KR102181212B1 - Apparatus to control the air pressure of freezer - Google Patents

Abstract

The present invention relates to an air pressure adjustment device for a freezer, and more particularly, it is installed on the wall of a freezer to balance the air pressure inside and outside the freezer when the door is opened and closed, so that the user can more easily open and close the freezer door, and the product It is invented to simplify the configuration and improve the convenience of manufacturing and assembly work.
The configuration of the present invention, in one direction of the wall (2) in which the mounting hole (3) is formed so that the inside and the outside of the freezer (1) communicate with each other, the inner flange (11) and the inner body are intercepted by being inserted into the mounting hole (3). An inner housing 10 having (12);
An outer housing (20) having an outer body (22) and an outer flange (21) into which the inner body (12) of the inner flange (11) is inserted by being inserted into the mounting hole (3) from the other side of the wall (2) ;
It is inserted into the assembly space 13 of the inner body 12 in one direction of the inner housing 10, and an air passage 32 is formed in the longitudinal direction in the center, and the inner wall surface of the air passage 32 An air pressure adjustment valve having a hinge hole 33 in the assembly space 13 with support plates 31 formed on both sides of the assembly space 13 and a square-shaped heating element fixing surface 34 formed between the support plates 31 (30) and;
A moving path shielding plate 40 for opening and closing the air moving path 32 by inserting a hinge shaft 41 rotatably into the hinge hole 33 of the air pressure adjusting valve 30;
It is installed along the periphery of the outer diameter of the air pressure adjustment valve 30, is configured to include a heat transfer member 50 that generates heat according to power supply.
In addition, a packing member 61 and a cover member 60 are further mounted to the inner flange 11 of the inner housing 10 and the outer flange 21 of the outer housing 20, while the screw member 62 is It is achieved by fastening the cover member 60 and the inner and outer flanges 11 and 21 to the wall 2.
In addition, at the corners between the heating element fixing surfaces 34 of the pressure adjustment valve 30, a heating wire fixing part 35 in which a heating wire guide groove 35a is continuously formed at intervals in the length direction is further formed, and the heat transfer member 50 ) Is a planar heating element 51 or a heating coil 52 can be used in combination or, and the heating element fixing surface 34 of the air pressure adjusting valve 30 has a planar heating element 51 mounted, and the heating wire coil 52 ) Is achieved by configuring to be installed along the circumference of the heating element fixing surface 34 of the air pressure adjustment valve 30.

Description

Air pressure regulator for freezer{Apparatus to control the air pressure of freezer}

The present invention relates to an air pressure adjustment device for a freezer, and more particularly, it is installed on the wall of a freezer to balance the air pressure inside and outside the freezer when the door is opened and closed, so that the user can more easily open and close the freezer door, and the product It is invented to simplify the configuration and improve the convenience of manufacturing and assembly work.

In general, a refrigerator is a device that keeps food fresh for a certain period of time by repetition of the refrigerant compression-condensation-expansion-evaporation cycle, thereby lowering the inside of the refrigerator.

Such a refrigerator includes a compressor that raises and increases the temperature of a gas refrigerant in a low temperature and low pressure state to a high temperature and high pressure gas state, and a liquid refrigerant of a low temperature by cooling and condensing the high temperature and high pressure gaseous refrigerant introduced from the compressor by external air. A condenser that converts to, a capillary tube for decompressing the refrigerant flowing from the condenser because the diameter is narrower than the diameter of other parts, and the refrigerant that has passed through the capillary tube is evaporated from a low pressure state to a low temperature, thereby reducing heat in the chamber. The refrigeration cycle is formed with the absorbing evaporator as the basic system.

Unlike general refrigerators as described above, freezers are devices that provide cryogenic temperatures to store foods or other items at a low temperature. They are stored at temperatures of about ??70°C or less to prevent deterioration of foods or items.

Explaining an example of such a freezer, the freezer generally has a cooling device installed at the bottom, a freezer compartment is provided above the cooling device, and a storage box is accommodated in the freezer according to the type of article or food to be stored. , A door provided with a control unit is mounted on the front of the freezer.

On the other hand, since the freezer is basically configured to lower the temperature by using electricity, if the cooling system does not work due to an unexpected power outage or a breakdown of the freezer itself, the temperature inside the freezer is likely to rise under the influence of room temperature. In preparation for this, a refrigeration backup device is prepared, and the backup device mostly uses liquid carbon dioxide or liquid nitrogen to inject these liquids into the freezer, thereby reducing the temperature inside the freezer by absorbing latent heat as these liquids evaporate. Will be ordered.

However, most of the freezers do not have a separate means for properly maintaining the air pressure in the freezer, making it inconvenient to use the freezer, and in some cases, problems such as injury to the user or failure of the freezer occurred.

When the freezer is operating normally, since the inside of the freezer is in a cryogenic state, the air inside the freezer is contracted, and the air pressure inside the freezer is lower than the atmospheric pressure and negative pressure is applied.

When the user opens the freezer door under such a negative pressure, the door does not open easily, and the door is opened with an unreasonable force, which is not only uncomfortable for the user, but also creates an excessive force on the door handle or hinge, and the door opens at a time, causing the user to be injured. Concerns arose.

On the contrary, when the refrigeration backup function is operated, liquid carbon dioxide or liquid nitrogen vaporizes and the air pressure inside the freezer rises to become a high pressure state, and in severe cases, there is a risk that the door may fall off due to explosion.

In other words, if the air pressure inside the freezer falls compared to the air pressure outside the freezer, the freezer entrance door is sucked into the inside of the freezer, making it difficult to open and close.If the freezer internal air pressure rises excessively, the freezer body expands and changes due to atmospheric pressure, and the door cannot open There was a problem such as not.

Therefore, in order to solve the above problems, as in Patent Document 1, an air pressure adjustment device consisting of an inner grill, a case, an air pressure adjustment valve, a vent, an outer pipe, and an outer grill is implemented in a communication hole that communicates the inside and outside of the freezer. When the door is opened and closed, the air pressure inside and outside the freezer is adjusted to make the door easier to operate, but the aforementioned air pressure control device has a complicated configuration of the air pressure control valve, causing inconvenience in manufacturing and assembly, and due to the cryogenic freezer temperature. There was a problem that smooth operation was impossible due to the freezing of the assembly part.

In addition, a heating wire was installed along the circumference of the barometric pressure adjusting valve in order to eliminate the freezing, but there was still a problem in that it was difficult to solve the freezing due to the distance from the operation section of the center.

[Patent Document 1]. Republic of Korea Patent Publication No. 10-0515739. Air pressure adjustment device for freezer (Registration date September 12, 2005)

In order to solve the problems of the prior art as described above, the present invention is to improve the ease of use by allowing the door to be opened and closed without applying excessive force by balancing the air pressure inside and outside the freezer when opening and closing the freezer door. It has its purpose.

Another object of the present invention is to simplify the configuration of the air pressure adjustment device to be more easily installed on the wall of the freezer, and to improve the work efficiency according to maintenance by easy disassembly and assembly of the air pressure adjustment valve.

Another object of the present invention is to simplify the combination of the air pressure adjustment valve and the moving path shielding plate, and to mount various heat transfer members along the circumference of the air pressure adjustment valve, thereby improving manufacturing and assembly convenience, and reducing manufacturing cost. It is to increase market competitiveness.

The present invention for solving such a technical problem,

The freezer (1) is provided with an inner flange (11) and an inner body (12) to be intercepted by being inserted into the mounting hole (3) in one direction of the wall (2) in which the mounting hole (3) is formed so that the inside and the outside communicate An inner housing 10;

An outer housing (20) having an outer body (22) and an outer flange (21) into which the inner body (12) of the inner flange (11) is inserted by being inserted into the mounting hole (3) from the other side of the wall (2) ;

It is inserted into the assembly space 13 of the inner body 12 in one direction of the inner housing 10, and an air passage 32 is formed in the longitudinal direction in the center, and the inner wall surface of the air passage 32 An air pressure adjustment valve having a hinge hole 33 in the assembly space 13 with support plates 31 formed on both sides of the assembly space 13 and a square-shaped heating element fixing surface 34 formed between the support plates 31 (30) and;

A moving path shielding plate 40 for opening and closing the air moving path 32 by inserting a hinge shaft 41 rotatably into the hinge hole 33 of the air pressure adjusting valve 30;

It is installed along the periphery of the outer diameter of the air pressure adjustment valve 30, is configured to include a heat transfer member 50 that generates heat according to power supply;
In the inner housing 10, a coil guide groove 11a is cut in the inner flange 11, and an insertion bump 12a is bent in the direction of the center of the assembly space 13 at the other end of the assembly space. The support plate 31 of the pressure adjustment valve 30 inserted into (13) is supported by the assembly space 13 while being caught by the insertion bump 12a,
The heating element fixing surface 34 of the air pressure adjustment valve 30 includes at least the hinge shaft 41 of the moving path shielding plate 40 assembled on the air moving path 32 between the support plates 31 on both sides. The heating wire guide grooves 35a are continuously formed in the heating wire fixing part 35, which is a square-shaped corner, at intervals in the longitudinal direction, so that the heating wire coil 52 included in the heat transfer member 50 is inserted into the heating wire guide groove 35a. ) Along the lengthwise direction of the heat wire fixing part 35 and configured to transfer heat to the hinge hole 33 and the hinge shaft 41 axially coupled.

In addition, a packing member 61 and a cover member 60 are further mounted to the inner flange 11 of the inner housing 10 and the outer flange 21 of the outer housing 20, while the screw member 62 is It is achieved by fastening the cover member 60 and the inner and outer flanges 11 and 21 to the wall 2.

In addition, the air passage 32 and the moving path shielding plate 40 are formed to have any one shape from a cylinder, a triangle, or a polygon, so that the hinge shaft 41 of the moving path shielding plate 40 moves air. It is configured to be mounted in the hinge hole 33 of the furnace 32, and the heat transfer member 50 is either a planar heating element 51 or a heating coil 52 or can be used in parallel, and the planar heating element 51 is It is achieved by mounting on the heating element fixing surface 34 of the air pressure adjustment valve 30.

Further, inclined guide surfaces 36 are further formed on both side walls of the air passage 32 of the air pressure adjustment valve 30 in the direction of the hinge hole 33 from the tip, and the inclined guide surface 36 has a deep tip and a hinge hole ( 33) by sliding the hinge shaft 41 of the moving path shielding plate 40 into the tip of the inclined guide surface 36 to guide it in the direction of the hinge hole 33 to guide the moving path shielding plate including the hinge shaft 41 As (40) is retracted with elasticity, the hinge shaft 41 is retracted at the hinge hole position and is configured to be fitted and assembled.

In addition, the air pressure adjustment valve 30 has a shape in which the air passage 32 having one hinge hole 33 is opened in the longitudinal direction, and is formed in pairs of two to face each other, and is bound to the side walls facing each other. Each of the protrusions 37a and the binding grooves 37b may be provided so as to be integrally bound.

In addition, a male screw portion 12a is formed on the outer diameter surface of the inner body 12, and a female screw portion 22a to which the male screw portion 12a is fastened is formed on the inner diameter surface of the outer body 22, and the inner The distance between the inner flange 11 and the outer flange 21 can be adjusted according to the rotational direction of the body 12 and the outer body 22, so that it can be conveniently adjusted according to the thickness of the wall.

According to the present invention, the inner and outer housings and the air pressure adjusting valve are formed in a circular shape, so that the processing of the mounting holes provided on one side wall of the freezer or the freezer is easy, and when the freezer door is opened and closed, the inside and outside air The door can be opened and closed easily as the air pressure inside and outside is naturally adjusted through instantaneous ventilation.

In addition, since the configuration of the air pressure adjusting device is simplified, it is possible to more easily install it in the mounting hole, and accordingly, maintenance and manufacturing cost can be reduced, thereby increasing product competitiveness.

In addition, in order to prevent frosting of the shielding plate that regulates the air passage, the surface heating element or the heating coil is easily mounted along the outer surface of the air pressure adjustment valve to prevent damage and short-circuit malfunction of the heat transfer member. There is also an effect that can increase competitiveness, such as preventing the same accident.

1 is an installation state diagram of an air pressure adjusting device for a freezer according to the present invention.
Figure 2 is an exploded perspective view of the present inventors air pressure adjustment device for a freezer.
Figure 3 is an installation cross-sectional view of the present inventors air pressure adjustment device for a freezer.
Figure 4 is a plan sectional view of the air pressure adjustment valve constituting the present invention.
Figure 5 is a side cross-sectional view of the air pressure adjustment valve constituting the present invention.
Figure 6 is an exploded perspective view showing an embodiment of the air pressure adjustment valve configuration of the present invention.

The present inventor's air pressure adjusting device for freezer is installed on the wall of the freezer to balance the air pressure inside and outside the freezer when opening and closing the door so that the user can open and close the freezer door more easily, and simplify the product configuration to make manufacturing and assembly work It was invented to improve the convenience of the product.

Hereinafter, the configuration of the air pressure adjusting device for a freezer according to the present invention will be understood by the embodiments described in detail with reference to the accompanying drawings.

Since the present invention can be modified in various ways and has various forms, embodiments will be described in detail in the text. However, this is not intended to limit the present invention to a specific form of disclosure, and it should be understood that all changes, equivalents, and substitutes included in the spirit and scope of the present invention are included.

The present inventors air pressure adjusting device 100 for a freezer, as shown in Figs. 1 and 6, the inner housing 10 and the outer housing 20 that are largely fitted into the mounting hole 3 formed in the wall 2 of the freezer 1 ) And a heat transfer member 50 that is inserted into the inner housing 10 and generates heat according to power supply, and a moving path shielding plate 40 that opens and closes the moving path of internal and external air is hinged to adjust the air pressure. It consists of a side (30).

To explain this in more detail, a circular mounting hole 3 is formed in the wall 2 of the freezer 1 so that the interior and the exterior communicate with each other, and a circular inner housing corresponding to the shape of the mounting hole 3 ( 10) and the outer housing 20 to be inserted from the inside and outside of the wall (2), respectively.

The inner housing 10 includes an inner flange 11 intercepted to one side of the wall 2, and an assembly space 13 formed in the longitudinal direction from the center of the inner flange 11, so that the cylindrical inner body ( 12), and a coil guide groove (11a) is further formed by cutting a part of the inner flange (11) so that the power supply line is located, and an insertion bump (12a) is formed at the other end of the assembly space (13). It is bent in the direction to regulate the excessive insertion of the pressure adjustment valve 30, which will be described later.

The outer housing 20 includes an outer flange 21 intercepted to the other side of the wall 2 and a housing insertion space 23 in the longitudinal direction from the center of the outer flange 21. 22), so that the inner body 12 of the inner housing 10 is inserted into the inner housing insertion space 23 while the outer body 22 is inserted into the mounting hole 3 of the wall 2.

Therefore, the inner housing 10 and the outer housing 20 are inserted into the mounting hole 3 from the inside and outside of the wall 2 of the freezer 1, so that the inner body 12 is the housing insertion space of the outer body 22. It is to be inserted into (23), it is natural that the insertion length of the inner body 12 and the outer body 22 varies according to the thickness of the wall (2).

Here, a male screw portion 12a is formed on the outer diameter surface of the inner body 12, and a female screw portion 22a to which the male screw portion 12a is fastened is formed on the inner diameter surface of the outer body 22, and the It is possible to adjust the distance between the inner flange 11 and the outer flange 21 according to the direction of rotation of the inner body 12 and the outer body 22, so that the inner housing 10 and the outer housing ( It is also included in the present invention that 20) can be easily adjusted and used.

In addition, the packing member 61 is positioned between the wall 2 in the inner flange 11 of the inner housing 10 and the outer flange 21 of the outer housing 20, and the ventilation hole 60a is The cover member 60 formed in plural is wrapped around the inner flange 11 and the outer flange 21 and supported by the wall 2, and the cover member 60 and the inner and outer flanges 11, through the screw member 62, 21) to the wall (2).

As an example of the cover member 60, a long ventilation hole 60a is formed in the inner flange 11, and the outer flange 21 prevents the inflow of foreign substances and insects, while allowing air to pass smoothly. It is preferable to form a plurality of micro holes.

The barometric pressure adjusting valve 30 is inserted into the assembly space 13 of the inner body 12 in one direction of the inner housing 10 and is assembled by being hooked on the insertion bump 12a described above, and in the center of the longitudinal direction As a result, the air passage 32 is formed, and a hinge hole 33 is provided on the inner wall surface of the air passage 32.

Here, the air passage 32 is opened or closed by the passage shielding plate 40, and the moving passage shielding plate 40 is formed corresponding to the shape of the air passage 32, and at the top The hinge shaft 41 is protruded and is rotatably inserted into the hinge hole 33 to be bound.

In addition, support plates 31 are formed at both end portions corresponding to the inner diameter shape of the assembly space 13, so that even when the air pressure adjustment valve 30 is inserted into the assembly space 13, the support plates 31 on both sides of the assembly space ( 13) to prevent shaking.

And, the air pressure adjustment valve 30 is formed by forming a heating element fixing surface 34 between the support plates 31 at both ends so that the outer surface has a square shape, the same as the planar heating element 51 on each heating element fixing surface 34 Install the heat transfer member 50.

In addition, at the corners between the heating element fixing surfaces 34 having a quadrangular shape on the outer surface of the air pressure adjustment valve 30, a heating wire fixing part 35 in which a heating wire guide groove 35a is continuously formed at intervals in the longitudinal direction is formed. , It is also possible to install the heat transfer member 50, such as the heat wire coil 52, to wrap along the outer diameter of the air pressure adjustment valve 30 to fit the spacing of the heat wire guide groove (35a).

Therefore, by selecting any one of the planar heating element 51 or the heating coil 52 constituting the heat transfer member 50 on the heating element fixing surface 34 and the heating wire fixing part 35 of the air pressure adjusting valve 30 Alternatively, a planar heating element 51 is mounted on the heating element fixing surface 34 of the air pressure adjustment valve 30, and the heating wire coil 52 is installed along the circumference of the heating element fixing surface 34 of the air pressure adjustment valve 30 It can be configured in parallel.

At this time, the pressure adjusting valve 30 is in a state in which the support plate 31 is supported on both sides of the assembly space 13 of the inner body 12, so that the heating element fixing surface 34 and the heating element between the support plate 31 The heat transfer member 50 installed on the top 35 is prevented from contacting the inner body 12.

In addition, the barometric pressure adjusting valve 30 has a wire insertion hole 31a formed in the support plate 31 facing the inner housing 10, so that the wall 2 or a power supply line inserted from the outside (not shown) By being fitted and connected to the heat transfer member 50, the support plate 31 in the direction facing the outer housing 20 is formed in a plurality at intervals, and a heat wire transfer path (not shown) is provided therebetween, and the heat wire coil ( 52) It is also possible to install it so that it surrounds the heat transfer path.

The air pressure adjustment valve 30 is injection-molded with heat resistance than the maximum temperature of the heating wire fixing unit 35 to prevent accidents such as melting or fire even at the maximum temperature of the heat transfer member 50 And, through the heat transfer member 50, the heat is transferred to the body whose heat source is the pressure control valve 30 to have a constant temperature.

Therefore, as the body of the air pressure adjusting valve 30 is heated by the heat transfer member 50, the hinge of the moving path shielding plate 40 in the process of venting internal and external air due to the opening of the air moving path 32 By evaporating the moisture generated in the shaft 41 and the hinge hole 33, it is possible to prevent freezing even at a low temperature of the freezer due to the closing of the air passage 32, and even if the hinge shaft is frozen in the hinge groove. It melts the freezing part more easily, so that the moving path shielding plate 40 can be rotated.

Here, when the assembly of the movement path shielding plate 40 is described, an inclined guide surface 36 is further formed on both side walls of the air movement path 32 in the direction of the hinge hole 33 from the tip, the inclined guide surface (36) has a deep and low inclined shape in the direction of the hinge hole, so that the hinge shaft 41 of the moving path shield plate 40 is inserted into the tip of the inclined guide surface 36 and guided by pushing in the direction of the hinge hole 33 Thus, the upper part of the moving path shielding plate is retracted with elasticity, and the hinge shaft 41 is forcibly fitted at the hinge hole position to restore it.

At this time, a weight part (unsigned) is further formed at the lower end of the moving path shielding plate 40 so that the door of the freezer 1 is opened and closed to the air introduced through the air moving path 32 due to the difference in atmospheric pressure. By this, the rotated movement path shielding plate 40 is returned to its original position more easily.

As an embodiment of the present invention, it has been found that the present invention also includes one moving path shielding plate 40 installed on the air passage 32 or a plurality of moving path shielding plates 40 installed so as not to interfere with each other. Put.

In addition, the air passage 32 and the moving passage shielding plate 40 are shown to have a square shape, but are not limited to a square shape, but a circular, triangular or polygonal shape while the moving passage shielding plate 40 It is also included in the present invention that the hinge shaft 41 of is mounted in the hinge hole 33 provided in the air passage 32.

And, as another embodiment of the present invention, the air pressure adjustment valve 30 is integrally injection-molded, or the air passage 32 having one hinge hole 33 is opened in the longitudinal direction and has a 2 It is formed to face each other in a set of pieces, and may be configured to be integrally bonded by providing a binding protrusion 37a and a binding groove 37b on the sidewalls facing each other, thereby making injection molding easier.

When explaining a preferred embodiment of the use of the air pressure adjusting device 100 configured as described above, first, in a state in which various foods or various items are stored and stored in the freezer 1, the user keeps in the freezer 1 At the moment of opening the door of the freezer (1) to withdraw the goods, the moving path shielding plate (40) closing the air passage (32) of the air pressure adjusting valve (30) is in the inner direction around the hinge shaft (41). While rotating, the air passage 32 is opened and external air is sucked into the freezer 1, so that the difference between the air pressure inside the freezer 1 and the outside air pressure is instantly balanced, and the door of the freezer 1 It opens gently.

And, at the moment when the door of the freezer 1 is closed, the moving path shielding plate 40 closing the air passage 32 rotates in an outward direction around the hinge shaft 41, and the air passage 32 Is opened, internal air is discharged, and the door 1 is correctly closed.

Here, the air pressure adjusting valve 30 in a state where the hinge shaft 41 of the moving path shielding plate 40 is fitted into the hinge hole 33 formed in the air moving path 32 of the air pressure adjusting valve 30 Heat is transferred to the air pressure adjusting valve 30 by a heat source of a heat transfer member 50 including a planar heating element 51 and a heating coil 52 installed independently or in parallel to the outer surface of the hinge shaft 41 to freeze It prevents the situation in which it is impossible to rotate or move due to sexual love.

As described above, the above-described embodiment has been described with respect to the most preferable example of the present invention, but is not limited to the above embodiment, and it is obvious to those skilled in the art that various modifications can be made within the scope of the technical spirit of the present invention. .

10. Inner housing 12. Inner body
20. Outer housing 22. Outer body
30. Pressure adjustment valve 31. Support plate
32. Air path 33. Hinge hole
34. Heating element fixing surface 35. Heating wire fixing part
36. Inclined guide surface 40. Moving road shielding plate
41. Hinge shaft 50. Heat transfer member
51. Planar heating element 52. Heated coil
60. Cover member 100. Air pressure control device

Claims (7)

The freezer (1) is provided with an inner flange (11) and an inner body (12) to be intercepted by being inserted into the mounting hole (3) in one direction of the wall (2) in which the mounting hole (3) is formed so that the inside and the outside communicate with each other. An inner housing 10;
An outer housing (20) having an outer body (22) and an outer flange (21) into which the inner body (12) of the inner flange (11) is inserted by being inserted into the mounting hole (3) from the other side of the wall (2) ;
It is inserted into the assembly space 13 of the inner body 12 in one direction of the inner housing 10, and an air passage 32 is formed in the longitudinal direction in the center, and the inner wall surface of the air passage 32 An air pressure adjustment valve having a hinge hole 33 in the assembly space 13 with support plates 31 formed on both sides of the assembly space 13 and a square-shaped heating element fixing surface 34 formed between the support plates 31 (30) and;
A moving path shielding plate 40 for opening and closing the air moving path 32 by inserting a hinge shaft 41 rotatably into the hinge hole 33 of the air pressure adjusting valve 30;
It is installed along the periphery of the outer diameter of the air pressure adjustment valve 30, is configured to include a heat transfer member 50 that generates heat according to power supply;
In the inner housing 10, a coil guide groove 11a is cut in the inner flange 11, and an insertion bump 12a is bent in the direction of the center of the assembly space 13 at the other end of the assembly space. The support plate 31 of the pressure adjustment valve 30 inserted into (13) is supported by the assembly space 13 while being caught by the insertion bump 12a,
The heating element fixing surface 34 of the air pressure adjustment valve 30 includes at least the hinge shaft 41 of the moving path shielding plate 40 assembled on the air moving path 32 between the support plates 31 on both sides. The heating wire guide grooves 35a are continuously formed in the heating wire fixing part 35, which is a square-shaped corner, at intervals in the longitudinal direction, so that the heating wire coil 52 included in the heat transfer member 50 is inserted into the heating wire guide groove 35a. ), the air pressure adjustment device for a freezer, characterized in that it is configured to transmit heat to the hinge hole 33 and the hinge shaft 41, which are axially coupled by winding in the longitudinal direction of the heat wire fixing part 35. The method according to claim 1, wherein a packing member 61 is provided between the inner flange 11 and the outer flange 21 facing the wall 2, and a cover member surrounding the inner flange 11 and the outer flange 21 As (60) is further assembled, the screw member (62) fastens the cover member (60) and the inner and outer flanges (11, 21) to the wall (2) to fix it. The method according to claim 1, wherein the air movement path 32 and the movement path shielding plate 40,
For a freezer, characterized in that it is molded to have any one shape from a cylinder, a triangle or a polygon, and the hinge shaft 41 of the moving path shielding plate 40 is mounted in the hinge hole 33 of the air passage 32 Air pressure regulator. The method as set forth in claim 1, wherein an inclined guide surface 36 is further formed on both side walls of the air passage 32 of the air pressure adjustment valve 30 from the tip toward the hinge hole 33,
The inclined guide surface 36 has a deep tip and is inclined low in the direction of the hinge hole 33 so that the hinge shaft 41 of the moving path shielding plate 40 is inserted into the tip of the inclined guide surface 36 and pushed in the direction of the hinge hole 33 Air pressure adjustment device for a freezer, characterized in that the moving path shielding plate 40 including the hinge shaft 41 is retracted with elasticity by guiding, and the hinge shaft 41 is retracted and assembled at the hinge hole position. The method according to claim 1, wherein the air pressure adjustment valve 30 has a shape in which an air passage 32 having one hinge hole 33 is opened in the longitudinal direction and is formed in pairs of two to face each other, and side walls facing each other Atmospheric pressure adjustment device for a freezer, characterized in that the binding protrusion (37a) and the binding groove (37b) is provided to be integrally coupled to each. The method according to claim 1, wherein the heat transfer member 50 is a planar heating element 51 or a heating coil 52 can be used in combination or in parallel, and the planar heating element 51 is a heating element fixing surface 34 of the pressure control valve 30. ), the air pressure adjustment device for a freezer, characterized in that mounted on. The method according to claim 1, wherein a male screw portion (12a) is formed on the outer diameter surface of the inner body (12), and a female screw portion (22a) to which the male screw portion (12a) is fastened is formed on the inner diameter surface of the outer body (22), Air pressure adjustment device for a freezer, characterized in that configured to adjust the distance between the inner flange (11) and the outer flange (21) according to the rotational direction of the inner body (12) and the outer body (22).

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