JPH073307B2 - Fresh-walled wall condenser - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an improvement of a wall condenser of a refrigerating cycle used for cooling a storage for storing fresh food and the like.

2. Description of the Related Art As a structure of a condenser used in a conventional storage cabinet, a condenser tube serving as a condenser is arranged on a back surface portion, a ceiling portion and both side surfaces of the storage cabinet, and the condensation tube is cooled by natural convection. Many types are known (Jitsuko Sho 53-37325)
No., No. 57-58888 and No. 59-16978.

However, since the conventional storage is a natural heat dissipation method by natural convection, the efficiency of heat exchange is generally low,
There is an inconvenience that it is difficult to sufficiently condense the refrigerant.

Therefore, the present invention has been made in view of the above-mentioned drawbacks of the prior art, and an object thereof is to provide a structure capable of sufficiently condensing even in a wall type condenser system.

Means for Solving the Problems That is, according to the present invention, a condenser pipe is fixed to a heat insulating material side of a floor plate and a rear plate of a casing made of a heat insulating material forming a storage cabinet with a tape such as aluminum having excellent heat conductivity. In addition, a blower for taking in air from the bottom of the storage and a compressor of the refrigeration cycle are installed below the floor plate of the storage, and the air blown from the blower flows along the floor plate and the back plate. This object is achieved by configuring as described above.

Operation In the structure of the condenser of the storage according to the present invention, the air suctioned downward from the storage is first blown to the floor plate constituting the casing by the blowing action of the blower. Then, the condensing pipe is fixed to the floor plate via the tape, so that the heat of the condensing pipe is indirectly taken by air due to the heat conduction effect. Next, the air that has passed through the floor plate flows along the back plate, at which time the heat of the condenser tube is indirectly taken by the air.

Therefore, since the refrigerant of the refrigeration cycle is sufficiently condensed by the wall type condenser, the inside of the storage can be cooled to a predetermined temperature.

EXAMPLES The present invention will be described in detail below with reference to the examples shown in the drawings.

In FIG. 1, reference numeral 1 is a storage cabinet installed close to a wall surface 2 in a room, and the storage cabinet 1 is formed by a ceiling plate 3, a back plate 4, a floor plate 5 and both side plates and has a foam body ( A box-shaped casing A having foamed urethane foam, styrofoam, etc.) 6 and a door body B insulated by a heat insulating material that abuts an opening provided in the front part of the casing A. A storage box 8 made of an excellent material having excellent thermal conductivity is installed at a predetermined space from the ceiling, back surface, bottom surface, and both side surfaces of the casing. An evaporator 10 and a blower fan are installed. Then, the air cooled by the evaporator 10 is placed in the storage box 8
The outer circumference of the storage box 8 is made to flow, and the inside of the storage box 8 is indirectly cooled.

Below the casing A, a machine room 12 is provided.
A compressor 14 of the refrigeration cycle and the like, and a blower 18 that takes in air from a suction port 16 below the machine room 12 are installed inside the machine 12. The machine room 12 has a blow-out port 20 whose tip is narrowed like a nozzle toward the back plate 4 of the casing A. Therefore, after the air is blown to the floor board 5,
It comes into contact with 14 etc. and is blown out toward the back plate 4.

As shown in FIG. 2 and FIG. 3, the inner surfaces of the back plate 4 and the floor plate 5 on the side of the heat insulating material are heated so that the space between the condensing pipes 22 spreads from the floor plate 5 to the back plate 4. It is fixed by an aluminum tape 24 having excellent conductivity.

Further, the flow of the refrigerant is also set so as to flow from the floor plate 5 side to the back plate 4 side.

Therefore, as shown in FIG. 4, the refrigerating cycle of the storage according to the present embodiment includes a compressor 14, a condenser pipe 22, an expansion valve 26, and an evaporator 1.
The condensing pipe 22 is condensed by the blowing action of the blower 18 instead of the conventional natural convection.

In the configuration described above, the conventional wall type condenser performs natural cooling by the ventilation effect by natural convection, but in the device according to the present embodiment, the heat transmission coefficient is increased by the ventilation effect by the blower 18. Because I am configuring
The condensation efficiency of the condenser tube 22 is significantly increased.

In addition, the flow of air by the blower 18 is controlled by the floor plate 5 and the back plate 4.
And because it is configured to flow from the bottom to the top, the ventilation effect is improved in combination with natural convection.

Further, when the condenser is installed, if the heat insulating material 6 such as urethane foam is foamed in the casing after the condensation pipe 22 is fixed to the back plate 4 and the floor plate 5 with the tape 24, the pressing action of the urethane foam. As a result, the condensing pipe 22 comes into close contact with the plates 4 and 5, and the heat exchange action with the plate material is further improved.

If an exhaust port is provided near the ceiling of the storage, the warm air rising from the floor plate 4 side will not stay near the wall of the storage and will be exhausted, preventing the indoor temperature from rising. You can

Further, the condenser of the present invention can of course use a cold roll box.

Effect As described above, in the condenser according to the present invention, not only the natural convection but also the forced ventilation method by the blower is adopted. Therefore, it is possible to remarkably improve the condensation efficiency, which was insufficient in the conventional wall type condenser. Therefore, it can be used as a condenser for a relatively large capacity refrigeration cycle.

[Brief description of drawings]

1 to 4 show an embodiment of the apparatus according to the present invention, and FIG. 1 is a longitudinal sectional view showing a state in which the apparatus is installed,
FIG. 2 is a cross-sectional view showing a state in which a condenser pipe is attached to a plate material, FIG. 3 is a perspective view showing a state in which a condenser pipe is attached to a back plate and a floor plate, and FIG. 4 shows a connection relationship of a refrigeration cycle. It is a circuit diagram. 1 ... Storage, 2 ... Wall, 3 ... Ceiling panel 4 ... Back panel, 5 ... Floor panel, 6 ... Insulation material 8 ... Storage box, 10 ... Evaporator, 12 ... Machine room 14 ... Compressor, 16 ... Suction port, 18 ... Blower 20 ... Exhaust port, 22 ... Condensing tube, 24 ... Tape

Claims (1)

[Claims] 1. A refrigeration cycle condenser in a perishable storage compartment defined by a casing made of a heat insulating material and having an opening at the front, and a door body made of a heat insulating material in contact with the opening of the casing. Condensation pipe is fixed to the heat insulating material side of the back plate and floor plate constituting the casing with a tape having good thermal conductivity, and comprises a fan and a compressor of a refrigeration cycle installed below the floor plate, A wall condenser for a fresh storage, characterized in that the wind of the blower flows in order of a floor plate and a back plate.