CN207113356U - A kind of wind cooling refrigerator - Google Patents

Abstract

The utility model discloses an air-cooled refrigerator, the box body of which includes an outer shell and an inner container, the inner container is arranged inside the outer shell, and an insulating layer is filled between the inner container and the outer shell, and the inner container is sequentially provided with a refrigerating chamber from top to bottom , Changing greenhouse and freezer. The heat insulation layer is provided with a cold air chamber for placing the evaporator and the blower inside the rear side of the freezing chamber. The cold air cavity communicates with the freezing chamber through the first air supply duct, and the first air supply duct is located on the air outlet on the inner wall of the freezing chamber, and is equipped with a freezing damper. The cold air chamber communicates with the temperature-changing chamber through the second air-supply duct, and the second air-supply duct is located on the air outlet on the inner wall of the variable-temperature chamber, and is equipped with a temperature-variable damper. The cold air chamber communicates with the refrigerator compartment through the third air supply duct, and the third air supply duct is located on the air outlet on the wall of the refrigerator compartment, and is equipped with a refrigeration damper. The utility model has the advantages of reasonable structure, precise humidity control and strong practicability, keeps the internal moisture conservation of the air-cooled refrigerator, discharges water vapor from the freezing chamber in time, and effectively prevents frosting.

Description

an air-cooled refrigerator

technical field

The utility model relates to the technical field of household appliances, in particular to an air-cooled refrigerator.

Background technique

The refrigerating room, variable temperature room and freezing room of the existing air-cooled refrigerator generally use circulating air to pass through the evaporator to lower the temperature, and then the fan sends the cold air to the refrigerating room for cooling. Although this forced cooling method has a fast cooling speed, each The advantages of uniform temperature, but because the circulating air needs to pass through the evaporator for heat exchange and cooling, the water contained in it is analyzed and condensed on the evaporator, so that the air humidity in the refrigerator is low, and the food stored in the refrigerator is air-dried , so that food loses moisture. The cooling method of the air-cooled refrigerator refrigerator is to blow cold air into the refrigerator through the work of the air duct, damper, and damper to achieve the purpose of cooling. Disadvantages of vegetables, fruits and other items in the refrigerator.

For the problem that the food in the cold room of the air-cooled refrigerator and the temperature-changing room are easy to dry, the following two solutions are usually adopted: Option 1, use a humidifier to produce water mist and transmit it to the cold room through a fan to achieve the effect of humidification, and use a humidifier The humidifier and additional fan increase the energy consumption of the whole machine. Moreover, the humidifier produces water mist quickly, which may easily cause excessive humidification, and the humidity in the refrigerator room is too high. After the water mist condenses, it will form a large amount of water and cannot dissipate by itself. Solution 2: use the water collection device to collect the defrosting water of the evaporator, and achieve the purpose of humidification through natural evaporation of the defrosting water, but the humidification efficiency is too low through the natural evaporation method, the humidification effect is not obvious, and it cannot meet the expected humidification and preservation Effect.

Utility model content

In view of the defects in the above-mentioned prior art, the purpose of this utility model is to provide an air-cooled refrigerator, in order to solve the problem that the food in the refrigerating room and variable room of the existing air-cooled refrigerator is easy to dry, and to cause humidification through natural evaporation. The efficiency is too low and the humidification effect is not obvious.

The utility model is in order to realize above-mentioned object, and the technical solution that adopts is:

An air-cooled refrigerator has a box body, the box body includes an outer shell and an inner container, the inner container is arranged inside the outer shell, and an insulating layer is filled between the inner container and the outer shell, and the inner container is sequentially provided with refrigerators from top to bottom. room, variable room and freezer. The thermal insulation layer is provided with a cold air chamber for placing an evaporator and a fan inside the rear side of the freezing chamber. The cold air cavity communicates with the freezing chamber through the first air supply duct, and the first air supply duct is located on the air outlet on the inner wall of the freezing chamber, and is equipped with a freezing damper. The cold air chamber communicates with the variable room through the second air supply channel, and the second air supply channel is located on the air outlet on the inner wall of the variable room, and is equipped with a variable temperature damper. The cold air cavity communicates with the refrigerator compartment through the third air supply duct, and the third air supply duct is located on the air outlet on the wall of the refrigerator compartment, and is equipped with a refrigeration damper.

Preferably, between the freezing chamber and the cold air chamber, a refrigerated return air passage for returning air from the freezing chamber to the cold air chamber is provided. Between the temperature-changing room and the cold-air chamber, there is also a temperature-variable return air passage for returning air from the variable-temperature room to the cold-air chamber. Between the refrigerating chamber and the cold air chamber, a refrigerating return air duct for returning air from the refrigerating chamber to the cold air chamber is also arranged.

Preferably, the first air supply channel, the second air supply channel and the third air supply channel are all buried inside the insulation layer. The freezing return air duct, variable temperature return air duct and refrigerated return air duct are also all buried inside the insulation layer.

Preferably, a single-chip controller is provided inside the box, and the single-chip controller is electrically connected to the freezing damper, the variable temperature damper and the refrigerating damper respectively to control the opening and closing of each damper.

Preferably, the box body is located inside the rear side of the freezing chamber and has a compressor chamber for placing a compressor, and the compressor is connected to the evaporator through a pipeline. The evaporator is equipped with an electric heater, and the electric heater is controlled by a single-chip microcomputer controller.

Preferably, a refrigerating door, a temperature-changing door and a freezing door are sequentially arranged on the front side of the box from top to bottom.

The working principle of the utility model humidifying and keeping fresh is as follows: when the evaporator of the air-cooled refrigerator is working, the freezing damper, the temperature-changing damper and the refrigerating damper are all opened, and the fan blows cold air into the cold room, the variable temperature room and the freezing room. When the evaporator stops working, the temperature-variable damper and the refrigerating damper remain open, and the freezing damper closes. The electric heater is turned on to heat and defrost the evaporator and form water vapor in the cold air cavity. The fan blows water vapor through the second air supply duct and the third air supply duct, and respectively blows the water vapor into the temperature-changing room and the cold storage room, so as to realize the purpose of humidification.

By adopting the above-mentioned technical scheme, the beneficial technical effects of the utility model are: the utility model heats the water vapor generated by its evaporator, and the fan sends the water vapor into the refrigerator room and the temperature-changing room respectively through an independent air channel, avoiding placing the water vapor in the refrigerator room. Dry the food in the room and variable temperature room. The single-chip controller controls the opening and closing time of the variable temperature air door and the refrigeration air door and the size of the opening, so that the humidity of the refrigerator room and the variable temperature room can be accurately controlled within a reasonable range, so that the food inside can achieve the best fresh-keeping effect. Simultaneously, the single-chip controller also controls the switch of the freezing air door to prevent water vapor from entering the freezing chamber and discharge the water vapor in the freezing chamber to avoid frosting inside the freezing chamber. The utility model has reasonable structural design, precise humidity control, and strong practicability. Without adding external water sources, the utility model can keep the internal moisture conservation of the air-cooled refrigerator, discharge water vapor from the freezing chamber in time, and effectively prevent frosting.

Description of drawings

Fig. 1 is a schematic structural diagram of an air-cooled refrigerator of the present invention.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in detail:

Embodiment, with reference to Fig. 1, a kind of air-cooled refrigerator, this air-cooled refrigerator has box body 1, and described box body 1 comprises shell 2 and liner 10, and its liner 10 is made of hard plastic or metal shell-shaped Box structure, the liner 10 is provided with a refrigerating room 11, a temperature-changing room 12 and a freezing room 13 from top to bottom in sequence, between the inner wall of the outer shell 2 and the outer wall of the inner liner 10, filled with a thermal insulation layer 3 with heat preservation function , the insulation layer 3 is made of foaming material. The front side of the box body 1 is sequentially provided with a refrigerating door body 21, a temperature-changing door body 22 and a freezing door body 23 from top to bottom. One side is hinged, and corresponds to the refrigerating chamber 11, the temperature-changing chamber 12 and the freezing chamber 13 respectively, and realizes the opening and closing of the above-mentioned chambers. The insulation layer 3 is located inside the rear part of the freezer compartment 13 and has a cold air cavity 14 for placing the evaporator 4 and the fan 5 . The fan 5 is fixedly installed inside the cold air chamber 14 , and the cold air chamber 14 is divided into a high-pressure zone 141 and a low-pressure zone 142 , and the evaporator 4 is installed in the low-pressure zone 142 on one side of the fan 5 . The blower 5 sends air from the low-pressure zone 142 to the high-pressure zone 141 when it is in operation.

The high-pressure area 141 on one side of the cold air chamber 14 communicates with the freezing chamber 13 through the first air supply duct 31 . The first air supply duct 31 is located inside the insulation layer 3 , one end of the first air supply duct 31 communicates with the cold air cavity 14 , and the other end communicates with the freezing chamber 13 . The first air supply duct 31 is located on the air outlet on the inner wall of the freezing chamber 13 and is equipped with a freezing damper 51 which can be opened or closed. Between the freezer chamber 13 and the cold air chamber 14, a refrigerated return air duct 34 for returning air from the freezer chamber 13 to the cold air chamber 14 is provided. When the freezing air door 51 is in the open state, the cold air in the high-pressure area 141 can enter the freezing chamber 13 through the first air supply duct 31, and the cold air in the freezing chamber 13 is returned to the cold air chamber 14 by the freezing return air duct 34. Circulating cold air is formed inside the freezer compartment 13 to freeze the food in the freezer compartment 13 .

The high-pressure area 141 on one side of the cold air cavity 14 communicates with the variable temperature chamber 12 through the second air supply duct 32 . The second air supply duct 32 is located inside the thermal insulation layer 3 , one end of the second air supply duct 32 communicates with the cold air cavity 14 , and the other end communicates with the variable chamber 12 . The first air supply duct 31 is located on the air outlet of the inner wall of the temperature-changing chamber 12, and is equipped with a temperature-variable damper 52, which can be opened or closed. Between the variable temperature room 12 and the cold air chamber 14, there is also a variable temperature return air duct 35 for returning air from the variable temperature room 12 to the cold air cavity 14. The variable temperature room 12 and the cold air cavity 14 form an annular circulation channel through the second air supply channel 32 and the variable temperature return air channel 35, so that the inside of the variable temperature room 12 is formed to circulate cold air.

The high-pressure area 141 on one side of the cold air chamber 14 communicates with the refrigerating chamber 11 through the third air supply duct 33 . The third air supply duct 33 is located inside the insulation layer 3 , one end of the third air supply duct 33 communicates with the cold air chamber 14 , and the other end communicates with the refrigerating chamber 11 . The third air supply duct 33 is located on the air outlet of the inner wall of the refrigerating chamber 12 and is equipped with a refrigerating damper 53 which can be opened or closed. Between the refrigerating room 11 and the cold air chamber 14, a refrigerating return air duct 36 for returning air from the refrigerating room 12 to the cold air chamber 14 is provided. The refrigerating chamber 11 and the cold air cavity 14 form an annular circulation channel through the third air supply duct 33 and the refrigerating return air duct 36 , so as to realize the circulation of cold air inside the refrigerating chamber 11 . The freezing return air duct 34 , the variable temperature return air duct 35 and the refrigerating return air duct 36 are also all buried in the inside of the insulation layer 3 .

Described box body 1 is positioned at the inside of freezer compartment 13 rear side, has the compressor cavity 61 that places compressor 6, and compressor cavity 61 is the cavity structure between casing 2 and insulation layer outer side 3, and compressor 6 passes tube The road is connected to the evaporator 4 and the condenser 7 in turn to form a closed-cycle refrigeration system. The evaporator 4 is equipped with an electric heater 8, and the electric heater 8 can heat the ice or frost condensed on the surface of the evaporator 4 to form water vapor when the electric heater 8 is powered on. The electric heater 8 is controlled by a single-chip controller 9, which is installed inside the compressor cavity 61 of the casing 1, and the single-chip controller 9 is electrically connected with the freezing damper 51, the variable temperature damper 52 and the refrigeration damper 53 respectively, Control the opening and closing time of each damper, and by controlling the degree of opening of each damper, the control of the air supply volume of the refrigerating chamber 11, the variable chamber 12 and the freezing chamber 13 is achieved.

The utility model discloses an air-cooled refrigerator, the working principle of which includes a refrigeration process and a humidification process. When the air-cooled refrigerator is in the cooling state, the compressor 6 arranged at the rear of the casing 1 starts, and the single-chip controller 9 controls the freezing damper 51, the temperature-variable damper 52 and the refrigerating damper 53 to open. The single-chip controller 9 controls the fan 5 to start, and the fan 6 sends the cold air around the evaporator 4 to the high-pressure area 141 on the other side of the cold air chamber 14 from the low-pressure area 142 on one side of the cold air chamber 14, and passes the cold air through the first air supply. Road 31, the second air supply duct 32 and the third air supply duct 33 are blown into the freezer compartment 13, the variable compartment 12 and the refrigerator compartment 11 respectively. Simultaneously, the air in the freezing chamber 13 flows back to the low-pressure zone 142 of the cold air chamber 14 through the freezing return air duct 34, and the air in the temperature-changing chamber 12 returns to the low-pressure zone 142 of the cold air chamber 14 through the temperature-variable return air duct 35. The air in 11 returns to the low-pressure area 142 of the cold air chamber 14 through the refrigerated return air duct 36 . Between the cold air chamber 14 and the freezing chamber 13, the temperature-changing chamber 12 and the refrigerating chamber 11 respectively, three closed circulation loops are formed to realize the refrigeration of the freezing chamber 13, the changing chamber 12 and the refrigerating chamber 11.

After the cooling process, the air-cooled refrigerator enters the humidification process. After the compressor 6 stopped working, the single-chip controller 9 controlled the freezing damper 51 to close, and the temperature-variable damper 52 and the refrigerating damper 53 were opened. When the evaporator 4 stops working, the variable temperature damper and the refrigerating damper remain open, and the freezing damper closes. The electric heater 8 controlled by the single-chip controller 9 is turned on to heat and defrost the outer surface of the evaporator 4 and form water vapor in the low-pressure area 142 of the cold air cavity 14 . The blower fan 5 starts, and the water vapor in the cold air cavity 14 is blown into the inside of the variable temperature chamber 12 and the refrigerating chamber 11 through the second air supply duct 32 and the third air supply duct 33 respectively. The air in the variable room 12 flows back to the low-pressure area 142 of the cold air chamber 14 through the temperature-variable return air duct 35 , and the air in the refrigerator compartment 11 returns to the low-pressure area 142 of the cold air chamber 14 through the refrigeration return air duct 36 . Simultaneously, a small amount of water vapor that evaporates naturally in the freezer compartment 13 is blown into the temperature-changing room 12 or the refrigerating room 11 by the blower fan 5 to prevent freezing in the inside of the freezing room 13, realize the humidification purpose in the changing room 12 and the refrigerating room 11, and keep The food stored in the temperature-changing room 12 and the refrigerating room 11 is fresh.

The utility model sends the water vapor generated by the heating of the evaporator, and the fan sends the water vapor into the refrigerator and the temperature-changing chamber respectively through independent air passages, so as to avoid the food placed in the refrigerator and the temperature-changing chamber from being air-dried. The single-chip controller controls the opening and closing time of the variable temperature air door and the refrigeration air door and the size of the opening, so that the humidity of the refrigerator room and the variable temperature room can be accurately controlled within a reasonable range, so that the food inside can achieve the best fresh-keeping effect. Simultaneously, the single-chip controller also controls the switch of the freezing air door to prevent water vapor from entering the freezing chamber and discharge the water vapor in the freezing chamber to avoid frosting inside the freezing chamber. The utility model has reasonable structural design, precise humidity control, and strong practicability. Without adding external water sources, the utility model can keep the internal moisture conservation of the air-cooled refrigerator, discharge water vapor from the freezing chamber in time, and effectively prevent frosting.

Of course, the above description is not a limitation of the present utility model, and the present utility model is not limited to the above-mentioned examples, and changes, modifications, additions or replacements made by those skilled in the art within the essential scope of the present utility model are also acceptable. Should belong to the protection scope of the present utility model.

Claims (6)

1. An air-cooled refrigerator has a casing, and the casing includes a shell and a liner, wherein the liner is arranged in the inside of the shell, and an insulating layer is filled between it and the shell, and the liner consists of an upper A refrigerator room, a temperature-changing room and a freezer room are sequentially arranged on the bottom; the insulation layer is provided with a cold air chamber for placing an evaporator and a fan inside the rear side of the freezer chamber; the cold air chamber passes through the first air supply duct and The freezing room communicates with each other, and the first air supply channel is located on the air outlet on the inner wall of the freezing room, and is equipped with a freezing damper; the cold air chamber communicates with the variable room through the second air supply channel, and the second air supply channel is located at the outlet of the inner wall of the variable room. A variable temperature damper is arranged on the tuyere; the cold air chamber communicates with the refrigerating chamber through the third air supply duct, and the third air supply duct is located on the air outlet on the wall of the refrigerating chamber, and is equipped with a refrigerating damper. 2. A kind of air-cooled refrigerator according to claim 1, characterized in that, between the freezer chamber and the cold air chamber, there is also a refrigerated return air duct for returning air from the freezer chamber to the cold air chamber; Between the cold air chamber, there is also a variable temperature return air duct for returning air from the variable room to the cold air chamber; between the refrigerator compartment and the cold air chamber, there is also a refrigerating return air duct for returning air from the refrigerator to the cold air chamber. 3. A kind of air-cooled refrigerator according to claim 1, characterized in that, the first air supply duct, the second air supply duct and the third air supply duct are all buried in the insulation layer ; The refrigerated return air duct, variable temperature return air duct and refrigerated return air duct are also all buried in the inside of the insulation layer. 4. A kind of air-cooled refrigerator according to claim 1, characterized in that, the inside of the box is provided with a single-chip controller, and the single-chip controller is electrically connected to the freezing damper, the temperature-variable damper and the refrigeration damper respectively to control each damper opening and closing. 5. An air-cooled refrigerator according to claim 1, wherein the box body is located inside the rear side of the freezer compartment and has a compressor cavity for placing a compressor, and the compressor is connected to the evaporator through a pipeline; The evaporator is equipped with an electric heater, and the electric heater is controlled by a single-chip microcomputer controller. 6 . The air-cooled refrigerator according to claim 1 , wherein a refrigerating door, a variable temperature door, and a freezing door are sequentially arranged on the front side of the box from top to bottom. 7 .