WO2019172035A1

WO2019172035A1 - Water-cooled heat exchanger

Info

Publication number: WO2019172035A1
Application number: PCT/JP2019/007505
Authority: WO
Inventors: 泰人藤野
Original assignee: 日東工業株式会社
Priority date: 2018-03-05
Filing date: 2019-02-27
Publication date: 2019-09-12
Also published as: TW201938980A; JP2019152387A; JP7055558B2

Abstract

This water-cooled heat exchanger 1 is provided with: a radiator 12 which is arranged within a case 11; a piping part 13 which introduces cooling water for cooling the radiator; and a solenoid valve 14 which is connected to the piping part 13 outside the case 11.

Description

Water-cooled heat exchanger

The present invention relates to a water-cooled heat exchanger.

Patent Document 1 describes a water-cooled heat exchanger. A water-cooled heat exchanger cools the inside of a distribution board and a distribution board by circulating cooling water to a radiator. The water-cooled heat exchanger described in Patent Document 1 includes a radiator, a piping unit, and a solenoid valve in a casing. The radiator and the solenoid valve are connected by a piping section. When the solenoid valve is opened, the cooling water is supplied to the radiator through the pipe portion.

JP 2005-127568 A

冷却 Cooling water used in water-cooled heat exchangers is not always clean. The water-cooled heat exchanger may be used in an environment where the quality of the cooling water deteriorates. In such a case, since dust accumulates in the solenoid valve, it is necessary to replace or clean the solenoid valve. However, the conventional water-cooled heat exchanger has a problem that it is difficult to replace or clean the electromagnetic valve because the electromagnetic valve is disposed in the housing. That is, in the housing, the radiator, the piping part, and the solenoid valve are efficiently arranged so as not to leave a useless space. Usually, the space around the solenoid valve in the housing is occupied by the bent piping portion (see FIGS. 2 and 3 of Patent Document 1). For this reason, there is no extra space around the solenoid valve in the housing for an operator to put a hand or a tool to work.

The present invention has been made in view of the above problems, and an object thereof is to provide a water-cooled heat exchanger in which a solenoid valve can be attached and detached very easily.

In order to solve the above problems, a water-cooled heat exchanger according to the present invention includes a radiator disposed in a casing, a piping part for introducing cooling water to cool the radiator, and an outside of the casing. And a solenoid valve connected to the piping part.

Preferably, in the water-cooled heat exchanger, a cover for covering the solenoid valve is detachably provided.

Preferably, in the water-cooled heat exchanger, the solenoid valve is provided with a cover attaching portion for attaching the cover.

Preferably, in the water-cooled heat exchanger, the casing includes an input / output line portion for wiring a power cord of the solenoid valve in the casing, and the input / output line portion is covered by the cover. .

Preferably, the water-cooled heat exchanger includes a drainage unit for draining the cooling water introduced into the radiator, and a check valve connected to the drainage unit outside the housing. .

According to the water-cooled heat exchanger of the present invention, it is possible to attach and detach the solenoid valve arranged on the outside of the casing very easily, and the exchange and cleaning work of the solenoid valve becomes easy.

FIG. 1 is a perspective view of an electrical equipment storage box to which a water-cooled heat exchanger according to an embodiment of the present invention is attached as viewed from the front upper side. FIG. 2 is a perspective view of the water-cooled heat exchanger as viewed from above the back surface. FIG. 3 is a perspective view of the water-cooled heat exchanger as viewed from the front lower side. FIG. 4 is a perspective view of the water-cooled heat exchanger as viewed from the front lower side, and the cover shown in FIG. 3 is omitted. FIG. 5 is an exploded perspective view of the water-cooled heat exchanger. FIG. 6 is an enlarged view of the front lower portion of the water-cooled heat exchanger, and the lid and cover shown in FIG. 5 are omitted. FIG. 7 is a perspective view of the water-cooled heat exchanger in which the configuration of the cover is changed. FIG. 8 is a block diagram showing a state where a solenoid valve is not electrically connected to a substrate for operating the water-cooled heat exchanger. FIG. 9 is a block diagram illustrating a state in which the electromagnetic valve is electrically connected to the substrate.

Hereinafter, a water-cooled heat exchanger according to an embodiment of the present invention will be described with reference to the drawings.

<Outline of water-cooled heat exchanger>
As shown in FIG. 1, the water-cooled heat exchanger 1 of the present embodiment is installed outside the electric device storage box 10 and cools hot air in the electric device storage box 10. As shown in FIGS. 2 to 4, the water-cooled heat exchanger 1 includes a housing 11. The housing 11 includes a main body 31 and a lid 32 that covers the front side of the main body 31. The lid part 32 is fixed with screws to an attachment hole 38 formed outside the opening 39 of the main body part 31 (see FIG. 5).

1 is formed with an opening (not shown) corresponding to the rear surface of the housing 11 shown in FIG. 2 on the wall surface of the electric equipment storage box 10 shown in FIG. On the other hand, an air introduction port 34 and an exhaust port 35 are provided on the back surface of the housing 11. The air inlet 34 is located in the upper part of the casing 11, and the exhaust outlet 35 is located in the lower part of the casing 11.

As shown in FIG. 5, a radiator 12, a piping unit 13, and a fan 33 are installed in the housing 11. Hot air in the electrical equipment storage box 10 is introduced into the housing 11 from the air inlet 34 by the fan 33 and is cooled by touching the radiator 12. Cooling water for cooling the radiator 12 is introduced into the piping unit 13. The air cooled by the radiator 12 is returned from the exhaust port 35 into the electric equipment storage box 10. Thereby, an electric device (not shown) stored in the space in the electric device storage box 10 is cooled.

Here, as shown in FIG. 2, a water shielding plate 61 is provided at the exhaust port 35. The water shielding plate 61 is fixed to the main body 31 of the housing 11. When the water leaks from the radiator 12, the water shielding plate 61 blocks the water accumulated in the housing 11 from entering the electric device storage box 10.

<Radiator, piping section>
The cooling structure of the radiator 12 and the piping part 13 will be described in more detail. The radiator 12 is provided with a cooling water inlet and a cooling water discharge port (not shown). The piping part 13 is connected to each of the cooling water inlet and the cooling water outlet of the radiator 12. The cooling water is introduced into the radiator 12 from the pipe portion 13 connected to the cooling water introduction port. This cooling water passes through the radiator 12 and then is discharged out of the casing 11 through the piping portion 13 (see the drainage portion 37 in FIG. 6) connected to the cooling water discharge port. According to such a configuration, the heat of the air introduced into the housing 11 from the electrical equipment storage box 10 is taken away by the radiator 12 and discharged out of the housing 11 by the cooling water circulating in the radiator 12. Is done. As a result, the hot air in the electrical equipment storage box 10 is effectively cooled.

<Solenoid valve>
As shown in FIGS. 1 to 5, an electromagnetic valve 14 is installed outside the housing 11. The electromagnetic valve 14 includes a valve part 41 and an electromagnetic part 42. On the other hand, as shown in FIG. 6, the main body 31 of the housing 11 is provided with two connection portions 16 on the introduction side and the discharge side. The valve portion 41 of the electromagnetic valve 14 is connected to the introduction-side connecting portion 16 outside the housing 11. The introduction-side connecting portion 16 is connected to the piping portion 13 described above inside the housing 11. As already described, the pipe portion 13 is connected to the cooling water inlet of the radiator 12.

Since the electromagnetic valve 14 is installed outside the housing 11, the water-cooled heat exchanger 1 of the present embodiment has the following operational effects. First, it becomes possible to attach and detach the electromagnetic valve 14 very easily. That is, there are no obstacles around the electromagnetic valve 14 such as the wall surface of the housing 11 or the bent pipe portion 13 that obstruct the operation of attaching or detaching the electromagnetic valve 14. Thereby, replacement | exchange of the solenoid valve 14 and the operation | work of cleaning become easy. Second, it is not necessary to provide a space for housing the electromagnetic valve 14 in the housing 11, and the housing 11 can be downsized. Further, when the casing 11 is made to be the same size as the conventional one without downsizing, it is possible to secure a large storage space for the bent pipe portion 13 in the casing 11. That is, the degree of freedom in route design of the piping part 13 is improved. Third, the inside of the housing 11 is hardly heated by the heat generated from the electromagnetic valve 14.

Here, the connection part 16 of this embodiment is comprised by the joint member which can connect the valve part 41 of the piping part 13 and the solenoid valve 14 only by inserting. By such a joint member, the attaching / detaching work of the electromagnetic valve 14 performed outside the housing 11 is further facilitated. Further, the joint member does not need to be tightened to connect the piping part 13 or the electromagnetic valve 14. As a result, the connection part of the piping part 13 and the valve part 41 is not deformed by excessive tightening.

As shown in FIG. 4, the valve portion 41 of the electromagnetic valve 14 is opened and closed by the electromagnetic portion 42. Power necessary for opening and closing the valve unit 41 is supplied to the electromagnetic unit 42 via the power cord 59. The power cord 59 is electrically connected to the substrate 54 (see FIGS. 8 and 9) provided in the main body 31 of the housing 11 through the input / output line 18. In addition, the input / output line part 18 of this embodiment is arrange | positioned back rather than the connection part 16 by the side of introduction. With this arrangement, the incoming / outgoing line portion 18 does not interfere with the attaching / detaching work of the electromagnetic valve 14.

When the valve portion 41 of the solenoid valve 14 is opened, new cooling water is introduced into the radiator 12. Further, when the valve portion 41 of the electromagnetic valve 14 is closed, the introduction of the cooling water to the radiator 12 is stopped. When inspecting the radiator 12 or when an abnormality occurs in the radiator 12, the valve portion 41 of the electromagnetic valve 14 is closed. Preferably, the valve portion 41 of the electromagnetic valve 14 is arranged so that the cooling water can flow by gravity. This arrangement makes it difficult for dust to accumulate in the valve portion 41. Note that the solenoid valve 14 may be connected to the discharge-side connecting portion 16 shown in FIG.

<Cover>
As shown in FIG. 3, the electromagnetic valve 14 and the connection portion 16 are covered with a cover 15 outside the housing 11. As shown in FIG. 6, a cover mounting portion 43 is provided on the valve portion 41 of the electromagnetic valve 14. The cover attaching part 43 of this embodiment is two screw holes. As shown in FIG. 5, the cover 15 is screwed to the cover mounting portion 43 of the valve portion 41. The cover 15 can be separated from the solenoid valve 14 independently regardless of the lid portion 32 of the housing 11. By providing the cover attachment portion 43 in the valve portion 41, it is not necessary to provide an attachment hole for attaching the cover 15 in the main body portion 31 of the housing 11. The cover attaching portion 43 may be provided not on the valve portion 41 but on the electromagnetic portion 42.

As shown in FIGS. 2 and 3, the cover 15 of the present embodiment is composed of three surfaces, a front surface and left and right side surfaces, and covers the electromagnetic valve 14 from three directions. Since the cover 15 does not have a top surface, a bottom surface, and a back surface, the cover 15 can be easily attached to and detached from the solenoid valve 14, and the ease of maintenance of the solenoid valve 14 is not impaired. Here, a notch 71 shown in FIG. 3 is formed on the front surface of the cover 15. The notch portion 71 engages with a part of the connection portion 16 and suppresses the rotation of the cover 15. Such a notch 71 eliminates the need to provide a screw and a screw hole for suppressing the rotation of the cover 15, thereby simplifying the mounting structure of the cover 15.

Such a cover 15 protects the solenoid valve 14 and the connecting portion 16 arranged outside the housing 11 from the surrounding environment. In particular, since the cover 15 of this embodiment also covers the connection portion 16 formed of a joint member in addition to the electromagnetic valve 14, waterproofness of the connection portion between the electromagnetic valve 14 and the connection portion 16 is achieved. That is, when the cooling water is ejected from the connection portion between the electromagnetic valve 14 and the connection portion 16, the cover 15 suppresses the scattering of the cooling water over a wide range. Furthermore, since the cover 15 also covers the power cord 59 of the solenoid valve 14 shown in FIG. 4 and the input / output line portion 18 for wiring the power cord 59 in the housing 11, the design around the solenoid valve 14 can be improved. Become good.

<Check valve>
As shown in FIGS. 1 to 5, a check valve 17 is installed outside the housing 11 adjacent to the electromagnetic valve 14. As shown in FIG. 6, the check valve 17 is connected to the discharge-side connecting portion 16 on the outside of the housing 11. The discharge-side connection portion 16 is connected to the above-described piping portion 13 (see the drainage portion 37 in FIG. 6) inside the housing 11. As already described, the pipe portion 13 is connected to the cooling water discharge port of the radiator 12. The check valve 17 suppresses the backflow of the cooling water. For example, the check valve 17 has a built-in valve that automatically closes in response to water pressure when the cooling water flows backward. Since the check valve 17 is installed outside the housing 11, the check valve 17 can be attached and detached very easily, and the check valve 17 can be easily replaced and cleaned.

<Example of changing the cover>
Here, the cover 15 is not limited to the configuration shown in FIG. For example, the cover 15 is configured to cover not only the electromagnetic valve 14 and the connecting portion 16 but also all members including the check valve 17 and the drain pipe 36 that are disposed outside the housing 11 shown in FIG. There may be. The cover 15 having such a configuration is shown in FIG. The cover 15 illustrated in FIG. 7 includes three surfaces corresponding to the front surface (lid portion 32) and the left and right side surfaces of the housing 11. Such a cover 15 covers all members arranged outside the housing 11 from three sides.

7 is attached to the main body 31 of the housing 11, for example. In this case, it is possible to use the attachment hole 38 for attaching the cover part 32 shown in FIG.5 and FIG.6 for attachment of the cover 15. FIG. According to such a configuration, even when the screw for attaching the cover 15 is loosened, water can be prevented from entering the housing 11.

According to the cover 15 shown in FIG. 7, it becomes possible to cover all the members such as the electromagnetic valve 14, the check valve 17, the two connection portions 16, and the drain pipe 36 disposed outside the housing 11. . Such a cover 15 protects all members arranged outside the housing 11 from the surrounding environment. Further, the cover 15 prevents the cooling water from being scattered around even when the cooling water is ejected from one or both of the two connecting portions 16. Furthermore, according to the cover 15 shown in FIG. 7, the design of the whole water-cooled heat exchanger 1 is improved.

<Power supply for solenoid valve>
As described above, the power for opening and closing the electromagnetic valve 14 is supplied from the inside of the housing 11 via the power cord 59 shown in FIG. The power cord 59 is electrically connected to the substrate 54 (see FIGS. 8 and 9) provided in the main body 31 of the housing 11 through the input / output line 18. The substrate 54 is for operating the water-cooled heat exchanger 1 and is electrically connected to an external power source 56 via a terminal block 55.

Here, when exchanging or cleaning the electromagnetic valve 14, it is necessary not only to remove the valve portion 41 from the connection portion 16, but also to disconnect the electrical connection between the electromagnetic portion 42 and the substrate 54. For this reason, when assembling the electromagnetic valve 14 to the water-cooled heat exchanger 1, the operator may forget to electrically connect the electromagnetic unit 42 and the substrate 54 again. In order to prevent such a mistake, it is preferable that the water-cooled heat exchanger 1 does not operate unless the electromagnetic valve 14 and the substrate 54 are electrically connected.

Therefore, for example, it is conceivable to adopt the circuit configuration shown in FIGS. A first connector 51 is provided at the output end of the substrate 54 for operating the water-cooled heat exchanger 1. On the other hand, a second connector 52 is provided at the input end of the electromagnetic valve 14. Each of the first and

second connectors

51 and 52 includes four terminals that are electrically connected to each other. Two of the four terminals of the first and

second connectors

51 and 52 electrically connect the substrate 54 and the electromagnetic valve 14.

The other two of the four terminals of the first connector 51 are electrically connected to the substrate 54 and the external power source 56. The other two terminals of the first connector 51 are electrically connected to each other, whereby power from the external power source 56 is supplied to the substrate 54 via the terminal block 55. On the other hand, the other two of the four terminals of the second connector 52 are short-circuit portions 53.

When the first and

second connectors

51 and 52 are electrically connected to each other, the substrate 54 and the electromagnetic valve 14 are electrically connected, and the short-circuit portion 53 of the second connector 52 is connected to the substrate 54 and the external power source 56. Are electrically connected to each other. As a result, power is supplied from the external power source 56 to the substrate 54, and the water-cooled heat exchanger 1 and the electromagnetic valve 14 can be operated.

If the solenoid valve 14 and the substrate 54 are not electrically connected, the configuration in which the water-cooled heat exchanger 1 does not operate is not limited to the circuit configuration shown in FIGS. For example, the processor mounted on the board 54 may execute a control process for enabling the water-cooled heat exchanger 1 based on a signal indicating that the electromagnetic valve 14 is connected.

<Others>
The water-cooled heat exchanger of the present invention is not limited to the configuration of the above-described embodiment, and various modifications can be made. For example, the cover is not limited to a configuration that covers the electromagnetic valve from three directions, and can be configured to cover the electromagnetic valve from the front, left and right sides, and the back.

DESCRIPTION OF SYMBOLS 1 Water-cooling type heat exchanger 11 Case 12 Radiator 13 Piping part 14 Solenoid valve 15 Cover 17 Check valve 18 I / O wire part 41 Valve part 43 Cover attaching part 59 Power cord

Claims

A radiator disposed in the housing;
A piping section for introducing cooling water for cooling the radiator;
A solenoid valve connected to the pipe section outside the housing;
A water-cooled heat exchanger.
The water-cooled heat exchanger according to claim 1, wherein a cover for covering the solenoid valve is detachably provided.
The water-cooled heat exchanger according to claim 2, wherein a cover attaching portion for attaching the cover is provided in the solenoid valve.
The water-cooled heat exchanger according to claim 2 or 3, wherein the casing includes an input / output line portion for wiring the power cord of the solenoid valve in the casing, and the input / output line portion is covered by the cover.
The drainage part for draining the cooling water introduced into the radiator, and a check valve connected to the drainage part outside the housing, further comprising: Water-cooled heat exchanger.