CN114110935B - Control method and device of heat pump system, heat pump system and storage medium - Google Patents

Control method and device of heat pump system, heat pump system and storage medium Download PDF

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Publication number
CN114110935B
CN114110935B CN202111433249.8A CN202111433249A CN114110935B CN 114110935 B CN114110935 B CN 114110935B CN 202111433249 A CN202111433249 A CN 202111433249A CN 114110935 B CN114110935 B CN 114110935B
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room
temperature
tail end
heat pump
pump system
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CN114110935A (en
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尚瑞
黄太平
李天阳
陈志杰
赵振
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/46—Improving electric energy efficiency or saving
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature

Abstract

The invention discloses a control method and a control device of a heat pump system, the heat pump system and a storage medium, wherein the method comprises the following steps: under the condition that n tail end air discs need to be debugged, controlling the n tail end air discs to be in a full load capacity output state, and controlling the n tail end air discs to run according to a wind gear where the set maximum air output is located so as to start debugging the n tail end air discs; after the first set time, acquiring the room temperature change condition of each room; determining a capacity coefficient of an end wind disc arranged for each room according to the room temperature change condition of the room; and controlling the operation of the heat pump system according to the capacity coefficient of each tail end air disc and the indoor set temperature of the room where the tail end air disc is located. According to the scheme, the capacity of the wind disk in each room is corrected at least, the capacity of the wind disk can be identified and corrected according to the actual requirements of each room, the user experience is favorably improved, and the energy is favorably saved.

Description

Control method and device of heat pump system, heat pump system and storage medium
Technical Field
The invention belongs to the technical field of heat pump systems, and particularly relates to a control method and device of a heat pump system, the heat pump system and a storage medium.
Background
With the continuous promotion of the action plan for preventing and controlling the air pollution, the industrial chain of the heat pump develops rapidly, and compared with the common household air conditioner, the heat pump system (the heat pump water machine) has the characteristic of combining comfort and household heating, so that the heat pump system is favored by the majority of users.
In the related scheme, the heat pump unit and the tail end air disc are separately configured, and no communication or control function exists between the heat pump unit and the tail end air disc, so that the internal machine and the external machine cannot be controlled in a linkage mode in the operation process of the heat pump system, the heat pump system can only operate at the maximum load according to the temperature set by a user, the experience feeling of the user is reduced, and the energy consumption of the heat pump system is increased.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention aims to provide a control method and device of a heat pump system, the heat pump system and a storage medium, so as to solve the problems that the heat pump unit and a tail end air disc are separately configured, and an internal machine and an external machine cannot be controlled in a linkage manner, so that the heat pump system can only operate at the maximum load according to the temperature set by a user, the user experience is influenced, and the energy consumption of the heat pump system is increased, and the purposes that the capacity of the air disc in each room is at least corrected, the capacity of the air disc can be identified and corrected according to the actual requirement of each room, the user experience is favorably improved, and the energy-saving effect is favorably realized.
The present invention provides a method for controlling a heat pump system, the heat pump system including: a heat pump unit and a tail end air disc; the number of the tail end wind disks is n, and n is a positive integer; one said end wind disk is arranged for one said room in more than one room on the indoor side of said heat pump system; the control method of the heat pump system comprises the following steps: under the condition that n terminal air disks need to be debugged, controlling the n terminal air disks to be in a full-load capacity output state, and controlling the n terminal air disks to run according to a wind gear where a set maximum air output is located so as to start debugging the n terminal air disks; after the first set time, acquiring the room temperature change condition of each room; determining a capacity coefficient of the tail end wind disc arranged aiming at each room according to the room temperature change condition of the room; the capacity coefficient of the tail end wind disc can represent the proportion of the current output load of the tail end wind disc to the total output load of the tail end wind disc; and controlling the operation of the heat pump system according to the capacity coefficient of each tail end air disc and the indoor set temperature of the room where the tail end air disc is located.
In some embodiments, controlling n of the end wind disks to be all at a full load capacity output state comprises: for the n tail end wind disks, controlling each tail end wind disk to operate according to the limit temperature of the indoor set temperature; wherein the limit temperature is the lowest temperature in the cooling mode and the highest temperature in the heating mode.
In some embodiments, obtaining the room temperature change of each room comprises: acquiring a first room temperature of each room at the end of a first time period, and acquiring a second room temperature of the room at the end of a second time period; wherein, the first time period is the time period of the first set time; the second time period is a time period from the time when the terminal air plate of each room is debugged to the time when the second set time is over; and taking the difference value of the second room temperature and the first room temperature as the room temperature change condition of the room.
In some embodiments, determining the capacity coefficient of the end wind disk arranged for each room according to the room temperature change condition of the room comprises: determining the ratio of the room temperature change condition of each room to the time period of the room temperature change condition as the room temperature change rate of the room; and allocating the capacity percentage of all the end wind disks according to the room temperature change rate of the room, and determining the capacity percentage as the capacity coefficient of the end wind disks arranged for the room.
In some embodiments, controlling the operation of the heat pump system according to the capacity coefficient of each end wind disk and the indoor set temperature of the room where the end wind disk is located comprises: determining a room temperature correction coefficient of a room where the tail end wind disc is located according to the capacity coefficient of each tail end wind disc; based on the corresponding relation among the indoor set temperature, the room temperature correction coefficient and the air plate inlet water temperature, determining the air plate inlet water temperature of the tail end air plate according to the indoor set temperature and the room temperature correction coefficient of the room where each tail end air plate is located, and determining the air plate inlet water temperature as the air plate target water temperature of the tail end air plate; determining the mean value of the target water temperatures of the n wind disks of the tail end wind disk, and taking the mean value as the target outlet water temperature of the heat pump system; and controlling the heat pump system to operate according to the target outlet water temperature.
In some embodiments, determining a room temperature correction coefficient of a room in which each of the end wind disks is located according to the capacity coefficient of the end wind disk includes: determining the product of the capacity coefficient of each tail end wind disk, the wind shield correction coefficient of the tail end wind disk, the water flow correction coefficient of the tail end wind disk and the user correction coefficient aiming at the tail end wind disk as the correction coefficient of the tail end wind disk; determining the difference value between the outdoor temperature of the heat pump system and the indoor set temperature of the room where each tail end air disc is located as the actual temperature difference of the room where the tail end air disc is located; determining the difference value between the outdoor design temperature of the heat pump system and the indoor design temperature of the room where each tail end air disc is located as the design temperature difference value of the room where the tail end air disc is located; determining the product of the correction coefficient of each tail wind disc and the design temperature difference of the room where the tail wind disc is located; and determining the ratio of the actual temperature difference of the room where each tail end wind disk is positioned to the product as the room temperature correction coefficient of the room where the tail end wind disk is positioned.
In accordance with the above method, another aspect of the present invention provides a control device for a heat pump system, the heat pump system including: a heat pump unit and a tail end air disc; the number of the tail end wind disks is n, and n is a positive integer; one said end wind disk is arranged for one said room in more than one room on the indoor side of said heat pump system; the control device of the heat pump system includes: the control unit is configured to control the n tail end wind disks to be in a full-load capacity output state under the condition that the n tail end wind disks need to be debugged, and control the n tail end wind disks to operate according to a wind gear where a set maximum air output is located so as to start debugging the n tail end wind disks; the acquisition unit is configured to acquire the room temperature change condition of each room after a first set time; the control unit is further configured to determine a capacity coefficient of the tail end wind disc arranged for each room according to the room temperature change condition of the room; the capacity coefficient of the tail end wind disc can represent the proportion of the current output load of the tail end wind disc to the total output load of the tail end wind disc; the control unit is further configured to control the operation of the heat pump system according to the capacity coefficient of each end wind disk and the indoor set temperature of the room where the end wind disk is located.
In some embodiments, the controlling unit, controlling the n number of the end wind disks to be in a full load capacity output state, includes: for the n tail end wind disks, controlling each tail end wind disk to operate according to the limit temperature of the indoor set temperature; wherein the limit temperature is the lowest temperature in the cooling mode and the highest temperature in the heating mode.
In some embodiments, the obtaining unit obtains the room temperature change condition of each room, and includes: acquiring a first room temperature of each room at the end of a first time period, and acquiring a second room temperature of the room at the end of a second time period; wherein, the first time period is the time period of the first set time; the second time period is a time period from the time when the terminal air plate of each room is debugged to the time when the second set time is over; and taking the difference value of the second room temperature and the first room temperature as the room temperature change condition of the room.
In some embodiments, the control unit, determining the capacity coefficient of the end wind disk arranged for each room according to the room temperature change condition of the room, includes: determining the ratio of the room temperature change condition of each room to the time period of the room temperature change condition as the room temperature change rate of the room; and allocating the capacity percentage of all the end wind disks according to the room temperature change rate of the room, and determining the capacity percentage as the capacity coefficient of the end wind disks arranged for the room.
In some embodiments, the controlling unit controls the operation of the heat pump system according to the capacity coefficient of each end wind disk and the indoor set temperature of the room where the end wind disk is located, and includes: determining a room temperature correction coefficient of a room where the tail end wind disc is located according to the capacity coefficient of each tail end wind disc; determining the air plate inlet water temperature of the tail end air plate according to the indoor set temperature and the room temperature correction coefficient of the room where each tail end air plate is located based on the corresponding relation among the indoor set temperature, the room temperature correction coefficient and the air plate inlet water temperature, and determining the air plate inlet water temperature as the air plate target water temperature of the tail end air plate; determining the average value of the target water temperatures of the n wind disks of the tail end wind disk, and taking the average value as the target outlet water temperature of the heat pump system; and controlling the heat pump system to operate according to the target outlet water temperature.
In some embodiments, the determining, by the control unit, a room temperature correction coefficient of a room in which each of the end wind disks is located according to a capacity coefficient of the end wind disk includes: determining the product of the capacity coefficient of each tail end wind disk, the wind shield correction coefficient of the tail end wind disk, the water flow correction coefficient of the tail end wind disk and the user correction coefficient aiming at the tail end wind disk as the correction coefficient of the tail end wind disk; determining the difference value between the outdoor temperature of the heat pump system and the indoor set temperature of the room where each tail end air disc is located as the actual temperature difference of the room where the tail end air disc is located; determining the difference value between the outdoor design temperature of the heat pump system and the indoor design temperature of the room where each tail end air disc is located as the design temperature difference value of the room where the tail end air disc is located; determining the product of the correction coefficient of each tail wind disc and the design temperature difference of the room where the tail wind disc is located; and determining the ratio of the actual temperature difference of the room where each tail end air disk is located to the product as the room temperature correction coefficient of the room where the tail end air disk is located.
In accordance with another aspect of the present invention, there is provided a heat pump system, including: the control device for a heat pump system described above.
In line with the above method, a further aspect of the present invention provides a storage medium including a stored program, wherein when the program is run, an apparatus in which the storage medium is located is controlled to execute the above control method of a heat pump system.
Therefore, according to the scheme of the invention, the room temperature change rate of each room in a period of time is determined by enabling all the air disks to be in a full-load capacity output state and enabling the indoor set temperature to be the lowest (high) temperature set by the factory-delivered air disks, the size of the room temperature change rate of each room is used as the basis for determining the air disk capacity correction coefficient of the corresponding room, the default capacity of the air disks of each room is corrected by the air disk capacity correction coefficient of each room in the control process of the heat pump system, the actual capacity of the air disks of each room is obtained, and the air disks are controlled to operate at the actual capacity; therefore, the capacity of the wind plate in each room is at least corrected, the capacity of the wind plate can be identified and corrected according to the actual requirements of each room, the user experience is favorably improved, and the energy is favorably saved.
Furthermore, on the basis of correcting the capacity of each fan air disc, the outlet water temperature of the heat pump system is controlled based on the actual load of each room, so that the user experience can be further improved, and the energy-saving control of the heat pump system is further realized.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
Fig. 1 is a schematic flow chart illustrating a control method of a heat pump system according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating an embodiment of obtaining the room temperature change of each room in the method of the present invention;
FIG. 3 is a schematic flow chart of one embodiment of determining the capacity factor of the end wind disk for each room arrangement in the method of the present invention;
FIG. 4 is a schematic flow chart illustrating an embodiment of controlling the operation of the heat pump units according to the capacity factor of each end wind disk and the indoor set temperature in the method of the present invention;
FIG. 5 is a schematic flow chart illustrating an embodiment of determining room temperature correction factors for a room in which each end wind disk is located in the method of the present invention;
fig. 6 is a schematic structural diagram of an embodiment of a control device of the heat pump system of the present invention;
FIG. 7 is a schematic diagram of an embodiment of a heat pump system;
FIG. 8 is a schematic flow chart diagram illustrating an embodiment of a method of controlling a heat pump system according to the present invention;
fig. 9 is a look-up table of target water temperature of the wind pan of an embodiment of the heat pump system of the present invention.
The reference numbers in the embodiments of the present invention are as follows, in combination with the accompanying drawings:
1-an outdoor unit; 2-wind plate; 3-ambient temperature sensor; 4-outdoor unit main board; 5-a control center; 6-a storage module; 7-a data processing module; 8-a control module; 102-an obtaining unit; 104-control unit.
Detailed Description
In order to make 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 specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In consideration, because the heat pump unit and the tail end air disc are separately configured, the internal machine and the external machine cannot be controlled in a linkage manner, so that the heat pump system can only operate at the maximum load according to the temperature set by a user, the user experience is influenced, and the energy consumption of the heat pump system is increased. Therefore, a need exists for a more intelligent, energy efficient heat pump system.
In some schemes, the heat pump system can adjust the operation frequency of the compressor according to the obtained operation parameters of the indoor unit, so that the problem that the indoor unit and the outdoor unit cannot be controlled in a linkage mode is solved, the linkage control of the indoor unit and the outdoor unit is realized, and the output capacity of the heat pump system is improved. Although the scheme can realize linkage control of the internal machine and the external machine, the wind disks cannot be adapted to various wind disks, the water outlet temperature of the heat pump system cannot be automatically matched based on indoor load change, the user experience is influenced, and the energy is saved.
According to an embodiment of the present invention, a method for controlling a heat pump system is provided, as shown in fig. 1, which is a schematic flow chart of an embodiment of the method of the present invention. The heat pump system includes: heat pump set and terminal wind dish. The number of the tail end wind disks is n, and n is a positive integer. In more than one room on the indoor side of the heat pump system, one end wind disk is arranged for one room, but in practice, at least one end wind disk can be arranged for each room according to actual requirements. The number of the tail end wind disks is larger than or equal to the number of more than one room. The control method of the heat pump system comprises the following steps: step S110 to step S140.
In step S110, under the condition that n terminal wind disks need to be debugged, controlling n terminal wind disks to be in a full load capacity output state, and controlling n terminal wind disks to operate according to a wind gear where a set maximum air output is located, so as to start debugging the n terminal wind disks.
In some embodiments, the controlling n number of the end wind disks to be in the full load capacity output state in step S110 includes: and aiming at the n tail end wind disks, controlling each tail end wind disk to operate according to the limit temperature of the indoor set temperature. Wherein the limit temperature is the lowest temperature in the cooling mode and the highest temperature in the heating mode.
Fig. 8 is a flowchart illustrating a control method of a heat pump system according to an embodiment of the present invention. As shown in fig. 8, a control method of a heat pump system includes:
step 1, performing one-key debugging on a unit, testing the capacity of the air disk according to a set working condition, and further determining the capacity coefficient of the air disk according to the temperature change rate of each room, wherein the specific correction method comprises the following steps:
the host computer debugs the wind dish through a key debugging function, guarantees among the debugging process that all wind dishes are at full load capacity output state, and indoor temperature of setting for the wind dish minimum (high) temperature that leaves factory set: the indoor set temperature under the refrigeration working condition is the lowest refrigeration temperature (such as 16-20 ℃ and the like) which can be arranged on the temperature controller, and the indoor set temperature under the heating working condition is the highest temperature (such as 25-30 ℃ and the like). At this point, the heat pump system operates at the lowest (or high) leaving water temperature that can be achieved: under the refrigeration working condition, the outlet water temperature of the heat pump system is the lowest outlet water temperature (for example, 5-10 ℃) which can be reached, and the heating outlet water temperature of the heat pump system is the highest outlet water temperature (for example, 55-75 ℃). All the wind disks operate according to the wind gear of the maximum air output.
At step S120, after the first set time, the room temperature change condition of each room is obtained.
In some embodiments, a specific process of acquiring the room temperature variation of each room in step S120 is described in the following exemplary description.
The following further describes a specific process of acquiring the room temperature variation of each room in step S120 with reference to a schematic flow chart of an embodiment of acquiring the room temperature variation of each room in the method of the present invention shown in fig. 2, including: step S210 to step S220.
Step S210, obtaining a first room temperature of each room at the end of the first time period, and obtaining a second room temperature of the room at the end of the second time period. The first time period is a time period of the first set time, namely a time period from the time when the tail end air plate of the room is debugged and started to the time when the tail end air plate of the room is debugged and ended in each room. The second time period is a time period from the time when the terminal wind plate of each room is debugged to the time when the second set time is over, namely the time period of the second set time.
And step S220, taking the difference value between the second room temperature and the first room temperature as the room temperature change condition of the room.
As shown in fig. 8, a control method of a heat pump system further includes: in step 1, after all the wind disks operate according to the wind gear of the maximum air output and continuously operate for a period of time (for example, 15-25 min), the storage module 6 records the room temperature change condition of each room, and the data processing module 7 starts the self-debugging of each room to the first room temperature T of the first set time T1 n1 And from the end of the commissioning toSecond room temperature T at second set time T2 n2 And (6) carrying out comparison.
At step S130, determining a capacity coefficient of the end wind disk arranged for each room according to the room temperature variation of the room; and the capacity coefficient of the tail end wind disc can represent the proportion of the current output load of the tail end wind disc to the total output load of the tail end wind disc.
In some embodiments, the specific process of determining the capacity coefficient of the end wind disk arranged for each room according to the room temperature variation condition of the room in step S130 is as follows.
The specific process of determining the capacity coefficient of the end wind disk for each room arrangement in step S130 is further described below with reference to a flowchart of an embodiment of determining the capacity coefficient of the end wind disk for each room arrangement in the method of the present invention shown in fig. 3, and includes: step S310 to step S320.
Step S310, determining a ratio of the room temperature change condition of each room to a time period during which the room temperature change condition occurs as the room temperature change rate of the room.
And step S320, distributing the capacity percentage of all the tail end wind disks according to the room temperature change rate of the room, and determining the capacity percentage as the capacity coefficient of the tail end wind disks arranged for the room.
In step 1, after all the wind disks operate according to the wind gear of the maximum air output and continuously operate for a period of time (for example, 15-25 min), the storage module 6 records the room temperature change condition of each room, and the data processing module 7 starts the self-debugging of each room to the first room temperature T of the first set time T1 n1 And a second room temperature T from the end of the test to a second set time T2 n2 And comparing, and finally redistributing the capacity percentage of the wind disk capacity in the order of the magnitude of the room temperature difference change rate so as to obtain the capacity coefficient (namely the wind disk capacity coefficient). n represents the number of the wind disks, and n is a positive integer. According to the size of the room temperature change rate, the volume percentage can be distributed to all the wind disks, and the sum of the volume percentageThe magnitude of the room temperature change rate is consistent in sequence, but the numerical value is irrelevant, and the capacity percentage is a capacity coefficient.
Wherein, the rate of change of the room temperature difference is recorded as a rate of change of temperature ζ:
Figure GDA0003893594260000081
where ζ represents how fast the temperature changes over time. The faster the room temperature changes, the smaller the room load or the larger the capacity of the wind disk, the smaller the water temperature demand of the wind disk, and the smaller the proportion of the temperature difference in actual operation.
Certainly, in the subsequent operation, when the product of the water temperature correction coefficient and the room temperature setting correction coefficient of the corresponding room needs to be calculated, corresponding calculation is carried out according to the capacity coefficient set after debugging of each room.
The invention provides a control method of a heat pump system, which comprises a method for identifying and correcting the capacity of a wind disk, and the method comprises the following steps: setting a room target temperature, starting all the wind disks to operate at a high wind level, recording the change condition of the room temperature within a period of time, dividing the capacity of the wind disks according to the temperature change rate, determining the capacity correction coefficient of the wind disks, and calculating by using the capacity correction coefficient in the actual operation process. In the scheme of the invention, the capacity of the wind disk is identified and corrected through the one-key debugging function, so that the identification and correction of the capacity of the wind disk can be realized, the problem that the selection of the capacity of the wind disk is not matched with the actual demand of a room in the room temperature adjusting process is solved, and the intelligent level of a heat pump system is improved.
At step S140, the operation of the heat pump system is controlled according to the capacity coefficient of each end wind disk and the indoor set temperature of the room where the end wind disk is located.
Fig. 7 is a schematic diagram of an embodiment of a heat pump system. As shown in fig. 7, a heat pump system includes: the outdoor unit comprises an outdoor unit 1, a wind disc 2, an ambient temperature sensor 3, an outdoor unit mainboard 4, a control center 5, a storage module 6, a data processing module 7 and a control module 8. The ambient temperature sensor 3 and the outdoor unit main board 4 are respectively provided in the outdoor unit 1. The number of the wind disks 2 is multiple, and the wind disks 2 are arranged at the indoor side in parallel. The plurality of air disks 2 can be communicated with the outdoor unit main board 4. The control center 5 is provided on the indoor side. A plurality of winddisks 2 are each capable of communicating with a control center 5. The storage module 6, the data processing module 7 and the control module 8 are arranged in the control center 5.
In the related scheme, the air disks used by the users are divided equally according to 100% capacity proportion by default, and the requirements of each room on the capacity of the air disks are different in the actual use process. The capacity of the air coil refers to the corresponding heating (cooling) capacity under the nominal heating (cooling) working condition of the fan coil.
The scheme of the invention provides a method for identifying and correcting the capacity of a wind disk, which can solve the problem that the capacity selection of the wind disk is not matched with the actual capacity requirement of a room in the room temperature adjusting process by adding a one-key debugging and verifying function to correct the capacity of the wind disk, and also solve the problems that a heat pump system cannot be adapted to various wind disks, cannot automatically match the outlet water temperature of the heat pump system based on the indoor load change, influences the user experience and is not energy-saving enough.
In some embodiments, in step S140, a specific process of operating the heat pump system is controlled according to the capacity coefficient of each end wind disk and the indoor set temperature of the room in which the end wind disk is located, as shown in the following exemplary description.
With reference to the schematic flow chart of an embodiment of controlling the operation of the heat pump unit according to the capacity coefficient of each end wind disk and the indoor set temperature in the method of the present invention shown in fig. 4, the specific process of controlling the operation of the heat pump unit according to the capacity coefficient of each end wind disk and the indoor set temperature in step S140 is further described, which includes: step S410 to step S440.
And step S410, determining a room temperature correction coefficient of a room where the tail end wind disc is located according to the capacity coefficient of each tail end wind disc.
In some embodiments, in step S410, a specific process of determining a room temperature correction coefficient of a room where each of the end wind disks is located according to the capacity coefficient of the end wind disk is described in the following exemplary description.
The following further describes a specific process of determining the room temperature correction coefficient of the room in which each end wind disk is located in step S410, with reference to a schematic flow chart of an embodiment of determining the room temperature correction coefficient of the room in which each end wind disk is located in the method of the present invention shown in fig. 5, including: step S510 to step S540.
Step S510, determining a product of a capacity coefficient of each of the end wind disks, a wind screen correction coefficient of the end wind disk, a water flow correction coefficient of the end wind disk, and a user correction coefficient for the end wind disk as a correction coefficient of the end wind disk. User correction factor, e.g. beta, of the end flap Automatic correction 。
Step S520, determining the difference value between the outdoor temperature of the heat pump system and the indoor set temperature of the room where each tail end air disc is located as the actual temperature difference of the room where the tail end air disc is located, such as delta T Actual temperature difference 。
Step S530, determining a difference between the outdoor design temperature of the heat pump system and the indoor design temperature of the room where each of the end wind disks is located as a design temperature difference, such as Δ T, of the room where the end wind disk is located Design temperature 。
And step S540, determining the product of the correction coefficient of each tail end wind disk and the design temperature difference of the room where the tail end wind disk is located. And determining the ratio of the actual temperature difference of the room where each tail end wind disk is positioned to the product as the room temperature correction coefficient of the room where the tail end wind disk is positioned.
As shown in fig. 8, a control method of a heat pump system further includes:
and 2, determining each correction coefficient, and simultaneously calculating the product lambda of the water temperature correction coefficient of the corresponding room and the room temperature setting correction coefficient. The product lambda of the water temperature correction coefficient and the room temperature setting correction coefficient is calculated because each correction coefficient influences the outlet water temperature and simultaneously adjusts the room temperature setting temperature, so that the product lambda is uniformly processed and calculated. The product lambda is used to find the corresponding coil outlet water temperature in the table, so as to further obtain the outlet water temperature of the heat pump system.
The product lambda calculation formula of the water temperature correction coefficient and the room temperature setting correction coefficient of the room is as follows:
Figure GDA0003893594260000111
ΔT actual temperature difference ＝T Outdoor temperature -T Indoor set temperature 。
ΔT Design temperature ＝T Outdoor design temperature -T Indoor design temperature 。
β＝β Capacity correction *β Windshield correction *β Flow correction *β Automatic correction 。
Wherein, T Outdoor temperature : outdoor ambient temperature sensed by the ambient bulb during operation. T is Indoor set temperature : the temperature controller opened indoors sets the air outlet temperature. T is Outdoor design temperature : during engineering design, the outdoor environment temperature value used for reference can be adjusted through the background of the manual operator. T is a unit of Indoor design temperature : during engineering design, the indoor temperature for reference can be adjusted through the background of the manual operator. Beta is a Capacity correction : the fan coil (namely the tail end air disc) capacity coefficient (default is 1) is obtained according to the air disc capacity identification and correction method, so that the influence of unmatched air disc capacity type selection and the actual capacity requirement of a room in the room temperature adjusting process is eliminated. Beta is a Windshield correction : the fan coil corresponds to the coefficient of the wind gear under different air output quantities, and different air output quantities can directly influence the adjusting process of the heat pump system due to different requirements of actual air output quantities of users, so that the wind gear needs to be corrected, the coefficient of the wind gear with the largest air output quantity defaults to 1, and the same principle is carried out under other air output quantities (for example, under the refrigerating working condition, the wind gear of the heat pump system can be divided into three gears of high gear, medium gear and low gear, the corresponding coefficients are respectively 1, 0.8 and 0.7, and different gear levels correspond to different coefficients under the heating working condition). Beta is a Flow correction : the correction coefficient corresponding to the actual water flow of the fan coil is that the temperature difference between the supply water and the return water can be continuously increased along with the reduction of the water flow in the actual engineering application, and the water flow and the supply water and the return waterThe temperature difference has a certain functional relationship g = f (x). For example:
Figure GDA0003893594260000112
wherein the alpha is a constant, and the alpha is a linear alpha,
Figure GDA0003893594260000113
affected by the flow rate. In the scheme of the invention, the measurement of the real-time flow is not set, namely the influence of the flow is not considered, so that the default correction coefficient is 1. Beta is a Automatic correction : in the actual operation process of the heat pump system, the heat pump system is adjusted according to the requirements of a user, but the user feels that the comfort level is not good in the adjustment process, and then program adjustment can be carried out by contacting engineering personnel, wherein beta is beta Automatic correction (default of factory is 1.0), and the program correction range is 0.8-1.2.
The capacity correction coefficient of the tail end wind disc is the distributed capacity percentage and is not the temperature change rate, and the temperature change rate is used for sequencing.
According to the scheme, the control method of the heat pump system is provided, the capacity of the air disc is identified and corrected, the influence factors of the outlet water temperature of the heat pump system are comprehensively analyzed, the inlet water temperature of the air disc corresponding to the outlet air temperature of each room is obtained, and the outlet water temperature of the heat pump system is obtained through calculation, so that the intelligent control of the outlet water temperature of the heat pump system is accurately realized based on the actual load of each room, the user experience is improved, and the energy saving is facilitated.
Step 3 and fig. 9 are wind plate target water temperature lookup tables according to an embodiment of the heat pump system of the present invention, in the wind plate target water temperature (i.e., wind plate water inlet temperature) lookup table, a first row is an indoor set temperature, a first column is a wind plate water inlet temperature, and a middle part is a room temperature correction coefficient λ. And inquiring a target water temperature inquiry table (shown in figure 9) of the air disc of each room according to the product of the water temperature correction coefficient and the room temperature setting correction coefficient, calculating the average value of the target water temperature inquiry tables, and adjusting the outlet water temperature of the heat pump system according to the average value.
In the process of cooling (heating), the target water temperature of each room is based on the default by taking the target water temperature of the air plate of each room as a referenceThe method comprises the steps of designing indoor and outdoor temperature and real-time outdoor temperature, setting room temperature by an indoor temperature controller, setting wind gear of a wind disk, water flow of the wind disk, capacity of the wind disk and an automatic correction coefficient of a heat pump system, calculating a product lambda of a water temperature correction coefficient of a corresponding room and the room temperature setting correction coefficient, recording the product lambda as a room temperature correction coefficient lambda, and obtaining the water inlet temperature of the wind disk by searching a wind disk target water temperature query table (indoor setting temperature/wind disk water inlet temperature table) input into a storage module 6 according to the room temperature correction coefficient lambda so as to obtain the corresponding target water temperature of the wind disk (namely the water inlet temperature of the wind disk is used as the target water temperature of the wind disk). Then the target water temperature average value of the opening air discs of each room is calculated to obtain the target outlet water temperature T of the heat pump system Target outlet water temperature of heat pump system And finally the heat pump system is according to T Target outlet water temperature of heat pump system Operation:
Figure GDA0003893594260000121
the wind plate target water temperature query table is obtained according to actual tests, the overall trend of the wind plate target water temperature query table conforms to a certain function model, for example, a linear function model λ = ax + b is taken as an example, wherein a value a is influenced by a heat pump system operation mode (refrigeration/heating) and an indoor set temperature, and a value b is influenced by an outdoor environment temperature (obtained according to the actual tests in the following table), for example, a λ value of a certain room is calculated to be 0.77 under a refrigeration working condition, and at the moment, the indoor set temperature is 24 ℃, the room wind plate inlet water target temperature can be checked to be 8 ℃, if the λ value cannot correspond to a value in the table, interpolation calculation can be carried out to query the corresponding wind plate target inlet water temperature, and under a common condition, the heat pump system temperature control starts to be adjusted with a change of 1 ℃, and the most similar wind plate target inlet water temperature is obtained.
In the scheme of the invention, the outlet water temperature of the heat pump system is more accurately controlled based on the actual load of each indoor room, so that the heat pump system is prevented from always operating according to the required maximum load, and the energy consumption of the heat pump system is reduced. In the scheme of the invention, the parameters (such as beta) can be adjusted according to the actual use condition of the user Automatic correction ) The correction is carried out, and the comfort of the user is improved.
And step S420, determining the wind plate water inlet temperature of the tail wind plate according to the indoor set temperature and the room temperature correction coefficient of the room where each tail wind plate is located based on the corresponding relation among the indoor set temperature, the room temperature correction coefficient and the wind plate water inlet temperature, and determining the wind plate water inlet temperature as the wind plate target water temperature of the tail wind plate.
And step S430, determining the average value of the target water temperatures of the n wind disks of the tail end wind disk, and taking the average value as the target outlet water temperature of the heat pump system.
And step S440, controlling the heat pump system to operate according to the target outlet water temperature.
In the scheme of the invention, the linkage control of various types of air discs and the outdoor unit can be realized, the intelligent level of the heat pump system is improved, and compared with the air disc which is adaptive to the outdoor unit or has a communication function, the use cost of a user is reduced, the energy consumption of the heat pump system is reduced, the heat pump system is more energy-saving, and the comfort of the user is also improved. The linkage control means that the operation of the unit can be controlled through relevant parameters of the air disc, and finally parameters such as the wind gear, the water flow and the like of the air disc are a factor for adjusting the water outlet temperature of the unit.
The control method of the heat pump system provided by the scheme of the invention further comprises a control method of the outlet water temperature of the heat pump system, and the method comprises the following steps: when the heat pump system is used for refrigerating (or heating) control, the coefficient corresponding to the factor influencing the room temperature regulation is determined by taking the target temperature of the air plate of a single room as a unit, the corresponding target water temperature of the air plate is inquired after the correlation coefficient is calculated, finally, the average value of the target water temperatures of all rooms is calculated, the outlet water temperature of the outdoor unit is controlled to operate at the average temperature, and the purpose of regulating the operation of the heat pump system based on the actual load of the room is achieved.
By adopting the technical scheme of the embodiment, the room temperature change rate of each room in a period of time is determined by enabling all the wind disks to be in a full-load capacity output state and enabling the indoor set temperature to be the lowest (high) temperature set by the wind disk factory, the size of the room temperature change rate of each room is used as the basis for determining the wind disk capacity correction coefficient of the corresponding room, the default capacity of the wind disks of each room is corrected by the wind disk capacity correction coefficient of each room in the control process of the heat pump system, the actual capacity of the wind disks of each room is obtained, and the wind disks are controlled to operate at the actual capacity. Therefore, the capacity of the wind plate in each room is at least corrected, the capacity of the wind plate can be identified and corrected according to the actual requirements of each room, the user experience is favorably improved, and the energy is favorably saved. Furthermore, on the basis of correcting the capacity of each fan air disc, the outlet water temperature of the heat pump system is controlled based on the actual load of each room, so that the user experience can be further improved, and the energy-saving control of the heat pump system is further realized.
According to an embodiment of the present invention, there is also provided a control apparatus of a heat pump system corresponding to the control method of the heat pump system. Referring to fig. 6, a schematic diagram of an embodiment of the apparatus of the present invention is shown. The heat pump system includes: heat pump set and terminal wind dish. The number of the tail end wind disks is n, and n is a positive integer. In more than one room inside the room of the heat pump system, one end air disc is arranged for one room, but in practice, at least one end air disc can be arranged for each room according to actual requirements. The number of the tail end wind disks is larger than or equal to the number of more than one room. The control device of the heat pump system includes: an acquisition unit 102 and a control unit 104.
The control unit 104 is configured to, when n terminal air disks need to be debugged, control the n terminal air disks to be in a full load capacity output state, and control the n terminal air disks to operate according to a wind gear where a set maximum air output is located, so as to start debugging the n terminal air disks. The detailed function and processing of the control unit 104 are shown in step S110.
In some embodiments, the controlling unit 104, controlling the n number of the end wind disks to be in the full load capacity output state, includes: the control unit 104 is specifically further configured to control, for the n end wind disks, each end wind disk to operate at a limit temperature of an indoor set temperature. Wherein the limit temperature is the lowest temperature in the cooling mode and the highest temperature in the heating mode.
Fig. 8 is a flowchart illustrating an embodiment of a control device of a heat pump system according to the present invention. As shown in fig. 8, a control device of a heat pump system includes:
step 1, the unit carries out one-key debugging, the capacity of the air disk is tested according to a set working condition, the capacity coefficient of the air disk is further determined according to the temperature change rate of each room, and the specific correction device is as follows:
the host computer debugs the wind dish through a key debugging function, guarantees among the debugging process that all wind dishes are at full load capacity output state, and indoor temperature of setting for the wind dish minimum (high) temperature that leaves factory set: the indoor set temperature under the refrigeration working condition is the lowest refrigeration temperature (for example, 16-20 ℃ and the like) which can be arranged on the temperature controller, and the indoor set temperature under the heating working condition is the highest temperature (for example, 25-30 ℃ and the like). At this point, the heat pump system operates at the lowest (or high) leaving water temperature that can be achieved: the outlet water temperature of the heat pump system under the refrigeration working condition is the lowest outlet water temperature (such as 5-10 ℃) which can be reached, and the heating outlet water temperature of the heat pump system is the highest outlet water temperature (such as 55-75 ℃). All the wind disks operate according to the wind gear of the maximum air output.
The obtaining unit 102 is configured to obtain the room temperature change condition of each room after a first set time. The specific function and processing of the acquiring unit 102 are referred to in step S120.
In some embodiments, the obtaining unit 102 obtains the room temperature change of each room, and includes:
the obtaining unit 102 is specifically further configured to obtain a first room temperature of each room at the end of the first time period, and obtain a second room temperature of the room at the end of the second time period. The first time period is a time period in which the first set time is located, that is, a time period from when the terminal air plate of the room is debugged and started to when the terminal air plate of the room is debugged and ended in each room. The second time period is a time period from the time when the terminal wind plate of each room is debugged to the time when the second set time is over, namely the time period of the second set time. The specific functions and processes of the acquisition unit 102 are also referred to in step S210.
The obtaining unit 102 is specifically further configured to use a difference between the second room temperature and the first room temperature as a room temperature change condition of the room. The specific function and processing of the acquisition unit 102 are also referred to in step S220.
As shown in fig. 8, a control device of a heat pump system further includes: in step 1, after all the wind disks operate according to the wind gear of the maximum air output and continuously operate for a period of time (for example, 15-25 min), the storage module 6 records the room temperature change condition of each room, and the data processing module 7 starts the self-debugging of each room to the first room temperature T of the first set time T1 n1 And a second room temperature T from the end of the test to a second set time T2 n2 And (6) carrying out comparison.
The control unit 104 is further configured to determine a capacity coefficient of the end wind disk arranged for each room according to the room temperature change condition of the room; and the capacity coefficient of the tail end wind disc can represent the proportion of the current output load of the tail end wind disc to the total output load of the tail end wind disc. The specific function and processing of the control unit 104 are also referred to in step S130.
In some embodiments, the determining, by the control unit 104, a capacity coefficient of the end wind disk arranged for each room according to the room temperature variation condition of the room includes:
the control unit 104 is specifically further configured to determine a ratio of the room temperature change condition of each room to a time period during which the room temperature change condition occurs, as the room temperature change rate of the room. The specific functions and processes of the control unit 104 are also referred to in step S310.
The control unit 104 is further configured to allocate a capacity percentage of all the end wind disks according to a size of a room temperature change rate of the room, and determine the capacity percentage as a capacity coefficient of the end wind disks arranged for the room. The specific functions and processes of the control unit 104 are also referred to in step S320.
In step 1, after all the wind disks operate according to the wind gear of the maximum air output and continuously operate for a period of time (for example, 15-25 min), the storage module 6 records the room temperature change condition of each room, and the data processing module 7 starts the self-debugging of each room to the first room temperature T of the first set time T1 n1 And a second room temperature T from the end of the test to a second set time T2 n2 And comparing, and finally redistributing the capacity percentage of the wind disk capacity in the order of the magnitude of the room temperature difference change rate so as to obtain the capacity coefficient (namely the wind disk capacity coefficient). n represents the number of the wind disks, and n is a positive integer.
Wherein, the rate of change of the room temperature difference is recorded as a rate of change of temperature ζ:
Figure GDA0003893594260000161
where ζ represents the rate of change of the temperature in the chamber over time. The faster the room temperature changes, the smaller the room load or the larger the capacity of the wind disk, the smaller the water temperature demand of the wind disk, and the smaller the proportion of the temperature difference in actual operation.
Certainly, in subsequent operation, when the product of the water temperature correction coefficient of the corresponding room and the room temperature setting correction coefficient needs to be calculated, corresponding calculation is carried out according to the capacity coefficient set after debugging each room.
The invention provides a control device of a heat pump system, which comprises a device for identifying and correcting the capacity of a wind disk, and the device comprises: setting a room target temperature, starting all the wind disks to operate at a high wind level, recording the change condition of the room temperature within a period of time, dividing the capacity of the wind disks according to the temperature change rate, determining the capacity correction coefficient of the wind disks, and calculating by using the capacity correction coefficient in the actual operation process. In the scheme of the invention, the capacity of the wind disk is identified and corrected by the one-key debugging function, so that the identification and correction of the capacity of the wind disk can be realized, the problem that the selection of the capacity of the wind disk is not matched with the actual demand of a room in the room temperature adjusting process is solved, and the intelligent level of a heat pump system is improved.
The control unit 104 is further configured to control the operation of the heat pump system according to the capacity coefficient of each of the end wind disks and the indoor set temperature of the room where the end wind disk is located. The specific function and processing of the control unit 104 are also referred to in step S140.
Fig. 7 is a schematic diagram of an embodiment of a heat pump system. As shown in fig. 7, a heat pump system includes: the outdoor unit comprises an outdoor unit 1, an air disc 2, an ambient temperature sensor 3, an outdoor unit mainboard 4, a control center 5, a storage module 6, a data processing module 7 and a control module 8. The ambient temperature sensor 3 and the outdoor unit main board 4 are respectively provided in the outdoor unit 1. The number of the wind disks 2 is multiple, and the wind disks 2 are arranged at the indoor side in parallel. The plurality of air disks 2 can be communicated with the outdoor unit main board 4. The control center 5 is provided on the indoor side. A plurality of winddisks 2 are each capable of communicating with a control center 5. The storage module 6, the data processing module 7 and the control module 8 are arranged in the control center 5.
In the related scheme, the air disks used by the users are divided equally according to 100% capacity proportion by default, and the requirements of each room on the capacity of the air disks are different in the actual use process. The invention provides a device for identifying and correcting the capacity of an air disc, which can correct the capacity of the air disc by adding a one-key debugging and verifying function, solve the problem that the capacity selection of the air disc is not matched with the actual capacity requirement of a room in the room temperature adjusting process, and also solve the problems that a heat pump system cannot be adapted to various air discs, the outlet water temperature of the heat pump system cannot be automatically matched based on the indoor load change, the user experience is influenced, and the energy is not saved.
In some embodiments, the controlling unit 104 controls the operation of the heat pump system according to the capacity coefficient of each end wind disk and the indoor set temperature of the room where the end wind disk is located, including:
the control unit 104 is specifically further configured to determine a room temperature correction coefficient of a room where each of the end wind disks is located according to the capacity coefficient of the end wind disk. The specific functions and processes of the control unit 104 are also referred to in step S410.
In some embodiments, the determining, by the control unit 104, a room temperature correction coefficient of a room in which each of the end wind disks is located according to the capacity coefficient of the end wind disk includes:
the control unit 104 is further configured to determine a product of a capacity coefficient of each of the end wind disks, a wind level correction coefficient of the end wind disk, a water flow correction coefficient of the end wind disk, and a user correction coefficient for the end wind disk as a correction coefficient of the end wind disk. User correction factor, e.g. beta, of the end flap Automatic correction . The specific functions and processes of the control unit 104 are also referred to in step S510.
The control unit 104 is specifically further configured to determine a difference between an outdoor temperature of the heat pump system and an indoor set temperature of a room in which each of the end wind disks is located as an actual temperature difference, such as Δ T, of the room in which the end wind disk is located Actual temperature difference . The specific functions and processes of the control unit 104 are also referred to in step S520.
The control unit 104 is specifically further configured to determine a difference between an outdoor design temperature of the heat pump system and an indoor design temperature of a room in which each of the end wind disks is located as a design temperature difference, such as Δ T, of the room in which the end wind disk is located Design temperature . The specific functions and processes of the control unit 104 are also referred to in step S530.
The control unit 104 is further configured to determine a product of the correction factor of each of the end wind disks and a design temperature difference of a room in which the end wind disk is located. And determining the ratio of the actual temperature difference of the room where each tail end wind disk is positioned to the product as the room temperature correction coefficient of the room where the tail end wind disk is positioned. The specific functions and processes of the control unit 104 are also referred to in step S540.
As shown in fig. 8, a control device of a heat pump system further includes:
and 2, determining each correction coefficient, and simultaneously calculating a product lambda of the water temperature correction coefficient of the corresponding room and the room temperature setting correction coefficient. The product lambda of the water temperature correction coefficient and the room temperature setting correction coefficient is calculated because each correction coefficient influences the outlet water temperature and simultaneously adjusts the room temperature setting temperature, so that the product lambda is uniformly processed and calculated. The product lambda is used to find the corresponding coil outlet water temperature in the table, so as to further obtain the outlet water temperature of the heat pump system.
The product lambda calculation formula of the water temperature correction coefficient and the room temperature setting correction coefficient of the room is as follows:
Figure GDA0003893594260000181
ΔT actual temperature difference ＝T Outdoor temperature -T Indoor set temperature 。
ΔT Design temperature ＝T Outdoor design temperature -T Indoor design temperature 。
β＝β Capacity correction *β Windshield correction *β Flow correction *β Automatic correction 。
Wherein, T Outdoor temperature : outdoor ambient temperature sensed by the ambient bulb during operation. T is Indoor set temperature : the temperature controller opened indoors sets the air outlet temperature. T is Outdoor design temperature : during engineering design, the outdoor environment temperature value used for reference can be adjusted through the background of the manual operator. T is Indoor design temperature : during engineering design, the indoor temperature for reference can be adjusted through the background of the manual operator. Beta is a Capacity correction : and the fan coil capacity coefficient (default is 1) is obtained according to the air coil capacity identification and correction device, so that the influence of unmatched air coil capacity type selection and the actual capacity requirement of a room in the room temperature adjusting process is eliminated. Beta is a beta Windshield correction : the fan coil corresponds to the coefficient of the wind gear under different air output, and different air output can directly influence the adjusting process of the heat pump system due to different actual air output requirements of users, so the wind gear needs to be corrected, the coefficient of the wind gear with the largest air output defaults to 1, and the same principle is adopted under other air output (for example, under the refrigeration working condition, the wind gear of the heat pump system can be divided into three gears of high gear, medium gear and low gear, the corresponding coefficients are respectively 1, 0.8 and 0.7, and under the heating working condition, different gear levels correspond to different coefficients). Beta is a Flow rateCorrection : in practical engineering application, along with the reduction of water flow, the correction coefficient corresponding to the actual water flow of the fan coil continuously increases the temperature difference between supply water and return water, and the water flow and the temperature difference between the supply water and the return water have a certain functional relationship g = f (x). For example:
Figure GDA0003893594260000182
wherein the alpha is a constant, and the alpha is a linear alpha,
Figure GDA0003893594260000183
affected by the flow rate. In the scheme of the invention, the measurement of the real-time flow is not set, namely the influence of the flow is not considered, so that the default correction coefficient is 1. Beta is a Automatic correction : in the actual operation process of the heat pump system, the heat pump system is adjusted according to the requirements of a user, but the user feels that the comfort level is not good in the adjustment process, and then program adjustment can be carried out by contacting engineering personnel, wherein beta is beta Automatic correction (default of factory is 1.0), and the program correction range is 0.8-1.2.
According to the scheme, the control device of the heat pump system is provided, the capacity of the air disc is identified and corrected, influence factors of the outlet water temperature of the heat pump system are comprehensively analyzed, the inlet water temperature of the air disc corresponding to the outlet air temperature of each room is obtained, and the outlet water temperature of the heat pump system is obtained through calculation, so that the intelligent control of the outlet water temperature of the heat pump system is accurately realized based on the actual load of each room, the user experience is improved, and the energy conservation is facilitated.
Step 3 and fig. 9 are wind disk target water temperature lookup tables according to an embodiment of the heat pump system of the present invention, in the wind disk target water temperature (i.e., wind disk inlet water temperature) lookup table, a first row is an indoor set temperature, a first column is a wind disk inlet water temperature, and a middle portion is a room temperature correction coefficient λ. And inquiring a target water temperature inquiry table (shown in figure 9) of the air disc of each room according to the product of the water temperature correction coefficient and the room temperature setting correction coefficient, calculating the average value of the target water temperature inquiry tables, and adjusting the outlet water temperature of the heat pump system according to the average value.
In the process of cooling (heating), the target water temperature of each room is based on the target water temperature of the air disc of each room by defaultThe indoor and outdoor design temperature and the outdoor real-time temperature, the indoor temperature controller set room temperature, the wind disc wind gear, the wind disc water flow, the wind disc capacity and the automatic correction coefficient of the heat pump system are calculated, the product lambda of the water temperature correction coefficient of the corresponding room and the room temperature set correction coefficient is calculated and recorded as the room temperature correction coefficient lambda, and the room temperature correction coefficient lambda is used for obtaining the wind disc water inlet temperature by searching a wind disc target water temperature query table (indoor set temperature/wind disc water inlet temperature table) which is input into the storage module 6, so that the corresponding wind disc target water temperature is obtained (namely the wind disc water inlet temperature is used as the wind disc target water temperature). Then the target water temperature average value of the opening air discs of each room is calculated to obtain the target outlet water temperature T of the heat pump system Target outlet water temperature of heat pump system And finally the heat pump system is according to T Target outlet water temperature of heat pump system Operation:
Figure GDA0003893594260000191
the wind plate target water temperature query table is obtained according to actual tests, the overall trend of the wind plate target water temperature query table accords with a certain function model, and a linear function model lambda = ax + b is taken as an example, wherein a value is influenced by a heat pump system operation mode (refrigeration/heating) and an indoor set temperature, and b value is influenced by an outdoor environment temperature (obtained according to the actual tests in the following table), for example, a lambda value of a certain room is calculated to be 0.77 under a refrigeration working condition, and the indoor set temperature is 24 ℃, the room wind plate inlet water target temperature can be found to be 8 ℃, if the lambda value cannot correspond to the value in the table, interpolation calculation can be carried out to query the corresponding wind plate target inlet water temperature, and the most similar wind plate target inlet water temperature is obtained when the heat pump system temperature is controlled to start to be adjusted at 1 ℃.
In the scheme of the invention, the outlet water temperature of the heat pump system is more accurately controlled based on the actual load of each indoor room, so that the heat pump system is prevented from always operating according to the required maximum load, and the energy consumption of the heat pump system is reduced. According to the scheme of the invention, the adjustment parameters can be corrected according to the actual use condition of the user, so that the comfort of the user is improved.
The control unit 104 is further specifically configured to determine, based on a corresponding relationship between the indoor set temperature, the room temperature correction coefficient, and the wind pan inlet water temperature, the wind pan inlet water temperature of the terminal wind pan according to the indoor set temperature and the room temperature correction coefficient of the room in which each terminal wind pan is located, and determine the wind pan inlet water temperature as the wind pan target water temperature of the terminal wind pan. The specific function and processing of the control unit 104 are also referred to in step S420.
The control unit 104 is specifically further configured to determine an average value of the target water temperatures of the n end winddisks, and use the average value as the target outlet water temperature of the heat pump system. The specific functions and processes of the control unit 104 are also referred to in step S430.
The control unit 104 is specifically further configured to control the heat pump system to operate according to the target outlet water temperature. The specific functions and processes of the control unit 104 are also referred to in step S440.
The invention provides a control device of a heat pump system, which also comprises a control method of the outlet water temperature of the heat pump system, and the device comprises the following components: when the heat pump system is used for refrigerating (or heating) control, the coefficient corresponding to the factor influencing the room temperature regulation is determined by taking the target temperature of the air plate of a single room as a unit, the corresponding target water temperature of the air plate is inquired after the correlation coefficient is calculated, finally, the average value of the target water temperatures of all rooms is calculated, the outlet water temperature of the outdoor unit is controlled to operate at the average temperature, and the purpose of regulating the operation of the heat pump system based on the actual load of the room is achieved.
In the scheme of the invention, the linkage control of various types of air discs and the outdoor unit can be realized, the intelligent level of the heat pump system is improved, and compared with the air disc which is adaptive to the outdoor unit or has a communication function, the use cost of a user is reduced, the energy consumption of the heat pump system is reduced, the heat pump system is more energy-saving, and the comfort of the user is also improved.
Since the processes and functions implemented by the apparatus of this embodiment substantially correspond to the embodiments, principles and examples of the method, reference may be made to the related descriptions in the embodiments without being detailed in the description of this embodiment, which is not described herein again.
By adopting the technical scheme of the invention, the room temperature change rate of each room in a period of time is determined by enabling all the air disks to be in a full-load capacity output state and enabling the indoor set temperature to be the factory-set lowest (high) temperature of the air disks, the size of the room temperature change rate of each room is taken as the basis for determining the air disk capacity correction coefficient of the corresponding room, the default capacity of the air disks of each room is corrected by the air disk capacity correction coefficient of each room in the control process of the heat pump system, the actual capacity of the air disks of each room is obtained, and the air disks are controlled to operate at the actual capacity; on the basis of correcting the capacity of each fan air disc, the outlet water temperature of the heat pump system is controlled based on the actual load of each room, the problem that the capacity selection of the air discs is not matched with the actual demand of the rooms in the room temperature adjusting process is solved, and the intelligent level of the heat pump system is improved.
According to an embodiment of the present invention, there is also provided a heat pump system corresponding to the control device of the heat pump system. The heat pump system may include: the control device for a heat pump system described above.
Since the processes and functions of the heat pump system of this embodiment are basically corresponding to the embodiments, principles and examples of the foregoing devices, reference may be made to the relevant descriptions in the foregoing embodiments without being repeated in detail in the description of this embodiment.
By adopting the technical scheme of the invention, the room temperature change rate of each room in a period of time is determined by enabling all the air disks to be in a full-load capacity output state and enabling the indoor set temperature to be the factory-set lowest (high) temperature of the air disks, the size of the room temperature change rate of each room is taken as the basis for determining the air disk capacity correction coefficient of the corresponding room, the default capacity of the air disks of each room is corrected by the air disk capacity correction coefficient of each room in the control process of the heat pump system, the actual capacity of the air disks of each room is obtained, and the air disks are controlled to operate at the actual capacity; and on the basis of correcting the capacity of each fan air disc, the outlet water temperature of the heat pump system is controlled based on the actual load of each room, so that the user experience is improved, and the energy conservation is facilitated.
According to an embodiment of the present invention, there is also provided a storage medium corresponding to a control method of a heat pump system, the storage medium including a stored program, wherein an apparatus in which the storage medium is located is controlled to execute the control method of the heat pump system described above when the program is run.
Since the processing and functions implemented by the storage medium of this embodiment substantially correspond to the embodiments, principles, and examples of the foregoing method, reference may be made to the related descriptions in the foregoing embodiments without being detailed in the description of this embodiment.
By adopting the technical scheme of the invention, the room temperature change rate of each room in a period of time is determined by enabling all the air disks to be in a full-load capacity output state and enabling the indoor set temperature to be the factory-set lowest (high) temperature of the air disks, the size of the room temperature change rate of each room is taken as the basis for determining the air disk capacity correction coefficient of the corresponding room, the default capacity of the air disks of each room is corrected by the air disk capacity correction coefficient of each room in the control process of the heat pump system, the actual capacity of the air disks of each room is obtained, and the air disks are controlled to operate at the actual capacity; on the basis of correcting the capacity of each fan air disc, the outlet water temperature of the heat pump system is controlled based on the actual load of each room, so that the heat pump system is prevented from always running according to the required maximum load, and the energy consumption of the heat pump system is reduced; the comfort of the user is improved.
In summary, it is readily understood by those skilled in the art that the advantageous modes described above can be freely combined and superimposed without conflict.
The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (14)

1. A control method of a heat pump system, characterized in that the heat pump system includes: a heat pump unit and a tail end air disc; the number of the tail end wind disks is n, and n is a positive integer; one said end wind disk is arranged for one said room in more than one room on the indoor side of said heat pump system; the control method of the heat pump system comprises the following steps:
under the condition that n terminal air disks need to be debugged, controlling the n terminal air disks to be in a full-load capacity output state, and controlling the n terminal air disks to run according to a wind gear where a set maximum air output is located so as to start debugging the n terminal air disks;
after the first set time, acquiring the room temperature change condition of each room;
determining a capacity coefficient of the tail end wind disc arranged for each room according to the room temperature change condition of the room; the capacity coefficient of the tail end wind disc can represent the proportion of the current output load of the tail end wind disc to the total output load of the tail end wind disc;
controlling the operation of the heat pump system according to the capacity coefficient of each tail end air disc and the indoor set temperature of the room where the tail end air disc is located;
the method comprises the steps of determining the room temperature change rate of each room within a period of time by enabling all the air disks to be in a full-load capacity output state and enabling the indoor set temperature to be the lowest or highest temperature set by the factory-delivered air disks, taking the room temperature change rate of each room as a basis for determining the air disk capacity correction coefficient of the corresponding room, correcting the default capacity of each room air disk by the air disk capacity correction coefficient of each room in the control process of the heat pump system to obtain the actual capacity of each room air disk, and controlling each air disk to operate at the actual capacity.
2. The method of controlling a heat pump system according to claim 1, wherein controlling the n number of end discs each in a full load capacity output state includes:
for the n tail end wind disks, controlling each tail end wind disk to operate according to the limit temperature of the indoor set temperature; wherein the limit temperature is the lowest temperature in the cooling mode and the highest temperature in the heating mode.
3. The method for controlling a heat pump system according to claim 1, wherein the acquiring of the room temperature change condition of each room comprises:
acquiring a first room temperature of each room at the end of a first time period, and acquiring a second room temperature of the room at the end of a second time period; wherein, the first time period is the time period of the first set time; the second time period is a time period from the time when the terminal air plate of each room is debugged to the time when the second set time is over;
and taking the difference value of the second room temperature and the first room temperature as the room temperature change condition of the room.
4. The method for controlling the heat pump system according to claim 1, wherein determining the capacity coefficient of the end wind disk arranged for each room according to the room temperature change condition of the room comprises:
determining the ratio of the room temperature change condition of each room to the time period of the room temperature change condition as the room temperature change rate of the room;
and allocating the capacity percentage of all the end wind disks according to the room temperature change rate of the room, and determining the capacity percentage as the capacity coefficient of the end wind disks arranged for the room.
5. The method for controlling a heat pump system according to any one of claims 1 to 4, wherein the controlling the operation of the heat pump system according to the capacity coefficient of each of the end wind disks and the indoor set temperature of the room in which the end wind disk is located includes:
determining a room temperature correction coefficient of a room where the tail end wind disc is located according to the capacity coefficient of each tail end wind disc;
determining the air plate inlet water temperature of the tail end air plate according to the indoor set temperature and the room temperature correction coefficient of the room where each tail end air plate is located based on the corresponding relation among the indoor set temperature, the room temperature correction coefficient and the air plate inlet water temperature, and determining the air plate inlet water temperature as the air plate target water temperature of the tail end air plate;
determining the average value of the target water temperatures of the n wind disks of the tail end wind disk, and taking the average value as the target outlet water temperature of the heat pump system;
and controlling the heat pump system to operate according to the target outlet water temperature.
6. The method for controlling the heat pump system according to claim 5, wherein determining the room temperature correction coefficient of the room in which each of the end wind disks is located according to the capacity coefficient of the end wind disk comprises:
determining the product of the capacity coefficient of each tail end wind disk, the wind shield correction coefficient of the tail end wind disk, the water flow correction coefficient of the tail end wind disk and the user correction coefficient aiming at the tail end wind disk as the correction coefficient of the tail end wind disk;
determining the difference value between the outdoor temperature of the heat pump system and the indoor set temperature of the room where each tail end air disc is located as the actual temperature difference of the room where the tail end air disc is located;
determining the difference value between the outdoor design temperature of the heat pump system and the indoor design temperature of the room where each tail end air disc is located as the design temperature difference value of the room where the tail end air disc is located;
determining the product of the correction coefficient of each tail wind disc and the design temperature difference of the room where the tail wind disc is located; and determining the ratio of the actual temperature difference of the room where each tail end wind disk is positioned to the product as the room temperature correction coefficient of the room where the tail end wind disk is positioned.
7. A control device of a heat pump system, characterized in that the heat pump system includes: a heat pump unit and a tail end air disc; the number of the tail end wind discs is n, and n is a positive integer; one said end wind disk is arranged for one said room in more than one room on the indoor side of said heat pump system; the control device of the heat pump system includes:
the control unit is configured to control the n tail end wind disks to be in a full-load capacity output state under the condition that the n tail end wind disks need to be debugged, and control the n tail end wind disks to operate according to a wind gear where a set maximum air output is located so as to start debugging the n tail end wind disks;
the acquisition unit is configured to acquire the room temperature change condition of each room after a first set time;
the control unit is further configured to determine a capacity coefficient of the tail end wind disc arranged for each room according to the room temperature change condition of the room; the capacity coefficient of the tail end wind disc can represent the proportion of the current output load of the tail end wind disc to the total output load of the tail end wind disc;
the control unit is further configured to control the operation of the heat pump system according to the capacity coefficient of each tail end air disc and the indoor set temperature of the room where the tail end air disc is located;
the method comprises the steps of determining the room temperature change rate of each room in a period of time by enabling all the air disks to be in a full-load capacity output state and enabling the indoor set temperature to be the lowest or highest temperature set by the factory-leaving of the air disks, taking the room temperature change rate of each room as a basis for determining the air disk capacity correction coefficient of the corresponding room, correcting the default capacity of the air disks of each room by the air disk capacity correction coefficient of each room in the control process of the heat pump system to obtain the actual capacity of the air disks of each room, and controlling the air disks to operate at the actual capacity.
8. The control device of the heat pump system according to claim 7, wherein the control unit controls each of the n number of end wind disks in a full load capacity output state, and includes:
aiming at the n terminal air disks, controlling each terminal air disk to operate according to the limit temperature of the indoor set temperature; wherein the limit temperature is the lowest temperature in the cooling mode and the highest temperature in the heating mode.
9. The control device of the heat pump system according to claim 7, wherein the acquiring unit acquires the room temperature change condition of each of the rooms, and includes:
acquiring a first room temperature of each room at the end of a first time period, and acquiring a second room temperature of the room at the end of a second time period; wherein, the first time period is the time period of the first set time; the second time period is a time period from the time when the debugging of the tail end air disc of each room is finished to the time when the second set time is finished;
and taking the difference value of the second room temperature and the first room temperature as the room temperature change condition of the room.
10. The control device of the heat pump system according to claim 7, wherein the control unit determines the capacity coefficient of the end wind disk arranged for each room according to the room temperature change condition of the room, and includes:
determining the ratio of the room temperature change condition of each room to the time period of the room temperature change condition as the room temperature change rate of the room;
and according to the room temperature change rate of the room, allocating the capacity percentage of all the end wind disks, and determining the capacity percentage as the capacity coefficient of the end wind disks arranged for the room.
11. The control device of the heat pump system according to any one of claims 7 to 10, wherein the control unit controls the operation of the heat pump system according to the capacity coefficient of each of the end wind disks and the indoor set temperature of the room in which the end wind disk is located, and includes:
determining a room temperature correction coefficient of a room where the tail end wind disc is located according to the capacity coefficient of each tail end wind disc;
determining the air plate inlet water temperature of the tail end air plate according to the indoor set temperature and the room temperature correction coefficient of the room where each tail end air plate is located based on the corresponding relation among the indoor set temperature, the room temperature correction coefficient and the air plate inlet water temperature, and determining the air plate inlet water temperature as the air plate target water temperature of the tail end air plate;
determining the mean value of the target water temperatures of the n wind disks of the tail end wind disk, and taking the mean value as the target outlet water temperature of the heat pump system;
and controlling the heat pump system to operate according to the target outlet water temperature.
12. The control device of the heat pump system according to claim 11, wherein the control unit determines a room temperature correction coefficient of a room in which each of the end wind disks is located, based on the capacity coefficient of the end wind disk, and includes:
determining the product of the capacity coefficient of each tail end wind disk, the wind shield correction coefficient of the tail end wind disk, the water flow correction coefficient of the tail end wind disk and the user correction coefficient aiming at the tail end wind disk as the correction coefficient of the tail end wind disk;
determining the difference value between the outdoor temperature of the heat pump system and the indoor set temperature of the room where each tail end air disc is located as the actual temperature difference of the room where the tail end air disc is located;
determining the difference value between the outdoor design temperature of the heat pump system and the indoor design temperature of the room where each tail end air disc is located as the design temperature difference value of the room where the tail end air disc is located;
determining the product of the correction coefficient of each tail wind disc and the design temperature difference of the room where the tail wind disc is located; and determining the ratio of the actual temperature difference of the room where each tail end wind disk is positioned to the product as the room temperature correction coefficient of the room where the tail end wind disk is positioned.
13. A heat pump system, comprising: a control device of a heat pump system according to any one of claims 7 to 12.
14. A storage medium characterized by comprising a stored program, wherein an apparatus in which the storage medium is stored is controlled to execute the control method of the heat pump system according to any one of claims 1 to 6 when the program is executed.
CN202111433249.8A 2021-11-29 2021-11-29 Control method and device of heat pump system, heat pump system and storage medium Active CN114110935B (en)

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