JPS5833072A - Evaporator - 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 The present invention relates to an evaporator that is used in a cooling device used, for example, in a place with poor power supply conditions, and which is filled with a refrigerant to compensate for the deterioration of the cooling effect when the cooling operation is stopped. The present invention relates to an evaporator that is simple, easy to manufacture, and has good cooling efficiency.

Conventionally, an evaporator using this kind of regenerator has a metal plate (1) having a bent flange (1a) at the end and a flat metal plate (the joint part) as shown in FIGS. 1 and 2. (3) Form an approximately uniform space inside in contact with tS, add a new cool storage agent (4) that has a large specific heat at low temperatures, and add a metal '4[
Cooling pipe included in the refrigeration cycle +1 on the outer surface i1 of 11)
The evaporator (6) was constituted by fixing 1 in a thermally conductive manner. However, with this method, consideration must be given to the leakage of the regenerator (4) at the joint (3), or because the refrigerant pipe +51 is separate, it is difficult to ensure good heat transfer to the regenerator (4). This complicates the manufacturing process because it has to be firmly fixed in place, resulting in a decrease in work efficiency. In addition, normally, the cold storage agent (4), for example, one used near the freezing point, has a high viscosity and is sealed under high pressure when it is sealed, so a metal plate +
1) There were drawbacks such as deformation of the edges and uneven thickness.

The present invention has been made in view of the above drawbacks, and is shown in Figure 3 below.
One embodiment will be described with reference to the drawing in FIG. Note that the same symbols in the figures have the same functions. (7) is a so-called roll bond type evaporator of the present invention, in which two metal plates are coated with a release agent having a predetermined pattern, and after polymerization and rolling, openings (sHs3 and teos
Each + is used as a water inlet or a drain for pressurized water, and the part coated with the release agent is expanded to form a refrigerant passage (to) and a space for enclosing a refrigerant.The evaporator (7) is similar to the normal embodiment. Since the bent part (7&>K) is folded into a U-shape or box shape and used, the cold storage agent enclosing space 00 has a part (11!L) of the bent part (7a). It is a narrow passageway, and the other flat parts are wide.This maintains the strength when bending, and also serves to adjust the pressure when filling the cold storage agent (4). Enclose and then open
+ts'+ is sealed. Now, the refrigerant passage ■, which is narrower than the river, is formed by going around the space (II), and the refrigerant pipe included in the refrigeration cycle is connected to the opening +s+td>, completing the evaporator (1). Cool storage agent enclosure space (
The wide part of It) forms adhesive parts (ttb) of metal plates at some places in order to prevent deformation due to pressure when the cold storage agent (4) is sealed. During the cooling operation of the cooling system, the refrigerant flows from the refrigerant pipe 9 into the cold passageway, where it evaporates, and is transferred to the evaporator (1).
A cold storage action is performed by cooling the cold storage agent (4) as well as cooling the cold storage agent (4). Thereafter, after the cooling operation is stopped due to, for example, the power being cut off, the coolant is released from the cold storage agent (4) and the cooling action continues.

Here, the cold storage agent (4) used near the freezing point generally has a high viscosity, so it is pressurized to high pressure when it is sealed.In other words, high pressure is applied to the cold storage agent enclosing space (11), but this space (the river is Since it is swollen, it is hardened by work, so it is very strong against the inclusion of the cold storage agent (4) and has little dimensional deformation. The pattern of the space (It) is not limited to this embodiment, and can be modified in various ways without departing from the spirit of the present invention.

In addition to the above-described structure, the present invention has good heat conductivity since the refrigerant filling space and the refrigerant passage are formed between the same metal plates, so that the refrigerant action is efficiently performed. Further, since there is no need to perform welding or the like in the refrigerant-filled space, problems such as leakage do not occur.Furthermore, since the refrigerant passage can be formed at the same time as the refrigerant passage, the structure is simple and inexpensive. The evaporator is also strong against pressure when enclosing refrigerant, is strong, and has good production workability.

[Brief explanation of the drawing]

Each figure shows an embodiment of the present invention, and FIG. 1 is a perspective view of a conventional evaporator, and FIG. 2 is a diagram showing the structure of FIG. 3 is a perspective view of the evaporator of the present invention, and FIG. 4 is a sectional view taken along the line B-B' of FIG. 1. (4)...Cold storage agent, (D)...Roll bond type evaporator, (D)...Refrigerant passage, (■)...Cold storage agent enclosure space.

Claims (1)

[Claims] (In an evaporator in which a refrigerant passage was formed by expanding the overlapping parts of metal plates in the fall of 112, a space was formed between the metal plates in the same way as the cooling passage and independently of the refrigerant passage. and a cold storage agent sealed in the isthmus space.