CN218296285U - Heat pump system, water heater and air conditioner - Google Patents
Heat pump system, water heater and air conditioner Download PDFInfo
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- CN218296285U CN218296285U CN202221911641.9U CN202221911641U CN218296285U CN 218296285 U CN218296285 U CN 218296285U CN 202221911641 U CN202221911641 U CN 202221911641U CN 218296285 U CN218296285 U CN 218296285U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 239000003507 refrigerant Substances 0.000 claims abstract description 218
- 230000000903 blocking effect Effects 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims description 30
- 230000007423 decrease Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 15
- 238000001816 cooling Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000001186 cumulative effect Effects 0.000 description 2
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Abstract
The utility model provides a heat pump system, water heater and air conditioner relates to the heat pump field, when having solved equipment trouble such as compressor or air enthalpy value decline in refrigerant circulation system, heat pump system is difficult to the problem of normal work. The heat pump system comprises a first refrigerant circulating system with a first outdoor heat exchanger and a second refrigerant circulating system with a second outdoor heat exchanger, wherein the first refrigerant circulating system and the second refrigerant circulating system are respectively in a conduction state and a blocking state with the same indoor heat exchanger; when the first refrigerant circulating system or the second refrigerant circulating system and the indoor heat exchanger are in a blocking state, the first outdoor heat exchanger and the second outdoor heat exchanger are arranged in parallel. The utility model discloses when arbitrary refrigerant circulation system breaks down wherein, can start another refrigerant circulation system, guarantee that heat pump system normally works. And the first outdoor heat exchanger and the second outdoor heat exchanger are arranged in parallel, so that the heat exchange area can be increased, and the heat exchange efficiency is improved.
Description
Technical Field
The utility model belongs to the technical field of the heat pump technique and specifically relates to a heat pump system, water heater and air conditioner are related to.
Background
Existing heat pump systems include an evaporator, a condenser, a throttling element, and a compressor. When heating, the condenser is used as an indoor heat exchanger, the compressor compresses a refrigerant into a high-temperature high-pressure gaseous state, the gaseous refrigerant is condensed into a liquid state after exchanging heat in the condenser and exchanges heat with water or air to be condensed into a liquid state, and the liquid refrigerant flows into the evaporator through the throttling element to exchange heat to form a gaseous refrigerant and flows into the compressor again. During refrigeration, the evaporator serves as an indoor heat exchanger, the compressor compresses a refrigerant into a high-temperature high-pressure gas state, the gas refrigerant is condensed into a liquid state after being subjected to heat exchange in the condenser, and the liquid refrigerant flows into the evaporator through the throttling element to exchange heat with water or air, so that refrigeration is realized, and then the liquid refrigerant flows into the compressor again. The refrigerant circulating system for refrigerating and heating in the heat pump system is formed.
The applicant has found that the prior art has at least the following technical problems: in the actual operation process, the heat pump system often encounters a fault of equipment such as a compressor and the like or stops at a temperature point, and at the moment, the heat pump system only stops operating, so that the normal use of the heat pump system is influenced. In some high-altitude areas, the air enthalpy value is reduced more and more along with the rise of the altitude, the heat pump system can continue to work only by increasing the area of the heat exchanger, otherwise, the heat pump system cannot work normally.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a heat pump system, water heater and air conditioner to when equipment trouble such as compressor or air enthalpy value descend among the refrigerant circulation system who exists among the solution prior art, heat pump system is difficult to the technical problem of normal work. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a heat pump system, including the first refrigerant circulation system who has first outdoor heat exchanger and the second refrigerant circulation system who has the outdoor heat exchanger of second, wherein:
the first refrigerant circulating system and the second refrigerant circulating system are respectively in a conduction state and a blocking state with the same indoor heat exchanger; when the first refrigerant circulating system or the second refrigerant circulating system and the indoor heat exchanger are in the blocking state, the first outdoor heat exchanger and the second outdoor heat exchanger are arranged in parallel.
Preferably, the heat pump system includes a first flow path, the first refrigerant circulation system or the second refrigerant circulation system is in the blocking state with the indoor heat exchanger, and when the heat pump system is in heating operation, two ends of the first flow path are respectively communicated with the inlet end of the second outdoor heat exchanger and the inlet end of the first outdoor heat exchanger.
Preferably, a valve body is arranged on the first flow path, and the first refrigerant circulation system and the second refrigerant circulation system operate independently when the valve body is closed.
Preferably, the heat pump system includes a second flow path, the first refrigerant circulation system and the indoor heat exchanger are in the blocking state, and when the heat pump system is in heating operation, two ends of the second flow path are respectively communicated with the refrigerant outlet end of the first outdoor heat exchanger and the refrigerant outlet end of the second outdoor heat exchanger.
Preferably, the heat pump system further includes a third flow path, the second refrigerant circulation system and the indoor heat exchanger are in the blocking state, and when the heat pump system is in heating operation, two ends of the third flow path are respectively communicated with the refrigerant outlet end of the first outdoor heat exchanger and the refrigerant outlet end of the second outdoor heat exchanger.
Preferably, the heat pump system further includes a third flow path, the second refrigerant circulation system and the indoor heat exchanger are in the blocked state, and when the heat pump system is in heating operation, two ends of the third flow path are respectively communicated with the refrigerant outlet end of the first outdoor heat exchanger and the refrigerant outlet end of the second outdoor heat exchanger;
a first three-way valve is arranged in the first refrigerant circulating system, an A port of the first three-way valve is communicated with the first outdoor heat exchanger, and a B port of the first three-way valve is communicated with a compressor in the first refrigerant circulating system;
when the heat pump system is in heating operation, the port C of the first three-way valve is communicated with the inlet end of the second flow path, and the outlet end of the third flow path is communicated with the port A of the first three-way valve.
Preferably, a second three-way valve is disposed in the second refrigerant circulation system, a port a of the second three-way valve is communicated with the second outdoor heat exchanger, a port B of the second three-way valve is communicated with a compressor in the second refrigerant circulation system,
when the heat pump system is in heating operation, the outlet end of the second flow path is communicated with the port A of the second three-way valve; the C port of the second three-way valve communicates with the inlet end of the third flow path.
Preferably, the indoor heat exchanger comprises a water inlet pipe and a water outlet pipe; or, the indoor heat exchanger comprises an air inlet channel and an air outlet channel.
The utility model also provides a water heater, including above-mentioned heat pump system.
The utility model also provides an air conditioner, including above-mentioned heat pump system.
The utility model provides a heat pump system, water heater and air conditioner compares with prior art, has following beneficial effect: according to the heat pump system, the first refrigerant circulating system and the second refrigerant circulating system are respectively in a conducting state and a blocking state with the same indoor heat exchanger, when equipment in any one of the refrigerant circulating systems, such as a compressor, breaks down, the other refrigerant circulating system can be started, and normal work of the heat pump system is guaranteed. When only the first refrigerant circulating system or the second refrigerant circulating system is started, the first outdoor heat exchanger and the second outdoor heat exchanger are connected in parallel and used for heat exchange together, the heat exchange area of the outdoor heat exchanger can be increased, the heat exchange efficiency is improved, and the heat pump system can work normally even when the air enthalpy value is low. The water heater and the air conditioner can still work normally when equipment such as a compressor and the like in one refrigerant circulating system breaks down or the air enthalpy value is reduced due to the heat pump system, so that the heat exchange efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is an overall structural schematic diagram of a heat pump system;
fig. 2 is a schematic diagram of refrigerant flow directions when the heat pump system is in heating operation and only the first refrigerant circulation system and the indoor heat exchanger are in a conduction state;
fig. 3 is a schematic diagram of the refrigerant flow direction when the heat pump system is in heating operation and only the second refrigerant circulation system and the indoor heat exchanger are in a conduction state;
fig. 4 is a schematic view of the refrigerant flow direction when the heat pump system is in a cooling operation and only the first refrigerant circulation system and the indoor heat exchanger are in a conduction state;
fig. 5 is a schematic view illustrating a refrigerant flow direction when the heat pump system performs a cooling operation and only the second refrigerant cycle system and the indoor heat exchanger are in a conduction state.
In the figure 11, a first outdoor heat exchanger; 12. a first compressor; 13. a first four-way valve; 14. a first gas-liquid separator; 15. a first throttling element; 21. a second outdoor heat exchanger; 22. a second compressor; 23. a second four-way valve; 24. a second gas-liquid separator; 25. a second throttling element; 3. an indoor heat exchanger; 31. a water outlet pipe; 32. a water inlet pipe; 4. a first flow path; 5. a second flow path; 6. a third flow path; 7. a first three-way valve; 8. a second three-way valve; 9. a valve body.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "length", "width", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "side", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and to simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
The embodiment of the utility model provides a heat pump system, water heater and air conditioner, when equipment in any refrigerant circulation system, for example the compressor breaks down, can start another refrigerant circulation system, guarantee the normal work of heat pump system; and the heat exchange area of the outdoor heat exchanger can be increased, the heat exchange efficiency is improved, and the heat pump system can work normally even when the air enthalpy value is low.
The technical solution provided by the present invention is explained in more detail with reference to fig. 1 to 5.
Example one
As shown in fig. 1 to 5, the present embodiment provides a heat pump system, which includes a first refrigerant circulation system having a first outdoor heat exchanger 11 and a second refrigerant circulation system having a second outdoor heat exchanger 21, wherein: the first refrigerant circulating system and the second refrigerant circulating system are respectively in a conduction state and a blocking state with the same indoor heat exchanger 3; when the first refrigerant circulation system or the second refrigerant circulation system is in a blocking state with the indoor heat exchanger 3, the first outdoor heat exchanger 11 and the second outdoor heat exchanger 21 are arranged in parallel.
As mentioned in the background of the invention, a refrigerant circulation system in the prior art includes an evaporator, a condenser, a throttling element and a compressor which are communicated with each other. Similarly, referring to fig. 1 to 5, the first refrigerant cycle system of the present embodiment includes a first compressor 12, a first indoor heat exchanger 3, a first throttling element 15 (which may be an electronic expansion valve), and a first outdoor heat exchanger 11, which are sequentially connected, the first compressor 12 is connected to a first four-way valve 13, and an inlet end of the first compressor 12 is provided with a first gas-liquid separator 14.
The second refrigerant circulation system includes a second compressor 22, a second indoor heat exchanger 3, a second throttling element 25 (which may be an electronic expansion valve), and a second outdoor heat exchanger 21, which are sequentially connected, the second compressor 22 is connected with a second four-way valve 23, and an inlet end of the second compressor 22 is provided with a second gas-liquid separator 24.
In the heat pump system of the present embodiment, when only the first refrigerant circulation system is activated, the second refrigerant circulation system is in a blocked state with respect to the indoor heat exchanger 3, and at this time, the second throttling element 25 is in a closed state. When only the second refrigerant circulation system is started, the first refrigerant circulation system and the indoor heat exchanger 3 are in a blocking state, and at this time, the first throttling element 15 is in a closed state.
In the heat pump system of the embodiment, because the first refrigerant circulation system and the second refrigerant circulation system are respectively in a conduction state and a blocking state with the same indoor heat exchanger 3, when equipment in any one of the refrigerant circulation systems, such as a compressor, breaks down, the other refrigerant circulation system can be started, and the normal work of the heat pump system is ensured. And when only starting first refrigerant circulation system or second refrigerant circulation system, first outdoor heat exchanger 11 and second outdoor heat exchanger 21 set up in parallel, are used for the heat transfer jointly, can increase the heat transfer area of outdoor heat exchanger, improve heat exchange efficiency, even when the air enthalpy value is low, the heat pump system can also work normally.
The heat pump system may be applied to a water heater or an air conditioner, and when the heat pump system is applied to a water heater, the indoor heat exchanger 3 is used for exchanging heat between a refrigerant and water, and in this case, referring to fig. 1 to 5, the indoor heat exchanger 3 includes a water inlet pipe 32 and a water outlet pipe 31. The water flows into the indoor heat exchanger 3 through the water inlet pipe 32, exchanges heat with the refrigerant, and then flows out through the water outlet pipe 31.
When the heat pump system is applied to a water heater, the indoor heat exchanger 3 is used for exchanging heat between a refrigerant and air. At this time, the indoor heat exchanger 3 includes an air inlet channel and an air outlet channel. Indoor air enters the indoor heat exchanger 3 through the air inlet channel, exchanges heat with a refrigerant and then flows out through the air outlet channel.
In order to make the first refrigerant circulation system or the second refrigerant circulation system and the indoor heat exchanger 3 in a blocking state, the first outdoor heat exchanger 11 and the second outdoor heat exchanger 21 are arranged in parallel, the embodiment provides a specific implementation manner:
referring to fig. 1 to 5, the heat pump system includes a first flow path 4, a blocking state is provided between the first refrigerant circulation system or the second refrigerant circulation system and the indoor heat exchanger 3, and when the heat pump system is in heating operation, two ends of the first flow path 4 are respectively communicated with an inlet end of the second outdoor heat exchanger 21 and an inlet end of the first outdoor heat exchanger 11. Since the flow direction of the refrigerant is opposite to that of the refrigerant during the heating operation and the cooling operation of the heat pump system, in other words, the first refrigerant circulating system or the second refrigerant circulating system and the indoor heat exchanger 3 are in the blocked state, and both ends of the first flow path 4 are respectively communicated with the outlet end of the second outdoor heat exchanger 21 and the outlet end of the first outdoor heat exchanger 11 during the cooling operation of the heat pump system.
When the first refrigerant circulation system is separately started, the refrigerant in the first refrigerant circulation system can be branched to the second outdoor heat exchanger 21 through the first flow path 4 (during heating operation), or the refrigerant after heat exchange by the second outdoor heat exchanger 21 can be recombined into the first refrigerant circulation system through the first flow path 4 (during cooling operation). When the second refrigerant circulation system is separately started, the refrigerant in the second refrigerant circulation system can be branched to the first outdoor heat exchanger 11 through the first flow path 4 (during heating operation), or the refrigerant after heat exchange of the first outdoor heat exchanger 11 can be converged to the second refrigerant circulation system again through the first flow path 4 (during cooling operation).
As an alternative embodiment, referring to fig. 1 to 5, a valve body 9 is disposed on the first flow path 4, and the first refrigerant circulation system and the second refrigerant circulation system operate independently when the valve body 9 is closed.
Referring to fig. 1 to 5, when the first refrigerant circulation system or the second refrigerant circulation system is separately turned on, the refrigerant passes through the first flow path 4 regardless of the heating operation or the cooling operation; therefore, when the valve body 9 is closed, the first flow path 4 is cut off, the first outdoor heat exchanger 11 and the second outdoor heat exchanger 21 are not communicated, and the first refrigerant circulation system and the second refrigerant circulation system can operate independently without mutual influence. When the valve body 9 is opened and the second throttling element 25 is closed, the first refrigerant circulating system operates independently; when the valve body 9 is opened and the first throttling element 15 is closed, the second refrigerant circulation system operates alone.
As an alternative embodiment, referring to fig. 1 to 5, the heat pump system includes a second flow path 5, the first refrigerant circulation system and the indoor heat exchanger 3 are in a blocked state, and when the heat pump system is in heating operation, two ends of the second flow path 5 are respectively communicated with the refrigerant outlet end of the first outdoor heat exchanger 11 and the refrigerant outlet end of the second outdoor heat exchanger 21. Since the flow direction of the refrigerant is opposite to that of the refrigerant during the heating operation and the cooling operation of the heat pump system, in other words, the first refrigerant circulation system and the indoor heat exchanger 3 are in a blocking state, and both ends of the second flow path 5 are respectively communicated with the refrigerant inlet end of the first outdoor heat exchanger 11 and the refrigerant inlet end of the second outdoor heat exchanger 21 during the cooling operation of the heat pump system.
When the second refrigerant circulating system is independently started, the refrigerant flows through the first flow path 4 and the second flow path 5, so that the first outdoor heat exchanger 11 and the second outdoor heat exchanger 21 are arranged in parallel, the heat exchange area of the outdoor side is increased, and the normal operation of the heat pump system is ensured.
As an optional embodiment, referring to fig. 1 to 5, the heat pump system further includes a third flow path 6, the second refrigerant circulation system and the indoor heat exchanger 3 are in a blocked state, and when the heat pump system is in heating operation, two ends of the third flow path 6 are respectively communicated with the refrigerant outlet end of the first outdoor heat exchanger 11 and the refrigerant outlet end of the second outdoor heat exchanger 21. In other words, the second refrigerant circulation system and the indoor heat exchanger 3 are in a blocked state, and both ends of the third flow path 6 are respectively communicated with the refrigerant inlet end of the first outdoor heat exchanger 11 and the refrigerant inlet end of the second outdoor heat exchanger 21 when the heat pump system is in a cooling operation.
When the first refrigerant circulating system is independently started, the refrigerant flows through the first flow path 4 and the third flow path 6, so that the first outdoor heat exchanger 11 and the second outdoor heat exchanger 21 are arranged in parallel, the heat exchange area of the outdoor side is increased, and the normal operation of the heat pump system is ensured.
In order to realize the communication between the first flow path 4, the second flow path 5, and the third flow path 6 and the first refrigerant circulation system and the second refrigerant circulation system, as an alternative embodiment, referring to fig. 1 to 5, a first three-way valve 7 is disposed in the first refrigerant circulation system, an a port of the first three-way valve 7 is communicated with the first outdoor heat exchanger 11, and a B port of the first three-way valve 7 is communicated with a compressor in the first refrigerant circulation system; when the heat pump system is in heating operation, the port C of the first three-way valve 7 is communicated with the inlet of the second flow path 5, and the outlet of the third flow path 6 is communicated with the port a of the first three-way valve 7. In other words, when the heat pump system operates in a cooling mode, the port C of the first three-way valve 7 is communicated with the outlet end of the second flow path 5, and the inlet end of the third flow path 6 is communicated with the port a of the first three-way valve 7.
The first three-way valve 7 connects the first outdoor unit, the first compressor 12, the second flow path 5 and the third flow path 6, and facilitates control of opening and closing of the corresponding flow paths.
As an alternative embodiment, referring to fig. 1 to 5, a second three-way valve 8 is disposed in the second refrigerant circulation system, a port a of the second three-way valve 8 is communicated with the second outdoor heat exchanger 21, a port B of the second three-way valve 8 is communicated with a compressor in the second refrigerant circulation system, and when the heat pump system is in heating operation, an outlet end of the second flow path 5 is communicated with the port a of the second three-way valve 8; the C port of the second three-way valve 8 communicates with the inlet end of the third flow path 6. Because the flow direction of the refrigerant is opposite when the heat pump system is in heating operation and in refrigerating operation, in other words, when the heat pump system is in refrigerating operation, the inlet end of the second flow path 5 is communicated with the port A of the second three-way valve 8; the C port of the second three-way valve 8 communicates with the outlet end of the third flow path 6.
The second three-way valve 8 is connected to the second outdoor unit, the second compressor 22, the second flow path 5 and the third flow path 6, and is convenient for controlling the opening and closing of the corresponding flow paths.
The heat pump system of the present embodiment, for example, applied to a water heater, is operated in heating mode, and only when the first refrigerant circulation system is turned on:
referring to fig. 2, after the refrigerant is exhausted from the first compressor 12, passes through the first four-way valve 13, enters the indoor heat exchanger 3 to heat water, is throttled by the first throttling element 15, the valve body 9 on the first flow path 4 is opened, the refrigerant is divided into two parts, and a part of the refrigerant directly absorbs heat in the first outdoor heat exchanger 11 and then flows out from the port a of the first three-way valve 7; another part of the refrigerant flows into the second exterior heat exchanger 21 through the first flow path 4, at this time, the second throttling element 25 of the second refrigerant circulation system is closed, and the refrigerant flowing into the second exterior heat exchanger 21 absorbs heat and then flows to the C port from the a port of the second three-way valve 8 to be returned to the first refrigerant circulation system. The two parts of the refrigerant after absorbing heat are converged at the port a of the first three-way valve 7 and then flow to the port B thereof, and then return to the first compressor through the first four-way valve 13 and the first gas-liquid separator 14.
When the heating operation is performed and only the second refrigerant circulation system is started:
referring to fig. 3, after the refrigerant is exhausted from the second compressor 22, passes through the second four-way valve 23, enters the indoor heat exchanger 3 to heat water, and is throttled by the second electronic expansion valve, the valve body 9 on the first flow path 4 is opened, and the refrigerant is divided into two parts: a part of the refrigerant is directly absorbed heat in the second outdoor heat exchanger 21 and then flows out from the port a of the second three-way valve 8; another part of the refrigerant flows into the first outdoor heat exchanger 11 through the first flow path 4, at this time, the first throttling element 15 of the first refrigerant circulation system is closed, and the refrigerant flowing into the first outdoor heat exchanger 11 absorbs heat and then flows to the C port from the a port of the first three-way valve 7 to return to the second refrigerant circulation system. The two heat-absorbed refrigerants are merged at the port a of the second three-way valve 8 and then flow to the port B thereof, and then return to the second compressor 22 through the second four-way valve 23 and the second gas-liquid separator 24.
When the refrigeration operation is carried out and only the first refrigerant circulating system is started:
referring to fig. 4, the refrigerant is exhausted from the first compressor 12, passes through the first four-way valve 13, flows from the port B to the port a of the first three-way valve 7, and is divided into two parts, and a part of the refrigerant enters the first outdoor heat exchanger 11 to be condensed and released heat, and is merged with the refrigerant from the first flow path 4; another part of the refrigerant flows to the port a through the port C of the second three-way valve 8 via the third flow path 6, and flows into the second outdoor heat exchanger 21 to condense and release heat, at this time, the second throttling element 25 in the second refrigerant cycle system is closed, the valve body 9 on the first flow path 4 is opened, and the refrigerant flowing out of the second outdoor heat exchanger 21 flows back to the first refrigerant system via the first flow path 4. The merged refrigerant is throttled by the first throttling element 15, absorbs heat by the indoor heat exchanger 3, passes through the first four-way valve 13 and the first gas-liquid separator 14, and finally returns to the first compressor 12.
When the refrigeration operation is carried out and only the second refrigerant circulating system is started:
referring to fig. 5, the refrigerant is discharged from the second compressor 2, passes through the second four-way valve 23, flows from the port B to the port a of the second three-way valve 8, and is divided into two parts, and a part of the refrigerant enters the second outdoor heat exchanger 21 to be condensed and released heat, and then joins the refrigerant from the first flow path 4; the other part of the refrigerant flows through the second flow path 5, flows to the port a through the port C of the first three-way valve 7, flows into the first outdoor heat exchanger 11, condenses and releases heat, at this time, the first throttling element 15 is closed, the valve body 9 on the first flow path 4 is opened, and the refrigerant flowing out of the first outdoor heat exchanger 11 flows back to the second refrigerant circulation system through the first flow path 4. The merged refrigerant is throttled by the second throttling element 25, absorbs heat by the indoor heat exchanger 3, passes through the second four-way valve 23 and the second gas-liquid separator 24, and finally returns to the second compressor 22.
Example two
The embodiment provides a water heater, which comprises the heat pump system.
The water heater of the embodiment is provided with the heat pump system, so when equipment such as a compressor and the like in one refrigerant circulating system fails or the air enthalpy value is reduced, the water heater can still work normally, and the heat exchange efficiency is improved.
EXAMPLE III
The embodiment provides an air conditioner, which comprises the heat pump system.
The air conditioner of the embodiment is provided with the heat pump system, so when equipment such as a compressor and the like in one refrigerant circulating system fails or the air enthalpy value is reduced, the air conditioner can still normally work, and the heat exchange efficiency is improved.
Example four
The embodiment provides a control method based on the heat pump system, and the control method comprises the following steps:
when the second refrigerant circulation system fails, or when the water temperature or the indoor air temperature of the second refrigerant circulation system is higher than the set temperature of a user, or the difference between the ambient temperature and the pipe temperature of the second outdoor heat exchanger 21 is higher than or equal to the preset temperature and the accumulated operation time of the second refrigerant circulation system is longer than or equal to the accumulated operation time of the first refrigerant circulation system plus the preset time, only the first refrigerant circulation system and the indoor heat exchanger 3 are controlled to be in a conduction state;
when the first refrigerant circulation system fails, or when the water temperature or the indoor air temperature of the first refrigerant circulation system is higher than the set temperature of the user, or when the difference between the ambient temperature and the pipe temperature of the second outdoor heat exchanger 21 is higher than or equal to the preset temperature, only the second refrigerant circulation system and the indoor heat exchanger 3 are controlled to be in a conduction state.
According to the control method of the heat pump system, when any one of the first refrigerant circulating system and the second refrigerant circulating system fails or the water temperature or the indoor air temperature is higher than the set temperature of a user, the other circulating system is started to ensure that the heat pump system works normally. When only the first refrigerant circulation system or the second refrigerant circulation system is started, the first outdoor heat exchanger 11 and the second outdoor heat exchanger 21 are arranged in parallel, the outdoor heat exchange area is increased, the heat exchange efficiency is improved, and even when the air enthalpy value is low, the heat pump system can normally work
And when the difference between the ambient temperature and the tube temperature of the second outdoor heat exchanger 21 is greater than or equal to the preset temperature, it indicates that the heat exchange efficiency is sharply reduced, the two compressors are difficult to normally operate together, at this time, the unit is in a low-efficiency operation state, and the compressors have a liquid return risk, for example, as the altitude rises, the air becomes thinner and thinner, at this time, the heat exchange efficiency of the heat pump system is seriously reduced, at this time, one of the refrigerant circulation systems needs to be closed, and the operation reliability and the heat exchange efficiency of the heat pump system are ensured.
When the difference between the ambient temperature and the tube temperature of the second outdoor heat exchanger 21 is greater than or equal to the preset temperature and the cumulative operating time of the second refrigerant circulation system is greater than or equal to the cumulative operating time of the first refrigerant circulation system plus the preset time, only the first refrigerant circulation system and the indoor heat exchanger 3 are controlled to be in a conduction state, so that the first refrigerant circulation system is preferentially controlled to be started under the condition that the heat exchange efficiency of the heat pump system is sharply reduced, and the control unit is ensured to smoothly execute the corresponding instruction.
As an optional embodiment, the preset duration ranges from 14h to 34h. Preferably, the preset time period is 24 hours, so that the first refrigerant circulation system can be preferentially controlled to be started under the condition that the heat exchange efficiency of the heat pump system is sharply reduced, and the first refrigerant circulation system and the second refrigerant circulation system work in turn.
As an optional embodiment, when the heat pump system is in heating operation, the preset temperature ranges from 15 ℃ to 25 ℃, and preferably, the preset temperature takes 20 ℃; when the heat pump system operates in a refrigerating mode, the value range of the preset temperature is 17-27 ℃, and preferably, the value of the preset temperature is 23 ℃.
As an alternative embodiment, when the first refrigerant circulation system and the second refrigerant circulation system need to be opened simultaneously, the valve body 9 on the first flow path 4 is closed, the first throttling element 15 and the second throttling element 25 are both opened, and the first refrigerant circulation system and the second refrigerant circulation system do not influence each other and work independently.
The particular features, structures, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A heat pump system comprising a first refrigerant circulation system having a first outdoor heat exchanger and a second refrigerant circulation system having a second outdoor heat exchanger, wherein:
the first refrigerant circulating system and the second refrigerant circulating system are respectively in a conduction state and a blocking state with the same indoor heat exchanger; when the first refrigerant circulating system or the second refrigerant circulating system and the indoor heat exchanger are in the blocking state, the first outdoor heat exchanger and the second outdoor heat exchanger are arranged in parallel.
2. The heat pump system as claimed in claim 1, wherein the heat pump system includes a first flow path, the first refrigerant circulation system or the second refrigerant circulation system is in the blocked state with respect to the indoor heat exchanger, and when the heat pump system is in heating operation, two ends of the first flow path are respectively communicated with the inlet end of the second outdoor heat exchanger and the inlet end of the first outdoor heat exchanger.
3. The heat pump system as claimed in claim 2, wherein a valve is disposed on the first flow path, and the first refrigerant circulation system and the second refrigerant circulation system operate independently when the valve is closed.
4. The heat pump system as claimed in claim 2, wherein the heat pump system includes a second flow path, the first refrigerant circulation system and the indoor heat exchanger are in the blocked state, and when the heat pump system is in heating operation, two ends of the second flow path are respectively communicated with the refrigerant outlet end of the first outdoor heat exchanger and the refrigerant outlet end of the second outdoor heat exchanger.
5. The heat pump system as claimed in claim 2, wherein the heat pump system further includes a third flow path, the second refrigerant circulation system and the indoor heat exchanger are in the blocked state, and when the heat pump system is in heating operation, two ends of the third flow path are respectively communicated with the refrigerant outlet end of the first outdoor heat exchanger and the refrigerant outlet end of the second outdoor heat exchanger.
6. The heat pump system according to claim 4, wherein the heat pump system further includes a third flow path, the second refrigerant circulation system and the indoor heat exchanger are in the blocked state, and when the heat pump system is in heating operation, two ends of the third flow path are respectively communicated with the refrigerant outlet end of the first outdoor heat exchanger and the refrigerant outlet end of the second outdoor heat exchanger;
a first three-way valve is arranged in the first refrigerant circulating system, an A port of the first three-way valve is communicated with the first outdoor heat exchanger, and a B port of the first three-way valve is communicated with a compressor in the first refrigerant circulating system;
when the heat pump system is in heating operation, the port C of the first three-way valve is communicated with the inlet end of the second flow path, and the outlet end of the third flow path is communicated with the port A of the first three-way valve.
7. The heat pump system as claimed in claim 6, wherein a second three-way valve is provided in the second refrigerant circulation system, a port a of the second three-way valve is connected to the second outdoor heat exchanger, a port B of the second three-way valve is connected to a compressor of the second refrigerant circulation system,
when the heat pump system is in heating operation, the outlet end of the second flow path is communicated with the port A of the second three-way valve; the port C of the second three-way valve communicates with the inlet end of the third flow path.
8. The heat pump system of claim 1, wherein the indoor heat exchanger comprises a water inlet pipe and a water outlet pipe; or, the indoor heat exchanger comprises an air inlet channel and an air outlet channel.
9. A water heater comprising the heat pump system of any one of claims 1-8.
10. An air conditioner characterized by comprising the heat pump system according to any one of claims 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221911641.9U CN218296285U (en) | 2022-07-21 | 2022-07-21 | Heat pump system, water heater and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221911641.9U CN218296285U (en) | 2022-07-21 | 2022-07-21 | Heat pump system, water heater and air conditioner |
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| CN218296285U true CN218296285U (en) | 2023-01-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115164441A (en) * | 2022-07-21 | 2022-10-11 | 珠海格力电器股份有限公司 | Heat pump system, water heater, air conditioner and control method of heat pump system |
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- 2022-07-21 CN CN202221911641.9U patent/CN218296285U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115164441A (en) * | 2022-07-21 | 2022-10-11 | 珠海格力电器股份有限公司 | Heat pump system, water heater, air conditioner and control method of heat pump system |
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