Group control method and equipment for heat pump units and storage medium

Abstract

The invention discloses a group control method and equipment for a heat pump unit and a storage medium. The method comprises the steps that the temperature of water flow in a heat pump is detected; in the temperature control mode, expanding by taking the target temperature as a reference so as to construct a plurality of temperature intervals; according to the energy consumption mode, loading and unloading rules are configured for part of the temperature intervals; and if the temperature of the water flow in the heat pump is in the temperature interval, controlling a host and / or a slave in the heat pump to load or unload a compressor in the heat pump according to a loading and unloading rule so as to adjust the temperature of the water flow according to a temperature control mode. According to the embodiment, a group control mode is provided for units belonging to a single system and multiple systems in the heat pump, proper loading and unloading rules are configured for different temperature intervals, linkage regulation and control of the multiple units are achieved, the temperature of water flow is adjusted smoothly on the whole, the temperature reaching frequency is reduced, the start-stop frequency among the multiple units is reduced, and therefore the overall energy consumption is reduced, and the energy consumption is reduced. The loss of the unit is reduced, and the failure rate is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of heat pumps, and in particular to a group control method, device and storage medium for a heat pump unit. Background Art

[0002] In heat pump units, there are single-system and multi-system units. A single-system unit means there is one compressor in the unit, and a multi-system unit means there are multiple compressors in the unit. Currently, various units are independently controlled, and the situation of reaching the temperature frequently occurs, resulting in frequent start-stop of different units, leading to high overall energy consumption. The frequent start-stop causes large losses to the units, resulting in a high failure rate. Summary of the Invention

[0003] In view of this, the present invention provides a group control method, device and storage medium for a heat pump unit to reduce the frequent start-stop of the heat pump unit, thereby reducing the energy consumption and failure rate of the heat pump.

[0004] The first aspect of the present invention provides a group control method for a heat pump unit. The heat pump unit includes a host and multiple slave units, and each unit includes one or more compressors. The method is applied to the host and includes:

[0005] Detecting the temperature of the water flow in the heat pump; the heat pump has set an energy consumption mode and a temperature control mode; the temperature control mode has a target temperature;

[0006] In the temperature control mode, expanding based on the target temperature to construct multiple temperature intervals;

[0007] Configuring a loading and unloading rule for some of the temperature intervals according to the energy consumption mode;

[0008] If the temperature of the water flow is within the temperature interval, controlling the host and / or the slave units to load or unload the compressor according to the loading and unloading rule to adjust the temperature of the water flow according to the temperature control mode.

[0009] The second aspect of the present invention provides a group control device for a heat pump unit. The heat pump unit includes a host and multiple slave units, and each unit includes one or more compressors. The device is applied to the host and includes:

[0010] A water temperature detection module for detecting the temperature of the water flow in the heat pump; the heat pump has set an energy consumption mode and a temperature control mode; the temperature control mode has a target temperature;

[0011] A temperature interval construction module for expanding based on the target temperature to construct multiple temperature intervals in the temperature control mode;

[0012] A loading and unloading rule configuration module, configured to configure loading and unloading rules for some of the temperature ranges according to the energy consumption mode;

[0013] A compressor loading and unloading module, configured to, if the temperature of the water flow is within the temperature range, control the host and / or the slave to load or unload the compressor according to the loading and unloading rules, so as to adjust the temperature of the water flow according to the temperature control mode.

[0014] A third aspect of the present invention provides a heat pump, the heat pump comprising:

[0015] At least one processor; and

[0016] A memory communicatively connected to the at least one processor; wherein,

[0017] The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor, so that the at least one processor can execute the group control method of the heat pump unit as described in the first aspect above.

[0018] A fourth aspect of the present invention provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, it implements the group control method of the heat pump unit as described in the first aspect above.

[0019] A fifth aspect of the present invention provides a computer program product, the computer program product includes a computer program, and when the computer program is executed by a processor, it implements the group control method of the heat pump unit as described in the first aspect above.

[0020] In this embodiment, the temperature of the water flow in the heat pump is detected; in the temperature control mode, expansion is performed based on the target temperature to construct multiple temperature ranges; loading and unloading rules are configured for some of the temperature ranges according to the energy consumption mode; if the temperature of the water flow in the heat pump is within the temperature range, the host and / or the slave in the heat pump are controlled to load or unload the compressor inside according to the loading and unloading rules, so as to adjust the temperature of the water flow according to the temperature control mode. This embodiment provides a group control mode for the units in the heat pump belonging to single-system and multi-system, configures appropriate loading and unloading rules for different temperature ranges, realizes the linkage control of multiple units, enables the temperature of the water flow to be adjusted smoothly as a whole, reduces the frequency of reaching the temperature, reduces the start-stop frequency between multiple units, thereby reducing the overall energy consumption, and reducing the loss generated to the units and reducing the failure rate.

[0021] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. Description of the Drawings

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0023] Figure 1 It is a flowchart of a group control method for a heat pump unit provided in the first embodiment of the present invention.

[0024] Figure 2 It is a structural diagram of multiple units in a heat pump provided in the first embodiment of the present invention.

[0025] Figure 3 It is a schematic diagram of a temperature range in a heating mode provided in the first embodiment of the present invention.

[0026] Figure 4 It is a schematic diagram of a temperature range in a cooling mode provided in the first embodiment of the present invention.

[0027] Figure 5 It is a structural schematic diagram of a group control device for a heat pump unit provided in the second embodiment of the present invention.

[0028] Figure 6 It is a structural schematic diagram of a heat pump provided in the third embodiment of the present invention. Detailed implementation manners

[0029] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than 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 efforts shall fall within the protection scope of the present invention.

[0030] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above accompanying drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described here can cover sequences other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0031] Embodiment 1

[0032] Refer to Figure 1 , which shows a flowchart of a group control method for a heat pump unit provided in Embodiment 1 of the present invention. This method can be executed by the group control device of the heat pump unit. The group control device of the heat pump unit can be implemented in the form of hardware and / or software, and the group control device of the heat pump unit can be configured in the heat pump.

[0033] In this embodiment, as Figure 2 shown, the unit of the heat pump includes a main unit and multiple slave units. Each unit contains one or more compressors, that is, each unit can be a single system or a multi-system.

[0034] Generally, each unit can be divided into a main unit and a slave unit according to factors such as performance. Parameters such as the identity (main unit and slave unit) and address of each unit have been written into the configuration information of each unit. In the case of a failure of the main unit, the slave unit can be switched to the main unit, and when the main unit recovers, it can be used as a slave unit.

[0035] Each unit is communicatively linked wirelessly or wiredly with other units. The main unit can monitor parameters such as the operating state of the unit, faults, and the running time of the compressor. The main unit can control the slave units, and the units operate according to the instructions of the main unit to perform startup loading or unloading (also known as unloading).

[0036] In this embodiment, the states of each unit and its compressor are normal. The compressor belongs to a variable frequency system, and its frequency (speed) is adjustable.

[0037] The group control modes of multiple units in the heat pump include a standard mode and an energy-saving mode. In addition, other single-unit modes such as an energy-saving mode, a strong mode, and a silent mode are set for a single unit. The group control mode and the single-unit mode do not interfere with each other. The mode of a single unit serves as a limit on the rotational speed frequency in the group control mode, controlling the upper limit value of the frequency of the rotational speed of the compressor. The setting of the single-unit modes of different units can achieve different upper limit values of the rotational speed frequency, and the optimal energy efficiency frequency at different ambient temperatures and water temperatures is customized by setting different upper limit values of the rotational speed frequency.

[0038] As Figure 1 shown, this method can be applied to the main unit and includes:

[0039] Step 101, detect the temperature of the water flow in the heat pump.

[0040] In this embodiment, a temperature sensor can be called in the main pipe of the heat pump to detect the temperature of the water flow in the heat pump in real time, so as to judge the need to load or unload the compressor.

[0041] In the main unit of the heat pump, an energy consumption mode and a temperature control mode are set. Among them, the energy consumption mode includes a fast mode and an energy-saving mode. The speed of adjusting the water temperature in the fast mode is faster than that in the energy-saving mode, and the energy consumption of adjusting the water temperature in the fast mode is higher than that in the energy-saving mode.

[0042] In addition, the temperature control mode includes a heating mode and a cooling mode, and there is a target temperature in the temperature control mode.

[0043] Step 102: In the temperature control mode, expand based on the target temperature to construct multiple temperature intervals.

[0044] On the temperature axis of different temperature control modes, expand forward and / or backward based on the target temperature to construct multiple temperature intervals.

[0045] Among them, the multiple temperature intervals in the heating mode are of the same type as those in the cooling mode, which is convenient for improving the group control efficiency.

[0046] Exemplarily, as Figure 3 shown, if the temperature control mode is the heating mode, the difference between the target temperature T HEST and the preset first deviation value T LD is set as the first node temperature (T HEST -T LD ), the difference between the target temperature T HEST and the preset second deviation value T KLD is set as the second node temperature (T HEST -T KLD ), and the sum value between the target temperature T HEST and the preset third deviation value T ULD is set as the third node temperature (T HEST +T ULD ).

[0047] As Figure 4 shown, if the temperature control mode is the cooling mode, the sum value between the target temperature T HEST and the preset first deviation value T LD is set as the first node temperature (T HEST +T LD ), the sum value between the target temperature T HEST and the preset second deviation value T KLD is set as the second node temperature (T HEST +T KLD ), and the difference between the target temperature T HEST and the preset third deviation value T ULD is set as the third node temperature (T HEST -T ULD ).

[0048] It should be noted that the first deviation value T under the heating mode and the cooling mode LD is greater than the second deviation value T under the heating mode and the cooling mode KLD , and the specific values of the first deviation value T LD , the second deviation value T KLD , and the third deviation value T ULD under the heating mode and the specific values of the first deviation value T LD , the second deviation value T KLD , and the third deviation value T ULD under the cooling mode may be the same or different, and this embodiment does not limit this.

[0049] As Figure 3 shown in Figure 4 , on the temperature axis T, taking the first node temperature, the second node temperature, the target temperature, and the third node temperature as endpoints in sequence, a basic loading area, an energy consumption loading area, a holding area, an unloading area, and an emergency stop area are respectively constructed as temperature intervals.

[0050] Among them, for the heating mode, the basic loading area is (0, T HEST - T LD , the energy consumption loading area is (T HEST - T LD , T HEST - T KLD , the holding area is (T HEST - T KLD , T HEST , the unloading area (T HEST , T HEST + T KLD and the emergency stop area is (T KLD , ∞).

[0051] For the cooling mode, the basic loading area is (0, T HEST + T LD , the energy consumption loading area is (T HEST + T LD , T HEST + T KLD , the holding area is (T HEST + T KLD , T HEST , the unloading area (T HEST , T HEST - T KLD and the emergency stop area is (T KLD , 0).

[0052] Of course, the above temperature ranges and their construction methods are only examples. When implementing this embodiment, other temperature ranges and their construction methods can be set according to actual situations, and this embodiment does not limit this. In addition, in addition to the above temperature ranges and their construction methods, those skilled in the art can also adopt other temperature ranges and their construction methods according to actual needs, and this embodiment does not limit this either.

[0053] Step 103: Configure loading and unloading rules for some temperature ranges according to the energy consumption mode.

[0054] In this embodiment, the loading and unloading rules can be configured for some temperature ranges according to the operating characteristics in the energy consumption mode, where the loading and unloading rules are the rules for loading and unloading compressors.

[0055] Exemplarily, multiple temperature ranges include a basic loading area, an energy consumption loading area, a holding area, an unloading area, and an emergency stop area. The sequence of the basic loading area, the energy consumption loading area, the holding area, the unloading area, and the emergency stop area characterizes the direction of adjusting the temperature in the temperature control mode.

[0056] In the heating mode, the values of the basic loading area, the energy consumption loading area, the holding area, the unloading area, and the emergency stop area increase in sequence.

[0057] In the cooling mode, the values of the basic loading area, the energy consumption loading area, the holding area, the unloading area, and the emergency stop area decrease in sequence.

[0058] Among them, the target temperature is in the holding area; the loading and unloading rules include a loading rule and an unloading rule; the loading rule is used to load the compressor, and the unloading rule is used to unload the compressor.

[0059] In this example, a general loading rule can be configured for the basic loading area. Then, when the temperature of the water flow is in the basic loading area, the host and / or slave can be controlled to load the compressor according to the general loading rule configured for the basic loading area to adjust the temperature of the water flow according to the temperature control mode.

[0060] Configure a loading rule adapted to the energy consumption mode for the energy consumption loading area. Then, when the temperature of the water flow is in the energy consumption loading area, the host and / or slave can be controlled to load the compressor according to the loading rule adapted to the energy consumption mode configured for the energy consumption loading area to adjust the temperature of the water flow according to the temperature control mode.

[0061] Configure an unloading rule adapted to the energy consumption mode for the unloading area. Then, when the temperature of the water flow is in the unloading area, the host and / or slave can be controlled to unload the compressor according to the unloading rule adapted to the energy consumption mode configured for the unloading area to adjust the temperature of the water flow according to the temperature control mode.

[0062] Configure a general unloading rule for the emergency stop area. Then, when the temperature of the water flow is in the emergency stop area, the host and / or slave can be controlled to unload the compressor according to the general unloading rule configured for the emergency stop area, so as to adjust the temperature of the water flow according to the temperature control mode.

[0063] In this way, when far from the target temperature, the compressor is loaded and unloaded with a rough granularity to improve the efficiency of temperature regulation. Near the target temperature, the compressor can be loaded and unloaded with a fine granularity according to the energy consumption mode to improve the accuracy of temperature regulation.

[0064] Step 104: If the temperature of the water flow is in the temperature range, control the host and / or slave to load or unload the compressor according to the loading and unloading rule, so as to adjust the temperature of the water flow according to the temperature control mode.

[0065] In practical applications, the temperature of the water flow can be compared with each temperature range, and the host and / or slave can be controlled to load or unload the compressor according to the loading and unloading rule configured for the temperature range where the water flow temperature is located, so as to adjust (heat or cool) the temperature of the water flow according to the temperature control mode.

[0066] Furthermore, when the temperature of the water flow is in a certain temperature range, the load of each compressor can be measured in ways such as running time and power consumption, and a suitable compressor can be selected according to the load balancing method. Then, the host and / or slave can be controlled to load or unload the selected compressor according to the loading and unloading rule, so as to adjust the temperature of the water flow according to the temperature control mode.

[0067] In an embodiment of the present invention, step 104 may include the following steps:

[0068] Step 1041: If the temperature of the water flow initially is in the basic loading area, generate a target quantity according to the difference between the temperature of the water flow and the target temperature.

[0069] In this embodiment, when the temperature of the water flow initially (i.e., no compressor starts) is in the basic loading area, a target quantity can be generated according to the difference between the temperature of the water flow and the target temperature. Among them, the target quantity, and the difference between the temperature of the water flow and the target temperature are positively correlated. That is, the greater the difference between the temperature of the water flow and the target temperature, the greater the target quantity. On the contrary, the smaller the difference between the temperature of the water flow and the target temperature, the smaller the target quantity.

[0070] In one case, if the unit is powered on and started, and the temperature of the water flow is in the basic loading area, calculate the water temperature deviation value of the interval between the temperature of the water flow and the target temperature.

[0071] Divide the ratio between the water temperature deviation value and the preset temperature coefficient by the total number of compressors to obtain the candidate quantity. Then, the candidate quantity can be expressed as candidate quantity = (target temperature - water flow temperature) / temperature difference coefficient × total number of compressors.

[0072] Take the absolute value and round off the candidate quantity in sequence to obtain the target quantity.

[0073] In this way, when the unit is powered on and started, sufficient compressors are started to increase the intensity of regulating the temperature of the water flow to an appropriate level and improve the efficiency of regulating the temperature of the water flow.

[0074] In another case, if all compressors are closed because the temperature of the water flow is in the emergency stop area and the temperature of the water flow in the heat pump self-adjusts back to the temperature range, then the running duration of the last time the temperature of the water flow is controlled from the basic loading area to the emergency stop area is counted.

[0075] Generate a quantity adjustment coefficient based on the running duration, and update the product (rounded) between the target quantity and the quantity adjustment coefficient to the target quantity.

[0076] Among them, the quantity adjustment coefficient is positively correlated with the running duration, that is, the longer the running duration, the larger the quantity adjustment coefficient; conversely, the shorter the running duration, the smaller the quantity adjustment coefficient.

[0077] The quantity adjustment coefficient is a positive number, that is, the quantity adjustment coefficient can be less than 1, equal to 1, or greater than 1.

[0078] When the running duration is short, the quantity adjustment coefficient is less than 1, reducing the target quantity and energy consumption.

[0079] When the running duration is appropriate, the quantity adjustment coefficient is 1, keeping the target quantity unchanged and the intensity of regulating the temperature unchanged.

[0080] When the running duration is long, the quantity adjustment coefficient is greater than 1, increasing the target quantity and the intensity of regulating the temperature.

[0081] Exemplarily, the duration range configured for the heat pump can be queried, such as [0.5h, 2h], where h is hours.

[0082] If the running duration is less than the lower limit value of the duration range (such as 0.5h), then set the preset first value as the quantity adjustment coefficient; among them, the first value is greater than 0 and less than 1, such as 0.9.

[0083] If the running duration is within the duration range, then set 1 as the quantity adjustment coefficient.

[0084] If the running duration is greater than the upper limit value of the duration range, then set the preset second value as the quantity adjustment coefficient; among them, the second value is greater than 1, such as 1.1.

[0085] Step 1042, control the host and / or slave to start the compressors meeting the target quantity to regulate the temperature of the water flow according to the temperature control mode.

[0086] In this embodiment, the host can select compressors meeting the target quantity according to factors such as load balancing, and notify the host and / or slave machines to which these compressors belong to start these compressors at the upper limit value of the rotational speed, so as to adjust (heat or cool) the temperature of the water flow according to the temperature control mode.

[0087] Step 1043: If starting the compressors is completed, control the host or slave machine to start a compressor of one energy level every preset first time period until all compressors are started up.

[0088] In this embodiment, when starting up compressors meeting the target quantity is completed, the host can select a compressor of one energy level every first time period (also called the energy calculation period) according to factors such as load balancing, and notify the host and / or slave machines to which these compressors belong to start these compressors at the upper limit value of the rotational speed, so as to adjust (heat or cool) the temperature of the water flow according to the temperature control mode. Repeat the operation like this until all compressors are started up. In this way, the intensity of adjusting the temperature of the water flow can be gradually enhanced, making the temperature of the water flow gradually approach the target temperature.

[0089] Among them, a compressor of one energy level takes one compressor as the minimum unit, and it includes one or more compressors.

[0090] Step 1044: If the energy consumption mode is the fast mode and the temperature of the water flow is in the energy consumption loading area, control the host or slave machine to load a compressor of one energy level every preset second time period to adjust the temperature of the water flow according to the temperature control mode until all compressors are started up.

[0091] If the energy consumption mode is the fast mode and the temperature of the water flow is adjusted from the basic loading area to the energy consumption loading area or from the holding area to the energy consumption loading area, the host can select a compressor of one energy level every second time period according to factors such as load balancing, and notify the host and / or slave machines to which these compressors belong to start these compressors at the upper limit value of the rotational speed, so as to adjust (heat or cool) the temperature of the water flow according to the temperature control mode. Repeat the operation like this until all compressors are started up.

[0092] Among them, the second time period is greater than the first time period. For example, when the first time period is the energy calculation period, the second time period = loading period coefficient × energy calculation period, where the loading period coefficient is greater than 1.

[0093] In this way, while maintaining the amplitude of adjusting the compressors each time, the duration of starting the compressors can be increased, the intensity of adjusting the temperature of the water flow can be reduced, and the situation of compressor overload and the temperature of the water flow quickly exceeding the target temperature can be slowed down.

[0094] Step 1045: If the energy consumption mode is the energy-saving mode and the temperature of the water flow is in the energy consumption loading area, then every third preset time period, the host or slave is controlled to increase the rotational speed of the compressor by a preset adjustment unit. When the compressor is fully loaded, the host or slave is controlled to start a compressor of one energy level at the rated rotational speed to adjust the temperature of the water flow according to the temperature control mode until all compressors are started.

[0095] If the energy consumption mode is the energy-saving mode and the temperature of the water flow is adjusted from the basic loading area to the energy consumption loading area or from the holding area to the energy consumption loading area, then the host can select a compressor that is not fully loaded (i.e., the rotational speed has not reached the upper limit value) every third time period based on factors such as load balancing, and notify the host and / or slave to which this compressor belongs to increase the rotational speed by one adjustment unit (such as 5 Hz). When this compressor is fully loaded, select a compressor of one energy level based on factors such as load balancing, and notify the host and / or slave to which these compressors belong to start these compressors at the rated rotational speed (the rated rotational speed is less than the upper limit value of the rotational speed), so as to adjust (heat or cool) the temperature of the water flow according to the temperature control mode. Repeat this operation until all compressors are started.

[0096] Among them, the third time period is less than the first time period. For example, when the first time period is the energy calculation period, the third time period is called the energy-saving loading period, and the energy-saving loading period = energy consumption period coefficient × energy calculation period, where the energy consumption period coefficient is greater than 0 and less than 1, such as 1 / 3.

[0097] In this way, reducing the amplitude of adjusting the compressor each time and increasing the frequency of adjusting the compressor can reduce the energy consumption as a whole, and improve the accuracy of the intensity of adjusting the temperature of the water flow.

[0098] In another embodiment of the present invention, step 104 may include the following steps:

[0099] Step 1046: When the temperature of the water flow is in the holding area, the compressor is kept unchanged to adjust the temperature of the water flow according to the temperature control mode.

[0100] In this embodiment, if the temperature of the water flow is adjusted from the energy consumption loading area to the holding area or from the unloading area to the holding area, the host can keep the existing compressors unchanged, neither load new compressors nor unload the started compressors, and continue to adjust (heat or cool) the temperature of the water flow according to the temperature control mode. In this way, the intervention in the compressor is reduced, and the temperature of the water flow is kept balanced as much as possible.

[0101] Step 1047: If the energy consumption mode is the fast mode and the temperature of the water flow is in the unloading area, then every first preset time period, the host or slave is controlled to turn off a compressor of one energy level to adjust the temperature of the water flow according to the temperature control mode until all compressors are turned off.

[0102] If the energy consumption mode is the fast mode and the temperature of the water flow is adjusted from the holding zone to the unloading zone, the host can select a compressor of one energy level every second time period according to factors such as load balance, notify the host and / or slave to which these compressors belong to turn off these compressors, and continue to adjust the temperature of the water flow (heating or cooling) according to the temperature control mode, so that the temperature of the water flow callbacks to the target temperature with a certain intensity, and repeat the operation until all compressors are turned off.

[0103] Step 1048: If the energy consumption mode is the energy-saving mode and the temperature of the water flow is in the unloading zone, control the speed of the compressor to be lowered by a preset adjustment unit every fourth preset time period. When the speeds of all compressors are lowered to the preset no-load threshold, control the host or slave to turn off a compressor of one energy level every third preset time period to adjust the temperature of the water flow according to the temperature control mode until all compressors are turned off.

[0104] If the energy consumption mode is the energy-saving mode and the temperature of the water flow is adjusted from the holding zone to the unloading zone, the host can select a running compressor every fourth time period according to factors such as load balance, notify the host and / or slave to which this compressor belongs to lower the speed by one adjustment unit (such as 5 Hz). When the speeds of all compressors are lowered to the preset no-load threshold, the host can select a compressor of one energy level every third time period according to factors such as load balance, notify the host and / or slave to which these compressors belong to turn off these compressors, and continue to adjust the temperature of the water flow (heating or cooling) according to the temperature control mode, and repeat the operation until all compressors are turned off.

[0105] Among them, the fourth time period is less than the third time period. For example, when the third time period is the energy-saving loading period, the fourth time period = the energy-saving period coefficient × the energy-saving loading period, where the energy-saving period coefficient is greater than 0 and less than 1, such as 1 / 2.

[0106] In this way, reducing the amplitude of adjusting the compressor each time and increasing the frequency of adjusting the compressor can reduce the energy consumption as a whole, and improve the accuracy of the intensity of adjusting the temperature of the water flow.

[0107] Step 1049: If the temperature of the water flow is in the emergency stop zone, control the host and / or slave to turn off all compressors and shield the energy consumption loading zone.

[0108] In this embodiment, if the temperature of the water flow is adjusted from the unloading zone to the emergency stop zone, the host can control the host and / or slave to turn off all compressors and shield the energy consumption loading zone.

[0109] The so-called shielding means that when the temperature of the water flow is adjusted to the energy consumption loading area, the compressor is not loaded according to the loading rules configured for the energy consumption loading area. In this way, the temperature of the water flow can be adjusted back to the basic loading area, and the compressor can be restarted. During this period, all compressors are shut down and rest for a period of time to reduce the load of the compressors.

[0110] In this embodiment, the temperature of the water flow in the heat pump is detected; in the temperature control mode, it is extended based on the target temperature to construct multiple temperature intervals; unloading rules are configured for some temperature intervals according to the energy consumption mode; if the temperature of the water flow in the heat pump is within the temperature interval, the main unit and / or slave units in the heat pump are controlled to load or unload the compressors inside them according to the unloading rules, so as to adjust the temperature of the water flow according to the temperature control mode. This embodiment provides a group control mode for single-system and multi-system units in the heat pump, configures appropriate unloading rules for different temperature intervals, realizes the linkage control of multiple units, enables the temperature of the water flow to be adjusted smoothly as a whole, reduces the frequency of reaching the temperature, reduces the start-stop frequency between multiple units, thereby reducing the overall energy consumption, and reducing the loss generated to the units and reducing the failure rate.

[0111] Embodiment Two

[0112] See Figure 5 which shows a schematic structural diagram of a group control device for a heat pump unit provided in Embodiment Two of the present invention. As Figure 5 shown, the heat pump unit includes a main unit and multiple slave units, and each unit includes one or more compressors. The device is applied to the main unit and includes:

[0113] A water temperature detection module 501, configured to detect the temperature of the water flow in the heat pump; the heat pump has been set with an energy consumption mode and a temperature control mode; the temperature control mode has a target temperature;

[0114] A temperature interval construction module 502, configured to, in the temperature control mode, extend based on the target temperature to construct multiple temperature intervals;

[0115] An unloading rule configuration module 503, configured to configure unloading rules for some of the temperature intervals according to the energy consumption mode;

[0116] A compressor unloading module 504, configured to, if the temperature of the water flow is within the temperature interval, control the main unit and / or the slave units to load or unload the compressors according to the unloading rules, so as to adjust the temperature of the water flow according to the temperature control mode.

[0117] In an embodiment of the present invention, the temperature interval construction module 502 includes:

[0118] A heating node generation module, configured to, if the temperature control mode is a heating mode, set the difference between the target temperature and a preset first deviation value as the first node temperature, set the difference between the target temperature and a preset second deviation value as the second node temperature, and set the sum value of the target temperature and a preset third deviation value as the third node temperature;

[0119] A refrigeration node generation module, configured to, if the temperature control mode is a refrigeration mode, set the sum value of the target temperature and a preset first deviation value as the first node temperature, set the sum value of the target temperature and a preset second deviation value as the second node temperature, and set the difference between the target temperature and a preset third deviation value as the third node temperature;

[0120] A node division module, configured to sequentially use the first node temperature, the second node temperature, the target temperature, and the third node temperature as endpoints to respectively construct a basic loading area, an energy consumption loading area, a holding area, an unloading area, and an emergency stop area as temperature intervals;

[0121] Wherein, the first deviation value is greater than the second deviation value.

[0122] In an embodiment of the present invention, the multiple temperature intervals include a basic loading area, an energy consumption loading area, a holding area, an unloading area, and an emergency stop area; the target temperature is in the holding area; the compressor loading and unloading rules include a loading rule and an unloading rule; the loading rule is used to load the compressor, and the unloading rule is used to unload the compressor;

[0123] The compressor loading and unloading rule configuration module 503 includes:

[0124] A first loading rule configuration module, configured to configure a general loading rule for the basic loading area;

[0125] A second loading rule configuration module, configured to configure a loading rule adapted to the energy consumption mode for the energy consumption loading area;

[0126] A first unloading rule configuration module, configured to configure an unloading rule adapted to the energy consumption mode for the unloading area;

[0127] A second unloading rule configuration module, configured to configure a general unloading rule for the emergency stop area.

[0128] In an embodiment of the present invention, the compressor loading and unloading module 504 includes:

[0129] A target quantity generation module, configured to generate a target quantity according to the difference between the temperature of the water flow and the target temperature if the initial temperature of the water flow is in the base loading zone; the target quantity is positively correlated with the difference between the temperature of the water flow and the target temperature.

[0130] A first compressor loading module, configured to control the host and / or the slave to start the compressors meeting the target quantity, so as to adjust the temperature of the water flow according to the temperature control mode.

[0131] A second compressor loading module, configured to, if starting the compressors is completed, control the host or the slave to start one energy level of the compressors every preset first time period until all the compressors are started.

[0132] A third compressor loading module, configured to, if the energy consumption mode is the fast mode and the temperature of the water flow is in the energy consumption loading zone, control the host or the slave to load one energy level of the compressors every preset second time period to adjust the temperature of the water flow according to the temperature control mode until all the compressors are started; the second time period is greater than the first time period.

[0133] A fourth compressor loading module, configured to, if the energy consumption mode is the energy saving mode and the temperature of the water flow is in the energy consumption loading zone, control the host or the slave to increase the rotation speed of the compressors by a preset adjustment unit every preset third time period, and when the compressors are fully loaded, control the host or the slave to start one energy level of the compressors at the rated rotation speed to adjust the temperature of the water flow according to the temperature control mode until all the compressors are started; the third time period is less than the first time period.

[0134] In an embodiment of the present invention, the target quantity generation module includes:

[0135] A water temperature deviation value calculation module, configured to calculate the water temperature deviation value between the temperature of the water flow and the target temperature if the unit is powered on and started and the temperature of the water flow is in the base loading zone.

[0136] A candidate quantity calculation module, configured to divide the ratio of the water temperature deviation value to a preset temperature coefficient by the total number of the compressors to obtain a candidate quantity.

[0137] A candidate quantity regularization module, configured to take the absolute value and the integer of the candidate quantity in sequence to obtain a target quantity.

[0138] An operation duration statistics module, configured to, if all the compressors are turned off because the temperature of the water flow is in the emergency stop area and the temperature of the water flow in the heat pump is in the temperature range, statistics the operation duration of the last time the temperature of the water flow is controlled from the basic loading area to the emergency stop area;

[0139] An adjustment coefficient generation module, configured to generate a quantity adjustment coefficient according to the operation duration; the quantity adjustment coefficient is positively correlated with the operation duration;

[0140] A target quantity update module, configured to update the product between the target quantity and the quantity adjustment coefficient to the target quantity.

[0141] In an embodiment of the present invention, the adjustment coefficient generation module includes:

[0142] A duration range query module, configured to query the duration range configured for the heat pump;

[0143] A first setting module, configured to, if the operation duration is less than the lower limit value of the duration range, set a preset first value as the quantity adjustment coefficient; the first value is greater than 0 and less than 1;

[0144] A second setting module, configured to, if the operation duration is within the duration range, set 1 as the quantity adjustment coefficient;

[0145] A third setting module, configured to, if the operation duration is greater than the upper limit value of the duration range, set a preset second value as the quantity adjustment coefficient; the second value is greater than 1.

[0146] In an embodiment of the present invention, the compressor loading and unloading module 504 includes:

[0147] A compressor holding module, configured to, when the temperature of the water flow is in the holding area, keep the compressor unchanged to adjust the temperature of the water flow according to the temperature control mode;

[0148] A first compressor unloading module, configured to, if the energy consumption mode is the fast mode and the temperature of the water flow is in the unloading area, control the host or the slave to turn off one energy level of the compressor every preset first time period to adjust the temperature of the water flow according to the temperature control mode until all the compressors are turned off;

[0149] The second compressor unloading module is configured to, if the energy consumption mode is the energy-saving mode and the temperature of the water flow is within the unloading zone, control the rotational speed of the compressor to be decreased by a preset adjustment unit every preset fourth time period. When the rotational speeds of all the compressors are decreased to a preset no-load threshold, control the host or the slave to turn off one energy level of the compressor every preset third time period, so as to adjust the temperature of the water flow according to the temperature control mode until all the compressors are turned off; the fourth time period is less than the third time period;

[0150] The third compressor unloading module is configured to, if the temperature of the water flow is within the emergency stop zone, control the host and / or the slave to turn off all the compressors, and shield the energy consumption loading zone.

[0151] In an embodiment of the present invention, the compressor loading and unloading module 504 includes:

[0152] A compressor selection module, configured to select the compressor in a load balancing manner when the temperature of the water flow is within the temperature range;

[0153] A load balancing module, configured to control the host and / or the slave to load or unload the selected compressor according to the loading and unloading rule, so as to adjust the temperature of the water flow according to the temperature control mode.

[0154] The group control device of the heat pump unit provided by the embodiment of the present invention can execute the group control method of the heat pump unit provided by any embodiment of the present invention, and has corresponding function modules and beneficial effects for executing the group control method of the heat pump unit.

[0155] Embodiment III

[0156] See Figure 6 , which shows a schematic structural diagram of a heat pump provided by an embodiment of the present invention. The heat pump is intended to represent various forms of digital computers, such as, a laptop computer, a desktop computer, a workbench, a personal digital assistant, a blade server, a mainframe computer, and other suitable computers. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or claimed herein.

[0157] As Figure 6As shown, the heat pump 10 includes at least one processor 11 and a memory communicatively connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc. The memory stores a computer program executable by the at least one processor. The processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 into the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the heat pump 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0158] Multiple components in the heat pump 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a magnetic disk, an optical disc, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the heat pump 10 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunication networks.

[0159] The processor 11 can be various general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the processor 11 include but are not limited to a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as the group control method of the heat pump unit.

[0160] In some embodiments, the group control method of the heat pump unit can be implemented as a computer program tangibly embodied in a computer-readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed onto the heat pump 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the group control method of the heat pump unit described above can be executed. Alternatively, in other embodiments, the processor 11 can be configured to execute the group control method of the heat pump unit by any other appropriate means (e.g., by means of firmware).

[0161] The various embodiments of the systems and techniques described above in this specification can be implemented in digital electronic circuitry, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems-on-chip (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include: being implemented in one or more computer programs that are executable and / or interpretable on a programmable system including at least one programmable processor, which can be a special-purpose or general-purpose programmable processor that receives data and instructions from, and transmits data and instructions to, a storage system, at least one input device, and at least one output device.

[0162] The computer program for implementing the methods of the present invention can be written in any combination of one or more programming languages. These computer programs can be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions / operations specified in the flowchart and / or block diagram to be implemented. The computer program can be executed entirely on the machine, partly on the machine, as a stand-alone software package partly on the machine and partly on a remote machine or entirely on the remote machine or server.

[0163] In the context of the present invention, a computer-readable storage medium can be a tangible medium that can contain or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer-readable storage medium can include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, the computer-readable storage medium can be a machine-readable signal medium. More specific examples of the machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0164] To provide interaction with a user, the systems and techniques described herein can be implemented on a heat pump that has: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or a trackball) by which the user can provide input to the heat pump. Other kinds of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, speech input, or tactile input).

[0165] The systems and techniques described herein can be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer having a graphical user interface or a web browser through which the user can interact with an implementation of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system can be interconnected to each other by digital data communication in any form or medium (e.g., a communication network). Examples of communication networks include: local area network (LAN), wide area network (WAN), blockchain network, and the Internet.

[0166] A computing system can include a client and a server. The client and the server are generally remote from each other and typically interact through a communication network. The relationship between the client and the server is created by computer programs that run on the respective computers and have a client - server relationship with each other. The server can be a cloud server, also known as a cloud computing server or a cloud host, which is a host product in the cloud computing service system and solves the defects of difficult management and weak business scalability existing in traditional physical hosts and VPS services.

[0167] Embodiment 4

[0168] The embodiment of the present invention also provides a computer program product, which includes a computer program that, when executed by a processor, implements the group control method of a heat pump unit as provided in any embodiment of the present invention.

[0169] In the process of implementing the computer program product, computer program code for performing the operations of the present invention can be written in one or more programming languages or combinations thereof. The programming languages include object-oriented programming languages such as Java, Smalltalk, C++, and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, executed as an independent software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network - including a local area network (LAN) or a wide area network (WAN) - or, alternatively, can be connected to an external computer (e.g., by using an Internet service provider to connect through the Internet).

[0170] It should be understood that the various forms of the flow shown above can be used, steps can be reordered, added or deleted. For example, the steps recited in the present invention can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved, and no limitation is imposed herein.

[0171] The above specific embodiments do not constitute a limitation on the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and factors such as load balancing. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A group control method for a heat pump unit, characterized in that: The heat pump unit includes a host and multiple slaves, each of which includes one or more compressors. The method is applied to the host, including: Detecting the temperature of the water flow in the heat pump; the heat pump has been set with an energy consumption mode and a temperature control mode; the temperature control mode has a target temperature; In the temperature control mode, expansion is performed based on the target temperature to construct multiple temperature intervals; configuring loading and unloading rules for some of the temperature intervals according to the energy consumption mode; If the temperature of the water flow is within the temperature range, the host and / or the slave are controlled to load or unload the compressor according to the loading and unloading rules, so as to adjust the temperature of the water flow according to the temperature control mode.

2. The method according to claim 1, characterized in that In the temperature control mode, the target temperature is used as a reference for expansion to construct multiple temperature ranges, including: If the temperature control mode is a heating mode, the difference between the target temperature and a preset first deviation value is set as the first node temperature, the difference between the target temperature and a preset second deviation value is set as the second node temperature, and the sum of the target temperature and a preset third deviation value is set as the third node temperature; If the temperature control mode is a cooling mode, the sum of the target temperature and a preset first deviation value is set as the first node temperature, the sum of the target temperature and a preset second deviation value is set as the second node temperature, and the difference between the target temperature and a preset third deviation value is set as the third node temperature; Sequentially taking the first node temperature, the second node temperature, the target temperature, and the third node temperature as endpoints, respectively constructing a basic loading area, an energy consumption loading area, a holding area, an unloading area, and an emergency stop area as temperature intervals; Wherein, the first deviation value is greater than the second deviation value.

3. The method according to claim 1, characterized in that The multiple temperature intervals include a basic loading area, an energy consumption loading area, a holding area, an unloading area and an emergency stop area; the target temperature is in the holding area; the loading and unloading rules include a loading rule and an unloading rule; the loading rule is used to load the compressor, and the unloading rule is used to unload the compressor; The configuring of loading and unloading rules for part of the temperature intervals according to the energy consumption mode includes: Configuring a general loading rule for the basic loading area; Configuring a loading rule adapted to the energy consumption mode for the energy consumption loading area; configuring an unloading rule adapted to the energy consumption mode for the unloading area; A general unloading rule is configured for the emergency stop area.

4. The method according to claim 3, characterized in that If the temperature of the water flow is within the temperature range, controlling the host and / or the slave to load or unload the compressor according to the loading and unloading rule to adjust the temperature of the water flow according to the temperature control mode includes: If the temperature of the water flow is initially in the basic loading zone, generating a target quantity according to the difference between the temperature of the water flow and the target temperature; the target quantity and the difference between the temperature of the water flow and the target temperature are positively correlated; Controlling the host and / or the slave to start the compressors that meet the target number, so as to adjust the temperature of the water flow according to the temperature control mode; If the compressor is started, the master or slave is controlled to start a compressor of one energy level at every preset first time period until all the compressors are started; If the energy consumption mode is the fast mode and the temperature of the water flow is in the energy consumption loading zone, the host or the slave is controlled to load the compressor of one energy level at every preset second time period to adjust the temperature of the water flow according to the temperature control mode until all the compressors are started; the second time period is greater than the first time period; If the energy consumption mode is the energy-saving mode and the temperature of the water flow is in the energy consumption loading area, the host or the slave is controlled to increase the speed of the compressor by a preset adjustment unit at every preset third time period. When the compressor is fully loaded, the host or the slave is controlled to start the compressor of an energy level at a rated speed to adjust the temperature of the water flow according to the temperature control mode until all the compressors are started; the third time period is less than the first time period.

5. The method according to claim 4, characterized in that If the temperature of the water flow is initially in the basic loading area, generating a target quantity according to a difference between the temperature of the water flow and the target temperature includes: If the unit is powered on and started, and the temperature of the water flow is in the basic loading area, then calculating the water temperature deviation value between the temperature of the water flow and the target temperature; Dividing the ratio between the water temperature deviation value and the preset temperature coefficient by the total number of the compressors to obtain a candidate number; Taking the absolute value and integer of the candidate quantity in turn to obtain the target quantity; If all the compressors are shut down because the temperature of the water flow is in the emergency stop zone, and the temperature of the water flow in the heat pump is in the temperature range, then the running time of the last time the temperature of the water flow was controlled from the basic loading zone to the emergency stop zone is counted; generating a quantity adjustment coefficient according to the running time; the quantity adjustment coefficient is positively correlated with the running time; The product of the target quantity and the quantity adjustment coefficient is updated to the target quantity.

6. The method according to claim 5, characterized in that The generating of the quantity adjustment coefficient according to the running time includes: Querying the time range configured for the heat pump; If the running time is less than the lower limit of the time range, a preset first value is set as the quantity adjustment coefficient; the first value is greater than 0 and less than 1; If the running time is within the time range, 1 is set as the quantity adjustment coefficient; If the running time is greater than the upper limit of the time range, a preset second value is set as the quantity adjustment coefficient; the second value is greater than 1.

7. The method according to claim 3, characterized in that If the temperature of the water flow is within the temperature range, controlling the host and / or the slave to load or unload the compressor according to the loading and unloading rule to adjust the temperature of the water flow according to the temperature control mode includes: When the temperature of the water flow is in the holding zone, the compressor is kept unchanged to adjust the temperature of the water flow according to the temperature control mode; If the energy consumption mode is the fast mode and the temperature of the water flow is in the unloading zone, the master or slave is controlled to shut down a compressor of one energy level at every preset first time period to adjust the temperature of the water flow according to the temperature control mode until all the compressors are shut down; If the energy consumption mode is the energy-saving mode, and the temperature of the water flow is in the unloading zone, the speed of the compressor is controlled to be reduced by a preset adjustment unit at each preset fourth time period, and when the speeds of all the compressors are reduced to a preset no-load threshold, the host or the slave is controlled to shut down a compressor of an energy level at each preset third time period to adjust the temperature of the water flow according to the temperature control mode until all the compressors are completely shut down; the fourth time period is less than the third time period; If the temperature of the water flow is in the emergency stop zone, the host machine and / or the slave machine are controlled to shut down all the compressors, and shield the energy consumption loading zone.

8. The method according to any one of claims 1 to 7, characterized in that When the temperature of the water flow is within the temperature range, loading or unloading the compressor in the host and / or the slave is controlled according to the loading and unloading rules to adjust the temperature of the water flow according to the temperature control mode, including: When the temperature of the water flow is within the temperature range, selecting the compressor in a load balancing manner; The host and / or the slave are controlled to load or unload the selected compressor according to the loading and unloading rules, so as to adjust the temperature of the water flow according to the temperature control mode.

9. A heat pump, characterized in that: The heat pump comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the group control method of the heat pump unit according to any one of claims 1 to 8.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the group control method of the heat pump unit according to any one of claims 1 to 8 is implemented.

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