JPS6060491A - Coil for circulating refrigerant - 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 [Field of Industrial Application] The present invention relates to a coil for circulating a refrigerant, and particularly to a coil for refrigerant circulation, that is, a cooling coil used as an evaporator of a refrigeration system. More specifically, the coil of the present invention is suitable for use in the evaporator of a domestic ice cream machine.

[Conventional technology]

Conventionally, refrigerators used in home ice cream making machines have been required to be small and large in capacity. If the size is given in advance, for example, to improve the refrigerating capacity of the evaporator, it is best to wind the cooling coil used in the evaporator tightly until the coils touch. However, in many cases, cooling coils are short in length to meet the space and performance requirements of the refrigeration system.
It was necessary to take the shape of a quadrilateral, especially a rectangle. However, conventionally it has not been possible to provide a coil in which the straight portions of each winding opening are substantially in contact with each other. This is because it was not possible to provide approximately U-shaped bends of very small radius at the ends of the individual straight sections. The reason for this is due to the mechanical properties of the materials such as copper, copper alloys, aluminum and aluminum alloys that form the cooling coils and the harsh conditions of use at low temperatures. An even more important reason is that the coil cannot be bent in such a way as to form a substantially cylindrical cooling basket with at least one open end around the entire circumference (by bringing the same portions of the coil into close contact with each other) as described above. This is because the.

For ice cream machines, the basket is used very effectively to cool the ice box. This is because the ice box can be easily taken out after the refrigeration cycle is completed.

[Problem to be Solved by the Invention] The problem to be solved by this invention is that the tips of two 74-igs extending in contact with each other in the longitudinal direction are connected by a flow path with an extremely small radius of curvature. An object of the present invention is to provide a refrigerant circulation coil.

[Means to solve problems]

In order to solve the above-mentioned problems, the refrigerant circulation coil of the present invention includes a plurality of refrigerant circulation coils each having a plurality of connection cavities, each of which is provided at each of a plurality of end portions which are successively stacked while contacting each other on the side surfaces.
A pair of end members are provided, and two adjacent ends of the coil element are respectively inserted into the connection cavity, so that the two coil elements communicate with each other.

[Effect]

In the refrigerant circulation coil described above, the approximately U-shaped flow path that communicates the ends of two adjacent coil elements is not formed by curving the coil, but is provided in a separate member from the coil. Due to the closed spaces, it is possible to arrange two adjacent coil elements in longitudinal contact with each other.

〔effect〕

As described above, in the refrigerant circulation coil of the present invention, the ends of the two coil elements that extend in close contact with each other can be easily connected to the coil rv by means of the end caps attached to the ends. . Therefore, since the above-mentioned coil can be formed into a small size and into various desired shapes, a refrigeration system using the coil can be formed into a small size.

〔Example〕

The refrigerant circulation coil 2 of the present invention has a large number of coil elements 1 in the shape of a loop.The coil elements 1 are in contact with each other so as to form a substantially cylindrical shape in the vertical direction in the figure. They are closely spaced and have a fluid coolant flowing through them. As shown in FIG. 1, the coil element 1 is curved so as to form a cylindrical refrigerant circulation coil (hereinafter simply referred to as a coil) 2 as a whole. A space is formed that opens in one direction (upward in the figure).

Both end portions of the coil element 1 facing each other across the gap are respectively connected to end members 3 and 4 having a substantially parallelepiped shape. The surfaces of the end members 3, 4 that are connected to the ends of the coil elements 1 are provided with a plurality of recesses or connection cavities 6 in the same number in a direction perpendicular to the surfaces.

In each of the connection spaces 5, the two
The ends of the coil elements 1 can be completely inserted. In this way, the connection cavity 5 serves to connect the two inserted coil elements.

The connection between the coil element 1 and the connection space 5 is performed via a low-temperature sealing member 7. Also, as shown in Figure 1,
Both ends I of the coil 2 formed through many connection cavities 5
A and A are arranged at positions that do not overlap in the axial direction of both end surfaces of the coil 2 so that the coil 2 can be easily connected to other parts of the refrigeration system, such as an evaporator.

A coil having a substantially cylindrical shape and open at the top like the coil of the present invention can be effectively used as an evaporator of a refrigeration device 8 shown in FIG. 4, particularly a household refrigeration device 8, such as an ice cream making device. It will be done. In this case, the refrigerant coil can be designed in such a way that a portable ice cream production container can be accommodated inside the winding. By accommodating the container inside the refrigerant coil in this manner, since each of the coil elements 1 is made of a material having elasticity, the volume inside the coil can be expanded, as described above. Convenient for putting in and taking out containers and holding them.

The above embodiment shows an example of a refrigeration coil, and various modifications are possible. That is, the coil is not circular but flat, has a quadrilateral cross section, is square;
It may also have a rectangular cross section.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the refrigerant coil of the present invention;
FIG. 2 is an enlarged sectional view of the end member in FIG. 1, FIG. 3 is an enlarged perspective view of the end member in FIG. 1, and FIG. FIG. 1... Coil element, 1a, 1b... End portion, 2...
Refrigerant circulation coil, coil, 3, 4... end member, 5.
...Connection space, 7...Sealing member, 8...Refrigerating device.

Claims (1)

[Claims] A plurality of coil elements stacked one after another with their sides in contact with each other; and one valve provided at each opposing end of the coil element, each having a plurality of connection cavities. A refrigerant circulation coil characterized by being formed so as to communicate with each other.