A cold air machine for isolating frost residual heat and water vapor

Abstract

The application discloses an air cooler capable of isolating defrosting waste heat and water vapor, which comprises a casing, an air inlet and an air outlet are formed in the casing, an air inlet valve is arranged at the air inlet, an air outlet valve is arranged in the casing, a fan is arranged at the air outlet, a heat exchanger and an electric heating wire are arranged between the air inlet valve and the air outlet valve, the air outlet valve comprises a second mounting frame and a plurality of sealing plates which are rotatably arranged in the second mounting frame, the rotating axes of all the sealing plates are parallel, and all the sealing plates are driven by one same motor. The air inlet valve and the air outlet valve are arranged, and are closed when the electric heating wire defrosts, so that the overflow of waste heat and water vapor through the air inlet and the air outlet is prevented, the temperature in the cold storage is not affected, or water vapor is not condensed into frost on the ground or the surface of stored goods, the applicability of the air cooler is improved, and the air cooler has the characteristics of good defrosting effect and prevention of overflow of waste heat and water vapor.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of refrigeration equipment, in particular to a cold air machine capable of isolating defrosting heat and water vapor. BACKGROUND

[0002] Low-temperature refrigerators are usually below-15 DEG C, and the cold air machine used for refrigeration of the low-temperature refrigerator is usually placed inside the refrigerator. Because of continuous refrigeration and room temperature below freezing point, ice and frost will continuously accumulate on the heat exchange fins in the cold air machine. According to the size and other parameters of the heat exchange fins, sufficient ice and frost will be generated to block the air duct every 4-8 hours, the air volume will be attenuated, and the refrigerating capacity cannot meet the use requirements. At this time, defrosting is needed.

[0003] In the related art, electric heating wire defrosting is the most common. In the defrosting process, because the heating element is in communication with the indoor air, the residual heat generated by the electric heating wire and the water vapor generated by the sublimation of the ice and frost in the defrosting process will invade the low-temperature refrigerator, thereby causing the temperature of the refrigerator to fluctuate, or causing ice and frost to adhere to the ground or the surface of the stored objects, thereby affecting the refrigeration efficiency of the refrigerator, and there is room for improvement. SUMMARY

[0004] In order to reduce the overflow of water vapor and residual heat generated in the defrosting process, the present application provides a cold air machine capable of isolating defrosting heat and water vapor.

[0005] The cold air machine capable of isolating defrosting heat and water vapor provided by the present application adopts the following technical solution:

[0006] A cold air machine capable of isolating defrosting heat and water vapor, comprising a machine shell, an air inlet and an air outlet are formed in the machine shell, an air inlet damper is arranged at the air inlet, an air outlet damper is arranged in the machine shell, a fan is arranged at the air outlet, a heat exchanger and an electric heating wire are arranged between the air inlet damper and the air outlet damper, the air outlet damper comprises a second mounting frame and a sealing plate rotatably arranged in the second mounting frame, a plurality of sealing plates are arranged, the rotation axes of all the sealing plates are parallel, and all the sealing plates are driven by the same motor.

[0007] By adopting the above technical solution, in the defrosting process, the electric heating wire heats the ice and frost and forms water vapor, the arrangement of the air outlet damper can isolate the water vapor on one side of the sealing plate, prevent the water vapor or residual heat from adhering to the fan through the air outlet or entering the refrigerator, and thereby prevent the ice from being formed in the refrigerator or the temperature in the refrigerator from being affected.

[0008] Preferably, the air inlet damper comprises a first mounting frame and a plurality of air deflectors rotatably arranged in the first mounting frame, the rotation axes of all the air deflectors are parallel, and all the air deflectors are driven by the same motor.

[0009] By adopting the technical scheme, the air deflector is opened when the heat exchanger cools air, so that the air in the cold storage can enter the heat exchanger, and the air deflector is closed during defrosting, so that water vapor or residual heat cannot enter the cold storage through the air inlet, thereby preventing the cold storage from icing or affecting the internal temperature of the cold storage, and improving the applicability of the cold air machine.

[0010] Preferably, all the sealing plates are evenly distributed along the center line of the second mounting frame, any sealing plate is arranged obliquely, and the sealing plates on both sides of the center line of the second mounting frame are arranged in overlapping manner, and any sealing plate is provided with a sealing strip on both sides of the rotation axis thereof.

[0011] By adopting the technical scheme, if the water vapor adheres to the sealing plate and is not removed in time, it will freeze into frost on the sealing plate, which will also affect the defrosting effect of the cold air machine. Therefore, the oblique sealing plate can block the water vapor and make it slide down the oblique sealing plate and finally slide to the bottom of the cold air machine. The sealing strip can further improve the sealing performance of the overlapping sealing plates, thereby further reducing the probability of water vapor exposure through the gap between the overlapping sealing plates.

[0012] Preferably, a drainage groove is arranged on one side of the second mounting frame close to the heat exchanger in the shell, the drainage groove is arranged obliquely, a water storage groove is arranged at the bottom of the shell, and an electric heating wire is further arranged at the bottom of the drainage groove.

[0013] By adopting the technical scheme, the drainage groove and the water storage groove can collect the water droplets frozen on the oblique sealing plate and transport the water droplets to the water storage groove through the drainage groove. The electric heating wire can prevent the water droplets remaining in the drainage groove from freezing and affecting the transportation effect of the drainage groove.

[0014] Preferably, a mesh cover and a protective shell are arranged at the air outlet of the shell, and the mesh cover and the protective shell are fixed on both sides of the fan by bolts and nuts, respectively.

[0015] By adopting the technical scheme, the mesh cover and the protective shell can protect the fan. On the one hand, the mesh cover can filter and block the ice residues or impurities in the cold air machine during the suction process of the fan. On the other hand, the protective shell can prevent the fan from being damaged by external impurities.

[0016] Preferably, the shell is covered with a heat insulation plate.

[0017] By adopting the technical scheme, the electric heating wire can heat the shell during heating, and the heated shell can also affect the air temperature in the cold storage, thereby increasing the cooling cost. The heat insulation plate can reduce the heat dissipation from the shell and improve the cooling efficiency of the cold storage.

[0018] Preferably, the casing is provided with a drying drawer between the air outlet and the air outlet valve, and the drying drawer is filled with a moisture absorbent.

[0019] By adopting the above technical scheme, the drying drawer and the moisture absorbent can further absorb water vapor, prevent the air flow blown out during the refrigeration process of the air cooler from still containing water vapor, and prevent the ice formation in the cold storage after the air flow is blown into the cold storage. The moisture absorbent can dry the air flow, and the applicability of the air cooler is improved.

[0020] Preferably, the drying drawer comprises a drawer shell and a bent plate arranged in the drawer shell, the moisture absorbent is arranged on the side of the bent plate away from the air outlet valve, the bent plate and the side wall of the drawer shell form an air inlet channel, the first mesh plate is arranged at the air inlet channel, the bent plate and the top end of the drawer shell form an air outlet channel, and the second mesh plate is arranged at the air outlet channel.

[0021] By adopting the above technical scheme, the first mesh plate and the second mesh plate can block the moisture absorbent from falling out of the bent plate, and can also ventilate, which is conducive to allowing the air blown out by the air cooler to pass through the moisture absorbent and then be blown out by the fan, and specifically realizes the drying mode of the drying drawer on the air flow.

[0022] Preferably, the casing is provided with a water defrosting device between the air inlet valve and the air outlet valve.

[0023] By adopting the above technical scheme, the water defrosting device can remove ice and frost without heating, can reduce the generation of water vapor and residual heat, and the air inlet valve and the air outlet valve can also form a sealed environment to prevent defrosting water from leaking or splashing.

[0024] In summary, the present application has at least one of the following beneficial technical effects:

[0025] 1. The air inlet valve and the air outlet valve are closed when the electric heating wire defrosts, preventing residual heat and water vapor from overflowing through the air inlet and the air outlet, thereby affecting the temperature in the cold storage or causing water vapor to freeze into frost on the ground or the surface of stored goods, and improving the applicability of the air cooler;

[0026] 2. The water droplets condensed on the sealing plate are collected by the drainage groove and the water outlet groove, and are transported to the water storage tank through the drainage groove, which is conducive to condensing and collecting water vapor after defrosting in the air cooler, preventing water vapor from condensing on the sealing plate and freezing into frost, and thereby ensuring the defrosting effect of the air cooler;

[0027] 3. The drying drawer and the moisture absorbent can further dry the air flow, preventing the air flow blown out during the refrigeration process of the air cooler from still containing water vapor. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 Fig. 1 is a perspective view of the cold air machine according to the present application;

[0029] Figure 2 Fig. 2 is a side sectional view of the cold air machine according to the present application;

[0030] Figure 3 Fig. 3 is a schematic view of the cold air machine according to the present application, in which the casing has been hidden partially;

[0031] Figure 4 Fig. 4 is a side sectional view of the cold air machine according to the present application;

[0032] Figure 5 Fig. 5 is a schematic view of the cold air machine according to the present application, in which the casing has been hidden partially;

[0033] Reference signs: 1, casing; 11, air inlet; 12, air outlet; 13, heat insulation plate; 14, drainage groove; 15, water storage groove; 16, heat exchanger; 2, air inlet valve; 21, first mounting frame; 22, air deflector; 3, fan; 31, mesh cover; 32, protective shell; 4, air outlet valve; 41, second mounting frame; 42, sealing plate; 43, sealing strip; 5, drying drawer; 51, bent plate; 52, air inlet channel; 521, first mesh plate; 53, air outlet channel; 531, second mesh plate; 6, water defrosting device. DETAILED DESCRIPTION

[0034] The present application will be further described below with reference to the accompanying drawings. Figures 1-5 The present application will be further described below with reference to the accompanying drawings.

[0035] The present application discloses a cold air machine capable of isolating defrosting residual heat and water vapor.

[0036] Embodiment 1

[0037] Reference is made to Figure 1 and Figure 2The cold air machine capable of isolating frost heat and water vapor comprises a casing 1, an air inlet 11 and an air outlet 12 are formed in the casing 1, a heat exchanger 16 for refrigeration and an electric heating wire for defrosting are arranged in the casing 1, the casing 1 is covered with a heat insulation plate 13, the heat insulation plate 13 can reduce the heat dissipation in the casing 1 when the electric heating wire is heated, and the cooling efficiency of the cold storage is improved, an air inlet valve 2 is arranged at the air inlet 11, a fan 3 driven by a motor is arranged at the air outlet 12, the fan 3 is arranged with a mesh cover 31 and a protective shell 32 on the inner and outer sides of the casing 1, the mesh cover 31 and the protective shell 32 can filter ice debris or impurities in the air flow blown out by the cold air machine, and can prevent the fan 3 from being damaged due to impurities, and can also prevent the fan 3 from being deformed and damaged due to external force impact.

[0038] With reference to Figure 2 and Figure 3 , the air inlet valve 2 comprises a first mounting frame 21 and an air deflector 22, in the embodiment, three air deflectors 22 are arranged, the three air deflectors 22 are rotationally arranged in the first mounting frame 21 and are rotated by the same motor, and the rotation axes of the three air deflectors 22 are parallel; a air outlet valve 4 is arranged between the heat exchanger 16 and the air outlet 12, the air outlet valve 4 comprises a second mounting frame 41 and a sealing plate 42 rotationally arranged in the second mounting frame 41, in the embodiment, two sealing plates 42 are arranged, the two sealing plates 42 are driven by the same motor, the rotation axes of the two sealing plates 42 are parallel, and the two sealing plates 42 are arranged as shown in Figure 1 , the two sealing plates 42 are arranged on both sides of the rotation axes of the two sealing plates 42 and are provided with sealing strips 43, the sealing strips 43 can improve the sealing performance of the two sealing plates 42, and further reduce the water vapor leaked through the gaps between the two sealing plates 42.

[0039] The air inlet valve 2 and the air outlet valve 4 are in an open state when the heat exchanger 16 is refrigerating, the air inlet valve 2 and the air outlet valve 4 in the open state can perform air suction and air supply operations of the cold storage, and can ensure the normal air supply volume of the cold air machine, when defrosting operation of the cold air machine is needed, the electric heating wire is started and the air inlet valve 2 and the air outlet valve 4 are closed, the air inlet valve 2 and the air outlet valve 4 can close the area between the two in the casing 1, and can prevent water vapor or residual heat from entering the cold storage through the air inlet 11 or the air outlet 12, thereby reducing the ice formation in the cold storage and the influence of residual heat on the temperature in the cold storage.

[0040] With reference to Figure 2 and Figure 3Both sealing plates 42 are inclined, and the side of the two sealing plates 42 that is close to each other is higher than the side that is far apart from each other. Inclined drainage grooves 14 are fixedly installed inside the casing 1 on the side of the two sealing plates 42 that is far apart from each other. The two drainage grooves 14 are parallel everywhere, and a water storage tank 15 is set below the two drainage grooves 14 in the casing 1. During the defrosting process of the electric heating wire, water vapor will rise and condense into water droplets on the sealing plate 42. The water droplets will slide down along the inclined sealing plate 42 and slide into the drainage groove 14, and finally fall into the water storage tank 15 through the inclined drainage groove 14. This improves the applicability of the air cooler and prevents water droplets from defrosting on the sealing plate 42, which would affect the defrosting effect of the air cooler. An electric heating wire is also set at the bottom of the drainage groove 14 to prevent the water droplets remaining in the drainage groove 14 from freezing and affecting the drainage effect of the drainage groove 14.

[0041] Reference Figure 2 and Figure 3 A drying drawer 5 is inserted between the air outlet 12 and the air outlet valve 4 in the housing 1. The drying drawer 5 is filled with desiccant. The drying drawer 5 is divided into a drawer shell and a curved plate 51 set inside the drawer shell. The desiccant is located on the side of the curved plate 51 away from the air outlet valve 4. An air inlet channel 52 is formed between the curved plate 51 and the side wall of the drawer shell, and a first mesh plate 521 is set at the air inlet channel 52. An air outlet channel 53 is formed between the curved plate 51 and the top of the drawer shell, and a second mesh plate 521 is also set at the air outlet channel 53. The mesh plate 531, the drying drawer 5, and the desiccant can further absorb residual moisture and dry the airflow, improving the applicability of the air cooler. The first mesh plate 521 and the second mesh plate 531 can block the desiccant, which helps prevent powdery or lumpy desiccant from falling out of the curved plate 51. At the same time, they also serve a ventilation function, allowing the air blown out by the heat exchanger 16 to be dried by the desiccant before being blown out by the fan 3. Specifically, the drying method of the airflow by the drying drawer 5 is realized.

[0042] The implementation principle of the air cooler that isolates residual heat and moisture during defrosting according to an embodiment of this application is as follows: When cooling is required, the heat exchanger 16 operates and the fan 3, inlet air valve 2, and outlet air valve 4 are opened. At this time, the fan 3 delivers the cooled air from the air cooler, which has been cooled by the heat exchanger 16, into the cold storage. After 4-8 hours, the electric heating wire is turned on to perform defrosting. At this time, both the inlet air valve 2 and the outlet air valve 4 are closed, and the electric heating wire melts the frost into water droplets and moisture. Water droplets will flow into the water storage tank 15 along the inner wall of the casing 1. Water vapor will rise and condense into water droplets on the side of the sealing plate 42 near the heat exchanger 16, and drip down the inclined sealing plate 42 into the drain trough 14, and finally flow into the water storage tank 15. By blocking water vapor and waste heat through the air inlet valve 2 and the air outlet valve 4, waste heat and water vapor can be prevented from overflowing through the air inlet 11 or the air outlet 12, reducing the impact of waste heat and water vapor on the refrigeration effect inside the cold storage.

[0043] Embodiment 2

[0044] With reference to Figure 4 and Figure 5 The difference between this embodiment and Embodiment 1 is that the water defrosting device 6 is arranged in the cabinet 1 and is located between the air inlet damper 2 and the air outlet damper 4.

[0045] The implementation principle of Embodiment 2 is that the water defrosting device 6 can also remove the frost in the cold air machine without heating, reduce the generation of water vapor, and eliminate the generation of residual heat. When defrosting is performed, the air inlet damper 2 and the air outlet damper 4 can also form a sealed environment to prevent defrosting water from leaking or splashing, and can also reduce the influence of defrosting water on the refrigeration effect in the cold storage.

[0046] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made on the basis of the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An air cooler insulated from frost and water vapor heat, characterized by: The utility model provides a kind of air conditioner, including shell (1), the air inlet (11) and air outlet (12) are opened in the shell (1), the air inlet (11) is provided with air inlet damper (2), the air outlet (12) is provided with fan (3), air outlet damper (4) is arranged in the shell (1), heat exchanger (16) and electric heating wire are arranged between air inlet damper (2) and air outlet damper (4), air outlet damper (4) includes second installation frame (41) and the sealing plate (42) rotationally arranged in second installation frame (41), the sealing plate (42) is provided with multiple, the rotation axis of all the sealing plate (42) is parallel, and all the sealing plate (42) is driven by same motor; All the sealing plate (42) is evenly distributed along the midline of second installation frame (41), any sealing plate (42) is arranged obliquely, and the sealing plate (42) on both sides of the midline of second installation frame (41) is arranged in mutual lap, and sealing strip (43) is arranged on both sides of the rotation axis of any sealing plate (42);Drainage groove (14) is arranged in the shell (1) on the side of second installation frame (41) close to heat exchanger (16), the drainage groove (14) is arranged obliquely, the bottom of the shell (1) is provided with water storage tank (15), and the bottom of the drainage groove (14) is further provided with electric heating wire; The outer side of the shell (1) is covered with heat insulation plate (13); The shell (1) is provided with water defrosting device between air inlet damper (2) and air outlet damper (4).

2. The cold air machine of claim 1, wherein: The air inlet damper (2) includes first installation frame (21) and multiple air deflector plates (22) rotationally arranged in the first installation frame (21), the rotation axis of all the air deflector plates (22) is parallel, and all the air deflector plates (22) are driven by same motor.

3. The cold air machine of claim 1, wherein: The shell (1) is provided with mesh cover (31) and protective shell (32) at air outlet (12), and the mesh cover (31) and protective shell (32) are fixed on both sides of fan (3) by bolts and nuts respectively.

4. The cold air machine of claim 1, wherein: The shell (1) is inserted between air outlet (12) and air outlet damper (4) and is provided with drying drawer (5), and the drying drawer (5) is filled with hygroscopic agent.

5. The cold air machine of claim 4, wherein, The drying drawer (5) includes drawer shell and bent plate (51) arranged in the drawer shell, the hygroscopic agent is arranged on the side of the bent plate (51) away from the air outlet damper (4), and the bent plate (51) and the side wall of the drawer shell form air inlet channel (52), the first mesh plate (521) is arranged at the air inlet channel (52), the bent plate (51) and the top of the drawer shell form air outlet channel (53), and the second mesh plate (531) is arranged at the air outlet channel (53).

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