Heating control method of a gas pressure equalizing device of a refrigeration appliance, refrigeration appliance

Abstract

The application provides a heating control method of a gas pressure balancing device of a refrigeration equipment and the refrigeration equipment. The heating control method is used for judging the frosting and icing condition of the gas pressure balancing device by judging whether the cumulative conduction duration reaches a preset conduction duration, whether a judgment parameter reaches a judgment threshold, and whether the working duration of the refrigeration equipment reaches a working duration threshold of the refrigeration equipment. Then, when any one of the cumulative conduction duration, the working duration of the refrigeration equipment and the judgment parameter meets the condition, the heating module is controlled to heat, so that the failure of the gas pressure balancing device caused by frosting and icing is avoided, and the control logic of the heating control method is more reasonable.

Description

Technical Field

[0001] This invention relates to the field of refrigeration equipment technology, specifically to a heating control method for a pressure balancing device in refrigeration equipment and refrigeration equipment. Background Technology

[0002] In the refrigeration equipment industry, to ensure the insulation requirements of refrigeration equipment, the storage compartment of the refrigeration equipment is usually required to have a good and stable sealed environment. To achieve the desired insulation effect, the design of each component needs to be closely matched. That is, after meeting the required sealing performance, the insulation effect is achieved; however, this structure has a drawback: after opening the door to retrieve items, it is difficult to open the door again in a short period of time, even with force.

[0003] To overcome this problem, an air pressure balancing device is usually installed. This device can introduce outside air into the storage room to achieve air pressure balance. However, due to factors such as room temperature and air humidity, the air duct inside the air pressure balancing device is prone to frost and ice formation, or even blockage, causing the air pressure balancing device to lose its function. Summary of the Invention

[0004] This invention provides a heating control method for a pressure balancing device in a refrigeration equipment and a refrigeration equipment, in order to solve the technical problem that the pressure balancing device in existing refrigeration equipment is prone to frosting and icing, and may even cause blockage of the air duct.

[0005] To achieve one of the above-mentioned objectives, one embodiment of the present invention provides a heating control method for a pressure balancing device in a refrigeration equipment, comprising the following steps:

[0006] Acquire the cumulative conduction time of the air pressure balancing device, the opening angle of the door, and the opening time;

[0007] Based on the opening angle and the opening duration, a discrimination parameter for controlling the opening of the heating module is calculated;

[0008] If either the cumulative conduction time or the discrimination parameter is satisfied, the heating module is controlled to start heating.

[0009] As a further improvement to the above technology, the step "if either the cumulative conduction time or the discrimination parameter satisfies the condition, then control the heating module to start heating" specifically includes:

[0010] If the cumulative conduction time reaches the preset conduction time first, then

[0011] The first working time of the heating module is calculated based on the heating module's start-up rate and the preset conduction time.

[0012] Based on the discrimination parameters, discrimination threshold, and heating time threshold, the second working time of the heating module is calculated.

[0013] The heating module is controlled to start heating, and the actual working time of the heating module is the sum of the first working time and the second working time.

[0014] As a further improvement to the above technology, the step "if either the cumulative conduction time or the discrimination parameter satisfies the condition, then control the heating module to start heating" specifically includes:

[0015] If the discrimination parameter reaches the discrimination threshold first, then

[0016] The first working time of the heating module is calculated based on the heating module's power-on rate and cumulative conduction time.

[0017] The heating module is controlled to start heating, and the actual working time of the heating module is the sum of the first working time and the heating time threshold.

[0018] As a further improvement to the above technology, the step of "controlling the heating module to start heating" specifically includes:

[0019] Obtain the on / off state of the pressure balancing device;

[0020] If the air pressure balancing device is in the on state, the heating module will start heating only after the air pressure balancing device is in the off state.

[0021] As a further improvement to the above technology, the step of "calculating the discrimination parameters for controlling the opening of the heating module based on the opening angle and the opening duration" specifically includes:

[0022] Obtain the dimensions of the door;

[0023] Based on the opening angle, opening duration, and door size parameters, the discrimination parameters used to control the opening of the heating module are calculated.

[0024] As a further improvement to the above technology, the heating control method further includes:

[0025] Obtain ambient temperature and humidity;

[0026] Based on the preset correspondence between ambient temperature, ambient humidity and heating module operating rate, the heating module operating rate corresponding to the ambient temperature and ambient humidity is obtained;

[0027] Based on the preset correspondence between ambient temperature, ambient humidity and discrimination threshold, the discrimination threshold corresponding to the ambient temperature and the ambient humidity is obtained.

[0028] As a further improvement to the above technology, the operating rate of the heating module increases relative to the increase of the ambient temperature and the ambient humidity.

[0029] As a further improvement to the above technology, the discrimination threshold decreases relative to the increase of the ambient temperature and the ambient humidity.

[0030] One embodiment of the present invention also provides a heating control method for a pressure balancing device of a refrigeration equipment, which includes the following steps:

[0031] Obtain the operating time of the refrigeration equipment, the opening angle of the door, and the opening time;

[0032] Based on the opening angle and the opening duration, a discrimination parameter for controlling the opening of the heating module is calculated;

[0033] Determine whether the operating time of the refrigeration equipment has reached a threshold for the operating time of the refrigeration equipment, and whether the discrimination parameter has reached a threshold for the discrimination parameter;

[0034] If either the working time of the refrigeration equipment or any of the discrimination parameters is satisfied, the heating module is controlled to start heating.

[0035] As a further improvement to the above technology, the step "if either the working time of the refrigeration equipment or the discrimination parameter meets the condition, then control the heating module to start heating" specifically includes:

[0036] If the operating time of the refrigeration equipment reaches the refrigeration equipment operating time threshold, then

[0037] The cumulative conduction time of the pressure balancing device is obtained during the process when the working time of the refrigeration equipment reaches the threshold of the working time of the refrigeration equipment;

[0038] Based on the cumulative conduction time and the heating module start-up rate, the first working time of the heating module is calculated.

[0039] Based on the discrimination parameters, discrimination threshold, and heating time threshold, the second working time of the heating module is calculated.

[0040] The heating module is controlled to start heating, and the actual working time of the heating module is the sum of the first working time and the second working time.

[0041] As a further improvement to the above technology, the step "if either the working time of the refrigeration equipment or the discrimination parameter meets the condition, then control the heating module to start heating" specifically includes:

[0042] If the discrimination parameter reaches the discrimination threshold first, then

[0043] The cumulative on-time of the pressure balancing device is obtained during the process in which the discrimination parameter reaches the discrimination threshold.

[0044] The first working time of the heating module is calculated based on the heating module's power-on rate and cumulative conduction time.

[0045] The heating module is controlled to start heating, and the actual working time of the heating module is the sum of the first working time and the heating time threshold.

[0046] In one embodiment of the present invention, a refrigeration device is also provided, which includes a housing, a door, an air pressure balancing device, and a control unit. The control unit includes a memory and a processor. The memory stores a computer program that can run on the processor. When the processor executes the computer program, it implements the steps in the heating control method of the air pressure balancing device of the refrigeration device described above.

[0047] Compared with the prior art, the heating control method for the air pressure balancing device of the refrigeration equipment provided in an embodiment of the present invention and the refrigeration equipment have the following advantages: the heating control method determines the frosting and icing status of the air pressure balancing device based on whether the cumulative conduction time reaches the preset conduction time, whether the discrimination parameter reaches the discrimination threshold, and whether the working time of the refrigeration equipment reaches the working time threshold of the refrigeration equipment. Then, when any one of the cumulative conduction time, the discrimination parameter, and the working time of the refrigeration equipment is satisfied, the heating module is controlled to heat, so as to avoid the failure of the air pressure balancing device due to frosting and icing. Moreover, the control logic of the heating control method is more reasonable. Attached Figure Description

[0048] Figure 1 This is a schematic flowchart of a heating control method for a pressure balancing device in a refrigeration equipment according to an embodiment of the present invention.

[0049] Figure 2 This is a graph showing the relationship between preset ambient temperature, ambient humidity and heating module start-up rate provided in one embodiment of the present invention.

[0050] Figure 3 This is a graph showing the correspondence between preset ambient temperature, ambient humidity and discrimination threshold provided in one embodiment of the present invention;

[0051] Figure 4 This is a schematic flowchart of a heating control method for a pressure balancing device in a refrigeration equipment according to another embodiment of the present invention;

[0052] Figure 5 This is a schematic diagram of the air pressure balancing device of a refrigeration equipment provided in one embodiment of the present invention. Detailed Implementation

[0053] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0054] It should be noted that the terms "first" and "second" can be used to describe various elements or structures, but these objects should not be limited by these terms. These terms are only used to distinguish these objects from one another and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0055] This invention provides a heating control method for a pressure balancing device in a refrigeration equipment, as well as the refrigeration equipment itself. Based on this scenario, in order to solve the problem that it is difficult to reopen the door of existing refrigeration equipment after opening it to retrieve items within a short period of time, a pressure balancing device is usually installed in the refrigeration equipment. This pressure balancing device can introduce outside air into the storage room to achieve a pressure balancing effect. However, due to factors such as room temperature and air humidity, the air guide pipe in the pressure balancing device is prone to frost and ice formation, or even blockage, causing the pressure balancing device to lose its function.

[0056] Combination Figure 1 As shown, Figure 1 This is a flowchart illustrating a heating control method for a pressure balancing device in a refrigeration equipment according to an embodiment of the present invention. This specification provides the operational steps of the method described in the embodiment or flowchart, but based on conventional or non-inventive methods, more or fewer operational steps may be included. The order of steps listed in this embodiment is merely one possible execution order among many and does not represent the only possible execution order. In actual system or device products, the steps can be executed sequentially or in parallel as shown in the embodiment or drawings. Specifically, the heating control method for the pressure balancing device in the refrigeration equipment includes the following steps:

[0057] S10, acquire the cumulative conduction time of the air pressure balance device, the opening angle of the door, and the opening time;

[0058] S20, based on the opening angle and the opening duration, calculate the discrimination parameters used to control the opening of the heating module;

[0059] Specifically, the opening angle and duration of the door affect the degree of air exchange between the outside space and the refrigeration equipment storage room. Furthermore, after the door is closed, the temperature inside the storage room is low, which can easily cause water vapor in the air to condense rapidly, resulting in a pressure difference between the inside and outside of the refrigeration equipment. Therefore, the opening angle and duration of the door are one of the criteria for determining whether the heating module is turned on.

[0060] In this embodiment, for example, if the opening angle of the door when it is opened for the i-th time is α... i The open duration is t i Wherein, the opening angle α i and open duration t i The product of these values ​​reflects the opening range of the door during the i-th opening, and to some extent, it can also reflect the amount of air exchange between the storage room and the outside air. Therefore, the discrimination parameter A = a1×t1 + a2×t2 + ... + a i ×t i That is, the discrimination parameter A is the superposition of the products of the opening angle and opening time of the door several times.

[0061] S30, determine whether the cumulative conduction duration has reached the preset conduction duration and whether the discrimination parameter has reached the discrimination threshold;

[0062] Specifically, in this embodiment, the preset conduction duration can be set to 120 seconds. The discrimination threshold will also change according to the ambient temperature and humidity of the space where the cooling device is located.

[0063] S40, if either the cumulative conduction time or the discrimination parameter meets the condition, the heating module is controlled to start heating. The heating module is used to heat the pressure balancing device to prevent it from becoming blocked due to frost or ice formation and losing its original function.

[0064] In one embodiment of the present invention, the above step S40, "if either the cumulative conduction time or the discrimination parameter satisfies the condition, then control the heating module to start heating," may specifically include:

[0065] If the cumulative conduction time reaches the preset conduction time first, then

[0066] The first working time of the heating module is calculated based on the heating module's start-up rate and the preset conduction time.

[0067] Specifically, since there is a temperature difference between the storage compartment of the refrigeration equipment and the outside environment, and the humidity in the outside air is greater than that in the refrigerator compartment, the longer the pressure balancing device is turned on, the more likely it is to condense and freeze in the air duct of the pressure balancing device, causing blockage of the air duct and preventing the pressure balancing device from working properly. Therefore, the first working time of the heating module can be calculated based on the start-up rate of the heating module and the preset on-time.

[0068] For example, the heating module's on-time is p, and the preset conduction duration is T. 导通预设 Then the first working time t of the heating module 第一 =p×T 导通预设 That is, the first working time of the heating module is equal to the heating module start-up rate multiplied by the preset conduction time.

[0069] Based on the discrimination parameters, discrimination threshold, and heating duration threshold, the second working duration of the heating module is calculated; wherein the heating duration threshold is the preset heating duration of the heating module under the conditions of door opening angle and opening time.

[0070] Optionally, the heating duration threshold can be set to 120 seconds.

[0071] For example, the second working time t 第二 =t 阈值 ×A / A ij ;

[0072] Among them, t 阈值 A represents the heating duration threshold of the heating module under the conditions of door opening angle and opening time; A is the discrimination parameter; A ij for Figure 3 The discrimination threshold at the i-th row and j-th column.

[0073] The heating module is controlled to start heating, and the actual working time of the heating module is the sum of the first working time and the second working time.

[0074] In this embodiment, if the discrimination parameter reaches the discrimination threshold first, then

[0075] The first working time of the heating module is calculated based on the heating module's power-on rate and cumulative conduction time.

[0076] Specifically, the cumulative conduction time is the cumulative conduction time of the pressure balancing device during the process when the discrimination parameter reaches the discrimination threshold. Therefore, the first working time t 第一 =p×T 累计导通 Where p is the heating module operating rate, and T is the operating rate. 累计导通The cumulative on-time of the pressure balancing device during the process in which the discrimination parameter reaches the discrimination threshold.

[0077] The heating module is controlled to start heating, and the actual working time of the heating module is the sum of the first working time and the heating time threshold.

[0078] In this embodiment, the step "controlling the heating module to start heating" specifically includes:

[0079] Obtain the on / off state of the pressure balancing device;

[0080] If the air pressure balancing device is in the on state, the heating module will start heating only after the air pressure balancing device is in the off state.

[0081] Specifically, when the pressure balancing device is in the on state, air continuously flows from the outside into the storage chamber, and this airflow also carries away heat. Therefore, when the pressure balancing device is in the on state, the heating effect of the heating module is not ideal; sometimes, even after the heating module has finished working, there is still some frost or ice condensed inside the pressure balancing device. Therefore, to ensure the heating efficiency of the heating module, the heating module is controlled to start heating when the pressure balancing device is in the off state.

[0082] In one embodiment of the present invention, the above step "calculating the discrimination parameters for controlling the opening of the heating module based on the opening angle and the opening duration" specifically includes:

[0083] Obtain the dimensions of the door;

[0084] Based on the opening angle, opening duration, and door size parameters, the discrimination parameters used to control the opening of the heating module are calculated.

[0085] Specifically, the different door dimensions affect the amount of air exchanged between the storage room and the outside. Correspondingly, this exchanged air volume also affects the pressure difference between the inside and outside of the refrigeration equipment, and consequently, the degree of condensation and icing by the pressure balancing device. For example, the door's dimensional parameters include its height h and width b. When the door is opened for the i-th time, the opening angle is a. i The door's opening time is t. i ;

[0086] The discriminant parameter is: B = V1×t1 + V2×t2 + … + V i ×t i ;

[0087] Among them, the amount of air exchanged between the storage room and the outside after the door is opened: V i =S i ×h;

[0088] The area of ​​the opening formed by the door and the box after the door is opened: S i =πb 2 ×a i / 360.

[0089] In one embodiment of the present invention, the heating control method further includes the step of:

[0090] Obtain ambient temperature and humidity;

[0091] Based on the preset correspondence between ambient temperature, ambient humidity and heating module operating rate, the heating module operating rate corresponding to the ambient temperature and ambient humidity is obtained; wherein, the operating rate of the heating module increases relative to the increase of ambient temperature and ambient humidity;

[0092] Based on the preset correspondence between ambient temperature, ambient humidity and discrimination threshold, the discrimination threshold corresponding to the ambient temperature and the ambient humidity is obtained; wherein the discrimination threshold decreases relative to the increase of the ambient temperature and the ambient humidity.

[0093] The following example illustrates the correspondence between preset ambient temperature, ambient humidity, heating module start-up rate, and discrimination parameters. Figure 2 This is a graph showing the relationship between preset ambient temperature, ambient humidity and heating module start-up rate provided in one embodiment of the present invention. Figure 3 This is a graph showing the correspondence between preset ambient temperature, ambient humidity and discrimination threshold provided in one embodiment of the present invention.

[0094] like Figure 2 As shown, for example, RT represents ambient temperature and RH represents ambient humidity; when the ambient temperature is less than or equal to 12℃ and the ambient humidity is less than or equal to 50%, that is, RT≤12℃ and RH≤50%, the heating module operating rate p equals 0; when the ambient temperature is less than or equal to 12℃ and the ambient humidity is less than or equal to 60% and greater than 50%, that is, RT≤12℃ and 50%<RH≤60%, the heating module operating rate p equals 30%. The operating rate of the heating module increases with increasing ambient temperature and ambient humidity. The change in the operating rate of the heating module relative to the ambient temperature and ambient humidity can be found in [reference needed]. Figure 2 I will not go into details here.

[0095] like Figure 3 As shown, for example, RT is the ambient temperature and RH is the ambient humidity; when the ambient temperature is less than or equal to 12℃ and the ambient humidity is less than or equal to 50%, that is, RT≤12℃ and RH≤50%, the discrimination parameter A is... 11This equals 60 multiplied by 9, where "60" is the door's opening angle in degrees and "9" is the door's opening duration in minutes. When the ambient temperature is less than or equal to 12℃ and the ambient humidity is less than or equal to 60% and greater than 50%, i.e., RT≤12℃ and 50%<RH≤60%, the discrimination parameter A... 12 This equals 60 multiplied by 8, where "60" represents the door's opening angle and "8" represents the door's opening duration. Furthermore, the discrimination threshold decreases relative to increases in ambient temperature and humidity. The change in the heating module's operating rate relative to changes in ambient temperature and humidity can be found in [reference needed]. Figure 3 I will not go into details here.

[0096] In the above Figure 2 and Figure 3 In this invention, the preset relationship between ambient temperature, ambient humidity, heating module start-up rate, and discrimination parameters is merely a set of experimental values ​​obtained by the inventors after numerous experiments. Therefore, all technical solutions that are the same as or similar to this embodiment are covered within the protection scope of this invention.

[0097] In one embodiment of the present invention, a heating control method for a pressure balancing device of a refrigeration equipment is also provided, such as... Figure 4 As shown, Figure 4 This is a schematic diagram of the heating control method for the air pressure balancing device of the refrigeration equipment provided in this embodiment. The difference from the above embodiment is that the heating control method determines the frosting and icing status of the air pressure balancing device based on the working time of the refrigeration equipment, the opening angle of the door, and the opening time. Then, when any one of the working time of the refrigeration equipment and the judgment parameter meets the condition, the heating module is controlled to heat.

[0098] Specifically, the heating control method includes the following steps:

[0099] N10, obtain the working time of the refrigeration equipment, the opening angle of the door, and the opening time;

[0100] N20, based on the opening angle and the opening duration, calculate the discrimination parameters used to control the opening of the heating module;

[0101] N30, determine whether the working time of the refrigeration equipment has reached the working time threshold of the refrigeration equipment, and whether the discrimination parameter has reached the discrimination threshold;

[0102] The operating time threshold of the refrigeration equipment can be set to 2 hours. Those skilled in the art will understand that setting the operating time threshold to 2 hours is merely an experimental value obtained by the inventors after numerous experiments. Therefore, all technical solutions that are the same as or similar to this embodiment are covered within the protection scope of this invention.

[0103] N40, if either the working time of the refrigeration equipment or any of the discrimination parameters meets the conditions, then the heating module is controlled to start heating.

[0104] In this embodiment, step N40, "If either the working time of the refrigeration device or the discrimination parameter meets the condition, then control the heating module to start heating," specifically includes:

[0105] If the operating time of the refrigeration equipment reaches the refrigeration equipment operating time threshold, then

[0106] The cumulative conduction time of the pressure balancing device is obtained during the process when the working time of the refrigeration equipment reaches the threshold of the working time of the refrigeration equipment;

[0107] Based on the cumulative conduction time and the heating module start-up rate, the first working time of the heating module is calculated.

[0108] For example, the first working time t 第一 =p×T 累计导通 Where p is the heating module operating rate, and T is the operating rate. 累计导通 The cumulative on-time of the pressure balancing device during the process in which the discrimination parameter reaches the discrimination threshold.

[0109] Based on the discrimination parameters, discrimination threshold, and heating time threshold, the second working time of the heating module is calculated.

[0110] Optionally, the heating duration threshold can be set to 120 seconds;

[0111] For example, the second working duration t 第二 =t 阈值 ×A / A ij ;

[0112] Among them, t 阈值 A represents the heating duration threshold of the heating module under the conditions of door opening angle and opening time; A is the discrimination parameter; A ij for Figure 3 The discrimination threshold at the i-th row and j-th column.

[0113] The heating module is controlled to start heating, and the actual working time of the heating module is the sum of the first working time and the second working time.

[0114] In this embodiment, step N40, "If either the working time of the refrigeration device or the discrimination parameter meets the condition, then control the heating module to start heating," specifically includes:

[0115] If the discrimination parameter reaches the discrimination threshold first, then

[0116] The cumulative on-time of the pressure balancing device is obtained during the process in which the discrimination parameter reaches the discrimination threshold.

[0117] The first working time of the heating module is calculated based on the heating module's power-on rate and cumulative conduction time.

[0118] For example, the first working time t 第一 =p×T 累计导通 Where p is the heating module operating rate, and T is the operating rate. 累计导通 The cumulative on-time of the pressure balancing device during the process in which the discrimination parameter reaches the discrimination threshold.

[0119] The heating module is controlled to start heating, and the actual working time of the heating module is the sum of the first working time and the heating time threshold.

[0120] In summary, the beneficial effects of the heating control method for the air pressure balancing device of the refrigeration equipment provided by the present invention are as follows: the heating control method determines the frosting and icing status of the air pressure balancing device by whether the cumulative conduction time reaches the preset conduction time, whether the discrimination parameter reaches the discrimination threshold, and whether the working time of the refrigeration equipment reaches the working time threshold of the refrigeration equipment. Then, when any one of the conditions of the cumulative conduction time and the discrimination parameter is met, the heating module is controlled to heat, so as to avoid the failure of the air pressure balancing device due to frosting and icing. Furthermore, the control logic of the heating control method is more reasonable and more in line with the usage conditions of the air pressure balancing device.

[0121] In one embodiment of the present invention, a refrigeration device is also provided, comprising a housing, a door, a pressure balancing device 10, and a control unit. The control unit includes a memory and a processor. The memory stores a computer program that can run on the processor. When the processor executes the computer program, it implements the steps in the heating control method described above. The housing has a storage compartment for storing food, and the door is used to open and close the storage compartment.

[0122] In this embodiment, as Figure 5 As shown, the air pressure balancing device 10 also includes a housing 11, an air guide pipe 12, and a mounting base 13. One end of the mounting base 13 is connected to the storage chamber, and the other end is connected to the air guide pipe 12. The air guide pipe 12 is connected to the side wall of the housing 11 and is disposed between the housing 11 and the mounting base 13. The housing 11, the air guide pipe 12, and the mounting base 13 together define the air pressure balancing hole 17.

[0123] Furthermore, the air pressure balancing device 10 also includes a spring 15, a spring slide rail 14 for fixing the spring, and a valve core 16 movably disposed at the bottom of the spring 15. The air pressure balancing hole 17 includes a horizontally disposed first hole 171 and a vertically disposed second hole 172, wherein the air guide pipe 12 and the mounting base 13 define the first hole 171, and the outer shell 11 defines the second hole 172. One end of the first hole 171 is connected to the storage chamber, and the other end of the first hole 171 is connected to the second hole 172.

[0124] Furthermore, the spring 15 slide rail is disposed at the top of the second hole 172 and extends downward along the second hole 172. The top end of the spring 15 is connected to the top of the spring slide rail 14, and the bottom end of the spring 15 is connected to the valve core 16. The lower end face of the valve core 16 mates with the bottom end of the second hole 172. The valve core 16 is used to flexibly open or close the second hole 172.

[0125] Optionally, a rubber ring 161 is provided at the contact point between the lower end face of the valve core 16 and the second hole 172 to ensure the sealing of the storage chamber and prevent cold air from overflowing.

[0126] In this embodiment, the heating module 18 is disposed on the outer periphery of the second hole 172. Preferably, the heating module 18 is disposed on the outer periphery of the air guide pipe 12.

[0127] In one embodiment of the present invention, the air pressure balancing device further includes an identification module, which is used to identify the on / off state of the air pressure balancing device.

[0128] Furthermore, the identification module is a pressure sensor located at the bottom of the spring slide rail 14. When the second hole 172 is in the closed state, the spring 15 presses against the pressure sensor, and when the second hole 172 is in the open state, the spring 15 disengages from the pressure sensor.

[0129] Furthermore, the identification module is a metal spring sheet located at the bottom of the spring slide rail 14. The displacement change of the metal spring sheet causes the contact to conduct, forming a switch signal to trigger the control unit.

[0130] Furthermore, the identification module is a temperature identification module, with temperature sensors distributed on the outside of the air duct 12. By sensing that the temperature rise per unit time is greater than a threshold, when the valve core 16 opens and causes the temperature of the air duct 12 to rise significantly, the control unit is triggered.

[0131] The identification module identifies pressure changes, displacement changes, or temperature changes at the air pressure balance hole 17, and then sends a heating trigger signal to the control unit. It has the advantages of simple structure and easy triggering.

[0132] The processor can be a Central Processing Unit (CPU), or other general-purpose processing units, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field-Programmable Gate Arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. General-purpose processing units can be microprocessors or any conventional processing unit. The processor is the control center of the refrigeration equipment, connecting all parts of the refrigeration equipment via various interfaces and lines.

[0133] The memory can be used to store the computer programs and / or modules. The processor implements various functions of the refrigeration device by running or executing the computer programs and / or modules stored in the memory and by calling the data stored in the memory. The memory may mainly include a program storage area and a data storage area, wherein the program storage area may store the operating system, application programs required for at least one function, etc. In addition, the memory may include high-speed random access memory units, and may also include non-volatile memory units, such as hard disks, memory, plug-in hard disks, smart media cards (SMC), secure digital cards (SD cards), flash cards, at least one disk storage unit, flash memory device, or other volatile solid-state storage units.

[0134] For example, the computer program can be divided into one or more modules / units, which are stored in the memory and executed by a processor to complete the present invention. The one or more modules / units can be a series of computer program instruction segments capable of performing a specific function, which describe the execution process of the computer program in the refrigeration equipment.

[0135] The refrigeration equipment provided in this embodiment of the invention can be used to execute the heating control method described above. Therefore, the beneficial effects it can achieve can be referred to the beneficial effects corresponding to the heating control method described above, and will not be repeated here.

[0136] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0137] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

Claims

1. A heating control method for a pressure balancing device in a refrigeration equipment, characterized in that, The heating control method includes the following steps: Acquire the cumulative conduction time of the air pressure balancing device, the opening angle of the door, and the opening time; Based on the opening angle and the opening duration, a discrimination parameter for controlling the opening of the heating module is calculated, wherein the discrimination parameter B = V1×t1 + V2×t2 + … + V i ×t i When the door opens for the i-th time, the opening angle of the door is a. i The door's opening time is t. i The amount of air exchanged between the storage room and the outside after the door is opened: V i =S i ×h, the opening area formed by the door and the box: S i =πb 2 ×a i / 360, where h and b are the height and width of the door, respectively; Determine whether the cumulative conduction duration has reached the preset conduction duration and whether the discrimination parameter has reached the discrimination threshold. If either the cumulative conduction time or the discrimination parameter satisfies the condition, the on / off state of the air pressure balancing device is obtained; if the air pressure balancing device is in the on state, the heating module is controlled to start heating until the air pressure balancing device is in the off state.

2. The heating control method according to claim 1, characterized in that, The above step "If either the cumulative conduction time or the discrimination parameter satisfies the condition, then control the heating module to start heating" specifically includes: If the cumulative conduction time reaches the preset conduction time first, then The first working time of the heating module is calculated based on the heating module's start-up rate and the preset conduction time. Based on the discrimination parameters, discrimination threshold, and heating time threshold, the second working time of the heating module is calculated. The heating module is controlled to start heating, and the actual working time of the heating module is the sum of the first working time and the second working time.

3. The heating control method according to claim 1, characterized in that, The above step "If either the cumulative conduction time or the discrimination parameter satisfies the condition, then control the heating module to start heating" specifically includes: If the discrimination parameter reaches the discrimination threshold first, then The first working time of the heating module is calculated based on the heating module's power-on rate and cumulative conduction time. The heating module is controlled to start heating, and the actual working time of the heating module is the sum of the first working time and the heating time threshold.

4. The heating control method according to claim 1, characterized in that, The heating control method further includes: Obtain ambient temperature and humidity; Based on the preset correspondence between ambient temperature, ambient humidity and heating module operating rate, the heating module operating rate corresponding to the ambient temperature and ambient humidity is obtained; Based on the preset correspondence between ambient temperature, ambient humidity and discrimination threshold, the discrimination threshold corresponding to the ambient temperature and the ambient humidity is obtained.

5. The heating control method according to claim 4, characterized in that, The operating rate of the heating module increases relative to the increase of the ambient temperature and the ambient humidity.

6. The heating control method according to claim 4, characterized in that, The discrimination threshold decreases relative to the increase of the ambient temperature and the ambient humidity.

7. A refrigeration device, characterized in that, It includes a housing, a door, an air pressure balancing device, and a control unit. The control unit includes a memory and a processor. The memory stores a computer program that can run on the processor. When the processor executes the computer program, it implements the steps in the heating control method of the air pressure balancing device of the refrigeration equipment according to any one of claims 1 to 6.

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