Internal pressure adjustment device of refrigerator

Abstract

To compose a pressure adjustment device with double performance by simply combining two existing ventilators.SOLUTION: An internal pressure adjustment device 1 for a refrigerator includes: an internal louver 2 provided with upper and lower left and right fixed plate parts 22 fixed to a peripheral edge part of a front surface on the internal part of an opening P1 of a wall panel P and two upper and lower ventilators 3, 4 fixed to the internal louver 2. The ventilators 3, 4 are provided with valve frames 31, 41 that have flange parts 34, 44 and valve seat parts 32, 42 with which valves 33, 43 on an intake side and an exhaust side are assembled. The upper and lower ventilators 3, 4 have front surfaces of the flange parts 34, 44 fixed to a plate part 23 between an internal surface and a vent hole 21 of the fixed plate part 22 of the internal louver 2. The internal louver 2 is fixed to the front surface side peripheral edge part of the opening P1 by superimposing the fixed plate part 22 onto the flange parts 34, 44 of the upper and lower ventilators 3, 4.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a device for adjusting the air pressure inside a refrigerator, freezer, or the like. [Background technology]

[0002] A conventional internal and external pressure equalization device for a refrigerator is disclosed in Patent Document 1. This device includes a body that fits into a through-hole formed in the refrigerator wall and can close the through-hole. The body includes a first inclined wall portion that slopes downward toward the interior of the refrigerator and a second inclined wall portion that slopes upward toward the interior of the refrigerator. Each inclined wall portion has an opening. A normally closed valve made of silicone rubber that closes the opening is provided on the upper surface of each inclined wall portion. The upper end of each normally closed valve is fixed to a portion of the inclined wall portion above the opening. A flange on the periphery of the body is screwed to the periphery of the opening, overlapping the periphery of the louver. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 9-269183 Summary of the Invention [Problem to be solved by the invention]

[0004] A refrigerator may require a larger vent depending on various factors such as its size. Since the conventional internal and external pressure equalizing device is designed and manufactured to fit a specific size vent, when it is applied to a refrigerator requiring a larger vent, multiple vents of a size that fit the device must be formed and the device must be attached to each of the vents, which is a complicated process and causes problems such as louvers and a spoiled appearance. Therefore, an object of the present invention is to easily combine two existing ventilators to form a single air pressure adjusting device with double the performance. [Means for solving the problem]

[0005] In the following description, reference will be made to the reference numerals in the accompanying drawings, but the present invention is not limited thereto. To solve the above problems, the refrigerator internal air pressure regulating device 1 of the present invention includes an internal louver 2 having upper, lower, left, and right fixing plate portions 22 attached to the periphery of the interior front surface of a rectangular opening P1 formed in a wall panel P of the refrigerator, and two upper and lower ventilators 3, 4 attached to the internal louver 2. The ventilators 3, 4 each include a valve frame 31, 41 having upper, lower, left, and right flange portions 34, 44 forming a horizontally elongated rectangular frame and valve seats 32, 42 to which intake and exhaust valves 33, 43 are attached. The upper, lower, left, and right flange portions 34, 44 are attached to the front peripheral portion of a matching opening approximately half the size of the opening P1, allowing for standalone use. The internal louver 2 is made of a rectangular aluminum plate with multiple horizontally elongated vent holes 21 formed at intervals above and below. The front faces of the upper flange 34a and the left and right flanges 34c, 34d of the upper ventilator 3 are fixed to the upper part of the interior louver 2 and the inner faces of the left and right fixed plate parts 22a, 22c, 22d, and the front face of the lower flange 34b is fixed to the plate part 23 between the two upper and lower vent holes 21 located in the vertical center of the interior louver 2. The front faces of the lower flange 44b and the left and right flange parts 44c, 44d of the lower ventilator 4 are fixed to the inner faces of the lower part 22b of the interior louver 2 and the left and right fixed plate parts 22c, 22d, and the front face of the upper flange 44a is fixed to the plate part 23 between the two upper and lower vent holes 21 located in the vertical center of the interior louver 2. The interior louvers 2 are fixed to the periphery of the front side of the opening P1 with the top, bottom, left and right fixing plate portions 22 overlapping the flange portions 34, 44 of the upper and lower ventilators 3, 4. [Effects of the Invention]

[0006] According to the present invention, two existing standalone ventilators can be easily combined to form a single air conditioning device with double the performance. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 2 is an exploded perspective view of the internal air pressure adjusting device according to the present invention. [Figure 2] 2 is a front view of the internal air pressure adjusting device of FIG. 1 with the internal louvers removed. FIG. [Figure 3] FIG. 2 is a cross-sectional view of the internal air pressure adjusting device of FIG. 1 in an installed state. DETAILED DESCRIPTION OF THE INVENTION

[0008] An embodiment of the present invention will be described with reference to the drawings. The internal air pressure adjusting device 1 comprises an internal louver 2 and two upper and lower ventilators 3, 4 fixed thereto.

[0009] The interior louver 2 is made of a rectangular aluminum plate with many narrow, horizontally elongated vent holes 21 formed at intervals above and below. The interior louver 2 is provided with upper, lower, left, and right fixing plate portions 22a, 22b, 22c, and 22d at its periphery that are fixed to the periphery of the front surface of the interior side of a rectangular opening P1 formed in the wall panel P of the refrigerator.

[0010] The ventilators 3, 4 are each formed by assembling intake and exhaust valves 33, 43 to valve seats 32, 42 of valve frames 31, 41. The valve frames 31, 41 are each provided with upper, lower, left, and right flanges 34, 44 forming a horizontally elongated rectangular frame.

[0011] The ventilators 3 and 4 are existing devices that can be installed in an opening (not shown) of suitable dimensions that is approximately half the size of the opening P1 shown in the figure and used independently. In this case, the ventilators are installed by fastening the upper, lower, left, and right flanges 34 and 44 to the front peripheral edge of the opening of suitable dimensions.

[0012] In the air pressure adjustment device 1 according to the present invention, the front surfaces of the upper flange 34a and the left and right flanges 34c, 34d of the upper ventilator 3 are fixed to the inner surfaces of the upper fixing plate 22a and the left and right fixing plate 22c, 22d of the interior louver 2 with double-sided adhesive tape 35, and the front surface of the lower flange 34b is fixed to the plate 23 between the two upper and lower air vents 21 located in the vertical center of the interior louver 2.

[0013] The front faces of the lower flange 44b and the left and right flanges 44c, 44d of the lower ventilator 4 are fixed with double-sided adhesive tape 45 to the inner surfaces of the lower fixing plate 22b and the left and right fixing plate parts 22c, 22d of the interior louver 2, and the front face of the upper flange 44a is fixed to the plate part 23 between the two upper and lower vent holes 21 located in the vertical center of the interior louver 2. The interior louver 2 is fixed to the peripheral part of the front face of the opening P1 with the upper, lower, left and right fixing plate parts 22a, 22b, 22c, 22d overlapping the upper and left flange parts 34a, 34c, 34d of the upper ventilator 3 and the upper and left flange parts 44b, 44c, 44d of the lower ventilator 4.

[0014] A spacer 5 is interposed depending on the thickness of the panel P, and an exterior louver 6 is fixed to the front peripheral edge of the opening P1 on the exterior side of the cabinet. [Explanation of symbols]

[0015] 1. Storage pressure adjustment device 2 Upper ventilator 21 Ventilation 22 Fixed plate part 22 22a Upper fixing plate part 22b Lower fixing plate part 22c Left fixed plate part 22d Right fixing plate 3 Upper ventilator 31 Valve frame 32 Valve seat 33 Valve 34 Tsuba 34a Upper tsuba 34b Lower tsuba 34c Left collar 34d Right tsuba 35 double-sided adhesive tape 4 Lower Ventilator 41 Valve frame 42 Valve seat 43 Valve 44 Tsuba 44a Upper tsuba 44b Lower tsuba 44c Left collar 44d Right tsuba 45 double-sided adhesive tape

Claims

[Claim 1] The refrigerator comprises an interior louver having upper, lower, left, and right fixing plate portions fixed to the periphery of the interior front surface of a rectangular opening formed in a wall panel of the refrigerator, and two upper and lower ventilators fixed to the interior louver, The ventilator comprises a valve frame having upper, lower, left, and right flanges in the shape of a horizontally elongated rectangular frame, and valve seats to which intake and exhaust valves are attached, and is configured so as to be usable independently by fastening the upper, lower, left, and right flanges to the front peripheral edge of a matching opening that is approximately half the size of the opening; The interior louver is formed by forming a large number of horizontally elongated vent holes at intervals above and below a rectangular aluminum plate material, The upper ventilator has front surfaces of the upper flange and the left and right flanges fixed to the inner surfaces of the upper and left and right fixing plate portions of the interior louver, and a front surface of the lower flange fixed to a plate portion between two upper and lower vent holes located in the vertical center of the interior louver, The lower ventilator has the front surfaces of the lower flange and the left and right flanges fixed to the inner surfaces of the lower part and the left and right fixing plate parts of the interior louver, and the front surface of the upper flange is fixed to a plate part between two upper and lower vent holes located in the vertical center of the interior louver, The interior louvers are fixed to the front peripheral edge of the opening with the upper, lower, left, and right fixing plate portions overlapping the flange portions of the upper and lower ventilators.

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