Anti-condensation refrigerating unit and kitchen refrigerator

Abstract

The utility model provides an anti-condensation refrigerating unit and a kitchen refrigerator. The anti-condensation refrigerating unit and the kitchen refrigerator are used for solving the condensation problem caused by the fact that the heat conductivity coefficient of a metal plate inner container of the kitchen refrigerator is large. Cold air at the top of an existing kitchen refrigerator enters a refrigerator body from a refrigerating unit, and heat conduction of an assembly gap between the refrigerating unit and the refrigerator body and a metal plate at the top of the refrigerator body is serious. And cold energy is conducted to the outer surface of the bottom plate of the box body through the whole bottom plate to form condensation. When the metal bottom plate is processed by laser cutting at present, a circle of part of the metal bottom plate, which is in contact with the thermal insulation foam, is cut into an annular isolation strip to form a metal bottom plate partition part to block the conduction of cold energy, so that the condensation on the surface is greatly reduced, the risk of electrical safety and the increase of energy consumption are reduced, and the process production is convenient; and additional heating parts are not added, so that the cost is greatly reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of refrigerator, more particularly to a condensation-preventing refrigeration unit and a kitchen refrigerator. BACKGROUND

[0002] As a refrigeration tool, the inside of the refrigerator is always kept at a very low temperature, especially the freezer room, which is generally below -18℃ to ensure that food can be stored for a long time without deterioration. However, under certain environmental conditions, such as rainy and humid seasons, high environmental humidity or high summer ambient temperature, the temperature difference between the inside and outside of the refrigerator will become particularly significant. When the humidity of the external environment reaches a certain level and the surface temperature of the refrigerator drops below the dew point, condensation may occur. This not only affects the user's visual experience, but also may have an adverse effect on the appearance and use of the refrigerator.

[0003] The inner liner of the kitchen refrigerator is usually made of sheet metal material rather than a plastic inner liner, which makes it easier for cold to be transferred to the sheet metal surface of the box through the thinner surface. Because the thermal conductivity coefficient of the sheet metal part is large, the cold not only can be transferred to the sheet metal part in direct contact with the refrigerant, but also can affect the sheet metal surface exposed to the air through heat conduction. Therefore, in the case of a large temperature difference, the sheet metal surface of the kitchen refrigerator is more likely to form more condensation water.

[0004] To solve the problem of condensation in the refrigerator, two methods are mainly used in the prior art. One is to use a condensation-preventing pipe to heat the refrigerator shell through the circulating medium in the pipe to increase the surface temperature and thus avoid the occurrence of condensation. The other method is to apply heating wires to the local part of the refrigerator shell to increase the local temperature by electric heating, which also achieves the purpose of preventing condensation. Both methods can effectively alleviate the condensation problem to some extent, but they also increase the production cost and maintenance cost of the refrigerator. CONTENT OF THE UTILITY MODEL

[0005] To solve the problem of more condensation water on the sheet metal surface of the kitchen refrigerator and the increased production cost and maintenance cost of the refrigerator in the prior art.

[0006] The present application provides a condensation-preventing refrigeration unit, comprising: a heat preservation foam; the heat preservation foam comprises a top heat preservation foam, a side heat preservation foam and a bottom heat preservation foam;

[0007] One side heat preservation foam is connected to each end of the top heat preservation foam, and the bottom heat preservation foam is arranged between the two side heat preservation foams, and the spacing between the top heat preservation foam, the side heat preservation foam and the bottom heat preservation foam forms a cold air circulation line;

[0008] The metal bottom plate is provided with an isolation band on the side in contact with the side heat preservation foam, and the isolation band is a groove.

[0009] In an available implementation, an evaporator and a fan are arranged between the bottom heat preservation foam and the top heat preservation foam.

[0010] The cold air circulation circuit is provided with an air outlet and an air return, the air outlet is arranged on the side close to the evaporator, and the air return is arranged on the side close to the fan.

[0011] In an available implementation, the isolation band is annular, and the side heat preservation foam is attached to the metal bottom plate and covers the isolation band.

[0012] In an available implementation, the metal bottom plate is provided with adhesive sponge, and the metal bottom plate is attached to the side heat preservation foam through the adhesive sponge.

[0013] In an available implementation, the groove of the isolation band is gradually deepened from the position close to the bottom heat preservation foam to the position away from the bottom heat preservation foam.

[0014] In an available implementation, the isolation band is filled with high thermal resistance material, the high thermal resistance material is aerogel and vacuum insulation board, and the high thermal resistance material is in contact with the metal bottom plate and the side heat preservation foam.

[0015] In an available implementation, the groove of the isolation band is in a wave shape or a zigzag shape.

[0016] Another aspect of the present application provides a refrigerator comprising the anti-condensation refrigerating unit of any of the above.

[0017] From the above, the beneficial effects of the present application mainly include: first, the formation of condensation on the surface of the kitchen refrigerator is significantly reduced, and the appearance and use comfort of the refrigerator are improved; second, the production cost and maintenance cost are reduced through the optimization of the heat insulation design; third, the structural stability of the refrigerator is enhanced, and the service life is prolonged; fourth, the design of the cold air circulation circuit ensures the uniformity of the temperature inside the refrigerator and the refrigeration efficiency. In summary, the present application provides an efficient, economical and reliable anti-condensation solution for kitchen refrigerators. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings incorporated in and forming a part of the specification, illustrate preferred embodiments of the present application and, together with the description, serve to explain the principles of the present application. In the drawings:

[0019] Figure 1 is a structural schematic diagram of a refrigeration unit against condensation shown by the embodiments of the present application;

[0020] Figure 2 is a structural schematic diagram of a metal bottom plate shown by the embodiments of the present application.

[0021] Explanation of reference signs:

[0022] 10 - thermal insulation foam; 20 - metal bottom plate; 30 - evaporator; 40 - fan; 50 - air outlet; 60 - air return; 11 - top thermal insulation foam; 12 - side thermal insulation foam; 13 - bottom thermal insulation foam; 21 - isolation belt; 22 - adhesive sponge. DETAILED DESCRIPTION

[0023] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations may, however, be implemented in many different forms and should not be construed as limited to the examples set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the scope of example implementations to those skilled in the art. The features, structures, or characteristics described in connection with the examples can be combined in any suitable manner in one or more implementations. In the following description, numerous specific details are provided to give a thorough understanding of example implementations.

[0024] The prior art mainly uses anti-condensation pipes to heat the refrigerator shell or locally applies heating wires to improve the temperature to prevent condensation. These methods have a certain effect, but increase the production cost and maintenance cost. In particular, for kitchen refrigerators, the inner tank is mostly made of sheet metal material, which has a large thermal conductivity coefficient, and the cold energy is easily transferred to the sheet metal surface of the cabinet, causing the sheet metal surface to be more prone to form condensation water when the temperature difference is large, affecting the appearance, use comfort, and refrigerator performance and life. The effect of the prior art on such refrigerators is not ideal, and the cost is increased.

[0025] To solve the above problems, the embodiments of the present application provide a refrigeration unit against condensation, which is described in detail as follows: Figure 1As shown, it includes two components: thermal insulation foam 10 and metal bottom plate 20. The thermal insulation foam 10 includes top thermal insulation foam 11, side thermal insulation foam 12 and bottom thermal insulation foam 13. The top thermal insulation foam 11 is located above the unit, and its two ends are connected with two side thermal insulation foams 12 respectively, forming a "U" shaped structure. The bottom thermal insulation foam 13 is arranged between the bottoms of the two side thermal insulation foams 12, and cooperates with the top thermal insulation foam 11 to form a closed cold air circulation line. This path provides the necessary space for the circulation of cold air inside the unit.

[0026] The metal bottom plate 20 is located at the bottom of the unit away from the top thermal insulation foam 11. The side of the metal bottom plate 20 in contact with the side thermal insulation foam 12 is designed with an isolation band 21. The isolation band 21 is in the form of a groove, which aims to block or reduce the direct transfer of cold from the thermal insulation foam 10 to the metal bottom plate 20.

[0027] Among them, the main role of the thermal insulation foam 10 is to insulate the heat exchange between the inside and outside, reduce the loss of cold, and maintain the stability of the low-temperature environment inside the unit. The top thermal insulation foam 11, the side thermal insulation foam 12 and the bottom thermal insulation foam 13 together form a complete thermal insulation system, effectively preventing the leakage of cold air.

[0028] Further, the cold air circulation line surrounded by the top thermal insulation foam 11, the side thermal insulation foam 12 and the bottom thermal insulation foam 13 ensures the uniform distribution and effective circulation of cold air inside the unit, improving the refrigeration efficiency.

[0029] The metal bottom plate 20 is the bottom support structure of the unit, and its material usually has good thermal conductivity. However, in this scheme, through the isolation band 21, the conduction effect of the metal bottom plate 20 on the cold is effectively reduced, and the risk of condensation is reduced. The isolation band 21 is designed in the form of a groove, which significantly reduces the transfer of cold from the thermal insulation foam 10 to the metal bottom plate 20. At the same time, the groove structure also increases the thickness of the air layer, further improving the thermal insulation effect.

[0030] In the prior art, the inner container of the kitchen refrigerator is usually made of sheet metal material with high thermal conductivity, which causes the cold to be easily transferred to the surface of the box body, forming condensation water. The full coverage of the top thermal insulation foam 11, the side thermal insulation foam 12 and the bottom thermal insulation foam 13 significantly improves the thermal insulation performance of the unit and reduces the loss of cold. At the same time, the isolation band 21 is arranged between the metal bottom plate 20 and the side thermal insulation foam 12, which effectively blocks the direct transfer of cold from the thermal insulation foam 10 to the metal bottom plate 20, reducing the risk of condensation. Through the arrangement of the cold air circulation line, the uniform distribution and effective circulation of cold air inside the unit are ensured, the refrigeration efficiency is improved, and the condensation phenomenon is also reduced.

[0031] The basic principle of the application is based on heat preservation and insulation and blocking the transfer of cold. By enhancing the heat preservation performance of the unit and setting up an isolation belt 21 at the key position, the loss of cold and the risk of condensation are effectively reduced.

[0032] In some embodiments of the application, with reference to Figure 2 As shown in the original heat preservation foam 10 structure, an evaporator 30 and a fan 40 are added between the bottom heat preservation foam 13 and the top heat preservation foam 11. The evaporator 30 is located inside the cold air circulation line, near the air outlet 50, which is used to convert liquid refrigerant into gas, absorb and remove the heat around, so as to produce cold air. The fan 40 is located near the air return 60, which is used to drive the flow of cold air in the cold air circulation line, to ensure that the cold air can be evenly distributed and effectively circulated.

[0033] The air outlet 50 is located near the evaporator 30, which is the channel for the cold air to be discharged from the evaporator 30 and enter the cold air circulation line. The air return 60 is located near the fan 40, which is the channel for the cold air to be sucked in by the fan 40 after flowing in the cold air circulation line and then sent back to the evaporator 30 for cooling.

[0034] Specifically, the evaporator 30 absorbs and removes the heat around through the evaporation process of liquid refrigerant, so as to produce cold air. In the cold air circulation line, the evaporator 30 is the source of cold air, and its performance directly affects the refrigeration efficiency and effect of the unit.

[0035] The function of the fan 40 is to push the flow of cold air in the cold air circulation line. By driving the cold air to be discharged from the air outlet 50, to pass through the inside of the refrigerator, and then to be sucked in from the air return 60, a complete cold air circulation is formed. The speed and direction of the fan 40 can be adjusted to adapt to different refrigeration needs and environmental conditions.

[0036] The air outlet 50 and the air return 60 are respectively located near the evaporator 30 and the fan 40, which provide the necessary channel for the flow of cold air. By reasonably designing the position and size of the air outlet 50 and the air return 60, the distribution and circulation efficiency of cold air in the refrigerator can be optimized.

[0037] The embodiment further improves the refrigeration efficiency and effect of the unit by adding the evaporator 30 and the fan 40, and designing the air outlet 50 and the air return 60. The evaporator 30 can efficiently convert liquid refrigerant into gas to produce a large amount of cold air. The fan 40 can push the rapid flow of cold air in the cold air circulation line, to ensure that the cold air can be evenly distributed to every corner of the refrigerator.

[0038] Meanwhile, by reasonably designing the positions and sizes of the air outlet 50 and the air return outlet 60, the cold air can be prevented from forming a dead angle or a short circuit in the refrigerator, and the utilization rate and circulation efficiency of the cold air can be improved. This not only helps to reduce the temperature inside the refrigerator, but also reduces the loss of cold energy and the risk of condensation.

[0039] In some embodiments of the present application, continuing to refer to Figure 2 As shown in the figure, the isolation belt 21 is in a ring structure, that is, the isolation belt 21 extends around the edge of the metal bottom plate 20 to form a continuous barrier area. The abutting position of the edge side heat preservation foam 12 and the metal bottom plate 20 is covered on the isolation belt 21, which ensures that the cold energy transmission path from the heat preservation foam to the metal bottom plate is effectively blocked.

[0040] Specifically, the ring design enables the isolation belt 21 to cover the edge area of the metal bottom plate 20 in all directions, forming a solid cold energy barrier. This design not only improves the blocking efficiency, but also ensures the continuity of the barrier, avoiding the possibility of cold energy leakage through the unblocked area. Further, by setting the abutting position of the edge side heat preservation foam 12 and the metal bottom plate 20 on the isolation belt 21, the cold energy transmission path is effectively blocked. This abutting method not only enhances the heat preservation effect, but also ensures the stability of the unit structure.

[0041] In some embodiments of the present application, an adhesive sponge 22 is provided on the metal bottom plate 20, and the metal bottom plate 20 is bonded to the edge side heat preservation foam 12 through the adhesive sponge 22. As a connecting medium, the adhesive sponge 22 ensures that the connection between the metal bottom plate 20 and the edge side heat preservation foam 12 is not only tight but also stable, while also providing additional cushioning and sound insulation effects.

[0042] It can be understood that the adhesive sponge 22 is a material with adhesion and elasticity, which can be tightly attached between the metal bottom plate 20 and the edge side heat preservation foam 12 to form a stable connection layer. In addition, the adhesive sponge 22 also has certain sound insulation and cushioning effects, which can reduce the noise and vibration during the operation of the unit. The connection of the edge side heat preservation foam 12 to the metal bottom plate 20 through the adhesive sponge 22 ensures the closedness and heat preservation performance of the cold air circulation line, and also plays a role in isolating the exchange of internal and external heat, reducing the loss of cold energy.

[0043] The adhesion and elasticity of the adhesive sponge 22 make the connection between the metal bottom plate 20 and the edge side heat preservation foam 12 more stable, improving the structural stability of the unit. Compared with traditional connection methods (such as screw fixing, welding, etc.), the connection method of the adhesive sponge 22 is simpler, faster and lower in cost, optimizing the connection process and production efficiency.

[0044] In some embodiments of the present application, the groove depth of the isolation strip 21 gradually deepens from the position close to the bottom thermal insulation foam 13 to the position away from the bottom thermal insulation foam 13.

[0045] In this embodiment, the isolation strip 21 has grooves with different depths, which gradually deepen from the position close to the bottom thermal insulation foam 13 to the position away from the bottom thermal insulation foam 13. Specifically, the bottom of the isolation strip 21 forms an inclined surface that is parallel or forms an angle with the bottom thermal insulation foam 13, so that the groove depth gradually increases from one end to the other end. This ensures that the isolation strip 21 has different accommodation capacities at different positions to adapt to different installation requirements or structural characteristics.

[0046] Specifically, by gradually deepening the groove depth of the isolation strip 21, precise control of cold air transmission is achieved. At the position close to the bottom thermal insulation foam 13, the groove is shallow, which helps to maintain the cold air transmission in this area and reduce the leakage of cold air to the bottom; while at the position away from the bottom thermal insulation foam 13, the groove is deeper, providing more space for cold air to flow, which helps to guide the cold air to spread to the upper part of the unit or other areas that need to be cooled. By isolating the conduction of cold energy, this design not only improves the refrigeration efficiency of the unit, but also reduces energy consumption.

[0047] In some embodiments of the present application, the isolation strip 21 is filled with high thermal resistance material, and the high thermal resistance material is aerogel and vacuum insulation board, which is in contact with the metal bottom plate 20 and the side thermal insulation foam 12.

[0048] In this embodiment, the high thermal resistance material includes aerogel and vacuum insulation board. These materials have extremely low thermal conductivity, which can effectively block the transmission of heat. Aerogel is known for its excellent thermal insulation performance and stability, while vacuum insulation board further improves the insulation effect by reducing heat conduction and convection through its internal vacuum layer.

[0049] The high thermal resistance material includes aerogel and vacuum insulation board. These materials have extremely low thermal conductivity, which can effectively block the transmission of cold energy. Aerogel has good thermal insulation performance and stability, while vacuum insulation board further improves the insulation effect by reducing heat conduction and convection through its internal vacuum layer. The filling of high thermal resistance material significantly enhances the thermal insulation performance of the isolation strip 21.

[0050] In this embodiment, by introducing high thermal resistance material and filling it inside the isolation strip 21, and in close contact with the metal bottom plate 20 and the side thermal insulation foam 12, a high-efficiency thermal insulation barrier is formed. This barrier can effectively block the transmission of cold energy while maintaining the stability of the structure, thereby ensuring that the low-temperature environment inside the refrigerator is maintained and reducing the formation of condensation on the sheet metal surface.

[0051] In some embodiments of the present application, the grooves of the isolation strip 21 are wavy or zigzag shaped.

[0052] The wavy or zigzag shape increases the contact area of the isolation strip 21 with the surrounding structure, improves the blocking effect of heat conduction, and also enhances the structural stability through its unique shape. The wavy or zigzag grooves can more effectively absorb and disperse stress, preventing structural damage caused by temperature changes or mechanical vibrations. At the same time, the edge side insulation foam 12 closely matches the wavy or zigzag grooves of the isolation strip 21, forming a complete thermal insulation system. This design not only improves the thermal insulation performance of the refrigerator, but also enhances its structural stability.

[0053] In another aspect, the embodiments of the present application provide a kitchen refrigerator comprising the anti-condensation refrigeration unit of any of the above embodiments.

[0054] From the above, it can be seen that the present application provides an anti-condensation refrigeration unit and a kitchen refrigerator to solve the condensation problem caused by the large thermal conductivity coefficient of the metal inner tank of the kitchen refrigerator.

[0055] The refrigeration unit is composed of insulation foam, metal bottom plate and other components. During use, after the refrigeration unit is started, the evaporator produces cold air, which is driven by the fan and circulates in the cold air circulation line formed by the top insulation foam, edge side insulation foam and bottom insulation foam. The cold air flows out from the air outlet near the evaporator, passes through the inside of the refrigerator, and is sucked in by the air return near the fan, forming a closed loop.

[0056] The groove structure of the isolation strip improves the thermal insulation effect, and the high thermal resistance material (such as aerogel and vacuum insulation panel) filled in the grooves further blocks the transfer of cold to the metal bottom plate. In addition, the wavy or zigzag groove shape can effectively disperse stress and enhance structural stability. Through the adhesive sponge, the close fit between the metal bottom plate and the edge side insulation foam is ensured, further improving the thermal insulation performance. The design of the groove depth of the isolation strip gradually deepening from the bottom to the top helps to better adapt to the temperature gradient change and improve the thermal insulation efficiency.

[0057] The application provides an anti-condensation refrigeration unit and a kitchen refrigerator. The top of the existing kitchen refrigerator is seriously affected by the assembly gap between the refrigeration unit and the cabinet and the sheet metal heat conduction of the cabinet top. The application blocks the heat conduction treatment structure at the position, changes the original continuous whole structure scheme of the metal bottom plate, and transmits the cold air from the heat preservation foam to the cabinet bottom plate outer surface through the whole bottom plate to form condensation. When the metal bottom plate is processed by laser cutting, the part of the metal bottom plate in contact with the heat preservation foam is cut into a ring-shaped isolation belt to form a metal bottom plate isolation part, block the conduction of the cold quantity, greatly reduce the surface condensation, reduce the risk of electrical safety and the increase of energy consumption, and the process production is convenient, and no additional heating components are added, and the cost is greatly reduced.

[0058] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the disclosure being indicated by the following claims.

Claims

1. A refrigeration unit with anti-condensation properties, characterized in that, include: Thermal insulation foam (10); the thermal insulation foam (10) includes top thermal insulation foam (11), side thermal insulation foam (12) and bottom thermal insulation foam (13); The top insulation foam (11) is connected to a side insulation foam (12) at each end, and the bottom insulation foam (13) is located between the two side insulation foams (12). The gap between the top insulation foam (11), the side insulation foam (12) and the bottom insulation foam (13) forms a cold air circulation line. The side insulation foam (12) is provided with a metal base plate (20) at one end away from the top insulation foam (11). The side of the metal base plate (20) that contacts the side insulation foam (12) is provided with an isolation strip (21), which is a groove.

2. The anti-condensation refrigeration unit according to claim 1, characterized in that, An evaporator (30) and a fan (40) are provided between the bottom insulation foam (13) and the top insulation foam (11); The air circulation circuit has an air outlet (50) and a return air outlet (60). The air outlet (50) is located on the side close to the evaporator (30), and the return air outlet (60) is located on the side close to the fan (40).

3. The anti-condensation refrigeration unit according to claim 1, characterized in that, The isolation strip (21) is ring-shaped, and the side insulation foam (12) and the metal base plate (20) are attached to the isolation strip (21).

4. The anti-condensation refrigeration unit according to claim 1, characterized in that, The metal base plate (20) is provided with adhesive sponge (22), and the metal base plate (20) is bonded to the side insulation foam (12) through the adhesive sponge (22).

5. A refrigeration unit for preventing condensation according to claim 3, characterized in that, The groove depth of the isolation strip (21) gradually increases from the position near the bottom insulation foam (13) to the position away from the bottom insulation foam (13).

6. A refrigeration unit for preventing condensation according to claim 1, characterized in that, The isolation strip (21) is filled with a high thermal resistance material, which is aerogel and vacuum insulation board. The high thermal resistance material is in contact with the metal base plate (20) and the side insulation foam (12).

7. A refrigeration unit for preventing condensation according to claim 1, characterized in that, The groove shape of the isolation strip (21) is wavy or sawtooth.

8. A kitchen refrigerator, characterized in that, This includes a refrigeration unit with anti-condensation as described in any one of claims 1-7.

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