JPS63194174A - Ice-making drum and manufacture thereof - 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 an ice-making drum that effectively cools and solidifies water by immersing it in water, and a method for manufacturing the same.

[Background of the invention and prior art]

There are cases where it is desired to make ice from some or all of the large amount of water in the aquarium. For example, in a thermal storage tank installed to store heat source water for air conditioning in a building, if some of the water in the thermal storage tank is made into fine ice, latent heat can be stored, so the amount of heat stored per unit capacity of the thermal storage tank can be reduced. can be increased. In addition, running costs can be reduced by making ice using electricity at night and using the latent heat of the ice as a cold source for cooling during the day.

Conventionally, in order to store ice heat in this way, an ice-making device using an ice-making refrigerator is installed separately, and the ice cubes produced by this ice-making device or a mixture of fine ice particles and water (sherbet-like) are stored in a heat storage water tank. Furthermore, there are known methods in which ice-making pipes are installed in a heat storage water tank and the water around the pipes is condensed.

[Problem that the invention seeks to solve]

When making ice from water in an aquarium, the water in the aquarium is sent to an ice-making device outside the tank to make ice, which requires transporting water and ice between the tank and the ice-making device. There is a problem that large-scale equipment is required.

When installing an ice-making pipe in an aquarium and condensing the water in the aquarium around the pipe, there is a limit to increasing the surface area of the pipe, and once ice has formed on the pipe surface, it is difficult for ice to grow further. Since there is a limit, it is necessary to lengthen the length of the pipe or install a large number of pipes within the water tank, resulting in problems such as excessive equipment costs and the inability to obtain high ice-making efficiency.

[Means to solve problems]

The present invention was made with the aim of solving the above-mentioned problems when making ice from a part of the water that exists in a large amount in an aquarium. The present invention provides an ice-making drum in which a cladding material formed by forming a large number of pipe passages is used as a drum constituent material. and.

A simple manufacturing method for this ice-making drum involves overlapping two metal plates and then welding their surfaces together by electric resistance welding to create a large number of lines with a predetermined distance between adjacent linear welds. a step of forming a shaped weld;

A process of welding both end faces of the metal plate I to each other to form a cylindrical drum with openings at both ends, and a process of supplying high pressure gas to the non-welded gap between the metal plates sandwiched by adjacent linear welds. A process of expanding the welding gap to form a large number of conduits between metal plates.

The present invention provides a method for manufacturing an ice making drum comprising:

When the ice-making drum according to the present invention is used to make ice from the water in the tank by immersing it in a heat storage water tank, for example,
By creating a unit that is integrated with blades that are placed around the inner and/or outer surface of the drum, ice that has formed on the drum surface is separated from the drum and suspended in the tank. Continuous ice making is possible.

The blades may be attached to a rotating shaft placed at the center of the drum so that they can revolve around the surface of the drum.

The content of the present invention will be specifically explained below with reference to embodiments shown in the drawings.

〔Example〕

FIG. 1 shows an embodiment of the ice-making drum according to the present invention in a perspective view with the front half of the body cut away.

1 indicates an ice making drum. As shown in the figure, the ice making drum 1 of the present invention has a cylindrical shape with both ends open, and a large number of refrigerant pipes 2 are provided in the surrounding material constituting the drum 1 itself. This refrigerant pipe line 2 is formed between two overlapping metal plates (metal plate a and metal plate b shown in FIGS. 5 and 6, which will be described later).

A refrigerant is supplied to each refrigerant pipe line 2 from a refrigerator.

3 is a scraper. In the illustrated example, the scraper blades 3 are installed so as to orbit around the inner peripheral surface of the drum 1.

That is, a scraper blade 3 is attached to a rotating shaft 4 installed at the center of the drum l, and the edge of this scraper blade 3 is attached to the drum l.
The inner surface of the refrigerant pipe 2 (the inner surface of the area where the refrigerant pipe 2 is present) is designed to circulate with a slight clearance.

The drum 1 is suspended by a hanging member 5 with its axis perpendicular, and is supported by a coupling 6 loosely fitted to the rotating shaft 4 (in the illustrated example, in two places above and below) and a support rod 7 extending from the coupling 6. The relative distance between the drum 1 and the rotating shaft 4 is kept constant (the positions of both are fixed so that the rotating shaft 4 is located at the center of the drum 1). In use, the coupling 6 is attached to the rotating shaft 4 in a loosely fitted state, so that one rotational movement of the rotating shaft 4 is controlled by the drum 1.
is not transmitted, and the drum 1 is stopped at the stop position by the hanging member 5. This hanging member 5 is made of a steel material such as an angle channel, and has sufficient rigidity to fix the drum 1 at a stationary position even when the plowing blade fl13 rotates.

FIG. 2 is an overall perspective view showing an ice-making drum l similar to that shown in FIG. 1 in a unitized state together with scraper blades 3. FIG. Second
In the figure, members indicated by the same numbers as in FIG. 1 are the same. In FIG. 2, reference numeral 8 denotes a support frame, and this support frame 8 supports the entire unit below. That is, the drum 1 is suspended below the support pedestal 8 by a plurality of hanging members 5, and the motor 9 that applies rotational power to the rotation shaft 4 of the scraper blade 3 is installed on the support pedestal 8. 10 is a speed reducer. As explained in FIG. 1, the drum 1 is supported on the rotating shaft 4 by the support rod 7 through the camp ring 6 which is loosely fitted to the rotating shaft 4, and the drum 1 is supported by the hanging member 5 on a support frame. 8, the rotational power of the rotating shaft 4 is not transmitted to the drum 1.

11 is a refrigerant outgoing pipe, and 12 is a refrigerant connecting pipe. These are connected to a refrigerator (not shown). Namely.

The liquid refrigerant produced in the refrigerator is supplied to the ice-making drum 1 through the refrigerant outgoing pipe 11, enters the refrigerant pipe 2 explained in FIG. Returned to the machine. In order to perform this gasification efficiently, as will be explained later in FIGS. 3 to 5, the vicinity of the inlet of each refrigerant pipe 2 is made into a thin tube, and the drum 1 is configured as a direct expansion type Fuji generator. be.

Instead of this direct expansion type, an expansion valve may be attached to the refrigerant outgoing pipe 11 near the entrance of the refrigerant pipe line 2.

The details of the ice-making drum of the present invention and its manufacturing method will be further explained below with reference to FIGS. 3 to 6.

FIG. 3 is a perspective view of the inside of the ice-making drum 1 when it is expanded. As shown in the figure, 1 ice making drum l of the present invention is 1
Two overlapping metal plates aI! : A large number of refrigerant pipes are formed between the plates b. The refrigerant conduit is an inlet hengoo conduit 14 formed longitudinally at one end of the plate. An outlet header conduit 15 formed longitudinally at the other end of the plate, and an inlet hengoo conduit 14.
and an outlet header pipe 15, each heat transfer pipe 2' has a pipe diameter at its connection to the inlet henggu pipe 14. It has a thin tube part 16 which is narrowed. This thin tube part 16
acts as a throttle valve. The inlet henggu pipe 14 is connected to the refrigerant outgoing pipe 11, and the outlet header pipe 15 is connected to the refrigerant connection pipe 12.
The construction into a cylindrical drum connected to the cylindrical drum is done by welding the two ends of the metal plates together.

17 in FIG. 3 shows this welded portion.

FIG. 4 is a diagram showing a linear weld pattern for forming a refrigerant conduit between two metal plates a and b. That is, metal plates a and b are overlapped, and then a continuous linear welded portion in a pattern as shown in the figure is formed on the flat plate surfaces of both metal plates a and b by electric resistance welding such as electron beam welding.

More specifically, between the adjacent linear welds, there is an inlet hengoo conduit 14. Exit Rohesogoo conduit 15. Each heat transfer pipe 2°,
A linear welding pattern with gaps for forming each conduit such as the thin tube section 16 is formed.

In this way, in manufacturing the ice-making drum according to the present invention, two metal plates are stacked on top of each other, and the metal plates are electrically welded together to create a predetermined gap between adjacent linear welds. A large number of spaced linear welds are formed.

Next, after forming a cylindrical drum with open upper and lower ends by welding both ends of the metal plates to each other, a non-welded gap between the metal plates sandwiched by adjacent linear welds (inlet henggu pipe 14, outlet , Lohesogoo pipe line 15, each heat transfer pipe line 2'', the gap that will become each pipe line such as the thin tube section 16), and expand this non-welded gap.In the linear weld pattern shown in the figure, the inlet Henggu pipe line 14. Outlet pipe line 15. Each heat transfer pipe line 2' and thin tube section 16
Since the non-welded gaps corresponding to It can be inflated into a path shape. This step of inflating with high-pressure gas is preferably carried out in a mold, that is, the drum with the pattern formed thereon is placed in a mold having the desired shape, and then the drum is inflated into the shape of the mold with high-pressure gas. This creates a drum with precisely shaped refrigerant channels.

5 shows a partial cross section of the thin tube portion 16 after expansion, taken along the line V-V in FIG. 4, and FIG. 6 shows a cross section of the heat transfer pipe 2 taken along the 5 is a partial cross-sectional view of " after expansion. In FIGS. 5 and 6.

A is a cross section of one weld of the linear weld that forms the pipe in question; 1 is a cross section of the other weld of the linear weld that forms the pipe; in these welds, metal plates a and b is welded.

In the drum 1 according to the present invention, since the refrigerant pipe is formed between the metal plates a and b, the metal plates on both sides forming the refrigerant pipe become heat transfer surfaces, and the space between each refrigerant pipe is The metal plate section that is continuous with the pipe section plays the role of heat transfer fins, resulting in a heat exchanger with extremely high heat exchange efficiency.

Moreover, as mentioned above, the production can be carried out in the dark.

FIG. 7 shows an example of the use of the ice-making drum unit of the present invention, in which the ice-making drum unit shown in FIG. 2 is immersed in a heat storage water tank that stores heat source water for air conditioning.

As shown in Figure 1, a normal heat storage water tank is divided into a plurality of small water tanks by a partition wall 21 having a communication path 20, and an ice making drum unit 23 according to the present invention is installed in some or all of these small water tanks. Immersion into each tank is achieved by supporting the support pedestal 8 in the manhole 24 present on the ceiling of the tank. Then, the refrigerant liquid is supplied from the cooler part 26 of the refrigerator 25 to each ice making drum by the pump 27 and evaporated there, and the gasified refrigerant is returned to the condenser part 29 of the refrigerator 25 by the pump 28. Each unit 23
In this case, ice blocks 30 grow on the outside surface of the drum to a certain thickness, but the ice formed on the inside surface of the drum is constantly scraped off from the drum by the aforementioned scraper blades, and the flakes are suspended in the tank. I will do it.

In addition, although the above-mentioned embodiment shows a unit having a scraper blade that revolves around the inner surface of the drum, each unit can also be configured to have a scraper blade that goes around the outer surface of the drum.

[Effect]

Since the ice-making drum of the present invention has refrigerant pipes formed between the metal plates a and b, the metal plates forming each refrigerant pipe themselves serve as a good heat transfer surface, and each refrigerant pipe Since there is a continuous metal plate in between, this serves as a heat transfer fin and achieves high heat transfer efficiency. By using the ice-making drum of the present invention by immersing it in a water tank, a portion of the water in the water tank can be easily made into ice, so it can be used to store ice heat in the heat source water for air conditioning. It is suitable for In addition, the ice making drum of the present invention can be easily manufactured by a simple and unique manufacturing method in which the refrigerant pipe is formed by electric resistance welding such as electron beam welding and the use of high pressure gas, and is easy to manufacture. It has the advantage of being very low cost.

[Brief explanation of the drawing]

FIG. 1 is a cut-away perspective view of the front half of the ice making drum according to the present invention, FIG. 2 is a perspective view showing an example of the ice making drum unit of the present invention, FIG. 3 is an exploded perspective view of the ice making drum of the present invention, and FIG.
The figure is a linear weld pattern diagram showing a process of manufacturing the ice making drum of the present invention, Figure 5 is a cross section taken along the line V-V of Figure 4 after expansion, and Figure 6 is Figure 4 after expansion. FIG. 7 is a schematic cross-sectional view showing an example of use of the ice-making drum unit of the present invention. 1. Ice making drum, 2. Refrigerant pipe line, 3. Scraping blade, 4. Rotating shaft, 6. Coupling,
7. Support rod, 8. Support pedestal. 9...Motor, 10...Reducer, 11...Refrigerant outbound pipe,
12... Refrigerant connection pipe, 14... Refrigerant inlet header, 15
... Refrigerant outlet, 16... Thin tube part. 23... Ice making drum unit, 25... Freezer.

Claims (2)

[Claims] (1) An ice-making drum whose drum component is a cladding material formed by forming a number of conduits for passing refrigerant between two stacked metal plates. (2) A process in which two metal plates are stacked on top of each other and the surfaces thereof are electrically welded to form multiple linear welds with a predetermined interval between adjacent linear welds. and a process of welding both end surfaces of the metal plates to each other to form a cylindrical drum with openings at both ends, and a process of supplying high pressure gas to the non-welding gap between the metal plates sandwiched by adjacent linear welds to perform the non-welding. A method for manufacturing an ice-making drum, which comprises the steps of expanding the gap to form a large number of pipes between metal plates.