CN208832630U - Heat pump system - Google Patents
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- CN208832630U CN208832630U CN201821345519.3U CN201821345519U CN208832630U CN 208832630 U CN208832630 U CN 208832630U CN 201821345519 U CN201821345519 U CN 201821345519U CN 208832630 U CN208832630 U CN 208832630U
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- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 230000001629 suppression Effects 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims description 67
- 239000003507 refrigerant Substances 0.000 claims description 52
- 238000010257 thawing Methods 0.000 claims description 15
- 238000007710 freezing Methods 0.000 claims description 5
- 230000008014 freezing Effects 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 2
- 230000002401 inhibitory effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 8
- 230000002829 reductive effect Effects 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000013078 crystal Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
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- Air Conditioning Control Device (AREA)
Abstract
The application is about a kind of heat pump system, including heat pump module, and the heat pump module includes the first compressor for being sequentially connected in series forming circuit, the first control valve, indoor heat exchanger, first throttle element and outdoor heat exchanger；Press down white module, the white module of the suppression includes First Heat Exchanger, and the First Heat Exchanger is located at the windward side of the outdoor heat exchanger, for carrying out suppression frost to the outdoor heat exchanger when the heat pump module is in heating mode.
Description
Technical Field
The application relates to the technical field of air conditioners, in particular to a heat pump system.
Background
The heat pump system can achieve the purpose of adjusting the temperature through the change of the state of the refrigerant. However, in the related art, when the heat pump system is in a heating mode, for example, when indoor air or a heating liquid is heated, the outdoor unit is used as an evaporator, and frost formation may occur due to water molecules contained in the air when the air flows into the outdoor unit, thereby increasing wind resistance and heat resistance; in order to ensure the normal operation of the heat pump system, the heat pump system needs to defrost the outdoor unit periodically, which is likely to cause fluctuation of indoor temperature and poor comfort.
SUMMERY OF THE UTILITY MODEL
The present application provides a heat pump system to address the deficiencies in the related art.
According to an embodiment of the present application, there is provided a heat pump system including:
the heat pump module comprises a first compressor, a first control valve, an indoor heat exchanger, a first throttling element and an outdoor heat exchanger which are sequentially connected in series to form a loop;
the defrosting module comprises a first heat exchanger, the first heat exchanger is located on the windward side of the outdoor heat exchanger and is used for defrosting the outdoor heat exchanger when the heat pump module is in a heating mode.
Optionally, when the first heat exchanger is used as an evaporator, the humidity of the airflow flowing to the outdoor heat exchanger is reduced;
when the first heat exchanger is used as a condenser, defrosting is carried out on the first heat exchanger.
Optionally, the frost suppressing module further comprises:
one end of the second control valve is connected with the first heat exchanger, and the other end of the second control valve is connected to a connecting passage of the first control valve and the indoor heat exchanger;
one end of the third control valve is connected with the first heat exchanger, and the other end of the third control valve is connected to a connecting passage of the first control valve and the outdoor heat exchanger;
one end of the first heat exchanger is connected with the second control valve and the third control valve, and the other end of the first heat exchanger is connected to a connecting passage between the outdoor heat exchanger and the first throttling element.
Optionally, the method further includes:
and one end of the pressure regulating element is connected with the first heat exchanger in series, and the other end of the pressure regulating element is connected to a connecting passage between the outdoor heat exchanger and the first throttling element.
Optionally, the frost suppression module further comprises a second heat exchanger, a fourth control valve, a second compressor and a second throttling element; wherein the second compressor, the fourth control valve, the first heat exchanger, the second throttling element and the second heat exchanger are sequentially connected in series to form a loop, so that the first heat exchanger can be switched between a cooling mode and a heating mode.
Optionally, the frost suppressing module further includes a fifth control valve and a refrigerant pump, the refrigerant pump is connected in series with the fifth control valve, and when one of the refrigerant pump and the fifth control valve is connected to the first heat exchanger, the other is connected to the second heat exchanger.
Optionally, the first heat exchanger comprises a refrigerant line and a liquid line; wherein,
when the refrigerant pipeline is conducted and the liquid pipeline is cut off, refrigerant flows through the refrigerant pipeline to be evaporated, and the first heat exchanger is in a frost inhibiting mode so as to inhibit frost of the outdoor heat exchanger;
when the liquid pipeline is conducted and the refrigerant pipeline is cut off, the liquid flowing through the liquid pipeline can defrost the first heat exchanger.
Optionally, the third heat exchanger is connected in series with the indoor heat exchanger and the first heat exchanger;
one end of the first liquid pump is connected with the indoor heat exchanger, and the other end of the first liquid pump is connected with the third heat exchanger, and the first liquid pump is used for pumping liquid in the indoor heat exchanger into the third heat exchanger and heating the liquid in the third heat exchanger;
one end of the second liquid pump is connected with the first heat exchanger, and the other end of the second liquid pump is connected with the third heat exchanger, and the second liquid pump is used for pumping heated liquid in the third heat exchanger to the first heat exchanger so as to defrost the first heat exchanger;
wherein the freezing point of the liquid in the third heat exchanger is below the minimum of the lowest operating temperature of the first heat exchanger and the outdoor ambient temperature.
Optionally, the frost suppression module further includes a sixth control valve, the first heat exchanger is connected in series with the sixth control valve, and one of the first heat exchanger and the sixth control valve is connected to a connection path between the outdoor heat exchanger and the first throttling element, and the other is connected to a connection path between the outdoor heat exchanger and the first control valve;
when the sixth control valve is switched on, the refrigerant pipeline is switched on, and the liquid pipeline is switched off; when the sixth control valve is closed, the refrigerant pipeline is closed, and the liquid pipeline is communicated.
Optionally, the indoor heat exchanger comprises a liquid heat exchanger and/or a gas heat exchanger.
The technical scheme provided by the embodiment of the application can have the following beneficial effects:
according to the embodiment, the first heat exchanger is located on the windward side of the outdoor heat exchanger and used for restraining frost of the outdoor heat exchanger when the heat pump module is in the heating mode, so that the frosting process of the outdoor heat exchanger can be delayed, the defrosting period of the heat pump module is prolonged, temperature fluctuation of the heat pump module due to defrosting is reduced, and the heating efficiency of the indoor heat exchanger is kept.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Fig. 1 is one of block schematic diagrams showing a structure of a heat pump system according to an exemplary embodiment.
Fig. 2 is a second block diagram illustrating a schematic configuration of a heat pump system according to an exemplary embodiment.
Fig. 3 is a third block diagram illustrating a heat pump system according to an exemplary embodiment.
Fig. 4 is a block diagram illustrating a schematic structure of a heat pump system according to an exemplary embodiment.
Fig. 5 is a block diagram schematically illustrating a structure of a heat pump system according to an exemplary embodiment.
Fig. 6 is a sixth block diagram schematically illustrating the structure of a heat pump system according to an exemplary embodiment.
Fig. 7 is a seventh block diagram illustrating a schematic structure of a heat pump system according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
Fig. 1 is a block diagram schematically illustrating a heat pump system 100 according to an exemplary embodiment. As shown in fig. 1, the heat pump system 100 may include a heat pump module 1 and a frost suppression module 2, the heat pump module 1 may include a first compressor 11, a first control valve 12, an indoor heat exchanger 13, an outdoor heat exchanger 14, and a first throttling element 15, which are sequentially communicated to form a loop, refrigerant from the compressor 11 may be controlled by the first control valve 12 to flow to the indoor heat exchanger 13 or the outdoor heat exchanger 14, when a circulation path of the refrigerant is the compressor 11, the first control valve 12, the indoor heat exchanger 13, the first throttling element 15, and the outdoor heat exchanger 14, the indoor heat exchanger 13 may be used as a condenser, and the outdoor heat exchanger 14 may be used as an evaporator; when the circulation path of the refrigerant is the compressor 11-the first control valve 12-the outdoor heat exchanger 14-the first throttling element 15-the indoor heat exchanger 13, the indoor heat exchanger 13 is used as an evaporator and the outdoor heat exchanger 14 is used as a condenser. The first control valve 12 may include a four-way valve, a combination of two-way valves, a combination of three-way valves and a one-way valve, and the like, which is not limited in this application.
The frost suppression module 2 may include a first heat exchanger 21, where the first heat exchanger 21 is located on the windward side of the outdoor heat exchanger 14, and is used to suppress frost on the outdoor heat exchanger 14 when the outdoor heat exchanger 14 is used as an evaporator, so that the frost formation process of the outdoor heat exchanger 14 may be delayed, the defrosting period of the heat pump module 1 is prolonged, temperature fluctuation of the heat pump module 1 due to defrosting is reduced, and it is beneficial to maintain the heating efficiency of the indoor heat exchanger 13.
In an embodiment, when the first heat exchanger 21 is used as an evaporator, the refrigerant is evaporated to absorb heat when passing through the first heat exchanger 21, so that water molecules in the airflow passing through the first heat exchanger 21 are frosted, the humidity of the airflow passing through the first heat exchanger 21 and flowing to the outdoor heat exchanger 14 is reduced, the frosting amount of the outdoor heat exchanger 14 can be reduced, and the defrosting period of the outdoor heat exchanger 14 can be prolonged. When the first heat exchanger 21 is used as a condenser, the refrigerant flowing through the first heat exchanger 21 is condensed to release heat, so that ice crystals inside the refrigerant can be melted, and the generated heat can partially affect the ice crystals in the outdoor heat exchanger 14 to melt the ice crystals.
Specifically, in one case, as shown in fig. 2, the frost suppression module 2 may further include a second control valve 22 and a third control valve 23; wherein, one end of the second control valve 22 is connected with the first heat exchanger 21, and the other end is connected to the connection path of the first control valve 12 and the indoor heat exchanger 13; one end of the third control valve 23 is connected to the first heat exchanger 21, and the other end is connected to a connection path between the first control valve 12 and the outdoor heat exchanger 14. One end of the first heat exchanger 21 is connected to the second control valve 22 and the third control valve 23, and the other end is connected to a connection path between the outdoor heat exchanger 14 and the first throttling element 15.
Thus, when the heat pump module 1 is in the heating mode, the second control valve 22 is in the open state, and the third control valve 23 is in the cut-off state, the refrigerant flowing out of the control valve 12 is divided into two paths, and one path flows back to the compressor 11 after sequentially passing through the indoor heat exchanger 13 and the outdoor heat exchanger 14; the other path flows back to the compressor 11 after passing through the second control valve 22, the first heat exchanger 21 and the outdoor heat exchanger 14. In other words, in this state, the first heat exchanger 21 is connected in parallel with the indoor heat exchanger 13, and at this time, the first heat exchanger 21 functions as a condenser, and the refrigerant is liquefied to release heat, so that crystal frost in the first heat exchanger 21 and the outdoor heat exchanger 14 is melted, and the purpose of defrosting is achieved.
When the heat pump module 1 is in the heating mode, the second control valve 22 is in the cut-off state, and the third control valve 23 is in the open state, the refrigerant flowing out of the control valve 12 is divided into two paths after passing through the indoor heat exchanger 13, one path flows back to the compressor 11 after passing through the outdoor heat exchanger 14, and the other path flows back to the compressor 11 after passing through the first heat exchanger 21-the third control valve 23. In other words, in this state, the first heat exchanger 21 is connected in parallel with the outdoor heat exchanger 14, and at this time, the first heat exchanger 21 functions as an evaporator, and the refrigerant evaporates and absorbs heat, thereby reducing the humidity of the air flow flowing to the outdoor heat exchanger 14, and achieving the purpose of suppressing the frost formation of the outdoor heat exchanger 14.
The first control valve 22 and the second control valve 23 may respectively include a two-way valve, so that the two-way valve controls the on/off of the corresponding passage. Alternatively, the second control valve 22 and the second control valve 23 may be incorporated into the same three-way valve, and the refrigerant flow direction in the frost suppressing module 2 may be adjusted by the three-way valve.
Further, when the heat pump module 1 is in the heating mode, since the temperature of the indoor and outdoor air is different, and the temperature and the pressure of the refrigerant flowing through the passage are different, the frost suppressing module 2 may further include a pressure adjusting member 24, in order to adjust the pressure, one end of the pressure adjusting member 24 is connected in series with the first heat exchanger 21, and the other end of the pressure adjusting member 24 is connected to the connection passage between the outdoor heat exchanger 14 and the throttling member 15, so as to adjust the pressure of the refrigerant by the pressure adjusting member 24, and establish the flow path of the refrigerant together with the first throttling member 15.
In another case, as shown in fig. 3, the frost suppressing module 2 may further include a second heat exchanger 25, a fourth control valve 26, a second compressor 27, and a second throttling element 28, wherein the second compressor 27, the fourth control valve 26, the first heat exchanger 21, the second throttling element 28, and the second heat exchanger 25 are sequentially connected in series to form a loop. When the refrigerant flows in a path of the second compressor 27-the fourth control valve 26-the second heat exchanger 25-the second throttling element 28-the first heat exchanger 21, the first heat exchanger 21 functions as an evaporator; when the refrigerant flows in the path of the second compressor 27-the fourth control valve 26-the first heat exchanger 21-the second heat exchanger 25, the first heat exchanger 21 functions as a condenser. Therefore, when the first heat exchanger 21 is used as an evaporator, the humidity of the airflow flowing to the outdoor heat exchanger 14 can be reduced, and the purpose of frost inhibition is achieved; when the first heat exchanger 21 is used as a condenser, defrosting can be performed for itself.
Further, as shown in fig. 4, the frost suppressing module 2 may further include a fifth control valve 29 and a refrigerant pump 210, wherein the refrigerant pump 210 is connected in series with the fifth control valve 29, and when one of the refrigerant pump 210 and the fourth control valve 27 is connected to the first heat exchanger 21, the other is connected to the second heat exchanger 25. For example, as shown in fig. 4, one end of the fourth control valve 27 is connected to the first heat exchanger 21, the other end is connected to the refrigerant pump 210, and the other end of the refrigerant pump 210 is connected to the second heat exchanger 25. Therefore, when the frost suppression module 2 is in the defrosting mode, the fifth control valve 29 is turned on, the second throttling element 28 is turned off, the refrigerant can be pumped by the refrigerant pump 210 to circulate, and the second compressor 27 can be suspended to work at the moment, so that the energy consumption is reduced; when the frost suppressing module 2 is in the frost suppressing mode, the fifth control valve 29 is turned off, the second throttling element 28 is turned on, and the second compressor 27 operates normally to suppress frosting of the outdoor heat exchanger 14.
In the above embodiments as shown in fig. 2 to 4, the indoor heat exchanger 13 is exemplified as the gas heat exchanger. In fact, in some other embodiments, as shown in fig. 5, the indoor heat exchanger 13 may also be a liquid heat exchanger, and the heat pump system 100 heats water or other liquid in the indoor heat exchanger 13, which is not limited in this application. It should be noted that: when the indoor heat exchanger 13 in the embodiment shown in fig. 3 and 4 is a liquid heat exchanger, the second heat exchanger 25 in the frost suppressing module 2 may also be incorporated into the indoor heat exchanger 13, for example, as shown in fig. 6, the first heat exchanger 21 is connected in series with the indoor heat exchanger 13, so as to pass through the liquid in the indoor heat exchanger 13 of the frost suppressing module 2.
In another embodiment, a refrigerant pipeline and a liquid pipeline may be disposed in the first heat exchanger 21, wherein when the heat pump module 1 is in the heating mode, the refrigerant pipeline is turned on, and the liquid pipeline is turned off, the refrigerant flowing out of the first compressor 11 flows into the first heat exchanger 21 through the refrigerant pipeline after passing through the indoor heat exchanger 13, and the refrigerant is evaporated inside the first heat exchanger 21 to absorb heat, so that the first heat exchanger 21 is in the frost suppressing mode, the humidity of the air flow flowing to the outdoor heat exchanger 14 is reduced, and the frost suppression is performed on the outdoor heat exchanger 14. When the liquid line is on and the refrigerant line is off, the temperature of the liquid flowing through the liquid line can heat the first heat exchanger 21 to zero or higher, and the first heat exchanger 21 can be defrosted.
For example, as shown in fig. 7, the frost suppression module 2 may include a third heat exchanger 211, a first liquid pump 212, and a second liquid pump 213, wherein the third heat exchanger 211 is connected in series with the indoor heat exchanger 13 and the first heat exchanger 21, one end of the first liquid pump 212 is connected to the indoor heat exchanger 13, and the other end is connected to the third heat exchanger 211, and is configured to draw the liquid in the indoor heat exchanger 13 into the third heat exchanger 211 and heat the liquid in the third heat exchanger 211; the second liquid pump 213 has one end connected to the first heat exchanger 21 and the other end connected to the third heat exchanger 211, and is configured to pump the liquid heated in the third heat exchanger 211 to the first heat exchanger 21, so as to defrost the first heat exchanger 21.
Wherein the freezing point of the liquid in the third heat exchanger 211 is lower than the minimum value of the lowest operating temperature of the first heat exchanger 21 and the outdoor ambient temperature to avoid being frozen while flowing to the first heat exchanger 21. For example, the indoor heat exchanger 13 may include a liquid heat exchanger 131, the third heat exchanger 211 may include a water-oil heat exchanger, the water output from the indoor heat exchanger 21 can heat the oil in the third heat exchanger 211 again and then flow back to the liquid heat exchanger 131, and the heated oil is delivered to the first heat exchanger 21 and can flow back to the third heat exchanger 211.
Wherein, the liquid in the indoor heat exchanger 13 may be water, and accordingly, the first liquid pump 211 may be a water pump; the liquid in the third heat exchanger 211 may comprise oil or glycol solution, which can be prevented from being frozen while flowing into the first heat exchanger 21 due to its low freezing point. For example, the liquid in the third heat exchanger 211 may include 45 gauge transformer oil, the freezing point is-45 °, frost protection is achieved, and the corresponding second liquid pump 213 may be an oil pump.
Of course, the indoor heat exchanger 13 including the liquid heat exchanger 131 is exemplified above, and actually, in the embodiment shown in fig. 7, the indoor heat exchanger 13 may further include the gas heat exchanger 132, the gas heat exchanger 131 is connected in series with the liquid heat exchanger 132 and is connected in parallel with the third heat exchanger 211, and a part of the liquid output from the liquid heat exchanger 131 can be conveyed to the gas heat exchanger 132.
In this embodiment, the frost suppressing module 2 may further include a sixth control valve 214, and the sixth control valve 214 is connected in series with the first heat exchanger 21, and one of the first heat exchanger 21 and the sixth control valve 214 is connected to a connection path between the outdoor heat exchanger 14 and the first throttling element 15, and the other is connected to a connection path between the outdoor heat exchanger 14 and the first control valve 12. When the first heat exchanger 21 is in the defrosting mode, the sixth control valve 214 is closed, the refrigerant pipeline is closed, the first liquid pump 212 and the oil pump 213 are started, and hot oil in the first heat exchanger 21 defrosts itself; when the sixth control valve 214 is opened, the first liquid pump 212 and the oil pump 213 are closed, and the refrigerant can pass through the first heat exchanger 21, and the first heat exchanger 21 is used as an evaporator to perform frost suppression on the outdoor heat exchanger 14.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (10)
1. A heat pump system, comprising:
the heat pump module comprises a first compressor, a first control valve, an indoor heat exchanger, a first throttling element and an outdoor heat exchanger which are sequentially connected in series to form a loop;
the defrosting module comprises a first heat exchanger, the first heat exchanger is located on the windward side of the outdoor heat exchanger and is used for defrosting the outdoor heat exchanger when the heat pump module is in a heating mode.
2. The heat pump system of claim 1, wherein the first heat exchanger reduces the humidity of the airflow to the outdoor heat exchanger when used as an evaporator;
when the first heat exchanger is used as a condenser, defrosting is carried out on the first heat exchanger.
3. The heat pump system of claim 1, wherein the frost suppression module further comprises:
one end of the second control valve is connected with the first heat exchanger, and the other end of the second control valve is connected to a connecting passage of the first control valve and the indoor heat exchanger;
one end of the third control valve is connected with the first heat exchanger, and the other end of the third control valve is connected to a connecting passage of the first control valve and the outdoor heat exchanger;
one end of the first heat exchanger is connected with the second control valve and the third control valve, and the other end of the first heat exchanger is connected to a connecting passage between the outdoor heat exchanger and the first throttling element.
4. The heat pump system of claim 3, further comprising:
and one end of the pressure regulating element is connected with the first heat exchanger in series, and the other end of the pressure regulating element is connected to a connecting passage between the outdoor heat exchanger and the first throttling element.
5. The heat pump system of claim 1, wherein the frost suppression module further comprises a second heat exchanger, a fourth control valve, a second compressor, and a second throttling element; wherein the second compressor, the fourth control valve, the first heat exchanger, the second throttling element and the second heat exchanger are sequentially connected in series to form a loop, so that the first heat exchanger can be switched between a cooling mode and a heating mode.
6. The heat pump system of claim 5, wherein the frost suppression module further comprises a fifth control valve and a refrigerant pump, the refrigerant pump is connected in series with the fifth control valve, and one of the refrigerant pump and the fifth control valve is connected to the second heat exchanger while the other is connected to the first heat exchanger.
7. The heat pump system of claim 1, wherein the first heat exchanger comprises a refrigerant line and a liquid line; wherein,
when the refrigerant pipeline is conducted and the liquid pipeline is cut off, refrigerant flows through the refrigerant pipeline to be evaporated, and the first heat exchanger is in a frost inhibiting mode so as to inhibit frost of the outdoor heat exchanger;
when the liquid pipeline is conducted and the refrigerant pipeline is cut off, the liquid flowing through the liquid pipeline can defrost the first heat exchanger.
8. The heat pump system of claim 7, wherein the frost suppression module further comprises:
a third heat exchanger in series with the indoor heat exchanger and in series with the first heat exchanger;
one end of the first liquid pump is connected with the indoor heat exchanger, and the other end of the first liquid pump is connected with the third heat exchanger, and the first liquid pump is used for pumping liquid in the indoor heat exchanger into the third heat exchanger and heating the liquid in the third heat exchanger;
one end of the second liquid pump is connected with the first heat exchanger, and the other end of the second liquid pump is connected with the third heat exchanger, and the second liquid pump is used for pumping heated liquid in the third heat exchanger to the first heat exchanger so as to defrost the first heat exchanger;
wherein the freezing point of the liquid in the third heat exchanger is below the minimum of the lowest operating temperature of the first heat exchanger and the outdoor ambient temperature.
9. The heat pump system of claim 7, wherein the frost suppression module further comprises a sixth control valve, the first heat exchanger is connected in series with the sixth control valve, and one of the first heat exchanger and the sixth control valve is connected to a connection path between the outdoor heat exchanger and the first throttling element, and the other is connected to a connection path between the outdoor heat exchanger and the first control valve;
when the sixth control valve is switched on, the refrigerant pipeline is switched on, and the liquid pipeline is switched off; when the sixth control valve is closed, the refrigerant pipeline is closed, and the liquid pipeline is communicated.
10. The heat pump system of claim 1, wherein the indoor heat exchanger comprises a liquid heat exchanger and/or a gas heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821345519.3U CN208832630U (en) | 2018-08-20 | 2018-08-20 | Heat pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821345519.3U CN208832630U (en) | 2018-08-20 | 2018-08-20 | Heat pump system |
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| CN208832630U true CN208832630U (en) | 2019-05-07 |
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| CN201821345519.3U Active CN208832630U (en) | 2018-08-20 | 2018-08-20 | Heat pump system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115371311A (en) * | 2022-08-16 | 2022-11-22 | 西安交通大学 | Parasitic heat exchanger system with frost inhibition and defrosting functions and working method |
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2018
- 2018-08-20 CN CN201821345519.3U patent/CN208832630U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115371311A (en) * | 2022-08-16 | 2022-11-22 | 西安交通大学 | Parasitic heat exchanger system with frost inhibition and defrosting functions and working method |
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