CN117515978A - Control method and device of air-cooled heat pump system, electronic equipment and storage medium - Google Patents

Control method and device of air-cooled heat pump system, electronic equipment and storage medium Download PDF

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Publication number
CN117515978A
CN117515978A CN202210887875.2A CN202210887875A CN117515978A CN 117515978 A CN117515978 A CN 117515978A CN 202210887875 A CN202210887875 A CN 202210887875A CN 117515978 A CN117515978 A CN 117515978A
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CN
China
Prior art keywords
heat pump
cooled heat
air
pump unit
temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210887875.2A
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Chinese (zh)
Inventor
郑伟
张磊
孙辉
赵雷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
Original Assignee
Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
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Filing date
Publication date
Application filed by Qingdao Haier Air Conditioner Gen Corp Ltd, Qingdao Haier Air Conditioning Electric Co Ltd, Haier Smart Home Co Ltd filed Critical Qingdao Haier Air Conditioner Gen Corp Ltd
Priority to CN202210887875.2A priority Critical patent/CN117515978A/en
Publication of CN117515978A publication Critical patent/CN117515978A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • 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
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention provides a control method, a device, electronic equipment and a storage medium of an air-cooled heat pump system, wherein the control method of the air-cooled heat pump system is applied to the air-cooled heat pump system, the air-cooled heat pump system comprises at least one main air-cooled heat pump unit and at least one standby air-cooled heat pump unit, the main air-cooled heat pump unit and the standby air-cooled heat pump unit are connected in parallel, and the control method of the air-cooled heat pump system comprises the following steps: acquiring a temperature difference between a preset water inlet temperature and a total water inlet temperature of the air-cooled heat pump system under the condition that the environmental temperature is smaller than the preset environmental temperature, wherein the total water inlet temperature is determined according to the water inlet temperature of the main air-cooled heat pump unit and the water inlet temperature of the standby air-cooled heat pump unit; and respectively controlling the operation modes of the main air-cooled heat pump unit and the standby air-cooled heat pump unit based on the temperature difference. The invention can ensure that the air-cooled heat pump system can quickly adjust the water temperature so as to meet the requirements of users.

Description

Control method and device of air-cooled heat pump system, electronic equipment and storage medium
Technical Field
The present invention relates to the field of air-cooled heat pumps, and in particular, to a method and apparatus for controlling an air-cooled heat pump system, an electronic device, and a storage medium.
Background
The air-cooled heat pump unit is an air-conditioning unit different from an air-cooled water chilling unit in the air-conditioning industry. Besides the function of preparing cold water by the air-cooled chiller, the air-cooled heat pump unit can be switched to a heating working condition to prepare hot water. The basic principle of the air-cooled heat pump is based on compression refrigeration cycle, and the refrigerant is used as a carrier, and heat is extracted from the atmosphere or discharged through forced heat exchange of a fan so as to meet the requirements of refrigeration or heating.
The related art shows that the fin heat exchanger in the air-cooled heat pump unit can generate frosting under the condition of low-temperature heating. And as the frosting situation is aggravated, the energy efficiency of the air-cooled heat pump unit is continuously reduced, and the heating energy is also reduced. At this time, the air-cooled heat pump unit needs to enter a defrosting mode. Because the water temperature can drop sharply during defrosting, the air-cooled heat pump unit can adjust the water temperature for a long time, and the requirement of a user can not be met.
Disclosure of Invention
The invention provides a control method, a control device, electronic equipment and a storage medium of an air-cooled heat pump system, which are used for solving the defect that the water temperature regulated by an air-cooled heat pump unit cannot meet the requirement of a user for a long time due to the operation of a defrosting mode in the prior art, and realizing the purpose of quickly ensuring that the regulated water temperature meets the requirement of the user.
The invention provides a control method of an air-cooled heat pump system, which is applied to the air-cooled heat pump system, wherein the air-cooled heat pump system comprises at least one main air-cooled heat pump unit and at least one standby air-cooled heat pump unit, the main air-cooled heat pump unit and the standby air-cooled heat pump unit are connected in parallel, and the control method of the air-cooled heat pump system comprises the following steps:
acquiring a temperature difference between a preset water inlet temperature and a total water inlet temperature of the air-cooled heat pump system under the condition that the environmental temperature is smaller than the preset environmental temperature, wherein the total water inlet temperature is determined according to the water inlet temperature of the main air-cooled heat pump unit and the water inlet temperature of the standby air-cooled heat pump unit;
and respectively controlling the operation modes of the main air-cooled heat pump unit and the standby air-cooled heat pump unit based on the temperature difference.
According to the control method of the air-cooled heat pump system provided by the invention, the operation modes of the main air-cooled heat pump unit and the standby air-cooled heat pump unit are respectively controlled based on the temperature difference, and the control method specifically comprises the following steps:
controlling the standby air-cooled heat pump unit to operate in a defrosting mode and controlling the main air-cooled heat pump unit to operate in a heating mode under the condition that the temperature difference is smaller than or equal to a temperature difference threshold value;
and after the standby air-cooled heat pump unit executes the defrosting mode, controlling the standby air-cooled heat pump unit to execute a standby mode.
According to the control method of the air-cooled heat pump system provided by the invention, after the standby air-cooled heat pump unit is controlled to execute the standby mode, the method further comprises the following steps:
and under the condition that the main body air-cooled heat pump unit is adjusted to a defrosting mode by a heating mode, controlling the standby air-cooled heat pump unit to operate in the heating mode.
According to the control method of the air-cooled heat pump system provided by the invention, when the main body air-cooled heat pump unit is adjusted from a heating mode to a defrosting mode, the operation heating mode of the standby air-cooled heat pump unit is controlled, and the control method concretely comprises the following steps:
monitoring the temperature difference in real time;
and determining a first number of the standby air-cooled heat pump units for operating a heating mode based on the temperature difference threshold and the difference value of the temperature difference.
According to the control method of the air-cooled heat pump system provided by the invention, the first number of the standby air-cooled heat pump units for running a heating mode is determined based on the temperature difference threshold value and the difference value of the temperature difference, and the method specifically comprises the following steps:
and increasing the first number if the difference is greater than a difference threshold, such that the difference is less than or equal to the difference threshold if the first number is increased.
According to the control method of the air-cooled heat pump system provided by the invention, the first number of the standby air-cooled heat pump units for running a heating mode is determined based on the temperature difference threshold value and the difference value of the temperature difference, and the method specifically comprises the following steps:
in the event that the difference is less than or equal to a difference threshold, the first number is reduced and the difference is maintained less than or equal to the difference threshold.
According to the control method of the air-cooled heat pump system provided by the invention, the operation modes of the main air-cooled heat pump unit and the standby air-cooled heat pump unit are respectively controlled based on the temperature difference, and the control method specifically comprises the following steps:
and under the condition that the temperature difference is larger than a temperature difference threshold value, controlling the main air-cooled heat pump unit and the standby air-cooled heat pump unit to operate in a heating mode.
According to the control method of the air-cooled heat pump system provided by the invention, before the temperature difference between the preset water inlet temperature and the total water inlet temperature of the air-cooled heat pump system is obtained under the condition that the ambient temperature is smaller than the preset ambient temperature, the method further comprises:
judging the temperature relation between the ambient temperature and the preset ambient temperature;
and controlling the standby air-cooled heat pump unit to operate in a heating mode under the condition that the ambient temperature is greater than or equal to the preset ambient temperature.
The invention also provides a control device of the air-cooled heat pump system, the device is applied to the air-cooled heat pump system, the air-cooled heat pump system comprises at least one main air-cooled heat pump unit and at least one standby air-cooled heat pump unit, wherein the main air-cooled heat pump unit and the standby air-cooled heat pump unit are connected in parallel, and the control device of the air-cooled heat pump system comprises:
the acquisition module is used for acquiring the temperature difference between the preset water inlet temperature and the total water inlet temperature of the air-cooled heat pump system under the condition that the environmental temperature is smaller than the preset environmental temperature, wherein the total water inlet temperature is determined according to the water inlet temperature of the main air-cooled heat pump unit and the water inlet temperature of the standby air-cooled heat pump unit;
and the control module is used for respectively controlling the operation modes of the main body air-cooled heat pump unit and the standby air-cooled heat pump unit based on the temperature difference.
The invention also provides an electronic device, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the air-cooled heat pump system control method according to any one of the above is realized when the processor executes the program.
The invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method of controlling an air cooled heat pump system as described in any of the above.
The invention also provides a computer program product comprising a computer program which when executed by a processor implements a method of controlling an air cooled heat pump system as described in any of the above.
The invention provides a control method, a control device, electronic equipment and a storage medium of an air-cooled heat pump system, wherein the control method of the air-cooled heat pump system is applied to the air-cooled heat pump system, and the air-cooled heat pump system comprises at least one main air-cooled heat pump unit and at least one standby air-cooled heat pump unit. Under the condition that the ambient temperature is smaller than the preset ambient temperature, the operation modes of the main air-cooled heat pump unit and the standby air-cooled heat pump unit are respectively controlled based on the temperature difference between the preset water inlet temperature and the total water inlet temperature of the air-cooled heat pump system, so that the defect that the water temperature regulated by the air-cooled heat pump unit cannot reach the user requirement for a long time due to the operation of a defrosting mode can be overcome, and the air-cooled heat pump system can be ensured to quickly regulate the water temperature so as to reach the user requirement.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a control method of an air-cooled heat pump system provided by the invention;
FIG. 2 is a second flow chart of the control method of the air-cooled heat pump system according to the present invention;
FIG. 3 is a third schematic flow chart of the control method of the air-cooled heat pump system according to the present invention;
fig. 4 is a schematic flow chart of controlling the standby air-cooled heat pump unit to operate in a heating mode under the condition that the main body air-cooled heat pump unit is adjusted from the heating mode to a defrosting mode;
fig. 5 is a second schematic flow chart of controlling the standby air-cooled heat pump unit to operate in a defrosting mode when the main air-cooled heat pump unit is adjusted from the heating mode;
FIG. 6 is a schematic flow chart of a control method of an air-cooled heat pump system according to the present invention;
FIG. 7 is a fifth flow chart of the control method of the air-cooled heat pump system provided by the invention;
fig. 8 is a schematic structural diagram of a control device of an air-cooled heat pump system provided by the invention;
fig. 9 is a schematic structural diagram of an electronic device provided by the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The control method of the air-cooled heat pump system provided by the invention can enable the fluctuation of the water temperature to be smaller, can shorten the time from starting up of the air-cooled heat pump system to the water temperature reaching the set value, and improves the user experience.
The control method of the air-cooled heat pump system is applied to the air-cooled heat pump system. The air-cooled heat pump system can comprise at least one main air-cooled heat pump unit and at least one standby air-cooled heat pump unit. The main body air-cooled heat pump unit and the standby air-cooled heat pump unit can be connected in parallel.
In an example, if there are multiple main body air-cooled heat pump units, the main body air-cooled heat pump units may be connected in parallel. In still another example, if there are a plurality of backup air-cooled heat pump units, each backup air-cooled heat pump unit may be connected in parallel.
The main air-cooled heat pump unit or the standby air-cooled heat pump unit is a circulating system formed by a compressor, a heat exchanger, a throttle, a heat absorber, a compressor and other modules. The refrigerant circulates in the system under the action of the compressor. The refrigerant completes the gaseous boosting and heating process in the compressor, enters the heat exchanger, exchanges heat with water, is cooled and is converted into a flowing liquid state. When the refrigerant runs to the heat absorber, the liquid state rapidly absorbs heat and evaporates to be converted into a gas state again, and meanwhile, the temperature is reduced to be below zero, and then the air around the heat absorber continuously transfers low-temperature heat to the refrigerant. The refrigerant is continuously circulated, so that the process of converting low-temperature heat in the air into high-temperature heat and heating cold water is realized.
In one embodiment, the air-cooled heat pump system can jointly realize refrigeration or heating based on the main air-cooled heat pump unit and the standby air-cooled heat pump unit. In an example, in the refrigeration mode, the standby air-cooled heat pump unit also directly participates in refrigeration, so that the air-cooled heat pump system can be ensured to be capable of rapidly refrigerating in a shorter time.
In order to illustrate that the control method of the air-cooled heat pump system can effectively solve the defect that the water temperature regulated by the air-cooled heat pump unit cannot meet the requirement of a user for a long time due to the operation of a defrosting mode, thereby ensuring that the air-cooled heat pump system can quickly regulate the water temperature to meet the technical effect of the requirement of the user, the invention will illustrate the process of the air-cooled heat pump system in a heating mode. When the heating mode is executed, the standby air-cooled heat pump unit directly participates in heating, so that the air-cooled heat pump system can be ensured to be capable of heating quickly in a shorter time.
Fig. 1 is a schematic flow chart of a control method of an air-cooled heat pump system provided by the invention.
In an exemplary embodiment of the present invention, as can be seen in fig. 1, the air-cooled heat pump system control method may include a step 110 and a step 120, and each step will be described separately.
In step 110, under the condition that the ambient temperature is less than the preset ambient temperature, a temperature difference between the preset inlet water temperature and the total inlet water temperature of the air-cooled heat pump system is obtained. The total water inlet temperature is determined according to the water inlet temperature of the main air-cooled heat pump unit and the water inlet temperature of the standby air-cooled heat pump unit.
In step 120, the operation modes of the main air-cooled heat pump unit and the backup air-cooled heat pump unit are controlled based on the temperature difference, respectively.
In one embodiment, in a heating mode of the air-cooled heat pump system, when the monitored ambient temperature is less than the preset ambient temperature, it is indicated that an air-cooled heat pump unit (including a main air-cooled heat pump unit and a standby air-cooled heat pump unit) in the air-cooled heat pump system will have frosting. In order to avoid the influence of frosting on the heating capacity of the air-cooled heat pump system, the operation modes of the main air-cooled heat pump unit and the standby air-cooled heat pump unit need to be controlled respectively, so that the air-cooled heat pump system can meet the requirement of a user on a heating mode within a preset time, for example, the water temperature needs to reach a first temperature value in the heating mode. The first temperature value may be adjusted according to actual situations, and in this embodiment, the first temperature value is not specifically limited.
In one example, a temperature difference of a preset intake water temperature and a total intake water temperature of the air-cooled heat pump system may be obtained. Further, based on the temperature difference, the operation modes of the main air-cooled heat pump unit and the standby air-cooled heat pump unit can be controlled respectively.
It should be noted that, the preset environmental temperature may be adjusted according to actual situations, and in this embodiment, the preset environmental temperature is not specifically limited.
The control method of the air-cooled heat pump system is applied to the air-cooled heat pump system, wherein the air-cooled heat pump system comprises at least one main air-cooled heat pump unit and at least one standby air-cooled heat pump unit. Under the condition that the ambient temperature is smaller than the preset ambient temperature, the operation modes of the main air-cooled heat pump unit and the standby air-cooled heat pump unit are respectively controlled based on the temperature difference between the preset water inlet temperature and the total water inlet temperature of the air-cooled heat pump system, so that the defect that the water temperature regulated by the air-cooled heat pump unit cannot reach the user requirement for a long time due to the operation of a defrosting mode can be overcome, and the air-cooled heat pump system can be ensured to quickly regulate the water temperature so as to reach the user requirement.
To further describe the process of controlling the operation modes of the main air-cooled heat pump unit and the backup air-cooled heat pump unit, respectively, based on the temperature difference, a description will be given below with reference to fig. 2.
Fig. 2 is a second flow chart of the control method of the air-cooled heat pump system provided by the invention.
In an exemplary embodiment of the present invention, as can be seen in fig. 2, the control method of the air-cooled heat pump system may include steps 210 to 240, wherein step 210 is the same as or similar to step 110, and the detailed description and the beneficial effects thereof are shown in the foregoing description, and in this embodiment, the details are not repeated, and step 220 and step 240 will be described below respectively.
In step 220, in the case that the temperature difference is less than or equal to the temperature difference threshold, controlling the standby air-cooled heat pump unit to operate in a defrosting mode and controlling the main air-cooled heat pump unit to operate in a heating mode.
In one embodiment, when the temperature difference is monitored to be less than or equal to the temperature difference threshold, it is indicated that the air cooled heat pump system has adjusted the water temperature to be near the set point. In order to save energy consumption and heating efficiency of the whole air-cooled heat pump system, the standby air-cooled heat pump unit can be controlled to exit from a heating mode and run in a defrosting mode; and controlling the main body air-cooled heat pump unit to operate a heating mode for maintaining the water temperature.
In step 230, after the standby air-cooled heat pump unit performs the defrosting mode, the standby air-cooled heat pump unit is controlled to perform the standby mode.
In one embodiment, after the standby air-cooled heat pump unit is monitored to perform the defrosting mode, the standby air-cooled heat pump unit can be controlled to perform the standby mode to reduce energy consumption because the air-cooled heat pump system has adjusted the water temperature to be close to the set value.
In step 240, if the temperature difference is greater than the temperature difference threshold, the main air-cooled heat pump unit and the standby air-cooled heat pump unit are controlled to operate in a heating mode.
In one embodiment, when the temperature difference is detected to be greater than the temperature difference threshold, it is indicated that the air-cooled heat pump system has not adjusted the water temperature to about the set point. In order to quickly adjust the water temperature to be near the set value, the main air-cooled heat pump unit and the standby air-cooled heat pump unit can be controlled to operate in parallel to heat the mode.
Fig. 3 is a third flow chart of the control method of the air-cooled heat pump system provided by the invention.
The procedure of the air-cooled heat pump system control method will be described with reference to fig. 3.
In an exemplary embodiment of the present invention, as can be seen in fig. 3, the air-cooled heat pump system control method may include steps 310 to 340, wherein steps 310 to 330 are the same as or similar to steps 210 to 230, and the detailed description and the beneficial effects thereof are shown in the foregoing description, which is omitted herein for brevity, and step 340 will be described below.
In step 340, in the case that the main air-cooled heat pump unit is adjusted from the heating mode to the defrosting mode, the standby air-cooled heat pump unit is controlled to operate in the heating mode.
In one embodiment, when the main body air-cooled heat pump unit is monitored to be adjusted from the heating mode to the defrosting mode, in order to ensure that the air-cooled heat pump system can still maintain the water temperature to a preset temperature (also called a set value), the standby air-cooled heat pump unit can be controlled to operate in the heating mode so as to complement the heat reduced by the main body air-cooled heat pump unit when the main body air-cooled heat pump unit is adjusted from the heating mode to the defrosting mode, thereby effectively ensuring that the water temperature fluctuation maintained by the air-cooled heat pump system is smaller.
In order to further describe the control method of the air-cooled heat pump system provided by the invention, the following description will be made with reference to fig. 4.
Fig. 4 is a schematic flow chart of controlling the standby air-cooled heat pump unit to operate in a heating mode under the condition that the main body air-cooled heat pump unit is adjusted from the heating mode to the defrosting mode.
In an exemplary embodiment of the present invention, as can be seen in connection with fig. 4, in the case that the main air-cooled heat pump unit is adjusted from the heating mode to the defrosting mode, the process of controlling the standby air-cooled heat pump unit to operate in the heating mode may include a step 410 and a step 420, and each step will be described separately.
In step 410, the temperature difference is monitored in real time.
In step 420, a first number of backup air-cooled heat pump units to operate the heating mode is determined based on the temperature difference threshold and the difference in temperature difference.
In one embodiment, the deviation degree of the water temperature maintained by the air-cooled heat pump system from the set value can be determined according to the difference value of the temperature difference threshold value and the temperature difference. Further, a first number of backup air-cooled heat pump units to operate the heating mode may be determined based on the degree of deviation. According to the embodiment, on the premise of effectively maintaining the water temperature, the energy consumed by the standby air-cooled heat pump unit in a heating mode can be reduced as much as possible.
To further describe the process of determining the first number of backup air-cooled heat pump units operating the heating mode based on the temperature difference threshold and the temperature difference, a description will be provided below in connection with fig. 5.
Fig. 5 is a second schematic flow chart of controlling the standby air-cooled heat pump unit to operate in the heating mode under the condition that the main body air-cooled heat pump unit is adjusted from the heating mode to the defrosting mode.
In an exemplary embodiment of the present invention, as can be seen from fig. 5, in the case that the main air-cooled heat pump unit is adjusted from the heating mode to the defrosting mode, the controlling the operation of the standby air-cooled heat pump unit may include steps 510 to 530, wherein step 510 is the same as or similar to step 410, and the specific implementation and the beneficial effects thereof are described above, and in this embodiment, the description is omitted, and step 520 and step 530 will be described below.
In step 520, the first number is increased if the difference is greater than the difference threshold such that the difference is less than or equal to the difference threshold if the first number is increased.
In one embodiment, when the difference between the temperature difference threshold and the temperature difference is greater than the difference threshold, it may be determined that the water temperature maintained by the air-cooled heat pump system deviates from the set point to a greater degree. In order to enable the water temperature to reach the set value quickly, the first number of standby air-cooled heat pump units running the heating mode can be increased, so that the difference value is smaller than or equal to the difference value threshold value under the condition of increasing the first number.
In step 530, the first number is reduced and the difference is maintained less than or equal to the difference threshold if the difference is less than or equal to the difference threshold.
In one embodiment, when the difference between the temperature difference threshold and the temperature difference is less than or equal to the difference threshold, it may be determined that the water temperature maintained by the air-cooled heat pump system deviates less from the set point. In order to effectively reduce the energy consumed by the operation of the heating mode of the standby air-cooled heat pump unit on the premise of ensuring that the water temperature reaches the set value, the first number of the standby air-cooled heat pump units operating the heating mode can be reduced.
The difference threshold may be adjusted according to practical situations, which is not specifically limited in this embodiment.
Fig. 6 is a flow chart of a control method of an air-cooled heat pump system provided by the invention.
The procedure of the air-cooled heat pump system control method will be described with reference to fig. 6.
In an exemplary embodiment of the present invention, the air-cooled heat pump system control method may include steps 610 to 640, wherein steps 630 to 640 are the same as or similar to steps 110 to 120, and the detailed description and the beneficial effects thereof are as follows, and in this embodiment, the details are not repeated, and step 620 will be described below.
In step 610, a temperature relationship between the ambient temperature and a preset ambient temperature is determined.
In step 620, the standby air-cooled heat pump unit is controlled to operate in a heating mode when the ambient temperature is greater than or equal to the preset ambient temperature.
In one embodiment, when the ambient temperature is monitored to be greater than or equal to the preset ambient temperature, the air-cooled heat pump system does not frost. At the moment, the main body air-cooled heat pump unit and the standby air-cooled heat pump unit can be controlled to operate in a heating mode. By the mode, the standby air-cooled heat pump unit can directly participate in heating, so that heating can be realized rapidly, and the experience and satisfaction of a user are improved.
In order to further describe the control method of the air-cooled heat pump system provided by the invention, the following description will be made with reference to fig. 7.
Fig. 7 is a schematic flow chart of a control method of an air-cooled heat pump system provided by the invention.
In an exemplary embodiment of the present invention, as can be seen in fig. 7, the air-cooled heat pump system control method may include steps 701 to 710, and each step will be described below.
In step 701, a plurality of body air-cooled heat pump units operate in a heating mode.
In step 702, it is determined whether the ambient temperature is greater than a preset ambient temperature.
In step 703, if the ambient temperature is greater than the preset ambient temperature, the standby air-cooled heat pump unit is controlled to operate in the heating mode.
In step 704, if the ambient temperature is less than or equal to the preset ambient temperature, it is determined whether the temperature difference between the preset water inlet temperature and the total water inlet temperature is greater than a temperature difference threshold.
In one embodiment, in a heating mode of operation of a plurality of body air-cooled heat pump units in an air-cooled heat pump system, it may be determined whether the ambient temperature is greater than a preset ambient temperature.
In one example, when the ambient temperature is monitored to be greater than the preset ambient temperature, the air-cooled heat pump system does not frost. At the moment, the main body air-cooled heat pump unit and the standby air-cooled heat pump unit can be controlled to operate in a heating mode. By the mode, the standby air-cooled heat pump unit can directly participate in heating, so that heating can be realized rapidly, and the experience and satisfaction of a user are improved.
In yet another example, when the detected ambient temperature is less than or equal to the preset ambient temperature, a phenomenon that an air-cooled heat pump unit (including a main air-cooled heat pump unit and a standby air-cooled heat pump unit) in the air-cooled heat pump system is frosted is indicated. In order to avoid the influence of frosting on the heating capacity of the air-cooled heat pump system, the operation modes of the main air-cooled heat pump unit and the standby air-cooled heat pump unit need to be controlled respectively, so that the air-cooled heat pump system can meet the requirements of users on the heating mode within preset time. In one embodiment, in order to realize the control of the operation modes of the main air-cooled heat pump unit and the standby air-cooled heat pump unit, whether the temperature difference between the preset inlet water temperature and the total inlet water temperature is greater than a temperature difference threshold value may be determined, and the operation modes of the main air-cooled heat pump unit and the standby air-cooled heat pump unit may be controlled based on the determination result.
In step 705, if the temperature difference between the preset water inlet temperature and the total water inlet temperature is greater than the temperature difference threshold, the standby air-cooled heat pump unit and the main air-cooled heat pump unit are controlled to operate in a heating mode.
In step 706, if the temperature difference between the preset water inlet temperature and the total water inlet temperature is less than or equal to the temperature difference threshold, the heating mode of the standby air-cooled heat pump unit is turned off.
In step 707, the standby air-cooled heat pump unit is set to a standby mode after defrosting.
In one embodiment, when the temperature difference between the preset inlet water temperature and the total inlet water temperature is detected to be greater than the temperature difference threshold value, the air-cooled heat pump system is indicated that the water temperature is not regulated to be near the set value. In order to quickly adjust the water temperature to be near the set value, the main air-cooled heat pump unit and the standby air-cooled heat pump unit can be controlled to operate in parallel to heat the mode.
In yet another embodiment, the air cooled heat pump system is indicated to have adjusted the water temperature to about the set point when a temperature difference between the preset inlet water temperature and the total inlet water temperature is monitored to be less than or equal to a temperature difference threshold. In order to save energy consumption and heating efficiency of the whole air-cooled heat pump system, the standby air-cooled heat pump unit can be controlled to exit from a heating mode and run in a defrosting mode; and controlling the main body air-cooled heat pump unit to operate a heating mode for maintaining the water temperature. Further, after the standby air-cooled heat pump unit is monitored to execute the defrosting mode, the standby air-cooled heat pump unit can be controlled to execute the standby mode because the air-cooled heat pump system already adjusts the water temperature to be close to the set value, so that the consumption of energy sources is reduced.
In step 708, it is determined whether or not the main unit air-cooled heat pump unit enters a defrost mode.
In step 709, if the main air-cooled heat pump unit enters the defrosting mode, the standby air-cooled heat pump unit is controlled to start the heating mode.
In step 710, defrosting of the main body air-cooled heat pump unit is completed.
In one embodiment, when it is monitored that the main body air-cooled heat pump unit is adjusted from the heating mode to the defrosting mode, in order to ensure that the air-cooled heat pump system can still maintain the water temperature to a preset temperature (also called a preset value), the standby air-cooled heat pump unit can be controlled to operate in the heating mode so as to complement the heat reduced by the main body air-cooled heat pump unit when the main body air-cooled heat pump unit is adjusted from the heating mode to the defrosting mode, thereby effectively ensuring that the water temperature fluctuation maintained by the air-cooled heat pump system is smaller.
In yet another embodiment, when it is detected that there is no adjustment of the main body air-cooled heat pump unit from the heating mode to the defrosting mode, it is indicated that the defrosting process is not required at this time. In the application process, whether the main air-cooled heat pump unit enters a defrosting mode or not can be continuously monitored, and if the main air-cooled heat pump unit exists, the standby air-cooled heat pump unit is controlled to start a heating mode.
In yet another embodiment, when defrosting of the main air-cooled heat pump unit is finished, the heating mode of the standby air-cooled heat pump unit can be turned off to reduce energy consumption.
As can be seen from the above description, the control method of the air-cooled heat pump system provided by the present invention is applied to an air-cooled heat pump system, where the air-cooled heat pump system includes at least one main air-cooled heat pump unit and at least one standby air-cooled heat pump unit. Under the condition that the ambient temperature is smaller than the preset ambient temperature, the operation modes of the main air-cooled heat pump unit and the standby air-cooled heat pump unit are respectively controlled based on the temperature difference between the preset water inlet temperature and the total water inlet temperature of the air-cooled heat pump system, so that the defect that the water temperature regulated by the air-cooled heat pump unit cannot reach the user requirement for a long time due to the operation of a defrosting mode can be overcome, and the air-cooled heat pump system can be ensured to quickly regulate the water temperature so as to reach the user requirement.
Based on the same conception, the invention also provides a control device of the air-cooled heat pump system.
The air-cooled heat pump system control device provided by the invention is described below, and the air-cooled heat pump system control device described below and the air-cooled heat pump system control method described above can be referred to correspondingly.
Fig. 8 is a schematic structural diagram of a control device of an air-cooled heat pump system provided by the invention.
In an exemplary embodiment of the present invention, the air-cooled heat pump system control apparatus may be applied to an air-cooled heat pump system. The air-cooled heat pump system can comprise at least one main air-cooled heat pump unit and at least one standby air-cooled heat pump unit. The main body air-cooled heat pump unit and the standby air-cooled heat pump unit are connected in parallel. In yet another example, if there are a plurality of main air-cooled heat pump units, the main air-cooled heat pump units are also connected in parallel. In yet another example, if there are a plurality of backup air-cooled heat pump units, the backup air-cooled heat pump units are also connected in parallel.
In an exemplary embodiment of the present invention, as can be seen in fig. 8, the air-cooled heat pump system control device includes an acquisition module 810 and a control module 820, and each module will be described below.
The obtaining module 810 may be configured to obtain, when the ambient temperature is less than the preset ambient temperature, a temperature difference between the preset inlet water temperature and a total inlet water temperature of the air-cooled heat pump system, where the total inlet water temperature is determined according to the inlet water temperature of the main air-cooled heat pump unit and the inlet water temperature of the backup air-cooled heat pump unit.
The control module 820 may be configured to control the operating modes of the main and backup air-cooled heat pump units, respectively, based on the temperature difference.
In an exemplary embodiment of the present invention, the control module 820 may control the operation modes of the main air-cooled heat pump unit and the backup air-cooled heat pump unit, respectively, based on the temperature difference in the following manner:
controlling the operation defrosting mode of the standby air-cooled heat pump unit and the operation heating mode of the main air-cooled heat pump unit under the condition that the temperature difference is smaller than or equal to a temperature difference threshold value;
and after the standby air-cooled heat pump unit executes the defrosting mode, controlling the standby air-cooled heat pump unit to execute the standby mode.
In an exemplary embodiment of the invention, the control module 820 may be further configured to:
and under the condition that the main body air-cooled heat pump unit is adjusted to a defrosting mode from a heating mode, controlling the standby air-cooled heat pump unit to operate in the heating mode.
In an exemplary embodiment of the present invention, the control module 820 may control the standby air-cooled heat pump unit to operate in the heating mode in the case that the main air-cooled heat pump unit is adjusted from the heating mode to the defrosting mode in the following manner:
monitoring the temperature difference in real time;
a first number of backup air-cooled heat pump units to operate the heating mode is determined based on a difference between the temperature difference threshold and the temperature difference.
In an exemplary embodiment of the present invention, the control module 820 may determine the first number of backup air-cooled heat pump units operating the heating mode based on the temperature difference threshold and the difference in temperature difference by:
in the event that the difference is greater than the difference threshold, the first amount is increased such that the difference is less than or equal to the difference threshold in the event that the first amount is increased.
In an exemplary embodiment of the present invention, the control module 820 may determine the first number of backup air-cooled heat pump units operating the heating mode based on the temperature difference threshold and the difference in temperature difference by:
in the event that the difference is less than or equal to the difference threshold, the first amount is reduced and the difference is maintained less than or equal to the difference threshold.
In an exemplary embodiment of the present invention, the control module 820 may control the operation modes of the main air-cooled heat pump unit and the backup air-cooled heat pump unit, respectively, based on the temperature difference in the following manner:
and under the condition that the temperature difference is larger than the temperature difference threshold value, controlling the main air-cooled heat pump unit and the standby air-cooled heat pump unit to operate in a heating mode.
In an exemplary embodiment of the invention, the control module 820 may be further configured to:
judging the temperature relation between the ambient temperature and the preset ambient temperature;
and controlling the standby air-cooled heat pump unit to operate in a heating mode under the condition that the ambient temperature is greater than or equal to the preset ambient temperature.
Fig. 9 illustrates a physical schematic diagram of an electronic device, as shown in fig. 9, which may include: processor 910, communication interface (Communications Interface), memory 930, and communication bus 940, wherein processor 910, communication interface 920, and memory 930 communicate with each other via communication bus 940. Processor 910 may invoke logic instructions in memory 930 to perform a method of controlling an air-cooled heat pump system, the method being applied to an air-cooled heat pump system, the air-cooled heat pump system including at least one main air-cooled heat pump unit and at least one backup air-cooled heat pump unit, wherein the main air-cooled heat pump unit and the backup air-cooled heat pump unit are connected in parallel, the method comprising: acquiring a temperature difference between a preset water inlet temperature and a total water inlet temperature of the air-cooled heat pump system under the condition that the environmental temperature is smaller than the preset environmental temperature, wherein the total water inlet temperature is determined according to the water inlet temperature of the main air-cooled heat pump unit and the water inlet temperature of the standby air-cooled heat pump unit; and respectively controlling the operation modes of the main air-cooled heat pump unit and the standby air-cooled heat pump unit based on the temperature difference.
Further, the logic instructions in the memory 930 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. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-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 other various media capable of storing program codes.
In another aspect, the present invention further provides a computer program product, where the computer program product includes a computer program, where the computer program can be stored on a non-transitory computer readable storage medium, where the computer program, when executed by a processor, can perform the method for controlling an air-cooled heat pump system provided by the foregoing methods, where the method is applied to an air-cooled heat pump system, where the air-cooled heat pump system includes at least one main air-cooled heat pump unit and at least one backup air-cooled heat pump unit, and where the main air-cooled heat pump unit and the backup air-cooled heat pump unit are connected in parallel, the method includes: acquiring a temperature difference between a preset water inlet temperature and a total water inlet temperature of the air-cooled heat pump system under the condition that the environmental temperature is smaller than the preset environmental temperature, wherein the total water inlet temperature is determined according to the water inlet temperature of the main air-cooled heat pump unit and the water inlet temperature of the standby air-cooled heat pump unit; and respectively controlling the operation modes of the main air-cooled heat pump unit and the standby air-cooled heat pump unit based on the temperature difference.
In still another aspect, the present invention further provides a non-transitory computer readable storage medium having stored thereon a computer program, which when executed by a processor, is implemented to perform the method for controlling an air-cooled heat pump system provided by the above methods, where the method is applied to an air-cooled heat pump system, and the air-cooled heat pump system includes at least one main air-cooled heat pump unit and at least one backup air-cooled heat pump unit, where the main air-cooled heat pump unit and the backup air-cooled heat pump unit are connected in parallel, and the method includes: acquiring a temperature difference between a preset water inlet temperature and a total water inlet temperature of the air-cooled heat pump system under the condition that the environmental temperature is smaller than the preset environmental temperature, wherein the total water inlet temperature is determined according to the water inlet temperature of the main air-cooled heat pump unit and the water inlet temperature of the standby air-cooled heat pump unit; and respectively controlling the operation modes of the main air-cooled heat pump unit and the standby air-cooled heat pump unit based on the temperature difference.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
It will further be appreciated that although operations are depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In certain circumstances, multitasking and parallel processing may be advantageous.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (12)

1. The method is characterized by being applied to an air-cooled heat pump system, the air-cooled heat pump system comprises at least one main air-cooled heat pump unit and at least one standby air-cooled heat pump unit, wherein the main air-cooled heat pump unit and the standby air-cooled heat pump unit are connected in parallel, and the air-cooled heat pump system control method comprises the following steps:
acquiring a temperature difference between a preset water inlet temperature and a total water inlet temperature of the air-cooled heat pump system under the condition that the environmental temperature is smaller than the preset environmental temperature, wherein the total water inlet temperature is determined according to the water inlet temperature of the main air-cooled heat pump unit and the water inlet temperature of the standby air-cooled heat pump unit;
and respectively controlling the operation modes of the main air-cooled heat pump unit and the standby air-cooled heat pump unit based on the temperature difference.
2. The method according to claim 1, wherein the controlling the operation modes of the main air-cooled heat pump unit and the backup air-cooled heat pump unit based on the temperature difference, respectively, specifically comprises:
controlling the standby air-cooled heat pump unit to operate in a defrosting mode and controlling the main air-cooled heat pump unit to operate in a heating mode under the condition that the temperature difference is smaller than or equal to a temperature difference threshold value;
and after the standby air-cooled heat pump unit executes the defrosting mode, controlling the standby air-cooled heat pump unit to execute a standby mode.
3. The air-cooled heat pump system control method according to claim 2, wherein after the standby air-cooled heat pump assembly is controlled to perform a standby mode, the method further comprises:
and under the condition that the main body air-cooled heat pump unit is adjusted to a defrosting mode by a heating mode, controlling the standby air-cooled heat pump unit to operate in the heating mode.
4. A control method of an air-cooled heat pump system according to claim 3, wherein, in the case that the main air-cooled heat pump unit is adjusted from a heating mode to a defrosting mode, the control method of the standby air-cooled heat pump unit comprises:
monitoring the temperature difference in real time;
and determining a first number of the standby air-cooled heat pump units for operating a heating mode based on the temperature difference threshold and the difference value of the temperature difference.
5. The method according to claim 4, wherein determining the first number of the backup air-cooled heat pump units operating the heating mode based on the temperature difference threshold and the difference between the temperature differences, specifically comprises:
and increasing the first number if the difference is greater than a difference threshold, such that the difference is less than or equal to the difference threshold if the first number is increased.
6. The method according to claim 4, wherein determining the first number of the backup air-cooled heat pump units operating the heating mode based on the temperature difference threshold and the difference between the temperature differences, specifically comprises:
in the event that the difference is less than or equal to a difference threshold, the first number is reduced and the difference is maintained less than or equal to the difference threshold.
7. The method according to claim 1, wherein the controlling the operation modes of the main air-cooled heat pump unit and the backup air-cooled heat pump unit based on the temperature difference, respectively, specifically comprises:
and under the condition that the temperature difference is larger than a temperature difference threshold value, controlling the main air-cooled heat pump unit and the standby air-cooled heat pump unit to operate in a heating mode.
8. The air-cooled heat pump system control method according to claim 1, wherein before the temperature difference between the preset intake water temperature and the total intake water temperature of the air-cooled heat pump system is obtained in the case where the ambient temperature is less than the preset ambient temperature, the method further comprises:
judging the temperature relation between the ambient temperature and the preset ambient temperature;
and controlling the standby air-cooled heat pump unit to operate in a heating mode under the condition that the ambient temperature is greater than or equal to the preset ambient temperature.
9. The utility model provides an air-cooled heat pump system controlling means, its characterized in that, the device is applied to air-cooled heat pump system, air-cooled heat pump system includes at least one body air-cooled heat pump set and at least one reserve air-cooled heat pump set, wherein, body air-cooled heat pump set with reserve air-cooled heat pump set connects in parallel, air-cooled heat pump system controlling means includes:
the acquisition module is used for acquiring the temperature difference between the preset water inlet temperature and the total water inlet temperature of the air-cooled heat pump system under the condition that the environmental temperature is smaller than the preset environmental temperature, wherein the total water inlet temperature is determined according to the water inlet temperature of the main air-cooled heat pump unit and the water inlet temperature of the standby air-cooled heat pump unit;
and the control module is used for respectively controlling the operation modes of the main body air-cooled heat pump unit and the standby air-cooled heat pump unit based on the temperature difference.
10. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the air-cooled heat pump system control method according to any one of claims 1 to 8 when executing the program.
11. A non-transitory computer readable storage medium having stored thereon a computer program, wherein the computer program when executed by a processor implements the air-cooled heat pump system control method according to any one of claims 1 to 8.
12. A computer program product comprising a computer program, characterized in that the computer program, when executed by a processor, implements the air-cooled heat pump system control method according to any one of claims 1 to 8.
CN202210887875.2A 2022-07-26 2022-07-26 Control method and device of air-cooled heat pump system, electronic equipment and storage medium Pending CN117515978A (en)

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