JPH07840Y2 - Electric case device for instant water heater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention mainly relates to an electric equipment case device in a gas instantaneous water heater.

(Prior Art) Conventionally, as this kind of water heater, it is composed of an upper heat exchanger, a lower burner in a combustion cylinder, and a lower fan in a frame-shaped water heater body. A heat exchanger unit is provided, and a partition plate is provided at a rear portion of the main body at a distance from a back plate of the main body, and a partition plate is provided at a lower portion of the back plate and an upper portion of the partition plate. A transparent window that communicates with the outside air in the interval and a through hole that communicates the inside of the interval with the space in the main body in front of the interval are provided. It is known that the formula is such that the space is guided downward.

(Problems to be solved by the invention) However, in this case, when the main body is provided with an electrical equipment case for accommodating a printed circuit board for operation control and other electrical components, the case is particularly small in size. When it is turned on, it is likely that it will be located close to the unit and the high temperature of the unit will be acted upon, and thus there is a demand to lower the temperature as much as possible.

(Means for Solving Problems) The present invention is intended to obtain a device that meets such requirements, and it is an object of the present invention to provide an upper heat exchanger and A heat exchanger unit consisting of a burner in the lower combustion cylinder and a blower in the lower side is provided, and a partition plate is provided at the rear part of the main body with a space from the back plate of the main body. The rear plate is provided with a transparent window in the lower part thereof for communicating the inside of the space with the outside air, and the upper part of the partition plate is provided with a transparent hole for communicating the space in the space with the space in the main body in front thereof. In this case, an electrical equipment case for accommodating a printed circuit board and other electrical components for operation control is internally fixed to the front side of the partition plate at the side of the unit, and the interior space of the case is It is formed by communicating the lower side through the opening on the lower surface and the inside of the space through the opening on the upper surface of the back surface .

(Embodiment) One embodiment of the present invention will be described with reference to the attached drawings.

In the drawing, (1) shows a frame-shaped water heater main body, in which the upper heat exchanger (2) and the lower burner (3) burner (4) in the main body (1) are provided. , A heat exchanger unit (6) consisting of a turbo fan-type blower (5) for combustion underneath. The burner (4) is composed of a line-shaped burner, and a plurality of parallel burners are provided in the combustion cylinder (3). A nozzle holder (8) having 7) is provided laterally, and a straightening plate (9) made of punching metal is interposed below the blower (5). In the drawing, (10) is a gas conduit leading to the nozzle holder (8),
(11) is a water supply pipe on one side of the heat exchanger (2),
(12) shows the tap pipe on the other side.

The rear plate (13) of the body (1) is provided at the rear of the body (1).
And a partition plate (15) with a space (14) between the space and a transparent window (16) communicating with the outside air in the space (14) at the lower part of the back plate (13). , On the upper part of the partition plate (15),
The space (14) is provided with a through hole (17) communicating with the space in the body (1) in front of the space (14), and thus the space (14) guides the outside air from the lower side to the upper side. Was formed. More specifically, the outside air is guided from the lower part to the upper part in the space (14) through the transparent window (16), and then is guided to the lower part in the space in front of it through the transparent hole (17). The blower (5) is supplied to the intake port (5a) on the lower surface of the blower (5).

Although the above is not particularly different from the conventionally known one, according to the present invention, an electric equipment case (19) for accommodating an electric equipment (18) such as a printed circuit board for operation control is prepared, and the electric equipment case (19) is prepared. 6) is located laterally of the partition plate (15) and is fixed to the front surface of the partition plate (15), and the inner space of the case (19) is located below the opening (20) on the lower surface and on the upper surface of the rear surface. In (21), the space (14), that is, the inside of the air supply passage is communicated.

More specifically, the opening (21) on the upper side of the rear surface is continuous with the opening (21) through the opening (22) formed in the partition plate (15) on the back side thereof, and 21) is provided with an eaves-shaped guide plate (23) extending from its upper edge into the interval (14) through the opening (22), and thus the interval (1
4) A part of the outside air guided upward in the guide plate (2
3) is guided from the inside of the opening (22) into the inside space through the inside of the opening (21) and is discharged to the outside lower side from the opening (20) therebelow. . In the illustrated one, a mounting plate (24) is provided on the front surface of the partition plate (15) extending substantially along the unit (6) in the vertical direction.
The case (19) is provided on the side opposite to the unit (6).
Were polymerized and fixed to them with screws (25).

(Operation) To explain the operation, according to the operation of the blower (5),
Due to the suction action, outside air is guided from the lower side to the upper side in the space (14) on the back surface of the partition plate (15) at the rear part of the water heater body (1), that is, the upper part thereof. Through the through hole (17) of the partition plate (15), and is guided to the lower part of the front space of the partition plate (15), while the outside air is in contact with the electrical equipment case (19) on the front surface of the partition plate (15). While passing through the outer periphery and giving an air-cooling action to it, a part of the outside air is further diverted in the space (14), and the diverted portion of the outside air flows downward from the upper side in the inner space of the case (19). Guided to the side, the case (19) is given an air cooling action from the inside. Thus, the case (19) is simultaneously subjected to the air cooling action from the outer periphery and the inside thereof, and the electric components inside the case (19) are protected from damage due to temperature rise.

(Effects of the Invention) As described above, according to the present invention, the electrical equipment case provided in the water heater body is provided with the air cooling effect from the outer periphery and the inside thereof by the outside air guided in the body. This can be protected as much as possible from the temperature rise due to heating by the heat exchanger unit on its side, and the damage due to the temperature rise of the electrical components inside it can be effectively prevented. Is effective in the case of downsizing as a whole, that is, in the case where it is necessary to provide the electrical equipment case in the vicinity of the heat exchanger unit, and the configuration thereof is relatively simple and can be obtained at low cost.

[Brief description of drawings]

FIG. 1 is a front view showing a part of an example of a water heater equipped with the device of the present invention removed, FIG. 2 is a side view showing a part thereof removed, and FIG. 3 is a III-III part of FIG. It is an expanded sectional view of a line cutting. (1) …… Boiler body, (2) …… Heat exchanger (3) …… Burning cylinder, (4) …… Burner (5) …… Blower, (6) …… Heat exchanger unit (13) ) …… Back plate, (14) …… Spacing (16) …… Transparent window, (17) …… Through hole (18) …… Electrical equipment, (19) …… Electrical case (20) …… Opening, ( 21) …… Open

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Masanobu Shinozaki 2-26 Fukuzumicho, Nakagawa-ku, Aichi Prefecture Nagoya, Japan (72) Creator Makoto Nozawa 2-26 Fukuzumicho, Nakagawa-ku, Nagoya City, Aichi Prefecture Within Linnai Co., Ltd. (56) Reference Japanese Patent Laid-Open No. 61-105054 (JP, A) Actually developed 54-183738 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A heat exchanger unit comprising an upper heat exchanger, a burner in a combustion cylinder below the frame, and a blower below the heat exchanger in a water heater main body having a frame casing, and A partition plate is provided at a rear portion of the main body with a space from the back plate of the main body, and a transparent window communicating with outside air is provided at a lower portion of the back plate. In the upper part of the plate, which is provided with a through hole that communicates the inside of the space with the space inside the main body in front of the plate, an electric component case for accommodating a printed circuit board for operation control and other electric components is provided inside the plate. And is fixed to the front surface of the partition plate and communicates the inside of the case with the lower side through the opening of the lower surface and the inside of the space through the opening of the upper rear surface. The electric equipment case device in the instant water heater.