CN108931075A - Heat pump system and its control method - Google Patents
Heat pump system and its control method Download PDFInfo
- Publication number
- CN108931075A CN108931075A CN201810636060.0A CN201810636060A CN108931075A CN 108931075 A CN108931075 A CN 108931075A CN 201810636060 A CN201810636060 A CN 201810636060A CN 108931075 A CN108931075 A CN 108931075A
- Authority
- CN
- China
- Prior art keywords
- pump system
- heat
- heat pump
- heater
- heating
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 184
- 239000003507 refrigerant Substances 0.000 claims abstract description 101
- 230000007246 mechanism Effects 0.000 claims abstract description 56
- 238000005057 refrigeration Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 10
- 239000003570 air Substances 0.000 description 31
- 238000010586 diagram Methods 0.000 description 9
- 238000005086 pumping Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000010257 thawing Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 235000015110 jellies Nutrition 0.000 description 2
- 239000008274 jelly Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 239000005439 thermosphere Substances 0.000 description 1
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
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
-
- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention discloses a kind of heat pump system and its control method, the heat pump system includes: compressor, indoor heat exchanger, outdoor heat exchanger, throttling set, bypass flow path, first heater and secondary heating mechanism, and compressor has air entry and exhaust outlet；Another when one of them in air entry and exhaust outlet is connected to the first indoor heat-exchange end in air entry and exhaust outlet is connected to the first outdoor heat exchange end；Bypass flow path is connected between the first outdoor heat exchange end and the outer heat-exchange end of second Room, and bypass flow path is equipped with the on-off valve for controlling bypass flow path on-off；First heater is located at exhaust ports；Secondary heating mechanism is located between the outer heat-exchange end of second Room and throttling set.Heat pump system according to the present invention, heat pump system heating starting is fast, the not portable excessive refrigeration oil of refrigerant being discharged from compressor, so that the reliability of compressor is improved, and normal heating effect is good, defrost speed block, without shutting down defrost.
Description
Technical field
The present invention relates to air-conditioning technical fields, more particularly, to a kind of heat pump system and its control method.
Background technique
In the related technology, in a heating mode, refrigerant is by the outdoor heat exchanger of outdoor unit from outdoor air for heat pump system
Heat is absorbed, then improves pressure and temperature by compressor, the heat of outside is discharged to interior to achieve the effect that heating.
However, the outdoor temperature in winter is lower, it can be transported to that indoor heat is fewer, and indoor heating effect will be got over from outdoor
Difference, and refrigerant in outdoor heat exchanger is since it is desired that absorb the heat of outdoor air, it is necessary to lower than the temperature of outdoor air,
This will lead to outdoor heat exchanger frosting in a heating mode, need to defrost to guarantee that entire heat pump system can pacify again after frosting
Complete effectively operation.
It, at this time can be from moreover, need to defrost at regular intervals to guarantee that outdoor unit can continue heat supply running
Indoor heat absorption carrys out the defrosting for outdoor heat exchanger, and at this moment, indoor unit cannot be heated normally, so that will lead to room temperature has
Reduction in 10 minutes or so, and a period of time switching and starting pressure are also required to when outdoor unit restores heating mode again
Contracting machine is gradually heated up refrigerant, and heat pump system could provide heating operation service again.
In addition, when heat pump system heats starting at low temperature, due to solubility of the refrigeration oil in refrigerant under low temperature
It is larger, it is also desirable to compressor carry out for a long time preheating mode come improve compressor discharge refrigerant temperature, guarantee refrigerant evaporation
Excessive refrigeration oil will not be carried, will not influence the normal operation of compressor.
In addition, when outdoor temperature as low as to a certain degree when, can will be considerably less from the heat of outdoor absorption so that
The electric energy for supplying compressor might as well be directly directly used in the energy of electric heater acquisition in indoor heating capacity.However,
Usual indoor unit (the especially indoor unit of multi-connected machine) will not generally configure electric heater, and even if the electric heating of indoor unit is opened
It opens as the configuration of indoor electric wire cannot be used for a long time and there is the indoor security risk for using electric heater.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, the present invention proposes a kind of heat
The heating performance of pumping system, the heat pump system is good.
The present invention also proposes a kind of control method of above-mentioned heat pump system.
The heat pump system of embodiment according to a first aspect of the present invention, comprising: compressor, the compressor have air entry and
Exhaust outlet；Indoor heat exchanger, the indoor heat exchanger have heat-exchange end in the first indoor heat-exchange end and second Room；Outdoor heat exchange
Device, the outdoor heat exchanger has the first outdoor heat exchange end and the outer heat-exchange end of second Room, when the air entry and the exhaust outlet
In one of them when being connected to the described first indoor heat-exchange end in the air entry and the exhaust outlet another with it is described
The connection of first outdoor heat exchange end；Throttling set, the throttling set are located in the second Room outside heat-exchange end and the second Room
Between heat-exchange end；Bypass flow path, the bypass flow path are connected to first outdoor heat exchange end and the outer heat-exchange end of the second Room
Between, the bypass flow path is equipped with the on-off valve for controlling the bypass flow path on-off；First heater, described first
Heating device is located at the exhaust ports；Secondary heating mechanism, the secondary heating mechanism are located at the outer heat-exchange end of the second Room
Between the throttling set.
The heat pump system of embodiment according to a first aspect of the present invention, by the way that above-mentioned bypass flow path, on-off valve, first is arranged
Heating device and secondary heating mechanism, heat pump system heating starting is fast, and the refrigerant being discharged from compressor is not portable excessive
Refrigeration oil, so that the reliability of compressor is improved, and normal heating effect is good, defrost speed block, without shutting down defrost.
According to some embodiments of the present invention, the exhaust ports are equipped with exhaust refrigerant pipe, the outer heat-exchange end of the second Room
It is connected between the throttling set by connecting pipeline.
According to some embodiments of the present invention, the first heater is the resistance being wrapped on the exhaust refrigerant pipe
Heater strip or the resistance heating tube being set in outside the exhaust refrigerant pipe, the secondary heating mechanism are to be wrapped in the communicating pipe
The resistance heating wire of road or the resistance heating tube being set in outside the connecting pipeline.
According to some embodiments of the present invention, the first heater is to be connected on the exhaust refrigerant pipe and have
First refrigerant pipeline section of resistant heat generating layer, the secondary heating mechanism are to be connected on the connecting pipeline and have resistance heating
Second refrigerant pipeline section of layer.
According to some embodiments of the present invention, the first refrigerant pipeline section and the second refrigerant pipeline section are respectively hollow knot
Structure, porous structure or the internal structure with enhanced heat exchange structure.
According to some embodiments of the present invention, when the first refrigerant pipeline section and the second refrigerant pipeline section are respectively porous
When structure, the first refrigerant pipeline section and the second refrigerant pipeline section are respectively microchannel plate.
According to some embodiments of the present invention, when the microchannel plate is one, at least side of the microchannel plate
Surface is equipped with the resistant heat generating layer；When the microchannel plate is multiple, between at least two neighboring microchannel plate
Equipped with the resistant heat generating layer.
According to some embodiments of the present invention, at least one of the first refrigerant pipeline section and the second refrigerant pipeline section
Insulating part is equipped between the corresponding resistant heat generating layer.
According to some embodiments of the present invention, the on-off valve is solenoid valve.
According to some embodiments of the present invention, the throttling set is electric expansion valve or capillary.
The control method of the heat pump system of embodiment according to a second aspect of the present invention, the heat pump system are according to the present invention
The heat pump system of above-mentioned first aspect embodiment, the control method the following steps are included:
In the case where heating start-up mode,
Open the on-off valve, the first heater and the secondary heating mechanism；
After heating starting determines, the on-off valve and the secondary heating mechanism are closed, into normal heating mode；
Under normal heating mode,
Judge whether the actual exhaust air temperature for the refrigerant being discharged from the exhaust outlet is lower than default delivery temperature maximum value；
If it is judged that be it is yes,
When the compressor reaches maximum frequency and the actual exhaust air temperature not up to default delivery temperature target value,
The first heater is set to be maintained at opening state；
If it is judged that be it is no,
In the case where the compressor does not reach maximum frequency, the first heater is closed；
When detecting that the outdoor heat exchanger reaches defrost condition, into defrost pattern；
Under defrost pattern,
Under the normal heating mode, the first heater and the secondary heating mechanism are opened；
When detect the outdoor heat exchanger reach exit defrost condition when, close the secondary heating mechanism, again into
Enter the normal heating mode；
Wherein, the default delivery temperature target value is less than the default delivery temperature maximum value.
According to some embodiments of the present invention, under the heating start-up mode, adjust according to target exhaust temperature described in
The output heating power of first heater and the secondary heating mechanism.
According to some embodiments of the present invention, under the normal heating mode and the judging result is when being, according to
Target exhaust temperature adjusts the output heating power of the first heater.
According to some embodiments of the present invention, it under the normal heating mode and when the judging result is no, relies on
The compressor itself adjusts heating output.
According to some embodiments of the present invention, under the defrost pattern, described first is adjusted according to target exhaust temperature
The output heating power of heating device and the secondary heating mechanism.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the schematic diagram of heat pump system according to an embodiment of the present invention；
Fig. 2 is the first heater of heat pump system according to an embodiment of the present invention or the schematic diagram of secondary heating mechanism；
Fig. 3 is the schematic diagram of first heater or secondary heating mechanism in accordance with another embodiment of the present invention；
Fig. 4 is the schematic diagram of the first heater or secondary heating mechanism of further embodiment according to the present invention；
Fig. 5 a is the schematic diagram of a microchannel plate and a resistant heat generating layer according to an embodiment of the present invention；
Fig. 5 b is the schematic diagram of a microchannel plate and two resistant heat generating layers according to an embodiment of the present invention；
Fig. 5 c is the schematic diagram of two microchannel plates and a resistant heat generating layer according to an embodiment of the present invention；
Fig. 5 d is the schematic diagram of two microchannel plates and three resistant heat generating layers according to an embodiment of the present invention；
Fig. 6 is the control logic schematic diagram of the control method of heat pump system according to an embodiment of the present invention.
Appended drawing reference:
100: heat pump system；
1: compressor；11: exhaust refrigerant pipe；12: connecting pipeline；
2: indoor heat exchanger；3: outdoor heat exchanger；
4: throttling set；5: bypass flow path；51: on-off valve；
61: first heater；62: secondary heating mechanism；
63: resistance heating wire；
64: the first refrigerant pipeline sections；65: the second refrigerant pipeline sections；66: resistant heat generating layer；
67: flow path end socket；68: adapter tube；
69: microchannel plate；
7: power supply.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.In addition, limit
There is the feature of " first ", " second " to can explicitly or implicitly include one or more of the features surely.Of the invention
In description, unless otherwise indicated, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Heat pump system 100 according to an embodiment of the present invention is described below with reference to Fig. 1-Fig. 6.Heat pump system 100 can be sky
Gas energy heat pump system.In the description below the application, it is illustrated so that heat pump system 100 is air energy thermal pumping system as an example.
Certainly, it will be understood by those skilled in the art that heat pump system 100 can also be other types of heat pump system 100, and is not limited to
Air energy thermal pumping system.
As shown in figs 1 to 6, the heat pump system 100 of embodiment such as air energy heat pump system according to a first aspect of the present invention
System, including compressor 1, indoor heat exchanger 2, outdoor heat exchanger 3, throttling set 4, bypass flow path 5, first heater 61 and
Secondary heating mechanism 62.
Specifically, referring to Fig.1, compressor 1 has air entry and exhaust outlet.Air entry into compressor 1 for being passed through
Refrigerant to be compressed.It is suitable for being discharged from exhaust outlet through the compressed refrigerant of compressor 1.
Indoor heat exchanger 2 has heat-exchange end in the first indoor heat-exchange end and second Room.Outdoor heat exchanger 3 has the first outdoor
Heat-exchange end and the outer heat-exchange end of second Room.When one of them in the air entry and exhaust outlet of compressor 1 with indoor heat exchanger 2
When one indoor heat-exchange end connection, the first outdoor of another and outdoor heat exchanger 3 in the air entry and exhaust outlet of compressor 1 is changed
Hot end connection.Specifically, when the air entry of compressor 1 is connected to the first indoor heat-exchange end, the exhaust outlet of compressor 1 and the
The connection of one outdoor heat exchange end, first passes through outdoor heat exchanger 3 from the refrigerant that the exhaust outlet of compressor 1 is discharged at this time, flows to interior again
Heat exchanger 2 is then returned in compressor 1 by the air entry of compressor 1 and is compressed again, and heat pump system 100 freezes at this time
Operation.When the air entry of compressor 1 is connected to the first outdoor heat exchange end, the exhaust outlet of compressor 1 and the first indoor heat-exchange end
Connection first passes through indoor heat exchanger 2 from the refrigerant that the exhaust outlet of compressor 1 is discharged at this time, flows to outdoor heat exchanger 3 again, then
It is returned in compressor 1 by the air entry of compressor 1 and is compressed again, at this time 100 heating operation of heat pump system.Optionally,
The air entry and exhaust outlet of compressor 1 are changed with the first indoor heat-exchange end of indoor heat exchanger 2, the first outdoor of outdoor heat exchanger 3
Conduction mode between hot end can be realized by four-way reversing valve.But not limited to this.
Throttling set 4 is located at heat-exchange end and the outer heat-exchange end of the second Room of outdoor heat exchanger 3 in the second Room of indoor heat exchanger 2
Between.Optionally, throttling set 4 is electric expansion valve or capillary.But not limited to this.
Bypass flow path 5 is connected between the first outdoor heat exchange end of outdoor heat exchanger 3 and the outer heat-exchange end of second Room, bypass stream
Road 5 is equipped with the on-off valve 51 for controlling 5 on-off of bypass flow path.Refrigerant when on-off valve 51 disconnects, in heat pump system 100
Do not pass through bypass flow path 5.When on-off valve 51 is connected, refrigerant can pass through bypass flow path 5.First heater 61 is located at compression
The exhaust ports of machine 1.Secondary heating mechanism 62 is located between the outer heat-exchange end of second Room of outdoor heat exchanger 3 and throttling set 4.
As a result, for example, being opened when heat pump system 100 heats under low temperature (for example, winter) such as air energy thermal pumping system
When dynamic, on-off valve 51, first heater 61 and secondary heating mechanism 62 can be opened, is discharged from the exhaust outlet of compressor 1
Refrigerant obtains more thermal energy after the heating of first heater 61, and is delivered to indoor heat exchanger 2, can promote Indoor Temperature
Degree, the refrigerant flowed out from indoor heat exchanger 2 flow to secondary heating mechanism 62 through throttling set 4, are heated by secondary heating mechanism 62
Most refrigerants afterwards can flow back to compressor 1 again by bypass flow path 5, and fraction refrigerant is even changed without refrigerant by outdoor
Hot device 3.It looping back and forth like this, the refrigerant temperature being discharged from the exhaust outlet of compressor 1 can be increased quickly in a short time,
Thus, it is possible to heating quick start be realized, so that compressor 1, which needs not move through long-time preheating mode, can improve compressor
The refrigerant temperature of 1 discharge, while ensure that refrigerant evaporation will not carry excessive refrigeration oil, and then will not influence compressor 1
It operates normally.
When the normal heating operation of such as air energy thermal pumping system of heat pump system 100, first heater 61 can be opened,
It promotes the refrigerant temperature being discharged from compressor 1 further, is delivered to interior, so as to meet indoor relax well
Moderate demand.Compared with traditional heat pump system 100, indoor heating capacity ensure that, and solve because of indoor electric wire
Configuration cannot be used for a long time and there is the indoor security risk for using electric heater.
In such as air energy thermal pumping system of heat pump system 100 after the heating operation of a period of time, second can be opened
Heating device 62 allows to be heated from indoor heat exchanger 2 to the liquid refrigerants of outdoor heat exchanger 3 by secondary heating mechanism 62 laggard
Enter outdoor heat exchanger 3 to melt the frost layer of outdoor heat exchanger 3.In above process, heat pump system 100 can normally heat fortune
Defrost is not shut down in row, realization.Solve the problems, such as that traditional heat pump system 100 cannot be heated normally in defrosting as a result, and
Thus caused room temperature has reduction in 10 minutes or so, and is also required to when outdoor unit restores heating mode again
A period of time switches and starting compressor 1 is gradually heated up refrigerant, and heat pump system 100 could provide asking for heating operation service again
Topic.
As a result, by using above-mentioned heat pump system 100, overcomes cold district and use traditional heat pump system 100
If air energy thermal pumping system is under low-temperature heating, the machine starting capability improving of (1) jelly is slow, and delivery temperature deficiency, which causes to carry, to be freezed
The oil eliminator of oil discharge heat pump system 100；(2) defrost speed is slow, needs to shut down defrost；(3) heating effect is poor asks
Topic.Heat pump system 100 according to an embodiment of the present invention can be air energy+heating exhaust gas hybrid power low temperature heat-flash heat pump system
System 100 increases first heater 61 by the exhaust side of the compressor 1 in outdoor unit, and reaching can not be by ambient air temperature shadow
It rings, heating capacity is unattenuated below -20 degree, does not need indoor unit electricity auxiliary heating；It can satisfy quick heating, heating booting is sent
Hot wind speed doubles, so as to make user quickly experience comfortable experience；Quick defrost, defrost speed double, fastly
The effect that quick-recovery is comfortably experienced.
The heat pump system 100 of embodiment according to a first aspect of the present invention, by the way that above-mentioned bypass flow path 5, on-off valve is arranged
51, first heater 61 and secondary heating mechanism 62, the heating starting of heat pump system 100 is fast, the refrigerant being discharged from compressor 1
Not portable excessive refrigeration oil, so that the reliability of compressor 1 is improved, and normal heating effect is good, defrost speed block, nothing
Defrost need to be shut down.
Some specific embodiments according to the present invention, as shown in Figure 1, exhaust ports are equipped with exhaust refrigerant pipe 11, outdoor is changed
It is connected between the outer heat-exchange end of the second Room of hot device 3 and throttling set 4 by connecting pipeline 12.Pass through setting exhaust refrigerant as a result,
Pipe 11 and connecting pipeline 12, refrigerant flows in which can be convenient in exhaust refrigerant pipe 11 and connecting pipeline 12, and is vented refrigerant pipe
11 and connecting pipeline 12 structure it is simple, it is at low cost.
First heater 61 and secondary heating mechanism 62 can be for by the heating refrigerants of resistance or the fever of other principles
Heating device.The exhaust side of compressor 1 is arranged in first heater 61, and the heating to exchange heat with cold media gas fills
It sets.The inlet side of outdoor heat exchanger 3 in a heating mode is arranged in secondary heating mechanism 62, is and refrigerant vehicle repair major or liquid
The heating device that state exchanges heat.
Some alternative embodiments according to the present invention, first heater 61 can be to be wrapped on exhaust refrigerant pipe 11
Resistance heating tube resistance heating wire 63 (for example, as shown in Figure 2) or be set in outside exhaust refrigerant pipe 11, secondary heating mechanism 62
For the resistance heating wire 63 (for example, as shown in Figure 2) being wrapped on connecting pipeline 12 or the resistance being set in outside connecting pipeline 12
Heating tube.It is vented on refrigerant pipe 11 or connecting pipeline 12 by the way that resistance heating wire 63 to be directly wound in as a result, or uses casing
Form resistance heating tube is sleeved on exhaust refrigerant pipe 11 or connecting pipeline 12, by power supply 7 to resistance heating wire 63 or
Resistance heating tube power supplying and heating can well heat the refrigerant flowed through in exhaust refrigerant pipe 11 or connecting pipeline 12,
It has the advantages of simple structure and easy realization.
Some alternative embodiments according to the present invention, as shown in figure 3, first heater 61 is to be connected on exhaust refrigerant pipe
On 11 and the first refrigerant pipeline section 64 with resistant heat generating layer 66, secondary heating mechanism 62 are to be connected on connecting pipeline 12 and have
There is the second refrigerant pipeline section 65 of resistant heat generating layer 66.For example, in the example of fig. 3, resistant heat generating layer 66 can S-shaped cloth respectively
It sets on the outer surface of the first refrigerant pipeline section 64 and the second refrigerant pipeline section 65, to increase and the first refrigerant pipeline section 64 and the second refrigerant
The end of the heat exchange area of refrigerant in pipeline section 65, the first refrigerant pipeline section 64 and the second refrigerant pipeline section 65 can be equipped with flow path end socket
67 and adapter tube 68, to be attached with the corresponding pipeline in heat pump system 100.It is filled as a result, by using the first above-mentioned heating
61 and secondary heating mechanism 62 are set, can equally be generated heat by power supply 7 to resistant heat generating layer 66, so as to right well
The refrigerant flowed through in the first refrigerant pipeline section 64 or the second refrigerant pipeline section 65 is heated.
Optionally, the first refrigerant pipeline section 64 and the second refrigerant pipeline section 65 are respectively hollow structure, porous structure or internal tool
There is the structure of enhanced heat exchange structure.It is flowed through in the first refrigerant pipeline section 64 or the second refrigerant pipeline section 65 thus, it is possible to further enhance
Refrigerant heat transfer effect.For example, first is cold when the first refrigerant pipeline section 64 and the second refrigerant pipeline section 65 are respectively porous structure
Matchmaker's pipeline section 64 and the second refrigerant pipeline section 65 are respectively microchannel plate 69, as shown in Figure 4.
It can be with resistant heat generating layer 66 using the first heater 61 or secondary heating mechanism 62 of 69 form of microchannel plate
The first heater 61 or the second of the big heat exchange area of combining form is constituted with the difference of the combining form of microchannel plate 69
Heating device 62.Specifically, an at least side surface for microchannel plate 69 is sent out equipped with resistance when microchannel plate 69 is one
Thermosphere 66.Such as in the example of Fig. 5 a, when microchannel plate 69 is one, resistant heat generating layer 66 is only defined microchannel plate 69
On a side surface on thickness direction.Such as in the example of Fig. 5 b, when microchannel plate 69 is one, resistant heat generating layer 66 is same
When be located in the both side surface on the thickness direction of microchannel plate 69.
When microchannel plate 69 is multiple, resistant heat generating layer 66 is equipped between at least two neighboring microchannel plate 69.Such as
In the example of Fig. 5 c, when microchannel plate 69 is two, the two microchannel plates 69 are stacked in a thickness direction, resistance heating
Layer 66 is located between the two microchannel plates 69.Such as in the example of Fig. 5 d, when microchannel plate 69 is two, resistance heating
Layer 66 is located between the two microchannel plates 69, and on the surface far from another microchannel plate 69 of each microchannel plate 69
Equipped with resistant heat generating layer 66.
It is understood that the number of microchannel plate 69 and the specific arrangement method of resistant heat generating layer 66 can be according to realities
Border requires specific setting, preferably to meet practical application.
Further, at least one of the first refrigerant pipeline section 64 and the second refrigerant pipeline section 65 and corresponding resistant heat generating layer
Insulating part is equipped between 66.As a result, by setting insulating part, the safety of entire heat pump system 100 during the work time ensure that
Property.
Optionally, the first refrigerant pipeline section 64 and the second refrigerant pipeline section 65 can be formed by metal or process for un-metal material.
As a result, by using above-mentioned first heater 61 and secondary heating mechanism 62, resistant heat generating layer 66 can be with
First refrigerant pipeline section 64 or the second refrigerant pipeline section 65 are combined closely, and heat transfer is apart from short, so thermal resistance very little, thermal response speed
Fastly.
Optionally, on-off valve 51 is solenoid valve.As a result, by using solenoid valve, can be realized by the way of automatically controlled
The on-off of bypass flow path 5, to be convenient for users to operate.
Heat pump system 100 according to an embodiment of the present invention, by installing on-off valve 51, the exhaust of compressor 1 additional in outdoor unit
Side increases first heater 61, obtains more thermal energy after so that the compressor 1 of outdoor unit is vented further heating, is delivered to room
It is interior, meet indoor comfort level demand.Increase secondary heating mechanism by the heating entrance of the outdoor heat exchanger 3 in outdoor unit
62, the liquid refrigerants of indoor unit to outdoor unit enters outdoor heat exchanger 3 after being heated by secondary heating mechanism 62 and be melted when defrost
Change the frost layer of outdoor unit, defrost is not shut down in realization.
Heat pump system 100 according to an embodiment of the present invention is the hybrid power low temperature heat-flash heat pump system that can not shut down defrost
System 100 has the characteristics that realize normal refrigeration and reinforces heating, forms heat pump air conditioner+heating exhaust gas+defrosting and heat three-in-one system
System.
As shown in fig. 6, the control method of the heat pump system 100 of embodiment according to a second aspect of the present invention, heat pump system 100
For according to the heat pump system 100 of the above-mentioned first aspect embodiment of the present invention, control method the following steps are included:
In the case where heating start-up mode,
Open on-off valve 51, first heater 61 and secondary heating mechanism 62；
After heating starting determines, on-off valve 51 and secondary heating mechanism 62 are closed, into normal heating mode；
Under normal heating mode,
Judge whether the actual exhaust air temperature for the refrigerant being discharged from exhaust outlet is lower than default delivery temperature maximum value；
If it is judged that be it is yes,
When compressor 1 reaches maximum frequency and actual exhaust air temperature not up to default delivery temperature target value, make first
Heating device 61 is maintained at opening state；
If it is judged that be it is no,
In the case where compressor 1 does not reach maximum frequency, first heater 61 is closed；
When detecting that outdoor heat exchanger 3 reaches defrost condition, into defrost pattern；
Under defrost pattern,
Under normal heating mode, first heater 61 and secondary heating mechanism 62 are opened；
When detect outdoor heat exchanger 3 reach exit defrost condition when, close secondary heating mechanism 62, reenter normal
Heating mode；
Wherein, it presets delivery temperature target value and is less than default delivery temperature maximum value.
Heating quick start may be implemented in the control method of heat pump system 100 according to an embodiment of the present invention, normal to heat
Effect is good, and may be implemented not shut down defrost, solves the starting of jelly machine slowly, and delivery temperature is insufficient, and easy to carry refrigeration oil discharge is oily
Separator and influence 1 reliability of compressor, defrost speed slowly, need to shut down defrost, and normal heating effect is poor asks
Topic.
According to some embodiments of the present invention, it under above-mentioned heating start-up mode, can be adjusted according to target exhaust temperature
The output heating power of first heater 61 and secondary heating mechanism 62.Thus, it is possible to guarantee that the temperature of heating exhaust gas is unlikely
In excessively high and refrigeration oil is caused to encounter the phenomenon that high temperature is carbonized.
According to some embodiments of the present invention, under above-mentioned normal heating mode and judging result is when being, according to target
The output heating power of delivery temperature adjusting first heater 61.Thus, it is possible to guarantee that the temperature of heating exhaust gas was unlikely to
It is high and refrigeration oil is caused to encounter the phenomenon that high temperature is carbonized.
According to some embodiments of the present invention, under above-mentioned normal heating mode and when judging result is no, by compression
Machine 1 itself adjusts heating output.
According to some embodiments of the present invention, under above-mentioned defrost pattern, the first heating is adjusted according to target exhaust temperature
The output heating power of device 61 and secondary heating mechanism 62.Thus, it is possible to guarantee the temperature of heating exhaust gas be unlikely to it is excessively high and
Refrigeration oil is caused to encounter the phenomenon that high temperature is carbonized.
Referring to Fig. 6, the specific control process of heat pump system 100 according to an embodiment of the present invention is as follows:
It heats under start-up mode: opening on-off valve 51, and open first heater 61 and secondary heating mechanism 62,
In, first heater 61 and secondary heating mechanism 62 adjust the first heating according to the target exhaust temperature PI of compressor 1 respectively
The output heating power of device 61 and secondary heating mechanism 62.Heating starting determines to terminate, and closes on-off valve 51 and the second heating
Device 62 determines into normal heating mode.
Under normal heating mode: determining whether the actual exhaust air temperature of compressor 1 is lower than default delivery temperature maximum value.
If it does, if compressor 1 reaches maximum frequency, and the not up to default delivery temperature target value of actual exhaust air temperature, then after
Continuous to open first heater 61, wherein first heater 61 adjusts first heater 61 according to target exhaust temperature PI
The problem of exporting heating power, opened to the maximum value to make up compressor 1, good comfortable sexual experience cannot be but provided.?
The variation that actual exhaust air temperature is constantly determined during this, meets the requirement for not exceeding maximum value.
Default delivery temperature maximum value if more than, and in the case that compressor 1 does not reach maximum frequency, then stop
The heating power of first heater 61 exports, and adjusts heating output by compressor 1 itself.
In adjustment process, if compressor 1 reaches maximum frequency, and the not up to default delivery temperature target of delivery temperature
Value, then continuing starting the first heating equipment, according to target delivery temperature PI adjusts output heating power.Feedback control repeatedly
The heating power of one heating device 61.If under normal heating mode, detect outdoor heat exchanger 3 reach defrost adjusting, then into
Enter following defrost pattern.
Defrost pattern: it needs to need under the mode normally heated into when defrost pattern instruction, increase and open receiving
Secondary heating mechanism 62 can open first heater 61 and secondary heating mechanism 62, first heater 61 and simultaneously
Two heating devices 62 adjust first heater 61 and secondary heating mechanism 62 according to the target exhaust temperature PI of compressor 1 respectively
Output heating power close secondary heating mechanism 62 if detection outdoor heat exchanger 3 reaches and exits defrost condition.Again into
Enter normal heating mode.If heat pump system 100 has refrigeration and heating both of which, heat pump system 100 does not need to switch at this time
Four-way reversing valve.
Other of heat pump system 100 according to an embodiment of the present invention are constituted and are operated for those of ordinary skill in the art
For be all it is known, be not detailed herein.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned term
Schematic representation may not refer to the same embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can be combined in any suitable manner in any one or more of the embodiments or examples.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (15)
1. a kind of heat pump system characterized by comprising
Compressor, the compressor have air entry and exhaust outlet；
Indoor heat exchanger, the indoor heat exchanger have heat-exchange end in the first indoor heat-exchange end and second Room；
Outdoor heat exchanger, the outdoor heat exchanger has the first outdoor heat exchange end and the outer heat-exchange end of second Room, when the air entry
When being connected to one of them in the exhaust outlet with the described first indoor heat-exchange end in the air entry and the exhaust outlet
Another is connected to first outdoor heat exchange end；
Throttling set, the throttling set are located in the second Room between heat-exchange end and the outer heat-exchange end of the second Room；
Bypass flow path, the bypass flow path are connected between first outdoor heat exchange end and the outer heat-exchange end of the second Room, institute
Bypass flow path is stated equipped with the on-off valve for controlling the bypass flow path on-off；
First heater, the first heater are located at the exhaust ports；
Secondary heating mechanism, the secondary heating mechanism are located between the outer heat-exchange end of the second Room and the throttling set.
2. heat pump system according to claim 1, which is characterized in that the exhaust ports are equipped with exhaust refrigerant pipe, described
It is connected between the outer heat-exchange end of second Room and the throttling set by connecting pipeline.
3. heat pump system according to claim 2, which is characterized in that the first heater is to be wrapped in the exhaust
Resistance heating wire on refrigerant pipe or the resistance heating tube being set in outside the exhaust refrigerant pipe,
The secondary heating mechanism is the resistance heating wire being wrapped on the connecting pipeline or is set in outside the connecting pipeline
Resistance heating tube.
4. heat pump system according to claim 2, which is characterized in that the first heater is to be connected on the exhaust
On refrigerant pipe and with resistant heat generating layer the first refrigerant pipeline section,
The secondary heating mechanism is the second refrigerant pipeline section for being connected on the connecting pipeline and having resistant heat generating layer.
5. heat pump system according to claim 4, which is characterized in that the first refrigerant pipeline section and second refrigerant pipe
Section is respectively hollow structure, porous structure or the internal structure with enhanced heat exchange structure.
6. heat pump system according to claim 5, which is characterized in that when the first refrigerant pipeline section and second refrigerant
When pipeline section is respectively porous structure, the first refrigerant pipeline section and the second refrigerant pipeline section are respectively microchannel plate.
7. heat pump system according to claim 6, which is characterized in that described micro- logical when the microchannel plate is one
An at least side surface for guidance tape is equipped with the resistant heat generating layer；
When the microchannel plate is multiple, the resistant heat generating layer is equipped between at least two neighboring microchannel plate.
8. heat pump system according to claim 4, which is characterized in that the first refrigerant pipeline section and second refrigerant pipe
At least one of section is equipped with insulating part between the corresponding resistant heat generating layer.
9. heat pump system according to claim 1 to 8, which is characterized in that the on-off valve is solenoid valve.
10. heat pump system according to claim 1, which is characterized in that the throttling set is electric expansion valve or capillary
Pipe.
11. a kind of control method of heat pump system according to claim 1 to 10, which is characterized in that including with
Lower step:
In the case where heating start-up mode,
Open the on-off valve, the first heater and the secondary heating mechanism；
After heating starting determines, the on-off valve and the secondary heating mechanism are closed, into normal heating mode；
Under normal heating mode,
Judge whether the actual exhaust air temperature for the refrigerant being discharged from the exhaust outlet is lower than default delivery temperature maximum value；
If it is judged that be it is yes,
When the compressor reaches maximum frequency and the actual exhaust air temperature not up to default delivery temperature target value, make institute
It states first heater and is maintained at opening state；
If it is judged that be it is no,
In the case where the compressor does not reach maximum frequency, the first heater is closed；
When detecting that the outdoor heat exchanger reaches defrost condition, into defrost pattern；
Under defrost pattern,
Under the normal heating mode, the first heater and the secondary heating mechanism are opened；
When detect the outdoor heat exchanger reach exit defrost condition when, close the secondary heating mechanism, reenter institute
State normal heating mode；
Wherein, the default delivery temperature target value is less than the default delivery temperature maximum value.
12. the control method of heat pump system according to claim 11, which is characterized in that in the heating start-up mode
Under, the output heating power of the first heater and the secondary heating mechanism is adjusted according to target exhaust temperature.
13. the control method of heat pump system according to claim 11, which is characterized in that in the normal heating mode
Under and the judging result be that when being, the output heating power of the first heater is adjusted according to target exhaust temperature.
14. the control method of heat pump system according to claim 11, which is characterized in that in the normal heating mode
Under and the judging result be it is no when, by the compressor itself adjust heating output.
15. the control method of heat pump system according to claim 11, which is characterized in that under the defrost pattern, press
The output heating power of the first heater and the secondary heating mechanism is adjusted according to target exhaust temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810636060.0A CN108931075A (en) | 2018-06-20 | 2018-06-20 | Heat pump system and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810636060.0A CN108931075A (en) | 2018-06-20 | 2018-06-20 | Heat pump system and its control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108931075A true CN108931075A (en) | 2018-12-04 |
Family
ID=64446103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810636060.0A Pending CN108931075A (en) | 2018-06-20 | 2018-06-20 | Heat pump system and its control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108931075A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110836553A (en) * | 2019-11-13 | 2020-02-25 | 广东美的暖通设备有限公司 | Control method of heat pump system |
| CN110836554A (en) * | 2019-11-13 | 2020-02-25 | 广东美的暖通设备有限公司 | Heat pump system, control method thereof and defrosting control method |
| CN110836555A (en) * | 2019-11-13 | 2020-02-25 | 广东美的暖通设备有限公司 | Control method of heat pump system |
| WO2021093227A1 (en) * | 2019-11-13 | 2021-05-20 | 广东美的暖通设备有限公司 | Heat pump system and anti-dry-heating control method |
| WO2021093228A1 (en) * | 2019-11-13 | 2021-05-20 | 广东美的暖通设备有限公司 | Heat pump system and control method for heat pump system |
| WO2022100749A1 (en) * | 2020-11-16 | 2022-05-19 | 合肥美的电冰箱有限公司 | Refrigeration system for refrigerator and defrosting method for refrigerator |
| WO2023279886A1 (en) * | 2021-07-07 | 2023-01-12 | 青岛海尔空调电子有限公司 | Defrosting method and device for heat pump apparatus, and hot water unit |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001255025A (en) * | 2000-03-10 | 2001-09-21 | Daikin Ind Ltd | Heat pump apparatus |
| CN201688636U (en) * | 2010-05-11 | 2010-12-29 | 广东美的集团芜湖制冷设备有限公司 | Heat pump type air conditioner defroster |
| CN102434915A (en) * | 2011-09-20 | 2012-05-02 | 海信（山东）空调有限公司 | Air-conditioner and control method thereof |
| CN102721115A (en) * | 2012-06-27 | 2012-10-10 | 广东美的电器股份有限公司 | Air conditioner and control method thereof |
| CN202532795U (en) * | 2012-03-09 | 2012-11-14 | 湖南大学 | Spanning type outer auxiliary heating anti-defrosting device |
| CN203534006U (en) * | 2013-09-29 | 2014-04-09 | 美的集团股份有限公司 | Air-conditioning system |
| CN104197549A (en) * | 2014-09-22 | 2014-12-10 | 文力 | Solar heater with evaporator and heat exchanger |
| CN204254755U (en) * | 2014-11-25 | 2015-04-08 | 广东科龙空调器有限公司 | A kind of heat pump air conditioner |
| CN104764092A (en) * | 2015-03-24 | 2015-07-08 | 广东美的制冷设备有限公司 | Air conditioner and outdoor unit control method |
| CN205585718U (en) * | 2016-04-01 | 2016-09-21 | 中山市林特冷链设备有限公司 | Island cabinet with quick defrosting function |
| CN106403345A (en) * | 2016-11-09 | 2017-02-15 | 广东美的暖通设备有限公司 | Heat pump system and control method thereof |
| CN206676353U (en) * | 2017-04-24 | 2017-11-28 | 广东美的制冷设备有限公司 | Air-conditioning system |
| CN107883620A (en) * | 2017-11-09 | 2018-04-06 | 内蒙古尚易环保新能源有限公司 | Air source heat pump and air source heat pump optimization system |
| CN208458308U (en) * | 2018-06-20 | 2019-02-01 | 广东美的暖通设备有限公司 | Heat pump system |
-
2018
- 2018-06-20 CN CN201810636060.0A patent/CN108931075A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001255025A (en) * | 2000-03-10 | 2001-09-21 | Daikin Ind Ltd | Heat pump apparatus |
| CN201688636U (en) * | 2010-05-11 | 2010-12-29 | 广东美的集团芜湖制冷设备有限公司 | Heat pump type air conditioner defroster |
| CN102434915A (en) * | 2011-09-20 | 2012-05-02 | 海信（山东）空调有限公司 | Air-conditioner and control method thereof |
| CN202532795U (en) * | 2012-03-09 | 2012-11-14 | 湖南大学 | Spanning type outer auxiliary heating anti-defrosting device |
| CN102721115A (en) * | 2012-06-27 | 2012-10-10 | 广东美的电器股份有限公司 | Air conditioner and control method thereof |
| CN203534006U (en) * | 2013-09-29 | 2014-04-09 | 美的集团股份有限公司 | Air-conditioning system |
| CN104197549A (en) * | 2014-09-22 | 2014-12-10 | 文力 | Solar heater with evaporator and heat exchanger |
| CN204254755U (en) * | 2014-11-25 | 2015-04-08 | 广东科龙空调器有限公司 | A kind of heat pump air conditioner |
| CN104764092A (en) * | 2015-03-24 | 2015-07-08 | 广东美的制冷设备有限公司 | Air conditioner and outdoor unit control method |
| CN205585718U (en) * | 2016-04-01 | 2016-09-21 | 中山市林特冷链设备有限公司 | Island cabinet with quick defrosting function |
| CN106403345A (en) * | 2016-11-09 | 2017-02-15 | 广东美的暖通设备有限公司 | Heat pump system and control method thereof |
| CN206676353U (en) * | 2017-04-24 | 2017-11-28 | 广东美的制冷设备有限公司 | Air-conditioning system |
| CN107883620A (en) * | 2017-11-09 | 2018-04-06 | 内蒙古尚易环保新能源有限公司 | Air source heat pump and air source heat pump optimization system |
| CN208458308U (en) * | 2018-06-20 | 2019-02-01 | 广东美的暖通设备有限公司 | Heat pump system |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110836553A (en) * | 2019-11-13 | 2020-02-25 | 广东美的暖通设备有限公司 | Control method of heat pump system |
| CN110836554A (en) * | 2019-11-13 | 2020-02-25 | 广东美的暖通设备有限公司 | Heat pump system, control method thereof and defrosting control method |
| CN110836555A (en) * | 2019-11-13 | 2020-02-25 | 广东美的暖通设备有限公司 | Control method of heat pump system |
| WO2021093227A1 (en) * | 2019-11-13 | 2021-05-20 | 广东美的暖通设备有限公司 | Heat pump system and anti-dry-heating control method |
| WO2021093228A1 (en) * | 2019-11-13 | 2021-05-20 | 广东美的暖通设备有限公司 | Heat pump system and control method for heat pump system |
| WO2022100749A1 (en) * | 2020-11-16 | 2022-05-19 | 合肥美的电冰箱有限公司 | Refrigeration system for refrigerator and defrosting method for refrigerator |
| WO2023279886A1 (en) * | 2021-07-07 | 2023-01-12 | 青岛海尔空调电子有限公司 | Defrosting method and device for heat pump apparatus, and hot water unit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108931075A (en) | Heat pump system and its control method | |
| JP3816860B2 (en) | Heat pump air conditioner | |
| EP2295877B1 (en) | Air conditioner | |
| CN107152819A (en) | Air-conditioning device and its control method | |
| CN106839344A (en) | Air-conditioner defrosting control method | |
| CN111076446A (en) | Heat pump air conditioning system and control method thereof | |
| CN108758974A (en) | Intelligent defrosting method and air conditioner | |
| CN113108497B (en) | Heat pump air conditioning system and control method thereof | |
| CN108758815A (en) | Heat transmission equipment and its heat-production control method | |
| CN106288564A (en) | Air conditioning system | |
| CN104197571A (en) | Three-pipe heat recovery multiple-on-line system | |
| CN113108498B (en) | Heat pump air conditioning system and control method thereof | |
| JP2002372320A (en) | Refrigerating device | |
| CN106500213B (en) | Air conditioning system, air conditioner and air conditioning method | |
| CN208458307U (en) | Heat pump system | |
| CN208458308U (en) | Heat pump system | |
| CN105823280A (en) | Defrosting device, defrosting control method, controller and air source heat pump system | |
| CN108826731A (en) | Air conditioner, progress control method and computer readable storage medium | |
| CN208238034U (en) | Air-conditioning system | |
| CN104697245B (en) | Coupling heat pump system | |
| EP1669698B1 (en) | Cooling/heating system | |
| CN206113445U (en) | Air conditioning system | |
| CN205373116U (en) | Heat pump system | |
| CN208458095U (en) | Heat exchange equipment | |
| KR102288427B1 (en) | Method for Defrosting of Air Conditioner for Both Cooling and Heating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181204 |