JPS58153042A - Auxiliary hot-water feeding apparatus - Google Patents

Abstract

PURPOSE:To facilitate installation of an auxiliary hot-water feeding apparatus and to reduce noises produced during operation of the same, by controlling operation of an auxiliary burning section by a control section in response to information relating to the operation starting time and the operation time preset by a timer and the temperature of hot water detected by a temperature detector provided at the auxiliary burning section, and thereby achieving effective auxiliary combustion. CONSTITUTION:An auxiliary hot-water feeding apparatus 2 comprises an auxiliary heat exchanging section 6 disposed on an auxiliary burning section, i.e., a pot 5 for burning kerosine. The auxiliary heat exchanging section 6 is connected to a hot-water storing tank 3 via circulation pipes 8, 9 having a circulation pump 7, and a temperature switch 10 operated in response to the temperature of hot water is attached to an upper part of the section 6. Further, a control section 22 is connected to the temperature switch 10 via a timer 21 which sets the operation starting time and the operation time. When the operation starting time comes, the circulation pump 7 is at first set into operation for causing circulation of water between the tank 3 and the section 6. Here, if the temperature of hot water at the auxiliary heat exchanging section 6, i.e., in the hot-water storing tank 3 is lower than a prescribed value, the temperature switch 10 is set into operation to drive a fan 11 and an ignition transformer 16 by the control section 22, and at the same time, a solenoid valve 15 with an oil controller is opened.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an auxiliary heat source for a main water heater, and more particularly to an auxiliary water heater suitable as an auxiliary heat source for a solar water heating system.

Traditionally, this type of auxiliary heat source has been done by installing a hot water boiler etc. in the middle of the piping from the hot water storage tank to the bathtub (8) There are cases where a heat exchanger and burner are built into the hot water storage tank itself, but in the case of It is necessary to assume a case where solar heat is not available at all, and therefore it is necessary to select a boiler that has sufficient hot water heating capacity.
It is used with an ability of 17 o'clock or higher. The disadvantages of this system are that it is expensive, and that when the water in the hot water storage tank is high due to effective solar heat, heat is radiated in the heat exchange section of the boiler, resulting in energy loss. be.

In the case of fBt, heat is constantly heated, so even if solar heat alone is sufficient for hot water supply, it consumes fuel and may waste energy, and in some cases heat is constantly radiated from the built-in heat exchanger. It has the disadvantage that it may cause energy loss.

In view of the above-mentioned circumstances, the present invention is constructed separately from the main hot water supply system, piping is provided so that hot water can be circulated between it and the hot water storage pipe of the main hot water supply system, and the operation start time and operation are controlled by a control unit or a timer. The combustion operation of the auxiliary combustion section is controlled based on the time and water temperature information from the hot water temperature detector of the auxiliary combustion section, thereby achieving effective auxiliary combustion, simplifying installation and reducing noise during operation. In addition, it is small and saves money.
To provide an auxiliary hot water supply device that can be used regardless of the size of water.

An embodiment of the auxiliary water heater according to the present invention will be described below with reference to the drawings. In the drawings, 1 is a main water heater, and 2 is an auxiliary water heater. Main hot water supply system [1 consists of a hot water storage tank 3 and a main heat exchanger gfS4 heated by a burner etc.),
After water is circulated between the hot water storage tank 3 and the main heat exchange product 4 to boil it, it is stored in the hot water storage tank 3.
In a solar water heating system, a heat collector is used as the main heat exchanger 4. The auxiliary water heater a2 has an auxiliary heat exchange section 6 at the second part of the auxiliary combustion section, that is, the bot 5, which burns kerosene. A so-called hybrid switch IO, which is connected to the hot water storage tank 3 and operates by sensitively sensing the hot water temperature of the auxiliary heat exchange section 6, is attached. Next, the bottle-5 has a double wall structure, and the inner wall 12 is heated by the blower 11.
Air necessary for combustion is supplied into the interior through the ventilation hole 14 of the inner wall 12 from between the inner wall 13 and the outer wall 13, and kerosene is introduced into the inner wall 12 via a solenoid valve 15 with an oil volume regulator. It also includes an ignition heater 17 connected to an ignition transformer 16. Additionally, a pilot ring 18 is provided in the pot lb to further promote combustion by becoming red hot during combustion. The combustion gas in the pot 5 is transferred to the baffle plate 19 located in the center of the auxiliary heat exchange section 6.
After efficiently exchanging heat at the exhaust pipe δ), it is discharged to the outside from the exhaust pipe δ).

- 10,000, the temperature switch 10 is connected to a control unit 22 via a timer 21 that sets the operation start time and operation time. The timer 21 has a dial that is rotatable and has a time scale for each station, and is further provided with one on and one off setter corresponding to this dial,
The actual clock time is set by rotating the dial, and the driving start time and driving time are set by moving each setter.

The set value of this timer 21θ1 is automatically repeated with each prison time as one cycle.

The control fa 22 is connected to the electric wiring 2.3, the circulation pump 7, the blower 11, the solenoid valve 15 with an oil amount regulator, and the ignition transformer 16, respectively.

Thus, the timer 21 reaches the operation start time of the heat exchange section 6. That is, 1 ('1) If the hot water temperature in the hot water phase 3 is below the set value, the temperature switch 10 operates, and the control unit 22 operates the air blower 4fill and the ignition transformer 16, and at the same time, the oil level regulator is activated. Then, kerosene is introduced into the pot 5, ignited by the ignition heater 17, and combustion is started in conjunction with the air blowing by the blower 11. Along with this, the pilot ring 18
is red-hot, and as a result, the kerosene in the pot 5 is vaporized and its combustion state is further promoted. On the other hand, circulation □ 5
- When the pump 7 is driven, the hot water in the hot water storage tank 3 is circulated between the auxiliary heat exchange section 6 and the auxiliary heat exchanger 6 via the circulation pipe 8.9, and the hot water in the hot water storage tank 3 is brought to a predetermined temperature by the heat exchange action of the baffle plate 19. Boiled to . When the predetermined temperature is reached, the temperature switch 10 detects this, and the control section η first closes the solenoid valve 15 with an oil amount regulator, and then also stops the drive of the blower 11 to stop combustion. The circulation pump 7 is driven continuously during the operating time set in the timer 21, so when the hot water temperature drops below the set value, combustion is started again by the operation of the temperature switch 10, and from now on, such control will be performed. The action is repeated. The ignition heater 17 is energized only until the kerosene is combusted at the start of combustion. When the operating time set in the timer 21 ends, the circulation pump 7 also stops operating, and is not operated until the first operation start time, regardless of the water temperature.

Note that after the main water heater ltx has finished operating, the timer 21
If the temperature of the hot water in the hot water storage tank 3 is equal to or higher than the predetermined value even after the operation start time set in 6-? l [ is detected by the temperature switch 10 and controlled by the bot 5 so that combustion does not occur, thereby effectively preventing the water temperature from rising abnormally 11.

As described above, the auxiliary water heater according to the present invention is extremely effective and can be used as an auxiliary heat source when the main heat source, such as a solar hot water supply system, does not function adequately due to weather conditions. It is extremely easy to install because it only needs to be installed near the hot water storage tank of the main water heater and connected to the piping.Furthermore, compared to conventional auxiliary heat sources, less heat is generated, so the operation noise is extremely low, and late at night It does not cause I8 pollution even if it is operated.In addition, the start/time of operation and operation time can be set freely, and the hot water temperature sensor controls combustion in response to the hot water temperature, so there is no waste of fuel. It can be used efficiently, and furthermore, it circulates hot water between the hot water storage tank in the main hot water supply gA location and boils it to a predetermined temperature, and it takes a relatively long time to raise the temperature.
Kcal/h degree and heat generation jji: It has great effects such as being small in power and being able to be used regardless of the capacity of the hot water storage tank in the connected main water heater.

[Brief explanation of the drawing]

The drawing is a structural diagram showing an example of the auxiliary hot water supply device according to the present invention in a state where it is connected to an existing main hot water supply device. 1... Main hot water supply system f! t2... Auxiliary water heater 3...
・Hot water storage tank 4... Main heat exchange section 5... Bot 6.
...Auxiliary heat exchange FiiS't...Circulation pump 8.9
...Circulation pipe 10...Temperature switch 11...
Blower 12... Inner wall of pot 1.4... Outer wall of pot 14... Ventilation hole 15... Solenoid valve with oil kt regulator 16... Ignition 1-lance 17... Ignition heater 18...・Pilot ring 19... Baffle plate Addition... Exhaust pipe 21... Timer 2-
...Control unit, unit, 5, base...Electrical wiring patent applicant Michi Isono, patent attorney representing Chofu Kosan Co., Ltd.

Claims (1)

[Claims] An auxiliary heat exchange section equipped with a hot water temperature detector is provided in the second part of the auxiliary combustion section, and this auxiliary heat exchange section is connected to a separately installed hot water storage tank of the main water heater so that the hot water circulates. The temperature detector is connected to the control ms via a timer that can set the operation start time and operation time of the auxiliary combustion section, and this control section receives signals from the hot water temperature detector and the timer and starts the operation of the auxiliary combustion section. An auxiliary hot water supply device characterized in that it is configured to control.