Indoor temperature regulation system and control method and control device thereof

Abstract

The embodiment of the present application discloses an indoor temperature regulation system and a control method and device thereof. The control method comprises the following steps: determining a basic temperature of a heat exchange medium in the indoor temperature regulation system for heat exchange with an indoor environment; determining a target temperature of the heat exchange medium according to the basic temperature of the heat exchange medium, a current outdoor environment temperature and / or an indoor environment temperature and / or an indoor set temperature; and at least in the case that the temperature of the heat exchange medium meets a preset temperature condition, if a first optimal capacity of a host of the indoor temperature regulation system corresponding to the target temperature is not less than an indoor load, controlling the host to operate at the first optimal capacity. According to the embodiment of the present application, energy waste can be reduced and energy-saving operation can be realized on the premise of taking into account the comfort of the indoor environment.

Description

TECHNICAL FIELD

[0001] The embodiments of the present application relate to the technical field of temperature regulation equipment, in particular to an indoor temperature regulation system and a control method and a control device thereof. BACKGROUND

[0002] In an indoor temperature control system, only the system parameters of the host side are usually used for independent temperature change or return difference control, but it is found in use that this temperature control method is prone to cause frequent start and stop of the unit, energy waste, or normal start and stop of the host but unreasonable temperature control, resulting in poor user experience or reduced operation efficiency of the host.

[0003] It should be noted that the above introduction to the technical background is only for the convenience of clearly and completely describing the technical solutions of the present application and for the convenience of understanding by those skilled in the art. The above technical solutions cannot be considered as known to those skilled in the art only because they are described in the background section of the present application. SUMMARY

[0004] In view of at least one of the above problems, the embodiments of the present application provide an indoor temperature regulation system and a control method and a control device thereof, which can reduce energy waste and realize energy-saving operation on the premise of considering the comfort of the indoor environment.

[0005] The specific technical solutions of the embodiments of the present application are as follows:

[0006] According to a first aspect of the embodiments of the present application, a control method of an indoor temperature regulation system is provided, wherein the method comprises:

[0007] Step S1: determining a basic temperature of a heat exchange medium in the indoor temperature regulation system for heat exchange with an indoor environment, and determining a target temperature of the heat exchange medium according to the basic temperature of the heat exchange medium, a current outdoor environment temperature and / or an indoor environment temperature and / or an indoor set temperature;

[0008] Step S3: at least in the case that the temperature of the heat exchange medium meets a preset condition, if a first optimal capacity of a host of the indoor temperature regulation system corresponding to the target temperature is not less than an indoor load, controlling the host to operate at the first optimal capacity,

[0009] The preset condition includes that an absolute value of a difference between the temperature of the heat exchange medium and the target temperature is not greater than a preset difference or the temperature of the heat exchange medium reaches the target temperature.

[0010] Further, the method further comprises:

[0011] Step S2: determining a second optimal capacity of the host corresponding to one or more preset temperatures in the process of correcting the base temperature of the heat exchange medium to the target temperature, and controlling the host to operate at the second optimal capacity.

[0012] Further, the step of determining the target temperature of the heat exchange medium in step S1 is performed only when the absolute value of the temperature difference between the indoor set temperature and the current indoor environment temperature is not greater than a first preset temperature difference value after the indoor temperature regulation system is operated, and / or when the indoor load is not greater than a preset load.

[0013] Further, the step of determining the target temperature of the heat exchange medium in step S1 is performed only when the absolute value of the temperature difference between the indoor set temperature and the current indoor environment temperature is not greater than a first preset temperature difference value for the first time after the indoor temperature regulation system is operated, and / or when the indoor load is not greater than a preset load for the first time.

[0014] Further, the step S1 comprises:

[0015] The target temperature of the heat exchange medium is determined according to at least two parameters of the outdoor environment temperature, the temperature difference between the indoor set temperature and the current indoor environment temperature, the first change rate of the indoor environment temperature, the indoor set temperature, the second change rate of the temperature difference between the indoor set temperature and the indoor environment temperature, and the base temperature of the heat exchange medium.

[0016] Further, the target temperature of the heat exchange medium is negatively correlated with the outdoor environment temperature;

[0017] The target temperature of the heat exchange medium is positively correlated with the temperature difference between the indoor set temperature and the current indoor environment temperature;

[0018] The target temperature of the heat exchange medium is negatively correlated with the first change rate;

[0019] The target temperature of the heat exchange medium is positively correlated with the indoor set temperature;

[0020] The target temperature of the heat exchange medium is negatively correlated with the second change rate.

[0021] Further, the step S3 comprises:

[0022] Step S31: determining the first optimal capacity;

[0023] Step S32: determining the indoor load when the temperature of the heat exchange medium reaches the target temperature;

[0024] Step S33: comparing the first optimal capacity determined in step S31 with the indoor load determined in step S32;

[0025] Step S34: controlling the host to operate at the first optimal capacity when the first optimal capacity is not less than the indoor load.

[0026] Further, the step S31 comprises:

[0027] According to a correspondence relationship among the outdoor environment temperature, the temperature of the heat exchange medium and the operating frequency of the host when the host has an optimal energy efficiency ratio, determining a first operating frequency of the host when having an optimal energy efficiency ratio corresponding to the target temperature under an outdoor environment temperature when the temperature of the heat exchange medium meets the preset condition.

[0028] According to the first operating frequency, determining the first optimal capacity of the host.

[0029] Further, the step of determining the second optimal capacity comprises:

[0030] According to a correspondence relationship among the outdoor environment temperature, the temperature of the heat exchange medium and the operating frequency of the host when the host has an optimal energy efficiency ratio, determining a second operating frequency of the host when having an optimal energy efficiency ratio corresponding to the preset temperature under an outdoor environment temperature when the temperature of the heat exchange medium reaches the preset temperature.

[0031] According to the second operating frequency, determining the second optimal capacity of the host.

[0032] Further, the step S3 further comprises: when the first optimal capacity is less than the indoor load, controlling the host to operate at a third operating capacity greater than the first optimal capacity.

[0033] Further, the third operating capacity is an operating capacity not less than the indoor load.

[0034] Further, the step S3 further comprises: when the first optimal capacity is less than the indoor load, making the host operate at a working frequency having an optimal energy efficiency ratio and increasing the flow of the heat exchange medium.

[0035] When the operating capacity under the condition that the flow of the heat exchange medium is increased to the maximum is still less than the indoor load, increasing the operating frequency of the host.

[0036] Further, step S3 further comprises:

[0037] When the first optimal capacity is not less than the indoor load, increasing the back difference of the host under the condition that the host of the temperature adjustment system is controlled to operate at the first optimal capacity.

[0038] Furthermore, step S3 also includes:

[0039] When the first preferred capacity is not less than the indoor load, under the condition that the host is controlled to operate at the first preferred capacity and the preset conditions are met, the hysteresis of the host is increased.

[0040] When the host is operating in heating mode, the preset conditions specifically include:

[0041] The number of times the main unit starts and stops is not less than the first preset number, and / or the temperature of the current heat exchange medium is not less than the first preset temperature, and / or the number of terminals opened is not greater than the first number of openings, and / or the indoor and outdoor temperature difference is not greater than the second preset temperature difference.

[0042] and / or;

[0043] When the host is operating in cooling mode, the preset conditions specifically include:

[0044] The number of times the main unit starts and stops is not less than the second preset number, and / or the current temperature of the heat exchange medium is less than the first preset temperature, and / or the number of terminals opened is not greater than the second number of terminals opened, and / or the indoor and outdoor temperature difference is not greater than the third preset temperature difference.

[0045] Furthermore, the method further includes: if the preset condition is still met after a preset time following the execution of the step of increasing the host's hysteresis, then the host's hysteresis is further increased.

[0046] Furthermore, the temperature of the heat exchange medium includes one or a combination of return water temperature, supply water temperature, evaporation temperature, and condensation temperature; the main unit includes a heat pump; and the preferred capability includes the optimal capability.

[0047] According to a second aspect of the embodiments of this application, a control device for an indoor temperature regulation system is provided, wherein the control device is configured to perform the control method described in the first aspect.

[0048] According to a third aspect of the embodiments of this application, an indoor temperature control system is provided, wherein the indoor temperature control system includes a heat pump, one or more terminals connected to the heat pump via pipelines, and a control device as described in the second aspect that communicates with the heat pump and the terminals.

[0049] Furthermore, the indoor temperature control system also includes a hot water device, which includes a solar hot water device and / or a hydrogen hot water device and / or an electric hot water device and / or a gas hot water device. The hot water device is connected to the pipeline or supplies heat exchange medium to the terminal in parallel with the heat pump.

[0050] Furthermore, the control device communicates with the heat pump, the hot water device, and the terminal via power line carrier communication.

[0051] The beneficial effects of this application embodiment are as follows: the target temperature of the heat exchange medium is determined according to the current outdoor ambient temperature and / or indoor ambient temperature and / or indoor set temperature, and when the temperature of the heat exchange medium meets the preset conditions, and the first optimal capacity of the host of the indoor temperature regulation system corresponding to the target temperature is not less than the indoor load, the host is controlled to operate at the first optimal capacity. Thus, energy waste can be reduced and energy-saving operation can be achieved while taking into account indoor comfort.

[0052] Specific embodiments of this application are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of this application can be adopted. It should be understood that the embodiments of this application are not limited in scope. Within the spirit and scope of the appended claims, embodiments of this application include many changes, modifications, and equivalents. Features described and / or shown for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments. Attached Figure Description

[0053] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this application in any way. Furthermore, the shapes and scales of the components in the drawings are merely illustrative to aid in understanding this application and do not specifically limit the shapes and scales of the components. Those skilled in the art, guided by the teachings of this application, can select various possible shapes and scales to implement this application according to specific circumstances.

[0054] Figure 1 This is a schematic diagram of a control method for an indoor temperature regulation system in one embodiment of this application;

[0055] Figure 2 This is a schematic diagram of step S3 in one embodiment of this application;

[0056] Figure 3 This is a schematic diagram of a control method for an indoor temperature regulation system in one embodiment of this application;

[0057] Figure 4 This is a schematic diagram of the control device configuration in one embodiment of this application;

[0058] Figure 5 This is a schematic diagram of the control device configuration in another embodiment of this application;

[0059] Figure 6This is a schematic diagram of an indoor temperature control system in one embodiment of this application. Detailed Implementation

[0060] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate this application and are not intended to limit the scope of the present invention. After reading this application, any modifications of this application by those skilled in the art in various equivalent forms fall within the scope defined by the appended claims.

[0061] In the embodiments of this application, the terms "first," "second," etc., are used to distinguish different elements by name, but do not indicate the spatial arrangement or chronological order of these elements, and these elements should not be limited by these terms. The term "and / or" includes any one or more of the terms listed in association and all combinations thereof. The terms "comprising," "including," "having," etc., refer to the presence of the stated features, elements, components, or assemblies, but do not exclude the presence or addition of one or more other features, elements, components, or assemblies.

[0062] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0063] This application provides a control method for an indoor temperature regulation system. Figure 1 This is a schematic diagram of the indoor temperature regulation system control method in an embodiment of this application, as shown below. Figure 1 As shown, the control method includes:

[0064] Step S1: Determine the base temperature of the heat exchange medium used for heat exchange with the indoor environment in the indoor temperature control system, and determine the target temperature of the heat exchange medium based on the base temperature of the heat exchange medium, the current outdoor ambient temperature and / or the indoor ambient temperature and / or the indoor set temperature.

[0065] Step S3: At least if the temperature of the heat exchange medium meets the preset conditions, and if the first optimal capacity of the main unit of the indoor temperature control system corresponding to the target temperature is not less than the indoor load, control the main unit to operate at the first optimal capacity.

[0066] The preset conditions include: the absolute value of the difference between the temperature of the heat exchange medium and the target temperature is not greater than a preset difference, or the temperature of the heat exchange medium reaches the target temperature.

[0067] Through the embodiments of this application, the target temperature of the heat exchange medium is determined based on the current outdoor ambient temperature and / or indoor ambient temperature and / or indoor set temperature. When the temperature of the heat exchange medium meets the preset conditions, and the first optimal capacity of the host of the indoor temperature regulation system corresponding to the target temperature is not less than the indoor load, the host is controlled to operate at the first optimal capacity. Thus, energy waste can be reduced and energy-saving operation can be achieved while taking into account indoor comfort.

[0068] The control method of this application embodiment is applied to an indoor temperature regulation system. This system includes a main unit, which may include, but is not limited to, a heat pump. The following description uses a heat pump as an example. The working principle of a heat pump is based on the reverse Carnot principle, transferring heat from a low-temperature object to a high-temperature object through a heat exchange medium, thereby achieving cooling and heating, and thus regulating the indoor temperature. The heat exchange medium can be water, refrigerant, etc. For example, when the heat exchange medium is water, the water can first exchange heat with the refrigerant, and then the water after heat exchange can exchange heat with the indoor air to achieve temperature regulation. When the heat exchange medium is refrigerant, the refrigerant directly exchanges heat with the indoor air to achieve temperature regulation. This application embodiment is not intended to limit the scope of the application. The implementation method of this indoor temperature regulation system will be described later.

[0069] In some embodiments, the temperature of the heat exchange medium includes one or a combination of return water temperature, supply water temperature, evaporation temperature, and condensation temperature. For example, when the heat exchange medium is water, the temperature of the heat exchange medium includes the return water temperature and / or supply water temperature. The return water temperature refers to the water temperature at the main unit's return port, and the outlet water temperature refers to the water temperature at the main unit's outlet. The return water temperature and / or supply water temperature correspond to the evaporation temperature and / or condensation temperature of the refrigerant that exchanges heat with the water. That is, the return water temperature and / or supply water temperature of the heat exchange medium water can be determined based on the evaporation temperature and / or condensation temperature of the refrigerant that first exchanges heat with the water. When the heat exchange medium is refrigerant, the temperature of the heat exchange medium includes the evaporation temperature and / or condensation temperature. This embodiment of the application is not intended to limit the application.

[0070] In some embodiments, in step S1, the base temperature of the heat exchange medium is first determined. This base temperature can be determined based on the outdoor ambient temperature and the temperature difference between the indoor set temperature and the current indoor ambient temperature. The base temperature is negatively correlated with the outdoor ambient temperature and positively correlated with the temperature difference between the indoor set temperature and the current indoor ambient temperature. For example, a pre-set correspondence between the outdoor ambient temperature, the indoor set temperature, and the base temperature can be used. Table 1 is an example of this correspondence, as shown in Table 1:

[0071] Table 1

[0072]

[0073]

[0074] Alternatively, the base temperature can be calculated using a predetermined formula related to the temperature difference between the outdoor ambient temperature, the indoor set temperature, and the current indoor ambient temperature. For example, this predetermined formula can be a linear equation in two variables relating the base temperature to the temperature difference between the outdoor ambient temperature, the indoor set temperature, and the current indoor ambient temperature. It should be noted that, in addition to the aforementioned temperature difference between the outdoor ambient temperature, the indoor set temperature, and the current indoor ambient temperature, the current indoor ambient temperature or other parameters can be considered when determining the base temperature. That is, the correspondence or predetermined formula can also include other parameter items. This application embodiment does not limit this; for example, the predetermined formula and the related parameters of the above correspondence can be personalized according to different regions, the insulation conditions of the user's house type, and the user's heating preferences.

[0075] In some embodiments, when there are multiple rooms in a user's room and each room has a different set indoor temperature, the base temperature can be determined based on the maximum absolute value of the temperature difference between the set indoor temperature and the current indoor ambient temperature in all rooms. Alternatively, the base temperature can be determined by the average value of the temperature differences between multiple set indoor temperatures and the current indoor ambient temperature, but this application is not limited to this.

[0076] In order to enable the temperature of the heat exchange medium to adapt to changes in indoor and outdoor temperatures and achieve energy-saving effects, the temperature of the heat exchange medium can be dynamically adjusted after the indoor temperature control system is in operation. In other words, the base temperature can be corrected. That is, the target temperature of the heat exchange medium is determined based on the base temperature of the heat exchange medium, the current outdoor ambient temperature and / or indoor ambient temperature and / or indoor set temperature.

[0077] In some embodiments, the target temperature of the heat exchange medium can be determined based on at least two parameters selected from the following: outdoor ambient temperature, the temperature difference between the indoor set temperature and the current indoor ambient temperature (a first difference), a first rate of change of the indoor ambient temperature, the indoor set temperature, a second rate of change of the temperature difference between the indoor set temperature and the indoor ambient temperature, and the base temperature of the heat exchange medium. For example, the target temperature can be determined by adjusting the base temperature (increasing or decreasing) based on the above at least two parameters.

[0078] In some embodiments, the target temperature of the heat exchange medium is negatively correlated with the outdoor ambient temperature; the target temperature of the heat exchange medium is positively correlated with the temperature difference between the indoor set temperature and the current indoor ambient temperature; the target temperature of the heat exchange medium is negatively correlated with the first rate of change; the target temperature of the heat exchange medium is positively correlated with the indoor set temperature; and the target temperature of the heat exchange medium is negatively correlated with the second rate of change. These are explained below.

[0079] For example, when determining the target temperature by correcting the base temperature based on the outdoor ambient temperature, the outdoor ambient temperature can be obtained cyclically according to a predetermined first cycle. When the outdoor ambient temperature increases by a first value, a second value is determined to decrease the base temperature. When the outdoor ambient temperature decreases by a first value, a second value is determined to increase the base temperature. The magnitude and relationship of the first and second values, as well as the first cycle, can be predetermined as needed. This application embodiment is not intended to limit the scope of the invention.

[0080] For example, when determining the target temperature by correcting the base temperature based on the indoor set temperature, the indoor set temperature can be obtained cyclically according to a predetermined second cycle. When the indoor set temperature increases by a third value, a fourth value is determined to increase the base temperature; when the indoor set temperature decreases by a third value, a fourth value is determined to decrease the base temperature. The magnitude and relationship of the third and fourth values, as well as the second cycle, can be predetermined as needed, and the embodiments of this application are not intended to limit this.

[0081] For example, when determining the target temperature by correcting the base temperature based on the first difference (indoor set temperature - current indoor ambient temperature = first difference), the first difference can be obtained cyclically according to a predetermined third cycle. When the first difference is greater than the fifth value, it is determined that the base temperature should be increased by a sixth value. The magnitude and relationship of the fifth and sixth values, as well as the third cycle, can be predetermined as needed. This application embodiment is not limited by these.

[0082] For example, the base temperature is corrected according to the aforementioned first or second rate of change. The first rate of change refers to the rate of change of the current indoor ambient temperature relative to the indoor ambient temperature of the previous cycle (fourth cycle), and the second rate of change refers to the rate of change of the current first difference relative to the first difference of the previous cycle (fifth cycle). When determining the target temperature, the first rate of change can be obtained according to a predetermined fourth cycle. When the first rate of change is greater than a seventh value, it is determined that the base temperature should be reduced by an eighth value. The second rate of change can be obtained according to a predetermined fifth cycle. When the second rate of change is greater than a ninth value, it is determined that the base temperature should be reduced by a tenth value. The magnitude and relationship of the seventh and eighth values, the ninth and tenth values, the fourth cycle, and the fifth cycle can be predetermined as needed. This application embodiment is not intended to limit the scope of the invention.

[0083] The above parameters can be implemented individually or in combination to determine the target temperature. When implementing in combination, at least two of the above second, fourth, sixth, eighth, and tenth values ​​can be determined based on the changes of each parameter. At least two of the above second, fourth, sixth, eighth, and tenth values ​​can be combined (for example, taking the maximum or summing them, where the sign of the value representing an increase is positive and the sign of the value representing a decrease is negative) to determine the target temperature. For example, when the indoor set temperature and the outdoor ambient temperature remain constant, the target temperature can be determined based on the first difference and the first rate of change. If the base temperature is increased by 3°C based on the first difference, but decreased by 1°C based on the first rate of change, then the target temperature = base temperature + 3 - 1 = base temperature + 2°C. Alternatively, when only the indoor ambient temperature remains constant, the target temperature can be determined based on the outdoor ambient temperature, the first difference, and the first rate of change. If the base temperature is increased by 1°C based on the outdoor ambient temperature, increased by 3°C based on the first difference, but decreased by 1°C based on the first rate of change, then the target temperature = base temperature + 1 + 3 - 1 = base temperature + 3°C. Examples are not provided here. The above methods for determining the target temperature are applicable to both cooling and heating modes of indoor temperature control systems.

[0084] Similarly, when there are multiple rooms in a user's home, and each room has a different set indoor temperature / ambient temperature, the target temperature can be determined based on the highest set indoor temperature / ambient temperature among all the set indoor temperatures / ambient temperatures. Alternatively, the target temperature can be determined by the average of multiple set indoor temperatures / ambient temperatures; this application is not limited to this. The first cycle described above can be longer than the second, third, fourth, and fifth cycles, which will not be listed here.

[0085] The above explains how to determine the base temperature and target temperature. The following explains when to determine the base temperature and target temperature.

[0086] In some embodiments, when the indoor temperature control system is started, the base temperature of the heat exchange medium can be determined based on the outdoor ambient temperature and the indoor set temperature at startup. That is, when the indoor temperature control system is started, the main unit operates according to this base temperature. After the indoor temperature control system is running, the base temperature is corrected to determine the target temperature only when the absolute value of the temperature difference between the indoor set temperature and the current indoor ambient temperature is not greater than a first preset temperature difference value, and / or when the indoor load is not greater than a preset load. The first preset temperature difference value can be set to be less than a first preset value, for example, 1° or 2°. Optionally, the base temperature can be corrected to determine the target temperature only when the absolute value of the temperature difference between the indoor set temperature and the current indoor ambient temperature is not greater than the first preset temperature difference value for the first time, and / or when the indoor load is not greater than a preset load for the first time. In other words, the base temperature is corrected to determine the target temperature only when the current indoor load is nearly met, or when the indoor set temperature and the current indoor ambient temperature are approximately close, thereby ensuring user comfort while achieving energy savings.

[0087] For example, if the indoor temperature is set to 24°C, the indoor ambient temperature is 30°C when the system starts up, and the base temperature is 15°C, the base temperature of 15°C will be corrected only when the indoor ambient temperature first drops to 24°C, 25°C, or 26°C, thus setting the target temperature to 16°C.

[0088] In the above embodiments, the thermostat installed at the end can report the indoor set temperature and indoor ambient temperature to the control device in real time or at regular intervals, and the temperature sensor (temperature probe) installed outdoors can report the outdoor ambient temperature to the control device in real time or at regular intervals. Alternatively, the control device can also obtain the real-time outdoor ambient temperature of the location through the network and determine the base temperature and target temperature. The control device will be described in the embodiments described later.

[0089] In some embodiments, after determining the target temperature, it is also necessary to determine the operating capacity of the host. The process from the base temperature to the target temperature involves four stages: First, the host operates at the base temperature of the heat exchange medium; second, the host operates at one or more preset temperatures during the process of correcting the base temperature of the heat exchange medium to the target temperature; third, the host operates at a temperature in the heat exchange medium that meets preset conditions, including that the absolute value of the difference between the temperature of the heat exchange medium and the target temperature is not greater than a preset difference (e.g., the temperature of the heat exchange medium has not yet reached the target temperature); fourth, the host operates at a temperature in the heat exchange medium that reaches (or equals) the target temperature. The following explains how the host's operating capacity is determined and adjusted in each of these four stages.

[0090] For the third and fourth stages (step S3)

[0091] In the third and fourth stages, when the temperature of the heat exchange medium approaches or has reached the target temperature (the absolute value of the difference between the temperature of the heat exchange medium and the target temperature is not greater than a preset difference, for example, the preset difference is less than 2°C, which is only an example and not a limitation), if the first optimal capacity of the main unit of the indoor temperature control system corresponding to the target temperature is not less than the indoor load, the main unit is controlled to operate at the first optimal capacity.

[0092] Figure 2 This is a schematic diagram of step S3 in the embodiments of this application, as shown below. Figure 2 As shown, step S3 includes:

[0093] Step S31: Determine the first preferred capability;

[0094] Step S32: Determine the indoor load when the temperature of the heat exchange medium reaches the target temperature;

[0095] Step S33: Compare the first preferred capacity determined in step S31 with the indoor load determined in step S32;

[0096] Step S34: When the first preferred capacity is not less than the indoor load, control the host to operate at the first preferred capacity.

[0097] In some embodiments, in step S31, based on the correspondence between the outdoor ambient temperature, the temperature of the heat exchange medium, and the operating frequency of the host when the host has a better energy efficiency ratio, a first operating frequency of the host when the outdoor ambient temperature meets the preset conditions and the target temperature is determined; and a first optimal capability of the host is determined based on the first operating frequency.

[0098] Table 2 shows an example of the relationship between outdoor ambient temperature, heat exchange medium temperature, and operating frequency when the main unit has a better energy efficiency ratio.

[0099] Table 2

[0100]

[0101] As shown in Table 2, in step S31, when the target temperature is determined to be 40°C, in the third and fourth stages, the optimal energy efficiency ratio (EER) of 2.8-3.0 corresponding to the current (third or fourth stage) outdoor ambient temperature of -5°C and the target temperature of 26°C is determined in the correspondence, and the first operating frequency corresponding to the optimal EER of 2.8-3.0 is determined. Based on the first operating frequency, the first optimal capacity of the host is determined to be 11-12KW (wherein, the optimal EER and optimal capacity are positively correlated at the same operating frequency; for example, the first optimal capacity corresponding to the first operating frequency with an optimal EER of 2.8 is 11KW). Table 2 is only an example, and the embodiments of this application are not intended to limit the scope of the application.

[0102] In some embodiments, the preferred energy efficiency ratio, the first operating frequency, and the first preferred capability may be a single value or a set of multiple values. For example, the preferred energy efficiency ratio (COP) refers to at least one value or at least one range of values ​​between 0.8 times the highest energy efficiency ratio and 1.2 times the highest energy efficiency ratio. An example preferred energy efficiency ratio is equal to the optimal energy efficiency ratio (COP). max (The preferred capability at this time is the optimal capability), and the embodiments of this application are not intended to limit the scope of the application.

[0103] In some embodiments, step S32 determines the indoor load when the temperature of the heat exchange medium reaches the target temperature. This indoor load can be the load of a single indoor area or the total demand load of all indoor areas. During cooling, the load is the heat removed from the room per unit time; during heating, the load is the heat supplied to the room per unit time. Accordingly, the calculation method for heating or cooling load can employ existing methods, which will not be elaborated upon in this embodiment. Alternatively, the temperature differences of each indoor area with heating or cooling needs can be superimposed, and the total demand load can be obtained using the total temperature difference.

[0104] In some embodiments, in steps S33 and S34, the indoor load is compared with a first optimal capacity to determine whether the first optimal capacity can meet the indoor load. If the first optimal capacity is not less than the indoor load, the host is controlled to operate at the first optimal capacity in the third stage and / or the fourth stage. When the first optimal capacity is a range (set), it can be determined whether the minimum value of the first optimal capacity is not less than the indoor load. If the minimum value of the first optimal capacity is not less than the indoor load, the host is controlled to operate at the minimum value of the first optimal capacity in the third stage and / or the fourth stage. Since the host operates at the first optimal capacity, it is in a state of optimal energy efficiency, thereby achieving energy saving while ensuring comfort.

[0105] In some embodiments, such as Figure 2 As shown, step S3 may further include:

[0106] Step S35: When the first preferred capacity is less than the indoor load, control the host to operate at a third operating capacity greater than the first preferred capacity.

[0107] In some embodiments, when the first preferred capacity is less than the indoor load, the main unit is controlled to operate at a third operating capacity. When the first preferred capacity is a range (set), it can be determined whether the maximum value of the first preferred capacity is not less than the indoor load. When the maximum value of the first preferred capacity is less than the indoor load, the main unit is controlled to operate at the third operating capacity. Since if the main unit continues to operate at the first preferred capacity when it is less than the indoor load, it is difficult to meet the cooling or heating load demand. Therefore, the main unit can be controlled to operate at a third operating capacity greater than the first preferred capacity. For example, the third operating capacity is an operating capacity not less than the indoor load. Thus, energy-saving effects are achieved while ensuring comfort.

[0108] In some embodiments, step S35 includes: S351: when the first preferred capacity is less than the indoor load, the host is operated at an operating frequency with a better energy efficiency ratio (e.g., a first operating frequency corresponding to the first preferred capacity), and the flow rate of the heat exchange medium is increased. That is, the operating capacity is improved by increasing the flow rate of the heat exchange medium to operate at a third operating capacity greater than the first preferred capacity; S352: when the operating capacity is still less than the indoor load when the flow rate of the heat exchange medium is increased to the maximum, the operating frequency of the host is increased. That is, when the operating capacity cannot be increased by increasing the flow rate, but the operating capacity still cannot meet the indoor load demand, the operating capacity can be improved by increasing the operating frequency of the host.

[0109] Therefore, in step S35, the host can be controlled to operate at a third operating capacity greater than the first optimal capacity by first increasing the flow rate of the heat exchange medium, and then increasing the host operating frequency when the operating capacity at the maximum flow rate of the heat exchange medium is still less than the indoor load. This allows for increased operating capacity while maintaining high efficiency, and by increasing the flow rate first and then the operating frequency, the operating noise of the indoor temperature control system can be reduced. The above explains how to determine and adjust the host operating capacity in the third and fourth stages under different conditions. In the first and second stages (ignoring changes in outdoor ambient temperature), a first optimal output capacity can be determined in advance. When the first optimal capacity is not less than the indoor load, the host is controlled to operate at the first optimal capacity in the first and second stages. When the first optimal capacity is greater than the indoor load, the host is controlled to operate at a third operating capacity greater than the first optimal capacity in the first and second stages. The specific implementation method is as described above and will not be repeated here. For example, if the base temperature is determined to be 7°C and the target temperature is 9°C in S1, then when the temperature of the heat exchange medium is 7°C, 8°C and 9°C, the operating capacity can be either the first optimal output capacity (the first optimal capacity is not less than the indoor load) or the third operating capacity (the first optimal capacity is less than the indoor load).

[0110] Optionally, to further improve energy efficiency, in the first and second stages, the host can operate with different operating capabilities than in the third and fourth stages. The method also includes:

[0111] Step S2: Determine a second preferred capability of the host corresponding to one or more preset temperatures during the process of correcting the base temperature of the heat exchange medium to the target temperature, and control the host to operate at the second preferred capability.

[0112] In some embodiments, the one or more preset temperatures refer to the temperatures of the heat exchange medium pre-stored in the correspondence shown in Table 2 within the range of [base temperature, target temperature). That is to say, the preset temperature is not less than the base temperature, but less than the target temperature. For example, if the base temperature is 7° and the target temperature is 9°, and Table 2 pre-stores the operating frequencies and optimal capabilities corresponding to the temperatures of the heat exchange medium such as 7°, 8°, and 9°, then the preset temperature may include 8°, or optionally, 7°.

[0113] In some embodiments, in step S2, based on the correspondence between the outdoor ambient temperature, the temperature of the heat exchange medium, and the operating frequency at which the host has a better energy efficiency ratio, a second operating frequency is determined at the outdoor ambient temperature when the temperature of the heat exchange medium reaches the preset temperature, corresponding to the host having a better energy efficiency ratio. Based on the second operating frequency, a second optimal capability of the host is determined, and the host is controlled to operate at the second optimal capability. This correspondence is the same as in Table 2, and will not be repeated here.

[0114] For example, in step S32, when the preset temperature is determined to be 8°, the optimal energy efficiency ratio X1 corresponding to the current (second stage) outdoor ambient temperature of 7° and the preset temperature of 8° is determined in the correspondence, and the second operating frequency corresponding to the optimal energy efficiency ratio X1 is determined. Based on the second operating frequency, the second optimal capability Y1 of the host is determined, and the host is controlled to operate in the second stage with the second optimal capability Y1. X1 and Y1 can be a single value or a set of multiple values.

[0115] For example, in step S32, when the preset temperature is determined to be 7°C (base temperature), the optimal energy efficiency ratio X2 corresponding to the current (first stage) outdoor ambient temperature of 7°C and the preset temperature of 7°C is determined in the correspondence, and the second operating frequency corresponding to the optimal energy efficiency ratio X2 is determined. Based on the second operating frequency, the second optimal capability Y2 of the host is determined, and the host is controlled to operate at the second optimal capability Y2 in the first stage. X2 and Y2 can be a single value or a set of multiple values.

[0116] As can be seen from the above embodiments, when the temperature of the heat exchange medium meets the preset conditions and the first optimal capacity of the main unit of the indoor temperature regulation system corresponding to the target temperature is not less than the indoor load, the main unit is controlled to operate at the first optimal capacity. Thus, energy waste can be reduced and energy-saving operation can be achieved while taking into account indoor comfort.

[0117] In some embodiments, to avoid frequent start-ups and shutdowns of the unit, in step S3 (step S34), when the first preferred capacity is not less than the indoor load, the hysteresis of the main unit controlling the temperature regulation system can be increased while operating at the first preferred capacity. This avoids frequent start-ups and shutdowns of the unit and reduces energy waste while ensuring comfort.

[0118] For example, the hysteresis of the host (also called hysteresis temperature) refers to the temperature difference between the temperature of the heat exchange medium when the host stops running and the temperature of the heat exchange medium when the host restarts. For example, the default value of the hysteresis can be set to Z1° and Z2° (Z1 and Z2 are positive numbers). When the host is working in cooling mode, the host stops running when the temperature of the heat exchange medium is P1°. At this time, the temperature of the heat exchange medium will gradually rise. When it rises to P2°, the host restarts. Z1 = P2 - P1. When the host is working in heating mode, the host stops running when the temperature of the heat exchange medium is P3°. At this time, the temperature of the heat exchange medium will gradually decrease. When it decreases to P4°, the host restarts. Z2 = P3 - P4. In the above, P1, P2, P3, P4, Z1, and Z2 are positive numbers. The values ​​of P1, P2, P3, and P4 can be determined as needed. Z1 and Z2 can be the same or different. This application embodiment does not limit this.

[0119] In some embodiments, increasing the hysteresis of the host machine means increasing Z1 or Z2. For example, when the host machine is operating in cooling mode, increasing the hysteresis means increasing Z1, which can be achieved by increasing P2; when the host machine is operating in heating mode, increasing the hysteresis means increasing Z2, which can be achieved by decreasing P4. This is merely an illustrative example and is not intended to be limiting.

[0120] In some embodiments, when the first preferred capacity is not less than the indoor load, the hysteresis of the host is increased when the host is controlled to operate at the first preferred capacity and the preset conditions are met; that is, it is also necessary to determine whether the preset conditions are met before determining whether to increase the hysteresis of the host.

[0121] In some embodiments, if the preset condition is still met after a preset time following the execution of the step of increasing the host's hysteresis, the host's hysteresis is further (again) increased (by the preset value P). In other words, the value of P can be set to be less than a set value (e.g., P is 0.5 or 1), that is, the hysteresis is gradually increased each time the predetermined condition is met, thereby avoiding frequent start-ups and shutdowns of the unit and reducing energy waste while ensuring comfort.

[0122] In some embodiments, when the host is operating in heating mode, the preset conditions specifically include:

[0123] The preset conditions include: the number of start-stop cycles of the main unit is not less than a first preset number, and / or the current temperature of the heat exchange medium is not less than a first preset temperature, and / or the number of terminal units activated is not greater than a first activation number, and / or the indoor-outdoor temperature difference is not greater than a second preset temperature difference value; when the main unit is operating in cooling mode, the preset conditions specifically include: the number of start-stop cycles of the main unit is not less than a second preset number, and / or the current temperature of the heat exchange medium is less than a first preset temperature, and / or the number of terminal units activated is not greater than a second activation number, and / or the indoor-outdoor temperature difference is not greater than a third preset temperature difference value. In other words, when the main unit is operating at the first optimal capacity, it is also necessary to judge at least one of the following parameters: the number of start-stop cycles of the main unit, the current temperature of the heat exchange medium, the number of terminal units activated, and the indoor-outdoor temperature difference value, to determine whether the preset conditions are met, and to determine whether it is necessary to increase the hysteresis.

[0124] The above P, first preset number of times, first preset temperature, first number of openings, second preset temperature difference value, second preset number of times, first preset temperature, second number of openings, and third preset temperature difference value can be set as needed, and the embodiments of this application are not intended to limit them.

[0125] Figure 3 This is a schematic diagram of a control method in an embodiment of this application, as shown below. Figure 3 As shown, the method includes:

[0126] 301. Set the indoor set temperature, determine the base temperature, and start the indoor temperature control system;

[0127] 302, if the absolute value of the temperature difference between the indoor set temperature and the current indoor ambient temperature is not greater than the first preset temperature difference value for the first time, and / or if the indoor load is not greater than the preset load for the first time, determine the target temperature;

[0128] 303, in the first and second phases, a second preferred capability is determined, and the host is controlled to operate at the second preferred capability;

[0129] 304, determine the best capability in the third and fourth stages;

[0130] 305. Compare whether the first optimal capacity is not less than the indoor load; if the result is yes, proceed to 306-308; if the result is no, proceed to 309-312.

[0131] 306, The control unit operates at its optimal capacity;

[0132] 307. Determine if the preset conditions are met. If they are met, proceed to 308; otherwise, end.

[0133] 308, increases the host's hysteresis, and returns 307;

[0134] 309, to enable the host to operate at a working frequency with a better energy efficiency ratio and to increase the flow rate of the heat exchange medium;

[0135] 310. Determine if the operating capacity is still less than the indoor load. If the result is yes, proceed to 311; otherwise, end.

[0136] 311. Determine if the traffic has increased to the maximum. If the result is yes, execute 312; otherwise, return 309.

[0137] 312, Increase the operating frequency of the host.

[0138] The implementation methods described above for steps 301-312 can be referred to the aforementioned steps S1-S3, and the repeated parts will not be described again.

[0139] It is worth noting that the above appendix Figures 1 to 3 The embodiments described herein are merely illustrative and are not limited thereto. For example, the execution order of various operations can be appropriately adjusted, and additional operations can be added or some operations can be removed. Those skilled in the art can make appropriate modifications based on the above description, and are not limited to the above-described embodiments. Figures 1 to 3 The records.

[0140] As can be seen from the above embodiments, when the temperature of the heat exchange medium meets the preset conditions and the first optimal capacity of the main unit of the indoor temperature control system corresponding to the target temperature is not less than the indoor load, the main unit is controlled to operate at the first optimal capacity. Thus, energy waste can be reduced and energy-saving operation can be achieved while taking into account indoor comfort.

[0141] This application also provides a control device for an indoor temperature regulation system. Figure 4 This is a schematic diagram of the control device configuration of the indoor temperature regulation system in the embodiments of this application, as shown below. Figure 4 As shown, the control device includes:

[0142] The determining unit 401 determines the base temperature of the heat exchange medium used for heat exchange with the indoor environment in the indoor temperature control system, and determines the target temperature of the heat exchange medium based on the base temperature of the heat exchange medium, the current outdoor ambient temperature and / or the indoor ambient temperature and / or the indoor set temperature.

[0143] The control unit 402, at least when the temperature of the heat exchange medium meets preset conditions, controls the main unit of the indoor temperature control system to operate at the first optimal capacity if the first optimal capacity of the main unit corresponding to the target temperature is not less than the indoor load.

[0144] The preset conditions include: the absolute value of the difference between the temperature of the heat exchange medium and the target temperature is not greater than a preset difference, or the temperature of the heat exchange medium reaches the target temperature.

[0145] In some embodiments, the control unit 402 further determines a second preferred capability of the host corresponding to one or more preset temperatures during the process of correcting the base temperature of the heat exchange medium to the target temperature, and controls the host to operate at the second preferred capability.

[0146] In some embodiments, after the indoor temperature control system is running, the determining unit 401 determines the target temperature of the heat exchange medium only when the absolute value of the temperature difference between the indoor set temperature and the current indoor ambient temperature is not greater than a first preset temperature difference value, and / or when the indoor load is not greater than a preset load.

[0147] In some embodiments, after the indoor temperature control system is running, the determining unit 401 determines the target temperature of the heat exchange medium only when the absolute value of the temperature difference between the indoor set temperature and the current indoor ambient temperature is not greater than a first preset temperature difference value for the first time, and / or when the indoor load is not greater than a preset load for the first time.

[0148] In some embodiments, the determining unit 401 determines the target temperature of the heat exchange medium based on at least two parameters selected from the outdoor ambient temperature, the temperature difference between the indoor set temperature and the current indoor ambient temperature, the first rate of change of the indoor ambient temperature, the indoor set temperature, the second rate of change of the temperature difference between the indoor set temperature and the indoor ambient temperature, and the base temperature of the heat exchange medium.

[0149] In some embodiments, the control unit 402 determines the first preferred capacity; determines the indoor load when the temperature of the heat exchange medium reaches the target temperature; compares the determined first preferred capacity with the indoor load determined in step S32; and controls the host to operate at the first preferred capacity when the first preferred capacity is not less than the indoor load.

[0150] In some embodiments, the control unit 402 determines, based on the correspondence between the outdoor ambient temperature, the temperature of the heat exchange medium, and the operating frequency of the host when the host has a better energy efficiency ratio, the first operating frequency of the host when the temperature of the heat exchange medium meets the preset conditions at the outdoor ambient temperature, and the host has a better energy efficiency ratio corresponding to the target temperature; and determines the first optimal capability of the host based on the first operating frequency.

[0151] In some embodiments, the control unit 402 determines, based on the correspondence between the outdoor ambient temperature, the temperature of the heat exchange medium, and the operating frequency at which the host has a better energy efficiency ratio, a second operating frequency at the outdoor ambient temperature when the temperature of the heat exchange medium reaches the preset temperature, and the host having a better energy efficiency ratio; and determines a second better capability of the host based on the second operating frequency.

[0152] In some embodiments, when the first preferred capacity is less than the indoor load, the control unit 402 controls the host to operate at a third operating capacity greater than the first preferred capacity.

[0153] In some embodiments, when the first preferred capacity is less than the indoor load, the control unit 402 causes the host to operate at an operating frequency with a better energy efficiency ratio and increases the flow rate of the heat exchange medium; when the operating capacity is still less than the indoor load even when the flow rate of the heat exchange medium is increased to the maximum, the control unit 402 increases the operating frequency of the host.

[0154] In some embodiments, when the first preferred capacity is not less than the indoor load, the control unit 402 increases the hysteresis of the host unit of the temperature regulation system while controlling the host unit of the temperature regulation system to operate at the first preferred capacity.

[0155] In some embodiments, when the first preferred capacity is not less than the indoor load, the control unit 402 increases the hysteresis of the host when controlling the host to operate at the first preferred capacity and meeting preset conditions.

[0156] This application also provides a control device for an indoor temperature regulation system. Figure 5 This is a schematic diagram of the control device configuration of the indoor temperature regulation system in the embodiments of this application, as shown below. Figure 5 As shown, the control device 500 in this embodiment may include: at least one interface ( Figure 5 (Not shown in the diagram), a processor (e.g., a central processing unit (CPU)) 501, and a memory 502; the memory 502 is coupled to the processor 501. The memory 502 can store various data (e.g., various preset values, thresholds, preset conditions, and correspondences in the aforementioned embodiments); it also stores a program 503, and executes the program 503 under the control of the processor 501.

[0157] In some embodiments, the processor 501 can implement the control method described in the foregoing embodiments. For example, the processor 501 can be configured to: determine the base temperature of a heat exchange medium in an indoor temperature control system for exchanging heat with the indoor environment; determine a target temperature of the heat exchange medium based on the base temperature of the heat exchange medium, the current outdoor ambient temperature and / or the indoor ambient temperature and / or the indoor set temperature; and, at least if the temperature of the heat exchange medium meets a preset temperature condition, if the first preferred capacity of the host of the indoor temperature control system corresponding to the target temperature is not less than the indoor load, control the host to operate at the first preferred capacity, wherein the preset temperature condition includes: the absolute value of the difference between the temperature of the heat exchange medium and the target temperature is not greater than a preset difference or the temperature of the heat exchange medium reaches the target temperature.

[0158] Other implementations of the processor 501 can be found in the foregoing embodiments, and will not be repeated here.

[0159] It is worth noting that the control device 500 may also include a communication module 504, for example, for acquiring indoor ambient temperature, outdoor ambient temperature, indoor set temperature, acquiring parameters such as the temperature and flow rate of the heat exchange medium, and the operating frequency of the host, and for sending control commands to the host, etc., or it may not be necessary to include it. Figure 5 All components shown; in addition, the control device 500 may also include Figure 5 For components not shown in the document, please refer to relevant technologies; they will not be listed here.

[0160] In the embodiments of this application, the processor 501 is sometimes also referred to as a controller, operation control, or central controller, and may include a microprocessor or other processor device and / or logic device. The processor 501 receives input and controls the operation of various components of the control device 500.

[0161] In this embodiment, the memory 502 may be one or more of a cache, flash memory, hard drive, removable medium, volatile memory, non-volatile memory, or other suitable means. It can store various types of information, and also programs for executing that information. The processor 501 can execute the program stored in the memory 502 to perform information storage or processing, etc. The functions of other components are similar to those in existing systems and will not be described further here. The components of the control device 500 can be implemented using dedicated hardware, firmware, software, or a combination thereof, without departing from the scope of this application.

[0162] For example, when the control device is applied to an indoor temperature control system, the processor 501 can be configured separately from the processor (central controller) of the original system. For example, the processor 501 can be configured as a chip connected to the processor (central controller) of the original system, and the two can control each other. Alternatively, the functions of the processor 501 can be integrated into the processor (central controller) of the original system. This application embodiment does not limit this.

[0163] As can be seen from the above embodiments, when the temperature of the heat exchange medium meets the preset conditions and the first optimal capacity of the main unit of the indoor temperature control system corresponding to the target temperature is not less than the indoor load, the main unit is controlled to operate at the first optimal capacity. Thus, energy waste can be reduced and energy-saving operation can be achieved while taking into account indoor comfort.

[0164] This application also provides an indoor temperature control system. Figure 6 This is a schematic diagram of the indoor temperature control system in an embodiment of this application, as shown below. Figure 6 As shown, the indoor temperature control system 600 includes a heat pump 601, one or more terminals 603 connected to the heat pump 601 via pipes, and a control device 602 communicating with the heat pump and the terminals. The implementation of the control device 602 is the same as that of the aforementioned control device 400 or 500, and will not be repeated here.

[0165] In some embodiments, the heat pump 601 (also referred to as a heat pump unit or main unit) includes a compressor for compressing refrigerant and a heat exchange module for heat exchange between the refrigerant and the heat exchange medium. For example, when the heat exchange medium is water, the heat exchange module also has an outlet and a return outlet. The temperature of the heat exchange medium refers to the outlet water temperature and / or the return water temperature. The heat pump can also be equipped with a temperature sensor (e.g., a water temperature sensor) to detect the return water temperature and / or the outlet water temperature. The heat pump has a water pump for driving water flow. The water pump is located on the circulating water path where the outlet and return outlet are located. The control device can control the flow rate of the water pump and can also control the operating frequency, hysteresis, etc. of the compressor so that the heat pump operates according to the set operating capacity. The heat pump and the control device can transmit parameters such as the temperature of the medium, the compressor frequency, and the water pump flow rate to each other. The control device can send control commands as described above to the heat pump. For specific implementations, please refer to the foregoing embodiments.

[0166] In some embodiments, the outlet of the heat exchange module can be connected to an outlet pipe of a cooling or heating terminal 603, such as a fan coil unit, underfloor heating coil, or radiator, and a return pipe of a return outlet connected to the terminal 603. The outlet pipe has an outlet main line and outlet branches connecting each terminal 603; similarly, the return pipe has a return main line and return branches connecting each heat exchange terminal 603. The outlet and return branches form multiple parallel branches connected between the outlet and return main lines. Each parallel branch has one or more terminals 603, and the different terminals 603 are connected in parallel, allowing each terminal 603 to be controlled independently.

[0167] The implementation methods of heat pump units can be referred to the prior art, and the embodiments of this application are not intended to limit them.

[0168] In some embodiments, the indoor temperature control system may further include an outdoor temperature sensor (e.g., a temperature probe) to detect the outdoor ambient temperature. Alternatively, the local real-time outdoor ambient temperature may be acquired via a network. The indoor temperature control system (control device) may have a network module (e.g., a Wi-Fi module or a wired network module) to acquire the outdoor ambient temperature in real time using the Internet.

[0169] In some embodiments, the indoor temperature control system may further include one or more thermostats (not shown) located indoors to acquire the indoor set temperature and the indoor ambient temperature. The thermostats may report the indoor set temperature and the indoor ambient temperature to the control device in real time or at regular intervals.

[0170] In some embodiments, when the control device is applied to an indoor temperature control system, the control device can be configured separately from the heat pump, for example, the control device can be configured as a chip connected to the heat pump, or the function of the control device can be integrated into the heat pump. The embodiments of this application are not intended to limit this.

[0171] In some embodiments, the indoor temperature control system further includes a hot water device 604, which includes a solar hot water device and / or a hydrogen hot water device and / or an electric hot water device and / or a gas hot water device. The hot water device is connected to the pipeline or supplies heat exchange medium to the terminal 603 in parallel with the heat pump 601.

[0172] In some embodiments, the control device 602 communicates with the heat pump 601, the hot water device 604, and the terminal 603 via power line carrier.

[0173] It is worth noting that the indoor temperature control system 600 may also include Figure 6 For components not shown in the document, please refer to relevant technologies; they will not be listed here.

[0174] This application also provides a computer program, wherein when the program is executed in a control device or an indoor temperature control system, the program causes the main controller to perform the control method described in the foregoing embodiments.

[0175] This application also provides a storage medium storing a computer program, wherein the computer program causes a control device or an indoor temperature control system to perform the control method described in the foregoing embodiments.

[0176] The data transmission apparatus described in conjunction with the embodiments of this application can be directly embodied in hardware, software modules executed by a processor, or a combination of both. For example, one or more and / or combinations of one or more functional block diagrams shown in the figures can correspond to either software modules in a computer program flow or hardware modules. These software modules can respectively correspond to... Figures 1 to 3 The steps are shown. These hardware modules can be implemented by embedding these software modules, for example, using a field-programmable gate array (FPGA).

[0177] The software module can reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. A storage medium can be coupled to the processor, enabling the processor to read information from and write information to the storage medium; or the storage medium can be an integral part of the processor. The processor and storage medium can reside in an ASIC. The software module can be stored in the memory of the information processing system or in a memory card that can be inserted into the information processing system.

[0178] One or more of the functional block diagrams and / or combinations thereof described in the figures can be implemented as a general-purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any suitable combination thereof for performing the functions described in this application. One or more of the functional block diagrams and / or combinations thereof described in the figures can also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in communication with a DSP, or any other such configuration.

[0179] The present application has been described above with reference to specific embodiments. However, those skilled in the art should understand that these descriptions are exemplary and not intended to limit the scope of protection of the present application. Those skilled in the art can make various modifications and variations to the present application based on its spirit and principles, and these modifications and variations are also within the scope of the present application.

Claims

1. A control method for an indoor temperature regulation system, characterized in that, The method includes: Step S1: Determine the base temperature of the heat exchange medium used for heat exchange with the indoor environment in the indoor temperature control system, and determine the target temperature of the heat exchange medium based on the base temperature of the heat exchange medium, the current outdoor ambient temperature and / or the indoor ambient temperature and / or the indoor set temperature. Step S3: At least when the temperature of the heat exchange medium meets the preset conditions, if the first optimal capacity of the main unit of the indoor temperature control system corresponding to the target temperature is not less than the indoor load, control the main unit to operate at the first optimal capacity, and increase the hysteresis of the main unit when the predetermined conditions are met; when the first optimal capacity is less than the indoor load, control the main unit to operate at a third operating capacity greater than the first optimal capacity, wherein the third operating capacity is an operating capacity not less than the indoor load. The preset conditions include: the absolute value of the difference between the temperature of the heat exchange medium and the target temperature is not greater than a preset difference or the temperature of the heat exchange medium reaches the target temperature; The step S3 further includes: step S31, determining the first optimal capability of the host, including: determining the first operating frequency of the host with the optimal energy efficiency ratio corresponding to the target temperature at the outdoor ambient temperature when the temperature of the heat exchange medium meets the preset conditions, based on the correspondence between the outdoor ambient temperature, the temperature of the heat exchange medium and the operating frequency of the host when it has the optimal energy efficiency ratio; and determining the first optimal capability of the host based on the first operating frequency.

2. The method according to claim 1, characterized in that, The method further includes: Step S2: Determine a second preferred capability of the host corresponding to one or more preset temperatures during the process of correcting the base temperature of the heat exchange medium to the target temperature, and control the host to operate at the second preferred capability.

3. The method according to claim 1, characterized in that, After the indoor temperature control system is running, the step of determining the target temperature of the heat exchange medium in step S1 is executed only if the absolute value of the temperature difference between the indoor set temperature and the current indoor ambient temperature is not greater than the first preset temperature difference value, and / or if the indoor load is not greater than the preset load.

4. The method according to claim 1, characterized in that, After the indoor temperature control system is running, the step of determining the target temperature of the heat exchange medium in step S1 is executed only if the absolute value of the temperature difference between the indoor set temperature and the current indoor ambient temperature is not greater than the first preset temperature difference value for the first time, and / or if the indoor load is not greater than the preset load for the first time.

5. The method according to claim 1, characterized in that, Step S1 includes: The target temperature of the heat exchange medium is determined based on at least two of the following parameters: outdoor ambient temperature, the temperature difference between the indoor set temperature and the current indoor ambient temperature, the first rate of change of the indoor ambient temperature, the indoor set temperature, the second rate of change of the temperature difference between the indoor set temperature and the indoor ambient temperature, and the base temperature of the heat exchange medium.

6. The method according to claim 5, characterized in that, The target temperature of the heat exchange medium is negatively correlated with the outdoor ambient temperature. The target temperature of the heat exchange medium is positively correlated with the temperature difference between the indoor set temperature and the current indoor ambient temperature; The target temperature of the heat exchange medium is negatively correlated with the first rate of change. The target temperature of the heat exchange medium is positively correlated with the indoor set temperature. The target temperature of the heat exchange medium is negatively correlated with the second rate of change.

7. The method according to claim 1, characterized in that, Step S3 further includes: Step S32: Determine the indoor load when the temperature of the heat exchange medium reaches the target temperature; Step S33: Compare the first preferred capacity determined in step S31 with the indoor load determined in step S32; Step S34: When the first preferred capacity is not less than the indoor load, control the host to operate at the first preferred capacity.

8. The method according to claim 2, characterized in that, The steps for determining the second preferred capability include: Based on the correspondence between outdoor ambient temperature, heat exchange medium temperature and the operating frequency of the host when it has the best energy efficiency ratio, a second operating frequency is determined at the outdoor ambient temperature when the temperature of the heat exchange medium reaches the preset temperature, corresponding to the host having the best energy efficiency ratio. The second preferred capability of the host is determined based on the second operating frequency.

9. The method according to claim 1, characterized in that, Controlling the host to operate at a third operating capacity greater than the first preferred capacity includes: operating the host at an operating frequency with a better energy efficiency ratio and increasing the flow rate of the heat exchange medium; If the operating capacity is still less than the indoor load even when the flow rate of the heat exchange medium is increased to its maximum, the operating frequency of the main unit shall be increased.

10. The method according to claim 1, characterized in that, When the host is operating in heating mode, the predetermined conditions specifically include: The number of times the main unit starts and stops is not less than the first preset number, and / or the temperature of the current heat exchange medium is not less than the first preset temperature, and / or the number of terminals opened is not greater than the first number of openings, and / or the indoor and outdoor temperature difference is not greater than the second preset temperature difference. and / or; When the host is operating in cooling mode, the predetermined conditions specifically include: The number of times the main unit starts and stops is not less than the second preset number, and / or the current temperature of the heat exchange medium is less than the first preset temperature, and / or the number of terminals opened is not greater than the second number of terminals opened, and / or the indoor and outdoor temperature difference is not greater than the third preset temperature difference.

11. The method according to claim 10, characterized in that, The method further includes: if the predetermined condition is still met after a preset time following the execution of the step of increasing the host's backlash, then the host's backlash is further increased.

12. The method according to any one of claims 1 to 10, characterized in that, The temperature of the heat exchange medium includes one or a combination of return water temperature, supply water temperature, evaporation temperature, and condensation temperature; the main unit includes a heat pump; and the preferred capability includes the optimal capability.

13. A control device for an indoor temperature regulation system, characterized in that, The control device is configured to perform the control method according to any one of claims 1 to 12.

14. An indoor temperature control system, characterized in that, The indoor temperature control system includes a heat pump, one or more terminals connected to the heat pump via piping, and a control device as described in claim 13 that communicates with the heat pump and the terminals.

15. The system according to claim 14, characterized in that, The indoor temperature control system also includes a hot water device, which includes a solar hot water device and / or a hydrogen hot water device and / or an electric hot water device and / or a gas hot water device. The hot water device is connected to the pipeline or connected in parallel with the heat pump to supply heat exchange medium to the terminal.

16. The system according to claim 15, characterized in that, The control device communicates with the heat pump, the hot water device, and the terminal via power line carrier.

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