JPS604776A - Unit chamber of low temperature box - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a unit room of a low-temperature refrigerator, which is provided in the lower part of the refrigerator, and in which a condenser, a compressor, a blower, a drain tray, etc. are arranged.

(B) Prior Art Conventionally, a refrigeration system has a storage room for storing objects to be cooled, and a unit room in which a compressor, a condenser, a blower, a drain tray, etc. are installed is formed below the storage room. In a low-temperature storage such as a case, outside air sucked in by a blower passes through a condenser, heat exchanges, and becomes warm air. The air blows onto the receiver tank, which is piped to the tank.

Here, when the temperature of the suction pipe and the receiver tank rises due to warm air, a flash gas is generated in which the liquid refrigerant vaporizes, resulting in a disadvantage that the cooling efficiency decreases. or,
The warm air passing through the blower is diffused and only a portion of the warm air is blown onto the compressor, so the cooling effect of the warm air on the compressor is extremely small.This cooling effect prevents the compressor winding temperature from rising. It is not possible to prevent oil deterioration or increase volumetric efficiency. Furthermore, the warm air that has been heat exchanged in the condenser and compressor passes above the drain pan and is discharged outside the unit, increasing the heat load on supermarkets and other places where refrigerated showcases are installed, and reducing air conditioning equipment. This led to an increase in operating costs. In addition, an electric heater or the like for forcibly evaporating the defrosting water is installed in a drain tray that receives defrosting water generated during sheathing of a cooler or the like disposed in the low-temperature storage, and the electric heater is always on. Because electricity is applied to the refrigerator, the operating cost of the low-temperature refrigerator increases.

(c) Purpose of the Invention The present invention aims to significantly increase the evaporation efficiency of the water removed from the cooler etc. of a low-temperature refrigerator and is received in a drain pan, and also to significantly reduce the amount of waste heat to the outside. The purpose of the present invention is to reduce the operating cost of air conditioning equipment, increase heat exchange efficiency in the compressor, and prevent flash gas generation in the suction pipe and receiver tank.

B) Structure of the Invention The present invention is provided at the lower part of a low-temperature refrigerator, and includes a drain tray, a compressor,
In a unit room where a condenser, blower, etc. are installed, warm air exchanged with the condenser and blown out from the blower passes around the compressor, and most of the warm air flows onto the drain tray. In addition to providing a partition plate so that it flows,
An evaporation member is installed in the drain pan, extends upward, meandering along the flow direction of the warm air, and sucks up and vaporizes the defrosting water from the drain pan, thereby improving the cooling effect in the compressor and supplying warm air to the section pipe. This prevents the generation of flash gas due to the blowing of the air, and also blows warm air onto the evaporation cloth, improving the evaporation efficiency of the defrosting water from the drain 11.11, and preventing the blowing of exhaust heat from the unit room. The aim is to reduce this.

(e) Examples Examples of the present invention will be described below with reference to FIGS. 1 to 4.

(1) is a low-temperature storage such as a refrigerated showcase, and the upper part is divided into a storage compartment (3) for storing objects to be cooled, the front opening of which is closed by a transparent door (2), and the lower part is divided. A unit room (4) is formed. An outside air inlet (6) provided with a slit-shaped door (5) that can be freely opened and closed is formed on the front side of the unit chamber (4), and an air outlet (7) is formed on the back side. The unit board (8) inside the unit room (4) is located behind the outside air intake port (6).
A condenser (9) is installed behind the condenser (9), and an axial blower a is provided behind the condenser (9) for sucking outside air through the outside air suction port (6) and passing it through the condenser. a
υ is a compressor that constitutes a refrigerant circuit together with a condenser (9),
It is installed diagonally behind the blower Ql and is connected to the suction pipe. Note that (9A) C is a pipe connecting the condenser (8) and the compressor I, and (9B) is a pipe connecting the condenser (9) and a cooler (not shown).

0 is a partition plate according to the present invention formed of, for example, a metal plate, and is attached to the unit board (8) with screws (13A) or the like. As shown by the arrow in Figure 3 of this partition plate α3 & M, the warm air whose temperature has increased through heat exchange in the condenser (9) is blown backward from the blower, and then the compressor Q.
The amount of warm air blown onto the suction pipe (12) is greatly reduced as it is guided upwards to the drain pan with lateral pressure on the unit board (8), and most of the warm air is directed over the drain pan I (12). The direction from the vicinity of the compressor aυ to the drain plate α4 is installed so that , as shown in FIG.
Reference numeral 9 is composed of a framework tm formed by meandering metal rod-shaped members, for example, and an evaporation cloth (17) made of glass fiber or the like that is wrapped around this framework Qe and sucks up defrosting water from along the drain plate α. section (old... and each meandering section (
The bottom surface of the drain plate α4 is made up of parallel surfaces 09, which connect 1 second approximately parallel to each other, and the parallel surfaces a1 are positioned parallel to the flow direction of warm air guided by the partition plate 0. It is installed extending upward from α4. In addition, partition plate 03
) and the total height of the evaporating member a9 is formed to be slightly lower than the total height of the unit chamber (4) so that it can be taken out from the unit chamber (4).

Here, as shown by the arrow in Fig. 3, heat is exchanged in the evaporator (9), passes through the blower, and further heat is taken from the compressor (compressor Ql by blowing on 10), causing the temperature to rise. The warm air with increased enthalpy is guided to the partition plate 03 and flows approximately parallel to the evaporator member 0, so that the warm air efficiently exchanges heat with the surface of the evaporator cloth 0η and efficiently removes moisture from the surface of the evaporator cloth. The evaporation efficiency of the defrosting water can be greatly improved, and the warm air is cooled by the heat of vaporization of the defrosting water and becomes a gas with low enthalpy before being discharged to the outside of the unit room (4). Therefore, a drain pan (14
There is no need to install a heater in the room 1, and since the unit room 4 discharges a gas with a low enthalpy that is approximately equal to room temperature, the air conditioning system in the room where the low-temperature storage 1 is installed is eliminated. It is possible to reduce the heat load of the system, and it is possible to reduce operating costs.

In addition, the warm air that has passed through the condenser (9) and the blower (10) is blown onto the compressor (11), and the amount of air blown onto the suction pipe (121) is greatly reduced by the partition plate 0 (6), resulting in less compression. By cooling the compressor 0υ, it is possible to prevent compressor winding temperature rise and oil deterioration, and increase volumetric efficiency.
In addition, it can prevent flash gas from being generated in the Zakujo pipe (1) and increase the cooling capacity.

FIG. 4 is a top view of the unit chamber shown as another embodiment.
Components with the same reference numerals as in FIG. 3 are the same, and detailed explanation will be omitted. (A) is a receiver tank installed at the rear side of the blower in the unit room (4), and is connected to the condenser (9) by piping (
9C) via an expansion valve (9D).

Also, compression 41 (11) is air blower 0 [rear unit room (
4) It is installed approximately in the middle of the day. 0 Dark Ma For example, in the partition plate according to the present invention formed by bending a metal plate, this partition plate α (to)
As shown in Figure 4, the receiver tank (A), suction pipe (121) is installed to separate the compressor 0υ, and the blower α [. is guided by the partition plate 0 floor as shown by the arrow, passes around the compressor (11), and then passes through the evaporator member 0
Flows into warmth. Therefore, the compressor α1) can be efficiently cooled by the warm air blown out from the blower 00), and the same effects as in the above embodiments, such as prevention of a rise in the temperature of the compressor windings, can be obtained. In addition, all of the warm air is guided onto the drain plate Q4) by the partition plate α, which prevents the warm air from blowing against the drain pipe α2 and the receiver tank handle, and prevents flash gas from being generated and reducing cooling efficiency. can. Furthermore, the warm air heated by the condenser (9) and the compressor αυ and having a high enthalpy exchanges heat efficiently with the same surface of the evaporator material 0 powder as in the above embodiment, and efficiently absorbs water from the surface of the evaporator cloth. , and the evaporation efficiency of defrosting water can be greatly improved. In addition, the warm air is cooled and becomes a gas with low enthalpy before being discharged outside the unit room (4), resulting in the same effect as in the above embodiment. Further, in the above two embodiments, the evaporation member 09 was placed on the drain tray (14), but the same effect can be obtained even if it is placed on the drain tray (14).

(F) Effects of the Invention The present invention is provided in the lower part of a low-temperature refrigerator, and in a unit room in which a drain tray, a compressor to which a suction pipe is installed, a condenser, a blower, etc. A partition plate is installed so that the warm air exchanged with the condenser and blown out from the blower passes around the compressor, and most of the warm air flows over the drain pan,
Since the drain blood pressure is a unit room of a low-temperature refrigerator in which an evaporation member is installed in the drain pan, extends upward, meandering along the flow direction of the warm air, and sucks up and vaporizes defrosting water from the drain pan, The blown warm air blows against the compressor and cools the compressor, preventing a rise in the compressor winding temperature and oil deterioration, and increasing volumetric efficiency.Also, the partition plate allows the warm air to flow through the suction pipe. The cooling capacity can be increased by preventing flash gas from being generated in the suction pipe, and the warm air heated by the condenser and compressor is directed to the evaporator by the partition plate. Since the warm air is guided and flows approximately parallel to the evaporation member, the warm air exchanges heat efficiently with the surface of the evaporation member, and also efficiently removes water from the surface and greatly improves the evaporation efficiency of defrosting water. It is possible to eliminate the evaporation heater installed in the dish, which reduces the operating cost of the low-temperature refrigerator.Also, since the gas cooled by the evaporator is discharged outside the unit, the installation of the low-temperature refrigerator is possible. The heat load on indoor air conditioning equipment can be reduced, and the operating cost of the air conditioning equipment can also be reduced.

[Brief explanation of the drawing]

1 to 4 show an embodiment of the present invention, in which FIG. 1 is a perspective view of a low-temperature refrigerator, FIG. 2 is a schematic perspective view of an evaporation member, and FIG.
The figure is a top view of the unit chamber, and FIG. 4 is a top view of the unit chamber shown as another embodiment. (1)...Low temperature storage, (4)...Unit room, (
6)...Outside air inlet, (7)...Outlet, (9)
...Condenser, 00)...Blower, ■)...Compressor, Oz...Suction pipe, (13), 03
1... Partition plate, 04)... Drain plate, (14)
...Bottom surface, 0■...Evaporation member.

Claims (1)

[Claims] 1. Provided at the bottom of a low-temperature warehouse that stores and stores objects to be cooled.
In a unit room in which at least a drain dish, a compressor to which a suction pipe is installed, a condenser connected to the compressor, and a blower for passing outside air to the condenser are arranged. A partition plate is attached to the air blower through which heat is exchanged through the air blower, and a partition plate is installed on the drain plate, extends upward, meandering along the flow direction of the warm air, and sucks up defrosting water from the drain plate and vaporizes it. A unit room of a low-temperature storage, characterized by comprising an evaporation member.