CN113983692B - Method and device for controlling hot water supply equipment and hot water supply equipment - Google Patents
Method and device for controlling hot water supply equipment and hot water supply equipment Download PDFInfo
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- CN113983692B CN113983692B CN202111165911.6A CN202111165911A CN113983692B CN 113983692 B CN113983692 B CN 113983692B CN 202111165911 A CN202111165911 A CN 202111165911A CN 113983692 B CN113983692 B CN 113983692B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 217
- 238000000034 method Methods 0.000 title claims abstract description 61
- 239000003507 refrigerant Substances 0.000 claims abstract description 55
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 17
- 238000005265 energy consumption Methods 0.000 claims description 11
- 238000013459 approach Methods 0.000 abstract description 2
- 230000001276 controlling effect Effects 0.000 description 27
- 238000010586 diagram Methods 0.000 description 13
- 238000003860 storage Methods 0.000 description 13
- 230000006870 function Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 6
- 238000004590 computer program Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
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- 238000012360 testing method Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The application relates to the technical field of hot water supply, and discloses a method for controlling hot water supply equipment, which comprises the following steps: determining the exhaust superheat degree of the compressor; under the condition that the superheat degree of the exhaust gas is larger than a first threshold value, determining a control scheme of the hot water supply equipment according to the outlet water temperature of the heat exchanger of the hot water supply equipment and the saturation temperature corresponding to the pressure of the refrigerant side of the heat exchanger; the hot water supply apparatus is controlled to execute a control scheme. In this way, after the hot water supply equipment is controlled to execute the scheme, the saturated temperature corresponding to the pressure of the refrigerant side of the heat exchanger gradually approaches the outlet water temperature of the heat exchanger, so that the energy efficiency and the stability of the equipment operation are effectively enhanced. The application also discloses a device for controlling the hot water supply equipment and the hot water supply equipment.
Description
Technical Field
The present application relates to the field of hot water supply technology, for example, to a method and apparatus for controlling a hot water supply device, and a hot water supply device.
Background
At present, in the running process of the hot water supply equipment, in some cases, the conditions of reduced energy efficiency and increased energy consumption of the hot water supply equipment are easily caused by higher exhaust pressure. However, the existing control mode of the hot water supply equipment is that under the condition of lower exhaust superheat degree, the exhaust superheat degree is improved, so that the hot water equipment has enough superheat degree to ensure the stable operation of the equipment. However, the control mode can only ensure the stable operation of the equipment, and can not further reduce the energy consumption of the equipment on the premise of the stable operation of the equipment so as to meet the requirements of users.
Therefore, how to further reduce the energy consumption of the equipment on the premise of ensuring the stable operation of the equipment becomes a technical problem to be solved.
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, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.
The embodiment of the disclosure provides a method and a device for controlling hot water supply equipment and the hot water supply equipment, so that the energy consumption of the equipment is further reduced on the premise that the hot water supply equipment stably operates.
In some embodiments, the method comprises: determining the exhaust superheat degree of the compressor; under the condition that the superheat degree of the exhaust gas is larger than a first threshold value, determining a control scheme of the hot water supply equipment according to the outlet water temperature of the heat exchanger of the hot water supply equipment and the saturation temperature corresponding to the pressure of the refrigerant side of the heat exchanger; the hot water supply apparatus is controlled to execute a control scheme.
In some embodiments, the method comprises: calculating a difference value between a saturation temperature corresponding to the pressure of the refrigerant side of the heat exchanger and the outlet water temperature of the heat exchanger of the hot water supply equipment; a control scheme of the hot water supply apparatus is determined according to the absolute value of the difference.
In some embodiments, the method comprises: in the case that the absolute value of the difference is greater than the second threshold value, increasing the opening degree of the expansion valve at the outlet side of the heat exchanger is taken as a control scheme of the hot water supply device; in the case that the absolute value of the difference is less than or equal to the second threshold value, taking the determined control scheme of the compressor as the control scheme of the hot water supply apparatus; wherein the second threshold is lower than the first threshold.
In some embodiments, the method comprises: acquiring a set temperature of the hot water supply device; when the temperature difference value between the saturated temperature corresponding to the pressure of the refrigerant side of the heat exchanger and the set temperature is larger than a third threshold value, the operation frequency of the compressor is reduced, and the control scheme of the compressor is determined; wherein the third threshold is lower than the second threshold.
In some embodiments, the method comprises: and controlling the hot water supply equipment to stop executing the control scheme under the condition that the temperature difference value between the saturated temperature corresponding to the pressure of the refrigerant side of the heat exchanger and the set temperature is smaller than a third threshold value.
In some embodiments, the method comprises: according to the preset corresponding relation, a control scheme corresponding to the water outlet temperature and the saturation temperature of the heat exchanger of the hot water supply equipment is determined as the control scheme of the hot water supply equipment.
In some embodiments, the method comprises: obtaining the exhaust temperature of the compressor and the saturation temperature corresponding to the exhaust pressure of the compressor; the difference between the discharge temperature and the saturation temperature is determined as the discharge superheat of the compressor.
In some embodiments, the method comprises: and under the condition that the exhaust superheat degree is smaller than or equal to a first threshold value, reducing the opening degree of the expansion valve at the outlet side of the heat exchanger so as to increase the exhaust superheat degree.
In some embodiments, the apparatus comprises: comprising a processor and a memory storing program instructions, the processor being configured to perform the method for controlling a hot water supply device as described before when the program instructions are run.
In some embodiments, the hot water supply apparatus includes: the aforementioned means for controlling the hot water supply device.
The method and the device for controlling the hot water supply equipment and the hot water supply equipment provided by the embodiment of the disclosure can realize the following technical effects: the method comprises the steps of determining the exhaust superheat degree of a compressor, determining that the exhaust superheat degree of the compressor is enough to maintain stable operation of hot water supply equipment under the condition that the exhaust superheat degree is larger than a first threshold value, determining a control scheme for reducing equipment energy consumption by combining the obtained outlet water temperature of the heat exchanger and the saturation temperature corresponding to the pressure of the refrigerant side of the heat exchanger, and controlling the hot water supply equipment to execute the scheme. In this way, after the hot water supply equipment is controlled to execute the scheme, the saturation temperature corresponding to the pressure of the refrigerant side of the heat exchanger can be as close as possible to the outlet water temperature of the heat exchanger, so that the energy efficiency and the stability of the equipment operation are effectively enhanced.
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 by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:
FIG. 1 is a schematic diagram of a method for controlling a hot water supply apparatus provided by an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a method for determining a control scheme provided by an embodiment of the present disclosure;
FIG. 3 is a schematic illustration of a method for determining a compressor control scheme provided by an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of another method for controlling a hot water supply apparatus provided by an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of a method for determining superheat of an exhaust gas provided by an embodiment of the present disclosure;
fig. 6 is a schematic view of an apparatus for controlling a hot water supply device provided in an embodiment of the present disclosure.
Detailed Description
So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. 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 still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.
The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
The term "plurality" means two or more, unless otherwise indicated.
In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.
The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.
The term "corresponding" may refer to an association or binding relationship, and the correspondence between a and B refers to an association or binding relationship between a and B.
FIG. 1 is a schematic diagram of a method for controlling a hot water supply apparatus provided by an embodiment of the present disclosure; as shown in connection with fig. 1, an embodiment of the present disclosure provides a method for controlling a hot water supply apparatus including a compressor; the method comprises the following steps:
s11, the hot water supply device determines the exhaust superheat degree of the compressor.
And S12, under the condition that the superheat degree of the exhaust gas is larger than a first threshold value, the control scheme of the hot water supply equipment is determined according to the outlet water temperature of the heat exchanger and the saturation temperature corresponding to the pressure of the refrigerant side of the heat exchanger.
S13, the hot water supply device controls the hot water supply device to execute a control scheme.
In this scheme, the hot water supply device may be a home appliance capable of supplying hot water to a user. In one example, the hot water supply device may be a water heater. Specifically, the hot water supply device is provided with a compressor, an exhaust port of the compressor is connected with an inlet of a heat exchanger, an outlet of the heat exchanger is connected with an expansion valve, and the other end of the expansion valve is a refrigerant inlet of the hot water supply device. Specifically, the hot water supply apparatus may determine the degree of superheat of the exhaust gas of the compressor during operation of the hot water supply apparatus to determine the operation condition of the hot water supply apparatus. Specifically, the hot water supply apparatus may acquire the discharge pressure of the compressor. And determining the saturation temperature corresponding to the obtained exhaust pressure of the compressor according to the preset corresponding relation between the exhaust pressure of the compressor and the saturation temperature. And after the exhaust temperature of the compressor is obtained, determining the difference between the exhaust temperature and the saturation temperature as the exhaust superheat degree of the compressor. Further, it may be determined whether the discharge superheat degree of the compressor can maintain the stable operation of the hot water supply apparatus. Thus, the first threshold value may be set in advance. Here, the first threshold value may be a discharge superheat degree of the compressor sufficient to maintain stable operation of the hot water supply apparatus. It will be appreciated that the first threshold may be preset in connection with the operating frequency of the compressor or the ambient temperature conditions. Further, when the hot water supply device determines that the exhaust superheat degree is greater than the first threshold value, the exhaust superheat degree of the compressor is determined to be enough to maintain the stable operation of the hot water supply device, so that the saturated temperature corresponding to the pressure of the refrigerant side of the heat exchanger of the hot water supply device can be adjusted on the premise of stable operation of the hot water supply device, and the saturated temperature is as close to the outlet water temperature of the heat exchanger as possible, so that the energy efficiency of the hot water supply device is effectively improved. Specifically, the hot water supply device can obtain the outlet water temperature of the heat exchanger and the pressure of the refrigerant side of the heat exchanger through the sensor, and determine the saturation temperature corresponding to the pressure of the refrigerant side of the heat exchanger through the pre-stored corresponding relation between the pressure of the refrigerant side of the heat exchanger and the saturation temperature. In this way, the control scheme of the hot water supply device for regulating the energy consumption of the device can be determined in combination with the outlet water temperature of the heat exchanger and the saturation temperature corresponding to the pressure on the refrigerant side of the heat exchanger. And controlling the hot water supply apparatus to execute the determined control scheme.
By adopting the method for controlling the hot water supply equipment provided by the embodiment of the disclosure, the exhaust superheat degree of the compressor is determined, and under the condition that the exhaust superheat degree is larger than the first threshold value, the exhaust superheat degree of the compressor is determined to be enough to maintain the stable operation of the hot water supply equipment, and the control scheme for reducing the energy consumption of the equipment is determined by combining the acquired outlet water temperature of the heat exchanger and the saturation temperature corresponding to the pressure of the refrigerant side of the heat exchanger, and the hot water supply equipment is controlled to execute the scheme. In this way, after the hot water supply equipment is controlled to execute the scheme, the saturation temperature corresponding to the pressure of the refrigerant side of the heat exchanger can be as close as possible to the outlet water temperature of the heat exchanger, so that the energy efficiency and the stability of the equipment operation are effectively enhanced.
FIG. 2 is a schematic diagram of a method for determining a control scheme provided by an embodiment of the present disclosure; referring to fig. 2, optionally, S12, the hot water supply device determines a control scheme of the hot water supply device according to a water outlet temperature of the heat exchanger and a saturation temperature corresponding to a pressure of a refrigerant side of the heat exchanger, including:
s21, the hot water supply device calculates a difference value between a saturated temperature corresponding to the pressure of the refrigerant side of the heat exchanger and the outlet water temperature of the heat exchanger of the hot water supply device.
S22, the hot water supply device determines a control scheme of the hot water supply device according to the absolute value of the difference value.
In the embodiment of the disclosure, after the saturation temperature corresponding to the pressure of the refrigerant side of the heat exchanger and the outlet water temperature of the heat exchanger of the hot water supply device are obtained, the difference value between the saturation temperature corresponding to the pressure of the refrigerant side of the heat exchanger and the outlet water temperature of the heat exchanger of the hot water supply device is calculated. And judging the deviation condition of the saturated temperature corresponding to the pressure of the refrigerant side of the heat exchanger and the outlet water temperature of the heat exchanger. It will be appreciated that when the hot water supply apparatus is operating to heat, the outlet water temperature of the heat exchanger will be slightly higher than the saturation temperature corresponding to the pressure on the refrigerant side of the heat exchanger. When the hot water supply equipment operates for refrigeration, the outlet water temperature of the heat exchanger is slightly lower than the saturation temperature corresponding to the pressure of the refrigerant side of the heat exchanger. Therefore, in order to effectively reduce the system power consumption on the premise of stable operation of the hot water supply apparatus, the absolute value of the difference value may be determined, and the control scheme of the hot water supply apparatus may be determined in combination with the determined absolute value. Here, the control scheme of the hot water supply apparatus may include a control scheme of the compressor or a control scheme of the expansion valve. In this way, on the premise that the hot water supply equipment stably operates, a more reasonable control scheme of the hot water supply equipment can be determined, and energy consumption is effectively reduced.
Optionally, S22, the hot water supply apparatus determines a control scheme of the hot water supply apparatus according to an absolute value of the difference value, including:
in case the absolute value of the difference is greater than the second threshold, the hot water supply apparatus will increase the expansion valve opening on the outlet side of the heat exchanger as a control scheme of the hot water supply apparatus.
In the case where the absolute value of the difference is less than or equal to the second threshold value, the hot water supply apparatus regards the determined control scheme of the compressor as the control scheme of the hot water supply apparatus.
Wherein the second threshold is lower than the first threshold.
In the embodiment of the disclosure, after determining the absolute value of the difference value, if the absolute value of the difference value is larger, it is proved that the saturation temperature corresponding to the pressure on the refrigerant side of the heat exchanger is far from the outlet water temperature of the heat exchanger, and if the absolute value of the difference value is smaller, it is proved that the saturation temperature corresponding to the pressure on the refrigerant side of the heat exchanger is near to the outlet water temperature of the heat exchanger. It can be appreciated that a more reasonable air conditioner control scheme can be determined by combining the deviation situation of the saturation temperature corresponding to the pressure of the refrigerant side of the heat exchanger and the outlet water temperature of the heat exchanger. In particular, the second threshold value may be set in the hot water supply device. Here, the second threshold value may be preset in the hot water supply apparatus. For example, the second threshold may be 1. Further, in the case where the absolute value of the difference is greater than the second threshold value, the expansion valve opening degree on the outlet side of the heat exchanger may be increased as a control scheme of the hot water supply apparatus. In this way, under the condition that the saturation temperature corresponding to the pressure of the refrigerant side of the heat exchanger is far away from the water outlet temperature of the heat exchanger, the opening degree of the expansion valve at the outlet side of the heat exchanger can be increased, so that the refrigerant flow at the outlet side of the heat exchanger is effectively increased, the difference between the saturation temperature corresponding to the pressure of the refrigerant side of the heat exchanger and the water outlet temperature of the heat exchanger is further reduced, and the energy efficiency of equipment operation is effectively improved. In another example, the determined control scheme of the compressor may be taken as the control scheme of the hot water supply apparatus in the case where the absolute value of the difference value is less than or equal to the second threshold value. In this way, in the case that the saturation temperature corresponding to the pressure on the refrigerant side of the heat exchanger is closer to the outlet water temperature of the heat exchanger, in order to further adjust the saturation temperature corresponding to the pressure on the refrigerant side of the heat exchanger so as to be as close to the outlet water temperature of the heat exchanger as possible. The operation frequency of the compressor can be adjusted, so that the difference value between the saturation temperature corresponding to the pressure of the refrigerant side of the heat exchanger and the water outlet temperature of the heat exchanger is further reduced by adjusting the operation state of the compressor, and the energy efficiency of equipment operation is effectively improved.
Alternatively, as an optimized solution, increasing the opening degree of the expansion valve at the outlet side of the heat exchanger may include: the expansion valve is controlled to increase the expansion valve opening at the outlet side of the heat exchanger at a rate of increasing Z steps every S1 seconds. Here, S1 and Z may be set in advance. For example, S1 may be 20 seconds and Z may be 5 steps, in which way the opening degree of the expansion valve can be periodically increased, preventing the occurrence of system instability caused by too fast an increase in the opening degree of the expansion valve.
FIG. 3 is a schematic illustration of a method for determining a compressor control scheme provided by an embodiment of the present disclosure; as shown in connection with fig. 3, optionally, the hot water supply apparatus determines a control scheme of the compressor, including:
s31, the hot water supply device acquires the set temperature.
S32, under the condition that the temperature difference value between the saturated temperature corresponding to the pressure of the refrigerant side of the heat exchanger and the set temperature is larger than a third threshold value, the hot water supply equipment reduces the operation frequency of the compressor and determines the operation frequency as a control scheme of the compressor.
Wherein the third threshold is lower than the second threshold.
In this scheme, if it is determined that the absolute value of the difference is less than or equal to the second threshold value, it is necessary to determine the control scheme of the compressor as the control scheme of the hot water supply apparatus. Specifically, the set temperature of the hot water supply device may be obtained, a temperature difference value between the saturated temperature corresponding to the pressure on the refrigerant side of the heat exchanger and the set temperature may be calculated, and the operation frequency of the compressor may be reduced and determined as the control scheme of the compressor when the temperature difference value is greater than the third threshold. Here the third threshold is smaller than the second threshold. In one example, the third threshold may be set to 0.5. Therefore, the temperature difference value between the saturated temperature corresponding to the pressure of the refrigerant side of the heat exchanger and the set temperature can be further reduced by reducing the operation frequency of the compressor under the condition that the temperature difference value is larger than the third threshold value and smaller than the second threshold value, and the energy efficiency of equipment operation is effectively improved.
Alternatively, as an optimization, reducing the compressor operating frequency may include: the compressor is controlled to reduce the operating frequency of the compressor at a rate of 1HZ every S2 seconds. Here, S2 may be set in advance. For example, S2 may be 10 seconds. In this way, the operating frequency of the compressor can be periodically reduced, and the occurrence of unstable system caused by too fast a reduction in the operating frequency of the compressor can be prevented.
FIG. 4 is a schematic diagram of another method for controlling a hot water supply apparatus provided by an embodiment of the present disclosure; as shown in connection with fig. 4, an embodiment of the present disclosure provides another method for controlling a hot water supply apparatus, including:
s41, the hot water supply device determines the exhaust superheat degree of the compressor.
S42, under the condition that the superheat degree of the exhaust gas is larger than a first threshold value, the control scheme of the hot water supply equipment is determined according to the outlet water temperature of the heat exchanger and the saturation temperature corresponding to the pressure of the refrigerant side of the heat exchanger.
S43, the hot water supply device controls the hot water supply device to execute the control scheme.
S44, controlling the hot water supply device to stop executing the control scheme under the condition that the temperature difference value between the saturated temperature corresponding to the pressure of the refrigerant side of the heat exchanger and the set temperature is smaller than a third threshold value.
In the scheme, after the hot water supply equipment controls the execution control scheme, the saturated temperature corresponding to the pressure of the refrigerant side of the heat exchanger gradually approaches the outlet water temperature of the heat exchanger. Therefore, when it is determined that the temperature difference value between the saturated temperature corresponding to the pressure of the refrigerant side of the heat exchanger and the set temperature is smaller than the third threshold value, it is determined that the current hot water supply apparatus does not need to perform adjustment of the saturated temperature, and it is controlled to stop executing the control scheme so as to end adjustment of the saturated temperature. In this way, the time for stopping the operation of the control scheme is more accurately determined, and the adjustment of the saturation temperature is stopped after the saturation temperature corresponding to the pressure of the refrigerant side of the heat exchanger is close to the outlet water temperature of the heat exchanger, so that the treatment resources of the hot water supply equipment are effectively saved.
Optionally, S12, the control scheme of the hot water supply device is determined by the hot water supply device according to the outlet water temperature of the heat exchanger and the saturation temperature corresponding to the pressure of the refrigerant side of the heat exchanger, including:
the hot water supply equipment determines a control scheme corresponding to the outlet water temperature and the saturation temperature of the heat exchanger as the control scheme of the hot water supply equipment according to a preset corresponding relation.
In the embodiment of the present disclosure, it may be understood that, according to test experience of a person skilled in the art, a corresponding relationship may be pre-stored in the hot water supply device in advance, where the corresponding relationship is a corresponding relationship between a water outlet temperature of the heat exchanger, a saturation temperature corresponding to a pressure on a refrigerant side of the heat exchanger, and a control scheme of the hot water supply device. Further, after the hot water supply device obtains the saturation temperature corresponding to the outlet water temperature of the heat exchanger and the pressure on the refrigerant side of the heat exchanger, a control scheme corresponding to the outlet water temperature of the heat exchanger and the saturation temperature corresponding to the pressure on the refrigerant side of the heat exchanger may be determined, and the control scheme may be determined as the control scheme of the hot water supply device. In this way, on the premise that the hot water supply equipment stably operates, a more reasonable control scheme of the hot water supply equipment can be determined, and energy consumption is effectively reduced.
FIG. 5 is a schematic diagram of a method for determining superheat of an exhaust gas provided by an embodiment of the present disclosure; as shown in fig. 5, optionally, S11, the hot water supply apparatus determines a discharge superheat degree of the compressor, including:
s51, the hot water supply device obtains the exhaust temperature of the compressor and the saturation temperature corresponding to the exhaust pressure of the compressor.
S52, the hot water supply apparatus determines a difference between the discharge temperature and the saturation temperature as a discharge superheat degree of the compressor.
In this aspect, the hot water supply apparatus may acquire the discharge pressure of the compressor. And determining the saturation temperature corresponding to the obtained exhaust pressure of the compressor according to the preset corresponding relation between the exhaust pressure of the compressor and the saturation temperature. And after the exhaust temperature of the compressor is obtained, determining the difference between the exhaust temperature and the saturation temperature as the exhaust superheat degree of the compressor. Thus, an accurate data basis can be provided for judging whether the equipment stably operates.
Alternatively, in the case where the degree of superheat of the exhaust gas is less than or equal to the first threshold value, the hot water supply apparatus decreases the opening degree of the expansion valve on the outlet side of the heat exchanger to increase the degree of superheat of the exhaust gas.
In this scheme, after the hot water supply apparatus determines the exhaust superheat degree of the compressor, if the exhaust superheat degree of the compressor is lower, even lower than the first threshold, it is determined that the current exhaust superheat degree of the compressor cannot maintain the stable operation of the hot water supply apparatus, so that the current exhaust superheat degree needs to be improved. In one example, the current superheat of the discharge gas of the compressor can be increased by decreasing the opening of the expansion valve at the outlet side of the heat exchanger to decrease the flow of the refrigerant at the outlet side of the heat exchanger. With this scheme, can be under the condition that the degree of superheat of compressor is less than first threshold value, through the aperture of control expansion valve, effectively improve the degree of superheat of compressor, further guarantee the steady operation of hot water supply equipment.
The embodiment of the disclosure provides an apparatus for controlling a hot water supply device, which comprises a first determining module, a second determining module and a control module. The first determination module is configured to determine a discharge superheat of the compressor; the second determining module is configured to determine a control scheme of the hot water supply device according to the outlet water temperature of the heat exchanger of the hot water supply device and the saturation temperature corresponding to the pressure of the refrigerant side of the heat exchanger under the condition that the exhaust superheat degree is larger than a first threshold value; the control module is configured to control the hot water supply apparatus to execute a control scheme.
By adopting the device for controlling the hot water supply equipment provided by the embodiment of the disclosure, the exhaust superheat degree of the compressor is determined, and under the condition that the exhaust superheat degree is larger than the first threshold value, the exhaust superheat degree of the compressor is determined to be enough to maintain the stable operation of the hot water supply equipment, and the control scheme for reducing the energy consumption of the equipment is determined by combining the acquired outlet water temperature of the heat exchanger and the saturation temperature corresponding to the pressure of the refrigerant side of the heat exchanger, and the hot water supply equipment is controlled to execute the scheme. In this way, after the hot water supply equipment is controlled to execute the scheme, the saturation temperature corresponding to the pressure of the refrigerant side of the heat exchanger can be as close as possible to the outlet water temperature of the heat exchanger, so that the energy efficiency and the stability of the equipment operation are effectively enhanced.
FIG. 6 is a schematic view of an apparatus for controlling a hot water supply device provided in an embodiment of the present disclosure; as shown in connection with fig. 6, an embodiment of the present disclosure provides an apparatus for controlling a hot water supply device, including a processor (processor) 100 and a memory (memory) 101. Optionally, the apparatus may further comprise a communication interface (Communication Interface) 102 and a bus 103. The processor 100, the communication interface 102, and the memory 101 may communicate with each other via the bus 103. The communication interface 102 may be used for information transfer. The processor 100 may call logic instructions in the memory 101 to perform the method for controlling the hot water supply apparatus of the above-described embodiment.
Further, the logic instructions in the memory 101 described above may be implemented in the form of software functional units and may be stored in a computer readable storage medium when sold or used as a stand alone product.
The memory 101 is a computer readable storage medium that can be used to store a software program, a computer executable program, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 100 executes functional applications and data processing by running program instructions/modules stored in the memory 101, i.e., implements the method for controlling the hot water supply apparatus in the above-described embodiments.
The memory 101 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for a function; the storage data area may store data created according to the use of the terminal device, etc. Further, the memory 101 may include a high-speed random access memory, and may also include a nonvolatile memory.
The embodiment of the disclosure provides hot water supply equipment, which comprises the device for controlling the hot water supply equipment.
The disclosed embodiments provide a computer-readable storage medium storing computer-executable instructions configured to perform the above-described method for controlling a hot water supply apparatus.
The disclosed embodiments provide a computer program product comprising a computer program stored on a computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, cause the computer to perform the above-described method for controlling a hot water supply device.
The computer readable storage medium may be a transitory computer readable storage medium or a non-transitory computer readable storage medium.
Embodiments of the present disclosure may be embodied in a software product stored on a storage medium, including one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of a method according to embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium including: a plurality of media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or a transitory storage medium.
The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may involve structural, logical, electrical, process, and other changes. The embodiments represent only 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. Moreover, the terminology used in the present application is for the purpose of describing embodiments only and is not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a," "an," and "the" (the) are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, when used in this application, the terms "comprises," "comprising," and/or "includes," and variations thereof, mean that the stated features, integers, steps, operations, elements, and/or components are present, but that the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof is not precluded. Without further limitation, an element defined by the phrase "comprising one …" does not exclude the presence of other like elements in a process, method or apparatus comprising such elements. In this context, each embodiment may be described with emphasis on the differences from the other embodiments, and the same similar parts between the various embodiments may be referred to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method sections disclosed in the embodiments, the description of the method sections may be referred to for relevance.
Those of skill in the art will 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 depends upon the particular application and design constraints imposed on the solution. The skilled artisan may use different methods for each particular application to achieve the described functionality, but such implementation should not be considered to be beyond the scope of the embodiments of the present disclosure. It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
In the embodiments disclosed herein, the disclosed methods, articles of manufacture (including but not limited to devices, apparatuses, etc.) may be practiced in other ways. For example, the apparatus embodiments described above are merely illustrative, and for example, the division of the units may be merely a logical function division, and there may be additional divisions when actually implemented, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. In addition, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form. The units described as separate units may or may not be physically separate, and units shown 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 may be selected according to actual needs to implement the present embodiment. In addition, each functional unit in the embodiments of the present disclosure may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
The flowcharts 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. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than that disclosed in the description, and sometimes no specific order exists between different operations or steps. For example, two consecutive operations or steps may actually be performed substantially in parallel, they may sometimes be performed in reverse order, which may be dependent on the functions involved. Each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Claims (9)
1. A method for controlling a hot water supply apparatus, the hot water supply apparatus comprising a compressor, the method comprising:
determining a discharge superheat of the compressor;
determining a control scheme of the hot water supply equipment for reducing equipment energy consumption according to the outlet water temperature of a heat exchanger of the hot water supply equipment and the saturation temperature corresponding to the pressure of the refrigerant side of the heat exchanger under the condition that the exhaust superheat degree is larger than a first threshold value;
controlling the hot water supply apparatus to execute the control scheme;
the determining a control scheme of the hot water supply device according to the outlet water temperature of the heat exchanger of the hot water supply device and the saturation temperature corresponding to the pressure of the refrigerant side of the heat exchanger comprises the following steps:
calculating a difference value between a saturation temperature corresponding to the pressure of the refrigerant side of the heat exchanger and the outlet water temperature of the heat exchanger of the hot water supply equipment;
determining a control scheme of the hot water supply apparatus according to the absolute value of the difference value;
the determining a control scheme of the hot water supply apparatus according to the absolute value of the difference value includes:
in the case where the absolute value of the difference is greater than a second threshold value, increasing the expansion valve opening degree of the heat exchanger outlet side as a control scheme of the hot water supply apparatus;
the increasing the opening degree of the expansion valve at the outlet side of the heat exchanger comprises the following steps:
controlling the expansion valve to increase the expansion valve opening of the outlet side of the heat exchanger at a speed of increasing Z step length every S1 seconds so as to prevent unstable system caused by excessively fast expansion valve opening;
wherein the first threshold is a discharge superheat of the compressor sufficient to maintain stable operation of the hot water supply apparatus, and the first threshold is determinable in combination with an operating frequency of the compressor and an ambient temperature condition.
2. The method according to claim 1, wherein said determining a control scheme of the hot water supply device based on the absolute value of the difference comprises:
in the case that the absolute value of the difference is less than or equal to the second threshold, taking the determined control scheme of the compressor as the control scheme of the hot water supply apparatus;
wherein the second threshold is lower than the first threshold.
3. The method of claim 2, wherein the control scheme of the compressor is determinable by:
acquiring a set temperature of the hot water supply device;
when the temperature difference value between the saturated temperature corresponding to the pressure of the refrigerant side of the heat exchanger and the set temperature is larger than a third threshold value, the operation frequency of the compressor is reduced, and the control scheme of the compressor is determined;
wherein the third threshold is lower than the second threshold.
4. A method according to claim 3, wherein after controlling the hot water supply device to execute the control scheme, the method further comprises:
and controlling the hot water supply equipment to stop executing the control scheme under the condition that the temperature difference value between the saturated temperature corresponding to the pressure of the refrigerant side of the heat exchanger and the set temperature is smaller than a third threshold value.
5. The method according to claim 1, wherein the determining the control scheme of the hot water supply apparatus according to the outlet water temperature of the heat exchanger of the hot water supply apparatus and the saturation temperature corresponding to the pressure of the refrigerant side of the heat exchanger includes:
and determining a control scheme corresponding to the outlet water temperature and the saturation temperature of the heat exchanger of the hot water supply equipment as the control scheme of the hot water supply equipment according to a preset corresponding relation.
6. The method of claim 1, wherein said determining a discharge superheat of said compressor comprises:
obtaining the exhaust temperature of the compressor and the saturation temperature corresponding to the exhaust pressure of the compressor;
and determining the difference between the exhaust temperature and the saturation temperature as the exhaust superheat degree of the compressor.
7. The method of claim 1, wherein after said determining the discharge superheat of the compressor, the method further comprises:
and when the exhaust superheat degree is smaller than or equal to the first threshold value, reducing the opening degree of the expansion valve at the outlet side of the heat exchanger so as to increase the exhaust superheat degree.
8. An apparatus for controlling a hot water supply device, comprising a processor and a memory storing program instructions, wherein the processor is configured to perform the method for controlling a hot water supply device according to any one of claims 1 to 7 when the program instructions are run.
9. A hot water supply apparatus comprising a compressor, further comprising the device for controlling the hot water supply apparatus as claimed in claim 8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111165911.6A CN113983692B (en) | 2021-09-30 | 2021-09-30 | Method and device for controlling hot water supply equipment and hot water supply equipment |
| PCT/CN2022/095460 WO2023050844A1 (en) | 2021-09-30 | 2022-05-27 | Method and apparatus for controlling hot water supply device, and hot water supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111165911.6A CN113983692B (en) | 2021-09-30 | 2021-09-30 | Method and device for controlling hot water supply equipment and hot water supply equipment |
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| Publication Number | Publication Date |
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| CN113983692A CN113983692A (en) | 2022-01-28 |
| CN113983692B true CN113983692B (en) | 2023-05-26 |
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| CN202111165911.6A Active CN113983692B (en) | 2021-09-30 | 2021-09-30 | Method and device for controlling hot water supply equipment and hot water supply equipment |
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| WO (1) | WO2023050844A1 (en) |
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| CN113983692B (en) * | 2021-09-30 | 2023-05-26 | 青岛海尔空调电子有限公司 | Method and device for controlling hot water supply equipment and hot water supply equipment |
| CN115493295B (en) * | 2022-09-26 | 2024-07-12 | 珠海格力电器股份有限公司 | Control method and system of hot water unit and computer readable storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005134070A (en) * | 2003-10-31 | 2005-05-26 | Matsushita Electric Ind Co Ltd | Heat pump water heater |
| CN108800562A (en) * | 2018-06-20 | 2018-11-13 | 青岛海信日立空调系统有限公司 | Heat-production control method, the apparatus and system of hot water heat pump system |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008164204A (en) * | 2006-12-27 | 2008-07-17 | Hitachi Ltd | Heat pump system |
| JP2008190737A (en) * | 2007-02-01 | 2008-08-21 | Denso Corp | Heat pump type hot water supply apparatus |
| CN201170657Y (en) * | 2008-01-16 | 2008-12-24 | 杭州锦江百浪新能源有限公司 | Capacity stepless regulation air source water heater |
| CN102022829A (en) * | 2009-09-09 | 2011-04-20 | 中国科学院工程热物理研究所 | Immersed condensation heat exchanger and application thereof |
| CN104197522B (en) * | 2014-07-07 | 2017-01-25 | 珠海格力电器股份有限公司 | Water heater control method and system |
| CN106091377B (en) * | 2016-06-17 | 2019-04-30 | 广东美的暖通设备有限公司 | Air conditioning hot unit |
| CN208871853U (en) * | 2018-06-25 | 2019-05-17 | 佛山光腾新能源股份有限公司 | A kind of Teat pump boiler based on the work of temperature sensor control system |
| CN110749049A (en) * | 2018-07-05 | 2020-02-04 | 青岛海尔空调电子有限公司 | Control method of water-cooled air conditioning unit |
| CN113983692B (en) * | 2021-09-30 | 2023-05-26 | 青岛海尔空调电子有限公司 | Method and device for controlling hot water supply equipment and hot water supply equipment |
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- 2021-09-30 CN CN202111165911.6A patent/CN113983692B/en active Active
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005134070A (en) * | 2003-10-31 | 2005-05-26 | Matsushita Electric Ind Co Ltd | Heat pump water heater |
| CN108800562A (en) * | 2018-06-20 | 2018-11-13 | 青岛海信日立空调系统有限公司 | Heat-production control method, the apparatus and system of hot water heat pump system |
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| CN113983692A (en) | 2022-01-28 |
| WO2023050844A1 (en) | 2023-04-06 |
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