Control method for preventing condensation of refrigerator and refrigerator

Abstract

The invention particularly relates to a control method for preventing condensation of a refrigerator and the refrigerator. The anti-condensation control method of the refrigerator comprises the steps that when the running state of the refrigerator is set, the initial opening rate of a heater of a beam structure is set to be K < initial >, and K < initial > is larger than or equal to Kmin; obtaining the surface temperature T surface of the beam structure when the opening rate is K, and obtaining the temperature T dew point of the environment dew point according to the real-time environment temperature and humidity; when the T surface and the T dew point n meet the condition that T surface = T dew point n + T threshold, setting the opening rate of the heater as K initial; when the T surface and the T dew point n meet the condition that the T surface is smaller than the T dew point n + T threshold value, the opening rate of the heater is set to be sequentially increased by delta n unit heating time t unit delta, and when the T surface and the T dew point n meet the condition that the T surface is larger than the T dew point n + T threshold value, the opening rate of the heater is set to be sequentially subtracted by delta n unit heating time t unit delta. The refrigerator has the advantages of being energy-saving, efficient, good in refrigerating and fresh-keeping effect, good in anti-condensation effect and tidy and clean in the refrigerator.

Description

Technical Field

[0001] The invention relates to a field, in particular to a control method for preventing condensation in a refrigerator and a refrigerator. Background Art

[0002] At present, the refrigerator compartment has two doors, and the door opening method is biparting. Generally, a vertical beam is arranged in the middle of the left and right doors. The function of the vertical beam is to isolate the interior of the compartment from the external environment. However, due to the poor insulation of the vertical beam, condensation will occur on the surface of the vertical beam in a high humidity environment. Generally, a heating wire is arranged on the surface of the vertical beam. The heating wire is used to heat and increase the temperature of the vertical beam surface. When the temperature of the vertical beam surface is higher than the dew point temperature of the air, condensation will not occur on the surface of the vertical beam.

[0003] The existing scheme for controlling the vertical beam heating wire gives the vertical beam heating wire an opening time under a certain ambient temperature to heat the heating wire, and then the temperature of the vertical beam surface is always greater than the dew point temperature corresponding to different humidity in the environment, that is, no matter how the ambient humidity changes, the vertical beam always works at a high opening rate to ensure that the vertical beam surface temperature is higher than the dew point temperature under any humidity conditions. This leads to an increase in the energy consumption of the refrigerator, and the high temperature of the vertical beam also affects the temperature in the refrigerator to a certain extent, affecting the refrigeration and preservation effect of the refrigerator, and has the disadvantages of high energy consumption and poor refrigeration and preservation. Therefore, it is necessary to study a control method for anti-condensation of a refrigerator and a refrigerator to solve the above problems. Summary of the invention

[0004] The present invention aims to provide a control method for preventing condensation of a refrigerator which is easy to control and energy-saving and efficient.

[0005] In order to achieve the above objectives, an embodiment of the present invention provides a method for controlling condensation prevention of a refrigerator, comprising:

[0006] When the refrigerator is in operation, the initial opening rate of the heater of the beam structure between two adjacent doors of the refrigerator is K 初始 , where the opening rate is defined as the heating time of the heater per unit time, K 初始 ≥K min , K min It is defined as the minimum opening rate of the heater within the ambient temperature and humidity range;

[0007] Get the activation rate as K 初始 The surface temperature of the beam structure is T 表面 , and obtain the ambient dew point temperature T according to the real-time ambient temperature and humidity 露点 ;

[0008] When you get T 表面 With T 露点 After that, judge T 表面 、T露点n Whether T is satisfied 表面 =T 露点n +T 阈值 , where T 阈值 >0;

[0009] When T 表面 、T 露点n Meet T 表面 =T 露点n +T 阈值 When the heater opening rate is set to K 初始 ;

[0010] When T 表面 、T 露点n Meet T 表面 <T 露点n +T 阈值 When the heater opening rate is set to increase by Δ n Unit heating time t 单位Δ Until T 表面 =T 露点n +T 阈值 , Δ n is 1, 2, ...;

[0011] When T 表面 、T 露点n Meet T 表面 >T 露点n +T 阈值 When the heater opening rate is set, subtract Δ n Unit heating time t 单位Δ Until T 表面 =T 露点n +T 阈值 , Δ n is 1, 2,…

[0012] As a further improvement of one embodiment of the present invention, K 初始 Set as the maximum value K of the heater opening rate within the ambient temperature and humidity range max .

[0013] As a further improvement of an embodiment of the present invention, the maximum opening rate of the heater within the ambient temperature and humidity range is K max ;

[0014] The aforementioned K 初始 Set to K max With K min The average value of .

[0015] As a further improvement of an embodiment of the present invention, when the ambient temperature is the same, the greater the ambient humidity, the higher the dew point temperature;

[0016] When the ambient humidity is the same, the higher the ambient temperature, the higher the dew point temperature;

[0017] K max When the ambient temperature and humidity of the refrigerator are at their maximum within the ambient temperature and humidity range, T 表面 >T 露点n The value of the opening rate.

[0018] As a further improvement of an embodiment of the present invention, when the ambient temperature is the same, the lower the ambient humidity, the lower the dew point temperature;

[0019] When the ambient humidity is the same, the lower the ambient temperature, the lower the dew point temperature;

[0020] K min When the ambient temperature and humidity of the refrigerator are at their lowest within the ambient temperature and humidity range, T 表面 >T 露点n The value of the opening rate.

[0021] As a further improvement of one embodiment of the present invention, the aforementioned T 阈值 Set to 0.2℃.

[0022] A refrigerator includes a control unit, the control unit includes a memory and a processor, the memory stores a computer program that can be run on the processor, and the processor implements the anti-condensation control method of the refrigerator as described above when executing the computer program.

[0023] In order to solve the above problems, the present invention also provides a refrigerator which is energy-saving and efficient, has good refrigeration and fresh-keeping effects, has good anti-condensation effects, and has a neat and clean interior.

[0024] As a further improvement of an embodiment of the present invention, it also includes an infrared sensor arranged close to the beam structure, wherein the infrared sensor is used to detect the surface temperature of the beam structure.

[0025] As a further improvement of one embodiment of the present invention, it also includes a refrigeration compartment;

[0026] The two adjacent doors are the left door and the right door of the refrigerated compartment.

[0027] The beam structure is a vertical beam between the left door body and the right door body;

[0028] Wherein, the heater is a heating wire on the surface of the vertical beam.

[0029] As a further improvement of an embodiment of the present invention, the infrared sensor is arranged on the left door body or the right door body, wherein the beam structure is arranged within the detection area of ​​the infrared sensor.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows: the control method for preventing condensation of a refrigerator provided by the present invention, the refrigerator passes through the refrigerator operation state when the heater is greater than K min K 初始 Start working by obtaining the surface temperature T of the beam structure when the heater is heated at a certain frequency 表面 , T under real-time ambient temperature and humidity 露点n , by dynamically increasing or decreasing the opening rate value, so that T 表面 =T 露点n +T 阈值 The most suitable opening rate value is obtained when the temperature is adjusted. The anti-condensation effect and energy-saving effect are taken into consideration, thereby effectively reducing the operating frequency of the heater, while also ensuring that there is no condensation on the surface of the beam structure. It has the advantages of easy control, energy-saving and high efficiency, good refrigeration and preservation effect, good anti-condensation effect, and a neat and clean refrigerator interior. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a flow chart of the anti-condensation control method of the refrigerator of the present invention;

[0032] Figure 2 It is a schematic diagram of the structural composition of the refrigerator of the present invention.

[0033] In the figure: 1. infrared sensor; 21. cold storage compartment; 22. left door body; 23. right door body; 3. vertical beam; 31. vertical beam assembly; 32. vertical beam sheet metal shell; 4. heating wire. DETAILED DESCRIPTION

[0034] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0035] The terms "including" and "having" and any variations thereof in the present invention are intended to cover non-exclusive inclusions. Reference to "embodiments" herein means that the specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0036] Combination Figure 1 As shown, the present invention mainly relates to: a control method for preventing condensation of a refrigerator, which includes setting the initial opening rate of the heater of the beam structure between two adjacent doors of the refrigerator to K when the refrigerator is in operation state 初始 .

[0037] The opening rate is defined as the heating time of the heater per unit time, K 初始 ≥K min , K min Defined as the minimum opening rate of the heater within the ambient temperature and humidity range.

[0038] Get the activation rate as K 初始 The surface temperature of the beam structure is T 表面 , and obtain the ambient dew point temperature T according to the real-time ambient temperature and humidity 露点 .

[0039] When you get T 表面 With T 露点 After that, judge T 表面 、T 露点n Whether T is satisfied 表面 =T 露点n +T 阈值 , where T 阈值 >0;

[0040] When T 表面 、T 露点n Meet T 表面 =T 露点n +T 阈值 When the heater opening rate is set to K 初始 ;

[0041] When T 表面 、T 露点n Meet T 表面 <T 露点n +T 阈值 When the heater opening rate is set to increase by Δ n Unit heating time t 单位Δ Until T 表面 =T 露点n +T 阈值 , Δ n is 1, 2, ...;

[0042] When T 表面 、T 露点n Meet T 表面 >T 露点n +T 阈值 When the heater opening rate is set, subtract Δ n Unit heating time t 单位Δ Until T 表面 =T 露点n +T 阈值 , Δ n is 1, 2,…

[0043] Specifically, the value of the opening rate is, for example, 26s / min. The opening rate of the heater is that the heater works for 26 seconds in 1 minute, 52 seconds in 2 minutes, and so on.

[0044] K min Defined as the minimum opening rate of the heater within the ambient temperature and humidity range. K min It can be obtained through experimental measurement, or based on the relationship between the opening rate and the changes in ambient temperature and ambient humidity.

[0045] When the refrigerator is running, that is, when the compressor is started, the heater is at a temperature greater than K. min K 初始 Start working. The real-time ambient temperature and humidity include ambient temperature and ambient humidity. For example, the ambient temperature is 25° and the ambient humidity is 60%.

[0046] When T 表面 、T 露点n Meet T 表面 =T 露点n +T 阈值 When the heater opening rate is set to K 初始 , that is, remain unchanged.

[0047] T 表面 <T 露点n +T 阈值 When the heater opening rate is set at K 初始 On the basis of increasing successively.

[0048] T 表面 >T 露点n +T 阈值 When the heater opening rate is set at K 初始 On the basis of decreasing.

[0049] When the heater is K 初始 When starting to work, by obtaining T at a certain frequency 表面 、T 露点n , by dynamically increasing or decreasing the opening rate value, so that T 表面 =T 露点n +T 阈值 For example, every 4 to 10 minutes, T 表面 、T 露点n , to obtain the most suitable opening rate value. This effectively reduces the operating frequency of the heater and also ensures that there is no condensation on the surface of the beam structure. It has the advantages of easy control, energy saving and high efficiency, good refrigeration and preservation effect, good anti-condensation effect, and neat and clean inside the refrigerator.

[0050] Preferably, the above-mentioned real-time ambient temperature and humidity obtains the ambient dew point temperature T 露点The method of obtaining is to query the temperature, humidity and dew point temperature table. The following data table is for reference only.

[0051] In this embodiment, specifically, referring to the following table, under certain temperature and humidity conditions, taking an ambient temperature of 32° C. and a humidity of 75% as an example, the dew point temperature is 27.01° C. The data in the table can be obtained through temperature and humidity experiments.

[0052]

[0053] At 32℃ and humidity 75%, the surface temperature of the beam structure must be higher than 27.01℃ to ensure that there is no condensation on the surface of the beam structure.

[0054] In this embodiment, one unit heating time t 单位1 It is defined as the heater working for 1 second within 1 minute.

[0055] Furthermore, K 初始 Set as the maximum value K of the heater opening rate within the ambient temperature and humidity range max .

[0056] Specifically, the maximum value K max It can be obtained through experimental measurement or according to the relationship between the opening rate and the ambient temperature and humidity. 初始 With the maximum value K max When starting to work, it can ensure that the surface of the beam structure is always in a non-condensing state. It has the advantages of the best anti-condensation effect and the inside of the refrigerator is neat and clean.

[0057] It is understandable that when the heater K 初始 With the maximum value K max When starting work, in order to make T 表面 =T 露点n +T 阈值 , dynamically reduce the value of the opening rate so that T 表面 =T 露点n +T 阈值 .

[0058] Furthermore, the maximum opening rate of the heater within the ambient temperature and humidity range is K max ;

[0059] The aforementioned K 初始 Set to K max With K min The average value of .

[0060] Specifically, the maximum value K max , K min It can be obtained through experimental measurement, or based on the relationship between the opening rate and the changes in ambient temperature and ambient humidity.

[0061] When the heater K 初始 K max With K min When the average value of the opening rate is used, the anti-condensation effect and energy-saving effect are taken into consideration, and the opening rate value is dynamically increased or decreased to make T 表面 =T 露点n +T 阈值 To obtain the most suitable opening rate value. This effectively reduces the operating frequency of the heater and ensures that there is no condensation on the surface of the beam structure. It has the advantages of easy control, energy saving and high efficiency, good refrigeration and preservation effect, good anti-condensation effect, and neat and clean inside the refrigerator.

[0062] In this embodiment, specifically, refer to the following table, and the table data is for reference only.

[0063]

[0064] It can be clearly seen from the table that, further, when the ambient temperature is the same, the greater the ambient humidity, the higher the dew point temperature.

[0065] When the ambient humidity is the same, the higher the ambient temperature, the higher the dew point temperature.

[0066] Therefore, K max When the ambient temperature and humidity of the refrigerator are at their maximum within the ambient temperature and humidity range, T 表面 >T 露点n The opening rate of the heater K 初始 With the maximum value K max When starting to work, it can ensure that the surface of the beam structure is always in a non-condensing state. It has the advantages of the best anti-condensation effect and the inside of the refrigerator is neat and clean.

[0067] Furthermore, when the ambient temperature is the same, the lower the ambient humidity, the lower the dew point temperature.

[0068] When the ambient humidity is the same, the lower the ambient temperature, the lower the dew point temperature.

[0069] K min When the ambient temperature and humidity of the refrigerator are at their lowest within the ambient temperature and humidity range, T 表面 >T 露点n The value of the opening rate.

[0070] Specifically, get K min The value of K 初始 The method has the advantages of simple data acquisition and easy implementation.

[0071] Furthermore, according to the experience of the inventor, the aforementioned T阈值 Set to 0.2℃. It has the advantages of good anti-condensation effect and good energy saving effect.

[0072] In order to solve the above problems, the present invention also provides a refrigerator which is energy-saving and efficient, has good refrigeration and fresh-keeping effects, has good anti-condensation effects, and has a neat and clean interior.

[0073] Combination Figure 2 As shown, a refrigerator includes a control unit, the control unit 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 anti-condensation control method of the refrigerator as described in any of the preceding items is implemented.

[0074] Furthermore, the refrigerator further includes an infrared sensor 1 disposed near the beam structure. The infrared sensor 1 is used to detect the surface temperature of the beam structure. The infrared sensor 1 is used to detect the surface temperature of the beam structure. The opening rate of the heater at different dew point temperatures is automatically and quickly determined by program control through the surface temperature of the beam structure and the dew point temperature of the corresponding ambient temperature and humidity.

[0075] Furthermore, the refrigerator includes a refrigerating compartment 21 .

[0076] The two adjacent door bodies are a left door body 22 and a right door body 23 which open to the left and right of the refrigerating chamber 21 .

[0077] The beam structure is a vertical beam 3 between the left door body 22 and the right door body 23. It can be understood that the beam structure is also arranged between the upper and lower door bodies.

[0078] The heater is a heating wire 4 on the surface of the vertical beam 3. Preferably, the vertical beam 3 includes a vertical beam assembly 31 and a vertical beam sheet metal shell 32 arranged on the front side of the vertical beam assembly 31. The vertical beam assembly 31 and the vertical beam sheet metal shell 32 define an installation space for installing the heating wire 4. This has the advantage of being easy to install.

[0079] Further, the infrared sensor 1 is arranged on the left door body 22 or the right door body 23. The beam structure is arranged in the detection area of ​​the infrared sensor 1.

[0080] The present invention can be applied to many occasions and devices where heating wires 4 are used to eliminate condensation, such as arranging heating wires 4 inside transparent doors of freezers or refrigerators.

[0081] Compared with the prior art, the present invention provides a method for controlling condensation prevention of a refrigerator, a method for controlling condensation prevention of a refrigerator, and a method for controlling condensation prevention of a refrigerator. min K 初始 Start working by obtaining the surface temperature T of the beam structure when the heater is heated at a certain frequency 表面 , T under real-time ambient temperature and humidity 露点n, by dynamically increasing or decreasing the opening rate value, so that T 表面 =T 露点n +T 阈值 The most suitable opening rate value is obtained when the temperature is adjusted. The anti-condensation effect and energy-saving effect are taken into consideration, thereby effectively reducing the operating frequency of the heater, while also ensuring that there is no condensation on the surface of the beam structure. It has the advantages of easy control, energy-saving and high efficiency, good refrigeration and preservation effect, good anti-condensation effect, and a neat and clean refrigerator interior.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A method for controlling condensation prevention of a refrigerator, characterized in that: include, When the refrigerator is in operation, the initial opening rate of the heater of the beam structure between two adjacent doors of the refrigerator is K 初始 , where the opening rate is defined as the heating time of the heater per unit time, K 初始 ≥K min , K min It is defined as the minimum opening rate of the heater within the ambient temperature and humidity range; Get the activation rate as K 初始 The surface temperature of the beam structure is T 表面 , and obtain the ambient dew point temperature T according to the real-time ambient temperature and humidity 露点 ; When you get T 表面 With T 露点 After that, judge T 表面 , T 露点n Whether T is satisfied 表面 =T 露点n +T 阈值 , where T 阈值 >0; When T 表面 , T 露点n Meet T 表面 =T 露点n +T 阈值 When the heater opening rate is set to K 初始 ; When T 表面 , T 露点n Meet T 表面 <T 露点n +T 阈值 When the heater opening rate is set to increase by Δ n Unit heating time t 单位Δ Until T 表面 =T 露点n +T 阈值 , Δ n is 1, 2, ...; When T 表面 , T 露点n Meet T 表面 >T 露点n +T 阈值 When the heater opening rate is set, subtract Δ n Unit heating time t 单位Δ Until T 表面 =T 露点n +T 阈值 , Δ n is 1, 2,… 2. The method for controlling condensation prevention of a refrigerator according to claim 1, characterized in that: K 初始 Set as the maximum value K of the heater opening rate within the ambient temperature and humidity range max .

3. The method for controlling condensation prevention of a refrigerator according to claim 1, characterized in that: The maximum opening rate of the heater within the ambient temperature and humidity range is K max ; The aforementioned K 初始 Set to K max With K min The average value of .

4. The method for controlling condensation prevention of a refrigerator according to claim 2 or 3, characterized in that: When the ambient temperature is the same, the higher the ambient humidity, the higher the dew point temperature; When the ambient humidity is the same, the higher the ambient temperature, the higher the dew point temperature; K max When the ambient temperature and humidity of the refrigerator are at their maximum within the ambient temperature and humidity range, T 表面 >T 露点n The value of the opening rate.

5. The method for controlling condensation prevention of a refrigerator according to claim 1 or 3, characterized in that: When the ambient temperature is the same, the lower the ambient humidity, the lower the dew point temperature; When the ambient humidity is the same, the lower the ambient temperature, the lower the dew point temperature; K min When the ambient temperature and humidity of the refrigerator are at their lowest within the ambient temperature and humidity range, T 表面 >T 露点n The value of the opening rate.

6. The method for controlling condensation prevention of a refrigerator according to claim 1, characterized in that: The aforementioned T 阈值 Set to 0.2℃.

7. A refrigerator, characterized in that: The invention comprises a control unit, the control unit comprises a memory and a processor, the memory stores a computer program that can be run on the processor, and the processor implements the anti-condensation control method of the refrigerator according to any one of claims 1 to 6 when executing the computer program.

8. The refrigerator according to claim 7, characterized in that: It also includes an infrared sensor arranged close to the beam structure, wherein the infrared sensor is used to detect the surface temperature of the beam structure.

9. The refrigerator according to claim 8, characterized in that: Also includes cold storage compartment; The two adjacent doors are the left door and the right door of the refrigerated compartment. The beam structure is a vertical beam between the left door body and the right door body; Wherein, the heater is a heating wire on the surface of the vertical beam.

10. The refrigerator according to claim 9, characterized in that: The infrared sensor is arranged on the left door body or the right door body, wherein the beam structure is arranged within the detection area of ​​the infrared sensor.

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