CN113639485A - Method and device for adjusting exhaust superheat degree of heat pump equipment and heat pump equipment - Google Patents
Method and device for adjusting exhaust superheat degree of heat pump equipment and heat pump equipment Download PDFInfo
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- 239000003507 refrigerant Substances 0.000 claims abstract description 437
- 239000007788 liquid Substances 0.000 claims abstract description 105
- 238000010438 heat treatment Methods 0.000 claims abstract description 65
- 238000001816 cooling Methods 0.000 claims description 34
- 238000005057 refrigeration Methods 0.000 claims description 25
- 230000002829 reductive effect Effects 0.000 description 17
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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Abstract
The application relates to the technical field of heat pump equipment and discloses a method for adjusting the exhaust superheat degree of the heat pump equipment. The method for adjusting the degree of superheat of the exhaust gas of the heat pump device comprises the following steps: obtaining the exhaust superheat degree of a compressor of the heat pump equipment and the operation mode of the heat pump equipment, wherein the operation mode comprises a heating mode and a refrigerating mode; according to the operation mode and the exhaust superheat degree, determining the refrigerant storage speed or the refrigerant release speed of the liquid storage device, wherein the refrigerant storage speed corresponds to the heating mode, and the refrigerant release speed corresponds to the refrigerating mode; and adjusting a flow control valve for controlling the liquid storage device to an opening corresponding to the refrigerant storage speed or the refrigerant release speed. The method for adjusting the exhaust superheat degree of the heat pump equipment can give consideration to the refrigerant quantity and the exhaust superheat degree in the circulating system, and improves the working efficiency of the heat pump equipment. The application also discloses a device for adjusting the exhaust superheat degree of the heat pump equipment and the heat pump equipment.
Description
Technical Field
The application relates to the technical field of heat pump equipment, in particular to a method and a device for adjusting the degree of superheat of exhaust gas of the heat pump equipment and the heat pump equipment.
Background
At present, because the capacity of a water heater system is generally small, the sensitivity of the water heater system to the quantity of a refrigerant is high, the influence of small difference of the quantity of the refrigerant in system operation on the overall performance of the system is large, the optimal quantity of the refrigerant in system refrigeration and heating is different, a liquid storage tank is added in the existing water heater system to solve the problem that the quantity of the refrigerant in heating and refrigeration is different, the liquid storage tank generally utilizes the difference of the densities of gas-liquid two-phase states of the refrigerant to separate gas and liquid, and partial liquid refrigerant is stored in the liquid storage tank to realize the regulation of the quantity of the refrigerant in the water heater system.
The exhaust superheat degree of the compressor refers to a temperature difference value of saturation temperature corresponding to current condensing pressure in a compressor exhaust pipe and a condenser, the exhaust superheat degree is too high or too low, and adverse effects are generated on a water heater.
In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:
the water heater in the heating mode needs a small amount of refrigerant, the water heater in the cooling mode needs a large amount of refrigerant, and the prior art cannot take account of both the amount of refrigerant and the degree of superheat of exhaust gas in the switching process of the water heater from the heating mode to the cooling mode or from the cooling mode to the heating mode.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.
The embodiment of the disclosure provides a method and a device for adjusting the exhaust superheat degree of heat pump equipment and the heat pump equipment, and aims to solve the technical problem that the refrigerant quantity and the exhaust superheat degree cannot be considered in the operation mode switching process in the prior art.
In some embodiments, the heat pump apparatus includes a liquid storage device, and the method for adjusting the superheat degree of exhaust gas of the heat pump apparatus includes: obtaining the exhaust superheat degree of a compressor of heat pump equipment and the operation mode of the heat pump equipment, wherein the operation mode comprises a heating mode and a cooling mode; determining a refrigerant storage speed or a refrigerant release speed of the liquid storage device according to the operation mode and the exhaust superheat degree, wherein the refrigerant storage speed corresponds to the heating mode, and the refrigerant release speed corresponds to the refrigeration mode; and adjusting a flow control valve for controlling the liquid storage device to an opening corresponding to the refrigerant storage speed or the refrigerant release speed.
Optionally, determining a refrigerant storage speed or a refrigerant release speed of the liquid storage device according to the operation mode and the exhaust superheat degree includes: obtaining the current refrigerant quantity of the liquid storage device; obtaining a refrigerant quantity difference value between a set refrigerant quantity and the current refrigerant quantity; and determining the refrigerant storage speed or the refrigerant release speed of the liquid storage device according to the refrigerant quantity difference and the exhaust superheat degree.
Optionally, determining a refrigerant storage speed or a refrigerant release speed of the liquid storage device according to the refrigerant quantity difference and the exhaust superheat degree includes: obtaining the refrigerant storage speed or the refrigerant release speed corresponding to the exhaust superheat degree; obtaining estimated time length for enabling the refrigerant quantity difference value to become zero according to the refrigerant storage speed or the refrigerant release speed; and under the condition that the estimated time length is less than the set time length, re-determining the refrigerant storage speed or the refrigerant release speed according to the refrigerant quantity difference value and the preset time length, so that the new estimated time length when the refrigerant quantity difference value becomes zero is greater than or equal to the set time length.
Optionally, the obtaining the refrigerant storage speed or the refrigerant release speed corresponding to the degree of superheat of the exhaust gas includes: in the heating mode, if the exhaust superheat degree is greater than a first set temperature, determining that the refrigerant storage speed is a first storage speed; if the exhaust superheat degree is less than or equal to a second set temperature, determining that the refrigerant storage speed is a second storage speed, wherein the first storage speed is greater than the second storage speed; in the refrigeration mode, if the exhaust superheat degree is greater than a second set temperature, determining the refrigerant release speed as a first release speed; and if the exhaust superheat degree is less than or equal to a second set temperature, determining the refrigerant release speed as a second release speed, wherein the first release speed is less than the second release speed.
Optionally, obtaining a refrigerant quantity difference between a set refrigerant quantity and the current refrigerant quantity includes: under the heating mode, determining the difference value between a first set refrigerant quantity and the current refrigerant quantity as the refrigerant quantity difference value; in a refrigeration mode, determining a difference value between the current refrigerant quantity and a second set refrigerant quantity as the refrigerant quantity difference value; the first set refrigerant amount is larger than the second set refrigerant amount.
Optionally, the method for adjusting the superheat degree of the exhaust gas of the heat pump device further comprises: and determining the refrigerant storage speed or the refrigerant release speed as zero when the refrigerant quantity difference is smaller than or equal to a set refrigerant quantity difference.
Optionally, the method for adjusting the degree of superheat of the heat pump apparatus further comprises: under the condition that the exhaust superheat degree is larger than a set temperature, reducing the frequency of the compressor and/or increasing the rotating speed of a fan of the heat pump equipment; and under the condition that the exhaust superheat degree is smaller than or equal to the set temperature, increasing the frequency of the compressor, and/or reducing the rotating speed of a fan of the heat pump equipment.
In some embodiments, the means for adjusting the superheat of the exhaust gas of the heat pump apparatus comprises: the device comprises an obtaining module, a first determining module and a first control module, wherein the obtaining module is configured to obtain a discharge superheat degree of a compressor of a heat pump device and operation modes of the heat pump device, and the operation modes comprise a heating mode and a cooling mode; the first determining module is configured to determine a refrigerant storage speed or a refrigerant release speed of the liquid storage device according to the operation mode and the exhaust superheat degree, wherein the refrigerant storage speed corresponds to the heating mode, and the refrigerant release speed corresponds to the cooling mode; the first control module is configured to adjust a flow control valve for controlling the liquid storage device to an opening degree corresponding to the refrigerant storage speed or the refrigerant release speed.
In some embodiments, the means for adjusting the degree of superheat of the exhaust gas of the heat pump device comprises a processor and a memory storing program instructions, the processor being configured to execute the method for adjusting the degree of superheat of the exhaust gas of the heat pump device provided in the previous embodiments when executing the program instructions.
In some embodiments, the heat pump device comprises the device for adjusting the superheat degree of the exhaust gas of the heat pump device provided by the previous embodiments.
The method and the device for adjusting the exhaust superheat degree of the heat pump equipment and the heat pump equipment provided by the embodiment of the disclosure can realize the following technical effects:
in the heating mode, the heat pump equipment (such as a water heater) needs less refrigerant, the refrigerant needs to be stored in the liquid storage device through the circulating system, and the exhaust superheat degree is adjusted by adjusting the refrigerant storage speed; in a refrigeration mode, a large amount of refrigerants are needed by the heat pump equipment, the refrigerants need to be released into the circulating system by the liquid storage device, and the exhaust superheat degree is adjusted by adjusting the refrigerant release speed, so that on one hand, the refrigerant amount in the circulating system of the heat pump equipment can meet the requirement of the operation mode, and the efficiency of the heat pump equipment is improved; on the other hand, the exhaust superheat degree can be adjusted by adjusting the refrigerant release speed or the refrigerant storage speed, the refrigerant quantity and the exhaust superheat degree in the circulating system can be considered, and the working efficiency of the heat pump equipment is improved.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated in drawings corresponding to, and not limiting to, embodiments in which elements having the same reference number designation are identified as similar elements, and in which:
fig. 1 is a schematic view of a circulation system of a heat pump apparatus provided in an embodiment of the present disclosure;
fig. 2 is a schematic view of a circulation system of a heat pump apparatus provided in an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of a method for adjusting superheat of exhaust gas of a heat pump device according to an embodiment of the disclosure;
FIG. 4 is a schematic diagram of an apparatus for adjusting superheat of exhaust gas of a heat pump device according to an embodiment of the disclosure;
fig. 5 is a schematic diagram of an apparatus for adjusting the degree of superheat of exhaust gas of a heat pump device according to an embodiment of the disclosure.
Detailed Description
So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.
The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
The term "plurality" means two or more unless otherwise specified.
In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.
The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.
The heat pump device in the embodiments of the present disclosure refers to a device constituted by a compressor, a condenser, an evaporator, and the like, and may be a water heater or an air conditioner.
Fig. 1 is a schematic view of a circulation system of a heat pump apparatus according to an embodiment of the present disclosure. As shown in fig. 1, the circulation system of the heat pump apparatus includes a compressor 11, an inner machine heat exchanger 12, an outer machine heat exchanger 13, a throttle valve 14, a liquid storage device 15, and valves a, B, and C. The compressor 11 is connected with the internal heat exchanger 12, the compressor 11 is connected with the external heat exchanger 13, the external heat exchanger 13 is connected with the throttle valve 14, the throttle valve 14 is connected with the internal heat exchanger 12 through a valve C, a pipeline between the throttle valve 14 and the valve C is connected with one end of the valve A, the other end of the valve A extends into the liquid storage device 15 through a pipeline a, a pipeline between the internal heat exchanger 12 and the valve C is connected with one end of the valve B, the other end of the valve B extends into the liquid storage device 15 through a pipeline B, and a port of the pipeline a in the liquid storage device 15 is located above a port of the pipeline B in the liquid storage device 15. The valve A, the valve B and the valve C form a flow control valve for adjusting the amount of a refrigerant in the liquid storage device 15, the valve A and the valve B are opened under the condition that the heat pump equipment is in a heating mode, the refrigerant is stored to the liquid storage device 15 by a circulating system of the heat pump equipment, and the valve C can be closed at the moment and also can have a certain opening degree; under the condition that the heat pump equipment is in a refrigeration mode, the valve A and the valve B are opened, the refrigerant is released to a circulating system of the heat pump equipment from the liquid storage device 15, and the valve C can be closed at the moment and also can have a certain opening degree.
Under the condition that the heat pump equipment is in a heating mode, the refrigerant quantity in the liquid storage device 15 is adjusted to a first set refrigerant quantity L1, then the valve A and the valve B are closed, and the valve C is opened to the maximum opening degree; when the heat pump apparatus is in the cooling mode, the refrigerant quantity in the liquid storage device 15 is adjusted to a second set refrigerant quantity L2, and then the valve a and the valve B are closed, and the valve C is opened to the maximum opening degree.
Fig. 2 is a schematic diagram of a circulation system of a heat pump apparatus according to an embodiment of the present disclosure. As shown in fig. 2, the circulation system of the heat pump apparatus includes a compressor 11, an inner machine heat exchanger 12, an outer machine heat exchanger 13, a throttle valve 14, a liquid storage device 15, and valves D and E. The compressor 11 is connected with the inner machine heat exchanger 12, the compressor 11 is connected with the outer machine heat exchanger 13, the outer machine heat exchanger 13 is connected with the throttle valve 14, the throttle valve 14 is connected with the inner machine heat exchanger 12, a pipeline between the compressor 11 and the outer machine heat exchanger 13 is connected with one end of the valve E, the other end of the valve E extends into the liquid storage device 15 through the pipeline E, the pipeline between the inner machine heat exchanger 12 and the throttle valve 14 is connected with one end of the valve D, the other end of the valve D extends into the liquid storage device 15 through the pipeline D, and a port of the pipeline E in the liquid storage device 15 is located above a port of the pipeline D in the liquid storage device 15. The valve E and the valve D form a flow control valve for adjusting the amount of a refrigerant in the liquid storage device 15, the valve D and the valve E are opened under the condition that the heat pump equipment is in a heating mode, and the refrigerant is stored in the liquid storage device 15 by a circulating system of the heat pump equipment; under the condition that the heat pump equipment is in a refrigeration mode, the valve D and the valve E are opened, and the refrigerant is released to a circulating system of the heat pump equipment from the liquid storage device 15.
Under the condition that the heat pump equipment is in a heating mode, the refrigerant quantity in the liquid storage device 15 is adjusted to a first set refrigerant quantity L1, and then the valve D and the valve E are closed; when the heat pump apparatus is in the cooling mode, the refrigerant amount in the liquid storage device 15 is adjusted to the second set refrigerant amount L2, and then the valve D and the valve E are closed.
FIG. 3 is a schematic diagram of a method for adjusting the superheat degree of exhaust gas of a heat pump device according to an embodiment of the disclosure. The method for adjusting the degree of superheat of the exhaust gas of the heat pump apparatus may be performed by a controller of the heat pump apparatus.
Referring to fig. 3, the method for adjusting the degree of superheat of the device exhaust gas includes:
s301, obtaining the exhaust superheat degree of a compressor of the heat pump device and the operation mode of the heat pump device, wherein the operation mode comprises a heating mode and a cooling mode.
When the heat pump equipment is in a heating mode, a refrigerant of the heat pump system is condensed and releases heat in the internal machine heat exchanger; when the heat pump equipment is in a refrigeration mode, a refrigerant of the heat pump system evaporates and absorbs heat in the internal heat exchanger.
The discharge superheat of the compressor of the heat pump device is a temperature difference between the discharge temperature of the compressor and a saturation temperature corresponding to the condensing pressure in the condenser. And acquiring the exhaust temperature of the compressor and the condensing pressure in the condenser, acquiring the saturation temperature corresponding to the condensing pressure, and calculating the difference between the exhaust temperature and the saturation temperature to obtain the exhaust superheat degree.
And S302, determining a refrigerant storage speed or a refrigerant release speed of the liquid storage device according to the operation mode and the exhaust superheat degree, wherein the refrigerant storage speed corresponds to a heating mode, and the refrigerant release speed corresponds to a refrigerating mode.
The method comprises the steps that the amount of refrigerant needed by the heat pump equipment during heating is usually lower than the amount of refrigerant needed during cooling, the storage speed of the refrigerant corresponds to a heating mode, the storage speed of the refrigerant is determined in the heating mode of the heat pump equipment, the refrigerant needs to be stored into a liquid storage device by a circulating system of the heat pump equipment under the condition that the cooling mode of the heat pump equipment is switched to the heating mode, so that the amount of the refrigerant in the circulating system of the heat pump equipment is reduced, and the storage speed of the refrigerant is the speed of the circulating system for storing the refrigerant into the liquid storage device;
in some application scenarios, the heat pump equipment operates in a cooling mode last time, and operates in a heating mode when the heat pump equipment is started up this time, namely, the heat pump equipment is switched from the cooling mode to the heating mode; or, the heat pump equipment operating in the heating mode enters the defrosting mode, and after the defrosting mode is finished, the heat pump equipment is switched from the cooling mode to the heating mode.
The refrigerant release speed corresponds to a refrigeration mode, and means that the heat pump device determines the refrigerant release speed in the refrigeration mode, and when the heat pump device is switched from the heating mode to the refrigeration mode, the liquid storage device needs to release the refrigerant to the circulation system of the heat pump device to increase the refrigerant quantity of the circulation system of the heat pump device, and the refrigerant release speed is the speed at which the liquid storage device releases the refrigerant to the circulation system.
In some application scenes, the heat pump equipment operates in the heating mode last time, and operates in the cooling mode when the heat pump equipment is started at this time, namely the heat pump equipment is switched from the heating mode to the cooling mode; or, the heat pump equipment operating in the heating mode enters the defrosting mode, that is, the heat pump equipment is switched from the heating mode to the cooling mode.
After the heat pump equipment is switched from the refrigerating mode to the heating mode, the heat pump equipment operates in the heating mode, and at the moment, the circulating system stores the refrigerant into the liquid storage device, so that the refrigerant storage speed is increased, the refrigerant pressure in the system can be quickly reduced, and the exhaust superheat degree is favorably reduced; the method has the advantages of reducing the storage speed of the refrigerant, reducing the pressure of the refrigerant in the system slowly, having the adverse effect on reducing the exhaust superheat degree, and being beneficial to maintaining or improving the exhaust superheat degree, for example, simultaneously improving the frequency of a compressor, and realizing the maintenance or improvement of the exhaust superheat degree.
After the heat pump equipment is switched from the heating mode to the cooling mode, the heat pump equipment operates in the cooling mode, and at the moment, the liquid storage device releases the refrigerant to the circulating system, so that the refrigerant release speed is increased, the refrigerant pressure in the system can be increased quickly, and the exhaust superheat degree is improved; the refrigerant releasing speed is reduced, the pressure of the refrigerant in the system can be slowly increased, the reverse effect is achieved on the increase of the exhaust superheat degree, the exhaust superheat degree is favorably maintained or reduced, and the exhaust superheat degree can be maintained or reduced by reducing the frequency of a compressor, for example.
If the exhaust superheat degree is too low, adjusting the refrigerant storage speed or the refrigerant release speed in the direction beneficial to improving the refrigerant pressure in the circulating system of the heat pump equipment, for example, reducing the refrigerant storage speed or improving the refrigerant release speed; if the exhaust superheat degree is too high, the refrigerant storage speed or the refrigerant release speed is adjusted in the direction beneficial to reducing the refrigerant pressure in the circulating system of the heat pump equipment, for example, the refrigerant storage speed is increased or the refrigerant release speed is reduced, so that the exhaust superheat degree is maintained within a certain range. Under the condition that the exhaust superheat degree is in a certain range, the refrigeration efficiency or the heating efficiency of the heat pump equipment is improved, and the phenomenon of liquid impact can be reduced.
Optionally, determining a refrigerant storage speed or a refrigerant release speed of the liquid storage device according to the operation mode and the exhaust superheat degree comprises: obtaining the current refrigerant quantity of a liquid storage device; obtaining a refrigerant quantity difference value between the set refrigerant quantity and the current refrigerant quantity; and determining the refrigerant storage speed or the refrigerant release speed of the liquid storage device according to the refrigerant quantity difference and the exhaust superheat degree.
The optimal refrigerant quantity required by the heat pump equipment in the heating mode and the optimal refrigerant quantity required by the heat pump equipment in the cooling mode are known values for the heat pump equipment with fixed model and fixed working condition, for example, the optimal refrigerant quantity required by the heat pump equipment in the heating mode and the optimal refrigerant quantity required by the heat pump equipment in the cooling mode are obtained through a test mode. The optimal amount of refrigerant refers to an amount of refrigerant that provides the heat pump device with the highest cooling efficiency or heating efficiency.
After the heat pump device is switched from the cooling mode to the heating mode, the heat pump device operates in the heating mode, and at this time, the refrigerant quantity in the circulation system of the heat pump device needs to be adjusted to the optimal refrigerant quantity required by the heating mode of the heat pump device, that is, the refrigerant quantity stored in the liquid storage device needs to be adjusted to a specific value, for example, the refrigerant quantity in the liquid storage device is adjusted to a first set refrigerant quantity.
After the heat pump device is switched from the heating mode to the cooling mode, the heat pump device operates in the cooling mode, and at this time, the refrigerant quantity in the circulation system of the heat pump device needs to be adjusted to the optimal refrigerant quantity required by the heat pump device in the cooling mode, that is, the refrigerant quantity stored in the liquid storage device needs to be adjusted to a specific value, for example, the refrigerant quantity in the liquid storage device is adjusted to a second set refrigerant quantity, wherein the first set refrigerant quantity is greater than the second set refrigerant quantity.
By adopting the technical scheme, the refrigerant storage speed or the refrigerant release speed of the liquid storage device is adjusted according to the refrigerant quantity difference, the current refrigerant quantity of the liquid storage device can be adjusted to the set refrigerant quantity, namely, the refrigerant quantity in the circulating system of the heat pump equipment is adjusted to the optimal refrigerant quantity.
After the heat pump equipment is switched from the refrigeration mode to the heating mode, the heat pump equipment operates in the heating mode, the refrigerant quantity in a circulating system of the heat pump equipment is greater than the optimal refrigerant quantity required by the heating mode of the heat pump equipment, and the current refrigerant quantity in a liquid storage device is less than a first set refrigerant quantity; after the heat pump equipment is switched from the heating mode to the cooling mode, the heat pump equipment operates in the cooling mode, the refrigerant quantity in a circulating system of the heat pump equipment is smaller than the optimal refrigerant quantity required by the heat pump equipment in the cooling mode, and the current refrigerant in the liquid storage device is larger than the second set refrigerant quantity. The refrigerant quantity difference value between the set refrigerant quantity and the current refrigerant quantity can be obtained through the following modes: in the heating mode, determining the difference value between the first set refrigerant quantity and the current refrigerant quantity as the refrigerant quantity difference value; and under the refrigeration mode, determining the difference between the current refrigerant quantity and the second set refrigerant quantity as the refrigerant quantity difference.
In some application scenarios, the smaller the refrigerant quantity difference value is, the smaller the refrigerant storage speed or the refrigerant release speed of the liquid storage device is. When a circulating system of the heat pump equipment is in a heating cycle, the liquid storage device is in a state of storing a refrigerant, namely, the amount of the refrigerant in the liquid storage device is only increased but not reduced; when the circulating system of the heat pump equipment is in a refrigeration mode, the liquid storage device is in a state of releasing the refrigerant, namely, the refrigerant quantity in the liquid storage device is only reduced and is not increased, the smaller the refrigerant quantity difference value is, the smaller the refrigerant storage speed or the refrigerant release speed of the liquid storage device is, the more accurate the current refrigerant quantity in the liquid storage device can be adjusted to the set refrigerant quantity, and the situation of excessive storage or excessive release is reduced.
Or, determining the refrigerant storage speed or the refrigerant release speed of the liquid storage device according to the refrigerant quantity difference and the exhaust superheat degree, which may include: obtaining a refrigerant storage speed or a refrigerant release speed corresponding to the exhaust superheat degree; obtaining estimated time length for enabling the refrigerant quantity difference value to become zero according to the refrigerant storage speed or the refrigerant release speed; and under the condition that the estimated time length is less than the set time length, re-determining the refrigerant storage speed or the refrigerant release speed according to the refrigerant quantity difference value and the preset time length, so that the new estimated time length when the refrigerant quantity difference value becomes zero is greater than or equal to the set time length.
For example, when the unit of the refrigerant storage speed or the refrigerant release speed is mL/s and the unit of the refrigerant quantity difference is cm, the product of the refrigerant quantity difference and the cross-sectional area of the liquid storage device can be calculated, and then the product is at the refrigerant storage speed or the refrigerant release speed, so that the estimated time length can be obtained.
The method comprises the steps of obtaining a first refrigerant quantity difference value between a first set refrigerant quantity and a current refrigerant quantity when the heat pump equipment is in a heating mode, determining a first estimated time length when the current refrigerant quantity reaches the first set refrigerant quantity according to the first refrigerant quantity difference value and a refrigerant storage speed, and re-determining the refrigerant storage speed according to the first refrigerant quantity difference value and the first set time length under the condition that the first estimated time length is smaller than the first set time length.
When the heat pump equipment is in a refrigeration mode, obtaining a second refrigerant quantity difference value between the current refrigerant quantity and a second set refrigerant quantity, and determining a second estimated time length when the current refrigerant quantity reaches the second set refrigerant quantity according to the second refrigerant quantity difference value and the refrigerant release speed; and under the condition that the second estimated time length is less than a second set time length, re-determining the refrigerant release speed according to the second refrigerant quantity difference and the second set time length.
The estimated time length comprises a first preset time length and a second estimated time length, the set time length comprises a first set time length and a second set time length, and the size relation between the first set time length and the second set time length is not specifically limited.
In the above technical solution, when the estimated time length is less than the set time length, it is described that the current refrigerant quantity in the liquid storage device will reach the set refrigerant quantity, at this time, the refrigerant storage speed or the refrigerant release speed is reduced, so that the new estimated time length during which the refrigerant quantity difference becomes zero is greater than or equal to the set time length, thereby reducing the phenomenon that the liquid storage device stores the refrigerant excessively or releases the refrigerant.
Further, after the estimated time length for making the refrigerant quantity difference become zero is obtained according to the refrigerant storage speed or the refrigerant release speed, if the estimated time length is greater than or equal to the set time length, the flow control valve of the liquid storage device is controlled according to the refrigerant release speed or the refrigerant storage speed.
By setting a set time length, when the difference value between the current refrigerant quantity in the liquid storage device and the refrigerant quantity of the set refrigerant is larger, the refrigerant storage speed or the refrigerant release speed is not reduced, so that the time length required for adjusting the current refrigerant quantity to the set refrigerant quantity is reduced, namely, the time length for the refrigerant quantity in a circulating system of the heat pump equipment to reach the optimal refrigerant quantity is reduced; when the difference value between the current refrigerant quantity in the liquid storage device and the refrigerant quantity of the set refrigerant quantity is small, the refrigerant storage speed or the refrigerant release speed is reduced, so that the phenomenon that the liquid storage device stores the refrigerant excessively or releases the refrigerant is reduced, the current refrigerant quantity in the liquid storage device is accurately adjusted to the set refrigerant quantity, and namely, the refrigerant quantity in a circulating system of the heat pump equipment is accurately adjusted to the optimal refrigerant quantity.
That is, a balance is obtained between quickly adjusting the refrigerant quantity of the circulation system of the heat pump apparatus to the optimum refrigerant quantity and accurately adjusting the refrigerant quantity of the circulation system of the heat pump apparatus to the optimum refrigerant quantity.
In practical application, the current refrigerant amount is usually obtained by detecting the liquid level in the liquid storage device, and a larger set time length can be set under the condition that the liquid level of the liquid storage device changes faster, namely the cross-sectional area of the liquid storage device is smaller; when the liquid level of the liquid storage device changes slowly, that is, the cross-sectional area of the liquid storage device is large, a small set time length can be set.
The embodiment of the present disclosure does not limit the specific value of the set time period, and one skilled in the art can determine an appropriate set time period according to the actual cross-sectional area of the liquid storage device.
The refrigerant storage speed or the refrigerant release speed corresponding to the degree of superheat of the exhaust gas can be obtained by: in the heating mode, if the exhaust superheat degree is higher than a first set temperature, determining the refrigerant storage speed as a first storage speed; if the exhaust superheat degree is less than or equal to a second set temperature, determining the refrigerant storage speed as a second storage speed, wherein the first storage speed is greater than the second storage speed; in the refrigeration mode, if the exhaust superheat degree is greater than a second set temperature, determining the refrigerant release speed as a first release speed; and if the exhaust superheat degree is less than or equal to a second set temperature, determining the refrigerant release speed as a second release speed, wherein the first release speed is less than the second release speed.
And when the refrigerant quantity difference value is larger than the set refrigerant quantity difference value, executing the following steps: obtaining a refrigerant storage speed or a refrigerant release speed corresponding to the exhaust superheat degree; obtaining estimated time length for enabling the refrigerant quantity difference value to become zero according to the refrigerant storage speed or the refrigerant release speed; and under the condition that the estimated time length is less than the set time length, re-determining the refrigerant storage speed or the refrigerant release speed according to the refrigerant quantity difference value and the preset time length, so that the new estimated time length when the refrigerant quantity difference value becomes zero is greater than or equal to the set time length.
And determining the refrigerant storage speed or the refrigerant release speed as zero under the condition that the refrigerant quantity difference value is less than or equal to the set refrigerant quantity difference value.
Setting a refrigerant quantity difference value as a quit condition for adjusting the refrigerant quantity in a circulating system of the heat pump equipment, wherein in the process of adjusting the refrigerant storage speed or the refrigerant release speed of the liquid storage device through the steps, the determined refrigerant storage speed or the determined refrigerant release speed is smaller and smaller along with the smaller refrigerant quantity difference value, but the precision of a flow control valve of the liquid storage device is limited, and in the case that the refrigerant quantity difference value is smaller than or equal to the set refrigerant quantity difference value, quitting the adjusting process of the refrigerant quantity in the circulating system of the heat pump device so as to reduce the phenomenon of determining smaller meaningless refrigerant storage speed or refrigerant release speed (for example, the refrigerant storage speed or the refrigerant release speed which is smaller than the minimum precision of the flow control valve is the meaningless refrigerant storage speed or the refrigerant release speed).
And S303, adjusting a flow control valve for controlling the liquid storage device to an opening corresponding to the refrigerant storage speed or the refrigerant release speed.
For example, the corresponding relationship between the inlet pressure, the outlet pressure, the refrigerant storage speed or the refrigerant release speed of the liquid storage device and the opening degree of the flow control valve may be stored in the database, and after the inlet pressure, the outlet pressure, the refrigerant storage speed or the refrigerant release speed of the liquid storage device is obtained, the opening degree of the flow control valve corresponding to the refrigerant storage speed or the refrigerant release speed may be obtained.
Or, the corresponding relationship between the compressor operating frequency, the refrigerant storage speed or the refrigerant release speed, and the opening degree of the flow control valve may be stored in the database, and after the compressor operating frequency, the refrigerant storage speed or the refrigerant release speed is obtained, the opening degree of the flow control valve corresponding to the refrigerant storage speed or the refrigerant release speed may be obtained through the database.
In the heating mode, the heat pump equipment (such as a water heater) needs less refrigerant, the refrigerant needs to be stored in the liquid storage device through the circulating system, and the exhaust superheat degree is adjusted by adjusting the refrigerant storage speed; in a refrigeration mode, a large amount of refrigerants are needed by the heat pump equipment, the refrigerants need to be released into the circulating system by the liquid storage device, and the exhaust superheat degree is adjusted by adjusting the refrigerant release speed, so that on one hand, the refrigerant amount in the circulating system of the heat pump equipment can meet the requirement of the operation mode, and the efficiency of the heat pump equipment is improved; on the other hand, the exhaust superheat degree can be adjusted by adjusting the refrigerant release speed or the refrigerant storage speed, the refrigerant quantity and the exhaust superheat degree in the circulating system can be considered, and the working efficiency of the heat pump equipment is improved.
In order to adjust the degree of superheat of the exhaust gas to the set temperature more quickly, the method for adjusting the degree of superheat of the exhaust gas of the heat pump apparatus may further include: when the exhaust superheat degree is higher than the set temperature, reducing the frequency of a compressor and/or increasing the rotating speed of a fan of the heat pump equipment; and under the condition that the exhaust superheat degree is less than or equal to the set temperature, increasing the frequency of the compressor and/or reducing the rotating speed of a fan of the heat pump equipment.
Fig. 4 is a schematic diagram of an apparatus for adjusting the degree of superheat of exhaust gas of a heat pump device according to an embodiment of the disclosure. The device for adjusting the degree of superheat of the exhaust gas of the heat pump equipment is realized in the form of software, hardware or a combination of the software and the hardware, and as shown in a combined mode in fig. 4, the device for adjusting the degree of superheat of the exhaust gas of the heat pump equipment comprises: an obtaining module 41, a first determining module 42 and a first control module 43, wherein the obtaining module 41 is configured to obtain a discharge superheat degree of a compressor of the heat pump device and an operation mode of the heat pump device, and the operation mode includes a heating mode and a cooling mode; the first determining module 42 is configured to determine a refrigerant storage speed or a refrigerant release speed of the liquid storage device according to the operation mode and the exhaust superheat degree, wherein the refrigerant storage speed corresponds to a heating mode, and the refrigerant release speed corresponds to a cooling mode; the first control module 43 is configured to adjust a flow control valve for controlling the liquid storage device to an opening degree corresponding to a refrigerant storage speed or a refrigerant release speed.
In the heating mode, the heat pump equipment (such as a water heater) needs less refrigerant, the refrigerant needs to be stored in the liquid storage device through the circulating system, and the exhaust superheat degree is adjusted by adjusting the refrigerant storage speed; in a refrigeration mode, a large amount of refrigerants are needed by the heat pump equipment, the refrigerants need to be released into the circulating system by the liquid storage device, and the exhaust superheat degree is adjusted by adjusting the refrigerant release speed, so that on one hand, the refrigerant amount in the circulating system of the heat pump equipment can meet the requirement of the operation mode, and the efficiency of the heat pump equipment is improved; on the other hand, the exhaust superheat degree can be adjusted by adjusting the refrigerant release speed or the refrigerant storage speed, the refrigerant quantity and the exhaust superheat degree in the circulating system can be considered, and the working efficiency of the heat pump equipment is improved.
Optionally, the first determining module includes a first obtaining unit, a second obtaining unit, and a determining unit, where the first obtaining unit is configured to obtain a current refrigerant quantity of the liquid storage device;
the second obtaining unit is configured to obtain a refrigerant quantity difference value between the set refrigerant quantity and the current refrigerant quantity;
the determining unit is configured to determine a refrigerant storage speed or a refrigerant release speed of the liquid storage device according to the refrigerant quantity difference and the exhaust superheat degree.
Optionally, the determining unit is specifically configured to: obtaining a refrigerant storage speed or a refrigerant release speed corresponding to the exhaust superheat degree; obtaining estimated time length for enabling the refrigerant quantity difference value to become zero according to the refrigerant storage speed or the refrigerant release speed; and under the condition that the estimated time length is less than the set time length, re-determining the refrigerant storage speed or the refrigerant release speed according to the refrigerant quantity difference value and the preset time length, so that the new estimated time length when the refrigerant quantity difference value becomes zero is greater than or equal to the set time length.
Optionally, obtaining a refrigerant storage speed or a refrigerant release speed corresponding to the degree of superheat of the exhaust gas includes: in the heating mode, if the exhaust superheat degree is higher than a first set temperature, determining the refrigerant storage speed as a first storage speed; if the exhaust superheat degree is less than or equal to a second set temperature, determining the refrigerant storage speed as a second storage speed, wherein the first storage speed is greater than the second storage speed; in the refrigeration mode, if the exhaust superheat degree is greater than a second set temperature, determining the refrigerant release speed as a first release speed; and if the exhaust superheat degree is less than or equal to a second set temperature, determining the refrigerant release speed as a second release speed, wherein the first release speed is less than the second release speed.
Optionally, the first obtaining unit is specifically configured to: in the heating mode, determining the difference value between the first set refrigerant quantity and the current refrigerant quantity as the refrigerant quantity difference value; in the refrigeration mode, determining the difference value between the current refrigerant quantity and the second set refrigerant quantity as the refrigerant quantity difference value; the first set refrigerant quantity is larger than the second set refrigerant quantity.
Optionally, the device for adjusting the degree of superheat of the exhaust gas of the heat pump apparatus further includes a second determination module, and the second determination module is configured to determine the refrigerant storage speed or the refrigerant release speed to be zero when the refrigerant quantity difference is smaller than or equal to the set refrigerant quantity difference.
Optionally, the device for adjusting the degree of superheat of the exhaust gas of the heat pump equipment further comprises a second control module and a third control module, wherein the second control module is configured to reduce the frequency of the compressor and/or increase the fan speed of the heat pump equipment under the condition that the degree of superheat of the exhaust gas is greater than the set temperature; the third control module is configured to increase the frequency of the compressor and/or decrease the fan speed of the heat pump device in the case that the degree of superheat of the exhaust gas is less than or equal to a set temperature.
In some embodiments, the device for adjusting the degree of superheat of the exhaust gas of the heat pump apparatus includes a processor and a memory storing program instructions, and the processor is configured to execute the method for adjusting the degree of superheat of the exhaust gas of the heat pump apparatus provided in the foregoing embodiments when executing the program instructions.
Fig. 5 is a schematic diagram of an apparatus for adjusting the degree of superheat of exhaust gas of a heat pump device according to an embodiment of the disclosure. As shown in fig. 5, the device for adjusting the degree of superheat of the exhaust gas of the heat pump apparatus includes:
a processor (processor)51 and a memory (memory)52, and may further include a Communication Interface (Communication Interface)53 and a bus 54. The processor 51, the communication interface 53 and the memory 52 may communicate with each other through the bus 54. The communication interface 53 may be used for information transfer. The processor 51 may invoke logic instructions in the memory 52 to perform the method for adjusting the superheat of the heat pump device discharge air provided by the previous embodiment.
Furthermore, the logic instructions in the memory 52 may be implemented in software functional units and stored in a computer readable storage medium when sold or used as a stand-alone product.
The memory 52 is a computer-readable storage medium, and can be used for storing software programs, computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 51 executes the functional application and data processing by executing the software program, instructions and modules stored in the memory 52, that is, implements the method in the above-described method embodiments.
The memory 52 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. Further, the memory 52 may include high speed random access memory, and may also include non-volatile memory.
The embodiment of the disclosure provides a heat pump device, which comprises the device for adjusting the degree of superheat of exhaust gas of the heat pump device provided by the embodiment.
The heat pump device can be an air conditioner or a water heater.
The embodiment of the disclosure provides a computer-readable storage medium, which stores computer-executable instructions configured to execute the method for adjusting the degree of superheat of exhaust gas of a heat pump device provided by the foregoing embodiment.
The embodiment of the disclosure provides a computer program product, which comprises a computer program stored on a computer readable storage medium, wherein the computer program comprises program instructions, and when the program instructions are executed by a computer, the computer is caused to execute the method for adjusting the exhaust superheat degree of the heat pump device provided by the foregoing embodiment.
The computer-readable storage medium described above may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.
The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method in the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes, and may also be a transient storage medium.
The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. Furthermore, the words used in the specification are words of description only and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method or device comprising the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.
Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software may depend upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments. It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit may be merely a division of a logical function, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Claims (10)
1. A method for adjusting superheat of exhaust gas of a heat pump apparatus, the heat pump apparatus including a liquid storage device, the method comprising:
obtaining the exhaust superheat degree of a compressor of heat pump equipment and the operation mode of the heat pump equipment, wherein the operation mode comprises a heating mode and a cooling mode;
determining a refrigerant storage speed or a refrigerant release speed of the liquid storage device according to the operation mode and the exhaust superheat degree, wherein the refrigerant storage speed corresponds to the heating mode, and the refrigerant release speed corresponds to the refrigeration mode;
and adjusting a flow control valve for controlling the liquid storage device to an opening corresponding to the refrigerant storage speed or the refrigerant release speed.
2. The method of claim 1, wherein determining a refrigerant storage rate or a refrigerant release rate of the liquid storage device based on the operating mode and the discharge superheat comprises:
obtaining the current refrigerant quantity of the liquid storage device;
obtaining a refrigerant quantity difference value between a set refrigerant quantity and the current refrigerant quantity;
and determining the refrigerant storage speed or the refrigerant release speed of the liquid storage device according to the refrigerant quantity difference and the exhaust superheat degree.
3. The method of claim 2, wherein determining the refrigerant storage speed or the refrigerant release speed of the liquid storage device according to the refrigerant quantity difference and the exhaust superheat degree comprises:
obtaining the refrigerant storage speed or the refrigerant release speed corresponding to the exhaust superheat degree;
obtaining estimated time length for enabling the refrigerant quantity difference value to become zero according to the refrigerant storage speed or the refrigerant release speed;
and under the condition that the estimated time length is less than the set time length, re-determining the refrigerant storage speed or the refrigerant release speed according to the refrigerant quantity difference value and the preset time length, so that the new estimated time length when the refrigerant quantity difference value becomes zero is greater than or equal to the set time length.
4. The method of claim 3, wherein obtaining the refrigerant storage rate or the refrigerant release rate corresponding to the degree of superheat of the discharge gas comprises:
in the heating mode, if the exhaust superheat degree is greater than a first set temperature, determining that the refrigerant storage speed is a first storage speed; if the exhaust superheat degree is less than or equal to a second set temperature, determining that the refrigerant storage speed is a second storage speed, wherein the first storage speed is greater than the second storage speed;
in the refrigeration mode, if the exhaust superheat degree is greater than a second set temperature, determining the refrigerant release speed as a first release speed; and if the exhaust superheat degree is less than or equal to a second set temperature, determining the refrigerant release speed as a second release speed, wherein the first release speed is less than the second release speed.
5. The method of claim 2, wherein obtaining a refrigerant quantity difference between a set refrigerant quantity and the current refrigerant quantity comprises:
under the heating mode, determining the difference value between a first set refrigerant quantity and the current refrigerant quantity as the refrigerant quantity difference value;
in a refrigeration mode, determining a difference value between the current refrigerant quantity and a second set refrigerant quantity as the refrigerant quantity difference value;
the first set refrigerant amount is larger than the second set refrigerant amount.
6. The method of claim 2, further comprising:
and determining the refrigerant storage speed or the refrigerant release speed as zero when the refrigerant quantity difference is smaller than or equal to a set refrigerant quantity difference.
7. The method of any of claims 1 to 6, further comprising:
under the condition that the exhaust superheat degree is larger than a set temperature, reducing the frequency of the compressor and/or increasing the rotating speed of a fan of the heat pump equipment;
and under the condition that the exhaust superheat degree is smaller than or equal to the set temperature, increasing the frequency of the compressor, and/or reducing the rotating speed of a fan of the heat pump equipment.
8. An apparatus for adjusting superheat of exhaust gas of a heat pump device, comprising:
the device comprises an obtaining module and a control module, wherein the obtaining module is configured to obtain a discharge superheat degree of a compressor of a heat pump device and operation modes of the heat pump device, and the operation modes comprise a heating mode and a cooling mode;
the first determining module is configured to determine a refrigerant storage speed or a refrigerant release speed of the liquid storage device according to the operation mode and the exhaust superheat degree, wherein the refrigerant storage speed corresponds to the heating mode, and the refrigerant release speed corresponds to the cooling mode;
the first control module is configured to adjust a flow control valve for controlling the liquid storage device to an opening degree corresponding to the refrigerant storage speed or the refrigerant release speed.
9. An apparatus for adjusting the degree of superheat exhausted by a heat pump device, comprising a processor and a memory storing program instructions, characterized in that the processor is configured to execute the method for adjusting the degree of superheat exhausted by a heat pump device according to any one of claims 1 to 7 when executing the program instructions.
10. A heat pump apparatus characterized by comprising the device for adjusting the degree of superheat of exhaust gas of a heat pump apparatus as claimed in claim 8 or 9.
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| CN202110838821.2A CN113639485B (en) | 2021-07-23 | 2021-07-23 | Method and device for adjusting exhaust superheat degree of heat pump equipment and heat pump equipment |
| PCT/CN2022/096115 WO2023000828A1 (en) | 2021-07-23 | 2022-05-31 | Method and apparatus for adjusting exhaust superheat degree of heat pump device, and heat pump device |
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| CN202110838821.2A CN113639485B (en) | 2021-07-23 | 2021-07-23 | Method and device for adjusting exhaust superheat degree of heat pump equipment and heat pump equipment |
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