JP4118210B2 - refrigerator - Google Patents

Description

  The present invention relates to a refrigerator including a damper device that opens and closes a cold air supply passage.

  The freezing room and the refrigerating room are partitioned by a partition wall so that the refrigerating room is located at the upper part, and the cool air cooled by the cooler installed at the rear of the freezing room is circulated to the freezing room and the refrigerating room by a blower In the partition wall, separate molded heat insulating materials such as foamed polystyrene are stored in the front and rear portions, respectively, and a discharge passage for guiding cold air to the refrigerator compartment is formed in the rear formed heat insulating material. Has a refrigerator in which a damper device is housed (see, for example, Patent Document 1).

The damper device is composed of a rectangular case whose upper and lower surfaces are open, a damper that is rotatably provided in the case, and a motor that rotationally drives the damper. It adjusts the amount of cold air that circulates. In addition, the partition wall is formed integrally with the inner box of the refrigerator main body, and the molded heat insulating material at the rear part in the partition wall is a horizontal part connected to the molded heat insulating material at the front part and a discharge led to the refrigerator compartment. This is a built-in structure in which the vertical portion is formed in the rear wall of the refrigerator body. The case of the damper device housed in the discharge passage has a configuration in which a flange extending outward is formed on the periphery of the upper opening, and this flange is placed on the upper peripheral edge of the discharge passage.
Japanese Patent Laid-Open No. 10-160322 (pages 2 to 3, FIGS. 1 to 4)

  As described above, the invention of Patent Document 1 has a structure in which the partition wall is formed integrally with the inner box of the refrigerator main body, and the built-in structure in which the rear portion of the molded heat insulating material in the rear portion of the partition wall enters the rear wall of the refrigerator main body. Therefore, the sealing structure in which the polyurethane foam heat insulating material filled in the refrigerator body does not leak becomes complicated. In addition, the damper device housed in the discharge passage has a configuration in which the upper flange of the case is placed on the upper peripheral edge of the discharge passage with the case inserted into the discharge passage. Adhesive tape application work to fix to the material is necessary.

  In view of such a point, the present invention has a heat insulating partition wall that separates the freezer compartment and the refrigerator compartment in order to simplify the configuration of the refrigerator body, and simplifies the installation of the damper device. Therefore, the present invention provides a structure that can easily secure a seal between the heat insulating partition wall and the damper device.

In the first invention, the refrigerator compartment and the refrigerator are placed so that the refrigerator compartment is located in the upper part of the refrigerator body which is a heat insulating structure in which the foam insulation is filled between the outer box (outer wall plate) and the inner box (inner wall plate). The room is partitioned by a heat insulating partition wall, and the cool air cooled by the cooler installed at the rear of the freezer compartment is circulated to the freezer compartment and the refrigerator compartment by a blower, and the refrigerator compartment is based on the temperature of the refrigerator compartment In the refrigerator provided with a damper device that opens and closes the cold air supply passage in the heat insulating partition wall that communicates with the heat insulating partition wall , the heat insulating partition wall has a heat insulating structure in which a heat insulating material is sandwiched between an upper plate and a lower plate, and the rear portion is vertically the upper and lower through cool air supply passage through formed in the damper device, the upper and lower through cool air supply passage surrounds the operating plate and the operation plate for opening and closing the upper and lower through the cool air supply passage by an electric mechanism and the electric mechanism one The passage walls that make up the part Wherein the heat insulating partition wall provided with a locking claw which the channel walls are formed on the upper end of the peripheral portion of the insertion portion and the insertion portion formed on the heat insulating material to be inserted and held, the insertion portion is the adiabatic A step portion at an intermediate portion of the material, and when the passage wall is inserted into the insertion portion from above, the locking claw is pushed outward by the passage wall, and a lower end portion of the passage wall is the insertion portion The damper device is held in the heat insulating partition wall so that the locking claw is locked to the upper end portion of the passage wall by elastic return when it is pressed directly or through a sealing material. In this held state, the heat insulating partition wall is configured to be incorporated into the refrigerator main body from the front side in front and rear grooves formed on the left and right sides formed in the inner box (inner wall plate) .

According to a second invention, in the first invention, the heat insulating partition wall has a heat insulating structure in which a heat insulating material is sandwiched between an upper plate and a lower plate, and the locking claw protrudes upward from the upper plate. The insertion portion is formed with a step portion opposed to the lower portion of the inserted passage wall, and the locking claw is placed on the upper end of the passage wall with the passage wall inserted into the insertion portion. While elastically locking, the lower end portion of the passage wall is pressed against the step portion directly or through a sealing material.

  In order to simplify the structure of the refrigerator main body, the heat insulating partition wall that separates the freezer compartment and the refrigerator compartment is configured separately from the refrigerator main body, and the heat insulating partition wall to which the damper device is attached in advance is provided. As a result, the assembly can be simplified. Further, since the damper claw of the heat insulating partition wall is elastically locked to the passage wall, the damper device is held by the heat insulating partition wall, so that the damper device can be easily incorporated into the heat insulating partition wall, and the heat insulating partition The damper device can be stably held on the wall. Furthermore, the elastic engagement between the locking claw and the passage wall ensures a seal between the passage wall and the insertion portion formed on the heat insulating partition wall, thereby simplifying the sealing work.

  The invention according to claim 2 is that the lower end of the passage wall is directly or via a sealing material by the locking claw being elastically locked to the upper end of the passage wall with the passage wall being inserted into the insertion portion. Therefore, the damper device can be easily assembled and the damper device can be stably held, and the seal between the passage wall and the heat insulating partition wall can be secured, and stable cold air circulation and temperature control can be achieved. can get.

  The present invention inserts a damper device for controlling the amount of cold air circulated into the refrigerator compartment into the insulating partition wall that partitions the freezer compartment and the refrigerator compartment, and elastically engages the damper device with the locking claws formed on the insulating partition wall. By doing so, the damper device is held on the heat insulating partition wall, and the seal between the damper device and the heat insulating partition wall is achieved.

  Next, an embodiment of the present invention will be described. 1 is a longitudinal side view of the refrigerator of the present invention, FIG. 2 is an explanatory view of the refrigerator main body of the present invention viewed from the front, FIG. 3 is an explanatory view of the structure of the mounting portion of the damper device of the present invention, and FIG. It is a disassembled perspective view of an attachment part.

  The refrigerator 1 according to the first embodiment has a configuration in which the inside of the main body 2 having a full opening is partitioned to form a plurality of storage chambers, and the front surfaces of these storage chambers can be opened and closed by doors. The refrigerator main body 2 has a heat insulating structure in which a foam heat insulating material 2C is filled between an outer box (outer wall plate) 2A and an inner box (inner wall plate) 2B. In the refrigerator main body 2, a refrigerator compartment 3, a freezer compartment 5, and a vegetable compartment 4 are partitioned and provided from above.

  The front opening of the refrigerator compartment 3 is opened and closed by a revolving refrigerator door 10 that is rotated laterally by a hinge device on one side of the refrigerator body 2. The front opening of the vegetable compartment 4 is blocked by a pull-out door 11 that is drawn forward together with a vegetable container 15 supported so as to be able to be pulled out in the front-rear direction by a support device 18 using left and right rails and rollers provided in the vegetable compartment 4. Yes. The freezer compartment 5 is closed by a door 12, but, like the vegetable compartment 4, a container 16 that is supported so as to be able to be pulled out in the front-rear direction with respect to the left and right rails provided in the freezer compartment is drawn forward together with the door 12. It may be configured to be a drawer type.

  20 is a refrigerant compressor for the refrigeration cycle, and 21 is a refrigerant condenser for the refrigeration cycle. Reference numeral 22 denotes an evaporating dish for evaporating defrosted water, which will be described later, by the heat of the condenser 21. The evaporating dish 22 is placed on the condenser 21 and can be pulled out from the lower front of the refrigerator body 2. The compressor 20, the condenser 21, and the evaporating dish 22 are installed in a machine room 23 provided in the lower part of the refrigerator body 2. Reference numeral 24 denotes a refrigerant evaporator (cooler) installed in a cooler chamber 26 formed on the back surface of the freezer compartment 5. A blower 25 circulates the cold air cooled by the evaporator (cooler) 24 to the freezer compartment 5, the refrigerator compartment 3, and the vegetable compartment 4. Reference numeral 27 denotes a glass tube heater for defrosting the evaporator (cooler) 24. The defrosted water in the evaporator (cooler) 24 is guided to the evaporating dish 22 through the drain pipe and is evaporated there.

  The refrigerating chamber 3 positioned at the upper part and the freezing chamber 5 positioned at the lower part thereof are partitioned by a heat insulating partition wall 28, and the heat insulating partition wall 28 is composed of an injection molded synthetic resin upper plate 29 and an injection molded synthetic resin. A heat insulating structure in which a heat insulating material 31 such as styrofoam previously formed into a predetermined shape is sandwiched between the lower plate 30 and the lower plate 30 is formed. Such a heat insulating partition wall 28 is configured to be inserted and attached from the front opening of the refrigerator main body 2 to the front and rear grooves formed in the inner box (inner wall plate) 2B on both the left and right sides of the refrigerator main body 2.

  On the back side of the refrigerator compartment 3, a cold air supply passage 35 is formed in the vertical direction. Reference numeral 32 denotes a back wall of the refrigerator compartment 3, which is a combination of a synthetic resin back plate 33 and a heat insulating material 34 such as polystyrene foam attached to the back side thereof. The back wall 32 of the refrigerator compartment 3 is installed in parallel with the back wall of the refrigerator main body 2 so that the heat insulating material 34 abuts against the inner box (inner wall plate) 2B of the back wall of the refrigerator main body 2. A cold air duct portion 34 </ b> A that extends in the vertical direction and is recessed in 34 forms a cold air supply passage 35.

  In the rear part of the heat insulating partition wall 28, a cold air supply passage 36 penetrating up and down the heat insulating partition wall 28 is formed, and the cold air supply passage 36 is an introduction portion of the cold air supplied from the blower 25 at the lower part, and the upper part The arrangement communicates with the cold air supply passage 35. A damper device 50 is attached to the cold air supply passage 36, and the damper device 50 operates to open and close the cold air supply passage 36 by the control circuit unit based on temperature sensing of a sensor that senses the temperature of the refrigerator compartment 3. The refrigerator compartment 3 is controlled to a predetermined temperature by the opening / closing operation of the damper device 50.

  The cold air cooled by the evaporator (cooler) 24 is circulated by an air blower 25 as shown by an arrow. That is, the cold air sent from the blower 25 is supplied to the freezer compartment 5 from the cold air outlet 37 on the upper back wall of the freezer compartment 5 and returns to the cooler compartment 26 from the cold air inlet 38 on the lower back wall of the freezer compartment 5. Then, it is circulated again by the evaporator (cooler) 24. Further, the cold air sent out from the blower 25 is supplied to the cold air supply passage 35 through the cold air supply passage 36, communicates with the cold air passages 35 </ b> A formed on the left and right sides of the cold air supply passage 35, and the back wall 32 of the refrigerator compartment 3. Is supplied to the refrigerator compartment 3 from the cold air outlet 39 formed in the above.

  The cold air supplied to the refrigerating room 3 is sucked from a cold air suction port 40 formed at one lower part of the back wall 32 of the refrigerating room 3 and flows downward through a cold air passage 41 formed at the rear of the freezing room 5. It blows out to the vegetable compartment 4 from the cold air outlet 42 opened at the rear part of the compartment 4. The cold air blown into the vegetable room 4 cools the vegetables in the vegetable container 15 and returns to the cooler room 26 from the cold air inlet 43 opened at the upper part of the vegetable room 4 or at the rear part of the vegetable room 4, and again the evaporator. (Cooler) circulates cooled by 24.

  The damper device 50 includes an electric mechanism 51 housed in a case 52, an operation plate 53 that opens and closes the cold air supply passage 36 by the electric mechanism 51, and a part of the cold air supply passage 36 that surrounds the operation plate 53. A passage wall 54 is provided. The heat insulating partition wall 28 is formed with an insertion portion 55 into which the passage wall 54 is inserted and held. The insertion portion 55 is insulated so that the cold air supply passage 36 becomes a wide cold air supply passage from the middle to the upper portion. A stepped portion 56 extending upward is formed in the middle portion of the heat insulating material 31 of the partition wall 28. The upper plate 29 of the heat insulating partition wall 28 is integrally formed with a flange 57 rising upward so as to surround the upper end portion of the cold air supply passage 36.

  The damper device 50 is housed in a state of being fitted to the insertion portion 55 of the cold air supply passage 36 where the upper plate 29 of the heat insulating partition wall 28 and the heat insulating material 31 spread so as to be placed on the stepped portion 56. Specifically, the passage wall 54 is inserted into the flange 57 and the heat insulating material 31. In order to seal between the heat insulating partition wall 28 and the damper device 50, an elastic sealing material 58 is interposed between the step portion 56 and the passage wall 54. Further, an elastic sealing material can be provided at an appropriate location around the damper device 50 to perform sealing between the peripheral members.

  A plurality of locking claws 59 facing the cold air supply passage 36 are formed around the passage wall 54 and the upper end of the flange 57. When the passage wall 54 is inserted into the insertion portion 55 from above, the passage wall 54 abuts on the locking claw 59 and pushes the locking claw 59 portion of the flange 57 outward while the passage wall 54 enters the insertion portion 55, and the lower end of the passage wall 54 compresses the elastic sealing material 58. When the insertion portion 55 is entered until it is pressed by the stepped portion 56 in the state, the locking claw 59 is elastically locked to the upper end of the passage wall 54 by elastic return of the locking claw 59 portion of the flange 57, and the passage wall It stabilizes in a state where the lower end portion of 54 is pressed by the step portion 56 through the sealing material 58.

  By this elastic locking, the passage wall 54 is stably held by the insertion portion 55, and the damper device 50 is stably held by the cold air supply passage 36 of the heat insulating partition wall 28. When the heat insulating material 31 is formed of an elastic heat insulating material such as styrene foam, when the locking claw 59 is elastically locked to the upper end of the passage wall 54, this heat insulating material is compressed in the elastic sealing material 58. The stable state in which the locking claw 59 is locked to the upper end of the passage wall 54 can also be maintained by the elasticity of 31. If the lower end portion of the passage wall 54 directly presses the step portion 56 and the sealing performance of the portion is maintained, the elastic sealing material 58 can be omitted.

  Since the damper device 50 is attached to the cool air supply passage 36 portion of the heat insulating partition wall 28 in this way, the damper device 50 can be easily attached to the heat insulating partition wall 28, and the cool air of the damper device 50 and the heat insulating partition wall 28 can be used. The seal with the supply passage 36 can be maintained in a good state. For this reason, an adhesive tape and other complicated structures are not necessary for mounting the damper device 50.

  In the damper device 50, the electric mechanism 51 is operated by the control circuit unit based on the temperature sensing of the sensor that senses the temperature of the refrigerator compartment 3, and the operation plate 53 opens and closes the cold air supply passage 36. In this case, the opening / closing of the cold air supply passage 36 at the control lower limit temperature of the refrigerator compartment 3 is closed by the operating plate 53, and when the temperature of the refrigerator compartment 3 rises to the control upper limit temperature, the opening / closing of the cold air supply passage 36 is simple. In addition to the operation method, the electric mechanism 51 is a stepping motor mechanism, and the operating plate 53 is rotated by a predetermined angle by the stepping motor mechanism in accordance with the temperature of the refrigerator compartment 3, and the amount of cold air flowing through the cold air supply passage 36 is reduced. It can also be controlled to increase / decrease and maintain the refrigerator compartment 3 in a predetermined temperature range.

  As described above, when the damper device is inserted and held in the heat insulating partition wall that divides the freezer compartment and the refrigerator compartment, as long as the damper device is elastically locked to the locking claw formed in the peripheral portion of the insertion portion. The form of the refrigerator is not limited, and various modifications can be conceived without departing from the technical scope of the present invention, and various embodiments relating thereto are included.

It is a vertical side view of this invention refrigerator. Example 1 It is explanatory drawing which looked at the refrigerator main body of this invention from the front. Example 1 It is structure explanatory drawing of the attaching part of this invention damper apparatus. Example 1 It is a disassembled perspective view of this invention damper apparatus and an attaching part. Example 1

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Refrigerator 2 ... Refrigerator main body 3 ... Cold room 4 ... Vegetable room 5 ... Freezer room 24 ... Cooler 25 ... Blower 28 ... Heat insulation partition wall of freezer room and freezer room 29 .. Upper plate of heat insulation partition wall 30 .. Lower plate of heat insulation partition wall 31 .. Heat insulation material 35 .. Cold air supply passage 36 .. Cold air supply passage 50 .. Damper device 52 .. Electric mechanism 53. 54 .. Passage wall 55 .. Insertion part 56 .. Step part 57 .. Flange part 58 .. Elastic seal material 59.

Claims (2)

The freezer compartment and the refrigerator compartment are insulated partition walls so that the refrigerator compartment is located in the upper part of the refrigerator body , which is a heat insulating structure filled with foam insulation between the outer box (outer wall board) and the inner box (inner wall board). The heat-insulating partition configured to circulate cold air cooled by a cooler installed at the rear of the freezer compartment and circulate to the freezer compartment and the refrigerator compartment by a blower, and communicate with the refrigerator compartment based on the temperature of the refrigerator compartment In a refrigerator provided with a damper device for opening and closing a cold air supply passage in the wall, the heat insulating partition wall has a heat insulating structure in which a heat insulating material is sandwiched between an upper plate and a lower plate, and vertically passes through the upper and lower through cold air. The damper device includes an electric mechanism, an operating plate that opens and closes the upper and lower through cold air supply passage by the electric mechanism, and a passage wall that surrounds the operating plate and forms a part of the upper and lower through cold air supply passage Comprising the above Partition walls provided claws that the channel walls are formed on the upper end of the peripheral portion of the insertion portion and the insertion portion formed on the heat insulating material to be inserted and held, the insertion portion is an intermediate portion of the heat insulating material When the passage wall is inserted into the insertion portion from above, the locking claw is pushed outward by the passage wall, and the lower end portion of the passage wall becomes the step portion of the insertion portion. The damper device is held in the heat insulating partition wall in such a relationship that the locking claw is locked to the upper end portion of the passage wall by elastic return when it is in a pressed state directly or through a sealing material. The refrigerator is characterized in that the heat insulating partition wall is incorporated in the refrigerator main body from the front side in the front and rear direction grooves formed on the left and right sides formed in the inner box (inner wall plate) in the state where it is formed . The heat insulating partition wall has a heat insulating structure in which a heat insulating material is sandwiched between an upper plate and a lower plate, and the locking claw is formed on the upper plate so as to protrude upward, and is inserted into the insertion portion. A step portion is formed opposite to a lower portion of the passage wall, and the locking claw is elastically locked to an upper end of the passage wall in a state where the passage wall is inserted into the insertion portion, and a lower end portion of the passage wall. 2. The refrigerator according to claim 1, wherein the step is pressed against the step portion directly or through a sealing material.

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