Bottom-mounted evaporator and refrigerator

Abstract

The utility model discloses a bottom-mounted evaporator and a refrigerator, and relates to the technical field of refrigeration equipment, the bottom-mounted evaporator comprises an evaporator arranged at the bottom of the refrigerator, and a centrifugal fan is arranged below the evaporator; the evaporator is in a disc shape formed by spirally coiling a micro-channel pipe, one end of the micro-channel pipe is communicated with the condenser, and the other end of the micro-channel pipe is communicated with the compressor; an air outlet is formed in the upper portion of the evaporator and communicates with an air duct of the refrigerator, and the air duct is provided with exhaust outlets communicating with a freezing chamber and a refrigerating chamber of the refrigerator correspondingly. The refrigerator provided with the bottom-mounted evaporator comprises a refrigerator inner container, the inner space of the refrigerator inner container is divided into a refrigerating chamber and a freezing chamber, an evaporator chamber is arranged below the refrigerator inner container, and an evaporator is fixedly arranged in the evaporator chamber; the thickness of the back plate of the refrigerator can be reduced, the requirement for an ultra-thin refrigerator is met, meanwhile, the size of an evaporator chamber is reduced, and the volume of the refrigerator is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration equipment, in particular to a bottom-mounted evaporator and a refrigerator. Background Art

[0002] At present, the evaporator mainly used in refrigerators and other refrigeration appliances is a fin-tube evaporator. Due to its structural function, it is large in size, which affects the volume of the refrigerator. The fin-tube evaporator of most existing refrigerators is fixed to the rear wall of the refrigerator compartment together with the fan. In addition, the influence of components such as air ducts increases the thickness of the refrigerator back panel, which cannot meet the needs of more and more users for "ultra-thin" refrigerators.

[0003] In order to reduce the thickness of the refrigerator, meet the user's demand for an "ultra-thin" refrigerator, and increase the volume of the refrigerator, a bottom-mounted evaporator refrigerator has appeared on the market. That is, the fin-tube evaporator is arranged horizontally and tilted at the bottom of the refrigerator. In order to ensure sufficient return air, the front of the drainage slope is in contact with the front of the evaporator, which supports the evaporator while using the inclined surface to drain water. However, since the evaporator is placed at an angle, the height difference from the evaporator to the drain port is large, and the space here cannot be used, thereby wasting the volume of the refrigerator. Utility Model Content

[0004] The utility model aims to provide a bottom-mounted evaporator and a refrigerator, which can reduce the thickness of a refrigerator back plate to meet the demand for an ultra-thin refrigerator, while reducing the volume of an evaporator chamber and increasing the capacity of the refrigerator.

[0005] The utility model comprises an evaporator arranged at the bottom of the refrigerator, a centrifugal fan is arranged below the evaporator; the evaporator is in the shape of a disk formed by spirally winding microchannel tubes, one end of the microchannel tubes is connected to a condenser, and the other end is connected to a compressor; an air outlet is arranged on the side wall of the evaporator chamber, the air outlet is connected to an air duct of the refrigerator, and an exhaust port which is respectively connected to a freezing chamber and a refrigerating chamber of the refrigerator is arranged on the air duct.

[0006] Preferably, the microchannel tube is flat in shape, and a plurality of fine channels for liquid to pass through are arranged inside the microchannel tube. The microchannel tube is twisted along the width direction thereof, thereby forming an evaporator with a certain thickness.

[0007] Preferably, gaps are left between the microchannel tubes for gas to pass through, and fins are provided in the gaps, and the fins extend along the thickness direction of the evaporator.

[0008] Preferably, the evaporator and the centrifugal fan are in the same vertical plane, and the evaporator and the centrifugal fan are coaxially arranged in the vertical direction.

[0009] Preferably, the outer diameter of the evaporator is adapted to the outer diameter of the centrifugal fan.

[0010] Preferably, a gap is left between the evaporator and the centrifugal fan in the vertical direction for air to pass through.

[0011] Preferably, a water receiving pan is provided below the evaporator and the centrifugal fan, the water receiving pan is high on the sides and low in the middle, the evaporator and the centrifugal fan are located in the middle position above the water receiving pan, and the water receiving pan is connected to a drain pipe.

[0012] Preferably, a plurality of air outlets are provided and evenly distributed on the back of the refrigerator's refrigerating chamber and freezing chamber.

[0013] Preferably, the air duct and the air outlet are embedded in the foam layer on the back of the freezer compartment and the refrigerator compartment.

[0014] A refrigerator equipped with a bottom-mounted evaporator as described above comprises a refrigerator liner, the inner space of which is divided into a refrigerating chamber and a freezing chamber, an evaporator chamber is arranged below the refrigerator liner, and an evaporator is fixedly arranged in the evaporator chamber.

[0015] In summary, the utility model has the following beneficial effects:

[0016] 1. A new type of spiral evaporator is designed. The disc-shaped evaporator is adapted to the size of the centrifugal fan, so that the evaporator and the centrifugal fan can be placed in a vertical direction, which optimizes the return air path and makes the return air path smoother. It improves the disadvantage that the fin bottom evaporator needs to be tilted at a certain angle to ensure sufficient return air. The cooperation of the new spiral evaporator and the centrifugal fan releases the internal space of the box wasted by the existing centrifugal fan and evaporator being tilted or misplaced;

[0017] 2. Compared with the existing bottom-mounted evaporators on the market, the utility model has made a comprehensive innovation in the matching placement of the evaporator and the centrifugal fan. The evaporator and the centrifugal fan only need to be placed in parallel up and down, and there is no need to set a certain tilt angle for the evaporator to ensure sufficient return air, thus reducing the waste of space;

[0018] 3. The evaporator uses a microchannel tube, which is equipped with a number of independent thin tubes for liquid to pass through, which can increase the contact area between the liquid and the tube wall, thereby improving the heat transfer efficiency;

[0019] 4. The air duct is set in the foam layer and attached to the back of the inner tank, which releases the refrigerator volume occupied by the air duct back plate. At the same time, the evaporator and centrifugal fan are moved from the back of the refrigerator to the bottom of the refrigerator, further reducing the thickness of the refrigerator back plate to meet the use requirements for ultra-thin refrigerators. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the installation of a bottom-mounted evaporator of the utility model;

[0021] Figure 2is a schematic diagram of the structure of the evaporator;

[0022] Figure 3 is a schematic diagram of the structure of a microchannel tube;

[0023] Figure 4 A schematic diagram of the structure of a refrigerator equipped with a bottom-mounted evaporator;

[0024] Figure 5 Schematic diagram of the air duct structure of the refrigerator;

[0025] Figure 6 This is a schematic diagram of the refrigerator exhaust vent structure.

[0026] In the figure: 1. Evaporator; 2. Centrifugal fan; 3. Microchannel tube; 4. Air outlet; 5. Air duct; 6. Exhaust outlet; 7. Fins; 8. Drain tray; 9. Refrigerator liner; 10. Refrigerator compartment; 11. Freezer compartment; 12. Evaporator compartment. DETAILED DESCRIPTION

[0027] The utility model will be further described below in conjunction with the accompanying drawings.

[0028] The orientations mentioned in this specification are based on the orientations of the bottom-mounted evaporator and refrigerator of the utility model during normal operation, and do not limit the orientations during storage and transportation. They only represent relative position relationships, not absolute position relationships.

[0029] like Figures 1 to 3 As shown together, a bottom-mounted evaporator includes an evaporator 1 arranged at the bottom of the refrigerator, a centrifugal fan 2 is arranged below the evaporator 1, the evaporator 1 and the centrifugal fan 2 are in the same vertical plane, the evaporator 1 and the centrifugal fan 2 are coaxially arranged in the vertical direction, and a gap for air to pass through is left between the evaporator 1 and the centrifugal fan 2 in the vertical direction to ensure a better ventilation effect; the evaporator 1 is in the shape of a disc formed by spirally winding a microchannel tube 3, the outer diameter of the evaporator 1 is adapted to the outer diameter of the centrifugal fan 2, one end of the microchannel tube 3 is connected to the condenser, and the other end is connected to the compressor to form a circulation loop.

[0030] Furthermore, the microchannel tube 3 is flat in shape, and is provided with a number of mutually independent fine tubes for liquid to pass through, which can increase the contact area between the liquid and the tube wall, thereby improving the heat transfer efficiency; the microchannel tube 3 is coiled along its width direction, thereby forming an evaporator 1 with a certain thickness; gaps are left between the microchannel tubes 3 for gas to pass through, and fins 7 are provided in the gaps. The fins 7 are in the shape of corrugated plates formed by bending heat dissipation thin plates, and the fins 7 extend along the thickness direction of the evaporator 1 to ensure a better heat transfer effect.

[0031] Furthermore, an air outlet 4 is provided below the evaporator 1, and the air outlet 4 is connected to the air duct 5 of the refrigerator. The air duct 5 is provided with an exhaust port 6 which is connected to the freezer compartment 11 and the refrigerator compartment 10 of the refrigerator respectively; a plurality of exhaust ports 6 are provided and are evenly distributed on the back of the refrigerator compartment 10 and the freezer compartment 11; the air duct 5 and the exhaust port 6 are embedded in the foaming layer on the back of the refrigerator compartment 11 and the refrigerator compartment 10 to reduce the thickness of the refrigerator back plate.

[0032] Furthermore, a water receiving pan 8 is provided below the evaporator 1 and the centrifugal fan 2. The water receiving pan 8 is high on all sides and low in the middle to facilitate drainage. The evaporator 1 and the centrifugal fan 2 are located in the middle position above the water receiving pan 8. The water receiving pan 8 is connected to a drain pipe. After the condensed water on the evaporator 1 drips into the water receiving pan 8, it is discharged through the drain pipe.

[0033] like Figures 4 to 6 As shown, a refrigerator equipped with a bottom-mounted evaporator as described above, the refrigerator includes a refrigerator liner 9, the internal space of the refrigerator liner 9 is divided into a refrigerating chamber 10 and a freezing chamber 11, an evaporator chamber 12 is provided below the refrigerator liner 9, and an evaporator 1 is fixedly provided in the evaporator chamber 12; an evaporator 1 cover is provided above the evaporator chamber 12, which is used to isolate the freezing chamber 11 from the evaporator chamber 12; a defrosting mechanism is also included, the refrigerator adopts a hot air defrosting method, and uses the high-temperature and high-pressure refrigerant vapor discharged by the compressor to melt the frost layer on the surface of the evaporator 1; a heating wire can also be used to set appropriate defrosting control, and the heat of the electric heating wire is used for defrosting; the water receiving tray 8 is connected to the drain pipe, and the drain pipe can discharge the defrosted water into the evaporating dish of the compressor room, and the exhaust pipe temperature is used to drain and evaporate the water.

[0034] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A bottom-mounted evaporator, characterized in that: The invention comprises an evaporator (1) arranged at the bottom of a refrigerator, wherein a centrifugal fan (2) is arranged below the evaporator (1); the evaporator (1) is in the shape of a disk formed by spirally winding a microchannel tube (3), wherein one end of the microchannel tube (3) is connected to a condenser and the other end is connected to a compressor; an air outlet (4) is arranged above the evaporator (1), wherein the air outlet (4) is connected to an air duct (5) of the refrigerator, and the air duct (5) is provided with an exhaust port (6) respectively connected to a freezing chamber (11) and a refrigerating chamber (10) of the refrigerator.

2. A bottom-mounted evaporator as claimed in claim 1, characterized in that: The microchannel tube (3) is flat in shape, and is provided with a plurality of thin channels for liquid to pass through. The microchannel tube (3) is coiled along its width direction, thereby forming an evaporator (1) with a certain thickness.

3. A bottom-mounted evaporator as claimed in claim 1, characterized in that: Gaps are left between the microchannel tubes (3) for gas to pass through, and fins (7) are provided in the gaps. The fins (7) extend along the thickness direction of the evaporator (1).

4. A bottom-mounted evaporator as claimed in claim 1, characterized in that: The evaporator (1) and the centrifugal fan (2) are located on the same vertical plane, and the evaporator (1) and the centrifugal fan (2) are coaxially arranged in the vertical direction.

5. A bottom-mounted evaporator as claimed in claim 1, characterized in that: The outer diameter of the evaporator (1) is compatible with the outer diameter of the centrifugal fan (2).

6. A bottom-mounted evaporator as claimed in claim 1, characterized in that: A gap is left between the evaporator (1) and the centrifugal fan (2) in the vertical direction for air to pass through.

7. A bottom-mounted evaporator as claimed in claim 1, characterized in that: A water receiving pan (8) is provided below the evaporator (1) and the centrifugal fan (2). The water receiving pan (8) is high on the sides and low in the middle. The evaporator (1) and the centrifugal fan (2) are located in the middle position above the water receiving pan (8). The water receiving pan (8) is connected to a drainage pipe.

8. A bottom-mounted evaporator as claimed in claim 1, characterized in that: A plurality of air outlets (6) are provided and are evenly distributed on the back of the refrigerator refrigerating chamber (10) and the freezing chamber (11).

9. A bottom-mounted evaporator as claimed in claim 1, characterized in that: The air duct (5) and the air outlet (6) are embedded in the foaming layer on the back of the freezer compartment (11) and the refrigeration compartment (10) of the refrigerator.

10. A refrigerator equipped with a bottom-mounted evaporator according to any one of claims 1 to 9, characterized in that: The refrigerator comprises a refrigerator liner (9), the internal space of the refrigerator liner (9) being divided into a refrigerating chamber (10) and a freezing chamber (11), an evaporator chamber (12) being arranged below the refrigerator liner (9), and an evaporator (1) being fixedly arranged in the evaporator chamber (12).

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