JPH0579703A - Hot water supplying device - Google Patents

Abstract

PURPOSE:To improve the operability of a hot water supplying device by providing a heat insulating protection cover around the outer circumference of a hot water delivery device. CONSTITUTION:In the casting B2 of a hot water delivery device provided at the end section of a hot water supplying pipe 3 with manually operated indicating devices 44, 50 that indicate a change in the state of supply hot water, the hot water channel spreads on the whole of the casing, and the temperature of the casing is prone to become high. On the outer surface of the second easing B2 a protection cover 29 made of polypropylene is placed. There is a gap between this protection cover 29 and the second casing B2, and this gap forms an air layer for heat insulation. This protection cover 29 is ring-shaped, and it is provided with a port for see-saw button 50 and air vent hole. And, respective casings B1, B2, and B3 are connected by screws, and the position of the protection cover 29 is positioned by its abutting to the first casing B1 and third casing B3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger for heating water, heating means for heating the heat exchanger, and a water supply port and a hot water supply pipe connection port via the heat exchanger. A water supply channel communicating with the hot water supply pipe is provided in the main body case, a hot water supply pipe is connected to the hot water supply pipe connection port, and a tip end portion of the hot water supply pipe is provided with a manually-operated instruction means The present invention relates to a hot water supply device provided with a hot water outlet.

[0002]

2. Description of the Related Art As an instructing means, it is possible to instruct start and stop of hot water supply, switching between shower and straight, and the like. By the way, conventionally, a protective cover or the like for heat insulation has not been provided on the outer periphery of the water discharge tool.

[0003]

When hot water is being supplied, it is conceivable that the outer surface of the hot water supply device will become quite hot. Therefore, the user may feel heat when operating the indicating means. As a result, the operability of the hot water supply device deteriorates. An object of the present invention is to eliminate the above-mentioned conventional drawbacks, suppress the heat of the outer surface of the hot water supply device, and improve the operability of the hot water supply device.

[0004]

To achieve this object, the first characteristic configuration of the hot water supply apparatus according to the present invention is that an air insulating type protective cover is provided on the outer periphery of the hot water supply tool.

The second characteristic configuration is that the protective cover is provided with a vent hole.

[0006]

The operation of the first characteristic configuration is as follows. Since the protective cover is air-insulated to the hot water supply tool, heat transfer to the protective cover can be suppressed even when the hot water supply tool gets considerably hot. Therefore, it is possible to prevent the protective cover from becoming hot.

In the second characteristic configuration, the heat transfer to the protective cover can be further suppressed by ventilating the heated air.

[0008]

In either of the first and second characteristic configurations, the protective cover can be prevented from becoming hot, so that the user may feel the heat when he touches the protective cover when operating the indicating means. Can be reduced. As a result, the operability of the hot water supply device can be improved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a water heater will be described below with reference to the drawings. As shown in FIGS. 5 and 6, a heat exchanger 1 for heating water and a burner 2 as a heating means for heating the heat exchanger 1 are provided in the main body case A. The flexible pipe 3 having the hot water outlet 4 at the tip thereof is connected to the hot water supply pipe connection port 13 to form a hot water supply device.

Further, in the water supply passage W1 which connects the water supply inlet 12 and the hot water supply pipe connection inlet 13 via the heat exchanger 1, an electromagnetic on-off valve 5, a water governor 6 for opening and closing the water supply passage W1 and a water governor 6 are provided. Flow dividing valve 7 for adjusting the amount of water supplied to the heat exchanger 1 and the amount of bypass water
Is installed. In the fuel supply path G1 to the burner 2,
An electromagnetic shutoff valve 8, a water pressure responsive valve 9 interlocking with the water governor 6, a gas governor 10, and a control valve 11 for adjusting the fuel supply amount are interposed. In the figure, S1 is a push switch, 14 is a water flow switch, 15 is a hot water temperature adjusting dial for adjusting the hot water temperature, 16 is an ignition plug, 17 is a thermocouple,
18 is a back electromotive force thermocouple for preventing incomplete combustion, 20 is a lamp,
21 is a battery.

The structure of the hot water supply tool 4 will be described. As shown in FIGS. 1 and 4, the casing B of the water discharge tool 4 is
The first casing B1, the second casing B2, and the third casing B in order from the side near the tip of the flexible pipe 3.
3 and 3.

The water passage in the flexible pipe 3 and the water passage in the second casing B2 are communicated with each other via a cylindrical communication pipe 40. A water sealing member 41 is fitted on the upper end of the second casing B2. That is, the first casing B1
The space K formed between the communication pipe 40 and the communication pipe 40 is water-sealed. The communication pipe 40 and the water sealing member 41 are integrally formed. In FIG. 1, 42 and 43 are O-rings for water sealing. In the space K, a micro switch S3 for instructing the operation of the on-off valve 5 is provided. Micro switch S3
An operation member 44 for manual operation is formed along the outer surface of the first casing B1 so as to surround the communication pipe 40.

As shown in FIG. 2, the second casing B2
Is provided with a seesaw button 50 for selecting whether the state of hot water is shower or straight. That is, the valve body 51 provided in the flow path switching tool 55 that swings integrally with the seesaw button 50 has the shower valve opening 52 and the straight valve opening 53.
And are selectively blocked.

That is, the operating member 44 and the seesaw button 50.
However, a manually operated instruction means D for instructing to change the hot water supply state
It corresponds to.

In the second casing B2, the hot water channel spreads throughout the casing, and the amount of heat transferred to the casing increases. Therefore, the temperature of the casing tends to increase. Therefore, a polypropylene protective cover 29 is fitted around the outer periphery of the second casing B2. An air heat insulating layer is formed between the second casing B2 and the protective cover 29. In addition, each casing B1, B2, B3,
The protective covers 29 are screw-coupled to each other, and are positioned by contacting the first casing B1 and the third casing B3. As shown in FIGS. 2 to 4, the protective cover 29 is formed in a ring shape, and is provided with an opening a1 for the seesaw button 50 and a ventilation hole a2.

[Other Embodiment] In the above embodiment, the protective cover 29 was formed in a ring shape, but as shown in FIGS. 7 and 8, it may be formed in an arc shape. The structure can be changed in various ways.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a partially cutaway sectional view of a hot water supply tool.

FIG. 2 is a plan view of a main part of a hot water supply tool.

FIG. 3 is a side view of the protective cover.

[Fig. 4] Exploded view of the water heater

FIG. 5 is a block diagram of the overall configuration.

[Fig. 6] External view of the water heater

FIG. 7 is a side view of a hot water outlet according to another embodiment.

FIG. 8 is a plan view of a main part of a hot water outlet according to another embodiment.

[Explanation of symbols]

 1 Heat Exchanger 2 Heating Means 3 Hot Water Supply Pipe 4 Hot Water Supply Tool 12 Water Supply Port 13 Hot Water Supply Pipe Connection Port 29 Protective Cover A Main Body Case D Indication Means W1 Water Supply Channel a2 Vent Hole

Claims (2)

[Claims] 1. A heat exchanger (1) for heating water, a heating means (2) for heating the heat exchanger (1), and a water supply port () through the heat exchanger (1). 12) and a hot water supply pipe (13) for communicating with each other are provided in the main body case (A), and a hot water supply pipe (3) is continuously provided for the hot water supply pipe connection (13). A hot water supply device (4) provided with a manually operated instructing means (D) for instructing to change the hot water supply state at the tip of the hot water supply pipe (3), 4) An air insulation type protective cover (2
9) A hot water supply device provided. 2. The ventilation hole (a) in the protective cover (29).
The hot water supply device according to claim 1, wherein the hot water supply device is provided with 2).