Heat pump dual-combined supply system, control method and device thereof and medium

Abstract

The invention discloses a control method and device for a heat pump dual-combined supply system and the heat pump dual-combined supply system. The control method comprises the steps that an outdoor unit and a target air conditioner terminal are started, and the target air conditioner terminal belongs to at least one of M air conditioner terminals; after the outdoor unit and the target air conditioner terminal operate to meet a first set condition, the hydraulic module is started, so that the outdoor unit, the target air conditioner terminal, the hydraulic module and the target water terminal operate together, the first set condition represents that the indoor temperature reaches the first set temperature, and the target water terminal belongs to at least one of the M water terminals; and after the outdoor unit, the target air conditioner terminal, the hydraulic module and the target water terminal jointly operate to meet a second set condition, the target air conditioner terminal is closed, and the second set condition represents that the water outlet temperature of the hydraulic module reaches the second set temperature. By means of the method and device, the technical problem that the user comfort is low when the heat pump dual-combined supply system is started is solved.

Description

Technical Field

[0001] This invention belongs to the field of home appliance technology, and in particular relates to a heat pump dual-supply system and its control method, device and medium. Background Technology

[0002] "Heavenly Fluorine-Water Underfloor Heating" is a dual-supply heat pump system combining central air conditioning and underfloor heating. The central air conditioning system at the top uses a "fluorine system" for cooling or heating, while the underfloor heating system uses a "water system" for both. In summer, the "fluorine system" is typically activated alone for cooling, while in winter, both systems can be used simultaneously for heating. Theoretically, simultaneous operation of both systems can achieve efficient temperature increases. However, because the capacity of the hydraulic module in the "water system" is approximately twice the combined capacity of all the air conditioning terminals in the "fluorine system" (outdoor unit), when multiple indoor units of the central air conditioning system at the top and the hydraulic module at the bottom are running simultaneously, the low outlet water temperature of the hydraulic module results in slow underfloor heating temperature increases. Furthermore, the prolonged continuous operation of each indoor unit with insufficient heat output leads to poor user comfort. Summary of the Invention

[0003] This invention provides a combined heat pump system and its control method, device and medium, which at least solves the technical problem of low user comfort during the start-up of the combined heat pump system.

[0004] In a first aspect of the present invention, a control method for a combined heat pump and cooling system is provided. The combined heat pump and cooling system includes an outdoor unit, a hydraulic module connected to the outdoor unit, and M air conditioning terminals. The hydraulic module is also connected to M water terminals, where M is a positive integer. The method includes: turning on the outdoor unit and a target air conditioning terminal, wherein the target air conditioning terminal is at least one of the M air conditioning terminals; after the outdoor unit and the target air conditioning terminal operate to meet a first preset condition, turning on the hydraulic module to enable the outdoor unit, the target air conditioning terminal, the hydraulic module, and the target water terminals to operate together, wherein the first preset condition indicates that the indoor temperature reaches a first preset temperature, and the target water terminal is at least one of the M water terminals; and after the outdoor unit, the target air conditioning terminal, the hydraulic module, and the target water terminals operate together to meet a second preset condition, turning off the target air conditioning terminal, wherein the second preset condition indicates that the outlet water temperature of the hydraulic module reaches a second preset temperature.

[0005] In some implementations, during the joint operation of the outdoor unit, the target air conditioning terminal, and the target water terminal, the capacity ratio of the target air conditioning terminal is gradually reduced to meet the second set condition.

[0006] In some embodiments, gradually reducing the capacity percentage of the target air conditioning terminal during the joint operation of the outdoor unit, the target air conditioning terminal, and the target water terminal includes: obtaining the desired capacity percentage of the hydraulic module; during the joint operation of the target air conditioning terminal and the target water terminal, obtaining the current capacity percentage of the hydraulic module at a preset cycle, and after each acquisition of the current capacity percentage of the hydraulic module, reducing the capacity percentage of the target air conditioning terminal according to the current capacity percentage of the hydraulic module and the desired capacity percentage of the hydraulic module, until the second preset condition is met.

[0007] In some implementations, the step of reducing the capacity percentage of the target air conditioning terminal after each acquisition of the current capacity percentage of the hydraulic module, based on the current capacity percentage of the hydraulic module and the expected capacity percentage of the hydraulic module, includes: after each acquisition of the current capacity percentage of the hydraulic module, determining the current capacity percentage reduction amount for the target air conditioning terminal based on the current capacity percentage of the hydraulic module and the expected capacity percentage of the hydraulic module; and reducing the capacity percentage of the target air conditioning terminal based on the current capacity percentage reduction amount.

[0008] In some implementations, determining the current capacity percentage reduction amount for the target air conditioning terminal based on the current capacity percentage of the hydraulic module and the expected capacity percentage of the hydraulic module includes: determining a current capacity deviation based on the current capacity percentage of the hydraulic module and the expected capacity percentage of the hydraulic module; obtaining the current capacity percentage of the target air conditioning terminal and determining a reference capacity percentage based on the current capacity percentage of the target air conditioning terminal, the current capacity deviation, and a preset adjustment duration parameter; and determining the current capacity percentage reduction amount based on the current capacity percentage of the target air conditioning terminal and the reference capacity percentage.

[0009] In some embodiments, the M air conditioning terminals are connected to the outdoor unit via a first throttling component, and the hydraulic module is connected to the outdoor unit via a second throttling component; the step of reducing the capacity percentage of the target air conditioning terminal according to the current capacity percentage reduction amount includes: determining the amount of reduction in the opening of the first throttling component based on the current capacity percentage reduction amount; and reducing the opening of the first throttling component based on the reduction in the opening amount, so as to reduce the capacity percentage of the target air conditioning terminal.

[0010] In some implementations, obtaining the current capacity percentage of the hydraulic module according to a preset period includes: determining the air conditioning terminal activation rate of the heat pump dual-supply system; and determining the current capacity percentage of the hydraulic module based on the air conditioning terminal activation rate and the current outlet water temperature of the hydraulic module.

[0011] In some implementations, the method further includes: during the joint operation of the outdoor unit and the target air conditioning terminal, if the indoor temperature reaches a first temperature threshold or the continuous operating time of the target air conditioning terminal reaches a first set time, it is determined that the first set condition is met.

[0012] In some embodiments, the method further includes: during the joint operation of the outdoor unit, the target air conditioning terminal, the hydraulic module, and the target water terminal, if the outlet water temperature of the hydraulic module reaches a second temperature threshold or the current capacity ratio of the target air conditioning terminal drops below a preset ratio threshold, it is determined that the second set condition is met; wherein, the second temperature threshold is not less than the second set temperature.

[0013] In a second aspect of the invention, a control device for a combined heat pump and cooling system is provided. The combined heat pump and cooling system includes an outdoor unit, a hydraulic module connected to the outdoor unit, and M air conditioning terminals. The hydraulic module is also connected to M water terminals, where M is a positive integer. The control device includes: a first activation unit for activating the outdoor unit and a target air conditioning terminal, wherein the target air conditioning terminal is at least one of the M air conditioning terminals; a second activation unit for activating the hydraulic module after the outdoor unit and the target air conditioning terminal have operated to meet a first preset condition, so that the outdoor unit, the target air conditioning terminal, the hydraulic module, and the target water terminal operate together, wherein the first preset condition indicates that the indoor temperature has reached a first preset temperature, and the target water terminal is at least one of the M water terminals; and a shutdown unit for shutting down the target air conditioning terminal after the outdoor unit, the target air conditioning terminal, the hydraulic module, and the target water terminal have operated together to meet a second preset condition, wherein the second preset condition indicates that the outlet water temperature of the hydraulic module has reached a second preset temperature.

[0014] In a third aspect of the invention, a combined heat pump system is provided, comprising: an outdoor unit; a hydraulic module and M air conditioning terminals connected to the outdoor unit; M water terminals connected to the hydraulic module, where M is an integer greater than 1; a processor; and a memory for storing executable instructions of the processor, wherein the processor is configured to execute the instructions to implement a control method for the combined heat pump system as described in any embodiment of the first aspect.

[0015] In a fourth aspect of the invention, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the control method for a combined heat pump system according to any embodiment of the first aspect.

[0016] The one or more technical solutions provided in the embodiments of the present invention achieve at least the following technical effects or advantages:

[0017] By first turning on the outdoor unit and the target air conditioning terminal, and then turning on the hydraulic module after the outdoor unit and the target air conditioning terminal have run until the first set condition is met, the first set condition represents the indoor temperature reaching the first set temperature. In the initial stage after the heat pump dual-supply system is turned on, only the target air conditioning terminal is running indoors, and the capacity of the outdoor unit can be fully used to meet the operation of the target air conditioning terminal. This allows the indoor temperature to rise rapidly in the initial stage to quickly reach the first set temperature, reducing the running time of the target air conditioning terminal and improving user comfort. After the first set condition is met, the activation of the hydraulic module enables the outdoor unit, the target air conditioning terminal, the hydraulic module, and the target water terminal to operate together. Since the target air conditioning terminal is shut off only after the outdoor unit, the target air conditioning terminal, the hydraulic module, and the target water terminal operate together until the second set condition is met, the second set condition indicates that the outlet water temperature of the hydraulic module has reached the second set temperature. This ensures that the outlet water temperature of the hydraulic module is sufficient to maintain subsequent heating or cooling for the room. Shutting off the target air conditioning terminal under this condition achieves a smooth switch from the target air conditioning terminal to the target water terminal, rather than a direct switch. This avoids the operational control difficulties of a direct switch from the target air conditioning terminal to the target water terminal, thereby improving the operational reliability and stability of the heat pump dual-supply system and reducing room temperature fluctuations during the switch from the target air conditioning terminal to the hydraulic module, thus improving user comfort. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of a heat pump dual-supply system in some embodiments of the present invention is shown;

[0020] Figure 2 A flowchart of a control method for a combined heat pump and combined heat and power system in some embodiments of the present invention is shown;

[0021] Figure 3 The control logic of the control method for the heat pump dual-supply system in some embodiments of the present invention is shown;

[0022] Figure 4 A schematic diagram of the control device for a heat pump dual-supply system in some embodiments of the present invention is shown;

[0023] Figure 5A schematic diagram of a heat pump dual-supply system in some embodiments of the present invention is shown. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0025] In addition, in the present invention, descriptions such as "first" and "second" are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0026] This invention provides a control method for a combined heat pump and combined heat and power system, such as... Figure 1 As shown, the heat pump dual-supply system includes an outdoor unit, a hydraulic module connected to the outdoor unit, and M air conditioning terminals. The hydraulic module is also connected to M water terminals, where M is a positive integer. At least the outdoor unit and the M air conditioning terminals constitute a refrigerant system, where the air conditioning terminals are also the indoor units. The refrigerant system directly transfers the energy stored in the refrigerant of the outdoor unit to the indoor space. The outdoor unit, hydraulic module, and M water terminals constitute a water system. The hydraulic module is used to transfer the energy stored in the refrigerant of the outdoor unit to the water, and the water with stored energy is then released into the indoor space through the water terminals. It can be understood that there is a one-to-one correspondence between the M air conditioning terminals and the M water terminals; that is, in the M rooms, each room has one air conditioning terminal and one water terminal installed.

[0027] like Figure 2 As shown, the control method of the heat pump dual-supply system provided in this embodiment of the invention includes the following steps S101 to S103.

[0028] S101: Turn on the outdoor unit and the target air conditioning terminal, where the target air conditioning terminal is at least one of the M air conditioning terminals.

[0029] It should be noted that the target air conditioning terminal is one or more air conditioning terminals that are turned on according to the user's needs from among the M air conditioning terminals connected to the outdoor unit. The target water terminal corresponds one-to-one with the target water terminal. That is to say, the target air conditioning terminal and the target water terminal belong to the N air conditioning terminals and N water terminals located in N rooms out of M rooms, where N is a positive integer not greater than M, such as 1, 2, 3 or 4, etc.

[0030] Understandably, the control device of the heat pump dual-supply system responds to the received start-up command by turning on the outdoor unit and the target air conditioning terminal of the heat pump dual-supply system, so that the outdoor unit and the target air conditioning terminal start running. The outdoor unit runs to cool or heat, and the target air conditioning terminal runs to cool or heat the room. However, since the hydraulic module has not yet been turned on, the target water terminal will not run. That is, in the initial stage, there will be no water system involved in cooling or heating the room.

[0031] In this invention, M air conditioning terminals are connected to the outdoor unit through a first throttling component. In some embodiments, the M air conditioning terminals are connected to the outdoor unit one-to-one through M first throttling components. In other embodiments, the M air conditioning terminals are connected to the outdoor unit through the same first throttling component. The first throttling component can be a thermal expansion valve, a capillary tube, or an electronic expansion valve.

[0032] In some embodiments, activating the target air conditioning terminal includes: opening the first throttling component corresponding to the target air conditioning terminal to a first target opening degree, so that the target air conditioning terminal begins operation. In some embodiments, after activating the target air conditioning terminal, the fan speed of the target air conditioning terminal is also adjusted to the highest fan speed. It is understood that the first target opening degree can be the maximum opening degree of the first throttling component. By opening the first throttling component corresponding to the target air conditioning terminal to the maximum opening degree and / or adjusting the fan speed to the highest fan speed, the indoor temperature can be quickly reached a first set temperature, thereby reducing the operating time of the target air conditioning terminal operating alone for indoor heating or cooling.

[0033] Through the above step S101, in the initial stage after the heat pump dual-supply system is turned on, only the air conditioning terminal is running indoors, and the capacity of the outdoor unit can be fully used to meet the needs of the air conditioning terminal. In the initial stage, the indoor temperature rises rapidly to quickly reach the first set temperature.

[0034] S102: After the outdoor unit and the target air conditioning terminal have been running until the first set condition is met, the hydraulic module is turned on so that the outdoor unit, the target air conditioning terminal, the hydraulic module and the target water terminal can run together. The first set condition indicates that the indoor temperature has reached the first set temperature. The target water terminal is at least one of the N water terminals.

[0035] The hydraulic module and its connected target water terminal are activated by turning on the hydraulic module, enabling the outdoor unit, target air conditioning terminal, hydraulic module, and target water terminal to operate together. In some embodiments, the hydraulic module is connected to the outdoor unit via a second throttling component, while the first throttling component can be a thermostatic expansion valve, a capillary tube, or an electronic expansion valve. The hydraulic module is activated by opening the second throttling component to a second target opening degree.

[0036] The first set condition is that the indoor temperature reaches a first temperature threshold or the continuous operating time of the target air conditioning terminal reaches a first set duration. Therefore, in some embodiments, during the joint operation of the outdoor unit and the target air conditioning terminal, if the indoor temperature reaches the first temperature threshold or the continuous operating time of the target air conditioning terminal reaches the first set duration, it is determined that the first set condition is met, wherein the first temperature threshold is not less than the first set temperature.

[0037] In some implementations, during the simultaneous operation of the outdoor unit and the target air conditioning terminal, it is possible to monitor whether the indoor temperature reaches a first temperature threshold and whether the continuous operating time of the target air conditioning terminal reaches a first preset duration, and the first preset condition is determined to be met when either one is reached. In other implementations, during the simultaneous operation of the outdoor unit and the target air conditioning terminal, it is possible to monitor only whether the indoor temperature reaches the first temperature threshold, and the first preset condition is determined to be met when the indoor temperature reaches the first temperature threshold. In still other implementations, during the simultaneous operation of the outdoor unit and the target air conditioning terminal, it is possible to monitor only whether the continuous operating time of the target air conditioning terminal reaches the first preset duration, and the first preset condition is determined to be met when the continuous operating time of the target air conditioning terminal reaches the first preset duration.

[0038] It is understandable that, in heating mode, the indoor temperature reaching the first temperature threshold means that the indoor temperature rises to a level not lower than the first temperature threshold, while in cooling mode, the indoor temperature reaching the first temperature threshold means that the indoor temperature drops to a level not higher than the first temperature threshold.

[0039] When there are multiple target air conditioning terminals, meaning multiple air conditioning terminals are turned on, there are several ways to achieve the first temperature threshold:

[0040] In some implementations, the indoor temperature is determined to have reached the first temperature threshold if the temperature in the room containing any target air conditioning terminal reaches the first temperature threshold first. The first set temperature is the user-set temperature of the room that first reaches the first temperature threshold. In heating mode, the first temperature threshold is the user-set temperature T of that room. set1 The sum of the first deviation value 'a' and the preset value 'a': T set1 +a, a≥0; Cooling mode, the first temperature threshold is the user-set temperature T of the room.set1 The difference between the first deviation value 'a' and the preset first deviation value 'a': T>T set1 -a, a≥0.

[0041] In other embodiments, the indoor temperature may be determined to have reached a first temperature threshold if the average temperature of the rooms where each target air conditioning terminal is located reaches a first temperature threshold. Here, the first set temperature is the average of the user-set temperatures of the rooms where each target air conditioning terminal is located. In heating mode, the first temperature threshold is the sum of the average user-set temperatures of the rooms where each target air conditioning terminal is located and a preset first deviation value a (a≥0). In cooling mode, the first temperature threshold is the difference between the average user-set temperatures of the rooms where each target air conditioning terminal is located and the preset first deviation value a (a≥0).

[0042] In some other implementations, the target air conditioning terminals are categorized as primary and secondary, with only one primary air conditioning terminal. For example, in an application scenario including a living room and multiple bedrooms, the air conditioning terminal located in the living room and in the on state is the primary air conditioning terminal. When the temperature in the room where the primary air conditioning terminal is located reaches a first temperature threshold, it indicates that the indoor temperature has reached the first temperature threshold. Here, the first set temperature is the user-set temperature of the room where the primary air conditioning terminal is located. In heating mode, the first temperature threshold is the sum of the user-set temperature of the room where the primary air conditioning terminal is located and a preset first deviation value a (a≥0); in cooling mode, the first temperature threshold is the difference between the user-set temperature of the room where the primary air conditioning terminal is located and the preset first deviation value a (a≥0).

[0043] In some implementations, external factors (such as excessively low outdoor temperatures) may cause the indoor temperature to fail to reach the first temperature threshold for an extended period, resulting in the target air conditioning terminal operating at high frequency for an extended period without the hydraulic module being activated, for a first set duration t. set1 The settings can effectively control the duration of operation of the target air conditioning terminal relative to the hydraulic module, thus saving more energy.

[0044] In some implementations, during the joint operation of the outdoor unit, the target air conditioning terminal, the hydraulic module, and the target water terminal, the method further includes: gradually reducing the capacity percentage of the target air conditioning terminal until a second set condition is met. Since the capacities of the air conditioning terminal and the hydraulic module are inversely related, by reducing the capacity percentage of the target air conditioning terminal, the capacity percentage of the hydraulic module will passively increase, thereby gradually raising the outlet water temperature of the hydraulic module.

[0045] The second setting condition is that the outlet water temperature of the hydraulic module reaches a second temperature threshold or the current capacity percentage of the target air conditioning terminal drops below a preset percentage threshold. Therefore, in some embodiments, during the joint operation of the outdoor unit, the target air conditioning terminal, and the target water terminal, if the outlet water temperature of the hydraulic module rises above the second temperature threshold or the current capacity percentage of the target air conditioning terminal drops below the preset percentage threshold, it is determined that the second setting condition is met, wherein the second temperature threshold is not less than the second set temperature.

[0046] Understandably, the second set temperature is the temperature value set by the user for the outlet water temperature of the hydraulic module, such as a value within the range of 40℃ to 50℃. In heating mode, the outlet water temperature of the hydraulic module reaching the second temperature threshold means that the outlet water temperature of the hydraulic module rises to a level not lower than the second temperature threshold. In cooling mode, the outlet water temperature of the hydraulic module reaching the second temperature threshold means that the outlet water temperature of the hydraulic module drops to a level not higher than the second temperature threshold.

[0047] In some implementations, during the simultaneous operation of the outdoor unit, target water terminal, hydraulic module, and target air conditioning terminal, the system monitors whether the outlet water temperature of the hydraulic module reaches a second temperature threshold and whether the current capacity percentage of the target air conditioning terminal drops below a preset percentage threshold. The system determines that the second set condition is met when either of these thresholds is reached first. In other implementations, during the operation of the outdoor unit, target water terminal, hydraulic module, and target air conditioning terminal, the system monitors only whether the outlet water temperature of the hydraulic module reaches the second temperature threshold. The system determines that the second set condition is met when the outlet water temperature of the hydraulic module reaches the second temperature threshold. In still other implementations, during the operation of the outdoor unit, target water module, and target air conditioning terminal, the system monitors only whether the current capacity percentage of the target air conditioning terminal drops below a preset percentage threshold. The system determines that the second set condition is met when the current capacity percentage of the target air conditioning terminal drops below the preset percentage threshold.

[0048] In some implementations, during heating operation, the second temperature threshold is a second set temperature T. set2 The sum of T and the preset second deviation value b set2 +b, b≥0; In cooling mode, the second temperature threshold is the second set temperature T. set2 The difference T between the second deviation value b and the preset value. set2 -b, b≥0.

[0049] In some implementations, during the joint operation of the outdoor unit, the target air conditioning terminal, the hydraulic module, and the target water terminal, the capacity percentage of the target air conditioning terminal is gradually reduced, including: obtaining the desired capacity percentage of the hydraulic module; during the joint operation of the target air conditioning terminal and the target water terminal, obtaining the current capacity percentage of the hydraulic module at a preset cycle, and after each acquisition of the current capacity percentage of the hydraulic module, reducing the capacity percentage of the target air conditioning terminal based on the current capacity percentage of the hydraulic module and the desired capacity percentage of the hydraulic module, until the second preset condition is met.

[0050] In some implementations, obtaining the expected capacity percentage of the hydraulic module includes: obtaining the air conditioning terminal activation rate; determining the expected capacity percentage of the target air conditioning terminal based on the air conditioning terminal activation rate and a second set temperature; and determining the expected capacity percentage of the hydraulic module based on the expected capacity percentage of the target air conditioning terminal.

[0051] It should be noted that the air conditioning terminal activation rate can be the ratio of the rated capacity of the target air conditioning terminal to the rated capacity of the outdoor unit, as shown in the following formula (1):

[0052]

[0053] in, Q represents the air conditioning terminal activation rate. AC,1 Q AC,2 , ...Q AC,n Q represents the rated capacity of the target air conditioning terminals 1 to n. ODU This refers to the rated capacity of the outdoor unit.

[0054] In some implementations, the air conditioning terminal activation rate and the second set temperature are input into a pre-established relational model to calculate the expected capacity ratio of the target air conditioning terminal. The relational model may be a binomial model with two or more iterations.

[0055] Taking the binomial model with two iterations as an example, the calculation of the expected capacity ratio of the target air conditioning terminal is based on the following formula (2):

[0056]

[0057] Where, ε set T represents the expected capacity percentage of the target air conditioning terminal. SW,set The second set temperature is configured by the user. The value represents the air conditioning terminal activation rate, and coefficients a0 to a5 are the built-in parameters of the heat pump dual-supply system.

[0058] The sum of the capacity share of the air conditioning terminal and the capacity share of the hydraulic module is 1. The expected capacity share of the hydraulic module is determined based on the expected capacity share of the target air conditioning terminal, including: based on 1 and the expected capacity share ε of the target air conditioning terminal. set The difference can be used to obtain the expected capacity percentage η of the hydraulic module. set Please refer to the following formula (3):

[0059] η set =1-ε set (3)

[0060] It can be seen that the expected capacity ratio of the hydraulic module and the expected capacity ratio of the target air conditioning terminal depend on the air conditioning terminal's operating rate and the temperature value set for the hydraulic module's outlet water temperature. Therefore, as the capacity ratio of the target air conditioning terminal is gradually reduced, the expected capacity ratio generally remains constant.

[0061] In some implementations, after the hydraulic module is turned on, the current capacity percentage of the hydraulic module can be obtained at a preset cycle. Each time the current capacity percentage of the hydraulic module is obtained, it includes: determining the air conditioning terminal activation rate; and determining the current capacity percentage of the hydraulic module based on the air conditioning terminal activation rate and the current outlet water temperature of the hydraulic module.

[0062] In some implementations, the air conditioning terminal activation rate and the current outlet water temperature of the hydraulic module are input into a pre-established relational model to calculate the current capacity percentage of the target air conditioning terminal, and the current capacity percentage of the hydraulic module is determined based on the current capacity percentage of the target air conditioning terminal.

[0063] Taking the binomial model with two iterations of the relational model as an example, the calculation of the current capacity ratio of the target air conditioning terminal is shown in the following formula (4):

[0064]

[0065] Where ε represents the current capacity percentage of the target air conditioning terminal, and T SW This refers to the current outlet water temperature of the hydraulic module. The value represents the air conditioning terminal activation rate, and coefficients a0 to a5 are the built-in parameters of the heat pump dual-supply system.

[0066] In some implementations, the current capacity percentage of the hydraulic module is determined based on the current capacity percentage of the target air conditioning terminal, including: determining the current capacity percentage η of the hydraulic module η = 1 - ε based on the difference between 1 and the current capacity percentage of the target air conditioning terminal.

[0067] In some implementations, after each acquisition of the current capacity percentage of the hydraulic module, the capacity percentage of the target air conditioning terminal is reduced based on the current capacity percentage of the hydraulic module and the expected capacity percentage of the hydraulic module. This includes: after each acquisition of the current capacity percentage of the hydraulic module, determining the current capacity percentage reduction amount for the target air conditioning terminal based on the current capacity percentage of the hydraulic module and the expected capacity percentage of the hydraulic module; and reducing the capacity percentage of the target air conditioning terminal based on the current capacity percentage reduction amount.

[0068] In some implementations, determining the current capacity percentage reduction for the target air conditioning terminal based on the current capacity percentage and the expected capacity percentage of the hydraulic module includes: determining the current capacity deviation of the hydraulic module based on the current capacity percentage and the expected capacity percentage of the hydraulic module; obtaining the current capacity percentage of the target air conditioning terminal and determining a reference capacity percentage based on the current capacity percentage, the current capacity deviation, and the adjustment duration parameter of the target air conditioning terminal; and determining the current capacity percentage reduction based on the current capacity percentage and the reference capacity percentage of the target air conditioning terminal.

[0069] In some implementations, the current capacity deviation of the hydraulic module is determined based on the current capacity percentage and the expected capacity percentage of the hydraulic module, including: using the difference between the expected capacity percentage and the current capacity percentage of the hydraulic module as the current capacity deviation of the hydraulic module: Δη = η set -η. Of course, after calculating the difference between the expected capacity ratio of the hydraulic module and the current capacity ratio of the hydraulic module, the current capacity deviation of the hydraulic module can be calculated based on this difference and the correction coefficient.

[0070] Understandably, because water has a larger heat capacity than fluoride, the adjustment response of a water system is relatively slow. Therefore, in some implementations, the adjustment time parameter can be a preset duration for eliminating the current capacity deviation. The duration can be set according to actual needs, for example, 5 minutes, 10 minutes, 15 minutes, or 20 minutes, etc. In other implementations, the adjustment time parameter can be a preset number of adjustments for eliminating the current capacity deviation.

[0071] Assume the adjustment time is t. set2 That is, at time t set2 If the current capacity deviation is eliminated internally, the percentage of the target air conditioning terminal's reference capacity used for the current test is:

[0072] ε set =ε-Δη / t set2

[0073] Where, ε setε represents the current reduction in the capacity percentage, ε represents the current capacity percentage of the target air conditioning terminal, and Δη represents the current capacity deviation of the hydraulic module.

[0074] Assuming the number of adjustments is k, meaning the current capacity deviation is eliminated after k adjustments, then the proportion of the target air conditioning terminal's reference capacity used for the current adjustment is:

[0075] ε set =ε-Δη / k

[0076] In some implementations, M air conditioning terminals are connected to the outdoor unit through a first throttling component. After each determination of the capacity percentage reduction amount, the capacity percentage of the target air conditioning terminal is reduced according to the current capacity percentage reduction amount. This includes: determining the amount of reduction in the opening degree of the first throttling component based on the current capacity percentage reduction amount; and reducing the opening degree of the first throttling component based on the amount of reduction in the opening degree, so as to reduce the capacity percentage of the target air conditioning terminal.

[0077] In other implementations, PID (Proportion Integration Differentiation) adjustment is performed based on the current capacity percentage and reference capacity percentage of the target air conditioning terminal to obtain a reduction in the opening of the first throttling component. The opening of the first throttling component is then reduced based on the reduction in the opening, so as to decrease the capacity percentage of the target air conditioning terminal.

[0078] S103: After the outdoor unit, the target air conditioning terminal, the hydraulic module, and the target water terminal operate together until the second set condition is met, the target air conditioning terminal is turned off. The second set condition indicates that the outlet water temperature of the hydraulic module has reached the second set temperature.

[0079] In some implementations, after the second set condition is met, the first throttling component corresponding to each target air conditioning terminal is turned off so that the target air conditioning terminal stops operating, while the remaining outdoor unit, hydraulic module and target water terminal continue to operate, thereby completing the smooth switch from the target air conditioning terminal to the target water terminal. After this, the indoor heating or cooling is provided only by the water system, and each target air conditioning terminal no longer participates in the heating or cooling of the indoor environment, thus achieving comfortable windless heating or cooling.

[0080] To facilitate understanding of the control method for the combined heat pump and cooling system provided in the embodiments of the present invention, the following references are made. Figure 3 Taking a heat pump combined heat and power system used for indoor heating as an example, the control process is illustrated below:

[0081] Step S1: Start the heat pump dual-supply system, turn on the outdoor unit and the target air conditioning terminal, and proceed to step S2;

[0082] Step S2: During the operation of the outdoor unit and the target air conditioning terminal, monitor whether the indoor temperature T1 satisfies T1≥T set1 +a, Does the continuous operating time t of the target air conditioning terminal satisfy t≥t? set1 If any one of the conditions is met first, proceed to step S3;

[0083] Step S3: Turn on the hydraulic module to enable the outdoor unit, the target air conditioning terminal, the hydraulic module, and the target water terminal to operate together;

[0084] Step S4: Determine the expected capacity percentage of the hydraulic module;

[0085] Step S5: During the joint operation of the outdoor unit, the target air conditioning terminal, the hydraulic module, and the target water terminal, obtain the current capacity percentage of the hydraulic module according to a preset cycle;

[0086] Step S6: Based on the current capacity ratio and expected capacity ratio of the hydraulic module, determine the current capacity ratio reduction amount for the target air conditioning terminal;

[0087] Step S7: Based on the current capacity reduction amount for the target air conditioning terminal, reduce the opening of the first throttling component corresponding to the target air conditioning terminal to increase the current capacity ratio of the hydraulic module.

[0088] Step S8: Does the outlet water temperature T2 of the hydraulic module satisfy T2≥T? set2 +b, and whether the current capacity ratio ε of the target air conditioning terminal satisfies ε<c, where c is a preset ratio threshold. If either condition is met, proceed to step S9; otherwise, return to step S4.

[0089] Step S9: Shut down the target air conditioning terminal; the remaining outdoor unit, hydraulic module, and target water terminal continue to operate.

[0090] According to one or more embodiments of the present invention, the hydraulic module can be turned on after the indoor temperature reaches a first set temperature. After the hydraulic module is turned on, the capacity ratio of the target air conditioning terminal is gradually reduced, so that the capacity ratio of the target air conditioning terminal gradually decreases, while the capacity ratio of the hydraulic module passively and gradually increases until a second set condition is met, indicating that the capacity of the water system is sufficient to maintain subsequent indoor heating. Then, the first throttling component corresponding to the target air conditioning terminal is turned off, so that the target air conditioning terminal stops operating, leaving only the outdoor unit, hydraulic module, and target water terminal to continue operating. This completes the smooth switch from the target air conditioning terminal to the target water terminal. This not only avoids the target air conditioning terminal from running for a long time or frequently starting and stopping, but also avoids the operational control difficulties caused by the simple start and stop of the air conditioning terminal and hydraulic module. In addition, it can improve the operational reliability and stability of the heat pump dual-supply system, and can make the room temperature fluctuation smaller during the switching process.

[0091] Based on the same inventive concept, embodiments of the present invention also provide a control device for a combined heat pump and combined heat and power system, such as... Figure 1 As shown, the heat pump dual-supply system includes an outdoor unit, a hydraulic module connected to the outdoor unit, and M air conditioning terminals. The hydraulic module is also connected to M water terminals, where M is a positive integer. Figure 4 As shown, the control device of the heat pump dual-supply system includes: a first activation unit 401, used to activate the outdoor unit and the target air conditioning terminal, wherein the target air conditioning terminal is at least one of M air conditioning terminals; a second activation unit 402, used to activate the hydraulic module after the outdoor unit and the target air conditioning terminal have run to meet a first set condition, so that the outdoor unit, the target air conditioning terminal, the hydraulic module and the target water terminal run together, wherein the first set condition indicates that the indoor temperature has reached a first set temperature and the target water terminal is at least one of M water terminals; and a shutdown unit 403, used to shut down the target air conditioning terminal after the outdoor unit, the target air conditioning terminal, the hydraulic module and the target water terminal have run together to meet a second set condition, wherein the second set condition indicates that the outlet water temperature of the hydraulic module has reached a second set temperature.

[0092] In some embodiments, the control device further includes a capacity reduction unit for gradually reducing the capacity ratio of the target air conditioning terminal during the operation of the outdoor unit, the target air conditioning terminal, and the target water terminal, until a second set condition is met.

[0093] In some implementations, the capacity reduction unit includes: an acquisition subunit for acquiring the desired capacity percentage of the hydraulic module; and a periodic reduction subunit for acquiring the current capacity percentage of the hydraulic module according to a preset period during the joint operation of the target air conditioning terminal and the target water terminal, and after each acquisition of the current capacity percentage of the hydraulic module, reducing the capacity percentage of the target air conditioning terminal according to the current capacity percentage of the hydraulic module and the desired capacity percentage of the hydraulic module, until a second preset condition is met.

[0094] In some implementations, the periodic reduction subunit is used to: after each acquisition of the current capacity percentage of the hydraulic module, determine the current capacity percentage reduction amount for the target air conditioning terminal based on the current capacity percentage of the hydraulic module and the expected capacity percentage of the hydraulic module; and reduce the capacity percentage of the target air conditioning terminal based on the current capacity percentage reduction amount.

[0095] In some implementations, the periodic adjustment subunit is used to: determine the current capacity deviation based on the current capacity percentage of the hydraulic module and the expected capacity percentage of the hydraulic module; obtain the current capacity percentage of the target air conditioning terminal and determine the reference capacity percentage based on the current capacity percentage of the target air conditioning terminal, the current capacity deviation, and a preset adjustment duration parameter; and determine the current capacity percentage reduction amount based on the current capacity percentage of the target air conditioning terminal and the reference capacity percentage.

[0096] In some implementations, M air conditioning terminals are connected to the outdoor unit via a first throttling component, and the hydraulic module is connected to the outdoor unit via a second throttling component; the periodic adjustment subunit is used to: determine the amount of adjustment to the opening of the first throttling component based on the current capacity percentage reduction amount; and adjust the opening of the first throttling component according to the opening reduction amount so as to reduce the capacity percentage of the target air conditioning terminal.

[0097] In some implementations, the periodic adjustment subunit is used to: determine the air conditioning terminal activation rate of the heat pump dual-supply system; and determine the current capacity percentage of the hydraulic module based on the air conditioning terminal activation rate and the current outlet water temperature of the hydraulic module.

[0098] In some embodiments, the control device further includes: a first determining unit, configured to: determine that a first set condition is met if the indoor temperature reaches a first temperature threshold or the continuous operating time of the target air conditioning terminal reaches a first set time during the joint operation of the outdoor unit and the target air conditioning terminal; wherein the first temperature threshold is not less than the first set temperature.

[0099] In some embodiments, the control device further includes a second determining unit, configured to: determine that a second set condition is met if the outlet water temperature of the hydraulic module reaches a second temperature threshold or the current capacity ratio of the target air conditioning terminal drops below a preset ratio threshold during the joint operation of the outdoor unit, the target air conditioning terminal, the hydraulic module, and the target water terminal; wherein the second temperature threshold is not less than the second set temperature.

[0100] Based on the same inventive concept, embodiments of the present invention also provide a combined heat pump and dual power supply system, such as... Figure 1 As shown, this heat pump dual-supply system includes an outdoor unit, a hydraulic module, M air conditioning terminals, and M water terminals. The hydraulic module and the M air conditioning terminals are connected to the outdoor unit; the M water terminals are connected to the hydraulic module, where M is an integer greater than 1. Figure 5 As shown, the combined heat pump system also includes a processor and a memory for storing processor-executable instructions, wherein the processor is configured to execute instructions to implement the control method of the combined heat pump system in any embodiment.

[0101] Among them, Figure 5In this document, a bus architecture (represented by bus 500) is used. Bus 500 may include any number of interconnected buses and bridges, linking various circuits including one or more processors represented by processor 502 and memory represented by memory 504. Bus 500 may also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. Bus interface 505 provides an interface between bus 500 and receiver 501 and transmitter 503. Receiver 501 and transmitter 503 may be the same element, i.e., a transceiver, providing a unit for communicating with various other devices over a transmission medium. Processor 502 is responsible for managing bus 500 and general processing, while memory 504 can be used to store data used by processor 502 during operation.

[0102] Based on the same inventive concept, embodiments of the present invention also provide a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the control method of the heat pump dual-supply system of any of the above embodiments.

[0103] According to one or more embodiments of the present invention, the outdoor unit and the target air conditioning terminal are started first; after the outdoor unit and the target air conditioning terminal have run until the first set condition is met, the hydraulic module is then started. The first set condition indicates that the indoor temperature has reached the first set temperature. In the initial stage after the heat pump dual-supply system is turned on, only the target air conditioning terminal is running indoors, and the capacity of the outdoor unit can be fully used to meet the operation of the target air conditioning terminal, so that the indoor temperature rises rapidly in the initial stage to quickly reach the first set temperature, reducing the running time of the target air conditioning terminal and improving user comfort. After the first set condition is met, the activation of the hydraulic module enables the outdoor unit, the target air conditioning terminal, the hydraulic module, and the target water terminal to operate together. Since the target air conditioning terminal is shut off only after the outdoor unit, the target air conditioning terminal, the hydraulic module, and the target water terminal operate together until the second set condition is met, the second set condition indicates that the outlet water temperature of the hydraulic module has reached the second set temperature. This ensures that the outlet water temperature of the hydraulic module is sufficient to maintain subsequent heating or cooling for the room. Shutting off the target air conditioning terminal under this condition achieves a smooth switch from the target air conditioning terminal to the target water terminal, rather than a direct switch. This avoids the operational control difficulties of a direct switch from the target air conditioning terminal to the target water terminal, thereby improving the operational reliability and stability of the heat pump dual-supply system and reducing room temperature fluctuations during the switch from the target air conditioning terminal to the hydraulic module, thus improving user comfort.

[0104] Furthermore, according to one or more embodiments of the present invention, the heating intelligence level of the combined heat pump system for natural gas and ground water is improved, utilizing the physical laws of the natural gas and ground water system, with good scalability and wide applicability.

[0105] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 Devices that specify the functions in one or more boxes.

[0106] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including an instruction device, which is implemented in a process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0107] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0108] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0109] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

[0110] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A control method for a heat pump dual-supply system, characterized in that, The combined heat pump and cooling system includes an outdoor unit, a hydraulic module connected to the outdoor unit, and M air conditioning terminals. The hydraulic module is also connected to M water terminals, where M is a positive integer. The method includes: Turn on the outdoor unit and the target air conditioning terminal, wherein the target air conditioning terminal belongs to at least one of the M air conditioning terminals; After the outdoor unit and the target air conditioning terminal have been running until the first set condition is met, the hydraulic module is turned on so that the outdoor unit, the target air conditioning terminal, the hydraulic module and the target water terminal run together. The first set condition indicates that the indoor temperature has reached the first set temperature. The target water terminal is at least one of the M water terminals. After the outdoor unit, the target air conditioning terminal, the hydraulic module, and the target water terminal operate together until the second set condition is met, the target air conditioning terminal is turned off. The second set condition indicates that the outlet water temperature of the hydraulic module has reached the second set temperature.

2. The method as described in claim 1, characterized in that, During the joint operation of the outdoor unit, the target air conditioning terminal, and the target water terminal, the capacity ratio of the target air conditioning terminal is gradually reduced until the second set condition is met.

3. The method as described in claim 2, characterized in that, The process of gradually reducing the capacity ratio of the target air conditioning terminal during the joint operation of the outdoor unit, the target air conditioning terminal, and the target water terminal includes: Obtain the expected capacity percentage of the hydraulic module; During the joint operation of the target air conditioning terminal and the target water terminal, the current capacity percentage of the hydraulic module is obtained according to a preset cycle. After each acquisition of the current capacity percentage of the hydraulic module, the capacity percentage of the target air conditioning terminal is reduced according to the current capacity percentage of the hydraulic module and the expected capacity percentage of the hydraulic module, until the second preset condition is met.

4. The method as described in claim 3, characterized in that, The step of adjusting the capacity percentage of the target air conditioning terminal based on the current capacity percentage of the hydraulic module and the expected capacity percentage of the hydraulic module after each acquisition of the current capacity percentage of the hydraulic module includes: After obtaining the current capacity percentage of the hydraulic module each time, the current capacity percentage reduction amount for the target air conditioning terminal is determined based on the current capacity percentage of the hydraulic module and the expected capacity percentage of the hydraulic module. The capacity percentage of the target air conditioning terminal is reduced based on the current capacity percentage reduction amount.

5. The method as described in claim 4, characterized in that, The step of determining the current capacity reduction amount for the target air conditioning terminal based on the current capacity ratio of the hydraulic module and the expected capacity ratio of the hydraulic module includes: The current capacity deviation is determined based on the current capacity percentage of the hydraulic module and the expected capacity percentage of the hydraulic module. Obtain the current capacity percentage of the target air conditioning terminal, and determine the reference capacity percentage based on the current capacity percentage of the target air conditioning terminal, the current capacity deviation, and the preset adjustment duration parameter; The current capacity percentage reduction amount is determined based on the current capacity percentage of the target air conditioning terminal and the reference capacity percentage.

6. The method as described in claim 4, characterized in that, The M air conditioning terminals are connected to the outdoor unit through a first throttling component, and the hydraulic module is connected to the outdoor unit through a second throttling component; The step of reducing the capacity percentage of the target air conditioning terminal based on the current capacity percentage reduction amount includes: The amount of reduction in the opening of the first throttling component is determined based on the current capacity percentage reduction. The opening of the first throttling component is reduced by adjusting the opening amount to decrease the capacity ratio of the target air conditioning terminal.

7. The method as described in claim 3, characterized in that, The step of obtaining the current capacity percentage of the hydraulic module according to a preset period includes: Determine the operating rate of the air conditioning terminals in the heat pump dual-supply system; The current capacity percentage of the hydraulic module is determined based on the air conditioning terminal activation rate and the current outlet water temperature of the hydraulic module.

8. The method according to any one of claims 1-7, characterized in that, Also includes: During the joint operation of the outdoor unit and the target air conditioning terminal, if the indoor temperature reaches a first temperature threshold or the continuous operating time of the target air conditioning terminal reaches a first set time, it is determined that the first set condition is met. Wherein, the first temperature threshold is not less than the first set temperature.

9. The method according to any one of claims 1-7, characterized in that, Also includes: During the joint operation of the outdoor unit, the target air conditioning terminal, the hydraulic module, and the target water terminal, if the outlet water temperature of the hydraulic module reaches the second temperature threshold or the current capacity ratio of the target air conditioning terminal drops below the preset ratio threshold, it is determined that the second set condition is met. Wherein, the second temperature threshold is not less than the second set temperature.

10. A control device for a heat pump dual-supply system, characterized in that, The combined heat pump and cooling system includes an outdoor unit, a hydraulic module connected to the outdoor unit, and M air conditioning terminals. The hydraulic module is also connected to M water terminals, where M is a positive integer. The control device includes: The first activation unit is used to activate the outdoor unit and the target air conditioning terminal, wherein the target air conditioning terminal belongs to at least one of the M air conditioning terminals; The second activation unit is used to activate the hydraulic module after the outdoor unit and the target air conditioning terminal have been running to meet the first set condition, so that the outdoor unit, the target air conditioning terminal, the hydraulic module and the target water terminal run together. The first set condition indicates that the indoor temperature has reached the first set temperature, and the target water terminal belongs to at least one of the M water terminals. The shut-off unit is used to shut off the target air conditioning terminal after the outdoor unit, the target air conditioning terminal, the hydraulic module, and the target water terminal have been operating together until a second set condition is met. The second set condition indicates that the outlet water temperature of the hydraulic module has reached a second set temperature.

11. A heat pump dual-supply system, characterized in that, include: Outdoor unit; A hydraulic module and M air conditioning terminals are connected to the outdoor unit; M water terminals are connected to the hydraulic module, where M is an integer greater than 1; processor; A memory for storing processor-executable instructions, wherein the processor is configured to execute the instructions to implement the control method for a heat pump dual-supply system as described in any one of claims 1 to 9.

12. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by the processor, the program implements the control method of the heat pump dual-supply system as described in any one of claims 1 to 9.

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