JP2005249334A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an industrial large refrigerator with cool air circulating ducts on the six inner faces including the back side of a door for performing efficient and uniform cooling operation while preventing the leakage of cool air with close contact between the duct on the back side of the door and the opening peripheral face of a refrigerating chamber. <P>SOLUTION: The industrial large refrigerator comprises ducts 13, 13b formed on the top and bottom and the right and left of the refrigerator 10, on the inner face of a back portion and on the back face of the door 14. In the state of closing the door 4, the duct 13b provided on the back side of the door 14 is communicated with the duct 13 provided on the top and bottom and the right and left of the refrigerator 10 and on the inner face of the back portion. Cool air generated by an evaporator 11 is forcibly circulated in the ducts 13, 13b to cool the refrigerator. The face of the duct 13b provided on the back face of the door 14, directed to the refrigerating chamber, has close contact with the peripheral face of an opening portion of the refrigerating chamber 20 via a coil spring 17h and a packing 18. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a large-sized commercial refrigerator with a forced air circulation type in which an air curtain acts at an opening when a door is opened and cools from six surfaces inside the cabinet including the back surface of the door when the door is closed.

  As shown in FIG. 3 in Japanese Patent Application No. 2003-11224, the present inventor stated that “the evaporator 11 and the fan 12 are installed in the upper back of the refrigerator 10, and the cold air generated in the evaporator 11 is in the top, left, right, and rear surfaces. The duct 13b is forcibly circulated through the duct 13 disposed on the rear side of the door 14. A duct 13b is also integrally provided on the back side of the door 14, and the communication port 15 is provided at a portion where the top, left and right ducts 13 and the duct 13b on the back side of the door 14 are in contact. When the door is opened and the door is closed, the cold air flows also to the duct 13 b on the back side of the door 14, and a drum-type blower 16 is installed in the communication port 15 on the main body side, forcibly on the back side of the door 14. A large refrigerator for business use has been proposed, in which cold air is fed into the provided duct 13b and the door 14 is opened to act as an air curtain.

  According to the above proposal, when the refrigerator door is opened, an air curtain acts on the opening of the refrigerator compartment, and when the door is closed, the cold air circulates through the cold air circulation ducts formed on the six surfaces inside the refrigerator. In this way, the refrigerator compartment is cooled (cooled) efficiently and evenly.

  However, in a later study, there is a slight gap between the opening of the refrigerator compartment and the surface of the duct provided on the back side of the door, and the cold air leaking from the gap is turbulent in the refrigerator compartment. It turned out that it became the cause which obstructed uniform cooling.

  In view of the above situation, the present invention makes the circulation of cool air smooth and does not leak so that the peripheral surface of the opening of the refrigerator compartment and the surface of the duct provided on the back side of the door are in close contact with each other. It is an object of the present invention to provide a large refrigerator for business that can efficiently and evenly cool the refrigerator compartment.

  In order to solve the above-mentioned problems, the present invention forms a duct on the top and bottom of the refrigerator, the inner surface of the left and right sides and the back of the door, and the duct provided on the back of the door with the door closed and the top and bottom of the refrigerator In a large commercial refrigerator that cools the inside of the refrigerator while forcibly circulating the cool air generated in the evaporator so that the duct provided on the inner surface of the back and the duct is in communication with the back of the door It is constructed so that the surface of the provided duct facing the refrigerator compartment and the opening peripheral surface of the refrigerator compartment are in close contact with each other. Specifically, the duct provided on the rear surface of the door faces the interior of the refrigerator. A member that constitutes the floating structure between the member that constitutes the side and the member that constitutes the other part, and the member that constitutes the side facing the inside of the cabinet is like a spring on the peripheral surface of the opening of the refrigerator compartment If necessary, the spring The force to be adjusted, in which is interposed a packing between the surface facing the inside of the compartment of the duct and the opening peripheral surface of the refrigerating compartment.

  By configuring as described above, there is no gap in the portion where the opening peripheral surface of the refrigerator compartment and the duct on the back side of the door face each other, and the cold air forcibly circulating in the duct circulates smoothly without leaking, and the refrigerator compartment Efficient and even cooling can be achieved, and when the door is opened, an air curtain acts on the opening of the refrigerating chamber to prevent the temperature in the refrigerating chamber from rising.

  Next, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, a compressor P that compresses a refrigerant, a condenser C that exchanges heat between the compressed refrigerant, and a fan motor F that air-cools the condenser C are installed on the top of the refrigerator 10.

  An evaporator 11 and a fan 12 for forcibly circulating cool air are attached to the upper part of the refrigerator, and a duct 13 for circulating cool air is formed on the top, left, right, and back of the refrigerator, and a duct 13b is also provided on the back side of the door 14. It is provided and cold air circulates through the entire inner surface of the refrigerator compartment.

  The inside of the commercial large refrigerator 10 is partitioned into several refrigerator compartments 20, doors 14 are attached to the refrigerator compartments 20, and a duct 13 b for circulating cold air is formed on the back side of the doors 14. In the closed state, it is in communication with the duct 13 on the inner surface of the refrigerator compartment through the communication port 15.

  A drum-type blower 16 is provided on the upper side of the door 14 so that the cold air circulating through the duct 13 on the inner surface of the refrigerator compartment is forcedly circulated through the duct 13b on the rear side of the door 14 and when the door 14 is opened, An air curtain is formed in the opening.

  The duct 13b on the back side of the door 14 is provided with urging means 17 for bringing the surface facing the inside of the refrigerator into close contact with the peripheral surface of the opening of the refrigerator compartment 20, and this urging means 17 is attached to the back side of the door 14 as a mounting member. A flanged sleeve 17c and an inner sleeve 17d support member 17b are mounted on the mounting member 17a. The flanged sleeve 17c is fixed to the support member 17b, and the inner sleeve 17d slides within the flanged sleeve 17c. It is possible to move.

  A female screw support member 17e is attached to a member 13b 'facing the refrigerator compartment 20 of the duct 13b on the back side of the door 14, and the tip of a screw screw 17g penetrating the inner sleeve 17d is screwed into the female screw 17f. A coil spring 17h is fitted on the outside of 17d, and the member 13b 'facing the refrigerator compartment 20 of the duct 13b is urged toward the opening peripheral surface 19 of the refrigerator compartment 20. The urging force of the coil spring 17h can be adjusted by turning and adjusting the screw.

  A packing 18 made of urethane foam resin, for example, is attached to the periphery of the member 13b 'facing the interior of the duct 13b corresponding to the opening peripheral surface 19 of the refrigerator compartment 20, and when the door 14 is closed, the refrigerator compartment 20 The close contact between the peripheral surface 19 of the opening portion and the member 13b 'facing the refrigerator compartment 20 of the duct 13b is improved, and the cold air circulating in the ducts 13 and 13b is prevented from leaking.

  In addition, an adjustable vent hole H for cooling the refrigerator compartment 20 evenly is formed on the surface of each duct 13, 13 b facing the inside of the cabinet.

  As described above, the large refrigerator for business use according to the present invention is provided with ducts on the top, left, right and back of the refrigerator compartment and the back of the door, and forced air is circulated on all six sides to efficiently circulate the refrigerator compartment. Furthermore, when the door is closed, the communication between the duct on the inside of the refrigeration room and the duct provided on the back side of the door is improved and the leakage of cold air is prevented. Even cooling is possible, and when the door is opened, an air curtain acts at the opening of the refrigerator compartment to prevent the temperature of the refrigerator compartment from rising.

Vertical sectional view of the refrigerator according to the present invention Explanatory drawing of the urging means for the duct on the back side of the door (a) Before closing the door (b) Showing the door closed Vertical section of a refrigerator according to the prior art

Explanation of symbols

10 Refrigerator 11 Evaporator 12 Fan 13 Duct (on main body side)
13b Duct (on the back of the door)
14 Door 15 Communication port 16 Drum-type blower 17 Biasing means 17a Mounting member 17b Support member 17c Barbed sleeve 17d Inner sleeve 17e Female screw support member 17f Female screw 17g Screw screw 17h Coil spring 18 Packing 19 Opening peripheral surface 20 Refrigeration chamber C Condenser F Fan motor H Air vent P Compressor

Claims (5)

  A duct is formed in the top and bottom of the refrigerator, the inner surfaces of the left and right sides and the back and the back of the door, and the duct provided on the back of the door in a closed state communicates with the ducts provided on the top and bottom of the refrigerator, the left and right and the inner surfaces of the back. In a large-sized commercial refrigerator that cools the interior of the refrigerator while forcibly circulating the cold air generated in the evaporator, the surface of the duct provided on the back of the door facing the refrigerator compartment and refrigerated A large refrigerator for business use, characterized in that the peripheral surface of the opening of the room is in close contact.   The member constituting the side facing the interior of the duct provided on the back surface of the door constitutes a floating structure between the member and the member constituting the other part, and constitutes the side facing the interior. The commercial large-sized refrigerator according to claim 1, wherein the member is urged toward the peripheral surface of the opening of the refrigerator compartment.   The large refrigerator for business use according to claim 1 or 2, wherein a spring is interposed between a member constituting the side facing the interior and a member constituting another portion.   The commercial large-sized refrigerator according to any one of claims 1 to 3, wherein the biasing force of the spring is adjustable.   5. The large business use according to claim 1, wherein a packing is interposed between a surface of the duct provided on the back surface of the door that faces the inside of the duct and a peripheral surface of the opening of the refrigerator compartment. Shape refrigerator.

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