Heating structure for refrigerator, refrigerating system and refrigerator

Abstract

The invention relates to the technical field of refrigerators, in particular to a heating structure and a refrigerating system for a refrigerator and the refrigerator, in the heating structure, a shelf comprises a fixing part and a heating pipeline arranged on the fixing part, the fixing part is arranged outside a machine body, and the heating pipeline is connected in a circulating system in series; the two ends of a liquid inlet pipeline are connected with a liquid inlet of the heating pipeline and a pipeline of the circulating system respectively, and a connecting node of the liquid inlet pipeline and the circulating system is located between an outlet of the compressor and an outlet of the condenser; the two ends of a liquid return pipeline are connected with a liquid outlet of the heating pipeline and a pipeline of the circulation system respectively, and a connecting node of the liquid return pipeline and the circulation system is located between an outlet of the compressor and an outlet of the condenser. The heating structure can solve the problems that heat discharged to the external environment cannot be utilized, the function of the refrigerator is single and the like, and meanwhile internal refrigeration of the refrigerator is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of refrigerators, and in particular to a heating structure, a refrigeration system and a refrigerator for a refrigerator. Background Art

[0002] A refrigerator is a common household appliance, and its refrigeration principle is based on the "refrigeration cycle" process. The refrigeration cycle uses the phase change of the refrigerant in the system to absorb the heat inside the refrigerator and discharge it to the external environment, thereby maintaining the low temperature inside the refrigerator and achieving the refrigeration or freezing effect on food and items. However, in the prior art, the heat discharged to the external environment during the refrigeration cycle is usually not fully utilized, and a large amount of heat energy is wasted.

[0003] In some related technologies, there is a design that directly delivers the high-temperature gas output by the compressor to the evaporator that needs to be defrosted through a system branch. This method utilizes the heat generated by the refrigeration system and no longer relies on traditional electric heaters to complete the defrosting operation, which can reduce the defrosting energy consumption to a certain extent. However, in this utilization method, the high-temperature gas output by the compressor does not participate in the "refrigeration cycle" and directly acts on the evaporator for defrosting, which will affect the overall refrigeration effect of the system and cause a decrease in refrigeration efficiency.

[0004] In addition, the food or items stored in the refrigerator usually need to be thawed or heated when in use, but the existing refrigerator does not provide the function of effectively utilizing the heat of the refrigeration system for thawing or heating. Users often need to rely on microwave ovens or other external devices to operate, which not only increases additional energy consumption but also reduces the convenience of use. Summary of the invention

[0005] The present application provides a heating structure, a refrigeration system and a refrigerator for a refrigerator to solve the above-mentioned technical problems.

[0006] In a first aspect, the present application provides a heating structure for a refrigerator, the refrigerator comprising a body and a circulation system, the circulation system comprising a compressor, a condenser, a throttling device and an evaporator arranged in series. The heating structure comprises:

[0007] The shelf comprises a fixing part and a heating pipeline arranged on the fixing part, wherein the fixing part is arranged outside the machine body, and the heating pipeline is connected in series in the circulation system;

[0008] A liquid inlet pipeline, both ends of which are connected to the liquid inlet of the heating pipeline and the pipeline of the circulation system respectively, and a connection node between the liquid inlet pipeline and the circulation system is between the outlet of the compressor and the outlet of the condenser;

[0009] A liquid return pipeline, both ends of which are respectively connected to the liquid outlet of the heating pipeline and the pipeline of the circulation system, and a connection node between the liquid return pipeline and the circulation system is between the outlet of the compressor and the outlet of the condenser.

[0010] Furthermore, a connection node between the liquid inlet pipeline and the circulation system, and a connection node between the liquid return pipeline and the circulation system are both between the outlet of the compressor and the inlet of the condenser.

[0011] Furthermore, a connection node between the liquid inlet pipeline and the circulation system, and a connection node between the liquid return pipeline and the circulation system are both located on the pipeline of the condenser.

[0012] Furthermore, the heating structure for the refrigerator also includes:

[0013] A first three-way valve disposed on the liquid inlet pipeline, comprising a first inlet, a first outlet, and a second outlet, wherein the first inlet is connected to the circulation system through the liquid inlet pipeline, and the first outlet is connected to the liquid inlet of the heating pipeline through the liquid inlet pipeline;

[0014] A second three-way valve disposed on the liquid return pipeline comprises a second inlet, a third inlet and a third outlet, wherein the second inlet is connected to the liquid outlet of the heating pipeline through the liquid return pipeline, and the third outlet is connected to the circulation system through the liquid return pipeline;

[0015] The branch has two ends connected to the second outlet and the third inlet respectively.

[0016] Furthermore, a hollow portion is formed in the middle of the fixed portion, the heating pipeline is a corrugated tube, one end of the heating pipeline after being folded in half and arranged side by side is a fixed end connected to the fixed portion, and the other end is a free end, the liquid inlet and the liquid outlet are located at the fixed end, and the heating pipeline forms a spiral shape with a gradually decreasing diameter located in the hollow portion from the fixed end to the free end.

[0017] Furthermore, the heating pipeline is connected to the liquid inlet pipeline through a first rotary joint, and the heating pipeline is connected to the liquid return pipeline through a second rotary joint.

[0018] In a second aspect, the present application further provides a refrigeration system, which includes a circulation system and the heating structure provided in the first aspect of the present application.

[0019] In a third aspect, the present application also provides a refrigerator, which includes a body, a circulation system and the heating structure provided in the first aspect of the present application.

[0020] Furthermore, one end of the fixing portion is rotatably connected to the side wall of the body, and the fixing portion has a working state and a storage state during the rotation process. In the working state, the fixing portion is arranged at an angle to the side wall of the body, and in the storage state, the fixing portion is arranged in close contact with the body.

[0021] Furthermore, a storage groove is provided on the side wall of the body, and when the fixing portion is in the storage state, the fixing portion is embedded in the storage groove.

[0022] Furthermore, the refrigerator further comprises a support rod, and when the fixing portion is in a working state, the support rod is diagonally supported between the fixing portion and the body.

[0023] Furthermore, one end of the support rod is rotatably connected to the side wall of the body, and a slot for receiving the support rod is provided on the side wall of the body.

[0024] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art: the heat released by the refrigerant through the heating pipeline is directly used to heat the food or items on the shelf, and the effective recovery and direct utilization of heat are achieved through the heating structure, which greatly improves the heat utilization rate and avoids energy waste. The heating pipeline is designed to be connected in series in the circulation system, and can share the heat dissipation and cooling task of the high-temperature and high-pressure refrigerant with the condenser, which is equivalent to the heating pipeline sharing a part of the heat dissipation task of the condenser, so that the load of the condenser is reduced, and the workload of the condenser is effectively reduced, so that the condenser can complete the condensation process of the refrigerant faster and more stably, reduce the fatigue and loss of the condenser, thereby extending the service life of the equipment and reducing the maintenance cost of the user. In addition, after releasing heat through the heating pipeline, the refrigerant returns to the condenser through the liquid return pipeline for condensation, and the circulation process of the refrigerant will not be interrupted or affected by the recycling of heat. The efficiency and stability of the entire refrigeration system are guaranteed, so that the heat utilization of the heating pipeline will not affect the temperature control of the refrigeration or freezing compartment, which not only maintains the refrigeration effect, but also increases the defrosting and heating functions, and expands the application scenarios of the refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0027] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0028] Figure 1 It is a structural schematic diagram of a circulation system of a refrigerator in the related art;

[0029] Figure 2 A schematic diagram of the structure of a refrigeration system of a refrigerator provided in one embodiment of the present application;

[0030] Figure 3 A schematic diagram of the structure of a refrigeration system of a refrigerator provided in another embodiment of the present application;

[0031] Figure 4 A schematic diagram of the connection relationship between a heating structure and a circulation system in a refrigerator refrigeration system provided in an embodiment of the present application;

[0032] Figure 5 for Figure 4 A partial enlarged view of the part selected by the dashed line;

[0033] Figure 6 A schematic diagram of the connection relationship between the heating pipeline and other pipelines in the heating structure provided in an embodiment of the present application;

[0034] Figure 7 A schematic cross-sectional view of the structure of a first rotary joint provided in an embodiment of the present application;

[0035] Figure 8 A schematic cross-sectional view of the structure of a second rotary joint provided in an embodiment of the present application;

[0036] Fig. 9 A schematic diagram of the front structure of a shelf provided in an embodiment of the present application;

[0037] Fig.10 A schematic diagram of the back structure of a shelf provided in an embodiment of the present application;

[0038] Fig.11 A schematic diagram of the structure of a refrigerator shelf in a storage state provided in an embodiment of the present application;

[0039] Fig.12 A schematic diagram of the structure of a refrigerator shelf in a working state provided by an embodiment of the present application;

[0040] Fig.13 A schematic diagram showing the structure of a storage slot in a refrigerator provided in an embodiment of the present application;

[0041] Fig.14A schematic diagram of the structure of the shelf provided in the embodiment of the present application in a working state;

[0042] Fig.15 A schematic diagram of the structure of the diagonal brace support rod provided in an embodiment of the present application;

[0043] Fig.16 A schematic diagram of the structure of the coordination of the diagonal support rod and the transverse support rod provided in an embodiment of the present application.

[0044] In the figure:

[0045] 100, circulation system; 110, compressor; 120, condenser; 121, first condenser; 122, second condenser; 130, throttling device; 140, evaporator;

[0046] 200, body; 210, storage slot; 220, first card slot; 230, second card slot;

[0047] 310, shelf; 311, fixing part; 312, heating pipeline; 313, hollow part; 314, rotating shaft; 315, supporting groove;

[0048] 320, liquid inlet pipeline;

[0049] 330, liquid return line;

[0050] 340, first three-way valve; 341, first inlet; 342, first outlet; 343, second outlet;

[0051] 350, second three-way valve; 351, second inlet; 352, third inlet; 353, third outlet;

[0052] 360, branch road;

[0053] 370, temperature sensor;

[0054] 380, first rotary joint; 381, sleeve; 382, ​​sealing ring;

[0055] 390, second rotary joint; 391, sleeve; 392, sealing ring;

[0056] 400, diagonal brace support rod;

[0057] 500, horizontal support rod;

[0058] 600, bearing part;

[0059] 700. Items to be heated. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0061] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0062] In the related art, the basic structure of a refrigerator includes at least a box body, a storage compartment and a circulation system 100, wherein the storage compartment may be at least one of a freezer compartment, a refrigeration compartment, a soft freezer compartment and a maturation compartment. Here, the storage compartment includes a freezer compartment and a refrigeration compartment as an example for explanation. The refrigeration compartment has a refrigeration space, and a drawer or a shelf or other structure may be provided in the refrigeration space. The refrigerator includes a refrigeration door for opening or closing the refrigeration space; the refrigeration compartment has a freezing space, and a drawer or a shelf or other structure may be provided in the freezing space. The refrigerator has a freezing door for opening or closing the freezing space. The refrigeration compartment and the freezing compartment are separated by an insulation layer.

[0063] like Figure 1As shown, the circulation system 100 includes a compressor 110, a condenser 120, a throttling device 130 and an evaporator 140. During operation, a low-temperature and low-pressure gas-phase refrigerant is sucked into the air inlet of the compressor 110, compressed into a high-temperature and high-pressure gas-phase refrigerant in the cylinder of the compressor 110, and then enters the condenser 120 through the exhaust port. The high-temperature and high-pressure gas-phase refrigerant dissipates heat through the condenser 120, and the temperature continues to drop. It is cooled into a saturated gas-phase refrigerant at normal temperature and high pressure and further cooled into a saturated liquid-phase refrigerant. The refrigerant flowing out of the condenser 120 enters the throttling device 130 for throttling and pressure reduction to become a gas-liquid two-phase refrigerant at normal temperature and low pressure, and then enters the evaporator 140 to absorb heat and vaporize, which not only reduces the temperature of the first evaporator 140 and its surroundings, but also makes the refrigerant become a low-temperature and low-pressure gas. Then, the refrigerant flowing out of the evaporator 140 enters the compressor 110 along the pipeline to complete the refrigeration cycle. The evaporator 140 is usually located in the evaporator 140 cavity. The evaporator 140 is connected to the compressor 110 through a refrigerant circulation pipeline. The temperature of the evaporator 140 is reduced under the action of the compressor 110 and the refrigerant in the circulation pipeline. As a cold source for temperature regulation of the freezing compartment and the refrigerating compartment, the air cooling system transports the cold energy of the evaporator 140 to each storage compartment.

[0064] In the above refrigeration cycle, the heat dissipated by the condenser 120 to the external environment is usually not fully utilized, and a large amount of heat energy is wasted. In addition, the food or items stored in the refrigerator usually need to be thawed or heated when used, but the existing refrigerator does not provide a function of effectively utilizing the heat of the refrigeration system for thawing or heating. Users often need to rely on natural thawing, microwave ovens or other external devices for operation, which not only increases additional energy or time consumption, but also reduces the convenience of use.

[0065] In summary, the existing refrigerator refrigeration system still has room for improvement in terms of the utilization efficiency of discharged heat and the energy consumption of food thawing or heating. Therefore, how to reasonably utilize the heat generated by the refrigerator refrigeration system, improve the heat utilization rate, and meet the user's needs for food thawing or heating has become a technical problem that needs to be solved urgently.

[0066] Based on this, Figure 2-16As shown, the embodiment of the present application provides a heating structure for a refrigerator, the structure of the refrigerator mainly includes a body 200, a circulation system 100 and a heating structure. The circulation system 100 includes a compressor 110, a condenser 120, a throttling device 130 and an evaporator 140 arranged in series. The heating structure mainly includes a shelf 310, a liquid inlet pipeline 320 and a liquid return pipeline 330, wherein the shelf 310 includes a fixing portion 311 and a heating pipeline 312 arranged on the fixing portion 311, the fixing portion 311 is arranged outside the body 200, and the heating pipeline 312 is connected in series in the circulation system 100; the two ends of the liquid inlet pipeline 320 are respectively connected to the liquid inlet of the heating pipeline 312 and the pipeline of the circulation system 100, and the connection node of the liquid inlet pipeline 320 and the circulation system 100 is between the outlet of the compressor 110 and the outlet of the condenser 120; the two ends of the liquid return pipeline 330 are respectively connected to the liquid outlet of the heating pipeline 312 and the pipeline of the circulation system 100, and the connection node of the liquid return pipeline 330 and the circulation system 100 is between the outlet of the compressor 110 and the outlet of the condenser 120.

[0067] The body 200 is the main structure of the refrigerator and is used to accommodate storage compartments. For example, a refrigeration compartment and a freezer compartment can be set in the body 200. The circulation system is used to achieve the refrigeration function. It is composed of a compressor 110, a condenser 120, a throttling device 130 and an evaporator 140. The refrigerant circulates in it to complete the transfer and discharge of heat. The heating structure is linked to the circulation system 100 to achieve the heating function through heat exchange.

[0068] Specifically, the shelf 310 in the heating structure is composed of a fixing portion 311 and a heating pipeline 312, wherein the fixing portion 311 is used to fix the shelf 310 at a specific position outside the body 200, as a bearing and supporting structure of the heating pipeline 312, and the heating pipeline 312 is arranged on the fixing portion 311 as a core component for heating food or articles. The shelf 310 can be designed as a drawer type or a flat plate type as needed to facilitate user operation.

[0069] The working principle of the heating structure is that the compressor 110 compresses the low-temperature and low-pressure gaseous refrigerant into a high-temperature refrigerant, and introduces it into the heating pipeline 312 through the liquid inlet pipeline 320. The high-temperature refrigerant flows in the heating pipeline 312 and performs heat exchange with the items placed on the shelf 310. After the refrigerant releases part of the heat in the heating pipeline 312, it flows through the liquid return pipeline 330 and returns to the circulation system 100, and flows to the condenser 120 to continue heat dissipation and conversion. The connection node between the heat inlet pipeline and the circulation system 100 is set between the outlet of the compressor 110 and the inlet of the condenser 120, so that the heating pipeline 312 of the heating structure can use the high-temperature and high-pressure refrigerant output by the compressor 110 to provide a heat source for the heating structure. The connection node of the liquid return pipeline 330 is also located between the outlet of the compressor 110 and the outlet of the condenser 120, which can ensure that the high-temperature refrigerant can still return to the circulation system 100 after passing through the heating pipeline 312 to continue to participate in the refrigeration cycle.

[0070] Compared with the technical solution in which the condenser 120 completely discharges heat into the environment in the traditional design, the heat released by the refrigerant through the heating pipe 312 is directly used to heat the food or items on the shelf 310. The effective recovery and direct utilization of heat are achieved through the heating structure, which greatly improves the heat utilization rate and avoids energy waste. The heating pipe 312 is designed to be connected in series in the circulation system 100, and can share the heat dissipation and cooling task of the high-temperature and high-pressure refrigerant with the condenser 120, which is equivalent to the heating pipe 312 sharing a part of the heat dissipation task of the condenser 120, so that the load of the condenser 120 is reduced, and the workload of the condenser 120 is effectively reduced, so that the condenser 120 can complete the condensation process of the refrigerant faster and more stably, reduce the fatigue and loss of the condenser 120, thereby extending the service life of the equipment and reducing the maintenance cost of the user. In addition, after releasing heat through the heating pipe 312, the refrigerant returns to the condenser 120 through the return liquid pipe 330 for condensation. The circulation process of the refrigerant will not be interrupted or affected by the heat recovery, and the efficiency and stability of the entire refrigeration system are guaranteed. The heat utilization of the heating pipe 312 will not affect the temperature control of the refrigeration or freezing compartment, which not only maintains the refrigeration effect, but also adds defrosting and heating functions, expanding the application scenarios of the refrigerator.

[0071] In specific daily life scenarios, users can directly use the refrigerator heating structure to defrost frozen food or heat refrigerated items without external equipment, which greatly facilitates daily use. Compared with natural thawing or external equipment operation, the heating structure uses the heat of the circulation system 100 for heating, which is faster and more stable, saving user time. By integrating the heating function into the refrigerator, the cumbersome operation of additional equipment is avoided, and the overall functionality and user experience of the refrigerator are improved.

[0072] In some embodiments, Figure 2As shown, the connection node between the liquid inlet pipeline 320 and the circulation system 100, and the connection node between the liquid return pipeline 330 and the circulation system 100 are both between the outlet of the compressor 110 and the inlet of the condenser 120. At this time, during the working process, the circulation path of the refrigerant is compressor 110→liquid inlet pipeline 320→heating pipeline 312→liquid return pipeline 330→condenser 120→throttling device 130→evaporator 140→compressor 110. In this embodiment, the compressor 110 compresses the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant; after the refrigerant comes out from the outlet of the compressor 110, it directly enters the heating pipeline 312 through the liquid inlet pipeline 320; the heating pipeline 312 uses the high-temperature and high-pressure refrigerant discharged from the compressor 110 to provide a high-temperature heat source for food thawing or other heating needs; the refrigerant in the heating pipeline 312 flows out and enters the condenser 120 through the return liquid pipeline 330, and then returns to the compressor 110 after passing through the throttling device 130 and the evaporator 140 in sequence, completing the refrigeration cycle.

[0073] The refrigerant in this embodiment flows directly from the outlet of the compressor 110 into the heating structure without being cooled by the condenser 120, thereby maintaining a relatively high temperature and heat. The high-temperature heat source can quickly and efficiently thaw or heat food, thereby improving the practicality of the heating function and being suitable for situations requiring fast and efficient heating.

[0074] In some embodiments, Figure 3 As shown, the connection node between the liquid inlet pipeline 320 and the circulation system 100, and the connection node between the liquid return pipeline 330 and the circulation system 100 are both located on the pipeline of the condenser 120. That is, the heating pipeline 312 is connected in series inside the condenser 120, and the internal pipeline of the condenser 120 is divided into two parts, namely the first condenser 121 and the second condenser 122, and the liquid return pipeline 330 is connected in series between the first condenser 121 and the second condenser 122. At this time, during the working process, the circulation path of the refrigerant is the compressor 110→the first condenser 121→the liquid inlet pipeline 320→the heating pipeline 312→the liquid return pipeline 330→the second condenser 122→the throttling device 130→the evaporator 140→the compressor 110. In this embodiment, the compressor 110 compresses the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant; the refrigerant flows out of the outlet of the compressor 110 and enters the first condenser 121 to complete a certain degree of cooling; the refrigerant flowing out of the first condenser 121 enters the heating pipeline 312 through the inlet pipeline; the heating pipeline 312 uses the medium-temperature and high-pressure refrigerant discharged from the first condenser 121 to provide a medium-temperature heat source for food thawing or other heating needs; the refrigerant in the heating pipeline 312 flows out and enters the second condenser 122 through the return liquid pipeline 330, and then returns to the compressor 110 after passing through the throttling device 130 and the evaporator 140 in sequence, completing the refrigeration cycle.

[0075] The refrigerant in this embodiment has released part of its heat in the first condenser 121, and its temperature has been reduced, providing gentler and more uniform heat, and can avoid pipeline or structural pressure problems caused by the sudden entry of high-temperature and high-pressure refrigerant into the heating pipeline 312. The first condenser 121 shares part of the heat dissipation task, and at the same time reserves the required heat source for the heating pipeline 312. The second condenser 122 further condenses the refrigerant that completes the heating function without affecting the subsequent refrigeration efficiency. Through multi-stage processing, the heat distribution is more reasonable, which is suitable for thawing or heating scenarios with lower temperature requirements, and avoids excessive heating to damage food quality.

[0076] In some embodiments, Figure 4 and 5 As shown, the heating structure for a refrigerator further includes a first three-way valve 340 , a second three-way valve 350 and a branch 360 . Wherein: the first three-way valve 340 is arranged on the liquid inlet pipeline 320, the first three-way valve 340 includes a first inlet 341, a first outlet 342 and a second outlet 343, the first inlet 341 is connected to the circulation system 100 through the liquid inlet pipeline 320, and the first outlet 342 is connected to the liquid inlet of the heating pipeline 312 through the liquid inlet pipeline 320; the second three-way valve 350 is arranged on the liquid return pipeline 330, the second three-way valve 350 includes a second inlet 351, a third inlet 352 and a third outlet 353, the second inlet 351 is connected to the liquid outlet of the heating pipeline 312 through the liquid return pipeline 330, the third outlet 353 is connected to the circulation system 100 through the liquid return pipeline 330, and the third inlet 352 is connected to the second outlet 343 through the branch pipe; the two ends of the branch 360 are connected to the second outlet 343 and the third inlet 352 respectively. The following is a heating structure for a refrigerator based on the detailed description, and analyzes its functions and beneficial effects.

[0077] In this embodiment, the heating structure for the refrigerator includes not only a fixing portion 311, a heating pipeline 312, a liquid inlet pipeline 320, and a liquid return pipeline 330, but also a first three-way valve 340, a second three-way valve 350, and a branch 360. By adjusting the opening and closing states of the first three-way valve 340 and the second three-way valve 350, the following two operating modes can be selected: a heating mode and a bypass mode.

[0078] In the heating mode, the first inlet 341 of the first three-way valve 340 is connected to the first outlet 342, and the second outlet 343 is blocked; the second inlet 351 of the second three-way valve 350 is connected to the third outlet 353, and the third inlet 352 is blocked; taking the heating pipeline 312 connected in series between the first condenser 121 and the second condenser 122 as an example, the flow path of the refrigerant is: first condenser 121 → liquid inlet pipeline 320 → heating pipeline 312 → liquid return pipeline 330 → second condenser 122. At this time, the heating pipeline 312 is in working state, and the heat of the refrigerant in the circulation system 100 is used for heating.

[0079] In the bypass mode, the first inlet 341 of the first three-way valve 340 is connected to the second outlet 343, and the first outlet 342 is blocked; the third inlet 352 of the second three-way valve 350 is connected to the third outlet 353, and the second inlet 351 is blocked; taking the heating pipeline 312 connected in series between the first condenser 121 and the second condenser 122 as an example, the flow path of the refrigerant is: first condenser 121→liquid inlet pipeline 320→branch 360→liquid return pipeline 330→second condenser 122. At this time, the heating pipeline 312 is bypassed, and the refrigerant directly flows through the branch 360 to return to the circulation system 100, and the heating structure is in a non-working state of stopping heating.

[0080] By setting the first three-way valve 340, the second three-way valve 350 and the branch 360, the heating pipeline 312 can flexibly switch the working state according to the demand, start the heating function when necessary, and quickly realize the thawing or heating of food; when heating is not needed, it switches to the bypass mode to avoid unnecessary heat consumption. By reducing the workload of the heating pipeline 312 through the bypass mode, it helps to extend the service life of the heating pipeline 312 and its related components and reduce maintenance costs.

[0081] Preferably, in order to realize automatic control, a temperature sensor 370 can be provided in the heating area of ​​the heating structure to detect the temperature t of the heated items in the heating area, and the operation mode can be adjusted to the heating mode or the bypass mode according to the detected temperature. For example, when the temperature rises by more than 1°C after two consecutive temperature collections, the operation mode can be switched to the bypass mode to prevent the items placed on the partition from heating up too quickly or affecting the normal refrigeration of the refrigerator. When the temperature sensor 370 detects that the heating speed has slowed down, it can continue to switch to the heating mode.

[0082] In some embodiments, Figure 9-11As shown, a hollow portion 313 is formed in the middle of the fixed portion 311, and the dotted circle in the figure indicates the boundary of the hollow portion 313. The heating pipeline 312 is a corrugated tube, preferably a stainless steel corrugated tube. One end of the heating pipeline 312 after being folded and arranged side by side is a fixed end connected to the fixed portion 311, and the other end is a free end. The liquid inlet and the liquid outlet are located at the fixed end. The heating pipeline 312 forms a spiral shape with a gradually decreasing diameter located in the hollow portion 313 from the fixed end to the free end.

[0083] The middle part of the fixed part 311 is provided with a hollow part 313, which can reduce the weight of the shelf 310 itself on the one hand, and can assist in placing items to be heated through the hollow part 313 on the other hand, so as to reasonably utilize the structural space. The fixed end of the heating pipeline 312 is used to firmly connect the heating pipeline 312 to the fixed part 311, and a liquid inlet and a liquid outlet are provided at the same time, so as to facilitate the connection of the heating pipeline 312 with the liquid inlet pipeline 320 and the liquid return pipeline 330 through the fixed end. The heating pipeline 312 adopts a corrugated tube to improve the flexibility and elasticity of the pipeline, and avoid rupture while deforming. It is preferred to use a stainless steel corrugated tube, which not only has high heat resistance and corrosion resistance, can withstand the action of high temperature and high pressure refrigerant for a long time, but also has excellent thermal conductivity.

[0084] When the heating pipe 312 is not bearing any weight, Figure 9-11 As shown, the heating pipe 312 is designed to be roughly maintained in the same plane under the structural strength of the corrugated tube itself, forming a relatively planar spiral shape to reduce the height occupancy of the heating pipe 312 and maintain the simplicity of the structure.

[0085] When the heating pipe 312 is under load, Fig.14 As shown, for example, when an object 700 to be heated is placed thereon, the relatively planar spiral structure is compressed and deformed under the weight of the object, transforming from a planar spiral to a three-dimensional spiral, forming a cone-like spiral structure, which provides support for the object while increasing the contact area, thereby achieving a more uniform and sufficient heating effect.

[0086] In the initial state without bearing weight, the spiral heating pipeline 312 is located in the hollow portion 313, and all its coils are roughly distributed in the same plane, and the diameter gradually decreases from the fixed end to the free end. This design reduces the thickness of the structure and reduces the space occupied by the heating structure, making it easier to store. When the object to be heated is placed on the heating pipeline 312, the spiral structure gradually bends downward under the weight of the object to form a conical three-dimensional spiral structure. The diameter of the three-dimensional spiral gradually decreases from top to bottom, and the object can be placed in it firmly to avoid sliding or tilting.

[0087] The elastic deformation of the spiral heating pipe 312 disperses the weight of the object and avoids damage to the pipe due to excessive local force. The contact between the object and the spiral heating pipe 312 is changed from a single-sided line contact to a line contact in a three-dimensional space, which improves the heating efficiency and evenly transfers heat. The conical shape wraps the object firmly to prevent it from slipping or falling, and is particularly suitable for irregularly shaped objects. This spiral design cleverly combines the advantages of plane and three-dimensional structures, achieving a balance between space utilization and functionality, which not only improves the heating efficiency, but also enhances the protection of the object and the user experience.

[0088] This design is also particularly suitable for the heating needs of a variety of foods or items. Small foods or items can be placed at the bottom, medium-sized items can be placed in the middle, and large-sized items can be placed at the top, which can fully adapt to the shape characteristics of the conical spiral structure.

[0089] In some embodiments, Figure 4-8 As shown, the heating pipeline 312 is connected to the liquid inlet pipeline 320 through a first rotary joint 380 , and the heating pipeline 312 is connected to the liquid return pipeline 330 through a second rotary joint 390 .

[0090] The first rotary joint 380 is used to connect the heating pipeline 312 with the liquid inlet pipeline 320. The rotation design realizes flexible pipeline docking, ensuring that when the spiral structure heating pipeline 312 is compressed and deformed, the connection between the liquid inlet pipeline 320 and the heating pipeline 312 is not restricted by a fixed angle, and the sealing and fluidity of the pipeline connection are maintained. The second rotary joint 390 is used to connect the heating pipeline 312 with the liquid return pipeline 330. Similar to the first rotary joint 380, the rotary structure allows the heating pipeline 312 to maintain the sealing and fluidity of the pipeline connection during the deformation process. In the working state, when the heating pipeline 312 is compressed and deformed into a three-dimensional conical spiral, the rotary joint allows the connection part of the heating pipeline 312 to freely adjust the angle to avoid stress or damage to the connection caused by pipeline deformation. The rotary joint adopts a sealing design, and no matter how the joint position rotates during use of the heating pipeline 312, the pipeline sealing of the refrigerant can be maintained to prevent leakage. The flexible design of the swivel joint reduces the risk of damage caused by pipe stress under fixed connection mode, and improves the overall reliability and service life of the heating structure.

[0091] As an optional implementation, Figure 7 and 8As shown, the first rotary joint 380 and the second rotary joint 390 both include a sleeve and a sealing ring. The sleeve is preferably made of stainless steel or copper alloy material that is resistant to high temperature and high pressure and has good corrosion resistance and sealing properties. The sealing ring inside is used to enhance the sealing effect. The internal channel of the sleeve adopts a low-friction design to reduce the resistance loss during the flow of the refrigerant and the friction resistance during rotation. Figure 7 As shown, taking the first rotary joint 380 as an example, one end of the liquid inlet of the heating pipeline 312 and one end of the liquid inlet pipeline 320 are respectively inserted into the two ends of the sleeve 381, and a sealing ring 382 is provided between the heating pipeline 312 and the sleeve 381, and between the liquid inlet pipeline 320 and the sleeve 381. Figure 8 As shown, taking the second rotary joint 390 as an example, one end of the liquid outlet of the heating pipeline 312 and one end of the liquid return pipeline 330 are respectively inserted into the two ends of the sleeve 391, and a sealing ring 392 is provided between the heating pipeline 312 and the sleeve 391, and between the liquid return pipeline 330 and the sleeve 391.

[0092] The present application also provides a refrigeration system. Figure 2-5 As shown, the refrigeration system includes a circulation system 100 and a heating structure provided in the above-mentioned embodiment of the present application. Figure 11-13 As shown, the embodiment of the present application also correspondingly protects a refrigerator, which includes a body 200, a circulation system 100 and a heating structure provided by the aforementioned embodiment of the present application.

[0093] The circulation system 100 includes a compressor 110, a condenser 120, a throttling device 130 and an evaporator 140, and the refrigerant circulates between the above components to achieve a refrigeration function. The heating structure includes a fixed portion 311, a heating pipeline 312, a liquid inlet pipeline 320, and a liquid return pipeline 330. The heating pipeline 312 is connected in series in the circulation system 100 through the liquid inlet pipeline 320 and the liquid return pipeline 330, and adopts a deformable spiral structure design. After the refrigerant is compressed by the compressor 110, a high-temperature and high-pressure gaseous refrigerant is formed, which is converted into a normal-temperature and high-pressure liquid refrigerant after heat dissipation by the condenser 120, and then depressurized by the throttling device 130, and finally enters the evaporator 140 to absorb heat to complete the refrigeration cycle. According to different embodiments, the refrigerant can enter the heating pipeline 312 directly through the heating pipeline 312 (without the condenser 120) or after partial condensation. The heating pipeline 312 absorbs the heat of the refrigerant to provide a heat source for the items to be heated outside the refrigerator. After completing the heating function, the refrigerant re-enters the circulation system 100 through the liquid return line 330 to continue the condensation, throttling and evaporation processes.

[0094] The refrigerator and its refrigeration system may further include a control system for controlling the output power of the compressor 110, the operating status of each component in the circulation system 100, and the opening and closing of the liquid inlet pipeline 320 and the liquid return pipeline 330 in the heating structure, so as to realize the intelligent selection and optimized operation of the refrigeration and heating functions. By integrating the heating structure provided by the present application into the refrigeration system, not only the functionality of the refrigeration equipment is expanded, but also the energy utilization efficiency of the system is significantly improved, which is an optimization and upgrade of the traditional refrigeration technology.

[0095] In some embodiments, one end of the fixing portion 311 is rotatably connected to the side wall of the body 200, and the fixing portion 311 has a working state and a storage state during the rotation process. Fig.12 As shown, in the working state, the fixing portion 311 is arranged at an angle with the side wall of the body 200, as shown in FIG. Fig.11 As shown, in the storage state, the fixing portion 311 is arranged in close contact with the body 200. One end of the fixing portion 311 can be rotatably connected to the side wall of the body 200 through a rotating shaft 314, and the rotating shaft 314 is preferably designed to be a high-strength material to ensure stability and durability during multiple rotations and use.

[0096] In the working state, the fixing part 311 is at a certain angle (such as 30° to 90°) with the side wall of the body 200. At this time, the fixing part 311 is in an unfolded state relative to the side wall of the body 200 for use by the user. The spiral structure heating pipeline 312 is suspended in the hollow part 313, which can support the items that need to be heated while maintaining a good heating effect. The user can directly place food or other items on the unfolded heating pipeline 312 for heating or thawing operations. In the storage state, the fixing part 311 fits the side wall of the body 200, has a compact structure, and does not occupy the effective storage space in the refrigerator. The spiral structure heating pipeline 312 is also retracted to the side wall with the fixing part 311 to avoid collision or damage. During use, the user can rotate the fixing part 311 from the storage state to the working state by manual or mechanical drive (such as a motor or spring mechanism). After use, the reverse operation can be performed to retract the fixing part 311 to the side wall to restore the normal appearance of the refrigerator.

[0097] The rotatable design of the fixing part 311 allows the shelf 310 to be flexibly opened or folded as needed to adapt to different usage scenarios. In the storage state, the heating structure hardly occupies the external space of the refrigerator, optimizing the space utilization, and avoiding the exposed heating pipe 312 from contacting other items when stored to prevent accidental collision or damage. When the user needs the heating function, it can be quickly unfolded without additional operation or removal of items, and can be easily retracted after use.

[0098] In some embodiments, Fig.11 and 13As shown, a storage groove 210 is provided on the side wall of the body 200, and when the fixing part 311 is in the storage state, the fixing part 311 is embedded in the storage groove 210. The storage groove 210 is provided on the outer side wall of the body 200, and the position matches the rotation path of the fixing part 311. The depth, width and length of the storage groove 210 are customized according to the size of the fixing part 311 to ensure that the fixing part 311 can be fully embedded in the storage state. When the fixing part 311 is in the storage state, the fixing part 311 and the heating pipeline 312 are integrally embedded in the storage groove 210, flush with the side wall, and form a flat surface. The edge of the storage groove 210 can be provided with a guiding slope or a flexible material to facilitate the smooth embedding and removal of the fixing part 311, while avoiding scratching or collision of the objects. The notch can be equipped with a buckle or a magnetic adsorption device to lock the stability of the fixing part 311 in the storage state.

[0099] After the fixing part 311 is embedded in the storage slot 210, it is flush with the side wall of the body 200, which can minimize the space occupied by the outside of the refrigerator. The design of the storage slot 210 allows the shelf 310 of the heating structure to be hidden when not in use, maintaining the simplicity and visual unity of the external structure of the refrigerator. After being embedded in the storage slot 210, the heating pipeline 312 is isolated and protected to avoid collision and damage, thereby improving the durability of the product and user safety.

[0100] In some embodiments, Fig.12 As shown, the refrigerator further includes a diagonal brace support rod 400, which is diagonally supported between the fixed portion 311 and the body 200 when the fixed portion 311 is in working state. The diagonal brace support rod 400 is made of high-strength material, such as stainless steel, aluminum alloy or reinforced plastic, and has sufficient load-bearing capacity and durability. One end of the diagonal brace support rod 400 is connected to the body 200 through a movable hinge, and the other end is detachably connected to the fixed portion 311 through a buckle, abutment or hinge. For example, a support groove 315 is provided on the fixed portion 311, and the end of the diagonal brace support rod 400 is inserted into the support groove 315 to support the fixed portion 311. The diagonal brace support rod 400, the fixed portion 311 and the body 200 form a triangular support structure with adjustable angles.

[0101] When the fixing portion 311 is in working state, the diagonal support rod 400 is diagonally supported between the fixing portion 311 and the machine body 200 at a certain angle to provide additional support force for the fixing portion 311. The diagonal support rod 400 can be designed as follows: Fig.15The telescopic structure shown can adapt to the support requirements of the fixed part 311 at different angles or positions. Through thread adjustment or convex locking, the user can adjust the length of the diagonal support rod 400 of the telescopic structure according to actual use requirements. After the fixed part 311 is unfolded, the diagonal support rod 400 provides reliable diagonal support force to prevent the fixed part 311 from sinking or shaking during use. When it is necessary to carry heavier heating items, the diagonal support rod 400 effectively disperses the pressure and protects the fixed part 311 and the body 200 from damage due to excessive load. In the non-working state, the diagonal support rod 400 can be folded along the side wall of the body 200 or the fixed part 311, and embedded in the storage groove 210 together with the heating structure, without taking up additional space.

[0102] The introduction of the diagonal brace support rod 400 enables the fixed part 311 to carry heavier heated items, expanding the application range of the refrigerator heating function. The diagonal brace structure forms a stable triangular mechanical structure, and can disperse the load borne by the fixed part 311, reduce the structural stress concentration caused by long-term use, greatly improve the anti-deformation ability of the fixed part 311 in the working state, and protect the equipment components from damage.

[0103] In some embodiments, one end of the diagonal support rod 400 is rotatably connected to the side wall of the body 200, such as Fig.13 As shown, a first slot 220 for receiving the diagonal support rod 400 is provided on the side wall of the body 200. One end of the diagonal support rod 400 is rotatably connected to the side wall of the body 200 through a rotating shaft or a hinge, and the other end is a free end for supporting the fixing portion 311. The first slot 220 is a concave structure, which is provided on the side wall of the body 200, preferably provided on the bottom of the receiving groove 210. The first slot 220 matches the size and shape of the diagonal support rod 400. When the diagonal support rod 400 is a retractable structure, the first slot 220 matches the size and shape of the retracted diagonal support rod 400.

[0104] A buckle or magnetic device may be provided in the first slot 220 to provide a fixing force when the diagonal support rod 400 is stored, so as to prevent the diagonal support rod 400 from loosening due to shaking. The edge of the first slot 220 is preferably rounded to prevent scratches during user operation. Preferably, the diagonal support rod 400 is rotatably connected to the lower end of the storage slot 210, and the fixing portion 311 is rotatably connected to the upper end of the storage slot 210.

[0105] In some embodiments, Fig.16 As shown, two diagonal support rods 400 are arranged side by side, and a horizontal support rod 500 is connected in the middle of the two diagonal support rods 400. A bearing portion 600 is arranged in the middle of the horizontal support rod 500, and the bearing portion 600 is used to limit and support the free end of the heating pipeline 312. Fig.13As shown, a second slot 230 for accommodating a horizontal support rod 500 and a bearing portion 600 is provided on the side wall of the machine body 200. The improved double diagonal support rod 400 structure is designed to further enhance the bearing capacity and stability of the fixing portion 311. The two diagonal support rods 400 are arranged side by side and are rotatably connected to the side wall of the machine body 200 through a rotating shaft. A certain distance is maintained between the diagonal support rods 400 to improve the structural stability and disperse the load. The horizontal support rod 500 is connected to the middle of the two diagonal support rods 400 to form an integral frame structure. The horizontal support rod 500 provides additional lateral support to avoid shaking or deformation of the two diagonal support rods 400 when bearing load alone. The bearing portion 600 is a plane or groove structure arranged on the horizontal support rod 500, which is used to limit and support the free end of the heating pipeline 312 to ensure that the heating pipeline 312 is placed stably and does not slide.

[0106] A second slot 230 having a shape and size matching that of the horizontal support rod 500 and the bearing portion 600 is provided on the side wall of the body 200, and is used to store the horizontal support rod 500 and the bearing portion 600. The user rotates the two diagonal support rods 400 to the working state, and the horizontal support rod 500 forms a lateral support, and the overall frame structure is stable. The bearing portion 600 is used to lift and limit the free end of the heating pipeline 312 to ensure the stability of the heating pipeline 312 during use, and to prevent the heating pipeline 312 from being deformed too much due to the heavy weight of the carried items. After use, the horizontal support rod 500 and the bearing portion 600 are rotated back to the second slot 230 together.

[0107] The two diagonal support rods 400 are arranged in parallel, and the transverse support rod 500 is perpendicular to the two diagonal support rods 400. The transverse support rod 500 and the two diagonal support rods 400 form an I-shaped structure, and the transverse support rod 500 is rotatably connected to the two diagonal support rods 400. In this way, the synchronous rotation of the transverse support rod 500 and the two diagonal support rods 400 can be flexibly realized, and when close to the second slot 230, the transverse support rod 500 can rotate around its own axis to adaptively adjust the matching posture with the second slot 230.

[0108] The double diagonal support rods 400 and the horizontal support rods 500 form an integral frame, providing multi-point support to avoid shaking or deformation caused by single-point support. The horizontal support rods 500 and the bearing parts 600 effectively limit the free end of the heating pipe 312, provide support and limit, and prevent the heating pipe 312 from excessively sagging or being damaged due to excessive weight of items placed after the free end is suspended in the air.

[0109] It should be understood that the terms used in the text are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used in the text may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described in the text are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0110] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A heating structure for a refrigerator, the refrigerator comprising a body and a circulation system, the circulation system comprising a compressor, a condenser, a throttling device and an evaporator arranged in series, characterized in that: The heating structure comprises: The shelf comprises a fixing part and a heating pipeline arranged on the fixing part, wherein the fixing part is arranged outside the machine body, and the heating pipeline is connected in series in the circulation system; A liquid inlet pipeline, wherein both ends of the liquid inlet pipeline are respectively connected to the liquid inlet of the heating pipeline and the pipeline of the circulation system, and the connection node between the liquid inlet pipeline and the circulation system is between the outlet of the compressor and the outlet of the condenser; A liquid return pipeline, both ends of which are respectively connected to the liquid outlet of the heating pipeline and the pipeline of the circulation system, and a connection node between the liquid return pipeline and the circulation system is between the outlet of the compressor and the outlet of the condenser.

2. The heating structure for a refrigerator according to claim 1, characterized in that: The connection node between the liquid inlet pipeline and the circulation system and the connection node between the liquid return pipeline and the circulation system are both between the outlet of the compressor and the inlet of the condenser.

3. The heating structure for a refrigerator according to claim 2, characterized in that: The connection node between the liquid inlet pipeline and the circulation system, and the connection node between the liquid return pipeline and the circulation system are both located on the pipeline of the condenser.

4. The heating structure for a refrigerator according to any one of claims 1 to 3, characterized in that: Also includes: A first three-way valve disposed on the liquid inlet pipeline, comprising a first inlet, a first outlet, and a second outlet, wherein the first inlet is connected to the circulation system through the liquid inlet pipeline, and the first outlet is connected to the liquid inlet of the heating pipeline through the liquid inlet pipeline; A second three-way valve disposed on the liquid return pipeline comprises a second inlet, a third inlet and a third outlet, wherein the second inlet is connected to the liquid outlet of the heating pipeline through the liquid return pipeline, and the third outlet is connected to the circulation system through the liquid return pipeline; The branch has two ends connected to the second outlet and the third inlet respectively.

5. The heating structure for a refrigerator according to claim 1, characterized in that: A hollow portion is formed in the middle of the fixed portion, the heating pipeline is a corrugated tube, one end of the heating pipeline after being folded in half and arranged side by side is a fixed end connected to the fixed portion, and the other end is a free end, the liquid inlet and the liquid outlet are located at the fixed end, and the heating pipeline forms a spiral shape with a gradually decreasing diameter located in the hollow portion from the fixed end to the free end.

6. The heating structure for a refrigerator according to claim 5, characterized in that: The heating pipeline is connected to the liquid inlet pipeline through a first rotating joint, and the heating pipeline is connected to the liquid return pipeline through a second rotating joint.

7. A refrigeration system for a refrigerator, characterized in that: The invention comprises a circulation system and a heating structure as claimed in any one of claims 1 to 6.

8. A refrigerator, characterized in that: Features The invention comprises a machine body, a circulation system and a heating structure as claimed in any one of claims 1 to 6.

9. The refrigerator according to claim 8, characterized in that: One end of the fixing portion is rotatably connected to the side wall of the body, and the fixing portion has a working state and a storage state during rotation. In the working state, the fixing portion is arranged at an angle to the side wall of the body, and in the storage state, the fixing portion is arranged in close contact with the body.

10. The refrigerator according to claim 9, characterized in that: A receiving groove is provided on the side wall of the machine body, and when the fixing part is in the receiving state, the fixing part is embedded in the receiving groove.

11. The refrigerator according to claim 9 or 10, characterized in that: The refrigerator further comprises a diagonal support rod, and when the fixing portion is in a working state, the diagonal support rod is diagonally supported between the fixing portion and the body.

12. The refrigerator according to claim 11, characterized in that: One end of the diagonal brace support rod is rotatably connected to the side wall of the machine body, and a first clamping groove for accommodating the diagonal brace support rod is provided on the side wall of the machine body.

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