JP2014238212A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem in which although heat insulating performance can be enhanced by forming a plurality of air layers in a fitting part for guaranteeing workability for a gasket, it is difficult to perform stable molding.SOLUTION: A gasket 130 includes: a magnet holding part 131 into which a magnet is incorporated; a fitting part 132 which engages a groove provided on a heat insulation door; a flexible part 133 which connects the fitting part 132 and the magnet holding part 131 to each other in a free extension/contraction state; an "a" bag-like part and a "b" bag-like part which are partitioned off into two by a partition wall provided in the fitting part 132; and a fin atop of the fitting part. The partition wall is made less in thickness than both side faces of the fitting part, and tilted to shape a metal mold such that a part thinner than the other parts is minimized. Thereby, moldability and improved heat insulation performance of the gasket can be secured.

Description

  The present invention relates to a gasket for a refrigerator-freezer having a high energy saving effect.

As demands for energy saving become strict, reduction of intrusion heat, especially reduction of the amount of intrusion heat from the gasket portion, is emphasized by heat insulation technology. (For example, see Patent Documents 1 and 2)
Hereinafter, a conventional refrigerator gasket will be described with reference to the drawings.

  FIG. 5 is a sectional plan view of a gasket of a conventional refrigerator-freezer. In FIG. 5, a gasket 40 connects a magnet holding part 41 containing a magnet (not shown), an attachment part 42 that engages with a groove attached to a heat insulating door, and connects the magnet holding part 41 and the attachment part 42. A flexible portion 43 that is freely extended and contracted, and a magnet side bag-like portion 45 formed between the magnet holding portion 41 and the flexible portion 43 in contact with the storage chamber side of the magnet holding portion 41. Is done. The magnet provided in the magnet holding part 41 of the gasket 40 forming the air layer is attracted to the refrigerator main body when the door is closed, so that the heat insulation box and the heat insulation door are sealed via the gasket 40. Thereby, the heat outside the refrigerator or the heat generated from the hot line penetrates into the inside of the refrigerator or the cool air inside the refrigerator leaks outside the refrigerator to prevent heat leakage.

JP 2012-37151 A JP2012-83069A

  However, in the above-described conventional gasket configuration, heat insulation performance can be secured by the air layer of the mounting portion 42 that guarantees heat insulation and workability. In the case of the shape, there is a problem that it is difficult to stably form the door gasket at the time of extrusion molding.

  This invention solves the said conventional subject, and it aims at providing the refrigerator provided with the gasket with a high energy-saving effect, while ensuring a moldability.

In order to solve the above conventional problems, the refrigerator of the present invention includes an inner box, an outer box, and a heat insulating box formed by a heat insulating material filled between the inner box and the outer box, A partition wall that divides the heat insulation box into upper and lower storage rooms with different temperature zones, a plurality of storage rooms to which cold air is supplied inside the heat insulation box, and a door that can be opened and closed on the front of each storage room, and provided in the door In a refrigerator provided with a door gasket that closely adheres to the front opening of the storage room,
The door gasket includes a first bag-like portion containing a magnet, a second bag-like portion of an attachment portion that engages with a groove provided in the heat-insulating door, and a gap between the second bag-like portion and the first bag-like portion. A third bag-like portion that ensures the stretchability of the door gasket is provided, the second bag-like portion is divided in the front-rear direction by a partition, and the partition is inclined with respect to the opening surface of the opening.

  Thereby, after ensuring the stable moldability at the time of extrusion molding of a door gasket, the gasket which improved heat insulation performance can be obtained.

  The refrigerator of the present invention adds a heat insulating air layer having a heat insulating effect that secures moldability to the mounting portion, thereby reducing the amount of intrusion heat and reducing power consumption by suppressing the air heat transfer of the gasket body. A refrigerator can be provided.

Front view of the refrigerator in Embodiment 1 of the present invention The longitudinal cross-sectional view of the refrigerator in Embodiment 1 of this invention Sectional drawing of the gasket of the refrigerator in Embodiment 1 of this invention Sectional drawing of the frontage part of the refrigerator in Embodiment 1 of this invention Sectional view of a conventional refrigerator gasket

  1st invention is equipped with the heat insulation box formed by the inner box, the outer box, and the heat insulating material filled between the said inner box and the said outer box, and the front surface of the storage chamber in the said heat insulation box body. In the refrigerator comprising a door that can be opened and closed, and a gasket that is provided on the door and is in close contact with the front opening of the storage chamber, the gasket includes a magnet holding part that incorporates a magnet, and a groove provided in the heat insulating door. A fitting part to be engaged; a bag-like part divided into two parts from a partition provided in the attachment part; a b-bag-like part; and a fin at the tip of the attachment part, By making the thickness thinner than the thickness of both sides of the part and making it inclined, the part where the shape of the mold becomes thinner than other parts can be minimized, and stable by suppressing the strength deterioration of the mold Can be formed. Moreover, the strength of the mounting portion when the gasket is assembled and inserted into a groove provided in the door at the factory can be improved. In addition, when the gasket and the door are assembled, a heat insulation performance is improved by providing a fin provided at the tip of the mounting portion, an air layer formed by the door inner, and an air layer formed in the mounting portion by the partition. Thus, it is possible to provide a refrigerator in which the amount of heat entering from the gasket is reduced and the power consumption is reduced.

  According to a second aspect of the present invention, in the first aspect, the gasket includes a bag-shaped portion and a b-bag-shaped portion that are divided into two parts by a partition wall provided in the mounting portion. By setting the height A on the inner side of the b-bag-like portion to be smaller than the height B on the outer side, the heat insulating air layer on the door side reduces heat transfer from the outer side and more efficiently suppresses the intrusion heat amount. be able to.

  According to a third aspect of the present invention, in the first or second aspect, the gasket is provided with a heat conduction suppressing portion on both side walls of the mounting portion, thereby suppressing heat conduction by the gasket main body and reducing the amount of heat intruding into the cabinet. Can be reduced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a front view of the refrigerator according to Embodiment 1 of the present invention. FIG. 2 is a longitudinal sectional view of the refrigerator in the first embodiment of the present invention. FIG. 3 is an enlarged cross-sectional view of a main part of the gasket of the refrigerator in the first embodiment of the present invention. FIG. 4 is a cross-sectional view of the front of the refrigerator in the first embodiment of the present invention.

In FIG. 1 and FIG. 2, a heat insulating box body 101 which is a refrigerator main body of a refrigerator 100 includes an outer box 102 mainly using a steel plate, an inner box 103 formed of a resin such as ABS, an outer box 102 and an inner box. 103 and a foam heat insulating material such as hard foam urethane filled in a space between the space 103 and the surroundings, insulated from the surroundings, and partitioned into a plurality of storage chambers. Refrigeration room 1 as the first storage room at the top
04, a second freezing room 105 as a fourth storage room and an ice making room 106 as a fifth storage room are provided side by side below the refrigerator compartment 104, and the second freezing room 105 and the ice making room 106 are provided side by side. The 1st freezer compartment 107 as a 2nd storage room is arranged in the lower part of this, and the vegetable compartment 108 as a 3rd storage room is arrange | positioned in the lowest part.

  The refrigerating room 104 includes a refrigerating room right door 104a and a refrigerating room left door 104b, which are rotary doors, and a refrigerating room shelf 104c and a refrigerating room case 104d are appropriately disposed therein, so that the storage space can be easily arranged. doing. On the other hand, the other storage rooms have drawer doors, the second freezer compartment door 105a has a second freezer compartment case 105b, the icemaker door 106a has an icemaker case 106b, and the first freezer compartment. The upper freezer compartment case 107b and the lower freezer compartment case 107c are placed on the door 107a, and the upper vegetable compartment case 108b and the lower freezer compartment case 108c are placed on the frame attached to the door, respectively.

  The refrigerated room 104 is set to a refrigerated temperature zone which is a temperature that does not freeze for refrigerated storage, and is usually set to 1 ° C. to 5 ° C. The vegetable temperature range is 2 ° C to 7 ° C. The first freezer compartment 107 is set in a freezing temperature zone, and is usually set at −22 ° C. to −15 ° C. for frozen storage, but in order to improve the frozen storage state, for example, −30 ° C. It may be set at a low temperature of -25 ° C.

  The second freezer compartment 105 is a first storage compartment having a freezing temperature range equivalent to that of the first freezer compartment 107 or a slightly higher temperature setting of −20 ° C. to −12 ° C. The ice making chamber 106 makes ice with an automatic ice maker (not shown) provided at the upper part of the room with water sent from a water storage tank (not shown) in the refrigerator compartment 104 and stores it in the ice making case 106b.

  The top surface portion of the heat insulating box 101 has a stepped recess shape toward the back of the refrigerator. A machine chamber 101a is formed in the stepped recess, and the compressor 109, moisture is formed in the machine chamber 101a. Houses high pressure side components of the refrigeration cycle such as a dryer (not shown) for removal. That is, the machine room 101 a in which the compressor 109 is disposed is formed by biting into the uppermost rear region in the refrigerator compartment 104.

  Thus, by providing the machine room 101a in the rear region of the uppermost storage room of the heat insulation box 101 that has become a dead space that is difficult to reach, the compressor 109 is disposed in the conventional refrigerator. The space in the machine room at the bottom of the easy-to-use heat insulation box 101 can be effectively converted as the storage room capacity, and the storage performance and usability can be greatly improved.

  The refrigeration cycle is formed of a series of refrigerant flow paths sequentially including a compressor 109, a condenser, a capillary as a decompressor, and a cooler 112, and a hydrocarbon-based refrigerant such as isobutane is enclosed as a refrigerant. Yes.

  The compressor 109 is a reciprocating compressor that compresses refrigerant by reciprocating a piston in a cylinder. In the case of a refrigeration cycle using a three-way valve or a switching valve for the heat insulation box 101, those functional parts may be disposed in the machine room 101a.

  In this embodiment, the decompressor constituting the refrigeration cycle is a capillary. However, an electronic expansion valve that can freely control the flow rate of the refrigerant driven by the pulse motor may be used.

  In the present embodiment, the matter relating to the main part of the invention described below is a type in which the compressor 109 is arranged by providing a machine room in the rear region of the lowermost storage chamber of the heat insulation box 101 which has been generally used conventionally. It may be applied to other refrigerators.

  A cooling chamber 110 for generating cold air is provided on the back surface of the first freezing chamber 107, and the storage chamber consisting of the second freezing chamber 105, the ice making chamber 106, and the first freezing chamber 107 is separated from the cooling chamber 110. Therefore, a partition member 111 is configured. A cooler 112 is disposed in the cooling chamber 110 and exchanges heat with air warmed by exchanging heat with the storage chamber to generate cold air. The partition member 111 includes a storage chamber side partition member 111 a and a cooling chamber side partition member 111 b, and the cooling chamber side partition member 111 b includes a blower 113. The space between the storage chamber side partition member 111a and the cooling chamber side partition member 111b is an air duct 111c, and cool air forcedly sent out by the blower 113 is stored in the refrigerating chamber 104, the second freezing chamber 105, and the ice making chamber. 106, the first freezer compartment 107 and the vegetable compartment 108.

  The lower space of the cooler 112 is provided with a radiant heating means 114 made of glass tube for defrosting the frost and ice adhering to the cooler 112 and its surroundings at the time of cooling. A drain pan 115 for receiving the generated defrost water, a drain tube 116 penetrating from the deepest part to the outside of the cabinet are configured, and an evaporating dish 117 is configured outside of the downstream side.

  The upper discharge port 120 is provided between the partition wall 118 that partitions the refrigerator compartment 104 and the other storage chamber and the storage chamber side partition member 111a, and the second freezing chamber 105, the ice making chamber 106, and the first freezing chamber 107 are provided. Send cool air as shown by the arrow in the figure. The cold air discharged into the storage chamber is circulated through the second freezer compartment case 105c, the ice making compartment case 106b, the upper freezer compartment case 107b, and the lower freezer compartment case 107c, and then provided below the storage compartment side partition member 111a. The returned suction port 125 is passed through and returned to the cooler 112 for circulation.

  The partition wall 118 is provided with a damper 121, and the cold air passing through the damper 121 is further divided into a refrigerator compartment duct 122 and a vegetable compartment duct (not shown). It is sent to the vegetable compartment 108.

  As shown also in FIGS. 1 and 2, each of these storage rooms, that is, the refrigerator compartment 104, the second freezer compartment 105, the ice making room 106, the first freezer compartment 107, and the vegetable compartment 108 are provided in front of each other. Insulating doors, that is, a refrigerator compartment right door 104a, a refrigerator compartment left door 104b, a second freezer compartment door 105a, an ice making compartment door 106a, a first freezer compartment door 107a, and a vegetable compartment door 108a have storage chambers for each door. At the peripheral edge on the side, a gasket 130 is formed by sealing a gap between the door and the heat insulating box 101 to prevent heat leakage and extruding a soft resin such as polyvinyl chloride.

  Next, the gasket of the refrigerator of this invention is demonstrated using FIG. 3, FIG. The gasket 130 includes an inner box 103, an outer box 102, a heat insulating box 101 formed by a heat insulating material filled between the inner box 103 and the outer box 102, and storage of the heat insulating box 101 in different temperature zones. A partition wall 118 that divides the chamber up and down, a plurality of storage chambers that are supplied with cold air inside the heat insulating box 101, a door that can be opened and closed on the front of each storage chamber, and a door provided in the door at the front opening of the storage chamber In the refrigerator 100 provided with the gasket 130 to be in close contact with, a magnet holding part 131 containing a magnet, a mounting part 132 that engages with a groove provided in the heat insulating door, and a gasket between the mounting part 132 and the magnet holding part 131. A flexible portion 133 that guarantees stretchability, and a magnet lower bag-like portion 134 formed between the magnet holding portion 131 and the flexible portion 133 in contact with the lower portion of the magnet holding portion 131 are provided. There.

  Furthermore, the magnet holding part 131 has a magnet side bag-like part 135 in contact with the storage chamber side, and the magnet lower bag-like part 134 is configured to straddle the magnet holding part 131 and the magnet side bag-like part 135.

Further, the gasket 130 includes an inner peripheral side bag-like portion 136 that extends to the flexible portion 133 and is independent in the direction toward the inside of the storage chamber.

  Moreover, it exists in the both sides | surfaces of the attaching part 132, and the heat conduction suppression part 140 is provided between the warehouse outer side and the warehouse inner side. The heat conduction suppressing portion 140 is a groove shape having a thickness of 2/3 or less with respect to the gasket basic wall thickness.

  Specifically, the gasket in which the magnet holding part 131, the attachment part 132, the flexible part 133, the magnet lower bag-like part 134, the magnet side bag-like part 135, the flexible part 133, and the inner circumferential side bag-like part 136 are formed. In the main body, the magnet holder 131 is disposed on the upper side in FIG. The magnet holding part 131 has a horizontally long cross section and is housed with a magnet inserted therein.

  Further, by providing a partition wall 139 inside the attachment portion 132, the air layers 132a and 132b, the air layer inside the flexible portion 133, the air layer inside the magnet lower bag portion 134, and the magnet side bag portion An air layer inside 135 and an air layer inside the inner circumferential side bag-like portion 136 are formed. As described above, the inside of the gasket body is divided into the magnet holding portion 131 and the plurality of air layers. The air layer formed by the flexible portion 133 is configured to have the maximum area among the plurality of air layers. A bag-shaped portion and a b-bag-shaped portion divided into two from a partition wall 139 provided in the mounting portion 132, and a fin at the tip of the mounting portion 132, and the partition wall 139 is provided on both sides of the mounting portion. By setting the thickness to be thinner than the thickness of the surface and inclining with respect to the opening surface of the front opening of the storage chamber, the portion where the shape of the mold becomes thinner than other portions can be minimized.

  Further, in the a bag-like portion and the b-bag-like portion divided into two from the partition wall 139 provided in the mounting portion 132, the height of the inside of the storage side of the b-bag-like portion on the door side close to the door inner 137. A is configured to be smaller than the height B on the outside of the cabinet.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, the gasket 130 of the present invention is installed between the cabinet and the open / close door for the purpose of heat insulation inside and outside the cabinet, and can effectively block the exposure of cold inside the cabinet, and the heat outside the cabinet is heated inside the cabinet. A plurality of bag-like portions and fins are arranged so as to suppress intrusion into the body. The present invention improves the heat insulation effect by providing a heat insulation air layer by providing a magnet lower bag-like portion 134 in the lower portion of the magnet holding portion 131 that is in the flexible portion 133 that guarantees stretchability and contains a magnet. I was able to do that. Also, a magnet lower bag-like portion 134 straddling the magnet holding portion 131 and the magnet horizontal bag-like portion 135 below the magnet holding portion 131, and a magnet horizontal bag-like portion on the lateral side of the magnet holding portion 131 on the storage chamber side. By providing 135, a heat-insulating air layer is formed around the magnet, and the amount of intrusion heat can be reduced by suppressing heat leakage from the outside and the magnet. In addition, by providing the inner circumferential bag-like portion 136 that protrudes in the direction of the storage chamber connected to the flexible portion 133 with one connecting portion, a heat insulating air layer is formed inside the storage chamber and the movement of the gas in the chamber By suppressing heat transfer and heat conduction from the gasket 130 main body of the present invention, heat exchange inside and outside the cabinet can be suppressed and the amount of intrusion heat can be reduced. The partition 139 includes a mounting portion 132 that engages with a groove provided in the heat insulating door, and a bag-shaped portion and b-bag-shaped portion that are divided into two by a partition provided in the mounting portion 132. The thickness is smaller than the thickness of both side surfaces of the mounting portion 132 and is inclined, thereby suppressing heat conduction between the both side surfaces of the mounting portion 132, and by the a bag-shaped portion and the b bag-shaped portion. The heat insulating air layer shape can reduce the heat transfer of the amount of intrusion heat from the door side to the inside of the warehouse, and can enhance the heat insulating effect. And the part where the shape of a metal mold | die becomes thin compared with another site | part can be minimized, and stable shaping | molding is attained by suppressing the strength deterioration of a metal mold | die. In addition, the strength of the mounting portion 132 can be improved when the gasket 130 is assembled and inserted into a groove provided in the door at a factory.

  The gasket 130 includes a fin at the tip of the mounting portion 132, and two heat insulating air layers formed by the fin and the door inner 137 provided at the tip of the mounting portion when the gasket and the door are assembled. Thus, heat exchange between the door and the gasket 130 can be suppressed, heat insulation performance can be improved, and the amount of heat entering from the gasket 130 into the cabinet can be reduced.

  Further, in the a bag-like portion and the b-bag-like portion divided into two from the partition wall 139 provided in the mounting portion 132, the inside of the storage side of the b-bag-like portion on the door side close to the door inner 137. By setting the height A to be smaller than the height B on the outside of the cabinet, the heat insulating air layer formed from the partition wall 139 is matched to the position of the door and the cabinet, and heat transfer from the door side is better suppressed, and the amount of intrusion heat is reduced. Can be efficiently reduced.

  In addition, the gasket 130 is provided with grooves 140 that are heat conduction suppressing portions on both side walls of the mounting portion 132, so that the gasket 130 enters the chamber by performing a thermal edge cut into the chamber by the gasket 130 body. The amount of heat can be suppressed and the amount of power consumption can be reduced.

  As described above, in the present embodiment, the configuration of the gasket 130 is divided into two parts, the a bag-like part and the b-bag-like part divided from the partition wall 139 provided in the attaching part 132, and the attaching part 132. A fin is provided at the tip, and a groove portion 140 that is a heat conduction suppressing portion is provided on both side walls of the mounting portion 132, and the partition wall 139 has a thickness smaller than the thickness on both side surfaces of the mounting portion 132 and is inclined to be stable. Refrigerator with reduced power consumption by ensuring moldability and assembly insertability, more efficiently shielding cool air flow inside the cabinet, suppressing heat leakage outside the cabinet, reducing the amount of heat entering from the gasket 130 can do.

  As mentioned above, since the gasket of the refrigerator concerning this invention can improve heat insulation performance, it can apply to all the cooling devices provided with the heat insulation box which has a door.

DESCRIPTION OF SYMBOLS 100 Refrigerator 101 Heat insulation box 102 Outer box 103 Inner box 104 Refrigeration room 105 2nd freezer room 106 Ice making room 107 1st freezer room 108 Vegetable room 104a Refrigeration room right door 104b Refrigeration room left door 105a Second freezer room door 106a Ice making room door 107a First freezing room door 108a Vegetable room door 130 Gasket 131 Magnet holding part 132 Mounting part 133 Flexible part 134 Magnet lower bag-like part 135 Magnet side bag-like part 136 Inner circumferential side bag-like part 137 Door inner 138 Door shell 139 Bulkhead 140 Heat conduction suppressing part (groove part)

Claims (3)

A heat insulating box formed by an inner box, an outer box, and a heat insulating material filled between the inner box and the outer box, and a partition wall that divides the heat insulating box into upper and lower storage chambers in different temperature zones. And a door that can be opened and closed on the front surface of each storage chamber, and a door gasket that is provided on the door and is in close contact with the front opening of the storage chamber. In the refrigerator
The door gasket includes a first bag-like portion containing a magnet, a second bag-like portion of an attachment portion that engages with a groove provided in the heat-insulating door, and a gap between the second bag-like portion and the first bag-like portion. A third bag-like portion for ensuring the stretchability of the door gasket is provided, the second bag-like portion is divided in the front-rear direction by a partition, and the partition is inclined with respect to the opening surface of the opening. Refrigerator. 2. The refrigerator according to claim 1, wherein the partition wall is formed thinner than a sidewall of the second bag-shaped portion. The refrigerator according to claim 1 or 2, wherein a heat conduction suppressing portion is provided on a side wall of the second bag-like portion.

Images