New-structure first-level energy efficiency direct-cooling kitchen refrigerator

Abstract

The utility model discloses a novel-structure first-level energy efficiency direct-cooling kitchen refrigerator which comprises a freezing chamber refrigerating system located in the upper area of a refrigerator body assembly and a refrigerating chamber refrigerating system located in the lower area of the refrigerator body assembly. The freezing chamber refrigerating system comprises a freezing chamber compressor, a freezing chamber condenser assembly, a capillary throttling device and an evaporator which sequentially and circularly act and perform heat exchange; the refrigerating chamber refrigerating system comprises a refrigerating chamber compressor, a refrigerating chamber condenser assembly, a capillary throttling device and an evaporator which sequentially and circularly act and perform heat exchange; through the optimized and improved design of the product, the electric energy consumption and the manufacturing cost are further reduced, and the freezing and refrigerating temperatures can quickly reach the specified temperature, so that the beneficial effects of improving the working efficiency of the refrigerator, saving the electric energy and reducing the cost are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen refrigerators, in particular to a first-level energy-efficiency direct-cooling kitchen refrigerator with a new structure. Background Art

[0002] In order to meet people's requirements for food hygiene, food can be kept fresh and frozen when stored in the refrigerator, and cannot undergo qualitative changes. As a user, it can also achieve energy saving, environmental protection, and high-quality and low-priced products. The four-door direct cooling kitchen refrigerator has an effective storage capacity of 880 liters. At the same time, the freezer compartment is required to reach below -15℃ and the refrigerator compartment is -1~10℃.

[0003] However, the current market cannot achieve first-level energy efficiency, that is, when using the refrigerator, it consumes more electricity, the freezing and refrigeration temperatures cannot reach the specified temperature quickly, and the price of refrigerators is relatively expensive, which affects consumers' purchasing power and cannot meet market demand. Utility Model Content

[0004] In view of the above technical problems in the related art, the present invention proposes a first-level energy-efficiency direct-cooling kitchen refrigerator with a new structure, which can overcome the above-mentioned shortcomings of the prior art.

[0005] In order to achieve the above technical purpose, the technical solution of the utility model is implemented as follows:

[0006] A new structure first-class energy-efficient direct cooling kitchen refrigerator;

[0007] This new structure first-level energy-efficient direct cooling kitchen refrigerator includes a freezer refrigeration system located in the upper area of ​​the cabinet assembly and a refrigerator refrigeration system in the lower area. The freezer refrigeration system includes a freezer compressor, a freezer condenser assembly, a capillary throttling device and an evaporator that circulate and perform work and heat exchange in sequence. The refrigerator refrigeration system includes a refrigerator compressor, a refrigerator condenser assembly, a capillary throttling device and an evaporator that circulate and perform work and heat exchange in sequence.

[0008] Furthermore, the freezer compartment compressor, freezer compartment condenser assembly, and the refrigerator compartment compressor, refrigerator compartment condenser assembly are all compressor and condenser assemblies adapted to R290 and R600a refrigerant media.

[0009] Furthermore, when the freezer refrigeration system is cooling, the high-temperature and high-pressure R290 and R600a refrigerants discharged from the freezer compressor are cooled by the freezer condenser assembly, become liquid and release heat, and are throttled by the capillary throttling device to become low-pressure liquid. After entering the evaporator, they evaporate and absorb the surrounding cold energy, thereby cooling the cabinet to achieve the purpose of cooling. After coming out of the evaporator, the R290 and R600a refrigerants become low-temperature and low-pressure saturated refrigerant vapors, and flow back into the freezer compressor for compression and continuous circulation to perform work.

[0010] Furthermore, when the cold storage room refrigeration system is cooling, the high-temperature and high-pressure R290 and R600a refrigerants discharged from the cold storage room compressor are cooled by the cold storage room condenser assembly, become liquid and release heat, and are throttled by the capillary throttling device, become low-pressure liquid, and evaporate after entering the evaporator to absorb the surrounding cold energy, thereby cooling the box to achieve the purpose of refrigeration. After coming out of the evaporator, the R290 and R600a refrigerants become low-temperature and low-pressure saturated refrigerant vapors, and flow back into the cold storage room compressor for compression and continuous circulation to perform work.

[0011] Furthermore, heating pipes are provided around the refrigerator body, and the heat discharged by the freezer compressor and the freezer condenser assembly is transported to the heating pipes provided around the refrigerator body. The heat input into the heating pipes is used to prevent condensation when the refrigerator door contacts the refrigerator body.

[0012] Furthermore, the freezer compartment condenser assembly and the refrigerator compartment condenser assembly are both connected to a condenser fan.

[0013] Furthermore, the condenser fan used for heat dissipation of the freezer compartment condenser assembly and the refrigerator compartment condenser assembly is an axial flow fan, and the power of the axial flow fan is 5W.

[0014] Furthermore, the evaporator is an aluminum tube evaporator made of aluminum tubes; the amount of aluminum tubes in the aluminum tube evaporator is 5 kg.

[0015] Furthermore, the freezer compartment refrigeration system includes a refrigeration cycle fan module arranged in the freezer compartment, and the refrigeration cycle fan module includes a DC refrigeration cycle fan.

[0016] Furthermore, a middle straight gear assembly is vertically arranged in the middle of the front side of the box assembly, and a freezer compartment middle straight gear heating wire and a refrigerator compartment middle straight gear heating wire are respectively arranged on the upper and lower parts of the middle straight gear assembly.

[0017] The beneficial effects of the present invention are as follows: through the optimized and improved design of the product of the present invention, the power consumption and production cost are further reduced, and the freezing and refrigeration temperatures can quickly reach the specified temperature, thereby achieving the beneficial effects of improving the working efficiency of the refrigerator, saving power and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the overall structure of a first-level energy-efficiency direct-cooling kitchen refrigerator with a new structure according to an embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of a freezer compartment refrigeration system of a first-level energy-efficient direct-cooling kitchen refrigerator with a new structure according to an embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of a refrigeration system for a refrigerator compartment of a first-level energy-efficient direct-cooling kitchen refrigerator with a new structure according to an embodiment of the present utility model;

[0022] In the figure: 1. Cabinet assembly; 2. Freezer compressor; 3. Freezer compressor accessories; 4. Freezer condenser assembly; 5. Refrigerator compressor; 6. Refrigerator compressor accessories; 7. Axial fan; 8. Filter; 9. Refrigerator condenser assembly; 10. Protective net; 11. Power cord with plug; 12. Decorative panel; 13. Digital thermostat; 14. Grid; 15. Temperature probe fixing cover; 16. Upper left hinge; 17. Upper right hinge; 18. Door seal Sealing ring; 19. Spring hinge; 20. Door panel assembly A; 21. Center right hinge; 22. Door panel assembly B; 23. Center left hinge; 24. Pallet; 25. Grid mounting plate; 26. Center straight gear assembly; 27. Universal flat wheel; 28. Universal flat wheel; 29. ​​Drain connector; 30. Refrigeration cycle fan module; 31. Digital display thermostat probe; 32. LED driver power supply; 33. Center straight gear heating wire for freezer compartment; 34. Center straight gear heating wire for refrigerator compartment. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0024] It should be understood that in the description of the embodiments of the present invention, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the embodiments of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0025] like Figure 1-3 As shown, a new structure first-level energy efficiency direct cooling kitchen refrigerator according to an embodiment of the present invention includes a freezer refrigeration system located in the upper area of ​​the box assembly 1 and a refrigerator refrigeration system in the lower area. The freezer refrigeration system includes a freezer compressor 2, a freezer condenser assembly 4, a capillary throttling device and an evaporator that circulate and perform work and heat exchange in sequence. The refrigerator refrigeration system includes a refrigerator compressor 5, a refrigerator condenser assembly 9, a capillary throttling device and an evaporator that circulate and perform heat exchange in sequence.

[0026] According to a new structure first-level energy efficiency direct cooling kitchen refrigerator described in an embodiment of the present invention, in a specific embodiment, the freezer compressor 2, freezer condenser assembly 4 and refrigerator compressor 5, refrigerator condenser assembly 9 are all compressors and condenser assemblies adapted to R290 and R600a refrigerants.

[0027] According to a new structure first-level energy-efficiency direct cooling kitchen refrigerator described in an embodiment of the present invention, in a specific embodiment, when the freezer refrigeration system is cooling, the high-temperature and high-pressure R290 and R600a refrigerants discharged by the freezer compressor 2 are cooled by the freezer condenser assembly 4, become liquid and release heat, and after throttling by the capillary throttling device, become low-pressure liquid, and evaporate after entering the evaporator to absorb the surrounding cold energy, thereby cooling the cabinet to achieve the purpose of refrigeration. After coming out of the evaporator, the R290 and R600a refrigerants become low-temperature and low-pressure saturated refrigerant vapors, and flow back into the freezer compressor 2 for compression and continuous circulation to perform work.

[0028] According to a new structure first-level energy efficiency direct cooling kitchen refrigerator described in an embodiment of the present invention, in a specific embodiment, when the refrigerator compartment refrigeration system is cooling, the high-temperature and high-pressure R290 and R600a refrigerants discharged by the refrigerator compartment compressor 5 are cooled by the refrigerator compartment condenser assembly 9, become liquid and release heat, and after throttling by the capillary throttling device, become low-pressure liquid, and evaporate after entering the evaporator to absorb the surrounding cold energy, thereby cooling the cabinet to achieve the purpose of refrigeration. After coming out of the evaporator, the R290 and R600a refrigerants become low-temperature and low-pressure saturated refrigerant vapors, and flow back into the refrigerator compartment compressor 5 for compression and continuous circulation to perform work.

[0029] According to a new structure first-level energy-efficiency direct cooling kitchen refrigerator described in an embodiment of the present invention, in a specific embodiment, heating pipes are provided around the refrigerator body, and the heat discharged by the freezer compressor 2 and the freezer condenser assembly 4 is transported to the heating pipes provided around the refrigerator body. The heat input into the heating pipes is used to prevent condensation when the refrigerator door contacts the refrigerator body.

[0030] According to a novel structure first-level energy-efficiency direct-cooling kitchen refrigerator described in an embodiment of the present invention, in a specific embodiment, the freezer compartment condenser assembly 4 and the refrigerator compartment condenser assembly 9 are both connected to a condenser fan.

[0031] According to a new structure first-level energy efficiency direct cooling kitchen refrigerator described in an embodiment of the present utility model, in a specific embodiment, the condenser fan used for heat dissipation of the freezer compartment condenser assembly 4 and the refrigerator compartment condenser assembly 9 is an axial flow fan 7, and the power of the axial flow fan 7 is 5W.

[0032] According to a novel structure first-level energy-efficiency direct cooling kitchen refrigerator described in an embodiment of the present invention, in a specific embodiment, the evaporator is an aluminum tube evaporator made of aluminum tubes; the amount of aluminum tubes in the aluminum tube evaporator is 5 kg.

[0033] According to a new structure first-level energy efficiency direct cooling kitchen refrigerator described in an embodiment of the present invention, in a specific embodiment, the freezer refrigeration system includes a refrigeration circulation fan module 30 arranged in the freezer compartment, and the refrigeration circulation fan module 30 includes a DC refrigeration circulation fan.

[0034] According to a new structure first-level energy-efficiency direct cooling kitchen refrigerator described in an embodiment of the present invention, in a specific embodiment, a middle straight gear assembly 26 is vertically arranged in the middle of the front side of the box assembly 1, and a freezer compartment middle straight gear heating wire 33 and a refrigerator compartment middle straight gear heating wire 34 are respectively arranged in the upper and lower parts of the middle straight gear assembly 26.

[0035] In order to facilitate understanding of the above technical solutions of the present invention, the above technical solutions of the present invention are described in detail below through specific usage methods.

[0036] In specific use, according to the new structure first-level energy-efficient direct cooling kitchen refrigerator described in the utility model, the refrigerator-freezer type has a direct cooling refrigerator with a freezing upper layer and a refrigeration lower layer.

[0037] Among them, the kitchen refrigerator adopts the new R290 and R600a refrigerants. The heating wire around the refrigerator door frame is changed to the compressor exhaust pipe to discharge hot air to the heating pipe to prevent condensation on the refrigerator door. During cooling, the high-temperature gas is discharged through the compressor exhaust pipe and then a part is separated to the door frame after passing through the condenser. Then, the air flow returns to the compressor and continuously circulates to heat the door frame. The condensing fan for heat dissipation of the condenser is changed from the original shaded pole 26W fan to a 5W axial flow fan 7. In order to better improve the cooling effect, a refrigeration cycle fan module 30 is installed in the machine, which can quickly cool the temperature in the box. The evaporator coil in the refrigerator adopts an aluminum tube evaporator. Through the above improvements, the new structure first-level energy efficiency direct cooling kitchen refrigerator described in the utility model can achieve first-level energy efficiency.

[0038] More specifically, the present invention proposes using a low-power axial flow fan for the condensing fan. Similar products use shaded-pole fans, which have a minimum power of 26W. When the machine is cooling, the condensing fan is always running, that is, when the compressor starts, the condensing fan also starts, which results in a high power consumption. The present invention adopts a 5W axial flow fan 7. After testing, it has been verified that the 5W axial flow fan 7 can also dissipate the heat of the system and achieve the purpose of cooling. The difference between the two is 21W, which can effectively reduce the machine power and energy consumption.

[0039] This utility model uses high-temperature exhaust from a compressor to prevent condensation on the refrigerator door. During cooling, the temperature difference between the inside and outside of the refrigerator door can easily cause condensation on the door, freezing the door and the refrigerator, and preventing the door from opening. Comparable products use heating wires around the refrigerator body to generate heat and prevent condensation. Two heating wires are located around the refrigerator, one for the freezer and one for the refrigerator. The freezer heating wire has a power of 9W / m², for a total of 3.85m², while the refrigerator heating wire has a power of 5W / m². Whenever the refrigerator is powered on, both heating wires heat up, increasing the power by 50W. The utility model utilizes the compressor exhaust pipe temperature, diverting a portion of the air after passing through the condenser to serve as heating pipes around the refrigerator body. Since the exhaust pipe temperature can reach 40°C, it prevents condensation on the refrigerator door.

[0040] To achieve the above objectives, more specifically, the present invention utilizes an advanced aluminum tube evaporator, replacing the conventional copper tube evaporator. Direct-cool refrigerators typically use copper tubes for their freezer and refrigerator compartments, with the average usage of 2kg. An aluminum tube evaporator uses 5kg. Based on current market prices, using aluminum tubes saves over 10 yuan per machine. The aluminum tube evaporator utilizes a crushing process to increase the contact area between the tube and the refrigerator liner, thereby expanding the cooling area. However, aluminum tubes are susceptible to rot, so a protective film is added to the surface to provide corrosion resistance. While maintaining the machine's cooling performance, aluminum tube evaporators are the future development direction for kitchen refrigerators and save manufacturing costs.

[0041] To achieve the above objectives, more specifically, the present invention incorporates a DC circulating fan within the freezer compartment, enabling faster and more uniform cooling. The key to the refrigeration performance of direct-cooling refrigerators and freezers lies in the freezer compartment, which must maintain a freezing temperature below -15°C. Due to its Class 1 energy efficiency, the compressor cannot be overpowered. Adding a 12V DC circulating fan to the freezer compartment effectively solves this problem, achieving a temperature of -15°C within a specified timeframe while maintaining uniform and rapid cooling.

[0042] To sum up, with the help of the above-mentioned technical solution of the utility model, through the optimization and improvement design of the product of the utility model, the power consumption and production cost are further reduced, and the freezing and refrigeration temperatures can quickly reach the specified temperature, thereby achieving the beneficial effects of improving the working efficiency of the refrigerator, saving electricity and reducing costs.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A new structure first-level energy efficiency direct cooling kitchen refrigerator, characterized by: The invention comprises a freezer refrigeration system located in the upper area of ​​a box assembly (1) and a refrigerator refrigeration system located in the lower area. The freezer refrigeration system comprises a freezer compressor (2) which performs work in a cycle and performs heat exchange, a freezer condenser assembly (4), a capillary throttling device and an evaporator. The refrigerator refrigeration system comprises a refrigerator compressor (5) which performs work in a cycle and performs heat exchange, a refrigerator condenser assembly (9), a capillary throttling device and an evaporator.

2. A new structure first-level energy efficiency direct cooling kitchen refrigerator according to claim 1, characterized in that: The freezer compartment compressor (2), freezer compartment condenser assembly (4), refrigerator compartment compressor (5), and refrigerator compartment condenser assembly (9) are all compressor and condenser assemblies adapted to R290 and R600a refrigerant media.

3. A new structure first-level energy efficiency direct cooling kitchen refrigerator according to claim 2, characterized in that: When the freezer refrigeration system is refrigerating, the high-temperature and high-pressure R290 and R600a refrigerants discharged from the freezer compressor (2) are cooled by the freezer condenser assembly (4), become liquid and release heat, and are throttled by the capillary throttling device, become low-pressure liquid, and evaporate after entering the evaporator to absorb the surrounding cold, thereby cooling the box body to achieve the purpose of refrigeration. After exiting the evaporator, the R290 and R600a refrigerants become low-temperature and low-pressure saturated refrigerant vapors, and flow back into the freezer compressor (2) to be compressed and continuously circulate to perform work.

4. A new structure first-level energy efficiency direct cooling kitchen refrigerator according to claim 2, characterized in that: When the cold storage room refrigeration system is refrigerating, the high-temperature and high-pressure R290 and R600a refrigerants discharged from the cold storage room compressor (5) are cooled by the cold storage room condenser assembly (9), become liquid and release heat, and are throttled by the capillary throttling device, become low-pressure liquid, and evaporate after entering the evaporator to absorb the surrounding cold energy, thereby cooling the box body to achieve the purpose of refrigeration. After exiting the evaporator, the R290 and R600a refrigerants become low-temperature and low-pressure saturated refrigerant vapors, and flow back into the cold storage room compressor (5) to be compressed and continuously circulate to perform work.

5. A new structure first-level energy efficiency direct cooling kitchen refrigerator according to claim 1, characterized in that: Heating pipes are provided around the refrigerator body. Heat discharged from the freezer compressor (2) and the freezer condenser assembly (4) is transported to the heating pipes provided around the refrigerator body. The heat input into the heating pipes is used to prevent condensation when the refrigerator door contacts the refrigerator body.

6. A new structure first-level energy efficiency direct cooling kitchen refrigerator according to claim 1, characterized in that: The freezing chamber condenser assembly (4) and the refrigerating chamber condenser assembly (9) are both connected to condenser fans.

7. A new structure first-level energy efficiency direct cooling kitchen refrigerator according to claim 6, characterized in that: The condenser fan used for dissipating heat from the freezing chamber condenser assembly (4) and the refrigerating chamber condenser assembly (9) is an axial flow fan (7), and the power of the axial flow fan (7) is 5W.

8. The novel structure first-level energy-efficient direct cooling kitchen refrigerator according to claim 1 is characterized in that: The evaporator is an aluminum tube evaporator made of aluminum tubes; the amount of aluminum tubes in the aluminum tube evaporator is 5 kg.

9. A new structure first-level energy efficiency direct cooling kitchen refrigerator according to claim 1, characterized in that: The freezing chamber refrigeration system comprises a refrigeration cycle fan module (30) arranged in the freezing chamber, and the refrigeration cycle fan module (30) comprises a direct current refrigeration cycle fan.

10. A new structure first-level energy efficiency direct cooling kitchen refrigerator according to claim 1, characterized in that: A middle straight gear assembly (26) is vertically arranged in the middle of the front side of the box assembly (1), and a freezing chamber middle straight gear heating wire (33) and a refrigeration chamber middle straight gear heating wire (34) are respectively arranged in the upper and lower parts of the middle straight gear assembly (26).

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