Automatic humidity control device for fruit and vegetable box of refrigerator

Abstract

The utility model provides an automatic humidity control device for a fruit and vegetable box of a refrigerator, and particularly relates to the technical field of refrigeration equipment. The device is installed in a fruit and vegetable box of a refrigerating chamber of the refrigerator. The automatic humidity control device comprises a shell and a foam base; a double-channel air door is arranged at the joint of the shell and the foam base; an air outlet is formed in the front side wall of the shell; the side, close to the double-channel air door, of the air outlet is provided with a rotatable air port rotating disc, and the side, close to the double-channel air door, of the air port rotating disc is provided with a direct-current fan; a partition plate is arranged in an inner cavity of the foam base and divides the inner cavity of the foam base into a first cavity and a second cavity. The first chamber is communicated with a drain pipe of the evaporator; and the second chamber is communicated with the refrigeration air duct. The fruit and vegetable box is simple in structure and small in occupied space, the size of the air outlet hole is adjusted through the combination of the double-channel air door and the humidity sensor, and control over the space humidity requirement of the fruit and vegetable box is achieved through condensate water generated by the evaporator and cold air dried by the refrigeration air channel.

Description

TECHNICAL FIELD

[0001] The utility model relates to refrigeration equipment technical field, concretely relates to a refrigerator fruit and vegetable box automatic humidity control device. BACKGROUND

[0002] Traditional air-cooled refrigerator, the refrigeration chamber contains the humidification fruit and vegetable box area, this area is generally used for storing vegetables fruits and other things that need to be preserved and stored, prevent the cold wind long blow and cause the problem that the surface of vegetables and fruits loses too much water and is dry and wrinkled. The traditional fruit and vegetable box area often adopts the way of installing a humidification film, which prevents water molecules from overflowing and passively controls water in order to achieve the purpose of high water molecule content in the fruit and vegetable box. However, with the long-term operation of the equipment, the humid surface environment will cause the humidification film to mildew, and then frequent replacement is required; in addition, the humidification performance of the humidification film structure belongs to passive water control, and the water molecule concentration cannot be accurately controlled, and the problem of excessive humidity in the fruit and vegetable box often occurs. CONTENT OF THE UTILITY MODEL

[0003] In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a refrigerator fruit and vegetable box automatic humidity control device, and the specific technical scheme is as follows:

[0004] A refrigerator fruit and vegetable box automatic humidity control device is used for being installed in the fruit and vegetable box of the refrigeration chamber of a refrigerator; the device comprises an automatic humidity control device and a humidity sensor controlled by the control system of the refrigerator; the automatic humidity control device comprises a shell and a foam base located at the rear part of the shell, and the back plate of the foam base is fixed with the back baffle of the refrigeration chamber; the inner cavity of the shell and the inner cavity of the foam base are communicated, and a double-channel air door is arranged at the connection part of the shell and the foam base; an air outlet is arranged on the front side wall of the shell; a rotatable air outlet turntable is arranged on the side of the air outlet close to the double-channel air door, and a DC fan is arranged on the side of the air outlet turntable close to the double-channel air door through a fixing frame; a partition plate is vertically arranged in the inner cavity of the foam base, and the partition plate is perpendicular to the back plate of the foam base and the double-channel air door; the partition plate divides the inner cavity of the foam base into a first chamber and a second chamber; the first chamber is communicated with the drain pipe of the evaporator; and the second chamber is communicated with the refrigeration air duct.

[0005] Preferably, a through hole is arranged on the back plate of the foam base corresponding to the position of the first chamber, and a moisture channel is arranged on the back baffle of the refrigeration chamber corresponding to the position of the through hole; one end of the moisture channel penetrates through the through hole, and the other end is communicated with the drain pipe at the bottom of the evaporator in the refrigeration air duct; a water storage box is arranged in the inner cavity of the first chamber, and the condensed water generated by the evaporator flows into the water storage box through the moisture channel; and heating wires are arranged on the bottom plate of the water storage box.

[0006] Preferably, a cold air channel is arranged on the top of the second chamber, and the second chamber is communicated with the refrigeration air duct through the cold air channel.

[0007] Preferably, the two door body installation positions of the double-channel damper correspond to the first chamber and the second chamber respectively.

[0008] Preferably, the fruit and vegetable box comprises a box body and a cover plate arranged on the top of the box body; a sealing strip is arranged on the contact end face between the box body and the cover plate; and a structure for installing the automatic humidity control device is arranged on the rear side wall of the box body.

[0009] Preferably, a plurality of air outlet holes are arranged on the surface of the air outlet; a plurality of air holes are arranged on the surface of the air outlet turntable at positions corresponding to the plurality of air outlet holes; and the disc shaft of the air outlet turntable is connected with the output shaft of the driving motor.

[0010] Preferably, the humidity sensor is arranged on the inner side wall of the cover plate.

[0011] Further preferably, the cover plate is provided with a return air outlet arranged directly below the inlet of the return air duct of the refrigeration chamber.

[0012] Still further preferably, the humidity sensor, the driving motor, the direct-current fan, the double-channel damper and the heating wire are electrically connected with the control system of the refrigerator.

[0013] Still further preferably, when the humidity sensor detects that the humidity in the fruit and vegetable box is lower than the set humidity, the control system controls the double-channel damper to open the door body corresponding to the first chamber, the heating wire at the bottom of the water storage box is heated to accelerate the evaporation of the condensed water in the water storage box, and at the same time, the direct-current fan is started and the air outlet turntable is rotated to a state in which the plurality of air holes are completely overlapped with the plurality of air outlet holes, and the humidity is blown into the box body of the fruit and vegetable box through the direct-current fan through the air outlet holes for humidification.

[0014] With the increase of the humidity, the control system starts the driving motor to rotate the air outlet turntable to a state in which the plurality of air holes are partially overlapped with the plurality of air outlet holes, so as to reduce the humidification speed; and when the humidity sensor detects that the humidity in the fruit and vegetable box meets the set humidity, the control system controls the double-channel damper to close the door body corresponding to the first chamber and the direct-current fan, and the heating wire stops heating, so as to complete the humidification.

[0015] When the humidity sensor detects that the humidity in the fruit and vegetable box is higher than the set humidity, the control system controls the double-channel damper to open the door body corresponding to the second chamber and keeps the door body on the side of the first chamber closed, and at the same time, the direct-current fan is started, the air outlet turntable is rotated according to the current humidity condition, the dehumidification speed is controlled by adjusting the overlapping size of the air holes and the air outlet holes, and then the dry cold air in the refrigeration air duct is blown into the box body of the fruit and vegetable box for dehumidification.

[0016] The fruit and vegetable box has the following beneficial effects:

[0017] 1. The utility model discloses simple structure, small space occupation, through the double -channel air door combination humidity sensor, the size of the air outlet, utilize the condensate of evaporator and the dry cool air in the refrigeration air duct realizes the accurate control to the fruit and vegetable box space humidity demand;

[0018] 2. Compared with traditional passive control wet moisturizing film structure, the utility model can realize the automatic control of two conditions of humidification or dehumidification, and there is no problem of too large or too small humidity;

[0019] 3. Without frequently replacing the easy -to -break parts such as moisturizing film, save the cost. DRAWINGS

[0020] The drawings constituting the utility model disclose the further understanding of the application and do not constitute the improper limitation of the application.

[0021] Figure 1 It is the installation position diagram of the utility model in the refrigerator refrigeration chamber;

[0022] Figure 2 It is Figure 1 The explosion map of the fruit and vegetable box and the automatic humidity control device;

[0023] Figure 3 It is the structural schematic diagram of the automatic humidity control device;

[0024] Figure 4 It is the working schematic diagram of the double -channel air door in the humidification state of the automatic humidity control device;

[0025] Figure 5 It is the working schematic diagram of the double -channel air door in the dehumidification state of the automatic humidity control device;

[0026] In the drawing, 1-fruit and vegetable box;101-box body;102-sealing strip;103-cover plate;104-return air inlet;105-humidity sensor;2-automatic humidity control device;201-outer shell;2011-air outlet;202-air port turntable;203-fixed frame;2031-DC fan;204-double -channel air door;205-water storage box;206-foam base;207-cold air passage;208-moisture passage;2081-Through -hole;3-refrigeration chamber;301-leeward board;4-refrigeration air duct;401-evaporator;402-drain pipe. DETAILED DESCRIPTION

[0027] The specific implementation of the automatic humidity control device for the refrigerator fruit and vegetable box provided by the utility model is further explained in combination with the drawings and examples.

[0028] For example Figures 1-2As shown, an automatic humidity control device for a refrigerator fruit and vegetable drawer is installed at the rear of the inner cavity of the fruit and vegetable drawer 1 in the refrigerator compartment; the automatic humidity control device 2 includes an outer shell 201 and a foam base 206 located at the rear of the outer shell 201, and the automatic humidity control device 2 is fixed to the back panel 301 of the refrigerator compartment 3 through the back panel of the foam base 206.

[0029] Preferably, the inner cavity of the outer shell 201 and the inner cavity of the foam base 206 are connected, and a double-channel damper 204 is provided at the connection between the outer shell 201 and the foam base 206. A partition is vertically arranged in the inner cavity of the foam base 206, perpendicular to both the back plate of the foam base and the double-channel damper 204, thus dividing the inner cavity of the foam base 206 into a first chamber and a second chamber. It is worth noting that the two door positions of the double-channel damper 204 correspond to the front ends of the first and second chambers, respectively. The first chamber is connected to the drain pipe 402 at the lower end of the evaporator 401 for discharging condensate; the second chamber is connected to the refrigerated air duct 4.

[0030] Preferably, the front sidewall of the outer casing 201 is provided with an air outlet 2011, and the surface of the air outlet 2011 is provided with a plurality of air outlet holes; an air outlet turntable 202 is provided on the side of the air outlet 2011 near the dual-channel damper 204, and the disc shaft of the air outlet turntable 202 is connected to the output shaft of the drive motor, thereby controlling the rotation of the air outlet turntable 202 by controlling the drive motor.

[0031] Preferably, the surface of the air outlet turntable 202 is provided with a plurality of air holes corresponding to the positions of a plurality of air outlet holes. The size of the air holes is adapted to the size of the air outlet holes. By controlling the drive motor to rotate the air outlet turntable 202, the overlap size of the air holes and the air outlet holes can be adjusted, thereby realizing the control of the humidification or dehumidification speed.

[0032] Preferably, a DC fan 2031 is installed on the side of the air vent turntable 202 near the dual-channel air damper 204 via a fixing frame 203, which can draw dry cold air or humid air into the inner cavity of the fruit and vegetable box 1.

[0033] like Figure 3 As shown, the back plate of the foam base 206 has a through hole 2081 corresponding to the position of the first chamber, and the back panel 301 of the refrigerator compartment 3 has a moisture channel 208 corresponding to the position of the through hole 2081. One end of the moisture channel 208 passes through the through hole 2081, and the other end is connected to the drain pipe 402 at the bottom of the evaporator 401 in the refrigerator air duct 4. A water storage box 205 is also provided at the bottom of the first chamber. The condensate produced by the evaporator 401 flows into the water storage box 205 below through the moisture channel 208. In order to accelerate the evaporation of the condensate and increase the humidity, the bottom plate of the water storage box 205 is provided with a heating wire.

[0034] Preferably, a cold air channel 207 is provided at the top of the second chamber, and the second chamber is connected to the refrigerated air duct 4 through the cold air channel 207.

[0035] Preferably, the fruit and vegetable box 1 includes a box body 101 and a cover plate 103 disposed on the top of the box body 101; a sealing strip 102 is provided on the contact end face between the box body 101 and the cover plate 103; and a structural clearance is provided on the rear wall of the box body 101 for the installation of an automatic humidity control device 2.

[0036] More preferably, a humidity sensor 105 is provided on the inner wall of the cover 103 of the fruit and vegetable box 1 for real-time monitoring of the humidity data inside the fruit and vegetable box 1. The cover 103 is also provided with a return air vent 104, which is located directly below the inlet of the return air duct of the refrigerator compartment 3.

[0037] It is worth noting that the humidity sensor 105, drive motor, DC fan 2031, dual-channel damper 204, and heating wire on the bottom plate of water storage box 205 are all controlled by the refrigerator's control system, thereby achieving automatic humidity control.

[0038] When in use, when the humidity sensor 105 detects that the humidity inside the fruit and vegetable box 1 is lower than the set humidity, the refrigerator's control system controls the dual-channel damper 204 to open the door on one side of the first chamber. The heating wire at the bottom of the water storage box 205 starts to heat up, accelerating the evaporation of condensate in the water storage box 205 and increasing the humidity. At the same time, the DC fan 2031 is turned on, and the air outlet turntable 202 rotates to a state where several air holes and several air outlets are completely aligned. Moisture is blown into the box body 101 of the fruit and vegetable box 1 through the air outlets by the DC fan 2031 for humidification.

[0039] As humidity rises, the refrigerator control system activates the drive motor, causing the air vent turntable 202 to rotate until some air holes and some air outlets partially overlap, reducing the humidification speed. Until the humidity sensor 105 detects that the humidity inside the fruit and vegetable drawer 1 meets the set humidity level, the control system controls the dual-channel damper 204 to close the door on one side of the first chamber and the DC fan 2031, stopping the heating element and completing the humidification process for the fruit and vegetable drawer 1. Figure 4 As shown;

[0040] When the humidity sensor 105 detects that the humidity inside the fruit and vegetable drawer 1 is higher than the set humidity, the refrigerator control system controls the dual-channel damper 204 to open the door on the side corresponding to the second chamber while keeping the door on the side corresponding to the first chamber closed. Simultaneously, the DC fan 2031 is turned on, and the air vent turntable 202 rotates according to the current humidity level. The dehumidification speed is controlled by adjusting the overlap size of the air vents and the air outlet, thereby blowing dry, cold air from the refrigeration air duct 4 into the drawer body 101 of the fruit and vegetable drawer 1 for dehumidification. Figure 5As shown. Once the humidity sensor 105 detects that the humidity inside the fruit and vegetable box 1 meets the set humidity, one side door of the second chamber and the DC fan 2031 are closed, thus achieving the effect of automatic humidity control.

[0041] This invention features a simple structure and small footprint, eliminating the need for frequent replacement of easily damaged components such as the moisturizing film, thus saving costs. Compared to traditional passive humidity control and moisturizing film structures, this invention utilizes a dual-channel damper combined with a humidity sensor and adjusted air outlet size to precisely control the humidity requirements of the fruit and vegetable box space by using condensate generated by the evaporator and dry cold air in the refrigeration duct, avoiding excessive or insufficient humidity.

[0042] In this utility model, terms such as "upper," "lower," "bottom," and "top" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are merely used to facilitate the description of the structural relationships of the various components or elements of this utility model and do not specifically refer to any part or element of this utility model; they should not be construed as limiting this utility model. Terms such as "connected" and "linked" should be interpreted broadly, indicating a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be determined according to the specific circumstances, and they should not be construed as limiting this utility model.

[0043] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. An automatic humidity control device for a refrigerator's fruit and vegetable drawer, for installation inside the fruit and vegetable drawer of a refrigerator's freezer compartment; characterized in that, This includes automatic humidity control devices and humidity sensors controlled by the refrigerator's control system; The automatic humidity control device includes an outer shell and a foam base located at the rear of the outer shell. The back panel of the foam base is fixed to the ventilated panel of the refrigerator compartment. The inner cavity of the outer shell and the inner cavity of the foam base are connected, and a double-channel damper is provided at the connection between the outer shell and the foam base. An air outlet is provided on the front side wall of the outer casing; a rotatable air outlet turntable is provided on the side of the air outlet near the dual-channel air damper, and a DC fan is mounted on the side of the air outlet turntable near the dual-channel air damper via a fixing frame. The inner cavity of the foam base is vertically equipped with a partition, which is perpendicular to the back plate of the foam base and the dual-channel air damper. The partition divides the inner cavity of the foam base into a first chamber and a second chamber. The first chamber is connected to the drain pipe of the evaporator. The second chamber is connected to the refrigeration air duct.

2. The automatic humidity control device for the refrigerator fruit and vegetable drawer according to claim 1, characterized in that, The foam base back plate has a through hole corresponding to the position of the first chamber, and the refrigeration compartment back plate has a moisture channel corresponding to the position of the through hole; one end of the moisture channel passes through the through hole, and the other end is connected to the drain pipe at the bottom of the evaporator in the refrigeration air duct. The first chamber is equipped with a water storage box, and the condensate produced by the evaporator flows into the water storage box through the moisture channel; the bottom plate of the water storage box is equipped with a heating wire.

3. The automatic humidity control device for the refrigerator fruit and vegetable drawer according to claim 2, characterized in that, The top of the second chamber is provided with a cold air channel, and the second chamber is connected to the refrigeration air duct through the cold air channel.

4. The automatic humidity control device for the refrigerator fruit and vegetable drawer according to claim 1, characterized in that, The two door bodies of the dual-channel damper are installed in positions corresponding to the first chamber and the second chamber, respectively.

5. The automatic humidity control device for the refrigerator fruit and vegetable drawer according to claim 3, characterized in that, The fruit and vegetable box includes a box body and a cover plate disposed on the top of the box body; a sealing strip is provided on the contact end face between the box body and the cover plate; The rear side wall of the box is provided with a structural clearance for the installation of an automatic humidity control device.

6. The automatic humidity control device for the refrigerator fruit and vegetable drawer according to claim 5, characterized in that, The surface of the air outlet is provided with a plurality of air outlet holes; the surface of the air outlet turntable is provided with a plurality of air holes corresponding to the positions of the plurality of air outlet holes; The shaft of the air vent turntable is connected to the output shaft of the drive motor.

7. The automatic humidity control device for the refrigerator fruit and vegetable drawer according to claim 6, characterized in that, The humidity sensor is mounted on the inner wall of the cover plate.

8. The automatic humidity control device for the refrigerator fruit and vegetable drawer according to claim 5, characterized in that, The cover plate is provided with a return air vent, which is located directly below the inlet of the return air duct of the refrigerator compartment.

9. The automatic humidity control device for the refrigerator fruit and vegetable drawer according to claim 7, characterized in that, The humidity sensor, drive motor, DC fan, dual-channel damper, and heating wire are all electrically connected to the refrigerator's control system.

10. The automatic humidity control device for the refrigerator fruit and vegetable drawer according to claim 9, characterized in that, When the humidity sensor detects that the humidity inside the fruit and vegetable box is lower than the set humidity, the control system controls the dual-channel damper to open the door on one side of the first chamber. The heating wire at the bottom of the water storage box heats up to accelerate the evaporation of condensate in the water storage box. At the same time, the DC fan is turned on, and the air outlet turntable rotates to a state where several air holes and several air outlets are completely aligned. Moisture is blown into the fruit and vegetable box through the DC fan and air outlets for humidification. As humidity rises, the control system starts the drive motor, causing the air vent turntable to rotate until some air holes and some air outlets partially overlap, reducing the humidification speed; until the humidity sensor detects that the humidity in the fruit and vegetable box meets the set humidity, the control system controls the dual-channel air damper to close the door on one side of the first chamber and the DC fan, and the heating wire stops heating, completing the humidification process; When the humidity sensor detects that the humidity inside the fruit and vegetable box is higher than the set humidity, the control system controls the dual-channel damper to open the door on the side corresponding to the second chamber while keeping the door on the side corresponding to the first chamber closed. At the same time, the DC fan is turned on, and the air outlet turntable rotates according to the current humidity. The dehumidification speed is controlled by adjusting the overlap size of the air hole and the air outlet, thereby blowing the dry cold air in the refrigeration air duct into the fruit and vegetable box for dehumidification.

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