Refrigeration apparatus and anti-condensation control method thereof

Abstract

The application discloses a refrigeration equipment and an anti-condensation control method thereof. The anti-condensation control method of the refrigeration equipment comprises the following steps: acquiring an actual temperature difference between a fluid temperature and a dew point temperature in an anti-condensation pipe; acquiring a target output parameter of an adjusting component according to the actual temperature difference; and controlling the adjusting component to intermittently work according to the target output parameter, so that the actual temperature difference is maintained within a set temperature difference range. The anti-condensation strength of the anti-condensation device can be controlled at an optimal anti-condensation strength, dynamic balance of the whole machine at the optimal anti-condensation strength is realized, and the energy consumption of the whole machine is reduced and the energy of the whole machine is saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of anti-condensation of refrigeration equipment, and particularly relates to a refrigeration equipment and an anti-condensation control method thereof. BACKGROUND

[0002] The temperature of the refrigeration equipment, especially at the freezing chamber, is relatively low and forms a large temperature difference with the ambient temperature, so that condensation is easily generated during the operation of the refrigeration equipment. The prior art generally pre-buries an anti-condensation pipe at the side of the door of the freezing chamber, and high-temperature and high-pressure refrigerant vapor in the refrigeration module is delivered into the anti-condensation pipe through a compressor in the refrigeration module, so that the refrigeration module needs to be welded with the anti-condensation pipe when being installed into the refrigeration equipment body, the structure is complex, and the heat in the anti-condensation pipe cannot be dynamically adjusted, which increases power consumption. SUMMARY

[0003] The main purpose of the present application is to provide a refrigeration equipment and an anti-condensation control method thereof, which aims to solve the problem that the traditional anti-condensation pipe cannot adjust heat output and increases power consumption.

[0004] To achieve the above-mentioned purpose, the present application provides an anti-condensation control method of a refrigeration equipment, the refrigeration equipment comprising a cabinet and an anti-condensation device, the cabinet defining a freezing chamber, the anti-condensation device comprising an anti-condensation pipe and an adjusting component, the anti-condensation pipe being arranged in a closed loop along the circumference of the freezing chamber and being used to circulate heat exchange liquid, and the adjusting component being used to adjust the flow and / or heat of the heat exchange liquid in the anti-condensation pipe.

[0005] The anti-condensation control method of the refrigeration equipment comprises the following steps.

[0006] An actual temperature difference between a fluid temperature in the anti-condensation pipe and a dew point temperature is obtained.

[0007] According to the actual temperature difference, a target output parameter of the adjusting component is obtained.

[0008] The adjusting component is controlled to intermittently work according to the target output parameter, so that the actual temperature difference is maintained within a set temperature difference range.

[0009] Optionally, before the step of obtaining the actual temperature difference between the fluid temperature in the anti-condensation pipe and the dew point temperature, the method further comprises the following steps.

[0010] The adjusting component is controlled to work according to a maximum output parameter.

[0011] Optionally, the step of obtaining the target output parameter of the adjusting component according to the actual temperature difference comprises the following steps.

[0012] when the actual temperature difference is not less than a first threshold value, reducing the output parameter of the adjusting component until the actual temperature difference is within the set temperature difference range, and determining the current output parameter of the adjusting component as a target output parameter;

[0013] wherein the first threshold value is greater than a maximum value of the set temperature difference range.

[0014] Optionally, a difference between the first threshold value and the maximum value of the set temperature difference range is not greater than 1℃.

[0015] Optionally, the step of reducing the output parameter of the adjusting component comprises:

[0016] decreasing the output parameter of the adjusting component in a segmented and stepped manner.

[0017] Optionally, after the step of reducing the output parameter of the adjusting component when the target temperature is not less than a first threshold value, the method further comprises:

[0018] when the output parameter of the adjusting component is reduced to a minimum threshold value and the target temperature is not within the set temperature difference range, determining that the adjusting component is faulty.

[0019] Optionally, the minimum threshold value is not greater than 10% of a maximum output parameter.

[0020] Optionally, the step of controlling the adjusting component to intermittently work at the target output parameter comprises:

[0021] controlling the adjusting component to work at the target output parameter for a set time and then stop;

[0022] when the actual temperature difference is not greater than a second threshold value, controlling the adjusting component to start and work at the target output parameter;

[0023] wherein the second threshold value is less than a minimum value of the set temperature difference range.

[0024] In addition, to achieve the above object, the application further provides a refrigeration device, comprising:

[0025] a cabinet body formed with a freezing chamber;

[0026] a refrigeration module detachably connected to the cabinet body and performing refrigeration on the freezing chamber;

[0027] a condensation-preventing device comprising a condensation-preventing pipe and an adjusting component, the condensation-preventing pipe being arranged in a closed loop along a circumference of the freezing chamber and used to circulate a heat exchange liquid, and the adjusting component being used to adjust a flow rate and / or heat of the heat exchange liquid in the condensation-preventing pipe;

[0028] a temperature sensor arranged in the anti-condensation pipe and configured to sense a fluid temperature of the heat exchange liquid in the anti-condensation pipe; and

[0029] a control device electrically connected to the temperature sensor and the adjusting component, the control device comprising a memory, a processor, and a refrigeration device anti-condensation control program stored in the memory and executable on the processor, the refrigeration device anti-condensation control program being configured to implement the steps of the refrigeration device anti-condensation control method.

[0030] Optionally, the adjusting component comprises a pump body and / or a heating component.

[0031] Optionally, a receiving cavity is arranged at a rear bottom of the cabinet adjacent to the freezing chamber.

[0032] The refrigeration device comprises a condenser, an evaporator, and a compressor, which are sequentially connected to form a refrigeration circuit, and the refrigeration device is accommodated in the receiving cavity.

[0033] In the technical solution provided by the present application, when the anti-condensation pipe is connected to the heat exchange liquid, the anti-condensation pipe can conduct the temperature of the heat exchange liquid to the cabinet due to its heat conduction performance, thereby preventing condensation caused by excessively low temperature at the position; the control device can calculate the actual temperature difference according to the outlet temperature and the dew point temperature obtained in real time, and then determine the current anti-condensation strength of the anti-condensation device; the control device can determine the target output parameter of the adjusting component according to the current anti-condensation strength, that is, determine the optimal anti-condensation strength of the anti-condensation device; when the adjusting component is controlled to work intermittently according to the target output parameter, the anti-condensation strength of the anti-condensation device can be controlled at the optimal anti-condensation strength, so as to realize the dynamic balance of the whole machine at the optimal anti-condensation strength, which helps to reduce the energy consumption of the whole machine and save the energy of the whole machine. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in the drawings without creative labor.

[0035] Figure 1 is a side view schematic diagram of an embodiment of the refrigeration device provided by the present application;

[0036] Figure 2 is a front view schematic diagram of the refrigeration device in Figure 1

[0037] Figure 3 is​Figure 2 Enlarged structural schematic view of the at the middle A;

[0038] Figure 4 Schematic diagram of hardware operation environment of the control device provided by the present application;

[0039] Figure 5 Schematic diagram of the first embodiment of the anti-condensation control method of the refrigeration equipment provided by the present application;

[0040] Figure 6 Schematic diagram of the second embodiment of the anti-condensation control method of the refrigeration equipment provided by the present application;

[0041] Figure 7 Schematic diagram of the third embodiment of the anti-condensation control method of the refrigeration equipment provided by the present application;

[0042] Figure 8 Schematic diagram of the fourth embodiment of the anti-condensation control method of the refrigeration equipment provided by the present application;

[0043] Figure 9 Schematic diagram of the fifth embodiment of the anti-condensation control method of the refrigeration equipment provided by the present application;

[0044] Figure 10 Flowchart of an embodiment of the anti-condensation control method of the refrigeration equipment provided by the present application.

[0045] Explanation of reference numerals:

[0046] Reference Name Reference Name 100 Box 320 Adjustment component 110 Freezing compartment 321 Pump body 111 Opening 322 Heating component 120 Refrigerating compartment 330 Temperature sensor 130 Housing cavity 400 Control device 140 Foaming structure 410 Processor 200 Refrigerating device 420 Communication bus 300 Anti-condensation device 430 User interface 310 Anti-condensation tube 440 Network interface 311 Buffer cavity 450 Memory

[0047] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0049] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings). If the certain posture changes, the directional indications also change accordingly.

[0050] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. For example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection required by the present application.

[0051] The temperature of the refrigeration equipment, especially at the freezing chamber, is low and forms a large temperature difference with the ambient temperature, so that condensation is easily generated during the operation of the refrigeration equipment. The prior art generally pre-buries an anti-condensation pipe around the door of the freezing chamber, and high-temperature and high-pressure refrigerant vapor in the refrigeration module is delivered into the anti-condensation pipe through the compressor in the refrigeration module, so that the refrigeration module needs to be welded with the anti-condensation pipe when installed in the refrigeration equipment body, the structure is complex, and the heat in the anti-condensation pipe cannot be dynamically adjusted, increasing the power consumption.

[0052] In view of the above, the present application provides a refrigeration equipment, such as a refrigerator, a freezer and the like, please refer to Figures 1 to 4 , the specific embodiments of the refrigeration equipment provided by the present application are shown in the drawings.

[0053] It should be noted that the front direction involved in the following embodiments is the direction of the refrigeration equipment facing the user in the normal working state, and the rear direction is the direction of the refrigeration equipment facing away from the user. The up and down direction is generally the vertical direction of the position of the refrigeration equipment.

[0054] Please refer to Figures 1 to 3The application provides the refrigeration equipment, which comprises a cabinet 100, a refrigeration module, an anti-condensation device 300, a temperature sensor 330 and a control device 400. The cabinet 100 is formed with a freezing chamber 110 with a front opening 111; the refrigeration module is detachably connected to the cabinet 100 and performs refrigeration on the freezing chamber 110; the anti-condensation device 300 comprises an anti-condensation pipe 310 and an adjusting component 320, the anti-condensation pipe 310 is arranged around the freezing chamber 110 along the circumference of the opening 111, and the adjusting component 320 is used for driving the circulation of heat exchange liquid in the anti-condensation pipe 310; the temperature sensor 330 is arranged on the anti-condensation pipe 310 and used for sensing the fluid temperature of the heat exchange liquid in the anti-condensation pipe 310; and the control device 400 is electrically connected with the temperature sensor 330 and the adjusting component 320, and comprises a memory, a processor and an anti-condensation control program of the refrigeration equipment stored on the memory and capable of running on the processor, wherein the anti-condensation control program of the refrigeration equipment is configured to realize the steps of the anti-condensation control method of the refrigeration equipment.

[0055] In the technical scheme, the temperature of the heat exchange liquid meets the anti-condensation requirement; when the anti-condensation pipe 310 is connected with the heat exchange liquid, the anti-condensation pipe 310 can conduct the temperature of the heat exchange liquid to the cabinet 100 due to the heat conduction performance of the anti-condensation pipe 310, so as to prevent the condensation caused by the too low temperature at the position; since the anti-condensation pipe 310 is arranged around the freezing chamber 110 along the circumference of the opening 111, the circulation of the heat exchange liquid in the anti-condensation pipe 310 can concentrate the heat exchange on the position of the cabinet 100 where the condensation is prone to occur, and can expand the heat exchange area as much as possible, which is helpful to improve the anti-condensation effect. The anti-condensation device 300 can realize the anti-condensation function independently without the refrigeration module, so that the structure design and assembly scheme of the refrigeration module are not limited, and the structure miniaturization and assembly simplification of the refrigeration module are facilitated.

[0056] In the design, the cabinet 100 defines the freezing chamber 110, the freezing chamber 110 is provided with the opening 111 connected to the external environment, and the opening 111 is generally arranged forward. Of course, the cabinet 100 can also define a refrigerating chamber 120, and the refrigerating chamber 120 is also provided with the opening 111. In addition, the refrigeration equipment generally comprises a door body, the door body is movably connected with the cabinet 100, and the door body is used to open or close the opening 111 of the freezing chamber 110 in the movement process.

[0057] The anti-condensation device 300 is not limited to being installed into the cabinet 100 from the opening 111. According to actual needs, the anti-condensation device 300 can be installed into the cabinet 100 from any part of the cabinet 100, for example, being installed into the installation area upward from the bottom of the cabinet 100, being installed into the installation area from the side of the cabinet 100, and the like.

[0058] Specifically, in the anti-condensation device 300, the anti-condensation pipe 310 generally refers to a pipe body in which a required space is formed for the heat exchange liquid to flow through, and the wall surface of which can be in thermal conduction with the heat exchange liquid in the interior. There are various technical solutions to achieve this function:

[0059] In an embodiment, the anti-condensation pipe 310 can have a heat exchange function by selecting a suitable material. For example, the anti-condensation pipe 310 is made of a heat-conducting material, such as a metal material with good heat-conducting performance, so that when the heat exchange liquid flows through the anti-condensation pipe 310, the heat exchange liquid directly conducts heat to the contact part of the anti-condensation pipe 310, and then the heat is dissipated outward, thereby being able to heat the environment of the anti-condensation pipe 310.

[0060] In an embodiment, the anti-condensation pipe 310 can also have a heat exchange function by improving its structural features. For example, when part of the anti-condensation pipe 310 extends in the horizontal direction (hereinafter referred to as a horizontal pipe segment), and the liquid level height of the heat exchange liquid in the horizontal pipe segment is less than the diameter of the horizontal pipe segment, a cavity part is defined in the horizontal pipe segment, and the horizontal pipe segment can be provided with a heat dissipation hole in the pipe wall corresponding to the cavity part, and the heat of the heat exchange liquid is dissipated through the heat dissipation hole.

[0061] Of course, the above two embodiments can be set up alternatively or simultaneously. For example, the entire pipe body of the anti-condensation pipe 310 can be made of a heat-conducting material, and at the same time, the heat dissipation hole is provided at the part of the horizontal pipe segment, and the like, which will not be described here in detail.

[0062] During the circulation and flow of the heat exchange liquid in the anti-condensation pipe 310, the temperature of the heat exchange liquid is at least not lower than the condensation temperature, so that after the heat exchange liquid releases heat outward, the temperature of the corresponding part of the cabinet 100 is increased, and air cannot be condensed into fog water at this part, thereby achieving the purpose of anti-condensation.

[0063] The specific form of the heat exchange liquid is not limited, and can be any liquid or gas that can achieve the heat exchange function. In the present embodiment, the heat exchange liquid can be a glycol solution obtained according to a set ratio. It can be understood that glycol is a colorless and slightly viscous liquid, with a boiling point of 197.4°C and a freezing point of -11.5°C, and can be mixed with water in any ratio. Moreover, the freezing point of glycol changes with the concentration of glycol in the aqueous solution, and the ratio of the glycol solution can be adjusted according to the actual application requirements. In this way, when the heat exchange liquid is specifically set as a glycol solution, the freezing point of the heat exchange liquid can be ensured to be less than 0°C, which has good frost resistance and can maintain a liquid state in the low-temperature environment of the freezing chamber 110, facilitating circulation.

[0064] Based on the above embodiment, the anti-condensation pipe 310 can be communicated with other components and obtain the heat exchange liquid reaching the target temperature through other components; or as in the present embodiment, the adjusting component 320 includes a pump body 321 and / or a heating component 322. The circulation loop formed by the anti-condensation pipe 310 and the pump body 321 is generally closed, and the pump body 321 is used to drive the heat exchange liquid to circulate in the anti-condensation pipe 310 at a set flow rate and a set liquid amount. The heating component 322 is arranged in the cabinet 100 to heat the anti-condensation pipe 310 and / or the heat exchange liquid. The heating component 322 can be, for example, an electric heating wire, etc.; the heating component 322 is arranged at a position of the anti-condensation pipe 310 and heats the anti-condensation pipe 310 and / or the heat exchange liquid in the heating area; the heat exchange liquid in the heating area directly or indirectly obtains heat, which is then transmitted to the entire periphery of the freezing chamber 110 during the flow process along the entire circulation loop.

[0065] The heating component 322 can be arranged as one or two or more. When the heating component 322 is arranged as multiple, the multiple heating components 322 can be arranged at intervals along the circulation loop. At least two of the multiple heating components 322 can be arranged in series or in parallel. It should be noted that the heating component 322 can be a component specially arranged on the anti-condensation device 300, or can be another inherent component in the refrigeration equipment, and the waste heat generated by the inherent component during operation can be used to heat the anti-condensation pipe 310 and / or the heat exchange liquid.

[0066] Then, the temperature sensor 330 is arranged in the cabinet 100 to sense the temperature value of the anti-condensation pipe 310 and / or the heat exchange liquid; the control device 400 is electrically connected with the temperature sensor 330, the pump body 321 and the heating component 322, so as to control the pump body 321 and / or the heating component 322 to work according to the received temperature value.

[0067] It should be noted that the control device 400 is electrically connected with the temperature sensor 330, and can receive the temperature value sensed by the temperature sensor 330 and analyze the temperature value according to a set algorithm when the temperature value is sensed. The control device 400 can also be electrically connected with at least one of the pump body 321 and the heating component 322 to control the pump body 321 and / or the heating component 322 connected therewith according to actual needs.

[0068] For example, when the temperature value is lower than a first temperature threshold, the power of the heating component 322 can be controlled to increase the heat carried by the heat exchange liquid, and / or the rotating speed of the pump body 321 can be controlled to increase the flow rate and flow volume of the heat exchange liquid; conversely, when the temperature value is higher than a second temperature threshold, the power of the heating component 322 can be controlled to reduce the heat carried by the heat exchange liquid, and / or the rotating speed of the pump body 321 can be controlled to slow down the flow rate and flow volume of the heat exchange liquid. The first temperature threshold is lower than the second temperature threshold, and can be set according to actual application needs.

[0069] In addition, based on any of the above embodiments, part of the anti-condensation pipe 310 is provided with an enlarged pipe diameter to form a buffer cavity 311 at the enlarged part. The buffer cavity 311 forms sufficient space to buffer the kinetic energy generated by the heat exchange liquid due to volume change caused by water temperature change, thereby helping to stabilize the flow balance of the heat exchange liquid in the circulation loop.

[0070] Specifically, when the anti-condensation pipe 310 is formed by bending the entire pipe body, the anti-condensation pipe 310 can be formed by enlarging part of the pipe segments during the forming of the anti-condensation pipe 310, so that the cross-sectional area of the buffer cavity 311 formed is greater than that of the remaining pipe segments of the anti-condensation pipe 310. When the anti-condensation pipe 310 includes a plurality of pipe monomers connected in sequence, at least one of the plurality of pipe monomers can be provided with a pipe diameter greater than that of the remaining pipe monomers.

[0071] The buffer cavity 311 can be provided at any position on the anti-condensation pipe 310, and can be one or more according to actual needs. When the buffer cavity 311 is provided as a plurality, the structure, size, shape, etc. of the plurality of buffer cavities 311 can be the same or at least partially different.

[0072] In addition, when the refrigeration device comprises the heating component 322 as described above, the heating component 322 can be arranged in the buffer cavity 311, for example, arranged in the buffer cavity 311. Since the cross-sectional area at the buffer cavity 311 is larger than that of the remaining pipe section of the anti-condensation pipe 310, the flow of the heat exchange liquid in the buffer cavity 311 is relatively larger, and by heating the heat exchange liquid in the buffer cavity 311, the single heating amount of the heat exchange liquid can be increased, thereby improving the heating efficiency of the heat exchange liquid by the heating component 322.

[0073] Based on any of the above embodiments, when the installation position of the anti-condensation device 300 in the cabinet 100 is accurate and relatively fixed, the set region in the cabinet 100 and outside the freezing chamber 110 can be foamed and filled with foaming material, so that the foaming material covers the outer periphery of the anti-condensation device 300 and the freezing chamber 110, for example, the outer periphery of the freezing chamber 110, and is insulated.

[0074] In view of the above, the refrigeration module can generally comprise an evaporator, a condenser and a compressor connected in sequence to constitute a refrigeration circuit, and of course, can also comprise various valves, capillary tubes and the like, which are mature technologies and will not be described here.

[0075] The arrangement of the anti-condensation device 300 can eliminate the connection operation between the anti-condensation device 300 and the refrigeration module, so that the anti-condensation device 300 and the refrigeration module are independent of each other and are basically not associated with each other. The structure and assembly of the refrigeration module do not need to consider the pre-burial of the traditional anti-condensation pipe 310, and the evaporator in the refrigeration module does not have an insulation structure, so there is no need to solve the assembly and insulation of the evaporator insulation structure and the cabinet 100. Therefore, the anti-condensation device 300 does not excessively limit the structure and assembly of the refrigeration module, so that the refrigeration module has more selectivity in its structural design and assembly scheme, and the refrigeration module can be designed and produced separately from the structure of the cabinet 100, so as to make the refrigeration module as small and easy to assemble as possible.

[0076] After the refrigeration module is installed inside the cabinet 100, at least the evaporator and other components of the refrigeration module are arranged adjacent to the freezing chamber 110, because the refrigeration module needs to refrigerate the freezing chamber 110. Therefore, in appropriate cases, the heat generated during the operation of the condenser can also be used to assist the anti-condensation device 300 in heat exchange.

[0077] After the refrigeration module is assembled, it can realize refrigeration function by, for example, vacuumizing and adding refrigerant. After the refrigeration module is installed in the accommodating cavity 130 of the cabinet 100, the accommodating cavity 130 provides installation space for the refrigeration module, and the accommodating cavity 130 is arranged at the bottom of the rear side of the cabinet 100 and adjacent to the freezing chamber 110, which is beneficial to the assembly between the refrigeration module and the cabinet 100 and helps the appearance of the whole machine.

[0078] After the refrigeration module is installed in the accommodating cavity 130, the air supply pipeline and the air return pipeline of the refrigeration module can be connected with, for example, the air duct inside the cabinet 100, and the assembly of the refrigeration module is completed.

[0079] In addition, please refer to Figure 4 , Figure 4 The structural diagram of the control device 400 related to the hardware running environment of the embodiment of the present application is shown.

[0080] As shown in Figure 4 , the control device 400 can include a processor 410, such as a central processing unit (CPU), a communication bus 420, a user interface 430, a network interface 440, and a memory 450. The communication bus 420 is used to realize the connection and communication between at least part of the components. The user interface 430 can include a display, an input unit such as a keyboard, and the optional user interface 430 can also include a standard wired interface, a wireless interface. The network interface 440 can optionally include a standard wired interface, a wireless interface (such as a wireless fidelity (WIreless-FIdelity, WI-FI) interface). The memory 450 can be a high-speed random access memory (RAM) storage, or a stable non-volatile memory (NVM) such as a disk storage. The memory 450 can also be an independent storage device from the aforementioned processor 410.

[0081] Those skilled in the art can understand that Figure 4 the structure shown in the above description does not constitute a limitation on the control device 400, and can include more or fewer components than the diagram, or combine certain components, or different component arrangements.

[0082] As shown in Figure 4 , the memory 450 as a storage medium can include an operating system, a network communication module, a user interface module, and an anti-condensation control program of the refrigeration equipment.

[0083] In addition, based on the structural features of the refrigeration equipment, the application further provides a defrosting control method of the refrigeration equipment. Figures 5 to 10 The application provides a specific embodiment of the defrosting control method of the refrigeration equipment.

[0084] Please refer to Figure 5 In the first embodiment of the defrosting control method of the refrigeration equipment, as described above, the refrigeration equipment comprises a cabinet 100 and a defrosting device 300, the cabinet 100 defines a freezing chamber 110, the defrosting device 300 comprises a defrosting pipe 310 and an adjusting component 320, the defrosting pipe 310 is arranged in a closed loop along the circumference of the freezing chamber 110 and is used to circulate heat exchange liquid, and the adjusting component 320 is used to adjust the flow and / or heat of the heat exchange liquid in the defrosting pipe 310; the defrosting control method of the refrigeration equipment comprises the following steps.

[0085] Step S100: obtaining an actual temperature difference between the fluid temperature in the defrosting pipe 310 and the dew point temperature.

[0086] It can be understood that, by analyzing the performance of the refrigeration equipment, an initial output parameter of the adjusting component 320 of the refrigeration equipment can be preset in advance. When the refrigeration equipment is started, the adjusting component 320 is enabled to directly operate according to the initial output parameter, without the need for the user to specially configure, and without the need for first enabling each sensor to sense and obtain reference data and then configuring the initial output parameter of the adjusting component 320 according to the reference data, which helps to simplify the operation process when the refrigeration equipment is started.

[0087] When the adjusting component 320 operates according to the initial output parameter to the first time, the fluid temperature of the defrosting pipe 310 or the heat exchange liquid in the defrosting pipe 310 and the dew point temperature at the freezing chamber 110 are obtained.

[0088] The fluid temperature can be sensed by a temperature sensor 330 arranged at the defrosting pipe 310, and the temperature sensor 330 is electrically connected to the control device 400. The dew point temperature at the freezing chamber 110 can be directly set by the user, automatically set by the system by default, or in an embodiment, the step of obtaining the dew point temperature comprises the following steps.

[0089] Step S110: obtaining the ambient temperature and the ambient humidity.

[0090] Step S120: searching for the dew point temperature matching the ambient temperature and the ambient humidity in a preset database.

[0091] It can be understood that, since the refrigeration device integrates multiple functions, the control device 400 can directly query the above-mentioned data when other inherent functions need to collect the ambient temperature and the ambient humidity, and store the collected ambient temperature value and ambient humidity value in the memory of the control system. Alternatively, the refrigeration device is specially provided with a temperature sensing component and a humidity sensing component for the anti-condensation device 300 to respectively sense the ambient temperature value and the ambient humidity value in real time.

[0092] The control device 400 is pre-stored with a database about the dew point temperature, or the control device 400 can call the database about the dew point temperature at any time. In the database, the ambient temperature value, the ambient humidity value and the dew point temperature are one-to-one mapped and associated, so that when the ambient temperature value and the ambient humidity value in actual application are known, the dew point temperature matched therewith can be directly mapped and associated.

[0093] Step S200: obtaining the target output parameter of the adjusting component 320 according to the actual temperature difference;

[0094] It can be understood that the dew point temperature is a target temperature capable of realizing the anti-condensation function, and the fluid temperature is the temperature of the remaining heat of the heat exchange liquid after at least one circulation. When the temperature difference obtained by subtracting the dew point temperature from the fluid temperature is large, it indicates that the remaining heat is large after the heat exchange realizes the anti-condensation function, that is, the total heat participating in the heat exchange is large. Conversely, when the temperature difference obtained by subtracting the dew point temperature from the fluid temperature is small, it indicates that the remaining heat is small after the heat exchange realizes the anti-condensation function, that is, the total heat participating in the heat exchange is small. The adjusting component 320 is used to adjust the flow and / or heat at the anti-condensation pipe 310, and the flow is the flow rate and / or liquid amount of the heat exchange liquid, that is, to adjust the total heat participating in the heat exchange. The target output parameter of the adjusting component 320 can determine the target total heat participating in the heat exchange.

[0095] It should be noted that the output parameter of the adjusting component 320 is not specifically limited, but when the adjusting component 320 is a mechanism such as a pump body 321, the size of the output parameter of the adjusting component 320 is positively correlated with the flow rate and / or liquid amount of the liquid after being adjusted by the adjusting component 320, that is, when the output parameter of the adjusting component 320 increases, the liquid amount and / or flow rate after being adjusted by the adjusting component 320 increases; conversely, when the output parameter of the adjusting component 320 decreases, the liquid amount and / or flow rate after being adjusted by the adjusting component 320 decreases.

[0096] In addition, when the adjusting component 320 is a heating component 322 or the like, the output parameter of the adjusting component 320 can adjust the heat carried by the heat exchange liquid, and by increasing the power of the heating component 322, the heat carried by the heat exchange liquid can be increased; conversely, by reducing the power of the heating component 322, the heat carried by the heat exchange liquid can be reduced.

[0097] Step S300: controlling the adjusting component 320 to intermittently work according to the target output parameter, so that the actual temperature difference is maintained within the set temperature difference range.

[0098] In the embodiment, when the adjusting component 320 continuously works according to the target output parameter, it can be ensured that the anti-condensation strength of the anti-condensation device 300 is sufficient and maintained at the optimal anti-condensation strength. However, since the required accuracy is relatively low when the refrigeration equipment performs the anti-condensation function, and a certain temperature error is allowed, if the anti-condensation strength of the refrigeration equipment is always maintained at the optimal anti-condensation strength, the energy consumption is easily increased. When the adjusting component 320 is controlled to intermittently work according to the target output parameter, and the actual temperature difference is maintained within the set temperature difference range, the anti-condensation strength of the anti-condensation device 300 can be dynamically balanced near the optimal anti-condensation strength, which can be within the allowed temperature error, and also helps to reduce the energy consumption.

[0099] In the technical solution provided by the present application, when the anti-condensation pipe is connected to the heat exchange liquid, the anti-condensation pipe can conduct the temperature of the heat exchange liquid to the cabinet 100 due to its heat conduction performance, so as to prevent the temperature at the position from being too low to cause condensation. The control device 400 controls the adjusting component 320 to work according to the initial output parameter, and adjusts the anti-condensation pipe 310 to normally output heat. The control device 400 calculates the actual temperature difference according to the real-time acquired outlet temperature and dew point temperature, and then determines the current anti-condensation strength of the anti-condensation device 300. The control device 400 determines the target output parameter of the adjusting component 320 according to the current anti-condensation strength, that is, determines the optimal anti-condensation strength of the anti-condensation device 300. When the adjusting component 320 is controlled to intermittently work according to the target output parameter, the anti-condensation strength of the anti-condensation device 300 can be controlled at the optimal anti-condensation strength, and the dynamic balance of the whole machine at the optimal anti-condensation strength is realized, which helps to reduce the energy consumption of the whole machine and save the energy of the whole machine.

[0100] The initial output parameter can be determined according to actual needs. According to the size relationship between the initial output parameter and the target output parameter determined according to actual needs, the manner of obtaining the target output parameter of the adjusting component 320 in step S200 can be determined. For example, when the initial output parameter is greater than the target output parameter, the adjusting component 320 can be controlled to reach the target output parameter by reducing the output parameter of the adjusting component 320; conversely, when the initial output parameter is less than the target output parameter, the adjusting component 320 can be controlled to reach the target output parameter by increasing the output parameter of the adjusting component 320.

[0101] In an embodiment, before the step S100 of obtaining the actual temperature difference between the fluid temperature and the dew point temperature in the anti-condensation pipe 310, the method further comprises:

[0102] The adjusting component 320 is controlled to operate at the maximum output parameter.

[0103] It can be understood that the initial output parameter is the maximum output parameter of the adjusting component 320. Please refer to Figure 10 When the adjusting component 320 is the pump body 321 and the heating component 322, the pump body 321 and the heating component 322 can be controlled to operate at the maximum output parameter when the entire refrigeration equipment is powered on. In this way, the power of the anti-condensation device 300 can be increased to the maximum, so that the heat exchange liquid in the anti-condensation device 300 rapidly increases the fluid temperature; and when the actual temperature difference is maintained within the set temperature difference range and during the intermittent operation, the output parameter of the adjusting component 320 is less than the initial output parameter, that is, less than the maximum output parameter, which helps to reduce energy consumption.

[0104] Next, please refer to Figure 6 In the second embodiment of the anti-condensation control method of the refrigeration equipment provided by the application, the step S200 of obtaining the target output parameter of the adjusting component 320 according to the actual temperature difference comprises:

[0105] The step S210 of reducing the output parameter of the adjusting component 320 until the actual temperature difference is within the set temperature difference range, and determining the current output parameter of the adjusting component 320 as the target output parameter when the actual temperature difference is not less than the first threshold value.

[0106] The first threshold value is greater than the maximum value of the set temperature difference range.

[0107] In this embodiment, the control device 400 pre-sets the first threshold value. It can be understood that the first threshold value is used to determine whether the current anti-condensation intensity of the anti-condensation device 300 reaches the required:

[0108] When the control device 400 determines that the actual temperature difference is less than the first threshold value, that is, the difference between the fluid temperature and the dew point temperature is small, the heat carried by the heat exchange liquid is just enough, or even insufficient, to prevent the condensation from being generated at the freezing chamber 110, resulting in unstable anti-condensation effect of the anti-condensation device 300. Since the pump body 321 and the heating component 322 in the adjusting component 320 are currently in 100% output, it can be basically determined that the current state is not caused by insufficient output parameter of the adjusting component 320, but possibly caused by insufficient working time of the adjusting component 320. Therefore, the control device 400 can control the adjusting component 320 to continue working for a period of time, and continue to detect and calculate the actual temperature difference in real time or according to a set period, and continuously compare the size relationship between the actual temperature difference and the first threshold value.

[0109] Further, when the actual temperature difference is just equal to the first threshold value, or the actual temperature difference is just greater than the first threshold value, the control device 400 can record the required time from the start of 100% output of the adjusting component 320 to the current state, and update the time as the modified first time and store it. When the refrigeration equipment is powered on again, the size relationship between the actual temperature difference and the first threshold value can be compared and confirmed after the modified first time.

[0110] Of course, when the control device 400 determines that the actual temperature difference is not less than the first threshold value, that is, the difference between the fluid temperature and the dew point temperature is large, the heat carried by the heat exchange liquid is sufficient to prevent the condensation from being generated at the freezing chamber 110, and even has surplus heat. At this time, the control device 400 can control the output parameter of the adjusting component 320 to be reduced, and detect the actual temperature difference between the fluid temperature and the dew point temperature in real time. Until the actual temperature difference is within the set temperature difference range, it is determined that the current output parameter of the adjusting component 320 is the target output parameter.

[0111] The difference between the first threshold value and the maximum value of the set temperature difference range should not be too large. If it is too large, when it is determined that the actual temperature difference is not less than the first threshold value, the output parameter of the adjusting component 320 needs to be reduced for a long time and by a large value to obtain the target output parameter, which easily prolongs the adjustment time and reduces the timeliness and effectiveness of the adjustment. Conversely, if it is too small, when it is determined that the actual temperature difference is not less than the first threshold value, the adjustment of the output parameter of the adjusting component 320 is meaningless. Therefore, the difference between the first threshold value and the maximum value of the set temperature difference range needs to be set within an appropriate range. For example, in the present embodiment, the difference between the first threshold value and the maximum value of the set temperature difference range can be not greater than 1°C.

[0112] In addition, referring to Figure 7 In the third embodiment of the anti-condensation control method of the refrigeration equipment provided by the present application, the step S210 of reducing the output parameter of the adjusting component 320 includes:

[0113] Step S211: The output parameter of the adjusting component 320 is reduced in a segmented and stepped manner.

[0114] It can be understood that there are various ways to reduce the adjusting component 320. For example, the output parameter of the adjusting component 320 can be linearly reduced according to a linear function relationship or a quadratic function relationship between time and the output parameter, but this will increase the operation burden of the control device 400. In the present embodiment, the control device 400 reduces the output parameter of the adjusting component 320 in a segmented and stepped manner, sets multiple stepped intervals for the output of the adjusting component 320 in a decreasing order, and the maximum value of the output parameter of the former one of each two adjacent stepped intervals is not greater than the minimum value of the output parameter of the latter one of the two adjacent stepped intervals, so that the adjusting component 320 is adjusted to operate according to the output parameter of the former stepped interval for a second time, and then the adjusting component 320 is adjusted to operate according to the output parameter of the latter stepped interval after the heat exchange liquid stably flows in the anti-condensation pipe 310 for a second time and obtains the instant feedback at the temperature sensor 330. This not only reduces the operation burden of the control device 400, but also is more suitable for the application scenario of the heat exchange liquid flowing in the anti-condensation pipe 310.

[0115] Of course, each stepped interval can be determined according to actual needs, and the difference between each two adjacent stepped intervals can be set to be the same, that is, the output parameter of the adjusting component 320 is reduced in an arithmetic progression; or the difference between each two adjacent stepped intervals can be set to be at least partially different, that is, the output parameter of the adjusting component 320 is reduced in a non-arithmetic progression.

[0116] In the present embodiment, referring toFigure 10 The pump body 321 and / or the heating component 322 can be controlled to decrease in equal intervals from an initial output parameter, i.e. 10% of the maximum output parameter.

[0117] Further, referring to Figure 8 In the fourth embodiment of the anti-condensation control method of the refrigeration equipment, after the output parameter of the adjusting component 320 is decreased when the target temperature is not less than the first threshold value in step S210, the method further comprises:

[0118] Step S212: determining that the adjusting component 320 is faulty when the output parameter of the adjusting component 320 gradually decreases to the minimum threshold value and the target temperature is not within the set temperature difference range.

[0119] It can be understood that when the control device 400 controls the output parameter of the adjusting component 320 to continuously decrease to the minimum threshold value, but the target temperature is still not within the set temperature difference range, it can be determined that the adjusting component 320 has a certain fault, which may increase the power consumption of the adjusting component 320. At this time, the refrigeration equipment can further comprise a prompt device electrically connected to the control device 400, and the control device 400 can control the prompt device to work and prompt the user. The prompt device can issue any suitable form of prompt information, such as audio, visual image, etc., so the prompt device can be a buzzer, an audio player, a display screen, an indicator light, etc., and the prompt device can also be a user terminal electrically connected to the refrigeration equipment, such as an APP program in a user's mobile terminal, such as a mobile phone, a computer, a tablet, etc.

[0120] Further, the minimum threshold value is not greater than 10% of the maximum output parameter. In this way, a sufficient adjustment range can be provided for the adjustment of the output parameter of the adjusting component 320, so that the adjusting component 320 can adjust to obtain the target output parameter, and the adjustment range is sufficient to ensure the normal operation of the anti-condensation device 300 in the refrigeration equipment.

[0121] Further, referring to Figure 9 In the fifth embodiment of the anti-condensation control method of the refrigeration equipment, in step S300, the intermittent operation of the adjusting component 320 according to the target output parameter comprises:

[0122] Step S310: controlling the adjusting component 320 to operate according to the target output parameter for a set time and then stop;

[0123] Step S320: controlling the adjusting component 320 to start and operate according to the target output parameter when the actual temperature difference is not greater than the second threshold value.

[0124] wherein the second threshold value is less than the minimum value of the set temperature difference range.

[0125] In the embodiment, the intermittent operation is that, when it is determined that the actual temperature difference is within the set temperature difference range, the adjusting component 320 is first controlled to operate according to the target output parameter for a set time. The set time can be a default value of the refrigeration equipment, can be a set value set by the user based on the operation interface of the refrigeration equipment, or can be a value calculated by the refrigeration equipment in real time through a specific algorithm and matched with the current anti-condensation state. The adjusting component 320 stops operating after operating according to the target output parameter for the set time, and the remaining heat carried by the heat exchange liquid continues to exchange heat.

[0126] Then, when the actual temperature difference is not greater than the second threshold value, that is, it is determined that the remaining heat carried by the heat exchange liquid is insufficient to play an anti-condensation role on the freezing chamber 110, the control device 400 controls the adjusting component 320 to start and operate according to the target output parameter, and returns to the step S310, so as to circulate until the refrigeration equipment is powered off.

[0127] Please refer to Figure 10 In actual application, when the refrigeration equipment is powered on, the control device 400 controls the pump body 321 and the heating component 322 in the adjusting component 320 to operate at 100% output, at the same time, the control device 400 determines the dew point temperature T0 by acquiring the ambient temperature and the ambient humidity, senses the fluid temperature T in the anti-condensation pipe 310 by enabling the temperature sensor 330, and calculates the actual temperature difference T-T0 (specifically, any form of comparison between the fluid temperature T, the actual temperature difference and the dew point temperature T0 can be converted); when the actual temperature difference T-T0 is greater than the first threshold value 3℃, the control device 400 controls the pump body 321 and / or the heating component 322 to reduce the output, and the specific reduction method can be to reduce the output by 10% every certain period, and the lowest reduction is to 10% output. Continue to determine the actual temperature difference T-T0, when the actual temperature difference T-T0 is within the set temperature difference range 2℃, the current output of the pump body 321 and / or the heating component 322 can be recorded as the target output parameter, and the corresponding pump body 321 and / or the heating component 322 is controlled to operate according to the target output parameter for a time t1, and then the pump body 321 and / or the heating component 322 is turned off; continue to determine the actual temperature difference T-T0, when the actual temperature difference T-T0 is less than the second threshold value 1℃, restart the pump body 321 and / or the heating component 322, control the pump body 321 and / or the heating component 322 to operate according to the target output, and continue to circulate according to the above steps until the refrigeration equipment is powered off.

[0128] The above merely describes the preferred embodiments of the present application, and is not intended to limit the patent scope of the present application. Any equivalent structural changes made according to the content of the present application specification and drawings, or direct / indirect application in other related technical fields, are included in the patent protection scope of the present application.

Claims

1. A control method of anti-condensation of a refrigeration apparatus, characterized by, The refrigeration equipment comprises a cabinet and an anti-condensation device, the cabinet defines a freezing chamber, the anti-condensation device comprises an anti-condensation pipe and an adjusting component, the anti-condensation pipe is arranged in a closed loop along the circumference of the freezing chamber and is used to circulate heat exchange liquid, and the adjusting component is used to adjust the flow and / or heat of the heat exchange liquid in the anti-condensation pipe. The anti-condensation control method of the refrigeration equipment comprises: obtaining an actual temperature difference between the fluid temperature and the dew point temperature in the anti-condensation pipe; obtaining a target output parameter of the adjusting component according to the actual temperature difference; controlling the adjusting component to intermittently work according to the target output parameter, so that the actual temperature difference is maintained within a set temperature difference range; the step of obtaining the target output parameter of the adjusting component according to the actual temperature difference comprises: when the actual temperature difference is not less than a first threshold value, reducing the output parameter of the adjusting component until the actual temperature difference is within the set temperature difference range, and determining the current output parameter of the adjusting component as the target output parameter; wherein the first threshold value is greater than the maximum value of the set temperature difference range; the step of reducing the output parameter of the adjusting component comprises: segmented stepwise decreasing the output parameter of the adjusting component.

2. The anti-condensation control method of a refrigerating apparatus according to claim 1, characterized by, Before the step of obtaining the actual temperature difference between the fluid temperature and the dew point temperature in the anti-condensation pipe, the method further comprises: controlling the adjusting component to operate according to a maximum output parameter.

3. The anti-condensation control method of a refrigerating apparatus according to claim 1, characterized by, The difference between the first threshold value and the maximum value of the set temperature difference range is not greater than 1℃.

4. The anti-condensation control method of a refrigerating apparatus according to claim 1, characterized by, After the step of reducing the output parameter of the adjusting component when the actual temperature difference is not less than the first threshold value, the method further comprises: when the output parameter of the adjusting component is reduced to a minimum threshold value and the actual temperature difference is not within the set temperature difference range, determining that the adjusting component is faulty.

5. The anti-condensation control method of a refrigerating apparatus according to claim 4, characterized by, The minimum threshold value is not greater than 10% of the maximum output parameter of the adjusting component.

6. The anti-condensation control method of a refrigerating apparatus according to claim 1, characterized by, The step of controlling the adjusting component to intermittently work according to the target output parameter comprises: controlling the adjusting component to operate according to the target output parameter for a set time and then stop; when the actual temperature difference is not greater than a second threshold value, controlling the adjusting component to start and operate according to the target output parameter; wherein the second threshold value is less than the minimum value of the set temperature difference range.

7. A refrigeration appliance characterized in that, comprises: a cabinet formed with a freezing chamber; a refrigeration module detachably connected to the cabinet and refrigerating the freezing chamber; an anti-condensation device comprising an anti-condensation pipe and an adjusting component, the anti-condensation pipe is arranged in a closed loop along the circumference of the freezing chamber and is used to circulate heat exchange liquid, and the adjusting component is used to adjust the flow and / or heat of the heat exchange liquid in the anti-condensation pipe; a temperature sensor arranged in the anti-condensation pipe to sense the fluid temperature of the heat exchange liquid in the anti-condensation pipe; and ​ A control device electrically connected with the temperature sensor and the adjusting component, the control device comprising a memory, a processor, and a defrosting control program of the refrigeration equipment stored in the memory and executable on the processor, the defrosting control program of the refrigeration equipment being configured to implement the steps of the defrosting control method of the refrigeration equipment according to any one of claims 1 to 6.

8. The refrigeration appliance of claim 7, wherein, The adjusting component comprises a pump body and / or a heating component.

9. The refrigeration appliance of claim 7, wherein, The rear bottom of the box body is provided with a receiving cavity adjacent to the freezing chamber. The refrigeration equipment comprises a condenser, an evaporator, and a compressor, the condenser, the evaporator, and the compressor being connected in sequence to form a refrigeration circuit, and the refrigeration equipment being accommodated in the receiving cavity.

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