Refrigerating system of refrigerating equipment, refrigerating equipment and control method of refrigerating equipment

Abstract

The invention belongs to the technical field related to refrigeration, and particularly relates to a refrigeration system of refrigeration equipment, the refrigeration equipment and a control method of the refrigeration equipment. An anti-condensation pipe; the refrigeration circulation loop comprises a main pipeline, a first refrigerant branch and a second refrigerant branch, the first refrigerant branch and the second refrigerant branch are communicated with the main pipeline, the compressor, the condenser and the evaporator are arranged in the main pipeline, and the anti-condensation pipe is arranged in the second refrigerant branch; the valve body comprises an inlet, a first outlet and a second outlet, the inlet is communicated with the outlet of the condenser, the first outlet is communicated with the first refrigerant branch, the second outlet is communicated with the second refrigerant branch, and the first outlet and the second outlet both have a full-open state, a throttling state and a closed state. Dynamic and accurate condensation heat management can be realized, and the refrigeration operation energy consumption of the system is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of refrigeration, and more particularly, to a refrigeration system of a refrigeration device, the refrigeration device and a control method thereof. BACKGROUND

[0002] As the most commonly used low-temperature preservation household appliance, the refrigeration temperature inside the refrigeration device is greatly different from the ambient temperature during use. When the humidity of the ambient environment is high, condensation will occur in some parts of the refrigeration device, for example, the inner container and the position corresponding to the door seal of the side plate of the refrigeration device. If the refrigeration device has long-term condensation, it will cause mold on the door seal and water accumulation in the area where the refrigeration device is placed, affecting the user experience.

[0003] To solve the condensation problem of the refrigeration device, the related technology generally provides a condensation prevention pipe in the interlayer of the tank door frame. The condensation prevention pipe uses the high-temperature and high-pressure refrigerant of the refrigeration system to heat the door frame to prevent condensation. However, the risk of condensation of the refrigeration device is different in different environmental conditions and different user scenarios. The refrigeration device will not produce condensation at some moments. The continuous operation of the condensation prevention pipe may cause additional heat to enter the compartment of the refrigeration device, increasing the operating energy consumption of the refrigeration device. SUMMARY

[0004] The purpose of the present application is to provide a refrigeration system of a refrigeration device, the refrigeration device and a control method thereof. The refrigeration system can adjust the refrigerant flow according to the environmental information of the refrigeration device and the operating condition of the compressor, realize dynamic and accurate condensation heat management, maximize the avoidance of additional heat entering the compartment, and reduce the system refrigeration operating energy consumption.

[0005] In a first aspect, the present application provides a refrigeration system of a refrigeration device, comprising: a refrigeration assembly comprising a compressor, a condenser and an evaporator; a condensation prevention pipe; a refrigeration cycle circuit comprising a main pipeline and a first refrigerant branch and a second refrigerant branch respectively communicated with the main pipeline, the compressor, the condenser and the evaporator being arranged in the main pipeline, and the condensation prevention pipe being arranged in the second refrigerant branch; a valve body comprising an inlet, a first outlet and a second outlet, the inlet being communicated with the outlet of the condenser, the first outlet being communicated with the first refrigerant branch, and the second outlet being communicated with the second refrigerant branch, the first outlet and the second outlet each having a fully open state, a throttling state and a closed state.

[0006] According to the refrigeration system, refrigeration equipment, and control method of the refrigeration equipment provided in the embodiments of this application, the refrigeration system includes: a refrigeration component, an anti-condensation pipe, a refrigeration circulation loop, and a valve body. The refrigeration circulation loop includes a main pipeline and a first refrigerant branch and a second refrigerant branch respectively connected to the main pipeline. The anti-condensation pipe is disposed in the second refrigerant branch. The valve body controls the flow of refrigerant in the first or second refrigerant branch through an on / off function, so that only the second refrigerant branch where the anti-condensation pipe is located is activated when anti-condensation is required. At the same time, the valve body also has a throttling function, which controls the valve body to be in a throttling state according to environmental information and the operating conditions of the refrigeration component, so as to adjust the refrigerant flow rate entering the first or second refrigerant branch, thereby achieving dynamic and precise condensation heat management, minimizing the entry of additional heat into the compartment, and reducing the energy consumption of the system refrigeration operation.

[0007] In addition, the refrigeration system according to this application may also have the following additional technical features:

[0008] In some embodiments of this application, the valve body includes a valve seat and a valve block coaxially arranged. An inlet is provided on the end face or side of the valve seat, and the end face of the valve seat has a first outlet and a second outlet spaced apart circumferentially. The first outlet includes a first through hole and a first arcuate groove communicating with the first through hole; the second outlet includes a second through hole and a second arcuate groove communicating with the second through hole. The valve block includes a connecting portion with a notch. The connecting portion fits against the end face of the valve seat and is rotatable relative to the valve seat, allowing the notch to selectively communicate with either the first outlet or the second outlet. When the notch communicates with the first through hole, the first outlet is fully open; when the notch communicates with the first arcuate groove, the first outlet is in a throttling state; when the notch communicates with the second through hole, the second outlet is fully open; when the notch communicates with the second arcuate groove, the second outlet is in a throttling state; when the connecting portion covers the first outlet or the second outlet, the first outlet or the second outlet is closed.

[0009] In some embodiments of this application, the refrigeration assembly further includes a first throttling element and a second throttling element, wherein the first throttling element is disposed in the first refrigerant branch, the second throttling element is disposed in the second refrigerant branch, and the anti-condensation pipe is disposed between the valve body and the second throttling element.

[0010] In some embodiments of this application, the first outlet of the valve body is connected to the inlet of the first throttling element, the second outlet is connected to the inlet of the anti-condensation pipe, and the inlet of the evaporator is connected to the outlet of the first throttling element and the outlet of the second throttling element, respectively.

[0011] In some embodiments of this application, the flow rate of the first outlet in the throttling state is less than the flow rate of the first throttling element, and the flow rate of the second outlet in the throttling state is less than the flow rate of the second throttling element.

[0012] Secondly, this application proposes a refrigeration device, comprising: a housing with a compartment inside; a refrigeration system as described above, wherein the evaporator of the refrigeration system is used to refrigerate the compartment; a sensor assembly for detecting environmental information of the refrigeration device; and a control unit electrically connected to the refrigeration assembly, valve body, and sensor assembly of the refrigeration system, wherein the control unit is configured to control the operation of the valve body according to the environmental information and the operating conditions of the compressor.

[0013] In some embodiments of this application, the sensor assembly includes a first temperature sensor, which is disposed in the second refrigerant branch of the refrigeration system and located between the second outlet of the valve body and the anti-condensation pipe.

[0014] Thirdly, this application proposes a control method for a refrigeration device, applied to the refrigeration device as described above. The control method includes: acquiring environmental information of the refrigeration device and the operating conditions of the compressor; and controlling the operation of the valve body according to the environmental information and the operating conditions of the compressor.

[0015] In some embodiments of this application, the environmental information includes the ambient temperature of the refrigeration equipment, the ambient relative humidity, and the door frame temperature of the compartment. The valve body has an inlet, a first outlet, and a second outlet. Controlling the valve body operation based on the environmental information and the compressor's operating conditions includes: calculating the ambient condensation temperature and a condensation temperature threshold based on the ambient temperature and ambient relative humidity; in refrigeration mode, if the door frame temperature is less than or equal to the condensation temperature threshold, controlling the first outlet to close and the second outlet to be fully open if the compressor speed is greater than a first speed threshold; and controlling the first outlet to close and the second outlet to be in a throttling state if the compressor speed is less than or equal to the first speed threshold.

[0016] In some embodiments of this application, the control method of the refrigeration equipment further includes: when the door frame temperature is greater than the condensation temperature threshold, controlling the second outlet to close and the first outlet to be fully open when the compressor speed is greater than the first speed threshold; and controlling the second outlet to close and the first outlet to be in a throttling state when the compressor speed is less than or equal to the first speed threshold.

[0017] In some embodiments of this application, the environmental information includes relative humidity. The valve body has an inlet, a first outlet, and a second outlet. Controlling the valve body operation based on the environmental information and the compressor's operating conditions includes: when the relative humidity is greater than a humidity threshold, and the compressor speed is greater than a second speed threshold, controlling the first outlet to close and the second outlet to be fully open; when the compressor speed is less than or equal to the second speed threshold, controlling the first outlet to close and the second outlet to be in a throttling state.

[0018] In some embodiments of this application, the control method for the refrigeration equipment further includes: when the relative humidity of the environment is less than or equal to a humidity threshold, controlling the second outlet to close and the first outlet to be fully open based on the compressor speed being greater than a second speed threshold; and controlling the second outlet to close and the first outlet to be in a throttling state based on the compressor speed being less than or equal to a second speed threshold.

[0019] In some embodiments of this application, the control method for the refrigeration equipment further includes: opening the valve body before the compressor starts running, and controlling the first outlet of the valve body to be in a throttling state and the second outlet to be in a closed state; and closing the valve body after the compressor stops.

[0020] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0021] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. Wherein:

[0022] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. Wherein:

[0023] Figure 1 This is a schematic diagram of the structure of a refrigeration system of a refrigeration device according to an embodiment of this application;

[0024] Figure 2 for Figure 1 The diagram shows an exploded view of the valve body in the refrigeration system.

[0025] Figure 3 This is a flowchart illustrating a control method for a refrigeration device according to an embodiment of this application;

[0026] Figure 4 This is a detailed flowchart of a control method for a refrigeration device according to an embodiment of this application;

[0027] Figure 5 This is a schematic diagram of the structure of a refrigeration system of a refrigeration device according to another embodiment of this application;

[0028] Figure 6This is a detailed flowchart of a control method for a refrigeration device according to another embodiment of this application.

[0029] The labels in the attached diagram are as follows:

[0030] 10. Refrigeration system; 1. Refrigeration components; 11. Compressor; 12. Condenser; 13. Evaporator; 14. First throttling element; 15. Second throttling element; 2. Anti-condensation pipe; 3. Refrigeration cycle loop; 30. Main pipeline; 31. First refrigerant branch; 32. Second refrigerant branch; 5. First temperature sensor;

[0031] 4. Valve body; 40. Inlet; 41. First outlet; 411. First through hole; 412. First arc groove; 42. Second outlet; 421. Second through hole; 422. Second arc groove; 43. Valve seat; 44. Valve block;

[0032] 441. Connecting part; 442. Notch. Detailed Implementation

[0033] Exemplary embodiments of this application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of this application and to fully convey the scope of this application to those skilled in the art.

[0034] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0035] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0036] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0037] Figure 1 This is a schematic diagram of the structure of a refrigeration system according to an embodiment of the refrigeration device of this application. (See attached diagram.) Figure 1 The refrigeration system 10 of a refrigeration device according to an embodiment of this application includes: a refrigeration component 1, an anti-condensation pipe 2, a refrigeration circulation loop 3, and a valve body 4.

[0038] The refrigeration assembly 1 includes a compressor 11, a condenser 12, and an evaporator 13.

[0039] The anti-condensation pipe 2 is installed in the compartment of the refrigeration equipment; more specifically, it is installed within the interlayer of the compartment's door frame. The compartments can be classified as refrigeration compartments or freezer compartments based on their temperature range; no specific compartment type is limited here. The anti-condensation pipe 2 can be made of plastic and is used to circulate refrigerant and other refrigerants. It has high corrosion resistance and extends its service life.

[0040] The refrigeration cycle circuit 3 includes a main pipe 30 and a first refrigerant branch 31 and a second refrigerant branch 32 connected to the main pipe 30. The compressor 11, condenser 12 and evaporator 13 are installed in the main pipe 30, and the anti-condensation pipe 2 is installed in the second refrigerant branch 32.

[0041] The valve body 4 includes an inlet 40, a first outlet 41 and a second outlet 42. The inlet 40 is connected to the outlet of the condenser 12. The first outlet 41 is connected to the first refrigerant branch 31 and the second outlet 42 is connected to the second refrigerant branch 32. Both the first outlet 41 and the second outlet 42 have a fully open state, a throttling state and a closed state.

[0042] In related technologies, valve bodies used in refrigeration equipment mostly only have on / off functions and lack throttling functions, or they use electronic expansion valves, which have throttling functions but are usually one inlet and one outlet, and cannot achieve flow path switching. In this embodiment, the valve body 4 not only has on / off functions, enabling the switching of refrigerant between the first refrigerant branch 31 and the second refrigerant branch 32, but also has a throttling function, which can control the refrigerant flow rate entering the first refrigerant branch 31 or the second refrigerant branch 32.

[0043] Because the anti-condensation pipe 2 transfers heat into the cabinet while preventing condensation, it causes a loss of cold air in the storage area, i.e., the compartment. To ensure that the temperature inside the compartment remains at a normal level, the refrigeration equipment needs to increase its cooling capacity to compensate for the cold air loss caused by the anti-condensation pipe 2. In this embodiment, the second refrigerant branch 32 where the anti-condensation pipe 2 is located can be opened by the valve body 4. When there is no risk of condensation in the system, in order to reduce power consumption, the second refrigerant branch 32 where the anti-condensation pipe 2 is located can be closed by the valve body 4 to prevent additional heat load from entering the compartment. In addition, the valve body 4 has a throttling function and can switch between a fully open state and a throttling state. This allows it to match the appropriate flow rate according to environmental information and the operating conditions of the compressor 11. Regardless of whether there is a risk of condensation, the flow rate into the first refrigerant branch 31 or the second refrigerant branch 32 can be adjusted by controlling the valve body 4 to be in a throttling state. This achieves dynamic and precise condensation heat management, which can both quickly cool the compartment and prevent condensation, and minimize the entry of additional heat into the compartment, thereby reducing the energy consumption of the refrigeration equipment.

[0044] The refrigeration system of the refrigeration equipment provided in this application embodiment includes a refrigeration component 1, an anti-condensation pipe 2, a refrigeration circulation loop 3, and a valve body 4. The refrigeration circulation loop 3 includes a main pipeline 30 and a first refrigerant branch 31 and a second refrigerant branch 32 respectively connected to the main pipeline 30. The anti-condensation pipe 2 is disposed in the second refrigerant branch 32. The valve body 4 controls the flow of refrigerant in the first refrigerant branch 31 or the second refrigerant branch 32 through an on / off function, so that only the second refrigerant branch 32 where the anti-condensation pipe 2 is located is activated when anti-condensation is required. At the same time, the valve body 4 also has a throttling function, which controls the valve body 4 to be in a throttling state according to environmental information and the operating conditions of the compressor, so as to regulate the flow rate entering the first refrigerant branch 31 or the second refrigerant branch 32, thereby achieving dynamic and precise condensation heat management, minimizing the entry of additional heat into the compartment, and reducing the energy consumption of the system refrigeration operation.

[0045] In some embodiments, the valve body 4 includes a valve seat 43 and a valve block 44 coaxially arranged. An inlet 40 is provided on the end face or side of the valve seat 43. The end face of the valve seat 43 has a first outlet 41 and a second outlet 42 spaced apart circumferentially. The first outlet 41 includes a first through hole 411 and a first arcuate groove 412 communicating with the first through hole 411. The second outlet 42 includes a second through hole 421 and a second arcuate groove 422 communicating with the second through hole 421. The valve block 44 includes a connecting portion 441 with a notch 442. The connecting portion 441 fits against the end face of the valve seat 43 and is rotatable relative to the valve seat 43. The notch 442 can selectively connect to either the first outlet 41 or the second outlet 42. When the notch 442 connects to the first through hole 411, the first outlet 41 is fully open; when the notch 442 connects to the first arc-shaped groove 412, the first outlet 41 is in a throttling state; when the notch 442 connects to the second through hole 421, the second outlet 42 is fully open; when the notch 442 connects to the second arc-shaped groove 422, the second outlet 42 is in a throttling state; when the connecting part 441 covers either the first outlet 41 or the second outlet 42, either the first outlet 41 or the second outlet 42 is closed. The width of the first arc-shaped groove 412 is smaller than the diameter of the first through hole 411, and the width of the second arc-shaped groove 422 is smaller than the diameter of the second through hole 421. The throttling flow rate of the first outlet 41 depends on the longitudinal cross-sectional area formed by the width and depth of the first arc-shaped groove 412, and the throttling flow rate of the second outlet 42 depends on the longitudinal cross-sectional area formed by the width and depth of the second arc-shaped groove 422.

[0046] like Figure 2As shown, the end face of the valve seat 43 is a flat mating surface, and the valve block 44 can fit against the end face of the valve seat 43 and rotate at a certain angle. The inlet 40 of the valve seat 43 is located on the side of the valve seat 43, and the first outlet 41 and the second outlet 42 are located on the end face of the valve seat 43, and are opened on a circle with different radii centered on the central axis of the valve seat 43, and are spaced apart by a certain distance. The valve body 4 also includes an inlet pipe, a first outlet pipe and a second outlet pipe fixedly connected to the valve seat 43. The inlet pipe is connected to the inlet 40, the first outlet pipe is connected to the first outlet 41, and the second outlet pipe is connected to the second outlet 42. The inlet pipe, the first outlet pipe and the second outlet pipe are respectively connected to the refrigeration cycle loop 3, which can make various combinations of throttling flow rates to meet the needs of the refrigeration system.

[0047] The valve body 4 may also include a control unit and a motor (not shown in the figure). The control unit controls the rotor of the motor to drive the valve block 44 to rotate relative to the valve seat 43. The connecting part 441 of the valve block 44 is used to rotate and cooperate with the end face of the valve seat 43. When the connecting part 441 rotates to cover the first outlet 41 or the second outlet 42 of the valve seat 43, the corresponding first outlet 41 or second outlet 42 is in a closed state, and the refrigerant cannot flow out from the first outlet 41 or the second outlet 42. Conversely, when the connecting part 441 rotates to a position where it does not cover the first outlet 41 or the second outlet 42, if the notch 442 is connected to the first through hole 411, the first outlet 41 is fully open, and the refrigerant flows directly out of the first through hole 411; if the notch 442 is connected to the first arc groove 412, the first outlet 41 is in a throttling state, and the refrigerant enters the first through hole 411 and then flows out of the first arc groove 412; if the notch 442 is connected to the second through hole 421, the second outlet 42 is fully open, and the refrigerant flows directly out of the second through hole 421; if the notch 442 is connected to the second arc groove 422, the second outlet 42 is in a throttling state, and the refrigerant enters the second through hole 421 and then flows out of the second arc groove 422.

[0048] It is understandable that the valve body 4 can have other structural forms, as long as it can realize the functions of switching on and off and throttling, and there are no restrictions here.

[0049] In some embodiments, the refrigeration assembly 1 further includes a first throttling element 14 and a second throttling element 15, wherein the first throttling element 14 is disposed in the first refrigerant branch 31, the second throttling element 15 is disposed in the second refrigerant branch 32, and the anti-condensation pipe 2 is disposed between the valve body 4 and the second throttling element 15. The first throttling element 14 and the second throttling element 15 can be, for example, but not limited to, capillary tubes. The high-temperature and high-pressure gas discharged from the outlet of the compressor 11 becomes liquid refrigerant after being condensed and cooled by the condenser 12. The first throttling element 14 and the second throttling element 15 can respectively impede, limit the flow, and reduce the pressure of the liquid refrigerant to become a low-temperature and low-pressure liquid, thereby improving the heat exchange efficiency of the condenser 12.

[0050] like Figure 1 As shown, the refrigeration cycle loop 3 includes a main pipe 30, a first refrigerant branch 31, and a second refrigerant branch 32. A valve body 4 is located at the connection between the first refrigerant branch 31 and the second refrigerant branch 32 and the main pipe 30. Through the switching function of the valve body 4, the refrigerant flowing in the refrigeration cycle loop 3 can include the following three circulation paths: First, the refrigerant starts from the outlet of the main pipe 30, flows back to the inlet of the main pipe 30 via the first refrigerant branch 31; second, the refrigerant starts from the outlet of the main pipe 30, flows back to the inlet of the main pipe 30 via the second refrigerant branch 32; third, the refrigerant starts from the outlet of the main pipe 30, flows back to the inlet of the main pipe 30 via the first refrigerant branch 31 and the second refrigerant branch 32 respectively. The refrigeration component 1 is installed in the refrigeration cycle loop 3 to achieve the refrigeration function through the refrigerant.

[0051] The anti-condensation pipe 2 is installed in the second refrigerant branch 32. When the valve body 4 connects the second refrigerant branch 32 and the main pipe 30, the refrigerant flows through the anti-condensation pipe 2, and the anti-condensation pipe 2 starts working to ensure the decondensation requirement of the refrigeration equipment. When the second refrigerant branch 32 and the main pipe 30 are not connected, the anti-condensation pipe 2 stops working. At this time, the power consumption of the refrigeration equipment is reduced by reducing the power consumption of the anti-condensation pipe 2. In other words, when the refrigeration equipment is operating under conditions that require decondensation, the valve body 4 connects the second refrigerant branch 32 and the main pipe 30 so that the anti-condensation pipe 2 can work; when the refrigeration equipment is operating under conditions that do not require decondensation, the valve body 4 only connects the first refrigerant branch 31 and the main pipe 30, and the anti-condensation pipe 2 stops working, thereby reducing the power consumption of the refrigeration equipment and thus reducing its overall power consumption.

[0052] In some embodiments, the inlet 40 of the valve body 4 is connected to the outlet of the condenser 12, the first outlet 41 is connected to the inlet of the first throttling element 14, the second outlet 42 is connected to the inlet of the anti-condensation pipe 2, and the inlet of the evaporator 13 is connected to the outlet of the first throttling element 14 and the outlet of the second throttling element 15, respectively.

[0053] like Figure 2As shown, when the refrigeration equipment is operating under conditions requiring decondensation, the first outlet 41 of the valve body 4 is closed and the second outlet 42 is opened, which connects the second refrigerant branch 32 and the main pipe 30 so that the anti-condensation pipe 2 can work; when the refrigeration equipment is operating under conditions not requiring decondensation, the first outlet 41 of the valve body 4 is opened and the second outlet 42 is closed, which connects the first refrigerant branch 31 and the main pipe 30, and the anti-condensation pipe 2 stops working, thereby reducing the power consumption of the refrigeration equipment and thus reducing the power consumption of the refrigeration equipment.

[0054] Furthermore, the first outlet 41 or the second outlet 42 of the valve body 4 has two states when open: fully open and throttling. The appropriate flow rate can be matched according to the operating conditions of the compressor 11. For example, when the compartment temperature is low and the compressor 11 speed is low, the second outlet 42 of the valve body 4 can be in throttling mode using a small flow rate, thereby reducing system energy consumption. When the compartment temperature is high and the compressor 11 speed is high, the first outlet 41 of the valve body 4 can be fully open using a large flow rate to quickly lower the compartment temperature. Therefore, regardless of whether the anti-condensation pipe 2 needs to work, the valve body 4 can switch between fully open and throttling modes, thus achieving dynamic and precise condensation heat management. This allows for rapid cooling of the compartment without condensation, while minimizing the entry of additional heat into the compartment, reducing the energy consumption of the refrigeration equipment.

[0055] In some embodiments, the flow rate of the first outlet 41 in the throttling state is less than the flow rate of the first throttling element 14, and the flow rate of the second outlet 42 in the throttling state is less than the flow rate of the second throttling element 15. With this configuration, the first outlet 41 and the second outlet 42 of the valve body 4 each have two different flow rates.

[0056] In addition, this application embodiment also provides a refrigeration device, including: a cabinet with compartments inside; a refrigeration system 10 as described above, wherein the evaporator 13 of the refrigeration system 10 is used to refrigerate the compartments; a sensor assembly for detecting environmental information of the refrigeration device; and a control unit electrically connected to the refrigeration assembly 1, valve body 4, and sensor assembly of the refrigeration system 10, respectively. The control unit is configured to control the operation of the valve body 4 according to the environmental information and the operating conditions of the compressor 11. The compartments can be divided into refrigeration compartments, freezer compartments, etc., according to the temperature range; no specific limitation is made to the specific compartment type of the refrigeration device here.

[0057] The sensor assembly is used to detect environmental information of the refrigeration equipment, which may include, but is not limited to, ambient temperature, ambient relative humidity, room temperature, room humidity, door frame temperature, etc.

[0058] The control unit is electrically connected to the refrigeration component 1, the sensor component and the valve body 4 respectively. The control unit is configured to control the operation of the valve body 4 according to environmental information and the operating conditions of the compressor.

[0059] In some embodiments, the sensor assembly includes a first temperature sensor 5 disposed at the door frame, an ambient temperature sensor or an ambient temperature and humidity sensor disposed within the door frame hinge cover, and a second temperature sensor and a humidity sensor disposed at the interior liner of the room.

[0060] In this embodiment, the first temperature sensor 5 is disposed in the second refrigerant branch 32, and is located between the second outlet 42 of the valve body 4 and the anti-condensation pipe 2. The first temperature sensor 5 is used to detect the temperature at the door frame of the compartment to determine whether condensation will occur at the door frame. The placement of the first temperature sensor 5 at the door frame is not fixed and can vary depending on the different structures of the refrigeration equipment. The second temperature sensor is used to detect the temperature of the compartment to determine whether the refrigeration equipment is in refrigeration mode. For example, in refrigeration mode, the temperature of the freezer compartment is generally not higher than -18°C, and the temperature of the refrigerator compartment is generally not higher than 4°C. The humidity sensor is used to detect the humidity of the compartment, and the ambient temperature sensor is used to detect the temperature of the environment around the refrigeration equipment. The ambient temperature and humidity sensor detects the temperature and humidity of the environment around the refrigeration equipment to determine the compressor's operating level and corresponding speed.

[0061] Figure 3 This is a flowchart illustrating a control method for a refrigeration device according to an embodiment of this application. Figure 3 As shown in the embodiments of this application, a control method for a refrigeration device is also provided, applied to the refrigeration device as described above. The control method includes:

[0062] Step S1: Obtain environmental information of the refrigeration equipment and operating conditions of compressor 11;

[0063] Step S2: Control valve 4 to work based on environmental information and the operating conditions of compressor 11.

[0064] In some embodiments, the environmental information includes ambient temperature, ambient relative humidity and the door frame temperature of the compartment. The valve body 4 has an inlet 40, a first outlet 41 and a second outlet 42. In step S2, controlling the operation of the valve body 4 according to the environmental information and the operating conditions of the compressor 11 includes the following steps S21 to S22.

[0065] Figure 4 This is a detailed flowchart of a control method for a refrigeration device according to an embodiment of this application. Figure 4 As shown, step S2 specifically includes:

[0066] Step S21: Calculate the ambient condensation temperature and condensation temperature threshold Ts based on the ambient temperature and relative humidity. The condensation temperature threshold Ts is the sum of the ambient condensation temperature and the preset temperature increment. The temperature increment is not fixed and can vary depending on the environmental conditions of different regions and the user's usage scenario. For example, when the ambient temperature is 32℃ and the ambient relative humidity is 50%, the ambient condensation temperature is approximately 20℃, and the preset temperature increment can be 3℃, then the condensation temperature threshold Ts is 23℃.

[0067] Step S22: When the door frame temperature is less than or equal to the condensation temperature threshold,

[0068] If the speed of compressor 11 is greater than the first speed threshold W1, control the first outlet 41 to close and the second outlet 42 to be fully open;

[0069] If the speed of compressor 11 is less than or equal to the first speed threshold W1, the first outlet 41 is closed and the second outlet 42 is in a throttling state.

[0070] In this embodiment, the temperature of the compartment determines whether it is in cooling mode. If the compartment is not in cooling mode, valve 4 is closed to maintain pressure. If the compartment is in cooling mode, and the door frame temperature is less than or equal to the condensation temperature threshold, it indicates that condensation is about to occur at the door frame. At this time, the speed of compressor 11 determines whether valve 4 is in a fully open or throttling state. Cooling ends when the compartment temperature is less than or equal to the shutdown temperature.

[0071] Specifically, the first speed threshold W1 can range from 1080 r / min to 4200 r / min. If the compressor 11's speed exceeds the first speed threshold W1, it indicates a high risk of condensation, requiring immediate anti-condensation measures. This involves closing the first outlet 41 of the control valve body 4 to disconnect the first refrigerant branch 31 from the main pipe 30, while simultaneously opening the second outlet 42 to connect the second refrigerant branch 32 (where the anti-condensation pipe 2 is located) to the main pipe 30, rapidly reducing the room temperature through a large flow of refrigerant. If the compressor 11's speed is less than or equal to the first speed threshold W1, it indicates a low risk of condensation. In this case, the first outlet 41 of the control valve body 4 is closed to disconnect the first refrigerant branch 31 from the main pipe 30, while the second outlet 42 is in a throttling state, reducing system energy consumption through a small flow of refrigerant.

[0072] In some embodiments, the control method further includes:

[0073] Step S23: When the door frame temperature is greater than the condensation temperature threshold,

[0074] If the speed of compressor 11 is greater than the first speed threshold W1, control the second outlet 42 to close and the first outlet 41 to be fully open;

[0075] If the speed of compressor 11 is less than or equal to the first speed threshold W1, the second outlet 42 is closed and the first outlet 41 is in a throttling state.

[0076] In this embodiment, when the door frame temperature is greater than the condensation temperature threshold, it indicates that there is no risk of condensation at the door frame. The second refrigerant branch 32, where the anti-condensation pipe 2 is located, does not need to operate and can be disconnected from the main branch 30. At this time, the valve body 4 is determined to be in a fully open or throttling state based on the speed of the compressor 11.

[0077] Specifically, if the compressor 11's speed is greater than the first speed threshold W1, the second outlet 42 of the control valve body 4 is closed to disconnect the second refrigerant branch 32 (where the anti-condensation pipe 2 is located) from the main pipe 30. Simultaneously, the first outlet 41 is fully open to connect the first refrigerant branch 31 to the main pipe 30, rapidly reducing the room temperature through a large flow of refrigerant. If the compressor 11's speed is less than or equal to the first speed threshold W1, the second outlet 42 of the control valve body 4 is closed to disconnect the second refrigerant branch 32 (where the anti-condensation pipe 2 is located) from the main pipe 30. Simultaneously, the first outlet 41 is in a throttling state, reducing system energy consumption through a small flow of refrigerant.

[0078] Figure 5 This is a schematic diagram of the structure of a refrigeration system of a refrigeration device according to another embodiment of this application.

[0079] like Figure 5 As shown, the refrigeration system of the refrigeration equipment provided in another embodiment of this application is the same as that described above. Figure 1 and Figure 2 The refrigeration system shown has a similar structure, except that the first temperature sensor 5 is not installed in the second refrigerant branch 32 of the refrigeration cycle loop 3.

[0080] In related technologies, parallel bypass pipes are generally used to achieve condensation heat management, and the operation and shutdown of the anti-condensation pipe are controlled by a valve body. However, this method increases the number of pipe welds, affecting reliability; furthermore, the system flow rate is fixed and cannot be matched to appropriate flow rates according to compressor frequency and temperature changes in the refrigeration equipment compartment, thus failing to reduce the system's refrigeration energy consumption. In this embodiment, the condensation heat management of the refrigeration system matches the appropriate flow rate according to changes in ambient temperature and humidity parameters through a valve body 4 with throttling function. This enables rapid cooling of the compartment and reduces the energy consumption of the refrigeration equipment, ensuring that the refrigeration equipment does not produce condensation and minimizing the entry of additional heat into the compartment, thereby achieving dynamic and precise condensation heat management.

[0081] Figure 6 This is a detailed flowchart of a control method for a refrigeration device according to another embodiment of this application. Figure 6As shown, in another embodiment of the control method for a refrigeration device, the environmental information includes the relative humidity. The valve body 4 has an inlet, a first outlet 41, and a second outlet 42. In step S2, controlling the operation of the valve body 4 according to the environmental information and the operating conditions of the compressor 11 includes:

[0082] Step S24: When the ambient relative humidity φ is greater than the humidity threshold φs,

[0083] If the speed of compressor 11 is greater than the second speed threshold W2, control the first outlet 41 to close and the second outlet 42 to be fully open;

[0084] If the speed of compressor 11 is less than or equal to the second speed threshold W2, control the first outlet 41 to close and the second outlet 42 to be in a throttling state.

[0085] In this embodiment, if the compartment is in cooling mode and the relative humidity φ is greater than the humidity threshold φs, it indicates that condensation is about to occur at the door frame. At this time, the valve body 4 is either fully open or throttling state determined based on the speed of the compressor 11. Cooling ends when the compartment temperature is less than or equal to the shutdown temperature.

[0086] Specifically, if the compressor 11's speed exceeds the second speed threshold W2, it indicates a high risk of condensation, requiring immediate anti-condensation measures. This involves closing the first outlet 41 of the control valve body 4 to disconnect the first refrigerant branch 31 from the main pipe 30, while simultaneously opening the second outlet 42 to connect the second refrigerant branch 32 (where the anti-condensation pipe 2 is located) to the main pipe 30, rapidly reducing the room temperature with a large flow of refrigerant. If the compressor 11's speed is less than or equal to the first speed threshold W2, it indicates a low risk of condensation. In this case, the first outlet 41 of the control valve body 4 is closed to disconnect the first refrigerant branch 31 from the main pipe 30, while the second outlet 42 is in a throttling state, reducing system energy consumption with a small flow of refrigerant.

[0087] In some embodiments, the control method further includes:

[0088] Step S25: When the ambient relative humidity φ is less than or equal to the humidity threshold φs,

[0089] If the speed of compressor 11 is greater than the second speed threshold W2, control the second outlet 42 to close and the first outlet 41 to be fully open;

[0090] If the speed of compressor 11 is less than or equal to the second speed threshold W2, the second outlet 42 is closed and the first outlet 41 is in a throttling state.

[0091] In this embodiment, the humidity threshold φs can be, for example, 50%. In cooling mode, when the ambient relative humidity φ is less than or equal to the humidity threshold φs, it indicates that there is no risk of condensation at the door frame, and the second refrigerant branch 32 containing the anti-condensation pipe 2 does not need to operate and can be disconnected from the main branch 30. At this time, the valve body 4 is determined to be either fully open or throttling based on the compressor 11's rotational speed.

[0092] Specifically, the second speed threshold W2 can range from 1080 r / min to 4200 r / min. The second speed threshold W2 can be the same as or different from the aforementioned first speed threshold W1. If the compressor 11's speed is greater than the second speed threshold W2, the second outlet 42 of the control valve body 4 is closed to disconnect the second refrigerant branch 32 (where the anti-condensation pipe 2 is located) from the main pipe 30. Simultaneously, the first outlet 41 is fully open to connect the first refrigerant branch 31 to the main pipe 30, rapidly reducing the room temperature through a large flow of refrigerant. If the compressor 11's speed is less than or equal to the second speed threshold W2, the second outlet 42 of the control valve body 4 is closed to disconnect the second refrigerant branch 32 (where the anti-condensation pipe 2 is located) from the main pipe 30. Simultaneously, the first outlet 41 is in a throttling state, reducing system energy consumption through a small flow of refrigerant.

[0093] In some embodiments, the control method for the refrigeration equipment further includes:

[0094] Before the compressor 11 is started, the valve body 4 is opened, and the first outlet 41 of the control valve body 4 is in a throttling state and the second outlet 42 is in a closed state.

[0095] After compressor 11 stops, close valve body 4.

[0096] When valve body 4 and compressor 11 start simultaneously, the system pipeline has a pressure difference and the compressor 11's discharge pressure is relatively high, which will impact valve body 4 and reduce its lifespan. Therefore, in this embodiment, valve body 4 is opened before compressor 11 starts, and at least one of the first outlet 41 and second outlet 42 of valve body 4 is in a throttling state. Valve body 4 operates in this manner for a preset time before compressor 11 is started, for example, 30 seconds. This balances system pressure and prevents damage due to excessive pressure at startup. Furthermore, the second refrigerant branch 32 containing anti-condensation pipe 2 is cut off, and only the first refrigerant branch 31 is connected in throttling mode, saving refrigerant flow. When compressor 11 is stopped, valve body 4 is closed to maintain the pressure difference between condenser 12 and evaporator 13, preventing the refrigerant in condenser 12 from vaporizing and absorbing heat from the outside due to pressure reduction, thereby reducing system energy loss and further achieving energy-saving effects.

[0097] Therefore, the refrigeration equipment in this embodiment can match the appropriate flow rate through the valve body 4 with throttling function according to the changes in parameters such as ambient temperature and humidity, door frame temperature, refrigeration equipment room temperature and compressor speed. This can not only cool the room quickly, but also reduce the energy consumption of the refrigeration equipment. This ensures that the refrigeration equipment will not produce condensation and can avoid additional heat entering the room to the greatest extent, thereby achieving dynamic and precise condensation heat management.

[0098] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A refrigeration system for a refrigeration device, characterized in that, include: Refrigeration components, including compressors, condensers, and evaporators; Anti-condensation pipe; The refrigeration cycle circuit includes a main pipeline and a first refrigerant branch and a second refrigerant branch respectively connected to the main pipeline. The compressor, the condenser and the evaporator are arranged in the main pipeline, and the anti-condensation pipe is arranged in the second refrigerant branch. The valve body includes an inlet, a first outlet, and a second outlet. The inlet is connected to the outlet of the condenser, the first outlet is connected to the first refrigerant branch, and the second outlet is connected to the second refrigerant branch. Both the first outlet and the second outlet have a fully open state, a throttling state, and a closed state.

2. The refrigeration system of the refrigeration equipment according to claim 1, characterized in that, The valve body includes a valve seat and a valve block coaxially arranged. The inlet is provided on the end face or side of the valve seat. The end face of the valve seat has a first outlet and a second outlet spaced apart circumferentially. The first outlet includes a first through hole and a first arc-shaped groove communicating with the first through hole. The second outlet includes a second through hole and a second arc-shaped groove communicating with the second through hole. The valve block includes a connecting portion with a notch. The connecting portion fits against the end face of the valve seat and can rotate relative to the valve seat so that the notch can selectively communicate with the first outlet or the second outlet. When the notch communicates with the first through hole, the first outlet is in a fully open state. When the notch communicates with the first arc-shaped groove, the first outlet is in a throttling state. When the notch communicates with the second through hole, the second outlet is in a fully open state. When the notch communicates with the second arc-shaped groove, the second outlet is in a throttling state. When the connecting portion covers the first outlet or the second outlet, the first outlet or the second outlet is in a closed state.

3. The refrigeration system of the refrigeration equipment according to claim 1, characterized in that, The refrigeration assembly further includes a first throttling element and a second throttling element. The first throttling element is disposed in the first refrigerant branch, and the second throttling element is disposed in the second refrigerant branch. The anti-condensation pipe is disposed between the valve body and the second throttling element.

4. The refrigeration system of the refrigeration equipment according to claim 3, characterized in that, The first outlet of the valve body is connected to the inlet of the first throttling element, the second outlet is connected to the inlet of the anti-condensation pipe, and the inlet of the evaporator is connected to the outlet of the first throttling element and the outlet of the second throttling element, respectively.

5. The refrigeration system of the refrigeration equipment according to claim 4, characterized in that, The flow rate at the first outlet under the throttling state is less than the flow rate of the first throttling element, and the flow rate at the second outlet under the throttling state is less than the flow rate of the second throttling element.

6. A refrigeration device, characterized in that, include: The enclosure contains compartments. The refrigeration system of the refrigeration equipment as described in any one of claims 1 to 5, wherein the evaporator of the refrigeration system is used to cool the compartment; Sensor components are used to detect environmental information of the refrigeration equipment; as well as The control unit is electrically connected to the refrigeration components, valve body, and sensor components of the refrigeration system, respectively. The control unit is configured to control the operation of the valve body according to the environmental information and the operating conditions of the compressor.

7. The refrigeration equipment according to claim 6, characterized in that, The sensor assembly includes a first temperature sensor, which is disposed in the second refrigerant branch of the refrigeration system and located between the second outlet of the valve body and the anti-condensation pipe.

8. A control method for a refrigeration device, applied to the refrigeration device as described in claim 6 or 7, characterized in that, The control method includes: Obtain environmental information and compressor operating conditions of the refrigeration equipment; The valve body operates based on the environmental information and the compressor's operating conditions.

9. The control method for the refrigeration equipment according to claim 8, characterized in that, The environmental information includes the ambient temperature, relative humidity, and door frame temperature of the refrigeration equipment. The valve body has an inlet, a first outlet, and a second outlet. Controlling the valve body's operation based on the environmental information and the compressor's operating conditions includes: Calculate the ambient condensation temperature and condensation temperature threshold based on the ambient temperature and the ambient relative humidity. In cooling mode, the door frame temperature is less than or equal to the condensation temperature threshold. If the compressor speed is greater than a first speed threshold, the first outlet is controlled to be closed and the second outlet is controlled to be fully open. If the compressor speed is less than or equal to a first speed threshold, the first outlet is controlled to be closed and the second outlet is controlled to be in a throttling state.

10. The control method for the refrigeration equipment according to claim 9, characterized in that, The control method further includes: The door frame temperature is greater than the condensation temperature threshold. If the compressor speed is greater than the first speed threshold, the second outlet is controlled to close and the first outlet is controlled to be fully open. If the compressor speed is less than or equal to a first speed threshold, the second outlet is controlled to close and the first outlet is controlled to be in a throttling state.

11. The control method for the refrigeration equipment according to claim 8, characterized in that, The environmental information includes relative humidity. The valve body has an inlet, a first outlet, and a second outlet. Controlling the valve body's operation based on the environmental information and the compressor's operating conditions includes: The relative humidity of the environment is greater than the humidity threshold. If the compressor speed is greater than the second speed threshold, the first outlet is controlled to be closed and the second outlet is controlled to be fully open. Based on the compressor speed being less than or equal to a second speed threshold, the first outlet is controlled to close and the second outlet is controlled to be in a throttling state.

12. The control method for the refrigeration equipment according to claim 11, characterized in that, The control method further includes: The relative humidity of the environment is less than or equal to the humidity threshold. If the compressor speed is greater than the second speed threshold, the second outlet is controlled to close and the first outlet is controlled to be fully open. If the compressor speed is less than or equal to a second speed threshold, the second outlet is controlled to close and the first outlet is controlled to be in a throttling state.

13. The control method for the refrigeration equipment according to claim 8, characterized in that, The control method further includes: Before the compressor starts running, the valve body is opened, and the first outlet of the valve body is controlled to be in a throttling state and the second outlet is controlled to be in a closed state. After the compressor stops, the valve body is closed.

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