JPH03129246A - Hot water room heater - Google Patents

Abstract

PURPOSE:To increase the width of selecting heat sink units and to use the sink units in parallel by providing a water storage tank on the way of a circulation pipe communicating a hot water boiling tank with the units, and providing a temperature regulating valve in the pipe. CONSTITUTION:A water storage tank 6 is provided on the way of a circulation pipe 4b communicating a hot water boiling tank 2 with a heat sink unit 3. The upper inlet 6a of the tank 6 is connected to the tank 2, the lower outlet 6b is connected to the unit 3, and a temperature regulating valve 7 is provided in the pipe 4b communicating the tank 6 with the unit 3. The hot water inlet side of the valve 7 is connected to the upper inlet 6a of the tank 6 via a bypass tube 8, a connection tube 9 for connecting the outlet 6b of the tank 6 to an open tank 1 is provided, and a check valve 9a for stopping the flow from the valve 7 side to the tube 9 is provided. Accordingly, cold water can be held on the way of the pipe 4b for feeding under pressure the hot water from the tank 2 to the unit 3 by the operation of the tank 6, and the hot water of desired temperature can be supplied to the unit 3 by combination with the valve 7. Thus, the unit 3 can freely select from a high temperature type to a low temperature type, and the units 3 can be used in parallel.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a hot water heating device that performs heating by supplying hot water heated by a burner to a radiator without using a circulation pump.

[Conventional technology]

Conventionally, hot water heated in a water heater is forcibly circulated using steam pressure instead of a circulation pump, and this type of general structure is known from Utility Model Publication No. 57-53929. This conventional structure has a very large amount of energy loss, has very little circulation hydraulic power per unit time, and sometimes has problems where the internal pressure of the water boiler and the differential pressure from the open tank are balanced, causing circulation to fail.

For this reason, the applicant has filed Japanese Patent Application No. 55-97966, Japanese Patent Application No. 61
-181671, Japanese Patent Application No. 62-192811, and Japanese Patent Application No. 1-109891, we have made practical improvements to a hot water circulation system that stably circulates a large amount of hot water with very little energy loss. did.

[Problem to be solved by the invention]

By the way, the above-mentioned system for circulating hot water using steam pressure heats the water boiler with the valve attached to the circulation pipe that connects the open tank and the water boiler closed, and uses the steam pressure generated inside the water boiler to circulate hot water to the radiator. Since the hot water is pumped, there is a large difference in the temperature of the hot water sent to the radiator between when the water heater is full and when it is about to empty.In particular, when the water heater is about to empty, the temperature is 100°C. The temperature will be around that level. For this reason, when performing hot water heating with this hot water circulation system, it is difficult to select a radiator because the hot water circulation is performed intermittently, especially panels installed on the floor or wall that use radiant heat, which is a low-temperature heat radiating type radiator. Some of them became too hot to be used. Also, when radiators are installed in parallel, thermal energy tends to be dissipated by one radiator, so changing the amount of heat generated by one radiator may change the amount of heat generated by the other radiator. Therefore, in actual use, it was not possible to install heat sinks in parallel.

[Means to solve problems]

This invention widens the range of usable heat radiators, and also enables the parallel use of heat radiators.
A water boiler 2 provided at a lower position than the open tank 1 and a radiator 3 to which hot water from the water boiler 2 is supplied are provided, and the open tank water boiler 2, the radiator 3, and the open tank 1 are communicated through a circulation pipe 4. , a valve 5 that opens when the water boiler 2 starts empty heating is attached to the circulation pipe 4a that communicates the open tank 1 and the water boiler 2, and when the valve 5 opens, the water in the open tank 1 flows into the water boiler 2, and the valve 5 closes. Radiator 3 uses steam pressure to heat water from water heater 2.
In a hot water circulation device that pumps hot water from the water to the open tank 1, a water storage tank 6 is provided in the middle of the circulation pipe 4b that communicates the water boiler 2 and the radiator 3, and the upper inlet 6a of the water storage tank 6 is connected to the water boiler 2, and the lower inlet is connected to the water boiler 2. The outlet 6b is connected to the radiator 3, and a temperature control valve 7 is provided in the circulation pipe 4b that communicates the water storage tank 6 and the radiator 3, and the high temperature input side of the temperature control valve 7 and the upper inlet 6a of the water storage tank 6 are bypassed. A communication pipe 9 is provided which is connected by a pipe 8 and communicates the lower outlet 6b of the water storage tank 6 with the open tank 1, and the communication pipe 9 is provided with a check valve 9a that stops the flow from the temperature control valve 7 side. It is something.

In addition, in order to enable parallel use of radiators, a water storage tank 6
A plurality of temperature control valves 7 are provided which are connected to the lower outlet 6b and the bypass pipe 8, and each outlet of the temperature control valve 7 is connected to a different radiator 3, 3a.

[For production]

In this invention having the configuration described above, when the valve 5 is closed and the water heater 2 is heated, the steam pressure generated within the water heater 2 causes the hot water in the water heater 2 to flow through the circulation pipe 4b to the radiator 3.
After releasing the heat, it is returned to the open tank l. At this time, the hot water in the water boiler 2 is divided into the circulation pipe 4b to which the water storage tank 6 is attached and the bypass pipe 8 that does not pass through the water storage tank 6, and after the divided hot water is combined at the temperature control valve 7, it is sent to the radiator 3. .

The circulation pipe 4b connected to the water boiler 2 is connected to the upper inlet 6a of the water storage tank 6, and since the water in the water storage tank 6 is not directly heated, its temperature is low, and the hot water entering from the upper inlet 6a of the water storage tank 6 is The water is mainly stored in the upper part of the water storage tank 6, and low temperature water is instead sent to the temperature control valve 7 from the lower outlet 6b of the water storage tank 6. For this reason, the temperature control valve 7
is appropriately mixed with high-temperature water sent directly from the water boiler 2 via the bypass pipe 8 to become hot water at a preset temperature and sent to the radiator 3. Therefore, hot water at a temperature suitable for the radiator 3 can be supplied, and a panel-shaped radiator 3 designed for low temperatures can also be used.

On the other hand, just before the water boiler 2 starts empty heating, the circulating vape 4b
Hot water mixed with steam is sent to the tank, but since the steam is liquefied by the water (hot water) in the water storage tank 6, it is difficult for the hot water mixed with steam to flow to the bypass pipe 8, and there is no risk that the temperature control valve 7 will be heated by the steam. .

When the water boiler 2 starts empty heating, steam is no longer generated and the internal pressure decreases. When the valve 5 is opened at the start of this dry heating, water is sent from the open tank 1 to the water boiler 2 via the circulation pipe 4a. At the contact points between water and steam in the circulation pipes 4a and 4b, liquefaction of the steam progresses and acts to lower the pressure inside the water boiler 2, so that water flows from the open tank 1 into the water boiler 2. The water boiler 2 is not in a heated state immediately after the start of empty firing, and the steam inside is immediately liquefied by the water that has flowed in. This creates negative pressure inside the water boiler 2 and sucks the water from the open tank 2. , it will soon become full of water.

Then, the lower outlet 6b of the water storage tank 6 and the open tank 1 were connected with the connecting pipe 9, and the upper inlet 6a of the water storage tank 1 and the water boiler 2 were connected with the circulation pipe 4b. 6. Circulation, 5. Suction the water from the open tank 1 through the route of the circular pipe 4b. At this time, the cold water in the open tank 1 is stored at the bottom of the water storage tank 6.
Hot water in the upper part of the water storage tank 6 is sent to the boiler 2.

Therefore, when the water boiler 2 is filled with water and hot water is pumped again under steam pressure, the cold water from the open tank 1 is stored in the lower part of the water storage tank 6, and the temperature control valve 7 operates properly.

Since the temperature control valve 7 can independently adjust the hot water temperature at the outlet, when a plurality of temperature control valves 7 are installed in parallel, the hot water at the set temperature flows regardless of the status of the other temperature control valves, and the heat dissipation from the plurality of temperature control valves is improved. This allows containers 3 and 3a to be used in parallel.

〔Example〕

1 is an open tank, 2 is a water boiler installed at a lower position than the water level of the open tank 1, and 3 is a radiator to which hot water obtained from the water heater 2 is supplied; The kunk 1 is connected through a circulation pipe 4. 5 is a valve attached to the circulation pipe 4a that communicates the open tank 1 and the water boiler 2; 0 is a burner that heats the water boiler 2; the water boiler 2, which is heated by the burner lO, radiates hot water when the valve 5 is closed; Force feed toward vessel 3. The valve 5 opens when the water boiler 2 starts empty heating, and in the embodiment, it is composed of a check valve that stops the flow from the water boiler 2 to the open tank 1. Other means include a pressure detection switch of the water boiler 2 and a pressure detection switch. This can be realized in combination with an electric valve or by a combination of a temperature sensor attached to the circulation pipe 4 at the outlet of the water boiler 2 and the electric valve. When steam is sent to the circulation pipe and reaches a high temperature, the valve 5 is opened.

6 is a water storage tank attached to a circulation pipe 4b that communicates the water boiler 2 and the radiator 3; 7 is a temperature control valve attached to the circulation pipe 4b that communicates the water storage tank 6 and the radiator 3;
The high temperature input side of the temperature control valve 7 is connected to the upper inlet 6a of the water storage tank 6 through a bypass pipe 8. 9 is water storage tank 6
The bypass pipe 8 and the communication pipe 9 are equipped with check valves 8a and 9a that stop the flow from the temperature control valve 7 side. The hot water to be pumped from the water boiler 2 to the radiator 3 is connected to the connecting pipe 9.
so as not to return directly to the open tank 1 via the

Also, a check valve 8a attached to the bypass pipe 8 ensures that when the water boiler 2 sucks water from the open tank 2, the water from the water storage tank 6 always returns to the water boiler on the circulation pipe 4b side.

In other words, a part of the hot water pumped from the water boiler 2 to the radiator 3 is stored in the upper part of the water storage tank 6, and by ensuring that this hot water is returned to the hot water vυ can 2, when the water boiler 2 is full of water, The water temperature becomes high and the hot water starts to be pumped toward the radiator again in a short time, and the amount of cold water stored in the water storage tank 6 is large, so that the temperature control valve 7 works effectively.

〔effect〕

As described above, in this invention, the water boiler 2 is heated by the function of the water storage tank 6.
Cold water can be held in the middle of the circulation pipe 4b that pressure-feeds hot water from the radiator 3 to the radiator 3, and the temperature control valve 7.1! :By combining these, it was possible to supply hot water at the desired temperature to the radiator 3. For this reason, the radiator 3 can now be freely selected from high-temperature types to low-temperature types, and the radiator 3 that matches the room to be heated can now be used.

In addition, since the desired hot water temperature is obtained by mixing the low temperature water obtained from the lower outlet 6b of the water storage tank 6 and the high temperature water obtained from the water boiler 2, the desired temperature can be achieved by arranging the temperature control valve 7 in parallel. of hot water was obtained from each temperature control valve 7, 7a, and by connecting a radiator 3, 3a to each temperature control valve 7, 7a, the parallel use of radiators could be put to practical use for the first time.

[Brief explanation of the drawing]

The drawing is a sectional view of a main part of this invention.

Claims (2)

[Claims] (1) An open tank 1, a water boiler 2 provided at a lower position than the open tank 1, and a radiator 3 to which hot water from the water heater 2 is supplied are provided, and the open tank 1, the water boiler 2, the radiator 3, and the open tank 1 are provided. At the same time, a valve 5 is attached to the circulation pipe 4a that communicates the open tank 1 and the water boiling can 2, which opens when the water boiling can 2 starts running dry. In a hot water circulation system that flows into the water boiler 2 when the valve 5 is closed and pressure-feeds the hot water in the water boiler 2 from the radiator 3 to the open tank 1 at steam pressure, the water in the middle of the circulation pipe 4b that communicates the water boiler 2 and the radiator 3. A water storage tank 6 is provided in the water storage tank 6, an upper inlet 6a of the water storage tank 6 is connected to the water boiler 2, a lower outlet 6b is connected to the radiator 3, and a temperature control valve 7 is provided in the circulation pipe 4b that communicates the water storage tank 6 and the radiator 3. A communication pipe 9 is provided to connect the high temperature input side of the temperature control valve 7 and the upper inlet 6a of the water storage tank 6 with a bypass pipe 8, and to communicate the lower outlet 6b of the water storage tank 6 with the open tank 1. A hot water heating device characterized in that a pipe 9 is provided with a check valve 9a that stops the flow from the temperature control valve 7 side. (2) A plurality of temperature control valves 7 are provided which are connected to the lower outlet 6b of the water storage tank 6 and the bypass pipe 8, and each outlet of the temperature control valve 7 is connected to a different radiator 3, 3a. A hot water heating device according to claim 1.