CN100523657C - Freezing air-conditioning apparatus - Google Patents
Freezing air-conditioning apparatus Download PDFInfo
- Publication number
- CN100523657C CN100523657C CNB200510087926XA CN200510087926A CN100523657C CN 100523657 C CN100523657 C CN 100523657C CN B200510087926X A CNB200510087926X A CN B200510087926XA CN 200510087926 A CN200510087926 A CN 200510087926A CN 100523657 C CN100523657 C CN 100523657C
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- air
- freezing
- heat
- idle call
- transfer pipe
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 94
- 238000007710 freezing Methods 0.000 title claims description 155
- 230000008014 freezing Effects 0.000 title claims description 155
- 239000003507 refrigerant Substances 0.000 claims abstract description 127
- 238000001816 cooling Methods 0.000 claims abstract description 25
- 238000001704 evaporation Methods 0.000 claims description 17
- 238000011144 upstream manufacturing Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 abstract description 10
- 238000009833 condensation Methods 0.000 abstract description 10
- 238000005057 refrigeration Methods 0.000 abstract description 9
- 238000007664 blowing Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000003750 conditioning effect Effects 0.000 description 10
- 239000007788 liquid Substances 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 3
- 230000006837 decompression Effects 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 230000003584 silencer Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000004781 supercooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Classifications
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
In the refrigerating air conditioner 100, a refrigerating cycle for air conditioning is structured with the refrigerating circuit 101 having a heat transfer pipe which is used as a condenser at the time of cooling operation and as an evaporator at the time of heating operation, a refrigerating cycle for refrigeration is structured with the refrigerating circuit 102 for refrigeration and a refrigeration air conditioning heat exchanger 3 is structured by integrally forming a heat transfer pipe for air conditioning and a heat transfer pipe for refrigeration via a heat transfer fin. The refrigerating air conditioner 100 has an air blower 40 for blowing air to the refrigeration air conditioning heat exchanger 3 and a controller 200 for controlling rotation number of the air blower based on larger condensation pressure of either the refrigerant circuit 101 for air conditioning or the refrigerant circuit 102 for refrigerant for refrigeration, at the time that the heat transfer pipe for air conditioning is used for cooling operation as a condenser.
Description
Technical field
The present invention relates to a kind of refrigerating air-conditioning that carries out air-conditioning and freezing two aspects, be particularly suitable for aircondition and refrigerating plant and have the independently refrigerating air-conditioning of refrigerant loop respectively.
Background technology
As the refrigerating air-conditioning in the past that carries out air-conditioning and freezing two aspects, there is the spy to open the example of being announced in 2002-No. 277097 communiques (patent documentation 1).In the refrigerating air-conditioning of this patent documentation 1, the heat-transfer pipe of outdoor heat converter is used single cold-producing medium by air-conditioning and freezing shared.
In addition, as refrigerating air-conditioning in the past, there is the spy to open the example of being announced in 2001-No. 289532 communiques (patent documentation 2).The refrigerating air-conditioning of the embodiment 9 of this patent documentation 2 constitutes the idle call freeze cycle with the idle call refrigerant loop with the idle call heat-transfer pipe that becomes condenser and become evaporimeter when cooling operation when system warms up running, constitute the freezing freeze cycle of using with having freezing the freezing of heat-transfer pipe of using that always becomes condenser with refrigerant loop, with described idle call heat-transfer pipe with describedly freezingly be integrally formed by heat transfer sheet and constitute the refrigerating and air conditioning heat exchanger, possesses the air blast that ventilates to described refrigerating and air conditioning heat exchanger with heat-transfer pipe.
[patent documentation 1] spy opens communique 2002-No. 277097
[patent documentation 2] spy opens communique 2001-No. 289532
But, in the refrigerating air-conditioning of described patent documentation 1, the heat-transfer pipe of outdoor heat converter is by air-conditioning and freezing shared, use single cold-producing medium, since air-conditioning with freezing in evaporating temperature based on use different, the freeze cycle that therefore just need carry out mating with the evaporating temperature of any one party (being generally a lower side) turns round.Thus, be difficult to carry out and air-conditioning, the corresponding freeze cycle running of freezing both sides.
In addition, in the freezing cycle device of this patent documentation 1, because when the warm running of system of air-conditioning side, the outdoor heat converter of air-conditioning side becomes evaporimeter, the outdoor heat converter of freezing side becomes condenser, therefore for the thermal discharge of obtaining the cold-producing medium in the freeze cycle and the balance of caloric receptivity, just the pattern that need switch to any one party of evaporimeter or condenser according to big young pathbreaker's outdoor heat converter of warm ability of air-conditioning system and freezing cooling capacity is used.But, in convenience store as the typical example that uses this kind device, be connected with 2 to 3 air-conditioning side indoor sets, showcase as freezing side cooler then is connected 5 to 7, switch thereby produce the miscellaneous pattern be accompanied by these the operation of a machine switches, and produce problem on incomplete and so on the reliability of the switching of the energy loss that is accompanied by change action or cross valve.
On the other hand, in the refrigerating air-conditioning of described patent documentation 2, about the control of the air blast that ventilates to the refrigerating and air conditioning heat exchanger without any announcement.In the refrigerating air-conditioning of this patent documentation 2, for example the ventilation at the air blast that ventilates to oil-to-air heat exchanger is made as under certain situation, will produce following problem.That is, be used as condenser when carrying out cooling operation at the idle call heat-transfer pipe and since freezing with heat-transfer pipe also as the condenser action, so all the playing a role of freezing air conditioner heat exchanger as condenser.Idle call refrigerant loop and freezing a certain side's with refrigerant loop condensing pressure is risen terrifically, produce the problem of the running that is difficult to be suitable for two refrigerant loops.In addition, when the idle call heat-transfer pipe is used as the warm running of evaporimeter system, owing to freezingly move as condenser, so can produce the problem of the running that is difficult to be suitable for two refrigerant loops with heat-transfer pipe.
So, though consider the idle call heat exchanger and freezingly fully be made as independent parts, each heat exchanger is provided with the method for air blast independently with heat-transfer pipe, under this situation, will the whole problem that maximizes of generation device.
Summary of the invention
The objective of the invention is to, obtain when will installing integral miniaturization, can be suitable for idle call refrigerant loop and the freezing refrigerating air-conditioning of using the running of refrigerant loop.
In order to reach described purpose, the present invention constitutes the idle call freeze cycle with the idle call refrigerant loop with the idle call heat-transfer pipe that becomes condenser and become evaporimeter when cooling operation when system warms up running, constitute the freezing freeze cycle of using with having freezing the freezing of heat-transfer pipe of using that becomes condenser with refrigerant loop, with described idle call heat-transfer pipe with describedly freezingly be integrally formed by heat transfer sheet with heat-transfer pipe and constitute the refrigerating and air conditioning heat exchanger, the refrigerating air-conditioning that possesses the air blast that ventilates to described refrigerating and air conditioning heat exchanger, possess: be used as condenser when carrying out cooling operation at described idle call heat-transfer pipe, based on described idle call refrigerant loop and the described freezing condensing pressure of using any one higher side of refrigerant loop, control the control device of the rotating speed of described air blast.
More preferred concrete configuration example of the present invention is as follows.
(1) described control device is under different types of situation at the cold-producing medium that is used for described idle call refrigerant loop with being used for described freezing cold-producing medium with refrigerant loop, be used as condenser when carrying out cooling operation at described idle call heat-transfer pipe, the condensing pressure of described idle call refrigerant loop and described freezing any one higher side with refrigerant loop is carried out converting based on the correction of the rerum natura of low side's cold-producing medium, relatively this has carried out revising the condensing pressure of the condensing pressure that converts and other refrigerant loop, controls the rotating speed of described air blast based on the condensing pressure of any one higher side.
(2) described control device based on the evaporating pressure of described idle call refrigerant loop, is controlled the rotating speed of described air blast when described idle call heat-transfer pipe is used as the warm running of evaporimeter system.
(3) except described (2), also possess and when described idle call heat-transfer pipe is used as the warm running of evaporimeter system, adjust the described freezing condensing pressure adjusting device of using the condensing pressure of refrigerant loop.
(4) except described (3), described condensing pressure adjusting device is adjusted valve by condensing pressure and is constituted, described condensing pressure adjustment valve is located at described freezing with on the refrigerant loop, carries out the throttling action according to the mode that described freezing condensing pressure with refrigerant loop is reached more than the setting pressure when described idle call heat-transfer pipe is used as the warm running of evaporimeter system.
(5) except from described (2) to (4) any one, described refrigerating and air conditioning heat exchanger is by according to respect to the flow direction because of the driving leaked-in air of described air blast, the mode that makes heat-transfer pipe constitute a plurality of row disposes, and belongs to the mobile position that be positioned at the row that become upstream side of freezing heat-transfer pipe with refrigerant loop with respect to air.
In addition, in order to reach described purpose, the present invention constitutes the idle call freeze cycle with the idle call refrigerant loop with the idle call heat-transfer pipe that becomes condenser and become evaporimeter when cooling operation when system warms up running, constitute the freezing freeze cycle of using with having freezing the freezing of heat-transfer pipe of using that becomes condenser with refrigerant loop, with described idle call heat-transfer pipe with describedly freezingly be integrally formed by heat transfer sheet with heat-transfer pipe and constitute the refrigerating and air conditioning heat exchanger, the refrigerating air-conditioning that possesses the air blast that ventilates to described refrigerating and air conditioning heat exchanger, possess: when described idle call heat-transfer pipe is used as the warm running of evaporimeter system, based on the evaporating pressure of described idle call refrigerant loop, control the control device of the rotating speed of described air blast.
More preferred concrete configuration example of the present invention is as follows.
(1) possesses the condensing pressure adjusting device of when described idle call heat-transfer pipe is used as the warm running of evaporimeter system, adjusting the condensing pressure of described freezing usefulness refrigerant loop.
(2) described refrigerating and air conditioning heat exchanger quilt is according to the flow direction with respect to the leaked-in air by the driving of described air blast, the mode that makes heat-transfer pipe constitute a plurality of row disposes, and belongs to the mobile position that be positioned at the row that become upstream side of freezing heat-transfer pipe with refrigerant loop with respect to air.
According to the present invention, owing to idle call heat-transfer pipe and freezing being integrally formed by heat transfer sheet with heat-transfer pipe are constituted the refrigerating and air conditioning heat exchanger, and possess at the idle call heat-transfer pipe and be used as condenser when carrying out cooling operation, based on idle call refrigerant loop and the freezing condensing pressure of using any one higher side of refrigerant loop, the control device of the rotating speed of control air blast, therefore just can obtain when will installing integral miniaturization, can be suitable for idle call refrigerant loop and the freezing refrigerating air-conditioning of using the running of refrigerant loop.
In addition, according to preferred concrete formation of the present invention, described control device is under different types of situation at the cold-producing medium that is used for described idle call refrigerant loop with being used for described freezing cold-producing medium with refrigerant loop, be used as condenser when carrying out cooling operation at described idle call heat-transfer pipe, to being used in described freezing freezing condensing pressure with cold-producing medium with refrigerant loop, physics value based on the idle call cold-producing medium that is used in described idle call refrigerant loop is revised conversion, relatively this has carried out revising condensing pressure that converts and the condensing pressure that is used in the idle call cold-producing medium of idle call refrigerant loop, control the rotating speed of described air blast based on the condensing pressure of any one higher side, therefore just can use to be suitable for idle call refrigerant loop and freezing cold-producing medium respectively, be suitable for idle call refrigerant loop and freezing running with refrigerant loop with refrigerant loop.
In addition, according to preferred concrete formation of the present invention, because when described control device is used as the warm running of evaporimeter system at described idle call heat-transfer pipe, evaporating pressure based on described idle call refrigerant loop, control the rotating speed of described air blast, therefore just can the reduction according to ambient temperature increase rotating speed, warm up load greater than guaranteeing that essential air-conditioning system warms up ability the winter of chilled load in system for the reduction that suppresses the warm evaporating temperature of air-conditioning system.
In addition, according to preferred concrete formation of the present invention, owing to possess and when described idle call heat-transfer pipe is used as the warm running of evaporimeter system, adjust the described freezing condensing pressure adjusting device of using the condensing pressure of refrigerant loop, therefore just can be in the warm load of system greater than guaranteeing that essential air-conditioning system warms up ability the winter of chilled load, can avoid simultaneously because air quantity makes freezing condensing pressure reduction greater than the essential air quantity of freezing side, pressure ratio was compared low and was caused the situation of obstacle for the differential pressure oil supply of compressor inside with setting, thereby can guarantee to be difficult to be subjected to the running of stable freezing side of the influence of air-conditioning crosswind amount.
In addition, according to preferred concrete formation of the present invention, because described refrigerating and air conditioning heat exchanger arrangement becomes to make heat-transfer pipe constitute a plurality of row on the flow direction of the leaked-in air by the driving of described air blast, wherein, the row that belong to freezing heat-transfer pipe with refrigerant loop are positioned at the upstream side of air-flow direction, therefore belong to the intake air temperature that a freezing part with the condensation heat in the heat-transfer pipe of refrigerant loop will improve idle call heat exchanger part, this temperature ascending amount causes making the raising of warm ability as playing a role to the caloric receptivity as the idle call heat-transfer pipe of evaporimeter when the warm running of the system of air-conditioning.In addition, owing to compare during with common running, the frosting degree of idle call heat exchanger reduces, and therefore can expect to improve the effect of the reduction of the warm ability of air-conditioning system.
In addition, according to the present invention, owing to idle call heat-transfer pipe and freezing being integrally formed by heat transfer sheet with heat-transfer pipe are constituted the refrigerating and air conditioning heat exchanger, and possess when described idle call heat-transfer pipe is used as the warm running of evaporimeter system, evaporating pressure based on described idle call refrigerant loop, control the control device of the rotating speed of described air blast, therefore just can obtain when will installing integral miniaturization, can be suitable for idle call refrigerant loop and the freezing refrigerating air-conditioning of using the running of refrigerant loop.
Description of drawings
Fig. 1 is the pie graph of the refrigerating air-conditioning of one embodiment of the present of invention.
Fig. 2 is the schematic diagram of form of via arrangement of heat-transfer pipe of the refrigerating and air conditioning heat exchanger of presentation graphs 1.
Action flow chart when Fig. 3 is the idle call cold-producing medium of refrigerating air-conditioning of Fig. 1 and freezing cooling operation when being identical type with cold-producing medium.
Action flow chart when Fig. 4 is the idle call cold-producing medium of refrigerating air-conditioning of Fig. 1 and freezing cooling operation when being variety classes with cold-producing medium.
Wherein, 1 ... the idle call compressor, 2 ... the idle call compressor, 3 ... the freezing air conditioner heat exchanger, 3a ... the idle call heat-transfer pipe, 3b ... the freezing heat-transfer pipe of using, 3c ... heat transfer sheet, 4 ... accumulator, 5 ... separator, 6 ... actuator, 7 ... silencer, 8 ... the idle call aftercooler, 9 ... non-return valve, 10 ... non-return valve, 11 ... return oil return line, 12 ... cross valve, 13 ... outdoor expansion valve, 14 ... stop valve, 15 ... stop valve, 16 ... the idle call pressure sensor, 17 ... the idle call pressure sensor, 21 ... the freezing compressor of using, 22 ... non-return valve, 23 ... condensing pressure is adjusted valve (condensing pressure adjusting device), 24 ... accumulator, 25 ... the freezing reheater of using, 26 ... actuator (actuator), 27 ... stop valve, 28 ... drier, 29 ... inspection window, 30 ... stop valve, 31 ... liquid collateral branch loop, 32 ... the freezing pressure sensor of using, 33 ... the freezing pressure sensor of using, 40 ... air blast, 51 ... the room conditioning heat exchanger, 52 ... the room conditioning expansion valve, 53 ... the room conditioning air blast, 61 ... the indoor freezing heat exchanger of using, 62 ... the indoor freezing expansion valve of using, 63 ... the indoor freezing air blast of using, 100 ... refrigerating air-conditioning, 101 ... the idle call refrigerant loop, 102 ... the freezing refrigerant loop of using, 110 ... outdoor assembly, 120 ... the idle call indoor assembly, 130 ... the freezing indoor assembly of using, 140 ... building, 200 ... controller (control device)
The specific embodiment
To use Fig. 1 the refrigerating air-conditioning of one embodiment of the present of invention to be described below to Fig. 4.
At first, in reference Fig. 1 and Fig. 2, the formation of the refrigerating air-conditioning of present embodiment is described.Fig. 1 is the pie graph of the refrigerating air-conditioning of one embodiment of the present of invention, and Fig. 2 is the schematic diagram of form of via arrangement of heat-transfer pipe of the refrigerating and air conditioning heat exchanger of presentation graphs 1.
It is freezing with indoor assembly 130 that refrigerating air-conditioning 100 possesses 1 outdoor assembly 110, Duo Tai (in the illustrative example being 2) idle call indoor assembly 120 and Duo Tai (in the illustrative example being 5).Quilt is by connections such as refrigerant piping, electric distribution and signal wirings between these inscapes 110,120,130.Outdoor assembly 110 is located at the outside (outdoor) of building 140, idle call indoor assembly 120 and the freezing inside (indoor) of being located at building 140 with indoor assembly 130.Freezingly constitute by refrigerator display case or refrigerated display case etc. with indoor assembly 130.
In addition, refrigerating air-conditioning 100 possesses idle call refrigerant loop 101, freezing with refrigerant loop 102 and controller 200.Controller 200 is made of micro computer etc., is the control device of control idle call refrigerant loop 101 and freezing inscape with refrigerant loop 102, air blast 40,53,63 etc.
Air-conditioning side refrigerant loop 101 possesses idle call compressor 1,2, cross valve 12, freezing air conditioner heat exchanger 3, accumulator 4, actuator (actuator) 6, outdoor expansion valve 13 as the critical piece of outside in outdoor assembly 110, possess room conditioning with heat exchanger 51, indoor expansion valve 52 in idle call indoor assembly 120 as the critical piece of indoor.
And, in idle call indoor assembly 120, dispose room conditioning air blast 53, by rotating this room conditioning air blast 53, room air be inhaled in the idle call indoor assembly 120 and by with room conditioning with heat exchanger 51 heat exchange forcibly (being heated or cooled), carry out indoor system from idle call indoor assembly 120 to indoor blowing out warm or freeze.
On the other hand, freezing side refrigerant loop 102 possesses in outdoor assembly 110 as the critical piece of outside freezingly adjusts valve 23 with compressor 21, freezing air conditioner heat exchanger 3, accumulator 24, actuator 26, condensing pressure, possesses indoor freezing usefulness heat exchanger 61 and indoor expansion valve 62 freezing in indoor assembly 130 as the critical piece of indoor.Idle call refrigerant loop 101 and freezingly formed fully independently with refrigerant loop 102.
And, freezing dispose in indoor assembly 130 indoor freezing with air blast 63, should be indoor freezing by rotation with air blast 63, freezingly be recycled and freezingly cooled off with heat exchanger 61 by indoor with the air storehouse of indoor assembly 130 in, carry out freezing using in the storehouse of indoor assembly 130 and cool off.
Freezing air conditioner heat exchanger 3 possesses freezing with heat-transfer pipe 3b, by across the heat transfer sheet 3c that is provided with heat exchanger of the idle call heat-transfer pipe 3a of the outside idle call heat exchanger of idle call refrigerant loop 101, freezing outside cold-producing medium with refrigerant loop 102 as shown in Figure 2 between them.That is, freezing air conditioner heat exchanger 3 is by with idle call heat-transfer pipe 3a with freezingly constitute by the fin pipeline type heat exchanger that heat transfer sheet 3c is integrally formed with heat-transfer pipe 3b.
Possesses 1 air blast 40 that is used for to these freezing air conditioner heat exchanger 3 conveying chamber outer air.In addition, in freezing air conditioner heat exchanger 3, freezing heat-transfer pipe 3b with path all is configured in the upstream side of the air stream that is produced by air blast 40, and the part of the heat-transfer pipe 3a of idle call path is configured in the upstream side that air flows in the same manner with freezing heat-transfer pipe 3b with path, and remaining heat-transfer pipe 3a is configured in the downstream side of air stream.
Below, in reference Fig. 1, Fig. 3 and Fig. 4, the action during to the cooling operation of refrigerating air-conditioning 100 describes.
When the cooling operation of refrigerating air-conditioning 100 was begun, in idle call refrigerant loop 101, cold-producing medium will flow shown in the solid arrow of Fig. 1.The idle call high temperature refrigerant of ejection is collaborated in separator 5 through silencer (silencer) 7, non-return valve 9 from idle call compressor 1,2.In this separator 5, ejection in the cold-producing medium contained refrigerator oil separated, pass and return oil return line 11 and get back in the pipe arrangement of suction side.On the other hand, the high temperature refrigerant of separated refrigerator oil utilizes cross valve 12 in separator 5, and the solid line direction of flow graph 1 when refrigeration flows into the heat-transfer pipe 3a of the idle call path of freezing air conditioner heat exchanger 3.
This high temperature refrigerant is in freezing air conditioner heat exchanger 3, to the outdoor air heat release of being sent here by air blast 40 and condensation.Chilled liquid refrigerant is through non-return valve 10 and after temporarily being concentrated in the accumulator 4, flow into the idle call aftercooler part 8 of freezing air conditioner heat exchanger 3, utilization here by supercooling, is sent to idle call indoor assembly 120 through stoping valve 14 with the heat exchange of outdoor air.
, after being reduced pressure, in room conditioning usefulness heat exchanger 51,, evaporate from the liquid refrigerant that stops valve 14, room air is cooled off by from room air, absorbing heat with the room air heat exchange by room conditioning usefulness expansion valve 52.Evaporation and the idle call cold-producing medium that becomes cryogenic gas is got back to outdoor assembly 110 once more from stoping valve 15 through cross valve 12, actuator 6, is inhaled in the idle call compressor 1,2.
On the other hand, with in the refrigerant loop 102, cold-producing medium flows shown in the solid arrow of Fig. 1 freezing.From the freezing freezing freezing heat-transfer pipe 3b that flows into freezing air conditioner heat exchanger 3 with high temperature refrigerant through non-return valve 22 with path with ejection the compressor 21.This high temperature refrigerant is in freezing air conditioner heat exchanger 3, to the outdoor air heat release of being sent here by air blast 40 and condensation.Chilled liquid refrigerant is through adjusting valve 23 as the condensing pressure of an example of condensing pressure adjusting device after temporarily concentrating in the accumulator 24, flow into the freezing of freezing air conditioner heat exchanger 3 with aftercooler part 25, here by with the heat exchange of outdoor air by supercooling, be sent to freezing through stoping valve 27, drier 28, inspection window 29 with indoor assembly 130.In addition, the liquid refrigerant that has been branched in the front that stops valve 27 is by 31 decompressions of liquid collateral branch loop and get back in the pipe arrangement of suction side.The action in this liquid collateral branch loop 31 is controlled as and rises to given temperature at freezing ejection gas temperature with compressor 21 and carry out when above.
After indoor freezing usefulness expansion valve 62 decompressions of liquid refrigerant in being frozen usefulness indoor assembly 130 from inspection window 29, by indoor freezing with heat exchanger 61 in Component Gallery in air carry out heat exchange, heat absorption and evaporating the air in the storehouse is with air cooling in the storehouse.Evaporation and become cryogenic gas freezingly get back to outdoor assembly 110 with cold-producing medium once more from stoping valve 30 through actuator 26, is inhaled into freezing with compressor 21.
At this moment, air blast 40 is controlled by the motion flow of Fig. 3 or Fig. 4.Fig. 3 is idle call cold-producing medium and freezing motion flow when being identical type with cold-producing medium, and Fig. 4 is both motion flows when being variety classes.
When cooling operation, as shown in Figures 3 and 4, the condensing pressure A of idle call refrigerant loop 101 is detected by idle call pressure sensor 16 and imports controller 200 (step S1), and freezing condensing pressure B with refrigerant loop 102 is frozen with pressure sensor 32 and detects and import controller 200 (step S2).And idle call pressure sensor 16 can detect as the separator 5 of the junction of two streams of the ejection side of 2 idle call compressors 1,2 and the pressure on the pipe arrangement road between the cross valve 12.
In addition, when the idle call cold-producing medium is identical with freezing usefulness cold-producing medium, as shown in Figure 3, directly compare condensing pressure A and condensing pressure B (step S4a).In addition, the idle call cold-producing medium and freezing be under different types of situation with cold-producing medium, as shown in Figure 4, to freezing condensing pressure B with cold-producing medium, physics value based on the idle call cold-producing medium that is equivalent to identical saturation temperature, obtain according to can the mode corresponding having carried out revising the condensing pressure B ' (step S3) that converts, relatively condensing pressure A and condensing pressure B ' (step S4b) with the condensing pressure of idle call cold-producing medium.
Based on the pressure of any one higher side of this result of determination,, utilize controller 200 to carry out the control of the rotating speed output of air blast 40 according to the mode of the rising that suppresses condensing pressure.Promptly, controller 200 is higher than under the situation of condensing pressure B or B ' at condensing pressure A, rotating speed (step S5) based on condensing pressure A control air blast 40 is higher than under the situation of condensing pressure A at condensing pressure B or B ', based on the rotating speed (step S6) of condensing pressure B control air blast 40.And, also can replace the rotating speed of controlling air blast 40 based on condensing pressure B, and control the rotating speed of air blast 40 based on condensing pressure B '.
Below, in reference Fig. 1, the action when turning round to the system of refrigerating air-conditioning 100 is warm describes.When the warm running of the system of refrigerating air-conditioning 100 was begun, in idle call refrigerant loop 101, cold-producing medium flowed shown in the dotted arrow of Fig. 1.The idle call high temperature refrigerant of ejection flowed to cross valve 12 in the same manner with when refrigeration from idle call compressor 1,2, was switched to the dotted line direction yet flow at cross valve 12 places, was sent to idle call indoor assembly 120 through stoping valve 15.In idle call indoor assembly 120, carried out heat exchange with heat exchanger 51 and room air, by to the room air heat release and room air is heated in condensation by room conditioning.Condensation and the idle call cold-producing medium that becomes liquid refrigerant is got back to outdoor assembly 110 once more from stoping valve 14 flows into the idle call aftercooler part 8 of freezing air conditioner heat exchanger 3.Cold-producing medium utilizes heat exchange with outdoor air by supercooling and after concentrating in the accumulator 4 here, is inflated valve 13 decompressions and flows into the heat-transfer pipe 3a of the idle call path of freezing air conditioner heat exchanger 3 once more.The idle call cold-producing medium that has been depressurized carries out heat exchange with the outdoor air of being sent here by air blast 40 in freezing air conditioner heat exchanger 3, heat absorption and evaporating.The idle call cold-producing medium that evaporates and become cryogenic gas is inhaled in the idle call compressor 1,2 through cross valve 12, actuator 6.
On the other hand, with in the refrigerant loop 102, cold-producing medium flows shown in the solid arrow of Fig. 1 freezing.That is, freezing with refrigerant loop 102 when the warm running of system, also be refrigerant loop action identical during with cooling operation.Consequently, freezing air conditioner heat exchanger 3 plays a role as evaporimeter in the heat-transfer pipe 3a of idle call path, plays a role as condenser in freezing heat-transfer pipe 3b with path.At this moment, though a side big at any one institute's required airflow carries out the control of air blast 40, but owing to make the situation of warm running is winter, less with the cooling load of the refrigeration of freezing showcase that is connected with refrigerant loop 102 etc. or freezing assembly, air quantity required in condensation is less, therefore selects to be suitable for the warm air quantity that turns round of system of idle call refrigerant loop 101.
When the warm running of system, the evaporating pressure C of idle call refrigerant loop 101 is detected by idle call pressure sensor 17 and imports controller 200, in order to suppress the reduction of the warm evaporating temperature of air-conditioning system, according to the mode that increases air quantity according to the reduction of ambient temperature, utilize controller 200 to carry out the control of the rotating speed output of air blast 40.And idle call pressure sensor 17 can detect as the actuator 6 of the junction of two streams of the suction side of 2 idle call compressors 1,2 and the pressure on the pipe arrangement road between the cross valve 12.
At this moment, with in the refrigerant loop 102, because turning round than the bigger air quantity of the necessary air quantity of the condensation in freezing air conditioner heat exchanger 3, so condensing pressure reduces freezing, and freezing high side pressure with compressor 21 descends.Thus, it is low that freezing pressure ratio with compressor 21 was compared with setting, and cause obstacle for the differential pressure oil supply of compressor inside.So, in the present embodiment, freezingly adjust valve 23 with the condensing pressure in the refrigerant loop 102 and carry out the throttling action according to the mode that does not become the condensing pressure below the certain value by making, guarantee the pressure ratio of stipulating.
And, when the air-conditioning side has stopped the warm running of system, just become freezing with the independent running of refrigerant loop 102, identical when turning round with air conditioner refrigerating, based on by freezing value, utilize controller 200 to carry out the control of the rotating speed output of air blast 40 with pressure sensor 32 detected condensing pressures.
The heat-transfer pipe 3b of the heat-transfer pipe 3a of the idle call path of freezing air conditioner heat exchanger 3 and freezing usefulness path as shown in Figure 2, freezing heat-transfer pipe 3a with path all is configured in the upstream side of the air stream that produces by air blast 40, make the part of heat-transfer pipe 3b of idle call path and the upstream side that freezing heat-transfer pipe 3b with path is configured in air stream in the same manner, make the remaining downstream side that is positioned at air stream.When the warm running of system, being inflated idle call cold-producing medium that valve 13 reduced pressure carries out the heat exchange heat absorption with the outdoor air of being sent here by air blast 40 and evaporates in freezing air conditioner heat exchanger 3, by adopting configuration as shown in Figure 2, the part of freezing condensation heat with path will improve the intake air temperature of idle call passage portion, this temperature ascending amount can increase the caloric receptivity in the heat-transfer pipe of idle call path, thereby causes the increase of the warm ability of system of idle call refrigerant loop 101.
According to present embodiment, owing to idle call heat-transfer pipe 3a and freezing being integrally formed by heat transfer sheet 3c with heat-transfer pipe 3b are constituted refrigerating and air conditioning heat exchanger 3, possess when idle call heat-transfer pipe 3a is carried out cooling operation as condenser, based on idle call refrigerant loop 101 and the freezing condensing pressure of using any one higher side of refrigerant loop 102, the controller 200 of the rotating speed of control air blast 40, therefore just can obtain when will installing integral miniaturization, be suitable for idle call refrigerant loop 101 and the freezing refrigerating air-conditioning 100 of using the running of refrigerant loop 102.
In addition, because controller 200 is under different types of situation at the cold-producing medium that is used for idle call refrigerant loop 101 with being used for freezing cold-producing medium with refrigerant loop 102, be used as condenser when carrying out cooling operation at idle call heat-transfer pipe 3a, the condensing pressure of idle call refrigerant loop 101 and freezing any one higher side with refrigerant loop 102 is carried out converting based on the correction of the rerum natura of low side's cold-producing medium, relatively this has carried out revising the condensing pressure of the condensing pressure that converts and other refrigerant loop, control the rotating speed of air blast 40 based on the condensing pressure of any one higher side, therefore just can use to be suitable for idle call refrigerant loop 101 and freezing cold-producing medium respectively, be suitable for idle call refrigerant loop 101 and freezing running with refrigerant loop 102 with refrigerant loop 102.
In addition, because when controller 200 is used as the warm running of evaporimeter system at idle call heat-transfer pipe 3a, evaporating pressure based on idle call refrigerant loop 101, the rotating speed of control air blast 40, therefore just can the reduction according to ambient temperature increase air quantity, warm up load greater than guaranteeing that essential air-conditioning system warms up ability the winter of chilled load in system for the reduction that suppresses the warm evaporating temperature of air-conditioning system.
In addition, owing to possess and when idle call heat-transfer pipe 3a is used as the warm running of evaporimeter system, adjust the freezing condensing pressure adjusting device of using the condensing pressure of refrigerant loop 102, therefore just can be in the warm load of system greater than guaranteeing that essential air-conditioning system warms up ability the winter of chilled load, can avoid simultaneously because air quantity makes freezing condensing pressure reduction greater than the essential air quantity of freezing side, pressure ratio was compared low and was caused the situation of obstacle for the differential pressure oil supply of compressor inside with setting, thereby can guarantee to be difficult to be subjected to the running of stable freezing side of the influence of air-conditioning crosswind amount.
In addition, because refrigerating and air conditioning heat exchanger 3 is by according to respect to the flow direction because of the driving leaked-in air of air blast 40, the mode that makes heat-transfer pipe constitute a plurality of row disposes, belong to the mobile position that be positioned at the row that become upstream side of freezing heat-transfer pipe 3b with refrigerant loop 102 with respect to air, therefore belong to the intake air temperature that a freezing part with the condensation heat among the heat-transfer pipe 3b of refrigerant loop 102 will improve idle call heat exchanger part, when the warm running of system of air-conditioning, this temperature ascending amount causes making the raising of warm ability as playing a role to the caloric receptivity as the idle call heat-transfer pipe 3a of evaporimeter.In addition, owing to compare during with common running, the frosting degree of freezing air conditioner heat exchanger 3 reduces, and therefore can expect to improve the effect of the reduction of the warm ability of air-conditioning system.
Claims (9)
1. a refrigerating air-conditioning is to constitute the idle call freeze cycle with the idle call refrigerant loop with the idle call heat-transfer pipe that becomes condenser and become evaporimeter when cooling operation when system warms up running,
Constitute the freezing freeze cycle of using with having freezing the freezing of heat-transfer pipe of using that becomes condenser with refrigerant loop,
With described idle call heat-transfer pipe with describedly freezingly be integrally formed by heat transfer sheet with heat-transfer pipe and constitute the refrigerating and air conditioning heat exchanger,
Possess the refrigerating air-conditioning of the air blast that ventilates to described refrigerating and air conditioning heat exchanger, it is characterized in that,
Possess: be used as condenser when carrying out cooling operation at described idle call heat-transfer pipe,, control the control device of the rotating speed of described air blast based on the condensing pressure of described idle call refrigerant loop and described freezing any one higher side with refrigerant loop.
2. refrigerating air-conditioning according to claim 1 is characterized in that,
Described control device, is under different types of situation at the cold-producing medium that is used for described idle call refrigerant loop with being used for described freezing cold-producing medium with refrigerant loop, be used as condenser when carrying out cooling operation at described idle call heat-transfer pipe, to being used in described freezing freezing condensing pressure with cold-producing medium with refrigerant loop, physics value based on the idle call cold-producing medium that is used in described idle call refrigerant loop is revised conversion, relatively this has carried out revising the condensing pressure of conversion and the condensing pressure of idle call refrigerant loop, controls the rotating speed of described air blast based on the condensing pressure of any one higher side.
3. refrigerating air-conditioning according to claim 1 is characterized in that,
Described control device when described idle call heat-transfer pipe is used as the warm running of evaporimeter system, based on the evaporating pressure of described idle call refrigerant loop, is controlled the rotating speed of described air blast.
4. refrigerating air-conditioning according to claim 3 is characterized in that,
Possess and when described idle call heat-transfer pipe is used as the warm running of evaporimeter system, adjust the described freezing condensing pressure adjusting device of using the condensing pressure of refrigerant loop.
5. refrigerating air-conditioning according to claim 4 is characterized in that,
Described condensing pressure adjusting device is adjusted valve by condensing pressure and is constituted, described condensing pressure is adjusted valve and is located at described freezing with on the refrigerant loop, when described idle call heat-transfer pipe is used as the warm running of evaporimeter system, carry out the throttling action according to the mode that described freezing condensing pressure with refrigerant loop is reached more than the setting pressure.
6. according to any described refrigerating air-conditioning in the claim 3 to 5, it is characterized in that,
Described refrigerating and air conditioning heat exchanger arrangement becomes to make heat-transfer pipe constitute a plurality of row on the flow direction of the leaked-in air by the driving of described air blast, and wherein, the row that belong to freezing heat-transfer pipe with refrigerant loop are positioned at the upstream side of air-flow direction.
7. a refrigerating air-conditioning is to constitute the idle call freeze cycle with the idle call refrigerant loop with the idle call heat-transfer pipe that becomes condenser and become evaporimeter when cooling operation when system warms up running,
Constitute the freezing freeze cycle of using with having freezing the freezing of heat-transfer pipe of using that becomes condenser with refrigerant loop,
With described idle call heat-transfer pipe with describedly freezingly be integrally formed by heat transfer sheet with heat-transfer pipe and constitute the refrigerating and air conditioning heat exchanger,
Possess the refrigerating air-conditioning of the air blast that ventilates to described refrigerating and air conditioning heat exchanger, it is characterized in that,
Possess: when described idle call heat-transfer pipe is used as the warm running of evaporimeter system,, control the control device of the rotating speed of described air blast based on the evaporating pressure of described idle call refrigerant loop.
8. refrigerating air-conditioning according to claim 7 is characterized in that,
Possess and when described idle call heat-transfer pipe is used as the warm running of evaporimeter system, adjust the described freezing condensing pressure adjusting device of using the condensing pressure of refrigerant loop.
9. refrigerating air-conditioning according to claim 8 is characterized in that,
Described refrigerating and air conditioning heat exchanger arrangement becomes to make heat-transfer pipe constitute a plurality of row on the flow direction of the leaked-in air by the driving of described air blast, and wherein, the row that belong to freezing heat-transfer pipe with refrigerant loop are positioned at the upstream side of air-flow direction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004219631A JP4420393B2 (en) | 2004-07-28 | 2004-07-28 | Refrigeration air conditioner |
| JP2004219631 | 2004-07-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1734215A CN1734215A (en) | 2006-02-15 |
| CN100523657C true CN100523657C (en) | 2009-08-05 |
Family
ID=35903523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510087926XA Expired - Fee Related CN100523657C (en) | 2004-07-28 | 2005-07-27 | Freezing air-conditioning apparatus |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4420393B2 (en) |
| CN (1) | CN100523657C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4898546B2 (en) * | 2007-05-10 | 2012-03-14 | 日立アプライアンス株式会社 | Refrigeration equipment |
| CN105747590A (en) * | 2016-04-20 | 2016-07-13 | 青岛有屋家居集成有限公司 | Split cupboard connection system |
-
2004
- 2004-07-28 JP JP2004219631A patent/JP4420393B2/en not_active Expired - Fee Related
-
2005
- 2005-07-27 CN CNB200510087926XA patent/CN100523657C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1734215A (en) | 2006-02-15 |
| JP2006038352A (en) | 2006-02-09 |
| JP4420393B2 (en) | 2010-02-24 |
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