CN107965944A - A kind of heat pump unit - Google Patents
A kind of heat pump unit Download PDFInfo
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- CN107965944A CN107965944A CN201711407131.1A CN201711407131A CN107965944A CN 107965944 A CN107965944 A CN 107965944A CN 201711407131 A CN201711407131 A CN 201711407131A CN 107965944 A CN107965944 A CN 107965944A
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- exchanging part
- heat
- heat exchanging
- pump unit
- icecap
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- 238000010438 heat treatment Methods 0.000 claims abstract description 52
- 239000003507 refrigerant Substances 0.000 claims abstract description 42
- 238000005057 refrigeration Methods 0.000 claims abstract description 25
- 238000010257 thawing Methods 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 description 12
- 230000009286 beneficial effect Effects 0.000 description 7
- 230000008676 import Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
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
- 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
- F25B47/02—Defrosting cycles
- F25B47/022—Defrosting cycles hot gas defrosting
-
- 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
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Defrosting Systems (AREA)
Abstract
The invention discloses a kind of heat pump unit, which includes the first heat exchanging part as condenser, in a heating mode the second heat exchanging part, expansion valve and the water-supporting disc as evaporator in a heating mode；The heat pump unit further includes the frost removal for being arranged at the second heat exchanging part, and frost removal includes inlet end and an outlet end；The input end of frost removal is communicated in the outlet pipe section of the first heat exchanging part and the outlet pipe section of the second heat exchanging part.The heat pump unit further includes the icecap for being arranged at water-supporting disc, and icecap also includes inlet end and an outlet end；The input end of icecap is also communicated in the outlet pipe section of the first heat exchanging part and the outlet pipe section of the second heat exchanging part.Under heating mode, using the refrigerant flowed out from the first heat exchanging part to frost removal and icecap heat supply, under refrigeration mode, using the refrigerant flowed out from the second heat exchanging part to frost removal and icecap heat supply, make the second heat exchanging part and water-supporting disc thoroughly defrosts ice-breaking, and heat pump unit energy consumption will not be increased.
Description
Technical field
The present invention relates to technical field of heat pumps, and in particular to a kind of heat pump unit.
Background technology
Since heat pump unit has, operating cost is low, operational process energy conservation and environmental protection, the characteristics of efficiency is high, thus is got over
To be more widely applied, for example the air conditioner applied in daily life, air-cooled unit for applying in industrial production etc. belong to
Heat pump unit.
In the course of work of heat pump unit, under heating mode, there are the problem of evaporimeter frosting or even icing and position
The problem of water-supporting disc below evaporator freezes.
Frosting and icing under heating mode are heavily dependent on environment temperature, when environment temperature is down to less than 10 °
When, evaporator body temperature in the state of performance is met would generally be reduced to less than 0 °, the moisture in air is held very much
Easily just condensed on evaporator and water-supporting disc, thus frosting in heating operations and icing is more difficult evades.
For this reason, in the prior art, to ensure the normal operation steady in a long-term of heat pump unit, it can defrost to heat pump unit
Operation.The defrosting means of generally use are in the prior art：After heat pump unit runs a period of time in a heating mode, it is switched to
Defrosting mode (refrigeration mode) runs certain time, switches back into heating mode again afterwards.
In the prior art, the run time of defrosting mode is typically that heat pump unit is set in advance, generally half an hour, is arrived
Up to after run time, no matter whether heat pump unit, which defrosts, finishes, and heat pump unit exits defrosting mode and switches back into heating mode.
Therefore, in the prior art, it is easy to continue to make when appearing in the still remaining more frost layer of evaporator and ice sheet
The state of heat.Under this state, remaining frost layer and ice sheet can be condensed into density bigger rapidly, be more difficult to the frost or ice of removing,
Cause these frost and ice under next defrosting mode still can not be eliminated.So in the past, heat pump unit vicious circle is caused, most
Cause heat pump unit can not realize normal heat-production functions eventually.
Moreover, in the prior art, after defrosting mode end of run, the ice sheet of water-supporting disc also has more remnants.Once support
Ice sheet on water pond, which is assembled to certain thickness, ice sheet, can spread base of evaporator, make base of evaporator with water-supporting disc by ice sheet
Covering, finally can also cause heat pump unit can not realize normal heat-production functions, or even can also trigger frost crack pipe, refrigerant
The problem of leakage etc. is a series of more serious.
And if the ice sheet removing for extending frost layer of the run time up to evaporator of defrosting mode, ice sheet and water-supporting disc is thorough
Heating mode is switched back into during bottom again, and energy consumption can be increased, can also influence the heating of user.
In view of this, a kind of heat pump unit how is developed, more can thoroughly be defrosted and ice-breaking, and substantially will not
The heating of user is influenced, heat pump unit energy consumption will not be increased, be those skilled in the art's technical problem urgently to be resolved hurrily.
The content of the invention
In order to solve the above technical problems, the present invention provides a kind of heat pump unit, the heat pump unit is included in heating mode
It is lower as the first heat exchanging part of condenser, in a heating mode as the second heat exchanging part of evaporator, expansion valve and positioned at institute
State the water-supporting disc below the second heat exchanging part；The heat pump unit further includes the frost removal for being arranged at second heat exchanging part, described
Frost removal includes inlet end and an outlet end；The input end of the frost removal be communicated in first heat exchanging part outlet pipe section and
The outlet pipe section of second heat exchanging part；
Wherein, the outlet pipe section of first heat exchanging part is for the heat-exchange unit is under heating mode,
The outlet pipe section of second heat exchanging part is for the heat-exchange unit is under refrigeration mode.
Alternatively, the frost removal is arranged at the middle part and lower part of second heat exchanging part.
Alternatively, the heat pump unit further includes the icecap for being arranged at the water-supporting disc, the icecap also include into
Mouth end and the port of export；The input end of the icecap is also communicated in the outlet pipe section of first heat exchanging part and described second changes
The outlet pipe section in hot portion；
Wherein, the outlet pipe section of first heat exchanging part is for the heat-exchange unit is under heating mode,
The outlet pipe section of second heat exchanging part is for the heat-exchange unit is under refrigeration mode.
Alternatively, the frost removal and the icecap are arranged independently of each other；Alternatively, the frost removal and the icecap
It is interconnected, and concrete configuration is：The input end of the icecap is communicated in the port of export of the frost removal.
Alternatively, the heat pump unit is additionally provided with solenoid valve, for controlling the frost removal and first heat exchanging part
Outlet pipe section, second heat exchanging part outlet pipe section connection and closing, and the icecap with described first heat exchange
The outlet pipe section in portion, second heat exchanging part outlet pipe section connection and closing.
Alternatively, the heat pump unit further includes the first temperature sensor, for detecting the temperature of second heat exchanging part,
And second temperature sensor, for detecting the temperature of the water-supporting disc.
Alternatively, the heat pump unit further includes controller, preset first temperature value, second temperature in the controller
Value；
The controller judges the second heat exchanging part temperature that first temperature sensor detects less than described the
During one temperature value or when judging that the water-supporting disc temperature that the second temperature sensor detects is less than first temperature value,
Open command is sent to the solenoid valve, during higher than the second temperature value, out code is sent to the solenoid valve；
Wherein, the second temperature value is greater than or equal to first temperature value.
Alternatively, the heat pump unit further includes the 5th check valve, and the 5th check valve is arranged at the frost removal, institute
State on the connecting pipeline between icecap and the first heat exchanging part outlet pipe section, make refrigerant from first heat exchanging part
Outlet pipe section flows to the frost removal, the icecap；
The heat pump unit further includes the 6th check valve, and the 6th check valve is arranged at the frost removal, the ice-breaking
On connecting pipeline between device and the second heat exchanging part outlet pipe section, make refrigerant from the outlet of second heat exchanging part
Frost removal, the icecap described in Duan Liuxiang.
Alternatively, the frost removal and the icecap are heating coil, and the input end of the heating coil is arranged at
Its bottom pipeline section, makes the refrigerant of the inflow heating coil first flow through its bottom pipeline section.
Alternatively, the expansion is flowed to from the refrigerant of the port of export of the frost removal and icecap outflow
Valve.
Heat pump unit provided by the invention, compared to background technology, has the following technical effect that：
Heat supply to frost removal and the heat supply to icecap can a, be combined with defrosting means of the prior art,
That is, it is possible to when heat pump unit switches to defrosting mode (refrigeration mode), it is situated between using the refrigeration flowed out from the second heat exchanging part
Confrontation frost removal and icecap heat supply, compared to background technology, remove equal frost layer and ice sheet, and required time shortens, so as to
So that heat pump unit can switch to heating mode as early as possible, to meet the heating demand of user.
B, the refrigeration flowed out from the first heat exchanging part can be utilized in heat pump unit from after defrosting mode switches to heating mode
Medium continues to frost removal and icecap heat supply, until frost layer and ice sheet are thoroughly removed, terminates so as to evade defrosting mode
Frost layer and ice sheet removing are not thorough the frost layer for causing not to be eliminated and ice sheet and are condensed into the frost layer for being more difficult to remove and ice sheet rapidly afterwards
Risk, beneficial to the operation steady in a long-term of heat pump unit.
C, make frost removal and icecap make full use of in a heating mode from the refrigerant of the first heat exchanging part outflow and
The waste heat of the refrigerant flowed out under refrigeration mode from the second heat exchanging part, had both enable frost removal and icecap obtain enough heat
Amount, and the efficiency of heat pump unit is not interfered with, and then the energy consumption of heat pump unit can be saved；And, it is only necessary to set corresponding
Heat supply function can be achieved in connecting pipeline, simplifies beneficial to the structure of heat pump unit, and then the operation that can improve heat pump unit can
By property.
D, the refrigerant from frost removal and icecap outflow is made to flow to expansion valve, and the part refrigerant self-expanding valve
The first heat exchanging part or the second heat exchanging part as evaporator are flowed to, due to the refrigerant temperature from frost removal and icecap outflow
It is relatively low, it is more easy to absorb atmospheric heat, so as to the more fully vaporization in evaporator, beneficial to the efficiency for improving heat pump unit.
Brief description of the drawings
Fig. 1 is the schematic diagram of heat pump unit first embodiment provided by the invention；
Fig. 2 is the schematic diagram of heat pump unit second embodiment provided by the invention；
Fig. 3 is the schematic diagram of heat pump unit 3rd embodiment provided by the invention.
The reference numerals are as follows in Fig. 1-Fig. 3：
1 compressor, 2 heat regenerators, 3 four-way valves, 4 first heat exchanging part, 5 first check valves, 6 devices for drying and filtering, 7 liquid storages
Device, 8 evaporators, 9 second check valves, 10 expansion valves, 11 the 3rd check valves, 12 gas-liquid separators, 13 the 4th check valves, 14 electromagnetism
Valve, 15 frost removals, 16 icecaps, 17 the 5th check valves, 18 the 6th check valves.
Embodiment
It is below in conjunction with the accompanying drawings and specific real in order to make those skilled in the art more fully understand technical scheme
Applying mode, the present invention is described in further detail.
- Fig. 3 is please referred to Fig.1, Fig. 1 is the schematic diagram of heat pump unit first embodiment provided by the invention；Fig. 2 is the present invention
The schematic diagram of the heat pump unit second embodiment of offer；Fig. 3 is the schematic diagram of heat pump unit 3rd embodiment provided by the invention.
As shown in Figs. 1-3, heat pump unit is commonly configured with compressor 1, heat regenerator 2, four-way valve 3, the first heat exchanging part 4,
First check valve 5, device for drying and filtering 6, reservoir 7, the second heat exchanging part 8, the second check valve 9, expansion valve 10, the 3rd check valve
11,12 and the 4th check valve 13 of gas-liquid separator.Moreover, the lower section of the second heat exchanging part 8 is configured with water-supporting disc.
Wherein, in compressor 1, refrigerant is changed into high temperature, high pressure, steam-like by low temperature, low pressure, steam-like.
Wherein, heat regenerator 2 is apolegamy component.
Wherein, four-way valve 3 is used for the flow direction for changing refrigerant, makes heat pump unit in heating and refrigeration mode (defrosting mould
Formula) between switch.
Wherein, in expansion valve 10, refrigerant through throttling action, by high temperature, high pressure, liquid be changed into low temperature, low pressure,
Liquid.
Wherein, in a heating mode, the first heat exchanging part 4 is used as condenser to heat pump unit, and wherein, refrigerant is with flowing through
Condensed after the water heat exchange of condenser, high temperature, high pressure, liquid are changed into by high temperature, high pressure, steam-like；Second heat exchanging part 8 is as steaming
Device is sent out, wherein, refrigerant absorbs heat from air, is changed into low temperature, low pressure, steam-like by low temperature, low pressure, liquid.
At this time, the flow path of refrigerant is as shown in dotted line whole rocket head in Fig. 1-2：1 → heat regenerator of compressor 2 → tetra-
3 → the first heat exchanging part of port valve, 4 → the first 6 → expansion valve of check valve 5 → reservoir, 7 → device for drying and filtering, 10 → the second check valve 9
→ the second 8 → gas-liquid separator of heat exchanging part, 12 → compressor 1.
Wherein, for heat pump unit under refrigeration mode and defrosting mode, the first heat exchanging part 4 is used as evaporator, wherein, refrigeration
Medium absorbs heat from air, is changed into low temperature, low pressure, steam-like by low temperature, low pressure, liquid；Second heat exchanging part 8 is as cold
Condenser, wherein, refrigerant and flow through condenser water heat exchange after condense, by high temperature, high pressure, steam-like be changed into high temperature,
High pressure, liquid.
At this time, the flow path of refrigerant is as shown in solid line whole rocket head in Fig. 1-2：1 → heat regenerator of compressor 2 → tetra-
The 10 → the 4th check valve of the 8 → the 3rd 6 → expansion valve of check valve 11 → reservoir, 7 → device for drying and filtering of 3 → the second heat exchanging part of port valve
13 → the first 4 → gas-liquid separator of heat exchanging part, 12 → compressors 1.
It should be appreciated that above-mentioned high temperature, high pressure, low temperature, low pressure are all opposite concepts, i.e. relatively-high temperature, relatively high
Pressure, relative low temperature, relatively low pressure.
It is noted that the outlet pipe section of the first heat exchanging part 4 as described herein is to be in system for the heat-exchange unit
For under heat pattern, the outlet pipe section of second heat exchanging part 8 is to be in for the heat-exchange unit under refrigeration mode
For.It should be appreciated that the outlet pipe section of the first heat exchanging part 4 is changed into the first heat exchanging part 4 in cooling mode under heating mode
Import pipeline section, the outlet pipe section of the second heat exchanging part 8 is changed into the import of the second heat exchanging part 8 in a heating mode under refrigeration mode
Pipeline section.
As shown in Figs. 1-3, heat pump unit provided by the invention is also configured with frost removal 15, and the frost removal 15 is arranged at
Two heat exchanging part 8, and can specifically be arranged at the middle part and lower part of the second heat exchanging part 8.
Also, the frost removal 15 includes inlet end and an outlet end；The input end of the frost removal 15 by connecting accordingly
Siphunculus road is communicated in the outlet pipe section of first heat exchanging part 4 and the outlet pipe section of second heat exchanging part 8.
Also, in the specific embodiment shown in Fig. 1-3, the port of export of frost removal 15 is communicated in by corresponding connecting line
The import pipeline section of reservoir 7.
Under such a configuration, as shown in half arrow of solid line in figure, when heat pump unit is in heating mode, frost removal 15 is flowed to
The flow path of refrigerant be：Input end → frost removal 15 of outlet pipe section → frost removal 15 of first heat exchanging part 4 goes out
The import pipeline section of mouth end → reservoir 7.When heat pump unit is in refrigeration mode, the flowing of the refrigerant of frost removal 15 is flowed to
Path is：The port of export → reservoir 7 of input end → frost removal 15 of outlet pipe section → frost removal 15 of second heat exchanging part 8 into
Mouth pipeline section.
Frost removal 15 is arranged at the middle part of the second heat exchanging part 8 and lower part is due to second to change what deserves to be explained is above-mentioned
Hot portion 8 is usually nearly vertical arrangement, and during defrosting, white water and frozen water can flow down, and causes in the middle part of the second heat exchanging part 8 and lower part
Frost layer and the density of ice sheet are higher than the frost layer of its upper part and the density of ice sheet.It is of course also possible to according to practical application request, will remove
White device 15 is arranged on the top of the second heat exchanging part 8 in the lump.
Further, as shown in Figs. 1-3, heat pump unit provided by the invention can also configure icecap 16, the ice-breaking
Device 16 is arranged at above-mentioned water-supporting disc.
Also, the icecap 16 also includes inlet end and an outlet end.The input end of the icecap 16 is also communicated in institute
State the outlet pipe section of the first heat exchanging part 4 and the outlet pipe section of second heat exchanging part 8.
Also, icecap 16 and frost removal 15 can have a variety of different arrangements, as shown in the figure, illustrating two kinds not
Same arrangement.
In first embodiment and second embodiment shown in Fig. 1-2, frost removal 15 and icecap 16 are to arrange independently of each other
, the port of export of icecap 16 is communicated in the import pipeline section of reservoir 7 by corresponding connecting line.Under such a arrangement, such as scheme
Shown in middle half arrow of solid line, frost removal 15 and ice-breaking are flowed under refrigeration mode and under heating mode from the outlet pipe section of compressor 1
The flow path of the refrigerant of device 16 is divided into two, and one is：The outlet pipe section (corresponding heating mode) of first heat exchanging part 4
Or second heat exchanging part 8 outlet pipe section (corresponding refrigeration mode) → frost removal 15 input end → frost removal 15 the port of export → storage
Liquid device 7, another is：The outlet pipe section (corresponding heating mode) or the outlet pipe section of the second heat exchanging part 8 of first heat exchanging part 4 are (right
Answer refrigeration mode) the import pipeline section of the port of export → reservoir 7 of input end → icecap 16 of → icecap 16.
In 3rd embodiment shown in Fig. 3, frost removal 15 and icecap 16 are interconnected, and concrete configuration is：Remove
The input end of white device 15 is communicated in the port of export of icecap 16.Under such a arrangement, as shown in half arrow of solid line in figure, from compressor
The flow path that 1 outlet pipe section flows to the refrigerant of frost removal 15 and icecap 16 is：The outlet pipe section of first heat exchanging part 4
Input end → the icecap of (corresponding heating mode) or the outlet pipe section of the second heat exchanging part 8 (corresponding refrigeration mode) → icecap 16
The import pipeline section of the port of export → reservoir 7 of input end → frost removal 15 of 16 port of export → frost removal 15.
As the above analysis, heat pump unit provided by the invention, can make heat supply to frost removal 15 and to icecap
16 heat supply is combined with defrosting means of the prior art, that is to say, that can switch to defrosting mode (system in heat pump unit
Chill formula) when, using from the refrigerant that the second heat exchanging part 8 flows out to 16 heat supply of frost removal 15 and icecap, compared to background skill
Art, removes equal frost layer and ice sheet, required time shortens, so as to so that heat pump unit can switch to heating mould as early as possible
Formula, to meet the heating demand of user.
And it is possible in heat pump unit from after defrosting mode switches to heating mode, utilize what is flowed out from the first heat exchanging part 4
Refrigerant continues to 16 heat supply of frost removal 15 and icecap, until frost layer and ice sheet are thoroughly removed, so as to evade defrosting
Frost layer and ice sheet removing are not thorough the frost layer for causing not to be eliminated and ice sheet and are condensed into the frost for being more difficult to remove rapidly after pattern
The risk of layer and ice sheet, beneficial to the operation steady in a long-term of heat pump unit.
Also, frost removal 15 and icecap 16 is set to make full use of in a heating mode from the refrigeration of the first heat exchanging part 4 outflow
The waste heat of medium and the refrigerant flowed out in cooling mode from the second heat exchanging part 8, had both enable frost removal 15 and icecap 16
Enough heats are enough obtained, and do not interfere with the efficiency of heat pump unit, and then the energy consumption of heat pump unit can be saved；Also, only
Need to set corresponding connecting pipeline that heat supply function can be achieved, simplify beneficial to the structure of heat pump unit, and then heat can be improved
The operational reliability of pump assembly.
Moreover, the refrigerant from frost removal 15 and the outflow of icecap 16 is flowed to expansion valve 10, in cooling mode, should
Part refrigerant self-expanding valve 10 flows to the first heat exchanging part 4 as evaporator, in a heating mode, the part refrigerant
Self-expanding valve 10 flows to the second heat exchanging part 8 as evaporator, due to the refrigerant from frost removal 15 and the outflow of icecap 16
Temperature is relatively low, is more easy to absorb atmospheric heat, so as to the more fully vaporization in evaporator, beneficial to the effect for improving heat pump unit
Rate.
With continued reference to Fig. 1-3.
Specifically, above-mentioned frost removal 15 and icecap 16 all can be heating coil, more specifically, above-mentioned frost removal 15 can
To be arranged to the higher finned type heating coil of heat exchange efficiency.
Also, the input end of the heating coil can be arranged at its bottom pipeline section, make the system of the inflow heating coil
Cold medium first flows through its bottom pipeline section, so set, can further make the higher refrigerant of temperature preferentially flow through frost layer or
The higher position of ice sheet density, uniform beneficial to frost layer are removed.
With continued reference to Fig. 1-3.
Heat pump unit provided by the invention is also configured with valve member, for controlling the frost removal 15 and first heat exchanging part
4 outlet pipe section, second heat exchanging part 8 outlet pipe section connection and closing, and the icecap 16 and described first
The outlet pipe section of heat exchanging part 4, second heat exchanging part 8 outlet pipe section connection and closing.Preferably, the valve member is selected just
In controlling and respond rapid solenoid valve 14.
Specifically, in first embodiment and 3rd embodiment as shown in figures 1 and 3, when the solenoid valve 14 is closed,
Frost removal 15 is mutually closed with the outlet pipe section of first heat exchanging part 4, the outlet pipe section of second heat exchanging part 8, also, broken
Ice device 16 is also mutually closed with the outlet pipe section of first heat exchanging part 4, the outlet pipe section of second heat exchanging part 8.At this time, nothing
By heating mode or refrigeration mode, refrigerant can not carry out heat supply to frost removal 15 and icecap 16.
When the solenoid valve 14 is opened, the outlet pipe section of frost removal 15 and first heat exchanging part 4, second heat exchange
The outlet pipe section in portion 8 is interconnected, also, icecap 16 and the outlet pipe section of first heat exchanging part 4, second heat exchanging part
8 outlet pipe section is also interconnected.At this time, no matter heating mode or refrigeration mode, refrigerant can be to frost removal 15
Heat supply is carried out with icecap 16.
Specifically, second embodiment as shown in Figure 2, setting position and the first embodiment and the 3rd of solenoid valve 14 are implemented
Example is different.In this embodiment, solenoid valve 14 only controls frost removal 15, icecap 16 to go out with first heat exchanging part 4
Connection and closing between mouthful pipeline section, without control frost removal 15, icecap 16 and second heat exchanging part 8 outlet pipe section it
Between connection and closing.That is, no matter solenoid valve 14 is closed or opened, frost removal 15, icecap 16 and described second
The outlet pipe section of heat exchanging part 8 is interconnected all the time.
It is arranged such under state, as long as heat pump unit is in refrigeration mode, then no matter solenoid valve 14 is closed or opened, from
The refrigerant homomergic flow of second heat exchanging part 8 outflow carries out heat supply to frost removal 15 and icecap 16 to both.Thus freezing
The cooling extent of refrigerant can be increased under pattern, so as to improve the condensation effect of refrigerant, and then improve heat pump
The efficiency of unit.
Further, the heat pump unit be configured with for detect 8 temperature of the second heat exchanging part the first temperature sensor and
The second temperature sensor of water-supporting disc temperature is detected, whether this is to frost removal 15 and icecap to demarcate by the detection to temperature
16 heat supplies.
Lead to specifically, the heat pump unit is also configured with the first temperature sensor, second temperature sensor and solenoid valve 14
The controller of letter, preset first temperature value and second temperature value in the controller.
When controller judges that the temperature for the second heat exchanging part that the first temperature sensor detects is less than above-mentioned first temperature value
When and when judging that the water-supporting disc temperature that second temperature sensor detects is less than above-mentioned first temperature value, sent to solenoid valve 14
Open command, with to 16 heat supply of frost removal 15 and icecap.
When controller judges that the temperature for the second heat exchanging part that the first temperature sensor detects is higher than second temperature value with
And when judging that the water-supporting disc temperature that second temperature sensor detects is higher than second temperature value, send and close to corresponding solenoid valve 14
Instruction is closed, is stopped to 16 heat supply of frost removal 15 and icecap.
Wherein, the second temperature value is greater than or equal to first temperature value, specifically, can by the first temperature value and
Second temperature value is disposed as 0 DEG C.
It is arranged such under state, no matter heat pump unit is in heating mode or defrosting mode (refrigeration mode), as long as " the
The temperature for the second heat exchanging part that one temperature sensor detects is detected less than above-mentioned second temperature value and second temperature sensor
The water-supporting disc temperature arrived is less than above-mentioned second temperature value ", can opens solenoid valve 14, the confession to frost removal 15 and icecap 16
Heat.
If that is, determining when to exit defrosting mode still to continue in background technology " certain time is preset, is arrived
Switch back into heating mode after up to the time " time calibrating mode, after heat pump unit switches back into heating mode from defrosting mode, such as
The temperature of the second heat exchanging part of fruit 8 and the temperature of water-supporting disc are not reaching to second temperature value, then solenoid valve 14 will continue on, with
Continue to 16 heat supply of frost removal 15 and icecap, until the temperature of the second heat exchanging part 8 and the temperature of water-supporting disc reach second temperature
During value (i.e. thoroughly defrosting, the state of ice-breaking), solenoid valve 14 can be just closed, to stop the confession to frost removal 15 and icecap 16
Heat, thereby guarantees that the frost layer and ice sheet of the second heat exchanging part 8 and water-supporting disc can be removed thoroughly.
With continued reference to Fig. 1-2.
Further, the heat pump unit configures the 5th check valve 17, and the 5th check valve 17 is arranged at frost removal
15th, on the connecting pipeline between 16 and first heat exchanging part of icecap, 4 outlet pipe section, refrigerant is allow from the first heat exchanging part 4
Outlet pipe section flow to frost removal 15, icecap 16, and cannot be back to through the connecting pipeline from frost removal 15, icecap 16
One heat exchanging part 4.
Also, the heat pump unit also configures the 6th check valve 18, the 6th check valve 18 is arranged at frost removal 15, breaks
On connecting pipeline between 16 and second heat exchanging part of ice device, 8 outlet pipe section, allow refrigerant from the outlet of the second heat exchanging part 8
Pipeline section flows to frost removal 15, icecap 16, and cannot be back to the second heat exchange through the connecting pipeline from frost removal 15, icecap 16
Portion 8.
Heat pump unit provided by the present invention is described in detail above.Specific case used herein is to this hair
Bright principle and embodiment is set forth, and the explanation that the above is implemented is only intended to help the method and its core that understand the present invention
Thought is thought.It should be pointed out that for those skilled in the art, without departing from the principle of the present invention,
Some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into the protection domain of the claims in the present invention
It is interior.
Claims (10)
1. a kind of heat pump unit, the heat pump unit include in a heating mode the first heat exchanging part (4) as condenser, making
As the second heat exchanging part (8) of evaporator, expansion valve (10) and the support below second heat exchanging part (8) under heat pattern
Water pond, it is characterised in that the heat pump unit further includes the frost removal (15) for being arranged at second heat exchanging part (8), described to remove
White device (15) includes inlet end and an outlet end；The input end of the frost removal (15) is communicated in going out for the first heat exchanging part (4)
The outlet pipe section of mouth pipeline section and second heat exchanging part (8)；
Wherein, the outlet pipe section of first heat exchanging part (4) is for the heat-exchange unit is under heating mode, institute
The outlet pipe section of the second heat exchanging part (8) is stated for the heat-exchange unit is under refrigeration mode.
2. heat pump unit according to claim 1, it is characterised in that the frost removal (15) is arranged at second heat exchange
The middle part and lower part in portion (8).
3. heat pump unit according to claim 1, it is characterised in that the heat pump unit, which further includes, is arranged at the support water
The icecap (16) of disk, the icecap (16) also include inlet end and an outlet end；The input end of the icecap (16) also connects
Pass through the outlet pipe section of first heat exchanging part (4) and the outlet pipe section of second heat exchanging part (8)；
Wherein, the outlet pipe section of first heat exchanging part (4) is for the heat-exchange unit is under heating mode, institute
The outlet pipe section of the second heat exchanging part (8) is stated for the heat-exchange unit is under refrigeration mode.
4. heat pump unit according to claim 3, it is characterised in that the frost removal (15) and the icecap (16) phase
Mutually independent arrangement；Alternatively, the frost removal (15) and the icecap (16) are interconnected, and concrete configuration is：The ice-breaking
The input end of device (16) is communicated in the port of export of the frost removal (15).
5. heat pump unit according to claim 3, it is characterised in that the heat pump unit is additionally provided with solenoid valve (14),
For control the outlet pipe section of the frost removal (15) and first heat exchanging part (4), second heat exchanging part (8) outlet
The connection and closing of section, and the icecap (16) and the outlet pipe section of first heat exchanging part (4), second heat exchanging part
(8) connection and closing of outlet pipe section.
6. heat pump unit according to claim 5, it is characterised in that the heat pump unit further includes the first temperature sensing
Device, for detecting the temperature of second heat exchanging part (8), and second temperature sensor, for detecting the temperature of the water-supporting disc
Degree.
7. heat pump unit according to claim 6, it is characterised in that the heat pump unit further includes controller, the control
Preset first temperature value, second temperature value in device processed；
The controller judges that the second heat exchanging part (8) temperature that first temperature sensor detects is less than described first
During temperature value or when judging that the water-supporting disc temperature that the second temperature sensor detects is less than first temperature value, to
The solenoid valve (14) sends open command, and during higher than the second temperature value, out code is sent to the solenoid valve (14)；
Wherein, the second temperature value is greater than or equal to first temperature value.
8. heat pump unit according to claim 3, it is characterised in that the heat pump unit further includes the 5th check valve
(17), the 5th check valve (17) is arranged at the frost removal (15), the icecap (16) and first heat exchanging part (4)
On connecting pipeline between outlet pipe section, the outlet pipe section of refrigerant from first heat exchanging part (4) is set to flow to the defrosting
Device (15), the icecap (16)；
The heat pump unit further includes the 6th check valve (18), the 6th check valve (18) be arranged at the frost removal (15),
On connecting pipeline between the icecap (16) and second heat exchanging part (8) outlet pipe section, make refrigerant from described
The outlet pipe section of two heat exchanging part (8) flows to the frost removal (15), the icecap (16).
9. according to any one of the claim 3-8 heat pump units, it is characterised in that the frost removal (15) and the icecap
(16) it is heating coil, the input end of the heating coil is arranged at its bottom pipeline section, makes the system of the inflow heating coil
Cold medium first flows through its bottom pipeline section.
10. according to claim 3-8 any one of them heat pump units, it is characterised in that from the frost removal (15) and described
The refrigerant of the port of export outflow of icecap (16) flows to the expansion valve (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711407131.1A CN107965944A (en) | 2017-12-22 | 2017-12-22 | A kind of heat pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711407131.1A CN107965944A (en) | 2017-12-22 | 2017-12-22 | A kind of heat pump unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107965944A true CN107965944A (en) | 2018-04-27 |
Family
ID=61995843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711407131.1A Pending CN107965944A (en) | 2017-12-22 | 2017-12-22 | A kind of heat pump unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107965944A (en) |
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| EP1876402A2 (en) * | 2006-07-05 | 2008-01-09 | Markus Kroll | Heat pump with temperature control unit |
| CN101113859A (en) * | 2006-07-28 | 2008-01-30 | 海尔集团公司 | Refrigerator evaporator defrost method and defrosting device using the method |
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| CN110411053B (en) * | 2019-07-04 | 2021-10-26 | 夏汉林 | Low-temperature enthalpy increasing system of heat pump compressor |
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