JPS60155849A - Composite hot-water supplier - Google Patents

Abstract

PURPOSE:To obtain hot-water without after heating from a hot-water supplying cock in a bathtub and improve energy saving property as well as safety property by providing the bypass circuit of hot-water supplying generated upon additional heating with a thermal automatic valve. CONSTITUTION:A forced water passing type heat exchanger 17 and a natural circulation type heat exchanger 18 are provided in the main body 16 of the device, the heat exchanger 18 is connected to the bathtub 20 through a water pass 19 and the heat exchanger 17 is provided with a dividing unit 22 at the outlet port thereof while one end of the unit 22 is connected to a hot-water pouring pipe 23 and the other end is connected to a hot-water supplying cock 24 provided in the hot-water dicharing circuit at the outside of the device. When the additional heating is started, water in the bathtub 20 is heated by the heat exchanger 18 and, simultaneously, the water in the heat exchanger 17 is also heated indirectly by convection, radiation or the like of heat, while heat, which can not be exchanged, is released from an air discharging top 40. At this time, the thermal automatic valve 25 absorbs the heat by the heat sensing section 22 thereof, the section 22 is expanded to open a bypass port 38 and the hot-water in the heat echanger 17 is stored into the bathtub through the hot-wate bypass circuit.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a composite water heater that supplies memorial hot water using gas, oil, electricity, or the like as a heat source.

Conventional structure and its problems Conventionally, this type of composite water heater has a structure as shown in FIG.

Inside the appliance body 1 are a forced water flow type heat exchanger 2 (hereinafter referred to as 2-redundant exchanger 2) and a natural circulation type heat exchanger 3 (hereinafter referred to as heat exchanger 3).
) is provided, and the bathtub 9 is connected via the circulation pipe 4 of the heat exchanger 3.
A hot water temperature sensor 6 is installed at the outlet of the heat exchanger 2.The outlet of the hot water circuit is connected to the hot water taps 7 and 8, and the hot water supply circuit is usually connected to the hot water taps 7 and 8, and is usually installed in a long frame piping like a general large hot water supply. It is. Fuel is supplied from the inlet section 9, and heat exchanger 2. A heater 10 provided corresponding to the heat exchanger 3. A heating device 11 is used to warm the mixture. Further, a fuel controller 12 and a fuel controller 13 are configured in each fuel supply system. 14 is a setting device, and 16 is a control section. There is also a remote installation configuration for the 14 setting device.

Explanation will be given by taking as an example the discharge of hot water from the heat exchanger 2 during or after the memorial heating of the water in the bathtub 6 by the heat exchanger 3.

When a heating signal for the heat exchanger 3 is output from the setting device 14, fuel is supplied to the heater 11 by the control unit 15 and the fuel controller 13, and the water in the bathtub 9 is commemorated via the heat exchanger 3. In general, this memorial operation is The process lasts from several minutes to an hour and then ends. In this case, the inside of the appliance main body 1 is heated by convection heat, radiant heat, etc., and the water in the heat exchanger 2 also becomes hot water. Naturally, if you open hot water tap 7 or 8 in this state,
It is clear that hot water comes out. Further, at the same time as water (hot water) flows through the heat exchanger 2, the heater 1o is operated by the control section 15 and the combustion controller 12 to heat the heat exchanger 2. In such a case, the high-temperature water will be heated again and may even vaporize, which is dangerous. (Generally referred to as the after-boiling phenomenon) This poses a serious problem, especially since the hot water tap 8 installed in the bathtub 6 and the like is used as a shower.

In recent years, there has been a demand for compact water heaters to be made smaller and more compact, and this cannot be realized unless the above-mentioned drawbacks are overcome.

OBJECT OF THE INVENTION The present invention is intended to eliminate such conventional drawbacks, and is to introduce high-temperature hot water into the memorial circuit through a bypass circuit as a means to prevent the phenomenon of after-boiling of hot water during use after memorial use. The purpose is to stabilize the hot water supply temperature and improve safety without sacrificing economic efficiency.

Structure of the Invention In order to achieve this object, the present invention divides the outlet part of one forced water type heat exchanger (hereinafter referred to as heat exchanger A) into the appliance body, and connects one side to the hot water circuit outside the appliance. Pouring hot water 1! It is configured to face the water supply pipe installed in the water pipe line of Configuration 1 to other natural or forced circulation heat exchanger (hereinafter referred to as heat exchanger B) as a pouring circuit, and there is no heat exchanger in the pouring circuit. An automatic valve (using a Wanox thermometer or the like) is configured to detect the heat of the B heat source and open/close the circuit, and the flow rate when opened is set to a minute amount (0 to 1.6 μ/m1n).

With this configuration, the indirect heating (post-heating) of the heat exchanger A due to the heating operation of the heat exchanger B is as follows.

The automatic valve in the hot water pouring circuit starts to detect heat, and when the set value is reached, the valve opens, and the hot water in Jifu A (heated by convection, radiant heat, etc.) is heated from the hot water pouring circuit. It is stored in the bathtub via AC Bi, and has the effect of recovering heat radiation loss, thereby increasing energy saving.

In addition, the temperature inside the heat exchanger A does not become high due to the action of the bypass circuit, and a stable hot water temperature is maintained, and high temperature hot water is not supplied from the hot water tap, resulting in an improvement in safety.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 2 to 4.

In FIG. 2, there is a forced water flow type heat exchanger 17 (hereinafter referred to as heat exchanger 1) and a natural circulation type heat exchanger 18 in the device main body 16.
(hereinafter referred to as the heat exchanger 18) is provided, and the water pipe line 19 of the heat exchanger 18 is installed.
It is configured such that the bathtub 20 [is connected to the bathtub 20 [] and a split part 22 (f-) is provided at the outlet of the heat exchanger 17, and one part is connected to the hot water supply pipe 23 and the other part is connected to the hot water tap 24 provided in the hot water outlet circuit outside the appliance. An automatic thermal valve 26 is installed in the pouring pipe 230 circuit, and a pouring port 26 is attached at the tip to face the water supply pipe 27.The circuit of the pouring pipe 23 is collectively referred to as a bypass circuit.

The water supply pipe 27 is formed perpendicularly to the water pipe 19 of the heat exchanger 18, and its height is set to be larger than the bathtub 20. heat exchange 1
7. A heater 28 and a heater 29 are provided corresponding to each heat exchanger 18. Fuel 6--Fuel supplied from the supply port 31 is controlled according to the load by a fuel controller 32 and a fuel controller 33, and is supplied to the heater 28.2.
It is configured to generate heat at 9.

Heat sensitive part 221d of the automatic thermal valve 25 Exhaust part 3 of the heat exchanger 28
A rod 35 and a sealing part 36 are provided on the heat-sensitive part 22 to maintain balance with a spring 37. The seal portion 36 opens and closes the bypass hole 38. 39 is a blower unit for exhausting air, and 40 is an exhaust top. FIG. 4 shows an example in which a pump 41 for forced circulation is provided in the water circuit of the heat exchanger 18, and the other configurations are the same.

In the above configuration, when reheating is started, the heat exchanger 18
At the same time, the water in the bathtub 2o is circulated and heated, and at the same time, the water in the heat exchanger 17 is also indirectly heated by convection, radiant heat, etc., and the heat that cannot be exchanged is discharged from the exhaust top 40 by the blower unit 39 via the exhaust section 34.

At this time, the thermostatic automatic valve 25 absorbs heat in the heat sensitive part 22, starts to expand, pushes up the seal part 36ff via the rod 35, and balances with the spring 37, so that the bypass hole 38 becomes open. When the bypass hole 38 is opened, the heated t%fc hot water in the heat exchanger 17 passes through the bypass [pass 1] to the heat exchanger 18.
It is retained in the bathtub via the water pipe 19.

Therefore, since the temperature inside the heat exchanger 17 does not rise, there is no hot water coming out from the hot water tap 24 due to post-boiling, and an excellent effect of improving safety is obtained. The heat exchanger 17 recovers heat, convection, and radiant heat, resulting in improved energy saving during reheating.

The automatic thermovalve 25 has a simple structure that senses exhaust heat and performs opening/closing operations based on thermal expansion, and there is no problem in reliability.

Effects of the Invention As described above, in the composite water heater of the present invention, the high temperature hot water generated at the time of memorial service is supplied into the bathtub 20 from the hot water tap 24 by the simple automatic thermal valve 26 structure provided in the bypass circuit. It provides hot water without any after-boiling, and is highly effective in terms of energy saving and safety.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of a conventional combined water heater, Fig. 2 is a block diagram of a combined water heater which is an embodiment of the present invention, Fig. 3 is a block diagram of the bypass thermal automatic valve section, and Fig. 4 FIG. 2 is a configuration diagram showing another embodiment of the present invention. 16... Appliance body, 17...- Forced water flow type heat exchanger, 18... Natural or forced circulation type heat exchanger,
19... Water pipe line, 23... Molten pouring pipe, 25...
Thermal automatic valve. Name of agent: Patent attorney Toshio Nakao and 1 other person
2nd page 3rd figure

Claims (1)

[Claims] The appliance body is equipped with a forced water flow type heat exchanger and another natural or forced circulation type heat exchanger, and the output side ff of the forced water flow type heat exchanger is divided within the appliance body, and one side is connected to the outside of the appliance. The hot water supply circuit constitutes a hot water pouring circuit that pours hot water into the water pipe section of the natural or forced circulation type heat exchanger through a hot water pouring pipe on the other side, and the natural or forced circulation type heat exchanger is in the hot water pouring circuit. A composite water heater equipped with a means to open and close by sensing the heat from the heat source of the vessel.