Solenoid valve state detection method and device and refrigeration equipment

Abstract

The invention provides a state detection method and device of an electromagnetic valve and refrigeration equipment, and the state detection method of the electromagnetic valve comprises the steps that after the refrigeration equipment works for a first target refrigeration period, the first temperature of an air outlet of the electromagnetic valve, the second temperature of a freezing chamber and the third temperature of a refrigerating chamber are obtained; after the refrigeration equipment works for a second target refrigeration period, the fourth temperature of the air outlet of the electromagnetic valve, the fifth temperature of the freezing chamber and the sixth temperature of the refrigerating chamber are obtained; and the state of the electromagnetic valve is determined according to the first temperature, the second temperature, the third temperature, the fourth temperature, the fifth temperature and the sixth temperature. According to the method, the state of the electromagnetic valve is jointly determined by utilizing the temperature at the air outlet of the electromagnetic valve, the temperature of the freezing chamber and the temperature of the refrigerating chamber after two adjacent target refrigeration cycles, so that errors caused by judging the state of the electromagnetic valve according to temperature information after a single target refrigeration cycle are avoided; the state judgment accuracy of the electromagnetic valve is improved, and normal refrigeration of the refrigeration equipment is guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of refrigeration equipment, and in particular, to a method and device for detecting the state of a solenoid valve and a refrigeration equipment. Background Art

[0002] Currently, refrigeration equipment relies on solenoid valves to perform ventilation and refrigeration on compartments such as refrigerators and freezers. However, since the compressed refrigeration contains impurities, it is very easy for the solenoid valve to malfunction during the cold air commutation process, affecting the normal refrigeration of the refrigeration equipment. Summary of the Invention

[0003] In view of this, an object of the present invention is to provide a method and device for detecting the state of a solenoid valve and a refrigeration equipment, which use the temperature at the outlet of the solenoid valve, the temperature of the freezer compartment, and the temperature of the refrigerator compartment after two adjacent target refrigeration cycles to jointly determine the state of the solenoid valve, avoiding the error caused by judging the state of the solenoid valve based on the temperature information after a single target refrigeration cycle, improving the accuracy of the state judgment of the solenoid valve, and thus ensuring the normal refrigeration of the refrigeration equipment.

[0004] According to a first aspect of the present invention, there is provided a method for detecting the state of a solenoid valve, which is applied to a detection module in a refrigeration equipment. The refrigeration equipment further includes a freezer compartment, a refrigerator compartment, a solenoid valve, a solenoid valve temperature sensor, a freezer temperature sensor, and a refrigerator temperature sensor. The solenoid valve temperature sensor is disposed at the inlet of the solenoid valve, and the solenoid valve temperature sensor is used to detect the temperature at the outlet of the solenoid valve. The freezer temperature sensor is disposed inside the freezer compartment, and the freezer temperature sensor is used to detect the temperature of the freezer compartment. The refrigerator sensor is disposed inside the refrigerator compartment, and the refrigerator sensor is used to detect the temperature of the refrigerator compartment. The detection module is electrically connected to the solenoid valve temperature sensor, the freezer temperature sensor, and the refrigerator temperature sensor. The method includes: after the refrigeration equipment operates for a first target refrigeration cycle, respectively obtaining, through the solenoid valve temperature sensor, the freezer temperature sensor, and the refrigerator sensor, a first temperature at the outlet of the solenoid valve, a second temperature of the freezer compartment, and a third temperature of the refrigerator compartment, where the first target refrigeration cycle is any target refrigeration cycle of the refrigeration equipment; after the refrigeration equipment operates for a second target refrigeration cycle, respectively obtaining, through the solenoid valve temperature sensor, the freezer temperature sensor, and the refrigerator sensor, a fourth temperature at the outlet of the solenoid valve, a fifth temperature of the freezer compartment, and a sixth temperature of the refrigerator compartment, where the second target refrigeration cycle is the next target refrigeration cycle adjacent to the first target refrigeration cycle; and determining the state of the solenoid valve according to the first temperature, the second temperature, the third temperature, the fourth temperature, the fifth temperature, and the sixth temperature, where the state includes a normal state and an abnormal state.

[0005] In a possible implementation of the first aspect, it is characterized in that the step of determining the state of the electromagnetic valve according to the first temperature, the second temperature, the third temperature, the fourth temperature, the fifth temperature, and the sixth temperature includes: calculating, according to the first temperature and the second temperature, the temperature difference between the temperature of the freezer compartment and the temperature of the intake port of the electromagnetic valve after the first target refrigeration cycle as the first temperature difference; calculating, according to the second temperature and the third temperature, the temperature difference between the temperature of the freezer compartment and the temperature of the refrigerator compartment after the first target refrigeration cycle as the second temperature difference; calculating, according to the fourth temperature and the fifth temperature, the temperature difference between the temperature of the freezer compartment and the temperature of the intake port of the electromagnetic valve after the second target refrigeration cycle as the third temperature difference; calculating, according to the fifth temperature and the sixth temperature, the temperature difference between the temperature of the freezer compartment and the temperature of the refrigerator compartment after the second target refrigeration cycle as the fourth temperature difference; and determining the state of the electromagnetic valve according to the first temperature difference, the second temperature difference, the third temperature difference, and the fourth temperature difference.

[0006] In a possible implementation of the first aspect, the step of determining the state of the electromagnetic valve according to the first temperature difference, the second temperature difference, the third temperature difference, and the fourth temperature difference includes: calculating, according to the first temperature difference and the third temperature difference, the change value of the temperature difference between the temperature of the intake port of the electromagnetic valve and the temperature of the freezer compartment after two adjacent target refrigeration cycles as the first temperature change value; calculating, according to the second temperature difference and the fourth temperature difference, the change value of the temperature difference between the temperature of the freezer compartment and the temperature of the refrigerator compartment after two adjacent target refrigeration cycles as the second temperature change value; and determining the state of the electromagnetic valve according to the first temperature change value, the first temperature change threshold corresponding to the first temperature change value, the second temperature change value, and the second temperature change threshold corresponding to the second temperature change value, where the first temperature change threshold and the second temperature change threshold are pre-configured in the detection module.

[0007] In a possible implementation of the first aspect, the step of determining the state of the solenoid valve according to the first temperature change value, the first temperature change threshold corresponding to the first temperature change value, the second temperature change value, and the second temperature change threshold corresponding to the second temperature change value includes: comparing the first temperature change value with the first temperature change threshold, and comparing the second temperature change value with the second temperature change threshold; if the first temperature change value is less than or equal to the first temperature change threshold and the second temperature change value is less than or equal to the second temperature change threshold, determining that the state of the solenoid valve is a normal state; if at least one of the first temperature change value and the second temperature change value is greater than the change threshold corresponding to the change value, obtaining the temperature of the intake port of the solenoid valve, the temperature of the freezer compartment, and the temperature of the refrigerator compartment after a preset number of target refrigeration cycles; determining the state of the solenoid valve according to the temperature of the intake port of the solenoid valve, the temperature of the freezer compartment, and the temperature of the refrigerator compartment after the preset number of target refrigeration cycles.

[0008] In a possible implementation of the first aspect, the step of determining the state of the solenoid valve according to the temperature of the intake port of the solenoid valve, the temperature of the freezer compartment, and the temperature of the refrigerator compartment after the preset number of target refrigeration cycles includes: obtaining the change trend of the temperature of the intake port of the solenoid valve during the preset number of target refrigeration cycles as the first temperature change trend; obtaining the change trend of the temperature of the freezer compartment during the preset number of target refrigeration cycles as the second temperature change trend; obtaining the change trend of the temperature of the refrigerator compartment during the preset number of target refrigeration cycles as the third temperature change trend; determining the state of the solenoid valve according to the first temperature change trend, the second temperature change trend, and the third temperature change trend.

[0009] In a possible implementation manner of the first aspect, the step of determining the state of the electromagnetic valve according to the first temperature change trend, the second temperature change trend, and the third temperature change trend includes: If the first temperature change trend meets the first preset temperature change trend corresponding to the first temperature change trend, the second temperature change trend meets the second preset temperature change trend corresponding to the second temperature change trend, and the third temperature change trend meets the third preset temperature change trend corresponding to the third temperature change trend, then determine that the state of the electromagnetic valve is the normal state, where the first preset temperature change trend, the second preset temperature change trend, and the third preset temperature change trend are pre-configured in the detection module; If at least one of the first temperature change trend, the second temperature change trend, and the third temperature change trend does not meet the preset temperature change trend corresponding to this temperature change trend, then determine that the state of the electromagnetic valve is the abnormal state.

[0010] In a possible implementation manner of the first aspect, before the step of respectively obtaining the first temperature at the air outlet of the electromagnetic valve, the second temperature in the freezer, and the third temperature in the refrigerator by the electromagnetic valve temperature sensor, the freezer temperature sensor, and the refrigerator sensor after the refrigeration device operates for the first target refrigeration cycle, the method further includes: After the refrigeration device operates for any refrigeration cycle, respectively obtain the temperature at the air outlet of the electromagnetic valve, the temperature in the freezer, and the temperature in the refrigerator by the electromagnetic valve temperature sensor, the freezer temperature sensor, and the refrigerator sensor; If the temperature at the air outlet of the electromagnetic valve, the temperature in the freezer, and the temperature in the refrigerator corresponding to this refrigeration cycle meet the preset temperature condition, then determine this refrigeration cycle as the target refrigeration cycle, where the preset temperature condition is pre-configured in the detection module.

[0011] In a possible implementation manner of the first aspect, the step of determining this refrigeration cycle as the target refrigeration cycle if the temperature at the air outlet of the electromagnetic valve, the temperature in the freezer, and the temperature in the refrigerator after this refrigeration cycle meet the preset temperature condition includes: If after this refrigeration cycle, the temperature at the air outlet of the electromagnetic valve is less than the temperature in the freezer, and the temperature in the freezer is less than the temperature in the refrigerator, then determine that the temperature at the air outlet of the electromagnetic valve, the temperature in the freezer, and the temperature in the refrigerator after this refrigeration cycle meet the preset temperature condition, and determine this refrigeration cycle as the target refrigeration cycle.

[0012] According to a second aspect of the present invention, there is provided a state detection device for a solenoid valve, which is applied to a detection module in a refrigeration device. The refrigeration device further includes a freezer compartment, a refrigerating compartment, a solenoid valve, a solenoid valve temperature sensor, a freezing temperature sensor, and a refrigerating temperature sensor. The solenoid valve temperature sensor is disposed at the air inlet of the solenoid valve, and the solenoid valve temperature sensor is used to detect the temperature of the air outlet of the solenoid valve. The freezing temperature sensor is disposed inside the freezer compartment, and the freezing temperature sensor is used to detect the temperature of the freezer compartment. The refrigerating sensor is disposed inside the refrigerating compartment, and the refrigerating sensor is used to detect the temperature of the refrigerating compartment. The detection module is electrically connected to the solenoid valve temperature sensor, the freezing temperature sensor, and the refrigerating temperature sensor. The device includes: a first acquisition unit, configured to acquire a first temperature of the air outlet of the solenoid valve, a second temperature of the freezer compartment, and a third temperature of the refrigerating compartment after the refrigeration device operates for a first target refrigeration cycle, where the first target refrigeration cycle is any target refrigeration cycle of the refrigeration device; a second acquisition unit, configured to acquire a fourth temperature of the air outlet of the solenoid valve, a fifth temperature of the freezer compartment, and a sixth temperature of the refrigerating compartment after the refrigeration device operates for a second target refrigeration cycle, where the second target refrigeration cycle is the next target refrigeration cycle adjacent to the first target refrigeration cycle; a state determination unit, configured to determine the state of the solenoid valve according to the first temperature, the second temperature, the third temperature, the fourth temperature, the fifth temperature, and the sixth temperature, where the state includes a normal state and an abnormal state.

[0013] According to a third aspect of the present invention, there is provided a refrigeration device, which includes: a detection module, a freezer compartment, a refrigerating compartment, a solenoid valve, a solenoid valve temperature sensor, a freezing temperature sensor, and a refrigerating temperature sensor; the solenoid valve temperature sensor is disposed at the air inlet of the solenoid valve and is used to detect the temperature of the air inlet of the solenoid valve; the freezing temperature sensor is disposed inside the freezer compartment and is used to detect the temperature of the freezer compartment; the refrigerating sensor is disposed inside the refrigerating compartment and is used to detect the temperature of the refrigerating compartment; the detection module is electrically connected to the solenoid valve temperature sensor, the freezing temperature sensor, and the refrigerating temperature sensor, and the detection module is configured to execute the method of the first aspect.

[0014] Based on any of the above aspects, the embodiments of the present invention provide a method, a device, and a refrigeration device for detecting the state of a solenoid valve. Description of the Drawings

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required to be referred to in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic flowchart of the steps of the solenoid valve state detection method provided by an embodiment of the present invention.

[0017] Figure 2 It is a schematic flowchart of the steps of the solenoid valve state detection method provided by another embodiment of the present invention.

[0018] Figure 3 It is a schematic diagram of the functional modules of the solenoid valve state detection device provided by this embodiment. Detailed implementation manners

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0021] It should be noted that: similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0022] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0023] It should be noted that, without conflict, different features in the embodiments of the present invention can be combined with each other.

[0024] To solve the technical problems mentioned in the foregoing background art and the above problems, the inventors have innovatively designed the following technical solutions. The specific implementation solutions of the present invention will be described in detail below with reference to the accompanying drawings.

[0025] Please refer to Figure 1 , Figure 1 which is a schematic flowchart of the steps of a method for detecting the state of a solenoid valve provided by an embodiment of the present invention. This method is applied to Figure 3 the solenoid valve state detection device 100 shown. The solenoid valve state detection device 100 is applied to the detection module in a refrigeration device. The refrigeration device further includes a freezer compartment, a refrigerator compartment, a solenoid valve, a solenoid valve temperature sensor, a freezer temperature sensor, and a refrigerator temperature sensor. In this embodiment, the refrigeration device can be a refrigerator, a freezer, or other refrigeration devices, and the refrigeration device is not specifically limited herein. The solenoid valve temperature sensor is disposed at the inlet of the solenoid valve. The solenoid valve temperature sensor is used to detect the temperature at the outlet of the solenoid valve. The freezer temperature sensor is disposed inside the freezer compartment. The freezer temperature sensor is used to detect the temperature of the freezer compartment. The refrigerator sensor is disposed inside the refrigerator compartment. The refrigerator sensor is used to detect the temperature of the refrigerator compartment. The detection module is electrically connected to the solenoid valve temperature sensor, the freezer temperature sensor, and the refrigerator temperature sensor. Among them, the connection manner in which the detection module is electrically connected to the solenoid valve temperature sensor, the freezer temperature sensor, and the refrigerator temperature sensor can be an electrical signal connection or a line connection, and the connection manner of the electrical connection is not specifically limited herein.

[0026] Next, the Figure 1 shown process will be elaborated in detail. The method for detecting the state of the solenoid valve can specifically include the following steps:

[0027] Step S110: After the refrigeration device operates for a first target refrigeration cycle, obtain the first temperature at the outlet of the solenoid valve, the second temperature of the freezer compartment, and the third temperature of the refrigerator compartment through the solenoid valve temperature sensor, the freezer temperature sensor, and the refrigerator sensor respectively.

[0028] Among them, the refrigeration cycle refers to the complete process of the refrigeration device from starting refrigeration to stopping refrigeration and then restarting refrigeration. The target refrigeration cycle can be any refrigeration cycle during the refrigeration process of the refrigeration device, or a refrigeration cycle that meets preset conditions during the refrigeration process of the refrigeration device. The determination of the target refrigeration cycle is not specifically limited herein. In this embodiment, the first target refrigeration cycle is any target refrigeration cycle of the refrigeration device.

[0029] In an embodiment of the present invention, after the refrigeration equipment completes the refrigeration of the first target refrigeration cycle, at this time, the solenoid valve temperature sensor located at the outlet of the solenoid valve will detect the temperature at the outlet of the solenoid valve. The refrigeration sensor will also obtain the temperature of the refrigerating chamber after working for the first target refrigeration cycle. The freezing sensor will also obtain the temperature of the freezing chamber after the refrigeration equipment works for the first target refrigeration cycle.

[0030] Step S120: After the refrigeration equipment works for the second target refrigeration cycle, respectively obtain the fourth temperature at the outlet of the solenoid valve, the fifth temperature of the freezing chamber, and the sixth temperature of the refrigerating chamber through the solenoid valve temperature sensor, the freezing temperature sensor, and the refrigeration sensor. The second target refrigeration cycle is the next target refrigeration cycle adjacent to the first target refrigeration cycle.

[0031] In an embodiment of the present invention, after the refrigeration equipment completes the refrigeration of the second target refrigeration cycle, at this time, the solenoid valve temperature sensor located at the outlet of the solenoid valve will detect the temperature at the outlet of the solenoid valve. The refrigeration sensor will also obtain the temperature of the refrigerating chamber after working for the second target refrigeration cycle. The freezing sensor will also obtain the temperature of the freezing chamber after working for the second target refrigeration cycle.

[0032] Step S130: Determine the state of the solenoid valve according to the first temperature, the second temperature, the third temperature, the fourth temperature, the fifth temperature, and the sixth temperature, where the state includes a normal state and an abnormal state.

[0033] Among them, the determination method of determining the state of the solenoid valve according to the first temperature, the second temperature, the third temperature, the fourth temperature, the fifth temperature, and the sixth temperature can be to determine the state of the solenoid valve according to the changes in the temperature at the outlet of the solenoid valve, the temperature of the refrigerating chamber, and the temperature of the freezing chamber between the first target refrigeration cycle and the second target refrigeration cycle. The determination method can also be to first obtain the temperature difference between the temperature at the outlet of the solenoid valve and the temperature of the freezing chamber after working for the first target refrigeration cycle, and the temperature difference between the temperature of the freezing chamber and the temperature of the refrigerating chamber. Then obtain the temperature difference between the temperature at the outlet of the solenoid valve and the temperature of the freezing chamber after working for the second target refrigeration cycle, and the temperature difference between the temperature of the freezing chamber and the temperature of the refrigerating chamber. Determine whether the state of the solenoid valve is in a normal state according to the changes between the temperature differences.

[0034] Furthermore, the abnormal state of the solenoid valve includes, but is not limited to, solenoid valve jamming, abnormal solenoid valve refrigeration, and solenoid valve damage and other abnormalities.

[0035] The solution provided by the present invention uses the temperatures at the solenoid valve outlet after two adjacent target refrigeration cycles, the temperature of the freezer compartment, and the temperature of the refrigerator compartment to jointly determine the state of the solenoid valve, avoiding the error caused by judging the state of the solenoid valve based on the temperature information after a single target refrigeration cycle, improving the accuracy of judging the state of the solenoid valve, and thus ensuring the normal refrigeration of the refrigeration equipment.

[0036] Please refer to Figure 2 , Figure 2 which is a schematic flow chart of the method for detecting the state of the solenoid valve provided by another embodiment of the present invention. The following will elaborate in detail on the Figure 2 shown process. The method for detecting the state of the solenoid valve may specifically include the following steps:

[0037] Step S201: After any refrigeration cycle of the refrigeration equipment operates, obtain the temperature at the solenoid valve outlet, the temperature of the freezer compartment, and the temperature of the refrigerator compartment through the solenoid valve temperature sensor, the freezer temperature sensor, and the refrigerator sensor respectively.

[0038] Step S202: If the temperature at the solenoid valve outlet, the temperature of the freezer compartment, and the temperature of the refrigerator compartment corresponding to this refrigeration cycle meet the preset temperature condition, then determine this refrigeration cycle as the target refrigeration cycle.

[0039] Among them, the preset temperature condition is pre-configured in the detection module, and the preset temperature condition can also be customized according to requirements. The preset temperature condition can be the magnitude relationship among the temperature at the solenoid valve outlet, the temperature of the freezer compartment, and the temperature of the refrigerator compartment. Exemplarily, the preset temperature condition can be that the temperature at the solenoid valve outlet is less than the temperature of the freezer compartment, and the temperature of the freezer compartment is less than the temperature of the refrigerator compartment. The preset temperature condition can also be a temperature difference threshold. Exemplarily, first obtain the temperature difference between the temperature at the solenoid valve outlet and the temperature of the freezer compartment and the temperature difference between the temperature of the freezer compartment and the temperature of the refrigerator compartment, and then determine whether the temperature difference meets the preset temperature condition according to the temperature difference and the corresponding temperature difference threshold.

[0040] In some embodiments, if the temperature at the solenoid valve outlet, the temperature of the freezer compartment, and the temperature of the refrigerator compartment after this refrigeration cycle meet the preset temperature condition, then determining this refrigeration cycle as the target refrigeration cycle includes: if after this refrigeration cycle, the temperature at the solenoid valve outlet is less than the temperature of the freezer compartment, and the temperature of the freezer compartment is less than the temperature of the refrigerator compartment, then determine that the temperature at the solenoid valve outlet, the temperature of the freezer compartment, and the temperature of the refrigerator compartment after this refrigeration cycle meet the preset temperature condition, and determine this refrigeration cycle as the target refrigeration cycle.

[0041] Since the solenoid valve is used to transfer cold air to each compartment of the refrigeration device in the refrigeration equipment, the temperature at the outlet of the solenoid valve should be the lowest. In the freezer, food needs to be frozen, so the temperature of the freezer is higher than the temperature at the outlet of the solenoid valve. In the refrigerator compartment, it is only used to keep food fresh at a low temperature. Therefore, the temperature of the refrigerator compartment should be greater than the temperature of the freezer, and the temperature of the refrigerator compartment is greater than the temperature at the outlet of the solenoid valve.

[0042] In an embodiment of the present invention, after this refrigeration cycle, if the temperature at the outlet of the solenoid valve is less than the temperature of the freezer compartment, and the temperature of the freezer compartment is less than the temperature of the refrigerator compartment, it is determined that this refrigeration cycle meets the preset temperature condition, and this refrigeration cycle is determined as the target refrigeration cycle.

[0043] Step S203: After the refrigeration equipment operates for the first target refrigeration cycle, respectively obtain the first temperature at the outlet of the solenoid valve, the second temperature of the freezer compartment, and the third temperature of the refrigerator compartment through the solenoid valve temperature sensor, the freezer temperature sensor, and the refrigerator sensor, where the first target refrigeration cycle is any target refrigeration cycle of the refrigeration equipment.

[0044] Step S204: After the refrigeration equipment operates for the second target refrigeration cycle, respectively obtain the fourth temperature at the outlet of the solenoid valve, the fifth temperature of the freezer compartment, and the sixth temperature of the refrigerator compartment through the solenoid valve temperature sensor, the freezer temperature sensor, and the refrigerator sensor, where the second target refrigeration cycle is the next target refrigeration cycle adjacent to the first target refrigeration cycle.

[0045] For the detailed description of steps S203 to S204, please refer to the detailed description of steps S110 to S120, which will not be elaborated here.

[0046] Step S205: According to the first temperature and the second temperature, calculate the temperature difference between the temperature of the freezer compartment and the temperature at the inlet of the solenoid valve after the first target refrigeration cycle, and use it as the first temperature difference.

[0047] Step S206: According to the second temperature and the third temperature, calculate the temperature difference between the temperature of the freezer compartment and the temperature of the refrigerator compartment after the first target refrigeration cycle, and use it as the second temperature difference.

[0048] Step S207: According to the fourth temperature and the fifth temperature, calculate the temperature difference between the temperature of the freezer compartment and the temperature at the inlet of the solenoid valve after the second target refrigeration cycle, and use it as the third temperature difference.

[0049] Step S208: According to the fifth temperature and the sixth temperature, calculate the temperature difference between the temperature of the freezer compartment and the temperature of the refrigerator compartment after the second target refrigeration cycle, and use it as the fourth temperature difference.

[0050] In the embodiments of the present invention, since the temperature gears of the freezer compartment and the refrigerator compartment are different, it is impossible to directly determine the state of the electromagnetic valve based on the temperature at the air outlet of the electromagnetic valve and the temperatures between the freezer compartment and the refrigerator compartment. At this time, calculate the temperature difference between the temperature at the air outlet of the electromagnetic valve after the target refrigeration cycle and the temperature of the freezer compartment, as well as the temperature difference between the temperature of the freezer compartment and the temperature of the refrigerator compartment, and then use the principle of heat absorption to determine the state of the electromagnetic valve, so as to ensure the normal refrigeration of the refrigeration equipment.

[0051] In some embodiments, the state of the electromagnetic valve can also be determined based on the temperature difference between the temperature at the air outlet of the electromagnetic valve and the temperature of the freezer compartment, and the temperature difference between the temperature at the air outlet of the electromagnetic valve and the temperature of the refrigerator compartment. Since the distances between the electromagnetic valve and the freezer compartment and the refrigerator compartment are different, therefore, calculate the temperature difference between the temperature at the air outlet of the electromagnetic valve and the temperature of the freezer compartment, and the temperature difference between the temperature at the air outlet of the electromagnetic valve and the temperature of the refrigerator compartment to determine whether the heat absorption of the freezer compartment and the refrigerator compartment is normal, and then determine the state of the electromagnetic valve.

[0052] Step S209: Determine the state of the electromagnetic valve according to the first temperature difference, the second temperature difference, the third temperature difference, and the fourth temperature difference.

[0053] Among them, the determination method for determining the state of the electromagnetic valve can be to compare the first temperature difference, the second temperature difference, the third temperature difference, and the fourth temperature difference with the corresponding temperature difference thresholds respectively. If the first temperature difference, the second temperature difference, the third temperature difference, and the fourth temperature difference all meet the corresponding temperature difference thresholds, then determine that the state of the electromagnetic valve is the normal state. On the contrary, if there is at least one temperature difference that does not meet the corresponding temperature difference threshold, then determine that the state of the electromagnetic valve is the abnormal state. The determination method can also be to determine the change value of the temperature difference according to two adjacent target refrigeration cycles, and then determine the state of the electromagnetic valve according to the change value of the temperature difference and the corresponding change threshold of the change value. The determination method of the state of the electromagnetic valve is not specifically limited herein.

[0054] In some embodiments, the step of determining the state of the electromagnetic valve according to the first temperature difference, the second temperature difference, the third temperature difference, and the fourth temperature difference includes: calculating the change value of the temperature difference between the temperature at the inlet of the electromagnetic valve and the temperature of the freezer compartment after two adjacent target refrigeration cycles according to the first temperature difference and the third temperature difference, as the first temperature change value. Calculate the change value of the temperature difference between the temperature of the freezer compartment and the temperature of the refrigerator compartment after two adjacent target refrigeration cycles according to the second temperature difference and the fourth temperature difference, as the second temperature change value. Determine the state of the electromagnetic valve according to the first temperature change value, the first temperature change threshold corresponding to the first temperature change value, the second temperature change value, and the second temperature change threshold corresponding to the second temperature change value, where the first temperature change threshold and the second temperature change threshold are pre-configured in the detection module.

[0055] Among them, according to the first temperature change value, the first temperature change threshold corresponding to the first temperature change value, the second temperature change value, and the second temperature change threshold corresponding to the second temperature change value, the determination method of the solenoid valve state can be that when the first temperature change value is less than or equal to the first temperature change threshold and the second temperature change value is less than or equal to the second temperature change threshold, the state of the solenoid valve is determined to be the normal state. Conversely, if at least one temperature change value is greater than the temperature change threshold corresponding to the temperature change value, the state of the solenoid valve is determined to be the abnormal state. The determination method can also be that when the first temperature change value is less than or equal to the first temperature change threshold and the second temperature change value is greater than the second temperature change threshold, the state of the solenoid valve is determined to be the normal state. Conversely, the state of the solenoid valve is determined to be the abnormal state. Here, the determination method of the solenoid valve state is not specifically limited.

[0056] In this embodiment, according to the temperature change value after two adjacent target cycles, it can be determined whether the temperature change is affected by the ambient temperature outside the refrigeration device. If the temperature change meets the temperature change threshold, it is determined that the temperature change is a normal temperature rise caused by the ambient temperature. If the temperature change does not meet the temperature change threshold, it is determined that it is caused by abnormal refrigeration inside the refrigeration device. At this time, the abnormal refrigeration may be caused by the solenoid valve being in an abnormal state.

[0057] Specifically, the steps of determining the state of the solenoid valve according to the first temperature change value, the first temperature change threshold corresponding to the first temperature change value, the second temperature change value, and the second temperature change threshold corresponding to the second temperature change value include: comparing the first temperature change value with the first temperature change threshold, and comparing the second temperature change value with the second temperature change threshold. If the first temperature change value is less than or equal to the first temperature change threshold and the second temperature change value is less than or equal to the second temperature change threshold, the state of the solenoid valve is determined to be the normal state. If at least one of the first temperature change value and the second temperature change value is greater than the change threshold corresponding to the change value, the temperatures of the solenoid valve inlet, the freezer compartment, and the refrigerator compartment after a preset number of target refrigeration cycles are obtained. The state of the solenoid valve is determined according to the temperatures of the solenoid valve inlet, the freezer compartment, and the refrigerator compartment after a preset number of target refrigeration cycles.

[0058] Among them, the determination method of the state of the electromagnetic valve according to the temperature of the electromagnetic valve inlet, the temperature of the freezer compartment, and the temperature of the refrigerator compartment after a preset number of target refrigeration cycles can be to first obtain the temperature change trends of the electromagnetic valve inlet, the temperature change trend of the freezer compartment, and the temperature change trend of the refrigerator compartment after a preset number of target refrigeration cycles. If the temperature change trends of the electromagnetic valve inlet, the temperature change trend of the freezer compartment, and the temperature change trend of the refrigerator compartment all meet the corresponding preset change trends, then determine that the state of the electromagnetic valve is the normal state. On the contrary, if there is at least one change trend that does not meet the corresponding preset change trend, then determine that the state of the electromagnetic valve is the abnormal state. The determination method can be to separately obtain the corresponding temperature change values after each target refrigeration cycle and the temperature change thresholds corresponding to the temperature change values. If the temperature change value after each target refrigeration cycle is less than the temperature change threshold, then determine that the state of the electromagnetic valve is normal. On the contrary, if there is at least one temperature change value after a target refrigeration cycle that is greater than or equal to the corresponding temperature change threshold, then determine that the state of the electromagnetic valve is the abnormal state. The determination method of the state of the electromagnetic valve is not specifically limited here.

[0059] In this embodiment, when the first temperature change value is less than or equal to the first temperature change threshold and the second temperature change value is less than or equal to the second temperature change threshold, it indicates that after two adjacent target refrigeration cycles, the change in the temperature difference between the temperature at the outlet of the electromagnetic valve and the temperature of the freezer compartment is less than or equal to the first temperature change threshold, and the change in the temperature difference between the temperature of the freezer compartment and the temperature of the refrigerator compartment is less than or equal to the second temperature change threshold. That is, after two adjacent target refrigeration cycles, due to the influence of the external environment on the refrigeration equipment, the freezer compartment and the refrigerator compartment warm up, resulting in a change in the temperature difference after two target refrigeration cycles. At this time, the state of the electromagnetic valve is normal. On the contrary, if there is at least one change value greater than the change threshold corresponding to the change value, it is impossible to determine whether the abnormal refrigeration is caused by the abnormal state of the electromagnetic valve or the failure of the refrigeration system of the refrigeration equipment. Further determination needs to be made based on the information corresponding to multiple target refrigeration cycles, so as to ensure the accuracy of the judgment of the state of the electromagnetic valve.

[0060] In some specific embodiments, the steps of determining the state of the electromagnetic valve according to the temperature of the electromagnetic valve inlet, the temperature of the freezer compartment, and the temperature of the refrigerator compartment after a preset number of target refrigeration cycles include: obtaining the temperature change trend of the electromagnetic valve inlet within a preset number of target refrigeration cycles as the first temperature change trend. Obtaining the temperature change trend of the freezer compartment within a preset number of target refrigeration cycles as the second temperature change trend. Obtaining the temperature change trend of the refrigerator compartment within a preset number of target refrigeration cycles as the third temperature change trend. Determining the state of the electromagnetic valve according to the first temperature change trend, the second temperature change trend, and the third temperature change trend.

[0061] Among them, according to the first temperature change trend, the second temperature change trend, and the third temperature change trend, the determination method of the solenoid valve state can be that if the first temperature change trend, the second temperature change trend, and the third temperature change trend are the same, then the state of the solenoid valve is determined to be the normal state; if the first temperature change trend, the second temperature change trend, and the third temperature change trend are different, then the state of the solenoid valve is determined to be the abnormal state. The determination method can also be that the first temperature change trend meets the corresponding preset temperature change trend, the second temperature change trend meets the corresponding preset temperature change trend, and the third temperature change trend meets the corresponding preset temperature change trend, then the state of the solenoid valve is determined to be the normal state. Anyway, if there is at least one temperature change trend that does not meet the corresponding preset temperature change trend, then the state of the solenoid valve is determined to be the abnormal state. The determination method is not specifically limited here.

[0062] Specifically, the steps of determining the state of the solenoid valve according to the first temperature change trend, the second temperature change trend, and the third temperature change trend include: if the first temperature change trend meets the first preset temperature change trend corresponding to the first temperature change trend, the second temperature change trend meets the second preset temperature change trend corresponding to the second temperature change trend, and the third temperature change trend meets the third preset temperature change trend corresponding to the third temperature change trend, then the state of the solenoid valve is determined to be the normal state, where the first preset temperature change trend, the second preset temperature change trend, and the third preset temperature change trend are pre-configured in the detection module. If there is at least one temperature change trend among the first temperature change trend, the second temperature change trend, and the third temperature change trend that does not meet the preset temperature change trend corresponding to this temperature change trend, then the state of the solenoid valve is determined to be the abnormal state.

[0063] Among them, the first preset temperature change trend can be a straight line, can also be an approximate parabola, or can also be a broken line. The first preset temperature change trend is not specifically limited here. The second preset temperature change trend and the third preset temperature change trend can be the same as or different from the first preset temperature change trend, and are not specifically limited here. Preferably, the first preset temperature change trend is a straight line, and the second preset temperature change trend and the third preset temperature change trend are approximate parabolas.

[0064] In the embodiment of the present invention, when the first temperature change trend is a straight line, and the second temperature change trend and the third temperature change trend are approximate parabolas, then the state of the solenoid valve is determined to be the normal state; when there is at least one temperature change trend among the first temperature change trend, the second temperature change trend, and the third temperature change trend that does not meet the preset temperature change trend corresponding to this temperature change trend, then the state of the solenoid valve is determined to be the abnormal state.

[0065] In the specific implementation process, take a multi-system refrigerator as the refrigeration device, with an ambient temperature of 25°C, a freezing temperature of -18°C in the freezer compartment, and a refrigerating temperature of 5°C in the refrigerator compartment as an example.

[0066] After the first target refrigeration cycle, at this time, the solenoid valve temperature sensor detects that the temperature X1 at the inlet of the solenoid valve is -20°C, the freezer temperature sensor detects that the temperature X2 in the freezer compartment is -18°C, the refrigerator temperature sensor detects that the temperature X3 in the refrigerator compartment is 5°C, the temperature difference Y1 between X1 and X2 is 2°C, and the temperature difference Y2 between X3 and X2 is 23°C;

[0067] After the second target refrigeration cycle, at this time, the solenoid valve temperature sensor detects that the temperature X4 at the inlet of the solenoid valve is -20.5°C, the freezer temperature sensor detects that the temperature X5 in the freezer compartment is -19°C, the refrigerator temperature sensor detects that the temperature X6 in the refrigerator compartment is 4.3°C, the temperature difference Y3 between X5 and X4 is 1.5°C, and the temperature difference Y4 between X6 and X5 is 23.3°C;

[0068] At this time, the change value of the temperature difference between Y1 and Y3 is calculated to be 0.5°C, and the change value of the temperature difference between Y2 and Y4 is 0.3°C. The preset temperature change threshold is 0.5°C. At this time, both are less than or equal to the preset temperature change threshold, then the state of the solenoid valve is considered to be in a normal state. If the change value of the temperature difference between Y1 and Y3 or the change value of the temperature difference between Y2 and Y4 is greater than 0.5°C, then the temperature after a preset number of target refrigeration cycles needs to be recorded, and it is observed whether the temperature change trend satisfies the corresponding curve. If it satisfies, the state of the solenoid valve is judged to be in a normal state, otherwise the state of the solenoid valve is in an abnormal state.

[0069] The solution provided by the present invention uses the temperature difference between the temperature at the outlet of the solenoid valve and the temperature in the freezer compartment and the temperature difference between the temperature in the freezer compartment and the temperature in the refrigerator compartment after two adjacent target refrigeration cycles to jointly determine the state of the solenoid valve, avoiding the error caused by judging the state of the solenoid valve based on the temperature information after a single target refrigeration cycle, improving the accuracy of judging the state of the solenoid valve, and thus ensuring the normal refrigeration of the refrigeration device.

[0070] Based on the same inventive concept, please refer to Figure 3 , Figure 3Schematic diagram of the functional modules of a solenoid valve state detection device 100 provided in this embodiment. In this embodiment, the functional modules of the solenoid valve state detection device 100 can be divided according to the above method embodiment. For example, each functional module can be corresponding to each function, or two or more functions can be integrated into one processing module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiments of the present invention is illustrative, only a logical function division, and there may be other division methods in actual implementation. For example, in the case of dividing each functional module corresponding to each function, Figure 3 The shown solenoid valve state detection device 100 is only a schematic diagram of a device. Among them, the detection module applied to a refrigeration device, the refrigeration device further includes a freezer compartment, a refrigerating compartment, a solenoid valve, a solenoid valve temperature sensor, a freezer temperature sensor, and a refrigerating temperature sensor. The solenoid valve temperature sensor is arranged at the air inlet of the solenoid valve, and the solenoid valve temperature sensor is used to detect the temperature of the air outlet of the solenoid valve. The freezer temperature sensor is arranged inside the freezer compartment, and the freezer temperature sensor is used to detect the temperature of the freezer compartment. The refrigerating sensor is arranged inside the refrigerating compartment, and the refrigerating sensor is used to detect the temperature of the refrigerating compartment. The detection module is electrically connected to the solenoid valve temperature sensor, the freezer temperature sensor, and the refrigerating temperature sensor. The functions of each functional module of the solenoid valve state detection device will be elaborated in detail below.

[0071] The first acquisition unit 110. In this embodiment, the first acquisition unit 110 can be used to execute Figure 1 The step S110 shown. For the specific description of the first acquisition unit 110, reference can be made to the description of step S110.

[0072] The second acquisition unit 120. In this embodiment, the second acquisition unit 120 can be used to execute Figure 1 The step S120 shown. For the specific description of the second acquisition unit 120, reference can be made to the description of step S120.

[0073] The state determination unit 130. In this embodiment, the state determination unit 130 can be used to execute Figure 1 The step S130 shown. For the specific description of the state determination unit 130, reference can be made to the description of step S130.

[0074] Furthermore, the embodiments of the present invention also provide a computer storage medium storing an executable program, and the executable program can be used to implement the solenoid valve state detection method provided in the above method embodiment when executed.

[0075] Of course, for the computer storage medium containing an executable program provided by an embodiment of the present invention, the executable program is not limited to the method operations as above, and can also execute the related operations in the solenoid valve state detection method provided by any embodiment of the present invention.

[0076] In summary, the present invention provides a solenoid valve state detection method, device and refrigeration equipment. The solenoid valve state detection method is applied to a computer device in a solenoid valve state detection system. The temperature at the solenoid valve outlet, the temperature of the freezer compartment, and the temperature of the refrigerator compartment after two adjacent target refrigeration cycles are used together to determine the state of the solenoid valve, avoiding the error caused by judging the state of the solenoid valve based on the temperature information after a single target refrigeration cycle, improving the accuracy of the solenoid valve state judgment, and thus ensuring the normal refrigeration of the refrigeration equipment.

[0077] Embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of methods, apparatuses, and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, and the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate a device for implementing the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0078] Although the present invention has been described in conjunction with various embodiments herein, however, in the process of implementing the claimed invention, those skilled in the art can understand and implement other changes of the disclosed embodiments by viewing the drawings, the disclosed content, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude a plurality. A single processor or other unit can implement several functions recited in the claims. Certain measures are recited in mutually different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0079] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for detecting the state of a solenoid valve, characterized in that: A detection module applied to a refrigeration device, the refrigeration device further comprising a freezing chamber, a refrigerating chamber, a solenoid valve, a solenoid valve temperature sensor, a freezing temperature sensor and a refrigerating temperature sensor, the solenoid valve temperature sensor being arranged at an air inlet of the solenoid valve, the solenoid valve temperature sensor being used to detect the temperature of an air outlet of the solenoid valve, the freezing temperature sensor being arranged inside the freezing chamber, the freezing temperature sensor being used to detect the temperature of the freezing chamber, the refrigerating sensor being arranged inside the refrigerating chamber, the refrigerating sensor being used to detect the temperature of the refrigerating chamber, the detection module being electrically connected to the solenoid valve temperature sensor, the freezing temperature sensor and the refrigerating temperature sensor, the method comprising: After the refrigeration device operates for a first target refrigeration cycle, a first temperature of the solenoid valve air outlet, a second temperature of the freezing chamber, and a third temperature of the refrigeration chamber are respectively obtained through the solenoid valve temperature sensor, the freezing temperature sensor, and the refrigeration sensor, wherein the first target refrigeration cycle is any target refrigeration cycle of the refrigeration device; After the refrigeration device operates for a second target refrigeration cycle, a fourth temperature at an air outlet of the solenoid valve, a fifth temperature of the freezing chamber, and a sixth temperature of the refrigerating chamber are respectively obtained through the solenoid valve temperature sensor, the freezing temperature sensor, and the refrigerating sensor, and the second target refrigeration cycle is a next target refrigeration cycle adjacent to the first target refrigeration cycle; The state of the solenoid valve is determined according to the first temperature, the second temperature, the third temperature, the fourth temperature, the fifth temperature and the sixth temperature, wherein the state includes a normal state and an abnormal state.

2. The state detection method of the solenoid valve according to claim 1, characterized in that: The step of determining the state of the solenoid valve according to the first temperature, the second temperature, the third temperature, the fourth temperature, the fifth temperature and the sixth temperature comprises: calculating, according to the first temperature and the second temperature, a temperature difference between the temperature of the freezing chamber and the temperature of the air inlet of the solenoid valve after the first target refrigeration cycle as a first temperature difference; calculating, according to the second temperature and the third temperature, a temperature difference between the temperature of the freezing chamber and the temperature of the refrigerating chamber after the first target refrigeration cycle as a second temperature difference; calculating, according to the fourth temperature and the fifth temperature, a temperature difference between the temperature of the freezing chamber and the temperature of the air inlet of the solenoid valve after the second target refrigeration cycle as a third temperature difference; calculating, according to the fifth temperature and the sixth temperature, a temperature difference between the temperature of the freezing chamber and the temperature of the refrigerating chamber after the second target refrigeration cycle as a fourth temperature difference; The state of the solenoid valve is determined according to the first temperature difference, the second temperature difference, the third temperature difference and the fourth temperature difference.

3. The state detection method of the solenoid valve according to claim 2, characterized in that: The step of determining the state of the solenoid valve according to the first temperature difference, the second temperature difference, the third temperature difference and the fourth temperature difference comprises: Calculating, according to the first temperature difference and the third temperature difference, a change value of the temperature difference between the temperature of the air inlet of the solenoid valve and the temperature of the freezing chamber after two adjacent target refrigeration cycles as a first temperature change value; Calculating, according to the second temperature difference and the fourth temperature difference, a change value of the temperature difference between the temperature of the freezing chamber and the temperature of the refrigerating chamber after two adjacent target refrigeration cycles as a second temperature change value; The state of the solenoid valve is determined based on the first temperature change value, the first temperature change threshold corresponding to the first temperature change value, the second temperature change value, and the second temperature change threshold corresponding to the second temperature change value, wherein the first temperature change threshold and the second temperature change threshold are pre-configured in the detection module.

4. The state detection method of the solenoid valve according to claim 3, characterized in that: The step of determining the state of the solenoid valve according to the first temperature change value, the first temperature change threshold corresponding to the first temperature change value, the second temperature change value, and the second temperature change threshold corresponding to the second temperature change value comprises: comparing the first temperature change value with a first temperature change threshold, and comparing the second temperature change value with a second temperature change threshold; If the first temperature change value is less than or equal to the first temperature change threshold, and the second temperature change value is less than or equal to the second temperature change threshold, determining that the state of the solenoid valve is a normal state; If at least one of the first temperature change value and the second temperature change value is greater than a change threshold corresponding to the change value, the temperature of the solenoid valve air inlet, the temperature of the freezer compartment, and the temperature of the refrigerator compartment after a preset number of target refrigeration cycles are obtained; The state of the solenoid valve is determined according to the temperature of the air inlet of the solenoid valve, the temperature of the freezing chamber, and the temperature of the refrigerating chamber after the preset number of target refrigeration cycles.

5. The state detection method of the solenoid valve according to claim 4, characterized in that: The step of determining the state of the solenoid valve according to the temperature of the air inlet of the solenoid valve, the temperature of the freezing chamber, and the temperature of the refrigerating chamber after the preset number of target refrigeration cycles comprises: Acquire a change trend of the temperature of the air inlet of the solenoid valve within the preset number of target refrigeration cycles as a first temperature change trend; Acquire a change trend of the temperature of the freezing chamber within the preset number of target refrigeration cycles as a second temperature change trend; Acquire a change trend of the temperature of the refrigerating chamber within the preset number of target refrigeration cycles as a third temperature change trend; The state of the solenoid valve is determined according to the first temperature change trend, the second temperature change trend and the third temperature change trend.

6. The state detection method of the solenoid valve according to claim 5, characterized in that: The step of determining the state of the solenoid valve according to the first temperature change trend, the second temperature change trend and the third temperature change trend comprises: If the first temperature change trend satisfies a first preset temperature change trend corresponding to the first temperature change trend, the second temperature change trend satisfies a second preset temperature change trend corresponding to the second temperature change trend, and the third temperature change trend satisfies a third preset temperature change trend corresponding to the third temperature change trend, then it is determined that the state of the solenoid valve is a normal state, wherein the first preset temperature change trend, the second preset temperature change trend and the third preset temperature change trend are pre-configured in the detection module; If at least one of the first temperature change trend, the second temperature change trend, and the third temperature change trend does not satisfy a preset temperature change trend corresponding to the temperature change trend, it is determined that the state of the solenoid valve is an abnormal state.

7. The state detection method of the solenoid valve according to claim 1, characterized in that: Before the step of respectively acquiring the first temperature of the solenoid valve outlet, the second temperature of the freezing chamber, and the third temperature of the refrigerating chamber through the solenoid valve temperature sensor, the freezing temperature sensor, and the refrigerating sensor after the refrigerating device operates in the first target refrigerating cycle, the method further includes: After the refrigeration equipment works in any refrigeration cycle, the temperature of the solenoid valve outlet, the temperature of the freezing chamber and the temperature of the refrigerating chamber are respectively obtained through the solenoid valve temperature sensor, the freezing temperature sensor and the refrigerating sensor; If the temperature of the solenoid valve outlet, the temperature of the freezer compartment and the temperature of the refrigerator compartment corresponding to the refrigeration cycle meet preset temperature conditions, the refrigeration cycle is determined as a target refrigeration cycle, wherein the preset temperature conditions are pre-configured in the detection module.

8. The state detection method of the solenoid valve according to claim 7, characterized in that: If the temperature of the air outlet of the solenoid valve, the temperature of the freezing chamber, and the temperature of the refrigerating chamber after the refrigeration cycle meet the preset temperature conditions, then determining the refrigeration cycle as the target refrigeration cycle includes: If after the refrigeration cycle, the temperature of the solenoid valve outlet is lower than the temperature of the freezer compartment, and the temperature of the freezer compartment is lower than the temperature of the refrigerator compartment, it is determined that the temperature of the solenoid valve outlet, the temperature of the freezer compartment and the temperature of the refrigerator compartment after the refrigeration cycle meet the preset temperature conditions, and the refrigeration cycle is determined as the target refrigeration cycle.

9. A state detection device for a solenoid valve, characterized in that: A detection module applied to a refrigeration device, the refrigeration device further comprising a freezing chamber, a refrigerating chamber, a solenoid valve, a solenoid valve temperature sensor, a freezing temperature sensor and a refrigerating temperature sensor, the solenoid valve temperature sensor being arranged at the air inlet of the solenoid valve, the solenoid valve temperature sensor being used to detect the temperature of the air outlet of the solenoid valve, the freezing temperature sensor being arranged inside the freezing chamber, the freezing temperature sensor being used to detect the temperature of the freezing chamber, the refrigerating sensor being arranged inside the refrigerating chamber, the refrigerating sensor being used to detect the temperature of the refrigerating chamber, the detection module being electrically connected to the solenoid valve temperature sensor, the freezing temperature sensor and the refrigerating temperature sensor, the device comprising: a first acquisition unit, configured to acquire a first temperature of an air outlet of the solenoid valve, a second temperature of the freezing chamber, and a third temperature of the refrigerating chamber after the refrigeration device operates for a first target refrigeration cycle, wherein the first target refrigeration cycle is any target refrigeration cycle of the refrigeration device; a second acquisition unit, configured to acquire a fourth temperature at an air outlet of the solenoid valve, a fifth temperature of the freezing chamber, and a sixth temperature of the refrigerating chamber after the refrigeration device operates for a second target refrigeration cycle, wherein the second target refrigeration cycle is a next target refrigeration cycle adjacent to the first target refrigeration cycle; A state determination unit is used to determine the state of the solenoid valve according to the first temperature, the second temperature, the third temperature, the fourth temperature, the fifth temperature and the sixth temperature, wherein the state includes a normal state and an abnormal state.

10. A refrigeration device, characterized in that: The refrigeration equipment comprises: a detection module, a freezing chamber, a refrigerating chamber, a solenoid valve, a solenoid valve temperature sensor, a freezing temperature sensor and a refrigerating temperature sensor; The solenoid valve temperature sensor is arranged at the air inlet of the solenoid valve, and is used to detect the temperature of the air inlet of the solenoid valve; The freezing temperature sensor is arranged inside the freezing chamber and is used to detect the temperature of the freezing chamber; The refrigeration sensor is arranged inside the refrigeration chamber and is used to detect the temperature of the refrigeration chamber; The detection module is electrically connected to the solenoid valve temperature sensor, the freezing temperature sensor and the refrigeration temperature sensor, and the detection module is used to execute the method according to any one of claims 1 to 8.

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