A control method and device, air conditioning equipment and storage medium
Patent Information
- Application Number
- CN202211171185.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-09-23
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2042-09-23
Smart Images
Figure CN117804034B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of air conditioning control technology, and in particular to a control method, device, air conditioning equipment and storage medium. Background Technology
[0002] With the rapid development of science and technology, air conditioning equipment has become increasingly sophisticated and widely used. When an air conditioner is in heating mode, the outdoor ambient temperature is usually low. At this time, the fins of the outdoor unit are prone to frost formation. Once frost forms on the outdoor unit fins, heat exchange becomes difficult, and the frost layer quickly spreads across the entire fin, causing liquid to be drawn into the air, thus reducing the indoor air conditioning capacity. Currently, the common method for defrosting the outdoor unit fins is to switch the air conditioner from heating mode to cooling mode.
[0003] However, during the use of air conditioning equipment, the outdoor unit fins are usually switched from heating mode to cooling mode to defrost them only when they are already frosted. This process is prone to incomplete defrosting, which may lead to ice formation on the outdoor unit fins. During the heating process, the indoor temperature fluctuates greatly due to the long-term switching between cooling and defrosting modes, resulting in lower heating efficiency of the air conditioning equipment.
[0004] Application content
[0005] To address the aforementioned technical problems, this application aims to provide a control method, device, air conditioning equipment, and storage medium. This solves the problem that current air conditioning equipment requires prolonged switching to cooling mode for defrosting during heating mode, leading to significant changes in indoor ambient temperature. The application proposes a method to pre-control the air conditioning equipment to prevent frost buildup on the outdoor unit fins, reducing the likelihood of frost formation on the outdoor unit fins, ensuring a more stable indoor ambient temperature, and guaranteeing the heating efficiency of the air conditioning equipment.
[0006] The technical solution of this application is implemented as follows:
[0007] Firstly, a control method, the method comprising:
[0008] When the air conditioning equipment is in heating mode, the parameter values of the target operating parameters of the outdoor unit of the air conditioning equipment are obtained according to a preset sampling interval;
[0009] Based on the parameter values of the target operating parameters, the frosting state of the outdoor unit fins of the air conditioning equipment is determined;
[0010] If the frosting state indicates a tendency to frost, control the outdoor unit to switch to the shutdown state;
[0011] The conduction state of the target four-way valve connected to the energy storage module of the air conditioning equipment is switched to the cooling conduction state, so that the air conditioning equipment enters the self-defrosting state for the outdoor unit fins.
[0012] In a second aspect, a control device includes: an acquisition unit, a first determination unit, and a control unit; wherein:
[0013] The acquisition unit is used to acquire the parameter values of the target operating parameters of the outdoor unit of the air conditioning equipment according to a preset sampling interval when the air conditioning equipment is in heating mode.
[0014] The first determining unit is used to determine the frosting state of the outdoor unit fins of the air conditioning equipment based on the parameter values of the target operating parameters;
[0015] The control unit is used to control the outdoor unit to switch to a shutdown state if the frosting state is a state with a tendency to frost.
[0016] The control unit is also used to control the switching of the conduction state of the target four-way valve connected to the energy storage module of the air conditioning equipment to the cooling conduction state, so that the air conditioning equipment enters the self-defrosting state for the outdoor unit fins.
[0017] Thirdly, an air conditioning device, the device comprising: an indoor unit, an outdoor unit, an energy storage module, and a control device as described above.
[0018] Fourthly, a storage medium, characterized in that the storage medium stores a control program, which, when executed by a processor, implements the steps of the control method as described in any of the preceding claims.
[0019] In this embodiment, when the air conditioning equipment is in heating mode, the parameter values of the target operating parameters of the outdoor unit of the air conditioning equipment are obtained according to a preset sampling interval. Based on the parameter values of the target operating parameters, the frosting state of the outdoor unit fins of the air conditioning equipment is determined. If the frosting state is a state with a frosting trend, the outdoor unit is controlled to switch to the shutdown state, and the conduction state of the target four-way valve connected to the energy storage module of the air conditioning equipment is controlled to switch to the cooling conduction state, so that the air conditioning equipment enters the self-defrosting state for the outdoor unit fins. In this way, when the air conditioning equipment is in heating mode and it is determined that the outdoor unit fins are showing signs of frost formation, the outdoor unit is switched to a shutdown state, and the conduction device of the target four-way valve is switched to the cooling conduction state. This allows the outdoor unit fins to be heated to prevent frost formation. This solves the problem that current air conditioning equipment needs to switch to cooling mode for a long time to defrost during heating mode, resulting in large changes in indoor ambient temperature. This method proposes a pre-controlled method to prevent frost formation on the outdoor unit fins, reducing the possibility of frost formation on the outdoor unit fins, making the indoor ambient temperature relatively stable, and ensuring the heating efficiency of the air conditioning equipment. Attached Figure Description
[0020] Figure 1 Flowchart of the control method provided in the embodiments of this application Figure 1 ;
[0021] Figure 2 Flowchart of the control method provided in the embodiments of this application Figure 2 ;
[0022] Figure 3 Flowchart of the control method provided in the embodiments of this application Figure 3 ;
[0023] Figure 4 This is a schematic diagram of the structure of an air conditioning device provided in an embodiment of this application;
[0024] Figure 5 A schematic diagram illustrating the implementation flow of an application embodiment of the control method provided in this application;
[0025] Figure 6 A schematic diagram of refrigerant flow in heating mode for an air conditioning device provided in this application embodiment;
[0026] Figure 7 A schematic diagram of refrigerant flow in self-defrosting mode for an air conditioning device provided in this application embodiment;
[0027] Figure 8 Flowchart of the control method provided in the embodiments of this application Figure 4 ;
[0028] Figure 9 Flowchart of the control method provided in the embodiments of this application Figure 5 ;
[0029] Figure 10 Flowchart of the control method provided in the embodiments of this application Figure 6 ;
[0030] Figure 11 This is a schematic diagram of another air conditioning device provided in an embodiment of this application;
[0031] Figure 12 A schematic diagram illustrating the implementation flow of another control method provided in this application embodiment;
[0032] Figure 13 A schematic diagram of refrigerant flow in heating mode for another air conditioning device provided in this application embodiment;
[0033] Figure 14 A schematic diagram of refrigerant flow in self-defrosting mode for another air conditioning device provided in this application embodiment;
[0034] Figure 15 Flowchart of the control method provided in the embodiments of this application Figure 7 ;
[0035] Figure 16 Flowchart of the control method provided in the embodiments of this application Figure 8 ;
[0036] Figure 17 This is a schematic diagram of the structure of a control device provided in an embodiment of this application;
[0037] Figure 18 This is a schematic diagram of the structure of another air conditioning device provided in an embodiment of this application. Detailed Implementation
[0038] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.
[0039] The embodiments of this application provide a control method, referring to Figure 1 As shown, the method is applied to air conditioning equipment, and the method includes the following steps:
[0040] Step 101: When the air conditioning equipment is in heating mode, obtain the target operating parameters of the outdoor unit of the air conditioning equipment according to the preset sampling interval.
[0041] In this embodiment, the air conditioning device can be an air conditioning device with an energy storage module, such as a hot water system or other energy storage module. The preset sampling interval can be an empirical value obtained from a large number of experiments, or it can be an empirical value set by the user according to actual needs. The target operating parameters can be the real-time operating parameters of the components in the outdoor unit.
[0042] Step 102: Based on the parameter values of the target operating parameters, determine the frosting status of the outdoor unit fins of the air conditioning equipment.
[0043] In this embodiment, the parameter values of the target operating parameters of the outdoor unit are analyzed to determine the frosting state of the outdoor unit fins of the air conditioning equipment. Generally, the frosting state can be divided into three states: no frosting, a tendency to frost, and already frosted. The tendency to frost is a state where frosting is about to occur but has not yet occurred.
[0044] Step 103: If the frosting state is a state with a tendency to frost, control the outdoor unit to switch to the shutdown state.
[0045] In this embodiment, when the frosting state is determined to be a state with a tendency to frost, the outdoor unit is controlled to switch to a shutdown state. When the outdoor unit switches to the shutdown state, the fan in the outdoor unit stops working, and the refrigerant flow in the outdoor unit also stops. At this time, after the outdoor unit switches to the shutdown state, the refrigerant only circulates within the indoor unit, and the energy storage module operates in a low-pressure state.
[0046] Step 104: Switch the conduction state of the target four-way valve connected to the energy storage module of the air conditioning equipment to the refrigeration conduction state.
[0047] Specifically, the conduction state of the target four-way valve connected to the energy storage module of the air conditioning equipment is switched to the cooling conduction state, so that the air conditioning equipment enters the self-defrosting state for the outdoor unit fins.
[0048] In this embodiment, step 103 can also be executed after step 104, and steps 103 and 104 can be executed simultaneously, depending on the actual situation. The target four-way valve is used to control the flow of heat in the energy storage module. After the target four-way valve switches to the cooling-on state, the energy storage module operates in a low-pressure state, allowing heat to be transferred to the outdoor unit fins on the heat exchanger, which can heat the outdoor unit fins and thus destroy the conditions for frost formation on the outdoor unit fins. In this way, when the outdoor unit fins are detected to have a tendency to frost, heat is pre-transferred to the outdoor unit fins for heating, thus destroying the conditions for frost formation on the outdoor unit fins and reducing the possibility of frost formation on the outdoor unit fins. This eliminates the need for a long defrosting operation on the outdoor unit fins, and the outdoor unit does not need to be shut down for a long time during this process, effectively ensuring that the indoor unit of the air conditioning equipment regulates the indoor ambient temperature, resulting in smaller fluctuations in the indoor ambient temperature and improving the user experience.
[0049] In this embodiment, when the air conditioning equipment is in heating mode, the parameter values of the target operating parameters of the outdoor unit of the air conditioning equipment are obtained according to a preset sampling interval. Based on the parameter values of the target operating parameters, the frosting state of the outdoor unit fins of the air conditioning equipment is determined. If the frosting state is a state with a frosting trend, the outdoor unit is controlled to switch to the shutdown state, and the conduction state of the target four-way valve connected to the energy storage module of the air conditioning equipment is controlled to switch to the cooling conduction state, so that the air conditioning equipment enters the self-defrosting state for the outdoor unit fins. In this way, when the air conditioning equipment is in heating mode and it is determined that the outdoor unit fins are showing signs of frost formation, the outdoor unit is switched to a shutdown state, and the conduction device of the target four-way valve is switched to the cooling conduction state. This allows the outdoor unit fins to be heated to prevent frost formation. This solves the problem that current air conditioning equipment needs to switch to cooling mode for a long time to defrost during heating mode, resulting in large changes in indoor ambient temperature. This method proposes a pre-controlled method to prevent frost formation on the outdoor unit fins, reducing the possibility of frost formation on the outdoor unit fins, making the indoor ambient temperature relatively stable, and ensuring the heating efficiency of the air conditioning equipment.
[0050] Based on the foregoing embodiments, embodiments of this application provide a control method applied to an air conditioning device. When the energy storage module is a heat storage module where the material undergoes a phase change, refer to... Figure 2 As shown, the method includes the following steps:
[0051] Step 201: When the air conditioning equipment is in heating mode, detect the heat storage temperature of the heat storage module.
[0052] In this embodiment, when the air conditioning equipment includes a heat storage module that undergoes material transformation, the air conditioning equipment detects the heat storage temperature of the heat storage module after switching to heating mode. The air conditioning equipment can obtain the heat storage temperature of the heat storage module through a temperature detection device, such as a temperature sensor, installed on the heat storage module. Communication between the air conditioning equipment and the temperature detection device can be achieved through wired or wireless communication.
[0053] Step 202: If the heat storage temperature is greater than or equal to the first temperature threshold, obtain the parameter values of the target working parameters according to the preset sampling interval.
[0054] In this embodiment, the first temperature threshold can be an empirical temperature value obtained from numerous experiments, or it can be an empirical temperature value set by the user according to their needs. When the heat storage temperature of the heat storage module is detected to be greater than or equal to the first temperature threshold, the parameter values of the target operating parameters of the outdoor unit are periodically collected according to a predetermined preset sampling interval.
[0055] Step 203: Based on the parameter values of the target operating parameters, determine the frosting status of the outdoor unit fins of the air conditioning equipment.
[0056] In this embodiment of the application, the changes in the parameter values of the target operating parameters of the outdoor unit are analyzed to determine the frosting state of the outdoor unit fins.
[0057] Step 204: If the frosting state is a state with a tendency to frost, control the outdoor unit to switch to the shutdown state.
[0058] In this embodiment of the application, when it is determined that the frost state of the outdoor unit fins is about to frost, the fan of the outdoor unit is stopped, and the refrigerant in the outdoor unit no longer flows. That is, the switching valve of the outdoor unit used to control the flow of refrigerant, such as the electronic expansion valve of the outdoor unit, is closed.
[0059] Step 205: Switch the conduction state of the target four-way valve connected to the energy storage module of the air conditioning equipment to the refrigeration conduction state.
[0060] Specifically, the conduction state of the target four-way valve connected to the energy storage module of the air conditioning equipment is switched to the cooling conduction state, so that the air conditioning equipment enters the self-defrosting state for the outdoor unit fins.
[0061] In this embodiment of the application, after the outdoor unit is switched to the shutdown state, the conduction state of the target four-way valve also needs to be switched so that the heat stored in the energy storage module flows through the target four-way valve to the outdoor unit fins to heat the outdoor unit fins, thereby preventing the outdoor unit fins from frosting.
[0062] Based on the foregoing embodiments, in other embodiments of this application, step 203 may be comprised of steps 203a to 203d:
[0063] Step 203a: Determine the first set of working parameter values, the second set of working parameter values, and the third set of working parameter values.
[0064] The target working parameters include at least one working parameter. The first set of working parameter values is the parameter value of the target working parameter collected at the current sampling time. The second set of working parameter values is the parameter value of the target working parameter collected at the previous sampling time adjacent to the current sampling time. The third set of working parameter values is the parameter value of the target working parameter collected at the previous sampling time adjacent to the previous sampling time.
[0065] In this embodiment, taking the current sampling time as time t, the previous sampling time adjacent to the current sampling time as time t-1, and the sampling time immediately preceding the previous sampling time as time t-2 as an example, the method involves obtaining the first set of working parameter values corresponding to time t, the second set of working parameter values corresponding to time t-1, and the third set of working parameter values corresponding to time t-2 from the parameter values of the target working parameters. It should be noted that the number of elements included in the first, second, and third sets of working parameter values is the same as the number of working parameters included in the target working parameters, and the elements included in the first, second, and third sets of working parameter values correspond one-to-one with the working parameters included in the target working parameters.
[0066] For example, assuming the target operating parameters include three operating parameters A, B and C of the outdoor unit, the corresponding first set of operating parameters can be denoted as (A1, B1, C1), the second set of operating parameter values can be denoted as (A2, B2, C2), and the third set of operating parameters can be denoted as (A3, B3, C3).
[0067] Step 203b: Determine the difference between the elements in the third set of working parameter values and the corresponding elements in the second set of working parameter values to obtain the first set of differences.
[0068] In this embodiment of the application, the first set of differences can be denoted as (A3-A2, B3-B2, C3-C2).
[0069] Step 203c: Determine the difference between the elements in the second set of working parameter values and the corresponding elements in the first set of working parameter values to obtain the second set of differences.
[0070] In this embodiment of the application, the second difference set can be denoted as (A2-A1, B2-B1, C2-C1).
[0071] Step 203d: If all elements in the first difference set are greater than the first preset threshold corresponding to each element, and all elements in the second difference set are greater than the first preset threshold corresponding to each element, then the frosting state is determined to be a state with a frosting trend.
[0072] In this embodiment of the application, the first preset threshold corresponding to each element is an empirical value obtained from a large number of experiments, or it can be an empirical value set by the user according to actual needs.
[0073] For example, taking the first preset threshold corresponding to working parameter A as ΔA, the first preset threshold corresponding to working parameter B as ΔB, and the first preset threshold corresponding to working parameter C as ΔC as an example, if it is determined that A3-A2>ΔA, B3-B2>ΔB and C3-C2>ΔC, and A2-A1>ΔA, B2-B1>ΔB and C2-C1>ΔC, that is, each working parameter in the target working parameters decreases twice consecutively, and the range of change exceeds the corresponding first preset threshold, it can be determined that the outdoor unit fins have a frosting trend.
[0074] Based on the foregoing embodiments, in other embodiments of this application, step 203 can also be implemented by steps 203e to 203f:
[0075] Step 203e: Obtain the current set of target working parameter values collected at the current sampling time from the target working parameter values.
[0076] The target operating parameters include at least one operating parameter.
[0077] In this embodiment, the number of parameters included in the current parameter value set is the same as the number of working parameters included in the target working parameters. For example, when the target working parameters include two working parameters D and E, the current parameter value set can be denoted as (D1, E1).
[0078] Step 203f: If all elements in the current parameter value set are less than the second preset threshold corresponding to each element, determine that the frosting state is a state with a frosting trend.
[0079] In this embodiment, the second preset threshold corresponding to each element can be an empirical value corresponding to the target operating parameters obtained from a large number of experiments, which may lead to frost formation on the outdoor unit fins. Taking the second preset threshold corresponding to operating parameter D as ΔD and the second preset threshold corresponding to operating parameter E as ΔE as an example, if D1 < ΔD and E1 < ΔE, the frost formation state of the outdoor unit fins is determined to be a state with a tendency to frost, that is, if the outdoor unit fins are not treated, the outdoor unit fins are very likely to frost.
[0080] Based on the foregoing embodiments, in other embodiments of this application, the target operating parameters include the operating current parameters or operating power parameters of the outdoor motor of the air conditioning equipment, and the low-pressure parameters of the refrigerant in the outdoor unit or the fin temperature parameters of the outdoor unit fins.
[0081] In this embodiment, the target operating parameters may include: the operating current parameters of the outdoor motor of the air conditioning equipment and the low-pressure parameters of the refrigerant in the outdoor unit; or the operating current parameters of the outdoor motor of the air conditioning equipment and the fin temperature parameters of the outdoor unit fins; or the operating power parameters of the outdoor motor and the low-pressure parameters of the refrigerant in the outdoor unit; or the operating power parameters of the outdoor motor and the fin temperature parameters of the outdoor unit fins. The fin temperature parameters of the outdoor unit fins can be detected by setting a defrost temperature sensor on the outdoor unit fins.
[0082] Based on the foregoing embodiments, in other embodiments of this application, reference is made to... Figure 3 As shown, after the air conditioning equipment performs step 205, it is also used to perform steps 206 to 207:
[0083] Step 206: After the air conditioning unit enters the self-defrosting state for the second preset time, control the outdoor unit to switch to the heating state.
[0084] In this embodiment, the second preset duration is the heating experience duration required to heat the outdoor unit fins to prevent frost formation when they are about to frost, based on extensive experiments. In some application scenarios, it can also be an empirical value set by the user based on experience. The second preset duration is usually short. Within the second preset duration after the outdoor unit stops working, the indoor unit continues to operate. During this process, the indoor unit regulates the indoor ambient temperature, keeping it within a certain temperature range without significant fluctuations. This means the user will not feel a noticeable drop in temperature, ensuring a good user experience. After the outdoor unit of the air conditioning equipment stops working and the target four-way valve switches to the cooling conduction mode, the outdoor unit fins have been heated and frost formation will not occur. Therefore, the outdoor unit is switched to the heating mode, i.e., the outdoor unit fan is turned on, and the refrigerant in the outdoor unit is circulated again, realizing the circulation of refrigerant between the indoor and outdoor units, thus achieving the heating process of the air conditioning equipment and allowing the outdoor unit to regulate the indoor ambient temperature. When controlling the refrigerant to circulate again in the outdoor unit, the on / off valve in the outdoor unit, such as the outdoor unit's electronic expansion valve, can be opened to a preset opening degree.
[0085] Step 207: Switch the conduction state of the target four-way valve to the heating conduction state.
[0086] In this embodiment of the application, the conduction state of the target four-way valve is switched to the heating conduction state.
[0087] Based on the foregoing embodiments, this application provides a structural schematic diagram of an air conditioning device, referring to... Figure 4 As shown, it includes: compressor A11, a first four-way valve A12 in the indoor unit, a second four-way valve A13 in the heat storage device, a third four-way valve A14 in the outdoor unit controlling the refrigerant flow, an outdoor heat exchanger A15, an outdoor motor A16, an outdoor electronic expansion valve A17, an indoor unit electronic expansion valve A18, an indoor unit A19, a heat storage device electronic expansion valve A20, and a heat storage device A21. The second four-way valve corresponds to the aforementioned target four-way valve. Correspondingly, for... Figure 4 The implementation process of a control method for preventing frost buildup on the outdoor unit fins, as shown in the air conditioning equipment, can be referred to... Figure 5 As shown, it includes the following steps:
[0088] Step a11: The air conditioning equipment is switched to heating mode and the heat storage device begins to store heat.
[0089] Step a12: After the air conditioning equipment detects that the heat storage device has reached the preset temperature, it detects the current value of the outdoor motor and the low pressure value of the refrigerant.
[0090] Step a13: If the current value is lower than the current threshold and the low pressure value is lower than the low pressure threshold, or if the air conditioning equipment determines that the current value and the low pressure value have decreased twice consecutively in the two moments adjacent to the current sampling time, and the current value decrease is greater than the current decrease threshold and the low pressure value decrease is greater than the low pressure decrease threshold each time, it is determined that the outdoor unit fins have a tendency to frost.
[0091] Step a14: Switch the second four-way valve of the air conditioning unit to the cooling conduction mode, close the outdoor electronic expansion valve, and control the outdoor motor of the outdoor fan to not run.
[0092] When the air conditioning unit switches the second four-way valve to the cooling conduction mode, the heat storage device becomes low pressure to provide the evaporation side for the indoor unit; the outdoor unit fins are deactivated and enter a self-defrosting state.
[0093] Correspondingly, Figure 4 When the air conditioning unit is in heating mode, the refrigerant flow direction can be referred to... Figure 6As shown, when the air conditioner switches to heating mode and hot water mode, in heating mode, the refrigerant flow is as follows: compressor A11 - first four-way valve A12 - indoor unit A19 - indoor unit electronic expansion valve A18 - outdoor electronic expansion valve A17 - outdoor heat exchanger A15 - third four-way valve A14 - compressor A11. In hot water mode, the refrigerant flow is as follows: compressor A11 - second four-way valve A13 - heat storage device A21 - heat storage device electronic expansion valve A20 - outdoor electronic expansion valve A17 - outdoor heat exchanger A15 - third four-way valve A14 - compressor A11. After the air conditioner switches the second four-way valve to cooling mode, closes the outdoor electronic expansion valve, and stops the outdoor fan motor from running, the corresponding refrigerant flow can be referenced... Figure 7 As shown, the corresponding refrigerant flow direction is: compressor A11 - first four-way valve A12 - indoor unit A19 - indoor unit electronic expansion valve A18 - heat storage device electronic expansion valve A20 - heat storage device A21 - second four-way valve A13 - compressor A11.
[0094] Step a15: 5 minutes after the air conditioning unit switches to self-defrosting mode, control the second four-way valve to switch back to heating mode, control the outdoor electronic expansion valve to open to the initial opening degree, and control the outdoor motor of the outdoor fan to work according to the control logic of heating mode.
[0095] The heat storage device can remain off or on.
[0096] It should be noted that the descriptions of the same steps and contents as in other embodiments in this embodiment can be found in the descriptions in other embodiments, and will not be repeated here.
[0097] In this embodiment, when the air conditioning equipment is in heating mode, the parameter values of the target operating parameters of the outdoor unit of the air conditioning equipment are obtained according to a preset sampling interval. Based on the parameter values of the target operating parameters, the frosting state of the outdoor unit fins of the air conditioning equipment is determined. If the frosting state is a state with a frosting trend, the outdoor unit is controlled to switch to the shutdown state, and the conduction state of the target four-way valve connected to the energy storage module of the air conditioning equipment is controlled to switch to the cooling conduction state, so that the air conditioning equipment enters the self-defrosting state for the outdoor unit fins. In this way, when the air conditioning equipment is in heating mode and it is determined that the outdoor unit fins are showing signs of frost formation, the outdoor unit is switched to a shutdown state, and the conduction device of the target four-way valve is switched to the cooling conduction state. This allows the outdoor unit fins to be heated to prevent frost formation. This solves the problem that current air conditioning equipment needs to switch to cooling mode for a long time to defrost during heating mode, resulting in large changes in indoor ambient temperature. This method proposes a pre-controlled method to prevent frost formation on the outdoor unit fins, reducing the possibility of frost formation on the outdoor unit fins, making the indoor ambient temperature relatively stable, and ensuring the heating efficiency of the air conditioning equipment.
[0098] Based on the foregoing embodiments, embodiments of this application provide a control method, which is applied to an air conditioning device. When the energy storage module is a solution storage device containing energy storage liquid, refer to... Figure 8 As shown, the method includes the following steps:
[0099] Step 301: With the air conditioning unit in heating mode, detect the operating time of the air conditioning unit.
[0100] In this embodiment, after the air conditioning unit switches to heating mode, a timer begins, and the operating time of the air conditioning unit in heating mode is recorded. The air conditioning unit may be an air conditioning unit that includes a hot water system with a solution storage tank, such as a water tank, and the hot water system can also provide hot water to the user. The corresponding energy storage liquid is water.
[0101] Step 302: When the working time is the first preset time, obtain the parameter values of the target working parameters according to the preset sampling interval.
[0102] In this embodiment of the application, the first preset duration may be an empirical duration obtained from a large number of experiments.
[0103] Step 303: Based on the parameter values of the target operating parameters, determine the frosting status of the outdoor unit fins of the air conditioning equipment.
[0104] Step 304: If the frosting state is a state with a tendency to frost, control the outdoor unit to switch to the shutdown state.
[0105] Step 305: Switch the conduction state of the target four-way valve connected to the energy storage module of the air conditioning equipment to the refrigeration conduction state.
[0106] Specifically, the conduction state of the target four-way valve connected to the energy storage module of the air conditioning equipment is switched to the cooling conduction state, so that the air conditioning equipment enters the self-defrosting state for the outdoor unit fins.
[0107] Based on the foregoing embodiments, in other embodiments of this application, reference is made to... Figure 9 As shown, before the air conditioning equipment performs step 302, it is also used to perform steps 306 to 308:
[0108] Step 306: Obtain the first time period in which the air conditioning equipment operates in heating mode within the corresponding historical time period.
[0109] In this embodiment of the application, the historical time period can be the period most recent to the current time, such as one week or two weeks. That is, the first time period is obtained by statistically analyzing the time periods during which the air conditioning equipment operates in heating mode and removing some time periods with shorter heating mode operation durations.
[0110] Step 307: Obtain the second time period within the historical time period for heating the energy storage liquid in the solution storage device to the second temperature threshold.
[0111] In this embodiment of the application, the heating time period of the solution storage device heating the energy storage liquid to the second temperature threshold within the historical time period is also counted, and the time period with shorter heating time period is removed to obtain the second time period.
[0112] Step 308: Determine the first preset duration based on the first time period and the second time period.
[0113] The first preset duration is the empirical duration during which the solution storage device stops heating the energy storage liquid when the air conditioning equipment switches to heating mode.
[0114] In this embodiment, the first time period and the second time period are analyzed to determine the duration during which the air conditioning equipment is in heating mode but stops heating the energy storage liquid, such as water, within the same time period, thus obtaining a first preset duration. For example, by analyzing the first and second time periods of the air conditioning equipment within a week, it can be determined that after the air conditioning equipment switches to heating mode, the proportion of time during which the air conditioning equipment heats the water in the water tank is relatively large within 0 to 1 hour. Therefore, the first preset duration can be determined to be 1 hour. That is to say, after the air conditioning equipment switches to heating mode for 1 hour, the parameter values of the target operating parameters can be obtained according to the preset sampling interval to determine whether there is a tendency for frost to form on the outdoor unit fins and to perform anti-frost operations on the outdoor unit fins.
[0115] Based on the foregoing embodiments, in other embodiments of this application, step 303 may be comprised of steps 303a to 303d:
[0116] Step 303a: Determine the first set of working parameter values, the second set of working parameter values, and the third set of working parameter values.
[0117] The target working parameters include at least one working parameter. The first set of working parameter values is the parameter value of the target working parameter collected at the current sampling time. The second set of working parameter values is the parameter value of the target working parameter collected at the previous sampling time adjacent to the current sampling time. The third set of working parameter values is the parameter value of the target working parameter collected at the previous sampling time adjacent to the previous sampling time.
[0118] Step 303b: Determine the difference between the elements in the third set of working parameter values and the corresponding elements in the second set of working parameter values to obtain the first set of differences.
[0119] Step 303c: Determine the difference between the elements in the second set of working parameter values and the corresponding elements in the first set of working parameter values to obtain the second set of differences.
[0120] Step 303d: If all elements in the first difference set are greater than the first preset threshold corresponding to each element, and all elements in the second difference set are greater than the first preset threshold corresponding to each element, then the frosting state is determined to be a state with a frosting trend.
[0121] Based on the foregoing embodiments, in other embodiments of this application, step 303 can also be implemented by steps 303e to 303f:
[0122] Step 303e: Obtain the current set of target working parameters collected at the current sampling time from the parameter values of the target working parameters.
[0123] The target operating parameters include at least one operating parameter.
[0124] Step 303f: If all elements in the current parameter value set are less than the second preset threshold corresponding to each element, determine that the frosting state is a state with a frosting trend.
[0125] Based on the foregoing embodiments, in other embodiments of this application, the target operating parameters include the operating current parameters or operating power parameters of the outdoor motor of the air conditioning equipment, and the low-pressure parameters of the refrigerant in the outdoor unit or the fin temperature parameters of the outdoor unit fins.
[0126] Based on the foregoing embodiments, in other embodiments of this application, reference is made to... Figure 10 As shown, after the air conditioning equipment performs step 305, it is also used to perform steps 309 to 310:
[0127] Step 309: After the air conditioning unit enters the self-defrosting state for the second preset time, control the outdoor unit to switch to the heating state.
[0128] Step 310: Switch the conduction state of the target four-way valve to the heating conduction state.
[0129] Based on the foregoing embodiments, this application provides a system structure for an air conditioning device, referring to... Figure 11 As shown, it includes: compressor A11, a first four-way valve A12 in the indoor unit, a fourth four-way valve A22 controlling the water flow direction in the water tank, a third four-way valve A14 in the outdoor unit controlling the refrigerant flow direction, an outdoor heat exchanger A15, an outdoor motor A16, an outdoor electronic expansion valve A17, an indoor unit electronic expansion valve A18, an indoor unit A19, a water tank electronic expansion valve A23, a water tank A24, and a flow meter A25 for calculating the water flow rate in the water tank. The fourth four-way valve corresponds to the aforementioned target four-way valve. Correspondingly, for... Figure 11 The implementation process of a control method for preventing frost buildup on the outdoor unit fins, as shown in the air conditioning equipment, can be referred to... Figure 12 As shown, it includes the following steps:
[0130] Step b11: The air conditioning equipment obtains the effective heating time period Ei and the effective hot water time period Fi of the air conditioning equipment within a historical time period.
[0131] The system collects customer usage habits for a week: when the compressor is detected to be running and in heating mode, it collects the indoor unit's outlet air temperature and plots a temperature-time curve. Based on the set outlet air temperature threshold Tf and duration threshold t1, short heating periods are eliminated, and the effective heating periods are stored as Ei (i = 1, 2, 3...). It also collects flow meter data and plots a water consumption-time curve. Based on the set water consumption threshold W and duration threshold t2, short hot water production periods are eliminated, and the effective hot water production periods are stored as Fi (i = 1, 2, 3...).
[0132] Step b12: The air conditioning equipment analyzes the time periods Ei and Fi to obtain the time period Fi within the Ei time period, which does not include hot water production, and obtains Gi. Statistical analysis is performed on Gi to determine the first preset duration.
[0133] The Ci time period refers to the period when heating is only required and there is no demand for hot water, and the hot water tank is at the set temperature during this time.
[0134] Step b13: After the air conditioning equipment has been in heating mode for the first preset time, it begins to collect the current value of the outdoor motor of the outdoor fan and the low pressure value of the refrigerant.
[0135] Step b14: If the current value is lower than the current threshold and the low pressure value is lower than the low pressure threshold, or if the current value and the low pressure value decrease twice consecutively within the two moments adjacent to the current sampling time, and the current value decrease is greater than the current decrease threshold and the low pressure value decrease is greater than the low pressure decrease threshold each time, it is determined that the outdoor unit fins have a tendency to frost.
[0136] Step b15: Switch the fourth four-way valve of the air conditioning equipment to the cooling conduction mode, close the outdoor electronic expansion valve, and control the outdoor motor of the outdoor fan to not run.
[0137] When the air conditioning unit switches the second four-way valve to the cooling conduction mode, the heat storage device becomes low pressure to provide the evaporation side for the indoor unit; the outdoor unit fins are deactivated and enter a self-defrosting state.
[0138] Correspondingly, Figure 11 When the air conditioning unit is in heating mode, the refrigerant flow direction can be referred to... Figure 13 As shown, when the air conditioner switches to heating mode and hot water mode, in heating mode, the refrigerant flow is as follows: compressor A11 - first four-way valve A12 - indoor unit A19 - indoor unit electronic expansion valve A18 - outdoor electronic expansion valve A17 - outdoor heat exchanger A15 - third four-way valve A14 - compressor A11. In hot water mode, the refrigerant flow is as follows: compressor A11 - fourth four-way valve A22 - water tank A24 - water tank electronic expansion valve A23 - outdoor electronic expansion valve A17 - outdoor heat exchanger A15 - third four-way valve A14 - compressor A11. After the air conditioner switches the fourth four-way valve to cooling mode, closes the outdoor electronic expansion valve, and stops the outdoor fan motor from running, the refrigerant flow can be referenced... Figure 14 As shown, the corresponding refrigerant flow direction is: compressor A11 - first four-way valve A12 - indoor unit A19 - indoor unit electronic expansion valve A18 - water tank electronic expansion valve A23 - water tank A24 - fourth four-way valve A22 - compressor A11.
[0139] Step b16: Five minutes after the air conditioning unit switches to self-defrosting mode, control the fourth four-way valve to switch back to heating mode, open the outdoor electronic expansion valve to the initial opening degree, and the outdoor motor of the outdoor fan operates according to the control logic of this heating mode.
[0140] This means that the water tank can remain either off or on.
[0141] It should be noted that the descriptions of the same steps and contents as in other embodiments in this embodiment can be found in the descriptions in other embodiments, and will not be repeated here.
[0142] In this embodiment, when the air conditioning equipment is in heating mode, the parameter values of the target operating parameters of the outdoor unit of the air conditioning equipment are obtained according to a preset sampling interval. Based on the parameter values of the target operating parameters, the frosting state of the outdoor unit fins of the air conditioning equipment is determined. If the frosting state is a state with a frosting trend, the outdoor unit is controlled to switch to the shutdown state, and the conduction state of the target four-way valve connected to the energy storage module of the air conditioning equipment is controlled to switch to the cooling conduction state, so that the air conditioning equipment enters the self-defrosting state for the outdoor unit fins. In this way, when the air conditioning equipment is in heating mode and it is determined that the outdoor unit fins are showing signs of frost formation, the outdoor unit is switched to a shutdown state, and the conduction device of the target four-way valve is switched to the cooling conduction state. This allows the outdoor unit fins to be heated to prevent frost formation. This solves the problem that current air conditioning equipment needs to switch to cooling mode for a long time to defrost during heating mode, resulting in large changes in indoor ambient temperature. This method proposes a pre-controlled method to prevent frost formation on the outdoor unit fins, reducing the possibility of frost formation on the outdoor unit fins, making the indoor ambient temperature relatively stable, and ensuring the heating efficiency of the air conditioning equipment.
[0143] Based on the foregoing embodiments, embodiments of this application provide a control method, which is applied to an air conditioning device. When the energy storage module is a solution storage device containing energy storage liquid, refer to... Figure 15 As shown, the method includes the following steps:
[0144] Step 401: When the air conditioning equipment is in heating mode, detect the temperature of the energy storage liquid in the solution storage tank.
[0145] Step 402: If the liquid temperature is greater than or equal to the second temperature threshold and the solution storage device currently has no energy storage liquid output, obtain the parameter values of the target working parameters according to the preset sampling interval.
[0146] In this embodiment, the second temperature threshold is an empirical value obtained from numerous experiments. For example, after the air conditioning device switches to heating mode, the water temperature in the water tank is detected. Only when the water temperature is greater than or equal to the second temperature threshold and there is currently no hot water output from the water tank, i.e., the user is not using the hot water in the water tank, is the parameter value of the target operating parameter obtained according to the preset sampling interval.
[0147] Step 403: Based on the parameter values of the target operating parameters, determine the frosting status of the outdoor unit fins of the air conditioning equipment.
[0148] Step 404: If the frosting state is a state with a tendency to frost, control the outdoor unit to switch to the shutdown state.
[0149] Step 405: Switch the conduction state of the target four-way valve connected to the energy storage module of the air conditioning equipment to the refrigeration conduction state.
[0150] Specifically, the conduction state of the target four-way valve connected to the energy storage module of the air conditioning equipment is switched to the cooling conduction state, so that the air conditioning equipment enters the self-defrosting state for the outdoor unit fins.
[0151] Based on the foregoing embodiments, in other embodiments of this application, step 403 may be comprised of steps 403a to 403d:
[0152] Step 403a: Determine the first set of working parameter values, the second set of working parameter values, and the third set of working parameter values.
[0153] The target working parameters include at least one working parameter. The first set of working parameter values is the parameter value of the target working parameter collected at the current sampling time. The second set of working parameter values is the parameter value of the target working parameter collected at the previous sampling time adjacent to the current sampling time. The third set of working parameter values is the parameter value of the target working parameter collected at the previous sampling time adjacent to the previous sampling time.
[0154] Step 403b: Determine the difference between the elements in the third set of working parameter values and the corresponding elements in the second set of working parameter values to obtain the first set of differences.
[0155] Step 403c: Determine the difference between the elements in the second set of working parameter values and the corresponding elements in the first set of working parameter values to obtain the second set of differences.
[0156] Step 403d: If all elements in the first difference set are greater than the first preset threshold corresponding to each element, and all elements in the second difference set are greater than the first preset threshold corresponding to each element, then the frosting state is determined to be a state with a frosting trend.
[0157] Based on the foregoing embodiments, in other embodiments of this application, step 403 can also be implemented by steps 403e to 403f:
[0158] Step 403e: Obtain the current set of target working parameters collected at the current sampling time from the parameter values of the target working parameters.
[0159] The target operating parameters include at least one operating parameter.
[0160] Step 403f: If all elements in the current parameter value set are less than the second preset threshold corresponding to each element, determine that the frosting state is a state with a frosting trend.
[0161] Based on the foregoing embodiments, in other embodiments of this application, the target operating parameters include the operating current parameters or operating power parameters of the outdoor motor of the air conditioning equipment, and the low-pressure parameters of the refrigerant in the outdoor unit or the fin temperature parameters of the outdoor unit fins.
[0162] Based on the foregoing embodiments, in other embodiments of this application, reference is made to... Figure 16 As shown, after the air conditioning equipment performs step 405, it is also used to perform steps 406 to 407:
[0163] Step 406: After the air conditioning unit enters the self-defrosting state for the second preset time, control the outdoor unit to switch to the heating state.
[0164] Step 407: Switch the conduction state of the target four-way valve to the heating conduction state.
[0165] It should be noted that the descriptions of the same steps and contents as in other embodiments in this embodiment can be found in the descriptions in other embodiments, and will not be repeated here.
[0166] In this embodiment, when the air conditioning equipment is in heating mode, the parameter values of the target operating parameters of the outdoor unit of the air conditioning equipment are obtained according to a preset sampling interval. Based on the parameter values of the target operating parameters, the frosting state of the outdoor unit fins of the air conditioning equipment is determined. If the frosting state is a state with a frosting trend, the outdoor unit is controlled to switch to the shutdown state, and the conduction state of the target four-way valve connected to the energy storage module of the air conditioning equipment is controlled to switch to the cooling conduction state, so that the air conditioning equipment enters the self-defrosting state for the outdoor unit fins. In this way, when the air conditioning equipment is in heating mode and it is determined that the outdoor unit fins are showing signs of frost formation, the outdoor unit is switched to a shutdown state, and the conduction device of the target four-way valve is switched to the cooling conduction state. This allows the outdoor unit fins to be heated to prevent frost formation. This solves the problem that current air conditioning equipment needs to switch to cooling mode for a long time to defrost during heating mode, resulting in large changes in indoor ambient temperature. This method proposes a pre-controlled method to prevent frost formation on the outdoor unit fins, reducing the possibility of frost formation on the outdoor unit fins, making the indoor ambient temperature relatively stable, and ensuring the heating efficiency of the air conditioning equipment.
[0167] Based on the foregoing embodiments, embodiments of this application provide a control device, referring to... Figure 17 As shown, the control device 5 may include: an acquisition unit 51, a first determination unit 52, and a control unit 53; wherein:
[0168] The acquisition unit 51 is used to acquire the parameter values of the target operating parameters of the outdoor unit of the air conditioning equipment according to a preset sampling interval when the air conditioning equipment is in heating mode.
[0169] The first determining unit 52 is used to determine the frosting state of the outdoor unit fins of the air conditioning equipment based on the parameter values of the target operating parameters.
[0170] Control unit 53 is used to control the outdoor unit to switch to the shutdown state if the frosting state is a state with a tendency to frost.
[0171] The control unit 53 is also used to control the switching of the conduction state of the target four-way valve connected to the energy storage module of the air conditioning equipment to the cooling conduction state, so that the air conditioning equipment enters the self-defrosting state for the outdoor unit fins.
[0172] In other embodiments of this application, when the energy storage module is a heat storage module in which the material undergoes a phase change, the acquisition unit includes: a first detection module and a first acquisition module; wherein:
[0173] The first detection module is used to detect the heat storage temperature of the heat storage module when the air conditioning equipment is in heating mode.
[0174] The first acquisition module is used to acquire the parameter values of the target operating parameters according to a preset sampling interval if the heat storage temperature is greater than or equal to the first temperature threshold.
[0175] In other embodiments of this application, when the energy storage module is a solution reservoir storing energy storage liquid, the control unit includes: a second detection module and a second acquisition module; wherein:
[0176] The second detection module is used to detect the working time of the air conditioning equipment when it is in heating mode.
[0177] The second acquisition module is used to acquire the parameter values of the target working parameters according to a preset sampling interval when the working time is the first preset time.
[0178] In other embodiments of this application, the control device further includes a second determining unit before the acquiring unit; wherein:
[0179] The acquisition unit is also used to acquire the first time period in which the air conditioning equipment operates in heating mode within the corresponding historical time period.
[0180] The acquisition unit is also used to acquire a second time period within a historical time period during which the solution storage tank heats the energy storage liquid to a second temperature threshold.
[0181] The second determining unit is further configured to determine a first preset duration based on the first time period and the second time period; wherein the first preset duration is the empirical duration during which the solution storage device stops heating the energy storage liquid when the air conditioning equipment switches to the heating mode.
[0182] In other embodiments of this application, when the energy storage module is a solution storage device storing energy storage liquid, the acquisition unit includes: a third detection module and a third acquisition module; wherein:
[0183] The third detection module is used to detect the liquid temperature of the energy storage liquid in the solution storage tank when the air conditioning equipment is in heating mode.
[0184] The third acquisition module is used to acquire the parameter values of the target operating parameters according to a preset sampling interval if the liquid temperature is greater than or equal to the second temperature threshold and the solution storage device currently has no energy storage liquid output.
[0185] In other embodiments of this application, the first determining unit includes: a first determining module and a second determining module; wherein:
[0186] The first determining module is used to determine a first set of working parameter values, a second set of working parameter values, and a third set of working parameter values; wherein, the target working parameter includes at least one working parameter, the first set of working parameter values is the parameter value of the target working parameter collected at the current sampling time, the second set of working parameter values is the parameter value of the target working parameter collected at the previous sampling time adjacent to the current sampling time, and the third set of working parameter values is the parameter value of the target working parameter collected at the previous sampling time adjacent to the previous sampling time;
[0187] The first determining module is also used to determine the difference between the elements in the third set of working parameter values and the corresponding elements in the second set of working parameter values, so as to obtain the first difference set;
[0188] The first determining module is also used to determine the difference between the elements in the second set of working parameter values and the corresponding elements in the first set of working parameter values, so as to obtain the second difference set;
[0189] The second determining module is used to determine the frosting state as having a frosting trend state if all elements in the first difference set are greater than the first preset threshold corresponding to each element, and all elements in the second difference set are greater than the first preset threshold corresponding to each element.
[0190] In other embodiments of this application, the first determining unit includes: a fourth obtaining module and a third determining module; wherein:
[0191] The fourth acquisition module is used to acquire the current set of target working parameters collected at the current sampling time from the parameter values of the target working parameters; wherein the target working parameters include at least one working parameter;
[0192] The third determining module is used to determine the frosting state as having a frosting trend if all elements in the current parameter value set are less than the second preset threshold corresponding to each element.
[0193] In other embodiments of this application, the target operating parameters include the operating current parameters or operating power parameters of the outdoor motor of the air conditioning equipment, and the low-pressure parameters of the refrigerant in the outdoor unit or the fin temperature parameters of the outdoor unit fins.
[0194] In other embodiments of this application, after the switching unit performs the step of switching the state of the target four-way valve connected to the energy storage module of the air conditioning equipment to the cooling state,
[0195] The control unit is also used to control the outdoor unit to switch to heating mode after the air conditioning equipment has entered the self-defrosting state for a second preset time.
[0196] The switching unit is also used to switch the conduction state of the target four-way valve to the heating conduction state.
[0197] It should be noted that the specific implementation process of information interaction between units and modules in this embodiment can be referred to Figures 1-3 , Figures 8-10 and Figures 15-16 The implementation process of the control method provided in the corresponding embodiments will not be described in detail here.
[0198] In this embodiment, when the air conditioning equipment is in heating mode, the parameter values of the target operating parameters of the outdoor unit of the air conditioning equipment are obtained according to a preset sampling interval. Based on the parameter values of the target operating parameters, the frosting state of the outdoor unit fins of the air conditioning equipment is determined. If the frosting state is a state with a frosting trend, the outdoor unit is controlled to switch to the shutdown state, and the conduction state of the target four-way valve connected to the energy storage module of the air conditioning equipment is controlled to switch to the cooling conduction state, so that the air conditioning equipment enters the self-defrosting state for the outdoor unit fins. In this way, when the air conditioning equipment is in heating mode and it is determined that the outdoor unit fins are showing signs of frost formation, the outdoor unit is switched to a shutdown state, and the conduction device of the target four-way valve is switched to the cooling conduction state. This allows the outdoor unit fins to be heated to prevent frost formation. This solves the problem that current air conditioning equipment needs to switch to cooling mode for a long time to defrost during heating mode, resulting in large changes in indoor ambient temperature. This method proposes a pre-controlled method to prevent frost formation on the outdoor unit fins, reducing the possibility of frost formation on the outdoor unit fins, making the indoor ambient temperature relatively stable, and ensuring the heating efficiency of the air conditioning equipment.
[0199] Based on the foregoing embodiments, embodiments of this application provide an air conditioning device, referring to... Figure 18 As shown, the air conditioning device 6 may include: an indoor unit 61, an outdoor unit 62, an energy storage module 63, and a control device 64; wherein:
[0200] The specific implementation process of the control device can be referred to Figures 1-3 , Figures 8-10 and Figures 15-16 The implementation process of the method shown will not be described in detail here. The control device 64 is the same device as the aforementioned control device 5.
[0201] Based on the foregoing embodiments, embodiments of this application provide a computer-readable storage medium, simply referred to as a storage medium, which stores one or more programs that can be executed by one or more processors to achieve, as follows: Figures 1-3 , Figures 8-10 and Figures 15-16 The implementation process of the control method provided in the corresponding embodiments will not be described in detail here.
[0202] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of hardware embodiments, software embodiments, or embodiments combining software and hardware aspects. Furthermore, this application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.
[0203] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.
[0204] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.
[0205] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.
[0206] The above description is merely a preferred embodiment of this application and is not intended to limit the scope of protection of this application.
Claims
1. A control method, characterized in that, The method includes: When the air conditioning equipment is in heating mode, the parameter values of the target operating parameters of the outdoor unit of the air conditioning equipment are obtained according to the preset sampling interval; A first set of working parameter values, a second set of working parameter values, and a third set of working parameter values are determined; wherein, the target working parameter includes at least one working parameter, the first set of working parameter values is the parameter value of the target working parameter collected at the current sampling time, the second set of working parameter values is the parameter value of the target working parameter collected at the previous sampling time adjacent to the current sampling time, and the third set of working parameter values is the parameter value of the target working parameter collected at the previous sampling time adjacent to the previous sampling time; The difference between the elements in the third set of working parameter values and the corresponding elements in the second set of working parameter values is determined to obtain the first set of differences; The difference between the elements in the second set of working parameter values and the corresponding elements in the first set of working parameter values is determined to obtain the second set of differences; If all elements in the first difference set are greater than the first preset threshold corresponding to each element, and all elements in the second difference set are greater than the first preset threshold corresponding to each element, the frosting state is determined to be a state with a frosting trend. If the frosting state is a state with a tendency to frost, control the outdoor unit's fan to stop and control the outdoor unit's electronic expansion valve to close. The conduction state of the target four-way valve connected to the energy storage module of the air conditioning equipment is switched to the cooling conduction state, so that the air conditioning equipment enters the self-defrosting state for the outdoor unit fins.
2. The method according to claim 1, characterized in that, When the energy storage module is a heat storage module in which the material undergoes a phase change, the step of acquiring the target operating parameters of the outdoor unit of the air conditioning equipment according to the preset sampling interval when the air conditioning equipment is in heating mode includes: When the air conditioning equipment is in the heating mode, the heat storage temperature of the heat storage module is detected; If the heat storage temperature is greater than or equal to the first temperature threshold, the parameter values of the target operating parameters are obtained according to the preset sampling interval.
3. The method according to claim 1, characterized in that, When the energy storage module is a solution storage device containing energy storage liquid, the step of acquiring the target operating parameters of the outdoor unit of the air conditioning equipment according to a preset sampling interval when the air conditioning equipment is in heating mode includes: When the air conditioning unit is in the heating mode, the operating time of the air conditioning unit is detected. When the working time is a first preset time, the parameter values of the target working parameters are obtained according to the preset sampling interval.
4. The method according to claim 3, characterized in that, Before acquiring the parameter values of the target working parameters according to a preset sampling interval when the working duration is a first preset duration, the method further includes: Obtain the first time period within the historical time period corresponding to the air conditioning equipment, in which the air conditioning equipment operates in the heating mode; Obtain a second time period within the historical time period during which the solution storage device heats the energy storage liquid to a second temperature threshold. Based on the first time period and the second time period, the first preset duration is determined; wherein, the first preset duration is the empirical duration during which the solution storage device stops heating the energy storage liquid when the air conditioning equipment switches to the heating mode.
5. The method according to claim 1, characterized in that, When the energy storage module is a solution storage device containing energy storage liquid, the step of acquiring the target operating parameters of the outdoor unit of the air conditioning equipment according to a preset sampling interval when the air conditioning equipment is in heating mode includes: When the air conditioning equipment is in heating mode, the liquid temperature of the energy storage liquid in the solution storage tank is detected; If the liquid temperature is greater than or equal to the second temperature threshold, and the solution storage device currently has no energy storage liquid output, the parameter value of the target operating parameter is obtained according to the preset sampling interval.
6. The method according to any one of claims 1 to 5, characterized in that, The method further includes: From the parameter values of the target operating parameters, obtain the current parameter value set of the target operating parameters collected at the current sampling time; wherein, the target operating parameters include at least one operating parameter; If all elements in the current parameter value set are less than the second preset threshold corresponding to each element, the frosting state is determined to be the state with a frosting trend.
7. The method according to claim 1, characterized in that, The target operating parameters include the operating current parameter or the operating power parameter of the outdoor motor of the air conditioning equipment, and the low-pressure parameter of the refrigerant in the outdoor unit or the fin temperature parameter of the outdoor unit fins.
8. The method according to claim 1, characterized in that, After switching the state of the target four-way valve connected to the energy storage module of the air conditioning equipment to the cooling state, the method further includes: After the air conditioning unit enters the self-defrosting state for a second preset time, the outdoor unit is switched to the heating state. Switch the conduction state of the target four-way valve to the heating conduction state.
9. A control device, characterized in that, The device includes: an acquisition unit, a first determination unit, and a control unit; wherein: The acquisition unit is used to acquire the parameter values of the target operating parameters of the outdoor unit of the air conditioning equipment according to a preset sampling interval when the air conditioning equipment is in heating mode. The first determining unit is configured to determine a first set of working parameter values, a second set of working parameter values, and a third set of working parameter values; wherein the target working parameter includes at least one working parameter, the first set of working parameter values is the parameter value of the target working parameter collected at the current sampling time, the second set of working parameter values is the parameter value of the target working parameter collected at the previous sampling time adjacent to the current sampling time, and the third set of working parameter values is the parameter value of the target working parameter collected at the previous sampling time adjacent to the previous sampling time; the unit determines the difference between the elements in the third set of working parameter values and the corresponding elements in the second set of working parameter values to obtain a first difference set; the unit determines the difference between the elements in the second set of working parameter values and the corresponding elements in the first set of working parameter values to obtain a second difference set; if all elements in the first difference set are greater than a first preset threshold corresponding to each element, and all elements in the second difference set are greater than the first preset threshold corresponding to each element, the frosting state is determined to be a state with a frosting trend. The control unit is configured to, if the frosting state is a state with a tendency to frost, control the outdoor unit's fan to stop and control the outdoor unit's electronic expansion valve to close. The control unit is also used to control the switching of the conduction state of the target four-way valve connected to the energy storage module of the air conditioning equipment to the cooling conduction state, so that the air conditioning equipment enters the self-defrosting state for the outdoor unit fins.
10. An air conditioning device, characterized in that, The device includes an indoor unit, an outdoor unit, an energy storage module, and a control device as described in claim 9.
11. A storage medium, characterized in that, The storage medium stores a control program, which, when executed by a processor, implements the steps of the control method as described in any one of claims 1 to 8.
Citation Information
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