JPH073158Y2 - Heat exchange tank - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a heat exchange tank such as a cooling tank and a heating tank.

[Prior art]

As one type of heat exchange tank, there is a heat exchange tank in which a heat exchange pipe through which a heat medium flows is wound around a bottomed cylindrical tank in multiple stages in the vertical direction. Japanese Patent Publication No. 60-48143 discloses a cooling tank which is an example of this type of heat exchange tank.

[Problems to be solved by the invention]

By the way, in this type of heat exchange tank, heat is exchanged between the heat medium flowing in the heat exchange pipe and the heat exchange object housed in the tank to cool or heat the heat exchange object. Therefore, it is desirable to increase the heat exchange efficiency between them as much as possible. However, there is a large gap between the inner circumference of the adjacent winding portions of the heat exchange pipe and the outer circumference of the tank, and this gap causes a large decrease in heat exchange efficiency. Further, when the heat exchange pipe is not properly wound around the outer circumference of the tank, the heat medium does not flow properly in the heat exchange pipe, which also causes a decrease in heat exchange efficiency.

Therefore, an object of the present invention is to provide a heat exchange tank having a high heat exchange efficiency by solving the above-mentioned problems without requiring a complicated production work.

[Means for solving problems]

In order to achieve the above object, the present invention provides a heat exchange tank of the above-mentioned type, in which a circle extending spirally along the outer periphery of the bottom portion of the tank at a predetermined lead angle with the pipe diameter of the heat exchange pipe being a substantially pitch. An arc-shaped brim portion is provided, and a hooking piece that is hooked and fixed to a lower end portion of the brim portion is provided at a winding start portion of the heat exchange pipe.

[Operation and effect of the device] In the heat exchange tank according to the present invention, the heat exchange pipe contacts the upper surface of the flange part with the hooking piece of the heat exchange pipe being hooked and fixed to the lower end of the flange part. When the heat exchange pipe is wound along the flange portion in this way, the lead angle of the flange portion makes the pipe diameter of the heat exchange pipe substantially equal to the pitch. Up to the outer circumference of the tank at a predetermined lead angle so as to be in contact with each other. Therefore, the length of the heat exchange pipe in contact with the outer circumference of the tank is maximized, and the heat exchange pipe is wound at a predetermined lead angle from the beginning to the end of winding to make the flow path resistance substantially uniform. The heat medium flows through the inside accurately, and high heat exchange efficiency is obtained.

Also, since the heat exchange pipe is wound in a state where the hook piece of the heat exchange pipe is hooked and fixed to the lower end of the collar portion, the work of winding the heat exchange pipe is easy, The heat exchange tank can be easily manufactured.

[Embodiment] The present invention will be described below with reference to the drawings. FIG. 1 shows a cooling tank 10 which is an embodiment of a heat exchange tank according to the present invention. As shown in FIG. 9, the cooling tank 10 is incorporated into a refrigeration circuit and used as a cooling tank for an ice cream manufacturing apparatus and an ice making apparatus. In the figure, reference numeral 21 indicates a compressor, and the compressor 21 is connected to the condenser 23 and the cooling tank 10 via connection pipe lines 22a, 22b, 22c to form a circulation circuit. There is. Further, a dryer 24 and a capillary tube 25 are interposed in the connection pipeline 22b, and
An electromagnetic opening / closing valve 26 is interposed in the bypass line 22d between the lines 22a and 22b. In such a refrigeration circuit, the cooling medium is an on-off valve.
When 26 is closed, it circulates through the pipelines 22a → 22b → 22c, and when the on-off valve 26 is opened, it circulates through the pipelines 22a → 22b → 22c.

As shown in FIGS. 1 and 2, the cooling tank 10 has a bottomed cylindrical tank 11, a cooling pipe 12, and a dish-shaped support plate 13.
And is embedded in the heat insulating material layer 19.
The cylindrical tank 11 has a taper shape that gradually expands toward the upper end opening side, and has a discharge hole 11a in the center of the bottom part thereof.

The support plate 13 has a dish shape as shown in FIGS. 1 to 4, and is provided with a bottom disc 13a and an outer periphery of the bottom disc 13a integrally with each other, and a predetermined lead having a pipe diameter of the cooling pipe 12 of substantially a pitch. It is provided with an arc-shaped brim portion 13b that spirally extends along the outer periphery at the corners. An opening 13c having a diameter larger than that of the discharge hole 11a of the cylindrical tank 11 is formed in the center of the bottom disk 13a, and a pair of inward flange portions 13d, 13d are opposed to each other on the inner peripheral edge of the opening 13c. Is formed. Each inward flange portion 13d is located at a predetermined distance from the lower surface of the bottom disc 13a, and functions as a connecting portion of a connecting pipe of a drain pipe described later. The collar portion 13b is composed of an arc-shaped plate portion 13b1 and an inclined portion 13b2 integrally formed on the outer peripheral edge thereof and bent downward, and as shown in detail in FIG.
Extends about 7/8 around the outer edge. Such support plate 1
3 is concentrically fitted to the bottom of the cylindrical tank 11 and fixed by spot welding, and the discharge hole 11a of the cylindrical tank 11 faces the center of the opening 13c of the support plate 13.

The cooling pipe 12 has a long cylindrical shape, and a hooking piece 12a is welded to the winding start portion thereof as shown in FIGS. 5 (a) and 5 (b). The interval between the hooking piece 12a and the outer circumference of the cooling pipe 12 is formed to have a size such that the lower end portion 13b3 of the plate portion 13b1 of the flange portion 13b of the support plate 13 is fitted. The cooling pipe 12 is fixed by hooking the hooking piece 12a to the lower end 13b3 of the collar 13b, and a covering layer made of a flexible material preliminarily adhered to the outer periphery of the cylindrical tank 11. It is wound around the outer periphery of 14 along the upper surface of the plate portion 13b1 of the collar portion 13b. Thereby, the cooling pipe 12 is wound in multiple stages in the vertical direction at a predetermined lead angle corresponding to the plate portion 13b1 of the collar portion 13b, and the winding portions 12b and 12b adjacent to each other of the cooling pipe 12 and the cylindrical tank are provided. A coating layer 14 is deformed and filled between the outer peripheries 11b of 11 as shown in FIG. The inclined portion 13b2 of the flange portion 13b functions to prevent the guide portion and the damage to the plate portion 13b1 in the initial winding of the cooling pipe 12. The coating layer 14 is made of a thermally conductive and flexible material, but in this embodiment, butyl rubber mixed with carbon and alumina powder is used. The winding end portion 12c of the cooling pipe 12 is soldered to a mounting piece 11c fixed to the upper outer peripheral portion of the cylindrical tank 11.

The cooling tank 10 in such a state has the state shown in FIGS. 2 and 3, and the cooling tank 10 has the states shown in FIGS.
The connecting pipe 15 shown in the figure is assembled. The connection pipe 15 is made of synthetic resin and includes a pipe portion 15a and a pair of mounting flange portions 15b and 15b integrally provided at one end thereof.
Each mounting flange portion 15b has a fan shape with the same radius centered on the center of the pipe portion 15a, and is formed in a size that fits into the opening portion 13c of the support plate 13. The lower surface of each flange portion 15b is formed with a stopper portion 15c projecting downward and a taper portion 15d whose thickness gradually decreases toward one end side, and each flange portion 15b is fitted into the opening 13c of the support plate 13. When the pipe portion 15a is held and rotated in the direction of arrow A in FIG. Then, the stopper portion 15c comes into contact with the end portion of the flange portion 13d and further rotation is restricted. As a result, the connection pipe 15 is liquid-tightly and detachably attached to the bottom of the cylindrical tank 11 and is attached to the discharge hole 11a of the tank 11. The cooling tank 10 is used as a cooling tank for ice making by directly storing water therein and as a cooling tank for manufacturing ice cream by storing a container containing a base material of ice cream.

In the cooling tank 10 having such a configuration, since the flexible coating layer 14 is filled between the winding portion 12b of the cooling pipe 12 and the outer periphery 11b of the cylindrical tank 11 which are adjacent to each other, both 11
Eliminates any voids formed between b and 12b,
And since the coating layer 14 is made of a heat conductive material, the transfer of heat between the cooling medium and the water in the cylindrical tank 11 and the ice cream base is not limited to the contact portion between the cooling pipe 12 and the cylindrical tank 11, and is also covered. A large amount is also transmitted through the layer 14. Therefore, the cooling efficiency in the cooling tank 10 is extremely high.

In addition, the hook 12a of the cooling pipe 12 is attached to the lower end 13 of the collar 13b.
When the cooling pipe 12 is wound and fixed along b3 so that the cooling pipe 12 is in contact with the upper surface of the flange portion 13b, the cooling pipe 12 is wound along the flange portion 13b. Since the diameter of the pipes is approximately the pitch, the cooling pipe 12
Are wound around the outer circumference of the cylindrical tank 11 at predetermined lead angles in multiple stages in the vertical direction so as to be in contact with each other from the beginning to the end of winding. Therefore, the length of the cooling pipe 12 in contact with the outer circumference of the bath is maximized, and the cooling pipe 12 is wound at a predetermined lead angle from the beginning of winding to the end of winding to make the flow path resistance substantially uniform. The cooling medium circulates properly inside, and high heat exchange efficiency is obtained.

In addition, the hook 12a of the cooling pipe 12 is attached to the lower end 13 of the collar 13b.
Since the cooling pipe 12 is wound in a state of being locked and fixed to b3, the winding work of the cooling pipe 12 is easy,
The cooling tank can be easily manufactured.

In the present embodiment, the example of the cooling tank is shown as the heat exchange tank according to the present invention, but the present invention is the same for the heating tank formed by winding the heating pipe through which the heating medium flows around the outer circumference of the tank. Can be carried out.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a cooling tank according to an embodiment of the present invention, FIG. 2 is a side view of the cooling tank before being embedded in a heat insulating material layer, and FIG. 3 is a bottom view of the cooling tank. The figure shows a side view of the support plate,
5 (a) and 5 (b) are enlarged longitudinal side views and longitudinal front views of the winding start portion of the cooling pipe, and FIG. 6 is an arrow VI in FIG.
-Enlarged vertical sectional view in the direction of the VI line, FIG. 7 is an enlarged sectional view of the connecting pipe, FIG. 8 is a vertical sectional view in the direction of arrows VIII-VIII in FIG. 7, and FIG. It is a schematic block diagram of a refrigeration circuit. Explanation of code 10 …… Cooling tank, 12 …… Cooling pipe, 12a …… Latching piece, 13
…… Support plate, 13b …… Collar, 13b3 …… Lower end.

Claims (1)

[Scope of utility model registration request] 1. A heat exchange tank in which a heat exchange pipe, in which a heat medium flows, is wound around the outer circumference of a bottomed cylindrical tank in multiple stages in the vertical direction, and a pipe diameter of the heat exchange pipe is around the bottom outer circumference of the tank. Is provided with an arc-shaped flange portion that extends spirally along the outer periphery at a predetermined lead angle with a substantially pitch, and is fixed to the lower end of the flange portion at the winding start portion of the heat exchange pipe. A heat exchange tank that is equipped with a hanging piece.