Capillary tube group for refrigerating system and refrigerator

Abstract

The utility model relates to the technical field of household appliances, and discloses a capillary tube group for a refrigerating system, which comprises capillary tubes and a combined control valve. The plurality of capillary tubes are arranged in parallel, and the plurality of capillary tubes have different tube diameters; and the combined control valve is communicated with the same ends of the plurality of capillary tubes and is used for controlling one or more of the plurality of capillary tubes to be conducted. According to the control method and device, more gears are achieved for controlling and adjusting the flow of the refrigerant, and the adjusting precision is improved. The utility model further discloses the refrigerator.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, for example, to a capillary tube assembly and a refrigerator for a refrigeration system. Background Art

[0002] Currently, capillary tubes in refrigerators are used for throttling and reducing pressure. They are responsible for reducing the pressure of the high-pressure liquid refrigerant exiting the condenser, converting it to a low-pressure state. Existing refrigerators only have one capillary tube, making it impossible to adjust to varying refrigerator loads. Instead, the only way to balance cooling performance is to adjust the compressor's output power.

[0003] In the related technology, there is a multi-stage throttling refrigeration system for household refrigerators, which is equipped with three capillaries. Overpressure valves are set at the input ends of two of the capillaries. The overpressure valves are turned on when the pressure exceeds the threshold, thereby realizing the circulation of refrigerants with different flow rates to adapt to different loads of the refrigerator.

[0004] During the implementation of the embodiments of the present disclosure, it was found that at least the following problems exist in the related art:

[0005] The adjustment accuracy of the refrigerant flow is low, which makes it difficult to adapt to the complex operating conditions of the refrigerator.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to ordinary technicians in this field. Utility Model Content

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The embodiments of the present disclosure provide a capillary tube group and a refrigerator for a refrigeration system, so as to improve the adjustment accuracy of the refrigerant flow and better adapt to the complex operating conditions of the refrigerator.

[0009] In some embodiments, a capillary tube assembly for a refrigeration system includes: a capillary tube; and a combination control valve. The capillary tubes are provided in plurality and arranged in parallel, and the capillary tubes have different diameters. The combination control valve is connected to the same end of the capillary tubes and is used to control the flow of one or more of the capillary tubes.

[0010] Optionally, the other end of the multiple capillary tubes connected to one end of the combined control valve is connected to the one-way guide valve.

[0011] Optionally, a plurality of one-way valves are provided, and each capillary tube is correspondingly provided with a one-way valve.

[0012] Optionally, the plurality of capillaries have the same length.

[0013] Optionally, the combined control valve includes a valve body and a baffle. The valve body is provided with a plurality of openings for communicating with the capillary tubes; the baffle is provided corresponding to the openings and is used to open or close the openings.

[0014] Optionally, a plurality of baffles are provided, and each baffle is correspondingly arranged to a through opening.

[0015] Optionally, each baffle is connected to a driving member, and the driving member drives the baffle to move to open or close the corresponding opening.

[0016] Optionally, there are three capillaries, namely a first capillary, a second capillary and a third capillary; wherein the flow area of the third capillary is greater than the sum of the flow area of the first capillary and the flow area of the second capillary; or, the flow area of the third capillary is smaller than the sum of the flow area of the first capillary and the flow area of the second capillary.

[0017] Optionally, the first capillary tube, the second capillary tube and the third capillary tube can be turned on independently or in combination to form a plurality of flow areas of different gears, and the difference in flow areas between two adjacent gears in the plurality of gears is evenly set.

[0018] In some embodiments, a refrigerator includes: the capillary tube group for a refrigeration system according to the above embodiment.

[0019] The capillary tube assembly and refrigerator for a refrigeration system provided by the embodiments of the present disclosure can achieve the following technical effects:

[0020] Since the combination control valve is connected to the same end of multiple capillaries, and the multiple capillaries have different diameters, that is, the multiple capillaries have different flow areas, the combination control valve can control the conduction of any one of the multiple capillaries, and capillaries of different diameters correspond to multiple different refrigerant flow rates; the combination control valve can also control the conduction of any two of the multiple capillaries, and the sum of the refrigerant flow rates of the two capillaries forms a new refrigerant flow rate. Multiple capillaries of different diameters can be combined in pairs to form multiple different refrigerant flow rates. Similarly, multiple capillaries can also be combined in more than two to achieve more gears for controlling and adjusting the refrigerant flow rate, improving the accuracy of the adjustment, and adapting to more operating conditions of the refrigerator.

[0021] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] One or more embodiments are exemplarily described by corresponding drawings. These exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation. In addition,

[0023] Figure 1 1 is a schematic structural diagram of a capillary tube group for a refrigeration system provided by an embodiment of the present disclosure;

[0024] Figure 2 is a schematic structural diagram of another capillary tube group for a refrigeration system provided by an embodiment of the present disclosure;

[0025] Figure 3 is a schematic structural diagram of another capillary tube group for a refrigeration system provided by an embodiment of the present disclosure;

[0026] Figure 4 is a schematic diagram of the internal structure of a valve body provided by an embodiment of the present disclosure;

[0027] Figure 5 This is a schematic structural diagram of a baffle covering a through opening provided by an embodiment of the present disclosure;

[0028] Figure 6 is a schematic diagram of the internal structure of another valve body provided by an embodiment of the present disclosure;

[0029] Figure 7 is a structural schematic diagram of a refrigerator provided by an embodiment of the present disclosure;

[0030] Figure 8 It is a structural schematic diagram of another refrigerator provided by an embodiment of the present disclosure.

[0031] Reference numerals:

[0032] 100. Combined control valve; 110. Valve body; 111. Port; 120. Baffle; 130. Drive member; 131. Drive motor; 132. Connecting rod; 150. Control block; 160. Electric push rod; 200. Capillary tube; 300. One-way valve; 400. Condenser; 500. Evaporator; 600. Compressor. DETAILED DESCRIPTION

[0033] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0034] In the description and claims of the embodiments of the present disclosure, as well as in the accompanying drawings, the terms "first," "second," and the like are used to distinguish similar items and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate to describe the embodiments of the present disclosure herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0035] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to having a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0036] Furthermore, the terms "disposed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or an internal connection between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the embodiments of this disclosure based on the specific circumstances.

[0037] Unless otherwise stated, the term "plurality" means two or more.

[0038] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0039] Combine Figure 1 As shown, the present embodiment provides a capillary tube assembly for a refrigeration system, comprising: a capillary tube 200 and a combination control valve 100. Multiple capillary tubes 200 are provided and arranged in parallel, and the capillary tubes 200 have different diameters. The combination control valve 100 is connected to the same end of the capillary tubes 200 and is used to control the conduction of one or more of the capillary tubes 200.

[0040] A capillary tube group for a refrigeration system provided by an embodiment of the present disclosure is used. Since the combination control valve 100 is connected to the same end of multiple capillary tubes 200, and the multiple capillary tubes 200 have different diameters, that is, the multiple capillary tubes 200 have different flow areas. The combination control valve 100 can control the conduction of any one of the multiple capillary tubes 200, and the capillaries 200 of different diameters correspond to multiple different refrigerant flow rates; the combination control valve 100 can also control the conduction of any two of the multiple capillary tubes 200, and the sum of the refrigerant flow rates of the two capillary tubes 200 forms a new refrigerant flow rate, and multiple capillaries 200 of different diameters are combined in pairs to form multiple different refrigerant flow rates. Similarly, multiple capillary tubes 200 can also be combined in more than two to achieve more gears for controlling and adjusting the flow rate of the refrigerant, improve the accuracy of the adjustment, and adapt to more operating conditions of the refrigerator.

[0041] Optionally, the capillary tube 200 is made of copper. This copper capillary tube 200 exhibits high strength and good toughness. Even with a small diameter, it maintains good mechanical strength, minimizing the risk of breakage or deformation. Furthermore, the capillary tube 200 is easier to bend and form, making it suitable for complex pipeline layouts.

[0042] Combine Figure 2 As shown, optionally, multiple capillary tubes 200 are connected to one end of the combination control valve 100 and the other end thereof is connected to the one-way valve 300. Thus, one end of the capillary tubes 200 is connected to the combination control valve 100, and the other end of the capillary tubes 200 is connected to the one-way valve 300. The refrigerant in the capillary tubes 200 flows to the one-way valve 300 and then flows out of the one-way valve 300. The one-way valve 300 also prevents the refrigerant from flowing back into the capillary tubes 200.

[0043] Combine Figure 3 As shown, optionally, multiple one-way valves 300 are provided, with one one-way valve 300 corresponding to each capillary tube 200. In this way, each capillary tube 200 is connected to a one-way valve 300. After the refrigerant in a capillary tube 200 flows through the corresponding one-way valve 300, the one-way valve 300 prevents the refrigerant from flowing back into the original capillary tube 200. The other one-way valves 300 prevent the refrigerant from flowing back into other capillary tubes 200.

[0044] Optionally, the capillary tubes 200 are of the same length. In this way, the refrigerant flows over the same distance in the capillary tubes 200, avoiding the influence of the length factor on the flow pressure in the capillary tubes 200, making the gear adjustment of the capillary tubes 200 more controllable and improving the adjustment accuracy.

[0045] Combine Figure 4As shown, in one embodiment, a combination control valve 100 includes a valve body 110 and a baffle 120. The valve body 110 is provided with multiple openings 111 for communicating with capillary tubes 200. The baffles 120 are arranged corresponding to the openings 111 and are used to open or close the openings 111. In this way, the refrigerant first flows into the valve body 110, then flows through the open openings 111 into the corresponding capillary tubes 200, thereby controlling the flow of refrigerant through capillary tubes 200 of different diameters. This allows for a wider range of control and adjustment positions for the refrigerant flow, improves the accuracy of the adjustment, and adapts to a wider range of operating conditions for the refrigerator.

[0046] Specifically, the valve body 110 defines a liquid inlet cavity, the baffle 120 is arranged in the liquid inlet cavity, the through port 111 is arranged on an inner wall of the liquid inlet cavity and is connected to the liquid inlet cavity. The liquid inlet cavity is used to connect to the refrigeration system so that the refrigerant in the refrigeration system flows into the liquid inlet cavity and is then distributed to the capillary tube through the liquid inlet cavity.

[0047] Optionally, the flow area of the valve body 110 is greater than or equal to the sum of the flow areas of the multiple capillary tubes 200, and less than or equal to twice the sum of the flow areas of the multiple capillary tubes 200. In this way, when the flow area of the valve body 110 is less than the sum of the flow areas of the multiple capillary tubes 200, the flow area of the valve body 110 is relatively small, and it is difficult to meet the situation where refrigerant circulates through the multiple capillary tubes 200. When the flow area of the valve body 110 is greater than twice the sum of the flow areas of the multiple capillary tubes 200, the volume of the valve body 110 is relatively large, and it occupies more space inside the refrigerator. It can be seen from this that the range of the flow area of the valve body 110 being greater than or equal to the sum of the flow areas of the multiple capillary tubes 200, and less than or equal to twice the sum of the flow areas of the multiple capillary tubes 200, is more reasonable, which can meet the situation where refrigerant circulates through the multiple capillary tubes 200 and also occupies less space inside the refrigerator.

[0048] Optionally, the flow area of the valve body 110 is equal to 1.5 times the sum of the flow areas of the multiple capillary tubes 200. In this way, the multiple capillary tubes 200 can all circulate refrigerant while occupying less space inside the refrigerator.

[0049] It can be understood that when the flow area of the valve body 110 is larger than the sum of the flow areas of the multiple capillaries 200 , part of the refrigerant can be temporarily stored in the valve body 110 to provide a buffer for the flow of the refrigerant.

[0050] Optionally, a plurality of baffles 120 are provided, and each baffle 120 is provided corresponding to a through opening 111. In this way, one baffle 120 controls one through opening 111, and the plurality of baffles 120 do not affect each other, thereby improving the independence of controlling the through openings 111.

[0051] Combine Figure 5As shown, each baffle 120 is optionally connected to a driver 130, which drives the baffle 120 to open or close the corresponding opening 111. In this way, the driver 130 provides power for the movement of the baffle 120, and the movement of the baffle 120 opens or closes the corresponding opening 111, thereby controlling the flow of refrigerant through capillary tubes 200 of different diameters, thereby achieving more gears for controlling and adjusting the refrigerant flow, improving the adjustment accuracy, and adapting to more operating conditions of the refrigerator.

[0052] Optionally, the driving member 130 includes: a driving motor 131 and a connecting rod 132. There are multiple driving motors 131, and each driving motor 131 is connected to the valve body 110; there are multiple connecting rods 132, and one end of each connecting rod 132 is vertically connected to the output shaft of the output end of a driving motor 131, and the other end of each connecting rod 132 is fixedly connected to a side wall of a corresponding baffle 120. In this way, the connecting rod 132 is driven to rotate by the driving motor 131, and the connecting rod 132 drives the baffle 120 to move. The baffle 120 then opens or closes the corresponding port 111, thereby controlling the flow of refrigerant through the capillary tubes 200 of different diameters, so as to achieve more gears for controlling and adjusting the flow of refrigerant, improve the accuracy of regulation, and adapt to more operating conditions of the refrigerator.

[0053] Specifically, a side wall of the baffle 120 facing away from the through-port 111 is fixedly connected to the connecting rod 132. In this way, the connecting rod 132 is prevented from being disposed between the baffle 120 and the through-port 111, thereby preventing the connecting rod 132 from interfering with the baffle 120 closing the corresponding through-port 111.

[0054] Specifically, the plurality of driving motors 131 are disposed in the liquid inlet cavity of the valve body 110 , and the output shaft of the output end of each driving motor 131 is connected to a corresponding baffle 120 .

[0055] Combine Figure 6 As shown, in another embodiment, the combined control valve 100 includes: a valve body 110 and a control block 150. The valve body 110 is provided with a plurality of openings 111 for connecting to the capillary tubes 200; the control block 150 is movably disposed in the valve body 110 along the axial direction of the openings 111, and is used to open or close the openings 111. In this way, the refrigerant first flows into the valve body 110, then flows into the corresponding capillary tubes 200 through the opened openings 111, thereby controlling the flow of refrigerant through capillary tubes 200 of different diameters, thereby achieving more gears for controlling and adjusting the refrigerant flow, improving the accuracy of the adjustment, and adapting to more operating conditions of the refrigerator.

[0056] Specifically, a liquid inlet cavity is defined inside the valve body 110 , and the control block 150 is disposed in the liquid inlet cavity.

[0057] Optionally, a plurality of control blocks 150 are provided, and each control block 150 is provided corresponding to a port 111. In this way, one control block 150 controls one port 111, and the plurality of control blocks 150 do not affect each other, thereby improving the independence of controlling the ports 111.

[0058] Optionally, the combination control valve 100 further includes: a plurality of electric push rods 160. Each of the plurality of electric push rods 160 is disposed on the valve body 110, and the output shaft of each electric push rod 160 passes through the valve body 110 and is connected to a corresponding control block 150. Thus, each electric push rod 160 provides power for the upward movement of a corresponding control block 150 along the axis of the opening 111. The control block 150 then opens or closes the corresponding opening 111, thereby controlling the flow of refrigerant through capillary tubes 200 of varying diameters. This allows for a wider range of gears for controlling and adjusting the refrigerant flow, improves adjustment accuracy, and adapts to a wider range of operating conditions for the refrigerator.

[0059] Specifically, a plurality of electric push rods 160 are disposed on the outside of the valve body 110 , and an output shaft at an output end of each electric push rod 160 extends into the liquid inlet cavity and is connected to a corresponding control block 150 .

[0060] In one embodiment, three capillaries 200 are provided, namely a first capillary tube, a second capillary tube, and a third capillary tube; wherein the flow area of the third capillary tube is greater than the sum of the flow areas of the first capillary tube and the second capillary tube. In this way, the combination control valve 100 can control the conduction of any one of the first, second, and third capillary tubes 200, and the three capillaries 200 with different diameters correspond to multiple different refrigerant flow rates. The combination control valve 100 can also control the conduction of any two of the first, second, and third capillary tubes 200, and the sum of the refrigerant flow rates of the two capillaries 200 forms a new refrigerant flow rate. The three capillaries 200 with different diameters can be combined in pairs to form multiple different refrigerant flow rates. The first, second, and third capillary tubes can also be conducted simultaneously to achieve more gears for controlling and adjusting the refrigerant flow rate, improve the accuracy of the adjustment, and adapt to more operating conditions of the refrigerator. For example, the flow area of the third capillary tube is equal to twice the sum of the flow areas of the first and second capillary tubes. This provides more refrigerant flow levels, better adapting to a wider range of refrigerator operating conditions and improving regulation accuracy.

[0061] If the flow area of the third capillary tube is equal to the sum of the flow areas of the first and second capillary tubes, the flow area of the first and second capillary tubes simultaneously conducting is the same as the flow area of the third capillary tube conducting. This results in duplicate flow areas, reducing the refrigerant flow rate by one level. Therefore, the flow area of the third capillary tube is larger than the sum of the flow areas of the first and second capillary tubes, allowing for more refrigerant flow levels, better adapting to a wider range of refrigerator operating conditions, and improving regulation accuracy.

[0062] Exemplarily, the first capillary tube is connected alone to achieve a first-level refrigerant flow rate; the second capillary tube is connected alone to achieve a second-level refrigerant flow rate; and the third capillary tube is connected alone to achieve a third-level refrigerant flow rate.

[0063] Exemplarily, the first capillary tube and the second capillary tube are simultaneously connected to achieve the fourth gear of refrigerant flow; the first capillary tube and the third capillary tube are simultaneously connected to achieve the fifth gear of refrigerant flow; the second capillary tube and the third capillary tube are simultaneously connected to achieve the sixth gear of refrigerant flow.

[0064] Exemplarily, the first capillary tube, the second capillary tube and the third capillary tube are simultaneously connected to achieve the refrigerant flow rate of the seventh gear.

[0065] Optionally, the first capillary tube, the second capillary tube, and the third capillary tube can be independently or combined to form a plurality of different gears of flow areas, and the difference in flow areas between two adjacent gears in the plurality of gears is set uniformly. In this way, by independently or combinedly connecting the first capillary tube, the second capillary tube, and the third capillary tube, the refrigerant flow rate can be adjusted in multiple gears, which can better adapt to more operating conditions of the refrigerator, improve the accuracy of the adjustment, and maintain a uniform difference in the refrigerant flow rate between adjacent gears, thereby further achieving more uniform control of the cooling effect during the gear adjustment process.

[0066] The difference between two adjacent gears from the first to the seventh gear is set uniformly. This keeps the difference in refrigerant flow between adjacent gears uniform, thereby making the control of the cooling effect more uniform during the gear adjustment process, improving the convenience of control, and making the control of the cooling capacity more precise.

[0067] Optionally, the flow area of the second capillary tube is twice that of the first capillary tube, and the flow area of the third capillary tube is twice that of the second capillary tube. In this way, when the three capillaries are turned on individually or in groups, the flow area can be multiplied based on the flow area of the first capillary tube, thereby improving the uniformity of gear adjustment.

[0068] For example, the flow area of the first capillary is 1mm2 , the filtration area of the second capillary is 2mm 2 , the flow area of the third capillary is 4mm 2 Thus, the flow area of the first gear is 1mm 2 The flow area of the second gear is 2mm 2 The fourth gear is that the first capillary and the second capillary are connected at the same time, that is, 3mm 2 The flow area of the third gear is 4mm 2 The fifth gear is when the first capillary and the third capillary are turned on at the same time, which is 5mm 2 The sixth gear is when the second capillary and the third capillary are turned on at the same time, which is 6mm 2 The seventh gear is that the first capillary, the second capillary and the third capillary are connected at the same time, that is, 7mm 2 While improving the adjustment accuracy, the adjustment between gears can be smoother and better adapted to the different operating conditions of the refrigerator.

[0069] In another embodiment, three capillaries 200 are provided, namely a first capillary tube, a second capillary tube, and a third capillary tube; wherein the flow area of the third capillary tube is smaller than the sum of the flow areas of the first capillary tube and the second capillary tube. In this way, the combination control valve 100 can control the conduction of any one of the first, second, and third capillary tubes 200, and the three capillaries 200 with different diameters correspond to multiple different refrigerant flow rates. The combination control valve 100 can also control the conduction of any two of the first, second, and third capillary tubes 200, and the sum of the refrigerant flow rates of the two capillaries 200 forms a new refrigerant flow rate. The three capillaries 200 with different diameters are combined in pairs to form multiple different refrigerant flow rates. The first, second, and third capillary tubes can also be conducted simultaneously to achieve more gears for controlling and adjusting the refrigerant flow rate, improve the accuracy of the adjustment, and adapt to more operating conditions of the refrigerator. For example, the flow area of the third capillary tube is equal to 0.8 times the sum of the flow areas of the first and second capillary tubes. This provides more refrigerant flow levels, better adapting to a wider range of refrigerator operating conditions and improving regulation accuracy.

[0070] The flow area of the third capillary is smaller than the sum of the flow area of the first capillary and the flow area of the second capillary. The same applies to the difference between two adjacent gears from the first gear to the seventh gear. For example, the flow area of the first capillary is 2mm 2 , the filtration area of the second capillary is 3mm 2 , the flow area of the third capillary is 4mm 2 Thus, the flow area of the first gear is 2mm 2The flow area of the second gear is 3mm 2 The flow area of the third gear is 4mm 2 The fourth gear is that the first capillary and the second capillary are connected at the same time, that is, 5mm 2 The fifth gear is when the first and third capillaries are turned on at the same time, which is 6mm. 2 The sixth gear is when the second capillary and the third capillary are both turned on, which is 7mm. 2 The seventh gear is that the first capillary, the second capillary and the third capillary are turned on at the same time, that is, 8mm 2 While improving the adjustment accuracy, the adjustment between gears can be smoother and better adapted to the different operating conditions of the refrigerator.

[0071] In the case where there are three capillaries, it means that there are three corresponding openings 111 , and there are three blocking pieces 120 or control blocks 150 corresponding to the openings 111 .

[0072] In some embodiments, a refrigerator includes: the capillary tube group for a refrigeration system according to the above embodiment.

[0073] The refrigerator provided by the embodiment of the present disclosure includes the capillary tube group for the refrigeration system of the above embodiment, and the combination control valve 100 is connected to the same end of the multiple capillary tubes 200, and the multiple capillary tubes 200 have different diameters, that is, the multiple capillary tubes 200 have different flow areas. The combination control valve 100 can control the conduction of any one of the multiple capillary tubes 200, and the capillaries 200 of different diameters correspond to multiple different refrigerant flow rates; the combination control valve 100 can also control the conduction of any two capillary tubes 200 among the multiple capillary tubes 200, and the sum of the refrigerant flow rates of the two capillary tubes 200 forms a new refrigerant flow rate, and the capillaries 200 of different diameters are combined in pairs to form multiple different refrigerant flow rates. Similarly, the multiple capillary tubes 200 can also be combined in more than two to achieve more gears for controlling and adjusting the flow rate of the refrigerant, improve the accuracy of the adjustment, and adapt to more operating conditions of the refrigerator.

[0074] Combine Figure 7 As shown, the end of the combined control valve 100 facing away from the capillary tube 200 is optionally connected to the condenser 400. In this way, the refrigerant flowing through the condenser 400 undergoes heat exchange, and the condenser 400 dissipates the heat of the refrigerant into the air. Furthermore, the refrigerant is converted from high-temperature, high-pressure gas to liquid, which then flows into the capillary tube 200.

[0075] Specifically, the liquid inlet cavity of the valve body 110 is communicated with the condenser 400 .

[0076] Optionally, the end of the one-way valve 300 facing away from the capillary tube 200 is connected to the evaporator 500. In this way, the refrigerant flows from the one-way valve 300 to the evaporator 500, and the refrigerant is converted from liquid to gas during heat exchange in the evaporator 500.

[0077] Combine Figure 8 As shown, optionally, one end of the evaporator 500 facing away from the one-way valve 300 is connected to one end of the compressor 600, and the other end of the compressor 600 is connected to the condenser 400. In this way, the gaseous refrigerant flows from the evaporator 500 into the compressor 600, and the gaseous refrigerant is compressed by the compressor 600 to become a high-temperature and high-pressure gaseous refrigerant, and then flows to the condenser 400.

[0078] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless expressly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A capillary tube assembly for a refrigeration system, characterized in that: include: There are multiple capillaries (200) arranged in parallel with each other, and the multiple capillaries (200) have different diameters; A combined control valve (100) is connected to the same end of the plurality of capillaries (200) and is used to control the conduction of one or more of the plurality of capillaries (200); There are three capillaries (200), namely a first capillary, a second capillary and a third capillary; wherein the flow area of the third capillary is greater than the sum of the flow area of the first capillary and the flow area of the second capillary; or, the flow area of the third capillary is smaller than the sum of the flow area of the first capillary and the flow area of the second capillary.

2. The capillary tube assembly for a refrigeration system according to claim 1, characterized in that: The capillaries (200) are connected to the combination control valve (100) at one end and the other end thereof is connected to the one-way guide valve (300).

3. The capillary tube assembly for a refrigeration system according to claim 2, characterized in that: A plurality of one-way conducting valves (300) are provided, and each capillary tube (200) is provided with a corresponding one-way conducting valve (300).

4. The capillary tube assembly for a refrigeration system according to claim 1, characterized in that: The multiple capillaries (200) have the same length.

5. The capillary tube assembly for a refrigeration system according to claim 1, characterized in that: The combined control valve (100) comprises: The valve body (110) is provided with a plurality of openings (111) for communicating with the capillary tube (200); The blocking piece (120) is arranged corresponding to the opening (111) and is used to open or close the opening (111).

6. The capillary tube assembly for a refrigeration system according to claim 5, characterized in that: A plurality of baffles (120) are provided, and each baffle (120) is arranged corresponding to a through opening (111).

7. The capillary tube assembly for a refrigeration system according to claim 6, characterized in that: Each baffle (120) is connected to a driving member (130), and the driving member (130) drives the baffle (120) to move so as to open or close the corresponding opening (111).

8. The capillary tube assembly for a refrigeration system according to claim 1, characterized in that: The first capillary tube, the second capillary tube and the third capillary tube can be turned on independently or in combination to form a plurality of flow areas of different gears, and the difference in the flow areas of two adjacent gears in the plurality of gears is evenly set.

9. A refrigerator, characterized in that: The capillary tube assembly for a refrigeration system comprises the capillary tube assembly according to any one of claims 1 to 8.

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