Drainage heating piece control method, computer storage medium and refrigeration equipment

Abstract

The invention provides a drainage heating piece control method, a computer storage medium and refrigeration equipment, and the drainage heating piece control method comprises the steps that when it is detected that an evaporator defrosts, the temperature in an evaporator chamber where the evaporator is installed is obtained; the rising speed of the indoor temperature of the evaporator is calculated; according to the rising speed, obtaining the starting rate K of a drainage heating piece of a drainage pipe of the evaporator chamber; obtaining an operation cycle T of the drainage heating element; and the drainage heating piece is controlled to circularly run according to the running cycle T, and in each running cycle T, the drainage heating piece is turned on for K * T and then turned off.

Description

Technical Field

[0001] The present invention relates to the field of refrigeration, and in particular to a drainage control method, a computer storage medium and a refrigeration device. Background Art

[0002] Current refrigeration equipment features a water pan inside the evaporator chamber to collect defrost water, and a drain pipe to drain the water. However, the drain pipe's connection to the evaporator chamber is susceptible to freezing due to the low temperatures inside the evaporator chamber. While a drain heater is typically installed in the drain pipe, controlling it is currently complex. Summary of the Invention

[0003] The object of the present invention is to provide a drainage heating element control method for solving the above-mentioned problems.

[0004] To achieve one of the above-mentioned objectives, the present invention provides a method for controlling a drainage heating element, comprising:

[0005] When it is detected that the evaporator is defrosting, obtaining the temperature of the evaporator room in which the evaporator is installed;

[0006] Calculating the rising rate of the indoor temperature of the evaporator;

[0007] Obtaining a start-up rate K of a drainage heating element of the drainage pipe of the evaporator compartment according to the rising speed;

[0008] Obtaining an operating cycle T of the drainage heating element;

[0009] The drainage heating element is controlled to operate cyclically in the operation cycle T. In each operation cycle T, the drainage heating element is turned on for K*T and then turned off.

[0010] As a further improvement of one embodiment of the present invention, the present invention further includes:

[0011] The operating rate K of the drainage heating element is positively correlated with the rising speed of the indoor temperature of the evaporator.

[0012] As a further improvement of one embodiment of the present invention, the present invention further includes:

[0013] When it is detected that the evaporator starts defrosting after a first preset time period, the drainage heating element is controlled to be turned on.

[0014] As a further improvement of one embodiment of the present invention, the present invention further includes:

[0015] When a defrost signal of the evaporator is received, the drain heating element is controlled to be turned on.

[0016] As a further improvement of one embodiment of the present invention, the present invention further includes:

[0017] When the evaporator defrost completion signal is received, the drainage heating element is controlled to operate for a second preset time period and then turned off.

[0018] As a further improvement of one embodiment of the present invention, the present invention further includes:

[0019] The evaporator includes an ice-making evaporator corresponding to the ice-making chamber.

[0020] To achieve one of the above-mentioned objects of the invention, the present invention provides a computer storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps in the drainage heating element control method described in any of the above-mentioned embodiments.

[0021] To achieve one of the above-mentioned objects of the invention, the present invention provides a refrigeration device, comprising a box body, wherein a storage compartment and an evaporator compartment are formed in the box body, an evaporator and a water collecting pan placed below the evaporator are installed in the evaporator compartment, the box body also includes a drain pipe connected to the drain outlet of the water collecting pan, a defrost heating element and a defrost temperature sensor are installed in the evaporator compartment, a drainage heating element is provided at the drain pipe, and further includes a memory and a processor, the memory stores a computer program that can be run on the processor, and when the processor executes the computer program, the steps in the drainage heating element control method described in any of the above-mentioned embodiments are implemented.

[0022] As a further improvement of one embodiment of the present invention, it further includes an ice-making chamber, the evaporator chamber includes an ice-making evaporator chamber, the evaporator includes an ice-making evaporator installed in the ice-making evaporator chamber, and the ice-making evaporator chamber is in cold air communication with the ice-making chamber.

[0023] As a further improvement of one embodiment of the present invention, the storage compartment includes a freezing chamber, the ice-making chamber is arranged in the freezing chamber, and the drain pipe is partially buried in the foam layer of the freezing chamber.

[0024] The control method of the drainage heating element provided by the present invention controls the opening time of the drainage heating element according to the temperature rise rate of the evaporator chamber. Under the premise of ensuring that the drain pipe will not be frozen, it can reduce energy consumption and increase the service life of the drainage heating element. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 1 is a schematic structural diagram of a refrigeration device according to an embodiment of the present invention;

[0026] Figure 2 This is a flow chart of a method for controlling a drainage heating element according to an embodiment of the present invention;

[0027] Figure 34 is a system schematic diagram of a refrigeration device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The present invention will be described in detail below with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional changes made by those skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0029] See also Figure 1 The present invention provides a refrigeration device 100, which may be a refrigerator. Refrigeration device 100 may include a housing 110, which may include a storage compartment. The storage compartment may include a freezer compartment 112. Of course, the storage compartment may also include a refrigerator compartment 111 and a temperature-changing chamber. Refrigeration device 100 may include a door 120 for opening and closing the storage compartment. Door 120 may include a freezer door for opening and closing the freezer compartment.

[0030] An ice maker and an ice storage box may be installed in the ice making chamber 113. The refrigeration device 100 may also include a water injection assembly, which may include a water injection pipe that partially extends into the ice making chamber to supply water to the ice tray. The water injection assembly may automatically supply water to the ice maker through an external water source.

[0031] In this embodiment, the refrigeration device 100 further includes a refrigeration system. The refrigeration system may include a compressor 210 and an evaporator 230. The evaporator 230 may include a refrigeration evaporator 231, an ice-making evaporator 251, and a freezing evaporator 241. The refrigeration device 100 may have a compressor compartment, and the compressor 210 may be installed in the compressor compartment. The refrigeration device 100 may also include an ice-making evaporator chamber and a freezing evaporator chamber. The ice-making evaporator 251 is disposed in the ice-making evaporator chamber, and the freezing evaporator 241 is disposed in the freezing evaporator chamber. The ice-making evaporator chamber may be in cold air communication with the ice-making chamber 113, and the freezing evaporator chamber may be in cold air communication with the freezing chamber 112.

[0032] In this embodiment, part of the refrigerant from the compressor 210 flows through the refrigeration evaporator 230 and then flows into the freezing evaporator 241 , and part of the refrigerant flows directly through the freezing evaporator 241 .

[0033] Specifically, the refrigerant flowing out of the compressor 210 passes through the condenser and is split through a one-inlet and multiple-outlet solenoid valve. A part of it directly enters the freezing evaporator 241 through the freezing capillary tube and then flows back to the compressor 210. A part of it passes through the ice-making capillary tube and the ice-making evaporator 251 and then flows through the freezing evaporator 241 and returns to the compressor 210.

[0034] A defrost heater and a water tray 252 may be installed in the evaporator chamber. When the evaporator 230 needs to be defrosted, the defrost heater can be activated to heat the frost on the surface of the evaporator 230, melting the frost into water that flows into the water tray 252. The water tray 252 may have a drain port. The refrigeration unit may also include a drain pipe 253 connected to the evaporator chamber. The water outlet of the water tray 252 can be inserted into the drain pipe 253, allowing the water in the water tray 252 to be drained through the drain pipe 253.

[0035] Since the drain outlet of the drain pipe 253 communicating with the evaporator chamber is easily frozen and affects drainage, a drain heating element may be provided at the drain pipe 253 .

[0036] An embodiment of the present invention provides a method for controlling a drainage heating element, which can be used in the above-mentioned refrigeration device 100 .

[0037] See also Figure 2 , the drainage heating element control method includes:

[0038] When it is detected that the evaporator 230 is defrosted, the temperature of the evaporator room where the evaporator 230 is installed is obtained;

[0039] Calculating the rising rate of the indoor temperature of the evaporator;

[0040] Obtaining a start-up rate K of the drainage heating element of the drainage pipe 253 of the evaporator chamber according to the rising speed;

[0041] Obtaining an operating cycle T of the drainage heating element;

[0042] The drainage heating element is controlled to operate cyclically in the operation cycle T. In each operation cycle T, the drainage heating element is turned on for K*T and then turned off.

[0043] In this embodiment, the evaporator 230 may be any one of a freezing evaporator 241, an ice-making evaporator 251, and a temperature-variable evaporator 230. A defrosting temperature sensor may be installed in the evaporator chamber to detect the temperature in the evaporator chamber.

[0044] During the defrosting process of the evaporator 230, the temperature inside the evaporator chamber rises because the defrost heater is turned on and the compressor stops supplying refrigerant to the evaporator 230. The rate of temperature rise inside the evaporator chamber is related to the degree of frost on the surface of the evaporator 230. The more severe the frost on the surface of the evaporator 230, the slower the temperature rise inside the evaporator chamber due to the continuous cooling energy released by the frost during the defrosting process. In other words, the slower the temperature rise rate inside the evaporator chamber, the less frost on the surface of the evaporator 230, the faster the temperature rise inside the evaporator chamber during the defrosting process, that is, the faster the temperature rise rate inside the evaporator chamber.

[0045] The severity of the frosting of the evaporator 230 can be determined based on the temperature rise rate in the evaporator chamber, so that the opening time of the drainage heating element can be controlled, thereby reducing energy consumption and increasing the speed of defrosting and drainage.

[0046] In this embodiment, the drainage heating element operates in a cycle T. In each operation cycle T, the drainage heating element is turned on K*T and then turned off. It can be understood that the drainage heating element turns on K*T and then turns off TK*T, then repeatedly turns on K*T and then turns off TK*T, and operates in this cycle.

[0047] In this way, during the defrosting process, it can be ensured that the drain pipe 253 will not freeze, and the continuous operation of the drain heating element can be avoided, which can reduce energy consumption and extend the service life of the drain heating element.

[0048] Furthermore, in one embodiment of the present invention, the operating rate K of the drainage heating element is positively correlated with the rising speed of the indoor temperature of the evaporator.

[0049] In this embodiment, a correspondence table between the drain heating element operation rate and the evaporator indoor temperature rising rate can be stored in the memory, and the corresponding operation rate K can be directly matched according to the detected evaporator indoor temperature rising rate.

[0050] Of course, other algorithms may also be used to obtain the startup rate K of the drainage heating element, for example, it may be calculated according to a predetermined formula or algorithm.

[0051] In this embodiment, the greater the temperature rise rate in the evaporator chamber, the greater the corresponding startup rate of the drainage heating element can be, and within an operating cycle T, the longer the drainage heating element is turned on.

[0052] When the indoor temperature of the evaporator rises faster, there is less frost freezing, but the frost melts faster and the drainage volume is also larger. Therefore, at this time, in order to ensure smooth defrosting and drainage, the startup rate K of the drainage heating element can be increased and its startup time within an operating cycle T can be extended.

[0053] When the indoor temperature of the evaporator rises slowly, there is more frost freezing, the frost melting speed is slow, and the drainage volume is also small. Therefore, at this time, the start-up rate K of the drainage heating element can be reduced, shortening its start-up time within an operating cycle T, and reducing the energy consumption of the drainage heating element.

[0054] Furthermore, in one embodiment of the present invention, the drainage heating element control method further includes:

[0055] When it is detected that the evaporator 230 starts to defrost after the first preset time period, the drain heating element is controlled to be turned on.

[0056] In this embodiment, when the evaporator 230 is defrosted after the first preset time is detected, the drainage heating element is turned on in advance to heat the drain pipe 253, so that the frost in the drain pipe 253 melts in advance, thereby improving the subsequent defrosting efficiency of the evaporator 230.

[0057] In another embodiment of the present invention, the control method of the drainage heating element further includes:

[0058] When a defrost signal of the evaporator 230 is received, the drain heating element is controlled to be turned on.

[0059] In this embodiment, when the defrost signal of the evaporator 230 is received, the defrost heating element and the drain heating element can be controlled to be turned on synchronously.

[0060] During the process of the defrost heating element heating the evaporator 230, the drain heating element is also heating the drain pipe 253. When there is less frost on the surface of the evaporator 230 and the defrost is faster, the drain heating element is turned on for a longer time and the possibility of the drain pipe 253 freezing is also lower, which will not affect the defrost drainage.

[0061] Furthermore, in one embodiment of the present invention, the control method of the drainage heating element further includes:

[0062] When the defrosting end signal of the evaporator 230 is received, the drainage heating element is controlled to run for a second preset time and then turned off.

[0063] In this embodiment, after the evaporator 230 has finished defrosting, a large amount of residual water remains in the drain pipe 253 and the water receiving pan 252, making freezing more likely. Therefore, after the evaporator 230 has finished defrosting, the drain heating element may not be immediately turned off. Instead, the drain heating element may be kept running for a second preset duration to ensure that the residual water in the water receiving pan 252 and drain pipe 253 is further drained, thereby reducing the risk of subsequent freezing and preventing severe freezing. The second preset duration may be the same as the first preset duration described above.

[0064] Furthermore, in one embodiment of the present invention, the evaporator 230 includes an ice-making evaporator 251 corresponding to the ice-making chamber.

[0065] In a specific embodiment of the present invention, an ice-making chamber is located within the freezer compartment. An insulating partition may be provided between the ice-making chamber and the freezer compartment, separating the ice-making chamber. An ice-making evaporator chamber is located within the ice-making chamber. An ice-making evaporator 251 and a water tray 252 are mounted within the ice-making evaporator chamber. The water tray 252 is provided with a drain outlet. A drain pipe 253 may be provided on the rear wall of the ice-making chamber. The drain outlet of the water tray 252 may extend into the drain pipe 253. The drain pipe 253 may be partially buried within the foam layer of the freezer compartment.

[0066] A defrost heater and a defrost temperature sensor may also be provided in the ice making evaporator chamber. When it is detected that the ice making evaporator 251 needs to be defrosted, the defrost heater is activated to heat the ice making evaporator 251. Frost on the surface of the ice making evaporator 251 melts into water and flows into the water receiving tray 252. The water flows through the drain port of the water receiving tray 252 to the drain pipe 253.

[0067] See also Figure 3 One embodiment of the present invention further provides a refrigeration device 100, comprising a memory 202 and a processor 201, wherein the memory 202 and the processor 201 are communicatively connected via a communication bus 204. The memory 202 stores a computer program executable by the processor 201. When the processor 201 executes the computer program, the steps of the drainage heating element control method described in the above embodiment are implemented. The refrigeration device 100 also includes a communication interface 203 connected to the communication bus 204 for communicating with other devices within the refrigeration device 100.

[0068] An embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the drainage heating element control method in the above embodiment are implemented.

[0069] To sum up, the control method of the drainage heating element provided by the present invention controls the opening time of the drainage heating element according to the temperature rise rate of the evaporator chamber 230. While ensuring that the drain pipe 253 will not be frozen, it can reduce energy consumption and increase the service life of the drainage heating element.

[0070] It should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation method can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0071] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A drainage heating element control method, characterized in that: include: When it is detected that the evaporator is defrosting, obtaining the temperature of the evaporator room in which the evaporator is installed; Calculating the rising rate of the indoor temperature of the evaporator; Obtaining a start-up rate K of a drainage heating element of the drainage pipe of the evaporator compartment according to the rising speed; Obtaining an operating cycle T of the drainage heating element; The drainage heating element is controlled to operate cyclically in the operation cycle T. In each operation cycle T, the drainage heating element is turned on for K*T and then turned off.

2. The drainage heating element control method according to claim 1, characterized in that: Also includes: The operating rate K of the drainage heating element is positively correlated with the rising speed of the indoor temperature of the evaporator.

3. The drainage heating element control method according to claim 1, characterized in that: Also includes: When it is detected that the evaporator starts defrosting after a first preset time period, the drainage heating element is controlled to be turned on.

4. The drainage heating element control method according to claim 1, characterized in that: Also includes: When a defrost signal of the evaporator is received, the drain heating element is controlled to be turned on.

5. The drainage heating element control method according to claim 1, characterized in that: Also includes: When the evaporator defrost completion signal is received, the drainage heating element is controlled to operate for a second preset time period and then turned off.

6. The drainage heating element control method according to claim 1, characterized in that: The evaporator includes an ice-making evaporator corresponding to the ice-making chamber.

7. A computer storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps in the drainage heating element control method according to any one of claims 1 to 6 are implemented.

8. A refrigeration device, comprising a housing, wherein a storage compartment and an evaporator compartment are formed within the housing, an evaporator and a water receiving pan disposed below the evaporator are installed within the evaporator compartment, the housing further comprising a drain pipe connected to a drain outlet of the water receiving pan, a defrost heater and a defrost temperature sensor are installed within the evaporator compartment, and a drain heater is provided on the drain pipe, characterized in that: It also includes a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and when the processor executes the computer program, the steps in the drainage heating element control method according to any one of claims 1 to 6 are implemented.

9. The refrigeration equipment according to claim 8, characterized in that The utility model further comprises an ice-making chamber, the evaporator chamber comprises an ice-making evaporator chamber, the evaporator comprises an ice-making evaporator installed in the ice-making evaporator chamber, and the ice-making evaporator chamber is in cold air communication with the ice-making chamber.

10. The refrigeration equipment according to claim 9, characterized in that: The storage compartment includes a freezing chamber, the ice-making chamber is arranged in the freezing chamber, and the drain pipe is partially buried in the foaming layer of the freezing chamber.

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