JPH09287851A - Cooling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a brine cooler to reduce size and weight, have one and the same fundamental arrangement structure as that of other type of device, and be standardized. SOLUTION: A condenser 2 is arranged at a lower stage, and a compressor 1, a plate-form brine cooler 3, and a control device 4 are disposed laterally in juxtaposition at the upper stage of the condenser 2 along a longitudinal direction to constitute a cooling device. The plate-form cooler 3 is constituted such that channel plates 3c composed by a plurality of herringbone types are laminated together through brazing members 3b and integrally formed through deposition brazing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device having a brine cooler.

[0002]

2. Description of the Related Art FIG. 8 is a front view showing a cooling device having a conventional brine cooler. In the drawing, 11 is a compressor, 12 is a condenser, 13 is a brine cooler, and 14 is a controller. As shown in FIG. 8, the condenser 12 is provided in the lowermost stage, and the brine cooler 13 is mounted in the upper stage of the condenser 12. Further, the compressor 11 and the control device 14 are mounted on the upper stage of the brine cooler 13, and are formed in three stages as a whole. The compressor 11, the condenser 12, and the brine cooler 13 are each connected by a refrigerant pipe to form a circulation circuit. In the figure, solid arrows indicate the flow of brine, and dotted arrows indicate the flow of refrigerant. FIG. 9 is a sectional front view showing the brine cooler 13, in which 13a is a cylindrical body and 13b.
Is a tube plate provided at both ends in the body 13a, 13c is a heat transfer tube inserted into a large number of holes provided in the tube plate 13b, 1
Reference numeral 3d is a refrigerant lid for sealing.

Next, the operation will be described. The high-temperature and high-pressure refrigerant gas compressed by the compressor 11 exchanges heat with the cooling water supplied from the outside through the cooling water pipe in the condenser 12 to become a high-pressure refrigerant liquid, and becomes a low pressure by an expansion valve (not shown) and becomes brine. It is introduced into the heat transfer tube 13c provided in the cooler 13 and exchanges heat with the brine in the body 13a to become a refrigerant gas and returns to the compressor 11. The brine cooled by exchanging heat with the refrigerant liquid in the brine cooler 13 is supplied to a freezing chamber (not shown) or the like through a brine pipe to cool the frozen object. The control unit 14 operates to stop the operation of these devices. Further, since the brine cooler 13 has substantially the same size as the condenser 12 and has a large size, the brine cooler 13 and the condenser 12 are attached to each other in a sturdy and complicated manner.

[0004]

The conventional cooling device having the brine cooler is configured as described above and has a large size of three-stage stacking, which facilitates assembly, piping and maintenance work. In addition, a large occupied floor area is required, and since the basic layout structure is different even for cold and heat models, there is a problem that standardization as a whole cannot be performed and various devices are required.

The present invention has been made in order to solve the above problems, and by making the brine cooler a plate type, it becomes possible to make the entire cooling device a two-stage laminated structure, and therefore the structure. The objective is to obtain a cooling device that can be standardized by simplifying the product, occupying a small floor area, and having the same basic layout structure as other models.

[0006]

SUMMARY OF THE INVENTION A cooling device according to the present invention is a plate type brine cooler in which a plurality of herringbone type channel plates are laminated via brazing members and are integrally formed by vapor deposition brazing. Is provided.

Further, the condenser is provided in the lower stage, and the compressor, the plate type brine cooler and the control device are arranged in the upper stage side by side along the longitudinal direction of the condenser.

Further, a condensing unit in which a compressor and a control device are mounted on one condenser along the longitudinal direction of the condenser is constructed, and the plate type brine cooler can be replaced with this condensing unit. It can be installed.

Furthermore, the fluid flowing in the plate type brine cooler is water.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1. Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a view showing a cooling device having a brine cooler according to the present invention, in which 1 is a compressor, 2 is a condenser, 3 is a plate type brine cooler, and 4 is a control device. As shown, the condenser 2 is provided in the lower stage, and the compressor 1, the plate-type brine cooler 3 and the control device 4 are disposed in the upper stage side by side along the longitudinal direction of the condenser 2. Is formed in two stages. The compressor 1, the condenser 2, and the plate-type brine cooler 3 are connected by refrigerant pipes to form a circulation circuit. In the figure, solid arrows indicate the flow of brine, and dotted arrows indicate the flow of refrigerant.

Next, the construction of the plate type brine cooler 3 will be described with reference to the drawings. 2 is a front view showing the plate type brine cooler 3, FIG. 3 is a sectional view taken along the line AA in FIG. 2, FIG. 4 is a partial sectional view taken along the line BB in FIG. 2, and FIG. 5 is integrated by vapor deposition brazing. It is an exploded perspective view showing a state before being molded. In the figure, 3a is a front cover plate, 3b is a brazing member, and the brazing member 3b is a thin copper foil having a thickness of 0.09 mm (copper purity 99.9).
%) Plate is formed by pressing. The brazing member 3b evaporates by heating vacuum to bring the channel plates described later into close contact with each other, and may be formed of Ni instead of copper. Reference numeral 3c is a herringbone type thin channel plate, which is a stainless plate having a thickness of 0.4 mm which is press-molded so as to enhance heat exchange efficiency and pressure resistance. 3d is a rear cover plate. A brine circuit 5 is composed of an upper A side nozzle 5a and a lower A side nozzle 5b. Reference numeral 6 denotes a refrigerant circuit, which comprises a lower B-side nozzle 6a and an upper B-side nozzle 6b. The brine circuit 5 and the refrigerant circuit 6 are provided in the plate stacking direction of the plate type brine cooler 3, respectively, and alternate in the height direction. Are provided so as to face each other between the plates adjacent to each other.

As shown in FIG. 5, in the plate type brine cooler 3, the front cover plate 3a, the brazing member 3b, the channel plate 3c and the rear cover plate 3d are alternately arranged so that the shape of the herringbone of the channel plate 3c is reversed. A large number of layers are stacked on top of each other, and are heated in a vacuum in a vacuum heating furnace (not shown) to melt the copper foil in a vapor state and closely adhere (vapor deposition brazing) to form an integral type. FIG.
Shows the state before vapor deposition brazing, the brazing member 3b becomes vapor state by vacuum heating, the channel plates 3c are brought into close contact with each other, only the adhesive surface of the channel plate 3c remains as a brazing material, and the others disappear. . FIG. 6 shows a state in which the vapor deposition brazing is completed, and the brazing member 3b remains as a brazing material only at the point P.

Next, the operation will be described. The refrigerant gas compressed by the compressor 1 becomes a refrigerant liquid in the condenser 2, is introduced from the lower B side nozzle 6a of the refrigerant circuit 6 of the plate type brine cooler 3 via an expansion valve (not shown), and is connected to the adjacent brine circuit 5 And exchanges heat with the brine flowing through the refrigerant to become a refrigerant gas, and returns from the upper B side nozzle 6b to the compressor 1 through the refrigerant pipe.

The brine is introduced from the upper A side nozzle 5a of the brine circuit 5 of the plate type brine cooler 3, is cooled by the refrigerant liquid which flows downward and adjoins, and flows out from the lower A side nozzle 5b. It is supplied to a freezer or the like through a brine pipe to cool the frozen object. Then, the stop of the operation of these devices is operated by the control device 4.

Since the plate-type brine cooler 3 is used as the brine cooler as described above, the structure is simple, the size and weight are small, and the installation area is reduced, so that the installation place can be effectively utilized and the installation height is high. Since the conventional three-stage stacking is reduced to two-stage stacking, the assembly and maintenance work can be facilitated.

Embodiment 2 Further, in the above-described embodiment, the case where the condenser 2 is provided in the lower stage and the compressor 1, the plate-type brine cooler 3 and the control device 4 are provided in the upper stage has been described, but it is shown in FIG. 7. As described above, the condensing unit 7 having the same arrangement structure of the condenser 2, the compressor 1, and the control device 4 has a basic arrangement structure, and the plate type brine cooler 3 is mounted on the condensing unit 7 to form a brine cooler. By doing so, it becomes easy to standardize the design, work, assembly, test and maintenance inspection as a model. Further, the plate-type brine cooler 3 need only be connected to the two inflow and outflow ports of the brine circuit and the refrigerant circuit, which can be simplified. Further, with the above structure, the installation area and height can be reduced by about 15% respectively compared with the conventional one.

Embodiment 3 In addition, the first embodiment
In 2, the fluid flowing through the plate-type brine cooler 3 was brine, but water may be used instead of brine. In refrigerators for the purpose of storing meat, etc.,
In such a case, brine is used because the temperature of the fluid needs to be 5 ° C. or lower. On the other hand, in an air conditioner or the like, the temperature of the fluid needs to be 5 ° C. or higher, so in such a case water may be used.

[0018]

Since the present invention is configured as described above, it has the following effects. According to the cooling device of the present invention, since a plurality of herringbone type channel plates are laminated via a brazing member, and a plate type brine cooler integrally formed by vapor deposition brazing is provided, the structure is It is simple, compact and lightweight, and the installation area is reduced, so that the installation place can be effectively utilized, and the installation height is also reduced, so that the assembly and maintenance work is facilitated.

Further, since the condenser is provided in the lower stage and the compressor, the plate-type brine cooler and the control device are arranged in the upper stage side by side along the longitudinal direction of the condenser, the installation height is the same as the conventional one. The three-layered stack has a lower level of the two-layered stack, which has the effect of facilitating assembly and maintenance work.

Further, a condensing unit in which a compressor and a control device are mounted on one condenser along the longitudinal direction of the condenser is constructed, and the plate-type brine cooler can be replaced with this condensing unit. Since the condensing unit and the brine cooler have the same basic arrangement structure, they can be standardized in designing, manufacturing, and testing.

Furthermore, since the fluid flowing in the plate type brine cooler is water, it can be effectively operated in an air conditioner or the like in which the temperature of the fluid is 5 ° C. or higher.

[Brief description of drawings]

FIG. 1 is a front view showing a cooling device according to a first embodiment of the present invention.

FIG. 2 is a front view showing the plate-type brine cooler according to the first embodiment of the present invention.

3 is a cross-sectional view taken along the line AA in FIG.

FIG. 4 is a partial cross-sectional view taken along the line BB in FIG.

FIG. 5 is an exploded perspective view showing a plate type brine cooler according to Embodiment 1 of the present invention.

FIG. 6 is a partial cross-sectional view showing a plate-type brine cooler according to Embodiment 1 of the present invention.

FIG. 7 is a front view showing a cooling device according to a second embodiment of the present invention.

FIG. 8 is a front view showing a conventional cooling device.

FIG. 9 is a sectional front view showing a conventional brine cooler.

[Explanation of symbols]

1 compressor, 2 condenser, 3 brine cooler, 3b
Brazing member, 3c channel plate, 4 control device, 7 condensing unit.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Hironori Satomi 2-6-2 Otemachi, Chiyoda-ku, Tokyo Sanryo Engineering Co., Ltd. (72) Nobuo Morimoto 2-6, Otemachi, Chiyoda-ku, Tokyo No. 2 Sanryo Electric Engineering Co., Ltd.

Claims (4)

[Claims] 1. A cooling device in which a compressor, a condenser, and a brine cooler are combined and connected by pipes, and the brine cooler is formed by stacking a plurality of herringbone type channel plates with a brazing member interposed therebetween. A cooling device which is integrally formed by vapor deposition brazing. 2. A condenser is provided in a lower stage, and an upper brine cooler is arranged side by side along the longitudinal direction of the condenser in the upper stage together with a compressor and a controller. The cooling device according to 1. 3. A condensing unit in which a compressor and a control device are mounted on one condenser along the longitudinal direction of the condenser, and the brine cooler can be replaced with the condensing unit. The cooling device according to claim 1, wherein the cooling device can be installed. 4. The cooling device according to claim 1, wherein the fluid flowing in the brine cooler is water.