CN207797471U - A kind of air source heat pump defrosting system - Google Patents
A kind of air source heat pump defrosting system Download PDFInfo
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- CN207797471U CN207797471U CN201820141265.7U CN201820141265U CN207797471U CN 207797471 U CN207797471 U CN 207797471U CN 201820141265 U CN201820141265 U CN 201820141265U CN 207797471 U CN207797471 U CN 207797471U
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- valve
- way valve
- solenoid valve
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- heat pump
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Abstract
The utility model discloses a kind of air source heat pump defrosting systems, including outdoor unit, indoor unit, phase-change accumulation energy device, compressor, four-way valve and restricting element, the ports A of four-way valve pass through the pipeline connection indoor unit equipped with the first solenoid valve, and pass through the pipeline connection phase-change accumulation energy device equipped with second solenoid valve, the air entry that the ports B of four-way valve pass through pipeline connection compressor, the C-terminal mouth of four-way valve passes through pipeline connection outdoor unit, the exhaust outlet that the ports D of four-way valve pass through pipeline connection compressor, indoor unit and phase-change accumulation energy device pass through the pipeline connection restricting element equipped with check valve and third solenoid valve respectively, restricting element is connected to by pipeline with outdoor unit；Wherein, the entrance of check valve is connected to indoor unit, and the outlet of check valve is connected to restricting element.The structure of the air source heat pump defrosting system is simple, and the waste heat that can efficiently use heating cycle defrosts.
Description
Technical field
The utility model is related to Defrost technical fields, more specifically to a kind of air source heat pump defrosting system.
Background technology
Heat pump as it is a kind of can be by the heat energy transfer of low level heat energy to the device of high-order heat source, in heating recycle system
It is used widely.
In cold winter, generally use net for air-source heat pump units is to indoor heating.However, conventionally, as
The temperature of winter outdoor environment is usually relatively low, when the coil temperature of outdoor unit is less than the dew-point temperature of outdoor air, outdoor unit
Coil pipe would generally frosting.A large amount of frost accumulates on outdoor unit coil pipe, will weaken the heat transfer property of evaporator significantly, together
When, the air flowing between outdoor unit coil pipe is hindered, wind turbine energy loss is increased.Therefore, in order to improve heat pump for thermal effect
Rate needs in time to defrost to heat pump.
However, the existing usual structure of heat pump defrosting system is more complex, and energy consumption is larger.
It is current this field skill in conclusion how to provide a kind of simple in structure and energy consumption lower heat pump defrosting system
Art personnel's urgent problem to be solved.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of air source heat pump defrosting system, which removes
The circulation loop of defrosting system is simple in structure, can effectively be defrosted using the waste heat of heating cycle, therefore, it is possible to reach simultaneously
Defrosting and energy-efficient purpose, and cost is relatively low.
To achieve the goals above, the utility model provides the following technical solutions：
A kind of air source heat pump defrosting system, including outdoor unit, indoor unit, phase-change accumulation energy device, compressor, four-way valve and section
Fluid element, the ports A of the four-way valve are by indoor unit described in the pipeline connection equipped with the first solenoid valve and by being equipped with second
Phase-change accumulation energy device described in the pipeline connection of solenoid valve, the air-breathing that the ports B of the four-way valve pass through compressor described in pipeline connection
Mouthful, by outdoor unit described in pipeline connection, the ports D of the four-way valve pass through described in pipeline connection the C-terminal mouth of the four-way valve
The exhaust outlet of compressor, the indoor unit and the phase-change accumulation energy device pass through the pipeline equipped with check valve and third solenoid valve respectively
It is connected to the restricting element, the restricting element is connected to by pipeline with the outdoor unit；Wherein, the entrance of the check valve with
The indoor unit connection, the outlet of the check valve is connected to the restricting element.
Preferably, further include the first temperature sensor for incuding indoor temperature and with the first temperature sensor phase
Controller even, the controller is connected with the second solenoid valve and the third solenoid valve respectively, when the indoor temperature
When reaching preset temperature value, the controller can control the second solenoid valve and the third solenoid valve is opened.
Preferably, the coil pipe of the outdoor unit is equipped with second temperature sensor for incuding coil temperature, and described the
Two temperature sensors are connected with the controller, and the controller is also connected with the four-way valve and first solenoid valve, when
When the coil temperature reaches default defrosting temperature value, the controller can control first solenoid valve and disconnect, and control
The ports A of the four-way valve are connected to the ports B and the C-terminal mouth is connected to the ports D.
Preferably, the phase-change material of the phase-change accumulation energy device includes paraffin, fused salt or hydrated salt.
Preferably, the pipeline for being connected to the ports D of the four-way valve and the exhaust outlet of the compressor is equipped with high voltage protective
Switch.
Preferably, the restricting element is throttle valve or capillary.
Air source heat pump defrosting system provided by the utility model, including heating circulation pattern, heating cycle and energy storage follow
Ring paralleling model and defrosting mode, when need for indoor heating when, heating circulation pattern run first, at this moment, the ends A of four-way valve
Mouth is connected to the ports D, and the ports B are connected to C-terminal mouth, and the first solenoid valve is opened, compressor, indoor unit, restricting element and outdoor unit
It passes sequentially through pipeline connection and forms heating circulation loop, for being indoor heating；After heating circulation pattern operation a period of time, when
When indoor temperature reaches preset temperature value, the first solenoid valve is closed, and controls second solenoid valve and third solenoid valve opening, compression
Machine, phase-change accumulation energy device, restricting element and outdoor unit pass sequentially through pipeline connection and form energy storage circulation loop, energy storage circulation pattern fortune
Row gets up for heat storage extra in recycling heating, in order to be removed to the coil pipe of outdoor unit when needing defrosting
Frost；After indoor temperature is reduced to certain temperature, the first solenoid valve can be opened again, heating cycle and energy storage is made to recycle simultaneously
Work；When the coil pipe of outdoor unit needs defrosting, the first solenoid valve is closed, and heating circulation loop is cut off, and check valve can be kept away
Exempt from refrigerant and is back to indoor unit, meanwhile, the ports A for controlling four-way valve are connected to the ports B, and C-terminal mouth is connected to the ports D, are realized
The commutation of tank circuit, defrosting mode operation, defrosts for the coil pipe to outdoor unit.The air source heat pump defrosting system
Circulation loop is simple in structure, can effectively be defrosted using the waste heat of heating cycle, therefore, it is possible to reach defrosting and section simultaneously
The purpose of energy, and cost is relatively low.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is the structural schematic diagram of air source heat pump defrosting system specific embodiment provided by the utility model.
Reference numeral in Fig. 1 is as follows：
1 it is outdoor unit, 2 be indoor unit, 3 be phase-change accumulation energy device, 4 be compressor, 5 be four-way valve, 6 be restricting element, 7 is
Check valve, 8 be third solenoid valve, 9 be second solenoid valve, 10 be the first solenoid valve.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
The core of the utility model is to provide a kind of air source heat pump defrosting system, which follows
Loop back path is simple in structure, can effectively using heating cycle waste heat defrost, therefore, it is possible to simultaneously reach defrosting and it is energy saving
Purpose, and cost is relatively low.
Referring to FIG. 1, for the structural representation of air source heat pump defrosting system specific embodiment provided by the utility model
Figure.
Air source heat pump defrosting system provided by the present application, including outdoor unit 1, indoor unit 2, phase-change accumulation energy device 3, compressor
4, the ports A of four-way valve 5 and restricting element 6, four-way valve 5 by the pipeline connection indoor unit 2 equipped with the first solenoid valve 10 and lead to
Cross the pipeline connection phase-change accumulation energy device 3 equipped with second solenoid valve 9, the suction that the ports B of four-way valve 5 pass through pipeline connection compressor 4
Gas port, the C-terminal mouth of four-way valve 5 is by pipeline connection outdoor unit 1, row that the ports D of four-way valve 5 pass through pipeline connection compressor 4
Gas port, indoor unit 2 and phase-change accumulation energy device 3 respectively by the pipeline connection restricting element 6 equipped with check valve 7 and third solenoid valve 8,
Restricting element 6 is connected to by pipeline with outdoor unit 1；Wherein, the entrance of check valve 7 is connected to indoor unit 2, the outlet of check valve 7
It is connected to restricting element 6.
It should be noted that air source heat pump defrosting system provided by the present application mainly utilizes phase-change accumulation energy device 3 to store
Waste heat in heating cycle defrosts to outdoor unit 1.
It is understood that the outdoor unit 1 in the application includes outdoor unit coil pipe, the evaporator in being recycled as heating
Heat is provided for the gasification of liquid refrigerant.Indoor unit 2 includes heat exchanger, and the heat released when gaseous refrigerant is condensed leads to
It crosses gas exchanges and is transferred to interior, indoor temperature is made to increase, be reached for the purpose of indoor heating.Phase-change accumulation energy device 3 is used as energy storage
The heat storage that element gaseous refrigerant extra in recycling heating is released when condensing, to be removed to outdoor unit 1
Frost.Compressor 4 is used as powered drive element, and low-pressure gaseous refrigerant is become high-pressure gaseous refrigerant.Restricting element 6 is for dropping
The pressure of low liquid refrigerant.The steering in circuit when four-way valve 5 is used to heat cycle and defrosting cyclic switching.
Specifically, air source heat pump defrosting system provided by the present application includes heating circulation pattern, energy storage circulation pattern, system
Thermal cycle and energy storage cycle paralleling model and defrosting mode.
When heating circulation pattern operation, the ports A of four-way valve 5 are connected to the ports D, and the ports B are connected to C-terminal mouth, the first electricity
Magnet valve 10 is opened.That is, through 4 compressed high-pressure gaseous refrigerant of compressor by four-way valve 5 and the first solenoid valve 10 first
By indoor unit 2, and condensation heat in machine 2 indoors, then outdoor unit 1, and the gas in outdoor unit 1 are reached by restricting element 6
Change heat absorption, eventually re-enters the heating that compressor 4 carries out next time and recycle, the purpose to indoor heating is realized with this.
When energy storage circulation pattern is run, the ports A of four-way valve 5 are connected to the ports D, and the ports B are connected to C-terminal mouth, the first electricity
Magnet valve 10 is closed, and second solenoid valve 9 and third solenoid valve 8 are opened.That is, heating circulation loop is to disconnect at this time, it is compressed
4 compressed high-pressure gaseous refrigerant of machine enters phase-change accumulation energy device 3 by four-way valve 5, and condenses and put in phase-change accumulation energy device 3
Heat condenses the heat storage of releasing in the phase-change material of phase-change accumulation energy device 3 in phase-change accumulation energy device 3.High pressure liquid after condensation
State refrigerant enters outdoor unit 1 after being depressured by restricting element 6, and gasification heat absorption, eventually re-enters compressor in outdoor unit 1
4 carry out energy storage cycle next time, and the purpose of energy storage is realized with this.
When heating cycle and energy storage cycle paralleling model operation, the ports A of four-way valve 5 are connected to the ports D, the ports B and C-terminal
Mouth connection, the first solenoid valve 10, second solenoid valve 9 and third solenoid valve 8 are opened.That is, through 4 compressed height of compressor
Pressure gaseous refrigerant is further separated into indoor unit 2 and phase-change accumulation energy device 3 by four-way valve 5, and distinguishes machine 2 and phase-change accumulation energy indoors
Condensation heat in device 3, condense the heat of releasing in machine 2 indoors makes indoor temperature increase by gas exchanges, in phase-change accumulation energy
The heat storage of releasing is condensed in device 3 in the phase-change material of phase-change accumulation energy device 3.High pressure liquid refrigerant after condensation passes through section
Fluid element 6 enters outdoor unit 1 after being depressured, and the gasification heat absorption in outdoor unit 1 eventually re-enters compressor 4 and carries out next time
Heating cycle and energy storage cycle, the purpose to indoor heating and energy storage is realized with this.
When defrosting mode is run, the ports A of four-way valve 5 are connected to the ports B, and C-terminal mouth is connected to the ports D, the first solenoid valve
10 disconnect.That is, heating circulation loop is to disconnect at this time, pass through four-way through 4 compressed high-pressure gaseous refrigerant of compressor
Valve 5 first passes around outdoor unit 1, and the condensation heat in outdoor unit 1, then by the arrival phase-change accumulation energy of restricting element 6 device 3, and
Gasification heat absorption in phase-change accumulation energy device 3 is eventually re-entered the defrosting that compressor 4 carries out next time and recycled, realized to outdoor with this
The purpose that the coil pipe of machine 1 defrosts.That is, making liquid refrigerant gasify using the heat that phase-change accumulation energy device 3 stores, to realize
Defrosting cycle.
It is understood that when defrosting mode is run, after check valve 7 can be to avoid the condensation heat in outdoor unit 1
Liquid refrigerant refluence gets in machine 2, and indoor temperature is made to reduce.
It should be noted that in the application, the ports A of four-way valve 5 are first port, and the ports B are second port, C-terminal mouth
It is the 4th port for third port, the ports D.
In conclusion air source heat pump defrosting system provided by the present application, including heating circulation pattern, energy storage cyclic module
Formula, heating cycle and energy storage cycle paralleling model and defrosting mode, when need for indoor heating when, heating circulation pattern is transported first
Row, at this moment, the ports A of four-way valve 5 are connected to the ports D, and the ports B are connected to C-terminal mouth, and the first solenoid valve 10 is opened, compressor 4,
Indoor unit 2, restricting element 6 and outdoor unit 1 pass sequentially through pipeline connection and form heating circulation loop, for being indoor heating.System
After thermal cycling profile runs a period of time, when indoor temperature reaches preset temperature value, the first solenoid valve 10 is closed, and control the
Two solenoid valves 9 and third solenoid valve 8 are opened, and compressor 4, phase-change accumulation energy device 3, restricting element 6 and outdoor unit 1 pass sequentially through pipeline
Connection forms energy storage circulation loop, and the operation of energy storage circulation pattern is got up for heat storage extra in recycling heating, so as to
It defrosts to the coil pipe of outdoor unit 1 in when needing defrosting.It, can be again by first after indoor temperature is reduced to certain temperature
Solenoid valve 10 is opened, and so that heating cycle and energy storage is recycled and is worked at the same time.When the coil pipe of outdoor unit 1 needs defrosting, the first electromagnetism
Valve 10 is closed, and heating circulation loop is cut off, and check valve 7 can avoid refrigerant and be back to indoor unit 2, meanwhile, four-way valve 5
The ports A are connected to the ports B, and C-terminal mouth is connected to the ports D, realize the commutation of tank circuit, defrosting mode operation, for outdoor
The coil pipe of machine 1 defrosts.The circulation loop of the air source heat pump defrosting system is simple in structure, can effectively utilize heating cycle
Waste heat defrost, therefore, it is possible to reach defrosting and energy-efficient purpose simultaneously, and cost is relatively low.
Further include being used for nernst cell on the basis of above-described embodiment in view of the startup opportunity problem of energy storage cycle
First temperature sensor of interior temperature and the controller being connected with the first temperature sensor, controller respectively with second solenoid valve 9
It is connected with third solenoid valve 8, when indoor temperature reaches preset temperature value, controller can control second solenoid valve 9 and third
Solenoid valve 8 is opened.
It is understood that the first temperature sensor and controller communicate to connect, the first temperature sensor will sense
Indoor temperature information is sent to controller, and when indoor temperature reaches preset temperature value, controller is to second solenoid valve 9 and third
Solenoid valve 8 sends control command, so that second solenoid valve 9 and third solenoid valve 8 are opened, to make energy storage circulation loop run
Heating circulation pattern and energy storage circulation pattern parallel running are realized in work.
In view of the startup opportunity of defrosting circulation pattern sets on the coil pipe of outdoor unit 1 on the basis of above-described embodiment
Be useful for the second temperature sensor of induction coil temperature, second temperature sensor is connected with controller, controller also with four-way
Valve 5 is connected with the first solenoid valve 10, and when coil temperature reaches default defrosting temperature value, controller can control the first solenoid valve
10 disconnect, and the ports A for controlling four-way valve 5 are connected to the ports B and C-terminal mouth is connected to the ports D.
It is understood that second temperature sensor and controller communicate to connect, second temperature sensor will sense
Coil temperature information is sent to controller, and when coil temperature reaches default defrosting temperature value, controller is to the first solenoid valve 10
Control command is sent, so that the first solenoid valve 10 disconnects；Meanwhile controller sends control command to four-way valve 5, makes four-way valve 5
It turns to, that is, realizes that the ports A of four-way valve 5 are connected to the ports B and C-terminal mouth is connected to the ports D, to make heating circulation loop be cut
Disconnected, defrosting mode is opened, and the energy stored using phase-change accumulation energy device 3 defrosts to the coil pipe of outdoor unit 1.
In order to make phase-change accumulation energy device 3 that there is preferable energy storage effect, on the basis of above-mentioned any one embodiment, phase
The phase-change material for becoming accumulator 3 includes paraffin, fused salt or hydrated salt.
In order to improve the safety of system, avoid the pressure for the high-pressure gaseous refrigerant being discharged from compressor 4 excessive and right
Four-way valve 5 impacts, and on the basis of above-described embodiment, pipeline is switched equipped with high voltage protective.
That is, when the pressure being discharged from compressor 4 is excessive, high voltage protective switch disconnects, excessive to avoid pressure
High-pressure gaseous refrigerant enter four-way valve 5, four-way valve 5 is damaged, this improves the security reliabilities of four-way valve 5.
In view of the concrete structure of restricting element 6, on the basis of above-described embodiment, restricting element 6 be throttle valve or
Capillary.
It, can be by change throttling section or chock length to control high-pressure liquid system when restricting element 6 is throttle valve
The flow of cryogen, to achieve the purpose that decompression.
When restricting element 6 is throttle valve, it is preferable that the throttle valve is electric expansion valve.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
Air source heat pump defrosting system provided by the utility model is described in detail above.It is used herein
Specific case is expounded the principles of the present invention and embodiment, and the explanation of above example is only intended to help to manage
Solve the method and its core concept of the utility model.It should be pointed out that for those skilled in the art, not
Under the premise of being detached from the utility model principle, several improvements and modifications can be made to this utility model, these improve and repair
Decorations are also fallen into the protection domain of the utility model claims.
Claims (6)
1. a kind of air source heat pump defrosting system, which is characterized in that including outdoor unit (1), indoor unit (2), phase-change accumulation energy device
(3), compressor (4), four-way valve (5) and restricting element (6), the ports A of the four-way valve (5) are by being equipped with the first solenoid valve
(10) indoor unit (2) described in pipeline connection and by being equipped with phase-change accumulation energy device described in the pipeline connection of second solenoid valve (9)
(3), the ports B of the four-way valve (5) pass through the air entry of compressor described in pipeline connection (4), the C-terminal of the four-way valve (5)
Mouthful by outdoor unit described in pipeline connection (1), row that the ports D of the four-way valve (5) pass through compressor described in pipeline connection (4)
Gas port, the indoor unit (2) and the phase-change accumulation energy device (3) are respectively by being equipped with the pipe of check valve (7) and third solenoid valve (8)
Road is connected to the restricting element (6), and the restricting element (6) is connected to by pipeline with the outdoor unit (1)；Wherein, the list
It is connected to the entrance of valve (7) with the indoor unit (2), the outlet of the check valve (7) is connected to the restricting element (6).
2. air source heat pump defrosting system according to claim 1, which is characterized in that further include for incuding indoor temperature
The first temperature sensor and the controller that is connected with first temperature sensor, the controller respectively with second electricity
Magnet valve (9) is connected with the third solenoid valve (8), and when the indoor temperature reaches preset temperature value, the controller can
It controls the second solenoid valve (9) and the third solenoid valve (8) is opened.
3. air source heat pump defrosting system according to claim 2, which is characterized in that on the coil pipe of the outdoor unit (1)
Equipped with the second temperature sensor for incuding coil temperature, the second temperature sensor is connected with the controller, described
Controller is also connected with the four-way valve (5) and first solenoid valve (10), when the coil temperature reaches default defrosting temperature
When angle value, the controller can control first solenoid valve (10) and disconnect, and control the ends A of the four-way valve (5)
Mouth is connected to the ports B and the C-terminal mouth is connected to the ports D.
4. according to claim 1-3 any one of them air source heat pump defrosting systems, which is characterized in that the phase-change accumulation energy device
(3) phase-change material includes paraffin, fused salt or hydrated salt.
5. air source heat pump defrosting system according to claim 4, which is characterized in that be connected to the ends D of the four-way valve (5)
The pipeline of the exhaust outlet of mouth and the compressor (4) is switched equipped with high voltage protective.
6. air source heat pump defrosting system according to claim 4, which is characterized in that the restricting element (6) is throttling
Valve or capillary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820141265.7U CN207797471U (en) | 2018-01-25 | 2018-01-25 | A kind of air source heat pump defrosting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820141265.7U CN207797471U (en) | 2018-01-25 | 2018-01-25 | A kind of air source heat pump defrosting system |
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| Publication Number | Publication Date |
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| CN207797471U true CN207797471U (en) | 2018-08-31 |
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| CN201820141265.7U Expired - Fee Related CN207797471U (en) | 2018-01-25 | 2018-01-25 | A kind of air source heat pump defrosting system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107990608A (en) * | 2018-01-25 | 2018-05-04 | 广东工业大学 | A kind of air source heat pump defrosting system |
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2018
- 2018-01-25 CN CN201820141265.7U patent/CN207797471U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107990608A (en) * | 2018-01-25 | 2018-05-04 | 广东工业大学 | A kind of air source heat pump defrosting system |
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| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: He Lin Inventor after: Ke Xiufang Inventor after: Qin Hong Inventor after: Ma Xiaozhen Inventor after: Ke Yong Inventor before: Ke Xiufang Inventor before: He Lin Inventor before: Qin Hong Inventor before: Ma Xiaozhen Inventor before: Ke Yong |
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| CB03 | Change of inventor or designer information | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180831 Termination date: 20210125 |
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| CF01 | Termination of patent right due to non-payment of annual fee |