expansion valve at above-mentioned heat source side heat exchanger and above-mentioned the utilization between the side heat exchanger, simultaneously, refrigerant pipe between above-mentioned heat source side heat exchanger and above-mentioned first expansion valve is diverged, and Jie is connected to this bifurcated pipe on the above-mentioned fountain U type pipe in pipe by second expansion valve, also can control the valve opening of above-mentioned second expansion valve, so that the above-mentioned temperature difference is the above-mentioned setting temperature difference.
Above-mentioned one indoor be convenience store, also can near the gateway in this shop, be provided with the said temperature sensor.
In addition, above-mentioned one indoor be convenience store, also can near the installation glass in this shop, be provided with the said temperature sensor, the said temperature sensor also can be located in the remote controller operating means of air conditioner.
In the present invention, because the position in the change maximum of an indoor air-conditioning load or this air-conditioning load has air-conditioning control temperature sensor, so an indoor temperature is promptly stablized, one indoor stable after, stop to flow into the refrigerant that utilizes the side heat exchanger, in the refrigerant inflow fountain U type pipe in pipe from the idle call compressor.Thus, when the cold medium flux of the air-conditioning system portion low-pressure side of fountain U type pipe in pipe increased, it was stable, can improve the energy utilization efficiency as entire system.
Description of drawings
Fig. 1 is the figure of system architecture that shows the refrigerant loop of the air-conditioner refrigerator contain the embodiment of the invention, and wherein the double dot dash line frame table shows amplifying unit, the 3rd compressor constant speed;
Fig. 2 is the figure of heating operation that is used to illustrate the air-conditioner refrigerator air-conditioning system portion of the embodiment of the invention, and wherein refrigerating system sales counter number is 5, the 3rd compressor constant speed;
Fig. 3 is the stereogram that shows configuration structure in the shop of convenience store;
Fig. 4 is the flow chart of display remote controller sensing control;
Fig. 5 is the flow chart that shows the action in hot the closing of freezing;
Fig. 6 is the flow chart that shows the action in hot the closing of freezing.
The specific embodiment
Below, the embodiment that present invention will be described in detail with reference to the accompanying.
Fig. 1 is the figure of system architecture that shows the refrigerant loop of the air-conditioner refrigerator 1 contain the embodiment of the invention.This air-conditioner refrigerator 1 for example is applicable in the shop such as convenience store, its realize in shop 2 air conditioning with as the refrigerator 3 of being located at 2 storage equipment (equipment is cooled) or interior cooling of cabinet of refrigerator 4 in the shop in.In addition, refrigerator 3 is to be cooled to refrigerated storage temperature (+3 ℃～+ 10 ℃) in the cabinet, and the cabinet of display beverage or chilled food etc., reach in freezer 4 is to be cooled to cryogenic temperature (30 ℃～-10 ℃) in the cabinet, and the cabinet of display frozen food or freezing dessert (cold Fruit) etc.
This air-conditioner refrigerator 1 have the air-conditioning system portion 6 that carries out 2 air conditionings in the shop and carry out 2 refrigerator 3 in the shop in or the cabinet in the reach in freezer 4 in the cooling system portion 8 of cooling off.Air-conditioning system portion 6 has and is located in the shop a plurality of indoor units 11 of 2, is located at the outdoor unit 12 outside the shop and strides the idle call refrigerant loop of being located between these unit 11,12 7.
This idle call refrigerant loop 7 utilizes is located at utilizing side heat exchanger 27, be located at the heat source side heat exchanger 16 in the outdoor unit 12 and carry out freeze cycle as the compressor 13A and the 13B of compression unit 13 in the indoor unit 11.
Particularly, compressor 13A is conversion compressor (イ Application バ one タ Ya Shrink Machine), and compressor 13B is a constant speed control compressor.These compressors 13A, 13B are connected in parallel, and are situated between and by check-valves 5A, 5B the discharge side of each compressor 13A and 13B are converged, and are connected to an inlet of cross valve.In addition, the inlet of cross valve 14 outlet connection heat source side heat exchanger 16.This heat source side heat exchanger 16 constitutes by the smaller entrance side 16A of the flow path resistance of many pipe arrangements arranged side by side with these outlet side 16B that collect on minority pipe arrangement arranged side by side or the wall scroll pipe arrangement.And the outlet of this heat source side heat exchanger 16 outlet side 16B is situated between by after expansion valve 17 and expansion valve 18 shunt, is connected to the inlet that respectively utilizes side heat exchanger 27 of indoor unit 11.
After the outlet that respectively utilizes side heat exchanger 27 converges, be connected to another inlet of the cross valve 14 in the outdoor unit 12, another outlet of cross valve 14 is situated between and is connected to accumulator 23 by check-valves 22.The outlet of this accumulator 23 is connected to the suction side of compressor 13A, 13B, and thus, the refrigerant of being discharged by compression unit 13 is via heat source side heat exchanger 16 and utilize side heat exchanger 27 to turn back to compression unit 13.
In addition, in this idle call refrigerant loop 7, the refrigerant pipe fork between expansion valve (first expansion valve) 17 and the expansion valve 18, and Jie is connected to this bifurcated pipe on the fountain U type pipe in pipe 21 by expansion valve (second expansion valve) 19.This fountain U type pipe in pipe 21 uses heat-exchangers of the plate type, it has following structure, the a plurality of heat transfer plates of lamination, mutual coolant path 21A, the 21B that forms two kinds of refrigerant circulations between each heat transfer plate is situated between when two kinds of refrigerants are flowed through in abutting connection with coolant path 21A, 21B and carries out heat exchange by heat transfer plate.The inlet of a coolant path 21A of this fountain U type pipe in pipe 21 is connected on the expansion valve 19, and its outlet is connected to the inlet of accumulator 23.Thus, after the refrigerant that utilizes expansion valve 19 decompressions supplies in the fountain U type pipe in pipe 21, turn back to compression unit 13.That is, in this air-conditioner refrigerator 1,, form via the path α that utilizes side heat exchanger 27 with via the path β of fountain U type pipe in pipe 21 as the refrigerant circulating path.
Outside air-conditioner controller 26 is made of universal microcomputer, and it is according to the equipment of the air-conditioning system portion 6 of unit 12 sides outside outside air temperature or the refrigerant pressure controling chamber.Indoor air-conditioner controller 28 is made of universal microcomputer, and it is indicated the equipment of control indoor unit 11 sides by the user of remote controller 128 inputs according to being situated between, with the data communications such as information of respective user indication to outside air-conditioner controller 26.In addition, pressure fan 24 is pressure fans that thermotropism source heat exchanger 16 is carried outer gas, and pressure fan 15 is to utilizing side heat exchanger 27 to carry the pressure fan of room air.On the other hand, cooling system portion 8 has refrigerator 3 or the usefulness of the cooling between reach in freezer 4 and the outdoor unit 12 refrigerant loop 19 that is crossed on as storage equipment.
This cooling is with in the refrigerant loop 9, utilize the refrigeration be located in the refrigerator 3 with evaporimeter 43, be located at the condenser (heat exchanger) 38 in the outdoor unit 12 and carry out refrigerant and circulate as the compressor 37 of compression unit and compressor 54.
Particularly, the discharge side of compressor 37 is situated between and is connected on the inlet of cross valve 39 by second separator 31, and an outlet of this cross valve 39 is connected to the inlet of condenser 38.This condenser 38 constitutes by the smaller entrance side 38A of the flow path resistance that contains wall scroll pipe arrangement arranged side by side with these outlet side 38B that collect on minority pipe arrangement arranged side by side or the wall scroll pipe arrangement.Then, the outlet of the outlet side 38B of this condenser 38 is connected to the inlet of storage tank 36, and the outlet of this storage tank 36 is connected to an inlet of cross valve 41.That is, storage tank 36 is connected to the refrigerant downstream of condenser 38.
An outlet of cross valve 41 is connected on the inlet of fountain U type pipe in pipe 21 opposite side coolant path 21B.In addition, the outlet of the coolant path 21B of fountain U type pipe in pipe 21 is connected in another outlet of cross valve 39, and another outlet of this cross valve 39 is connected to another inlet of cross valve 41.With another outlet of this cross valve 41 is three along separate routes, first bifurcated pipe is situated between successively is connected to refrigeration inlet with evaporimeter 43 by magnetic valve 47,46 and expansion valve 44, second bifurcated pipe is situated between successively is connected to another refrigeration with the inlet of evaporimeter 43 by magnetic valve 46 and expansion valve 44, and the 3rd bifurcated pipe is situated between is connected to freezing inlet with evaporimeter 49 by magnetic valve 52 and expansion valve 51.In addition, the series loop of this magnetic valve 52 and expansion valve 51 and magnetic valve 53 are connected in parallel.Freezing outlet Jie with evaporimeter 49 is connected to the suction side of compressor 54 by check-valves 30, and between refrigeration is with the magnetic valve 46 and 47 of evaporimeter 43 sides, is situated between by check-valves 48 connections.The little compressor of power that this compressor 54 is ratio piston compressors 37, it discharges side Jie is connected in series in compressor 37 by the 3rd separator 45 suction side.
In addition, each refrigeration is connected between the 3rd separator 45 and the compressor 37 after converging with the outlet of evaporimeter 43.Suction side Jie of compressor 37 is connected to the outlet of second separator 31 by check-valves 42.
Outside cooling controller 32 is made of universal microcomputer, and it is according to the equipment of the cooling system portion 8 of unit 12 sides outside outside air temperature or the refrigerant pressure controling chamber.In addition, indoor refrigeration controller 50 is made of universal microcomputer, and it is according to the equipment of refrigeration with the in-cabinet temperature control cooling system portion 8 of bunkerage (refrigerator 3).In addition, the freezing controller in indoor 55 is made of universal microcomputer, and it is according to the equipment of freezing in-cabinet temperature control cooling system portion 8 with bunkerage (reach in freezer 4).Pressure fan 35 is pressure fans from extraneous airs to condenser 38 that carry, and pressure fan 20 is pressure fans of air in the cabinet of condenser 38 conveying refrigerators 3, and pressure fan 25 is pressure fans of air in the cabinet of freezing usefulness evaporimeter 49 conveying reach in freezers 4.
In addition, this air-conditioner refrigerator 1 has master controller 56.Master controller 56 is made of general microcomputer, it carries out the control of air-conditioner refrigerator 1 integral body by carrying out data communication with outside air-conditioner controller 26, indoor air-conditioner controller 28, outside cooling controller 32, indoor refrigeration controller 50 and the freezing controller 55 in indoor.In addition, in this air-conditioner refrigerator 1, with cooling different refrigerant of use in the refrigerant loop 9, for example in idle call refrigerant loop 7, use R410A, use in cooling and use the R404A higher in the refrigerant loop 9 than the boiling point of R410A in idle call refrigerant loop 7.Like this, owing to can in each refrigerant loop of this air-conditioner refrigerator 1, use only refrigerant, can improve the free degree of loop design.
Fig. 3 is the stereogram in the convenience store shop.
In this figure, positive setting can be seen in the shop 2 glass 64 once clearly outside the shop in the shop, is provided with the gateway 60 in this shop that is used to come in and go out on the right side in this front, shop.When from the gateway 60 when entering in the shop 2, dispose the bookshelf 62 of placing books etc. along above-mentioned glass 64.In addition, 60 right side wall is provided with cashier's machine 65 in the gateway, and 60 left side wall is provided with refrigerator 3 and (enters the formula showcase: ウ ォ-Network イ Application シ ョ-ケ-ス) and reach in freezer 4 in the gateway.That is, these cooling bunkerages 3,4 are configured in the inboard in this shop of leaving gateway 60.In addition, at the wall configuration refrigerator 3 (open show cabinet: オ one プ Application シ ヨ one ケ one ス) relative with gateway 60 sides, the central authorities in the shop are provided with the display rack 63 of display commodity.
Outside the shop, dispose outdoor unit 12, this outdoor unit 12 be situated between by cooling with refrigerant loop 9 be disposed at the shop in 2 refrigerator 3 and reach in freezer 4 be connected.In addition, this outdoor unit 12 be situated between by idle call refrigerant loop 7 be disposed at the shop in indoor unit 11A, the 11B of 2 ceiling be connected.Indoor unit 11A be configured in the cooling bunkerage 3,4 near, indoor unit 11B is configured in the position of leaving from above-mentioned cooling bunkerage 3,4.The air-conditioning ability difference of these indoor units 11A, 11B, 60 near indoor unit 11B are than big from the air-conditioning ability of the near indoor unit 11A of cooling bunkerage 3,4 from the gateway.
In said structure, wired formula remote controller (remote handling device) 128 is set near 2 the gateway 60 in the shop, this remote controller 128 has air-conditioning control temperature sensor 129.Near the gateway 60 in shop 2, people's discrepancy is frequent, is that 2 interior maximum air-conditioning load variations become big position easily in the shop, simultaneously when being provided with glass door near 2 the gateway 60 in the shop, being subjected to direct sunlight etc. easily, on this meaning, also is that the air-conditioning load becomes big position.
When this position is provided with temperature sensor 129, the big situation of corresponding air-conditioning load, idle call compressor 13 is moved control, and, detect the change of air-conditioning load rapidly, rising, the decline of temperature in the corresponding shop, and idle call compressor 13 is moved control, so 2 temperature is stable rapidly in the shop.
Secondly, the action of air-conditioner refrigerator 1 is described.
In this air-conditioner refrigerator 1, air-conditioning system portion 6 is corresponding to be situated between and to be attached in the shop that the temperature sensor 129 of this remote controller 128 detects the deviation of 2 temperature (indoor temperature TA) by the design temperature of remote controller 128 indications with by dress, utilize outside controller 26 and indoor air-conditioner controller 28, carry out cooling operation or heating running, indoor temperature is adjusted to design temperature.In addition, cooling system portion 8 is under the control of outside cooling controller 32, indoor refrigeration controller 50 and the freezing controller 55 in indoor, the in-cabinet temperature of refrigerator 3 is adjusted to predefined refrigerated storage temperature, simultaneously, the in-cabinet temperature of reach in freezer 4 is adjusted to predefined cryogenic temperature.
Particularly, in this air-conditioner refrigerator, master controller 56 is by carrying out data communication with each controller 26,28,32,50,55, reception is according to the data of the running status at that time of air-conditioning system portion 6 and cooling system portion 8, and according to the data that receive, the decision aftermentioned is only operational mode constantly, will send in each controller 26,28,32,50,55 according to the data of this optimized operation pattern and the service data of each equipment.Then, each controller 26,28,32,50,55 is implemented control action described later according to the data that receive from master controller 56.
(1) refrigerating operaton of air-conditioning system portion
At first, when judging optimumization of refrigerating operaton of air-conditioning system portion 6, indoor air-conditioner controller 28 carries out refrigerating operaton, send predetermined data to outside air-conditioner controller 26 and master controller 56, simultaneously, the master controller 56 that receives after these data sends these data to the freezing controller 55 in outside cooling controller 32, indoor refrigeration controller 50 and indoor.
As shown in Figure 1, outside air-conditioner controller 26 is according to the data that receive, make 14 1 inlets of cross valve (with the connector of first separator 10) be communicated with an outlet (with the connector of heat source side heat exchanger 16), make another inlet (with the connector that utilizes side heat exchanger 27) be communicated with another outlet (with the connector of accumulator 23).In addition, expansion valve 17 is opened full operation compressor 13A, 13B.26 couples of compressor 13A of outside air-conditioner controller VFC and ability control of turning round.
When operation compressor 13A, 13B, enter the entrance side 16A of heat source side heat exchanger 16 via cross valve 14 from first separator 10 from the high temperature and high pressure gas refrigerant of compressor 13A, 13B discharge side discharge.By pressure fan 24 gas outside this heat source side heat exchanger 16 is carried, refrigerant is in this heat release, and condensation liquefaction.That is, at this moment, heat source side heat exchanger 16 has the effect of condenser.This liquid coolant is diverged by expansion valve 17 backs via heat source side heat exchanger 16.The part of fork arrives expansion valve 18, and at this, after throttling becomes low pressure (decompression), fork flows into and respectively utilizes in the side heat exchanger 27, in this evaporation.In utilizing side heat exchanger 27, this carries room air (air in the shop) by pressure fan 15, by the heat-absorbing action cooling room air of refrigerant evaporation.
Thus, carry out the refrigeration in indoor (in the shop).After outflow utilizes the Cryogenic air refrigerant of side heat exchanger 27 to converge,, supply to the suction side of compressor 13A, 13B, circulate so repeatedly successively via cross valve 14, check-valves 22, accumulator 23.
In addition, another part of the refrigerant by expansion valve 17 fork arrives expansion valve 19, and at this, throttling becomes (step-down) after the low pressure, flows in the coolant path 21A of fountain U type pipe in pipe 21, in this evaporation.By the heat-absorbing action chilling spray formula U type pipe in pipe 21 of the refrigerant evaporation in such idle call refrigerant loop 7, make it form low temperature.The cryogenic gas refrigerant that flows out fountain U type pipe in pipe 21 supplies to the suction side of compressor 13A, 13B via accumulator 23, circulates so repeatedly.
The control of 2 air themperature is to the pressure fan 15 that utilizes 27 air-supplies of side heat exchanger in the shop that indoor air-conditioner controller 28 detects according to temperature sensor 129, with the adjustment in indoor (in the shop) is predefined design temperature, the information of this indoor air-conditioner controller 28 is sent in the outside air-conditioner controller 26, and outside air-conditioner controller 26 is according to the operation of this information control compressor 13A, 13B.
Outside air-conditioner controller 26 is adjusted the valve opening of expansion valve 18,19 according to the temperature of the refrigerant temperature of be situated between refrigerant temperature that utilizes side heat exchanger 27 gateways that is detected by temperature sensor (not shown) or the temperature of utilizing side heat exchanger 27, fountain U type pipe in pipe 21 gateways or fountain U type pipe in pipe 21, to form the suitable degree of superheat.
On the other hand, outside cooling controller 32 will be for supplying to condenser 38 from the high temperature and high pressure gas refrigerant that compressor 37 is discharged, the cooling of cooling system portion 8 is communicated to an outlet (with the connector of condenser 38) with the inlet (with the connector of second separator 31) of the cross valve 39 in refrigerant loop 9, makes another inlet (with the connector of fountain U type pipe in pipe 21) be communicated to another outlet (with the connector of cross valve 41).
In addition, outside cooling controller 32 will be for will supply to by the gas coolant of condenser 38 in the fountain U type pipe in pipe 21, make an inlet (with the connector of cross valve 39) of cross valve 41 be communicated to an outlet (with refrigeration evaporimeter 43 and freezing connector), make another inlet (with the connector of storage tank 36) be communicated to another outlet (with the connector of fountain U type pipe in pipe 21) with evaporimeter 49 (magnetic valve 46,47,52).Then, operation compressor 37 and 54.
Thus, the high temperature and high pressure gas refrigerant of discharging from compressor 37 is undertaken after oil separates by second separator 31, in the entrance side 38A via cross valve 39 inflow condensers 38.Gas outside carrying in this condenser 38 by pressure fan 35 makes the refrigerant that flows into condenser 38 in this heat release, condensation.The refrigerant of discharging from this condenser 38 flows in the storage tank 36, and is temporarily resident at this, carries out gas/liquid and separates.Refrigerant after the separation is discharged from storage tank 36, behind cross valve 41, enters in the coolant path 21B of fountain U type pipe in pipe 21.The cooling that supplies to this fountain U type pipe in pipe 21 is with the refrigerant in refrigerant loop 9, and the fountain U type pipe in pipe 21 that utilizes as previously mentioned refrigerant evaporation by idle call refrigerant loop 7 to form low temperature cools off, and further supercooling.In addition, as previously mentioned, because at the rear of condenser 38 configuration store jar 36, so the heat loss can eliminate supercooling the time, the while can be carried out the adjustment of coolant quantity.
Diverging by cross valve 39,41 backs successively by this fountain U type pipe in pipe 21 overcooled refrigerants, a part is fork further, and another part is successively by magnetic valve 47,46, by after expansion valve 44 throttlings (step-down), supply to a refrigeration with evaporimeter 43, in this evaporation; Another part of fork arrives expansion valve 44 by magnetic valve 46, and (decompression), inflow another part refrigerate with in the evaporimeter 43 after this is by throttling, and in this evaporation.By pressure fan 20 air in the cabinet of refrigerator 3 is refrigerated with ventilating on the evaporimeter 43, circulating at each, air in each cabinet is cooled off by the heat-absorbing action of refrigerant evaporation.Thus, carry out the interior cooling of cabinet of refrigerator 3.Flow out after these refrigerations converge with the cryogenic gas refrigerant of evaporimeter 43 the 3rd separator 45 outlet sides of arrival compressor 54.
In addition, another part refrigerant that is diverged by 21 supercooling of fountain U type pipe in pipe passes through magnetic valve 52, arrives expansion valve 51, after this is by throttling (decompression), supplies to freezing usefulness evaporimeter 49, and in this evaporation.By pressure fan 25 that air in the cabinet of reach in freezer 4 is freezing with ventilating on the evaporimeter 49, circulating at this, by the heat-absorbing action of refrigerant evaporation air in the cabinet is cooled off.Thus, carry out cooling in the cabinet in the reach in freezer 4.
Flow out freezing cryogenic gas refrigerant and arrive compressor 54 via check-valves 30 with evaporimeter 49, be compressed at this, after boosting to the pressure (low-pressure side of refrigerating system) of refrigeration with evaporimeter 43 outlet sides, in compressor 54, discharge, undertaken by the 3rd separator 45 after oil separates, and converging from the refrigerant of refrigeration with evaporimeter 43.Refrigerant after this is converged sucks compressor 37 suction sides, circulates so repeatedly.
Refrigeration controller 50 in indoor is according to being situated between by the in-cabinet temperature of the detected refrigerator 3 of temperature sensor (not shown) or via refrigeration blowing out cold air temperature or refrigerating the cold air temperature with evaporimeter 43, refrigeration is controlled each expansion valve 44 respectively with the refrigerant temperature or the refrigeration of evaporimeter 43 outlet sides with the temperature of evaporimeter 43 valve opening with evaporimeter 43.Thus, make the interior cooling of cabinet of refrigerator 3 maintain above-mentioned refrigerated storage temperature, simultaneously, form the suitable degree of superheat (degree of superheat is certain).In addition, the freezing controller 55 in indoor according to the in-cabinet temperature of reach in freezer 4 or via freezing with evaporimeter 49 the discharge cold air temperature or enter the cold air temperature of refrigerating evaporator 49, freezing refrigerant temperature or the freezing temperature valve opening of controlling expansion valve 51 with evaporimeter 49 outlet sides with evaporimeter 49.Thus, make the interior cooling of cabinet of reach in freezer 4 keep above-mentioned cryogenic temperature, and form the suitable degree of superheat (degree of superheat is certain).
In addition, outside cooling controller 32 is when any one is opened in each expansion valve 44,51, according to the pressure of suction sides in the compressor 37 (cooling with the low pressure in refrigerant loop 9), the running frequency of control compressor 37, during each expansion valve 44,51 Close All, the operation of compressor 37 is stopped.
Thus, in refrigerating operaton, the low-pressure side refrigerant in idle call refrigerant loop 7 is fed into fountain U type pipe in pipe 21 owing to flow through, and the cooling of flowing through uses the high-pressure side refrigerant of refrigerating circuit 9 by supercooling, so can improve the cooling capacity and the operational efficiency of cooling system portion 8.
In addition, use the refrigerant of evaporimeter 43 low because of its evaporating temperature step-down event than flowing out to refrigerate with the freezing pressure of the refrigerant of evaporimeter 49 discharges of using in refrigerant loop 9 from cooling, but owing to before converging, compress by compressor 54 with the refrigerant that flows out with evaporimeter 43 from refrigeration, so even picture control refrigerator 3 is controlled under the situation of different in-cabinet temperatures with reach in freezer, also can suitable temperature will be cooled in each cabinet, simultaneously, utilize compressor 54 to make the pressure unanimity of the refrigerant that sucks compressor 37, fault-free ground moves.
(2) heating operation of air-conditioning system portion
Secondly, the heating operation of air-conditioning system portion is described with reference to Fig. 2.
At first, indoor air-conditioner controller 28 is judged when the heating operation of air-conditioning system portion 6 is optimumization, for carrying out heating operation, carry predetermined data to outside air-conditioner controller 26 and master controller 56, simultaneously, the master controller 56 that receives these data is delivered to outside cooling controller 32, indoor refrigeration controller 50 and the freezing controller 55 in indoor with these data.
Outside air-conditioner controller 26 is according to the data that receive, opposite during for the flow direction that makes refrigerant and refrigerating operaton, an inlet (with the connector of first separator 10) of cross valve 14 is communicated with an outlet (with the connector of accumulator 23), makes another inlet (with the connector that utilizes side heat exchanger 27) be communicated with another outlet (with the connector of heat source side heat exchanger 16).In addition, expansion valve 17 Close Alls, simultaneously, expansion valve 18 is all opened, and makes compressor 13A, 13B operation.When making compressor 13A, 13B when operation, the high temperature and high pressure gas refrigerant of discharging from the outlet of compressor 13A, 13B supplies to via cross valve 14 and utilizes side heat exchanger 27.
Carry room air by pressure fan 15 in this utilizes side heat exchanger 27, refrigerant is heated to interior air and condensation in this heat release.Thus, carry out the heating in indoor (in the shop).After the refrigerant that is utilized 27 liquefaction of side heat exchanger by this forms low pressure via expansion valve 18, expansion valve 19 successively (decompression), flow in the coolant path 21A of fountain U type pipe in pipe 21, after this is evaporated heat absorption, supply to the suction side of compressor 13A, 13B via accumulator 23, circulate so repeatedly.Outside air-conditioner controller 26 is adjusted the valve opening of expansion valve 18,19 according to the temperature of the refrigerant temperature of fountain U type pipe in pipe 21 gateways or fountain U type pipe in pipe 21, to form the suitable degree of superheat.
In addition, indoor air-conditioner controller 28 according to the temperature of utilizing side heat exchanger 27 or the air themperature control that is inhaled into it to the pressure fan 15 that utilizes 27 air-supplies of side heat exchanger, so that the adjustment in indoor (in the shop) becomes predefined design temperature.
On the other hand, outside cooling controller 32 makes the cooling of cooling system portion 8 use an inlet (with the connector of second separator 31) of the cross valve 39 in refrigerant loop 9 to be communicated with a side outlet (with the connector of cross valve 41), makes another inlet (with the connector of fountain U type pipe in pipe 21) be communicated with another outlet (with the connector of condenser 38).In addition, outside cooling controller 32 makes an inlet (with the connector of cross valve 39) of cross valve 41 be communicated with an outlet (with refrigeration evaporimeter 43 and freezing connector with evaporimeter 49 (magnetic valve 46,47,52)), makes another inlet (with the connector of storage tank 36) be communicated with another outlet (with the connector of fountain U type pipe in pipe 21).Then, operation compressor 37 and 54.
Thus, the high temperature and high pressure gas refrigerant of discharging from compressor 37 is fed into the coolant path 21B of fountain U type pipe in pipe 21 via cross valve 39,41.That is, the high temperature and high pressure gas refrigerant of discharging from compressor 37 supplies to leaf grating heat exchange 21 after via condenser 38 when refrigerating operaton, and supplies in the fountain U type pipe in pipe 21 before to condenser 38.As previously mentioned, the cooling that supplies in this fountain U type pipe in pipe 21 forms fountain U type pipe in pipe 21 coolings of low temperature and further supercooling with the evaporation of the refrigerant in refrigerant loop 9 refrigerant by utilizing idle call refrigerant loop 7.In other words, the refrigerant in idle call refrigerant loop 7 can draw from the heat of cooling with the refrigerant in refrigerant loop 9.
The refrigerant of coolant path 21B by fountain U type pipe in pipe 21 enters the entrance side 38A of condenser 38 via cross valve 39.Utilize pressure fan 35 on this condenser 38, carry outside gas, flow into refrigerant in the condenser 38 in this heat release, condensation.
The refrigerant of discharging from this condenser 38 enters in the storage tank 36, and is temporarily resident at this, separated by gas/liquid.Refrigerant after the separation is discharged in storage tank 36, is diverged by cross valve 41 backs, and a part further diverges, and another part by after expansion valve 44 throttlings (decompression), supplies to refrigeration evaporimeter 43 successively by magnetic valve 47,46, and in this evaporation; Another part of fork arrives expansion valve 44 by magnetic valve 46, after this throttling (decompression), flows into another refrigeration with evaporimeter 43, in this evaporation.Utilize pressure fan 20 that air in the cabinet of refrigerator 3 is used on the evaporimeter 43 in each refrigeration respectively and ventilate, circulate, utilize the heat-absorbing action of refrigerant evaporation to cool off air in each cabinet.
By above-mentioned operation, even when carrying out heating operation in idle call refrigerant loop 7, also the low-pressure side refrigerant in the idle call refrigerant loop 7 of flowing through can be supplied to fountain U type pipe in pipe 21, cool off the on high-tension side refrigerant supercooling of using refrigerant loop 9 by flowing through, can improve the refrigeration cooling capacity of evaporimeter 43,44 and the operational efficiency of cooling system portion 8 of refrigerator 3 or reach in freezer 4.
In addition, when heating operation, the refrigerant in idle call refrigerant loop 7 is owing to drawn from the heat of cooling with the refrigerant in refrigerant loop 9 by fountain U type pipe in pipe 21, so can improve the heating ability of air-conditioning system portion 6, generally speaking, can seek to carry out the efficient raising of room air adjusting and refrigerator 3 and interior air-conditioner refrigerator 1 integral body of cooling off of reach in freezer 4 cabinets, seek energy-conservationization.
Particularly, at this moment,,, can further improve the heating ability in idle call refrigerant loop 7 so can retrieve heat extraction effectively from this refrigerant because cooling is fed into fountain U type pipe in pipe 21 with refrigerant loop 9 on high-tension side refrigerants prior to condenser 38.
Operation control when (3) heat during air-conditioning system portion refrigerating operaton is closed.
In general air-conditioning (being equivalent to air-conditioning system portion 6), when refrigerating operaton, when indoor temperature is set to roughly the samely or close when middle for the design temperature heat of freezing when following with design temperature, the operation of compression unit (being equivalent to compression unit 13) is ended.Relative therewith, though at the air-conditioner refrigerator 1 of present embodiment in refrigeration heat is closed, during running refrigerating Account Dept 8, also can move the compression unit 13 of air-conditioning system portion 6, the supercooling of the refrigerant of the cooling system portion 8 that flows through.
Action during below explanation refrigeration heat is closed.
Fig. 5 and Fig. 6 are the flow charts of the action during expression refrigeration heat is closed.
At first, master controller 56 is judged the whether conducting (in service) (step S1) of compression unit (compressor 37,54) of cooling system portion 8 according to the data that receive from outside cooling controller 32, when compression unit closes (operation stop in), the valve fixed pulse Pv of expansion valve 19 is set at zero, valve opening is made as zero (contract fully), simultaneously, the speed Fr of the compression unit 13 of air-conditioning system portion 6 is set at zero, compression unit 13 is stopped (step S10).
On the other hand, when the compression unit operation of Account Dept 8 is used in cooling, master controller 56 judges whether cooling system portion 8 is in the defrosting (step S2), when for the defrosting in the time, move to the processing of above-mentioned steps S20, and under non-defrost state, judge according to the data of receiving by outside air-conditioner controller 26 whether compression unit B is (step S3) during pressure stops.At this, during so-called compression unit 13 is forced to stop, after compression unit 13 full cut-ofves end, for protection compression unit 13 keeps halted state at predefined pressure stopping period (for example 3 minutes) compression unit 13.
When compression unit 13 optional stopping, the indication of outside air-conditioner controller 26 by coming autonomous controller 56 is set at predefined initial stage pulse with the valve fixed pulse Pv of expansion valve 19, and the valve opening of expansion valve 19 is from state control the becoming initial opening (step S4) of contract fully.That is, in service at the compression unit of cooling system portion 8, when satisfying the condition of compression unit 13 optional halted states of non-defrost state and air-conditioning system portion 6 at the same time, expansion valve 19 is opened, and is controlled at initial opening regularly.
Then, outside air-conditioner controller 26 is set at predefined initial target frequency (step S5) with the target speed Fr of compression unit 13.In addition, in the present embodiment, the setting of the target speed Fr of compression unit 13 means the setting of the target speed of compressor 13A, and when this compressor of operation 13A, compressor 13B is controlled as predefined normal rotation with in the speed.
By the operation of this compression unit 13, refrigerant circulates in idle call refrigerant loop 7, utilizes the refrigerant of expansion valve 19 decompression to be fed into the coolant path 21A of fountain U type pipe in pipe 21.Thus, heat-absorbing action chilling spray formula U type pipe in pipe 21 that can be by this refrigerant evaporation can be with the cooling of the coolant path 21B of the fountain U type pipe in pipe 21 of the flowing through high-pressure side refrigerant supercooling with refrigerant loop 9.
Secondly; outside air-conditioner controller 26; set according to the temperature difference TE of the outlet temperature TE2 of the refrigerant of air-conditioning system portion 6 sides of fountain U type pipe in pipe 21 and inlet temperature TE1 and to be used for that this temperature difference TE is formed the SH control of the valve fixed pulse Pv corrected impulse Δ a of predefined target temperature difference SH (step 6) is according to discharge temperature (the discharge temperature TD1 of compressor 13A of the compression unit 13 of air-conditioning system portion 6; the discharge temperature TD2 of compressor 13B) is used to protect the TD control (step S7) of corrected impulse Δ b of the valve fixed pulse Pv of compression unit 13.In addition, this corrected impulse Δ b is that set point of temperature is set when above in the discharge temperature of compression unit 13.
In addition, outside air-conditioner controller 26 is according to the refrigerant inlet temperature TC1 of cooling system portion 8 sides of fountain U type pipe in pipe 21 and the temperature difference SC of outlet temperature TC2, this temperature difference SC is set at the predefined target temperature difference (the setting temperature difference) SC, and sets the SC control (step S8) that is used for outlet temperature TC2 is made as the correction speed Δ c of the compression unit 13 of outer temperature degree when above.At this, outlet refrigerant temperature TC2 be more than the outer temperature degree be because, in the refrigerant pipe (γ represents in by Fig. 1) that connects fountain U type pipe in pipe 21 and cross valve 39, usually owing to do not curl heat insulating member is not arranged, so when the refrigerant that passes through this refrigerant pipe is lower than outer temperature degree, refrigerant is heated, and produces flash gas (Off ラ Star シ ユ ガ ス), forms heat loss.But, when this refrigerant pipe γ go up to curl when heat insulating member is arranged, in step S8, only be set at the frequency of amendment Δ Fr that temperature difference SC is formed target temperature difference SC and get final product, can get rid of outlet refrigerant temperature TC2 is formed condition more than the outer temperature degree.
In addition, the outer temperature degree of described target temperature difference SC correspondence changes.For example, be value SC1 when establishing outer temperature degree and be more than 30 ℃, outer temperature degree is to be more than 20 ℃ that value SC2, outer temperature degree are is value SC3 below 20 ℃ the time below 30 ℃ the time.At this, the target temperature difference SC value of being set to SC1＜value SC2＜value SC3 is to be set at the low more big more value of outer temperature degree.Outside air-conditioner controller 26 is with existing valve fixed pulse Pv (Pv_old) and corrected impulse Δ a and the Δ b addition obtained by above-mentioned steps S6 and S7, secondly, calculate the value (step S9) of the valve fixed pulse Pv of next control, in the scope of the upper limit pulse (Pvmax) of expansion valve 19 and lower limit pulse (Pvmin), set the valve fixed pulse Pv of expansion valve 19, control valve aperture (step S10).
Secondly, outside air-conditioner controller 26 calculates next target speed Fr (step S11) of compression unit 13 with existing target speed Fr (Fr_old) and the correction frequency of amendment Δ c addition of being obtained by above-mentioned steps S8.In the scope of upper limiting frequency (Frmax) and lower frequency limit (Frmin), then the rotation number of compression unit 13 is controlled as this target speed Fr (step S12) as the target speed Fr that calculates.
At this, the scope of this upper limiting frequency (Frmax) and lower frequency limit (Frmin) is set to the higher limit and the lower limit of high (efficient that setting the is above) frequency range of compression unit 13 (compressor 13A) efficient.Thus, compression unit 13 can be controlled to be high efficiency speed.
But, even, when the supercooling of the refrigerant of air-conditioning system portion 6 is still excessive, stops the operation of compression unit 13, and stop the operation of air-conditioning system portion 6 when the speed of compression unit 13 is reduced to lower frequency limit.Specifically, after the processing of step S12, outside air-conditioner controller 26 judge target speed Fr whether with the roughly consistent (step 13) of lower frequency limit, be judged as when inconsistent, move to the processing of step S1, on the other hand, when target speed Fr is roughly consistent with lower frequency limit, outside air-conditioner controller 26 judges that whether the temperature difference SC of refrigerant gateway of the air-conditioning system portion 6 of fountain U type pipe in pipe 21 is above temperature (step S14) height of set point of temperature (for example 10 ℃) of target temperature difference SC, if this more than temperature, then moves to the processing of step S15.
Thus, stop the operation of compression unit 13, simultaneously, the valve opening of expansion valve 19 is made as zero, the operation of air-conditioning system portion 6 is stopped.In addition, even rise to upper limiting frequency when the speed that makes compression unit 13, when the refrigerant of air-conditioning system portion 6 does not obtain supercooling yet, limit the operation that makes compression unit 13 in the frequency to continue thereon.Air-conditioner controller 26 controls in outside all move to the processing of step S1 after above-mentioned any processing finishes, carry out the processing of step S1～S13 or the processing of step S1～S15 repeatedly in refrigeration heat is closed.Thus, the control of the valve opening of the rotation control of enforcement compression unit 13 and expansion valve 19 in refrigeration heat is closed.
Above-mentioned action is not limit in refrigeration during heat closes, and can implement at the state that the operation of air conditioner according to the state that stops to indicate the operation that stops air-conditioning system portion 6 of remote control etc., after being refrigerating operaton behind the refrigerating operaton stops yet.
Like this, in this air-conditioner refrigerator 1, when the compression unit 13 of air-conditioning system portion 6 stops, compression unit (compressor 37,54) in cooling system portion 8 is in service, owing to make compression unit 13 operations of air-conditioning system portion 6, the low-pressure side refrigerant in the idle call refrigerant loop 7 of flowing through is supplied to fountain U type pipe in pipe 21, so even in refrigeration heat is closed, also can be with the high-pressure side refrigerant supercooling often of cooling of flowing through with refrigerant loop 9.Its result can avoid the phenomenons such as cooling effectiveness reduction of cooling system portion 8 in refrigeration heat is closed, and the cooling capacity and the operational efficiency of cooling system portion 8 maintained high state.
Particularly, in refrigeration heat is closed, because the compression unit 13 of air-conditioning system portion 6 is controlled in the high speed scope of efficient, so can further improve energy utilization efficiency.In addition, be set at the low more big more value of outer temperature degree by target temperature difference SC, can corresponding outer temperature degree adjust the supercooling degree of the refrigerant of cooling system portion 8 suitably the temperature difference SC of the refrigerant inlet temperature TC1 of cooling system portion 8 sides of fountain U type pipe in pipe 21 and outlet temperature TC2.In addition, in the above-described embodiments, expansion valve 19 also can use various motor-driven valves in the scope of the supply of changeable refrigerant/stop.
In the operation of (1)～(3) control, particularly close in the state of grade, owing to the compression unit 13 with air-conditioning system portion 6 is controlled in the high speed scope of efficient, so can further improve the utilization ratio of energy in refrigeration heat.Therefore, 2 indoor temperature is stable rapidly in the shop, on this basis, promotes that the heat exchange of fountain U type pipe in pipe 21 is important.By such control, can be not cost to sacrifice air conditioning, improve energy utilization efficiency as entire system.
In the present embodiment, with reference to Fig. 3, because near the position (gateway 60) of the change maximum of 2 air-conditioning load is provided with remote controller 128 in the shop, and air-conditioning control temperature sensor 129 is set in this remote controller 128, so as shown in Figure 4, when beginning to carry out remotely monitored sensing control (S21), when people's discrepancy causes the change of air-conditioning load (S22), its variation is promptly detected (S23), promptly cooperates the rising of shop temperature, decline to control air-conditioning side compressor 13 (S24).Or if be provided with glass near 2 the gateway 60 in the shop, then be subjected to direct sunlight etc. easily, it means it also is that the air-conditioning load becomes big position (S25), therefore, cooperates the rising of 2 temperature in the shop, the operation control (S26) that descends and carry out idle call compressor 13 this moment.
In said structure, in any case, can make in the shop 2 temperature promptly stable (S27), promptly stable by making it, can suppress to be used for the coolant quantity of air conditioning rapidly.Therefore, can carry out the valve opening of the expansion valve 18 of Fig. 1 is carried out the control of throttling, also can corresponding its shape with expansion valve 18 Close Alls.Like this, can increase the cold medium flux of the air-conditioning system portion low-pressure side of fountain U type pipe in pipe 21, when it increases, heat exchange between the on high-tension side refrigerant of refrigerant and refrigeration system portion of promotion air-conditioning system portion low-pressure side, and make the load of refrigeration side stablize (S28) rapidly, make its stable (29).Usually, because when the energy utilization efficiency with the energy utilization efficiency of air-conditioning system portion and refrigeration system portion compares, the energy utilization efficiency of air-conditioning system portion is good, so during the heat exchange in promoting fountain U type pipe in pipe 21 more, can improve energy utilization efficiency (S30) as native system integral body.
In the present embodiment, 2 temperature is promptly stablized on this point in making the shop, owing to promote the heat exchange of fountain U type pipe in pipe 21 more, so can be not cost to sacrifice air conditioning, improves the energy utilization efficiency as entire system.
More than, one embodiment of the invention have been described, but have the invention is not restricted to this.For example, narrated in the above-described embodiments and used situation of the present invention in the air-conditioner refrigerator in being applicable to shop such as convenience store, can in the air-conditioner refrigerator of the cooling of the equipment that is cooled beyond carrying out air conditioning and refrigerator 3 or reach in freezer 4, be extensive use of.In addition, the matched tube structure that the foregoing description is represented etc. also is not limited to this, can suitably change without departing from the spirit and scope of the present invention.
Claims (6)
1. an air-conditioner refrigerator is characterized in that, comprising: air-conditioning system portion, and it has compressor of air conditioner, heat source side heat exchanger and utilizes the side heat exchanger, and utilizes the side heat exchanger to carry out an indoor air conditioning by this; Refrigeration system portion, it comprises cooling with compressor, condenser and evaporimeter, and is configured in the cabinet of described one indoor cooling bunkerage by this evaporimeter and cools off; Fountain U type pipe in pipe, it is used for the heat exchange between the on high-tension side refrigerant of refrigerant and described refrigeration system portion of described air-conditioning system portion low-pressure side, simultaneously, described one indoor air-conditioning load big or the big position of this air-conditioning load variations have air-conditioning control temperature sensor, and, also comprise control device, it is according to the detected value of this temperature sensor, when described air-conditioning system portion reaches refrigeration heat and closes, make described idle call compressor continue operation, its control flows into the cold medium flux of the described air-conditioning system portion low-pressure side of described fountain U type pipe in pipe.
2. air-conditioner refrigerator as claimed in claim 1 is characterized in that, when operation idle call compressor in refrigeration heat is closed, its speed is configured in the predefined frequency range.
3. air-conditioner refrigerator as claimed in claim 2, it is characterized in that, in described air-conditioning system portion, obtain the target speed that is used for the described cooling in the described fountain U type pipe in pipe of inflow is formed with the temperature difference of on high-tension side refrigerant inlet temperature in refrigerant loop and outlet temperature the described idle call compressor of the predefined setting temperature difference, when this target speed is in predefined frequency range, the speed of described idle call compressor is controlled to be its target speed, on the other hand, when speed roughly consistent with described predefined lower-frequency limit frequency, simultaneously the described temperature difference is that the set point of temperature of the described setting temperature difference is when above, and speed is roughly consistent with described predefined upper frequency limit frequency, simultaneously the described temperature difference is the described temperature of described setting temperature difference when following, the operation termination of described idle call compressor.
4. as any described air-conditioner refrigerator of claim 1～3, it is characterized in that, described one indoor be convenience store, near this gateway, shop, have described temperature sensor.
5. as any described air-conditioner refrigerator of claim 1～3, it is characterized in that, described one indoor be convenience store, near the windowpane in this shop, have temperature sensor.
6. as any described air-conditioner refrigerator of claim 1～3, it is characterized in that described temperature sensor is set on the remote controller operating means of air conditioner.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP053668/2004 | 2004-02-27 | ||
| JP2004053668A JP4346473B2 (en) | 2004-02-27 | 2004-02-27 | Air-conditioning refrigeration equipment |
| JP053668/04 | 2004-02-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1661302A CN1661302A (en) | 2005-08-31 |
| CN1661302B true CN1661302B (en) | 2010-05-26 |
Family
ID=35010764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410095054 Expired - Fee Related CN1661302B (en) | 2004-02-27 | 2004-11-23 | Air conditioner freezer |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4346473B2 (en) |
| CN (1) | CN1661302B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007060108A (en) | 2005-08-23 | 2007-03-08 | Fujitsu Media Device Kk | Surface acoustic wave device |
| JP4624223B2 (en) * | 2005-09-20 | 2011-02-02 | 三洋電機株式会社 | Refrigeration system |
| JP5033337B2 (en) * | 2006-03-07 | 2012-09-26 | 三洋電機株式会社 | Refrigeration system and control method thereof |
| JP4804396B2 (en) * | 2007-03-29 | 2011-11-02 | 三菱電機株式会社 | Refrigeration air conditioner |
| JP2009123594A (en) * | 2007-11-16 | 2009-06-04 | Espec Corp | Fuel cell evaluation testing device |
| JP5017296B2 (en) * | 2009-03-03 | 2012-09-05 | 株式会社東芝 | Electronics |
| FR2986309B1 (en) * | 2012-01-26 | 2018-05-25 | Arkema France | CASCADE REFRIGERATION SYSTEM |
| JP6053201B2 (en) * | 2013-02-06 | 2016-12-27 | ダイキン工業株式会社 | Refrigeration equipment |
| JP6228025B2 (en) * | 2014-02-04 | 2017-11-08 | パナソニック株式会社 | Cooling system |
| CN106415163B (en) * | 2014-07-03 | 2019-04-09 | 三菱电机株式会社 | Refrigerator |
-
2004
- 2004-02-27 JP JP2004053668A patent/JP4346473B2/en not_active Expired - Fee Related
- 2004-11-23 CN CN 200410095054 patent/CN1661302B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005241195A (en) | 2005-09-08 |
| JP4346473B2 (en) | 2009-10-21 |
| CN1661302A (en) | 2005-08-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6393858B1 (en) | Refrigeration system | |
| EP2976225B1 (en) | Capacity modulation of transport refrigeration system | |
| US10330369B2 (en) | Control system for a refrigerated merchandiser | |
| EP2699853B1 (en) | Transcritical refrigerant vapor system with capacity boost | |
| EP2663817B1 (en) | Refrigeration system and method for operating a refrigeration system | |
| CN100520228C (en) | Freezing system | |
| CN1661302B (en) | Air conditioner freezer | |
| JP4497915B2 (en) | Cooling system | |
| CN101907371B (en) | Air-condition freezing and refrigeration system device | |
| CN201724461U (en) | Refrigeration and cold storage system device for air conditioner | |
| CN100408942C (en) | Air-conditioner refrigerator and control method therefor | |
| CN100526767C (en) | Refrigeration system | |
| JP5627523B2 (en) | Air conditioner | |
| CN100408946C (en) | Refrigerating system | |
| CN100427855C (en) | Refrigerating system and its controlling method | |
| CN100408943C (en) | Supercharger unit | |
| JP2007100986A (en) | Refrigerating system | |
| CN100408938C (en) | Outdoor unit of air-conditioner refrigerator | |
| JP2005249242A (en) | Air conditioning and refrigerating device | |
| JP2005106365A (en) | Refrigeration system | |
| JP2005076963A (en) | Refrigeration system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100526 Termination date: 20151123 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |