JPH09145070A - Hot water type heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hot water type heater which improves water filling for heating. SOLUTION: In a hot water type heater which is provided with a heat source unit having a hot water tank 5, a pump 7 for hot water circulation and a heat exchanger 1 for heating and provided with a hot water circuit for heating connected to a return side pipeline through a bypass pipeline 21 and a plurality of heat radiators 4 and 11 connected to the hot water circuit for heating through a hot water control valve 10 to be supplied with hot water from the heat source unit and checks the passage of water automatically in sequence for the heat radiators, the heat source unit performs a burning operation for a specified time length and a temperature change is detected in the heating water circulated to the heat source unit to check the passage of water through the heat radiators.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water type heating device for circulating hot water to a radiator such as a hot water mat, and more particularly to automatic radiator filling and automatic water flow check.

[0002]

2. Description of the Related Art Conventionally, in this type of hot water type heating device, water filling work is performed to remove air from a plurality of radiators and pipes connected to a heat source device after the device is installed (the air in the pipe is filled with water). However, when filling water, check the flow of each pipe while circulating hot water or check the temperature rise by touching it with your hand to determine the water flow status and completion of water filling. Was there.

[0003]

However, in such a method, the operator must wait until the water filling is completed for confirmation, and further, the confirmation work takes a long time by visual inspection or contact, especially in a collective property or the like. In that case, the number of processing was small and the efficiency was extremely poor.

In view of the above circumstances, an object of the present invention is to circulate heating water heated by a heat source device and to automatically detect the return water temperature when the water is filled, thereby making it possible to efficiently check water flow. Type heating device.

[0005]

That is, according to the present invention as set forth in claim 1, it has a hot water tank, a hot water circulation pump, and a heating heat exchanger, and is connected to a return side pipe line through a bypass pipe line. A heat source device provided with a heating hot water circuit, and a plurality of radiators connected to the heating hot water circuit via a hot water control valve, and hot water is supplied from the heat source device, for each radiator In a hot water heating device that automatically checks water flow sequentially, the heat source unit is burned for a predetermined time, and the temperature change of the heating water circulated in the heat source unit is detected to check the water flow of the radiator. It is characterized by

According to the second aspect of the present invention, the combustion period of the heat source unit at the time of confirming water flow is about 1 / the heating water circulation time.
It is characterized in that it is 3 or less.

Further, the present invention according to claim 3 is characterized in that the combustion amount of the heat source machine at the time of confirming the water flow is from 1/2 to the maximum.

Further, the present invention according to claim 4 is characterized in that the flow rate of the bypass pipe is narrowed at the time of confirmation of water flow and at the time of combustion operation of the heat source unit for water flow confirmation.

Further, the present invention according to claim 5 is characterized in that the rise in the water temperature at the time of confirming the water flow is set to 10 deg or less and 5 deg or less.

[0010]

FIG. 1 is a schematic view of a hot water type heating apparatus of the present invention which is constructed by connecting a hot water mat as a radiator and a hot water air conditioner to a heat source machine.

First, the heat source machine will be described.
Is a heating heat exchanger equipped with a gas burner 2, and is connected to the heating heat exchanger 1 and a hot water air conditioner 4 of a high temperature side load serving as a radiator is provided in a high temperature side outward conduit 3 that constitutes a heating hot water circuit.
Is connected to the hot water tank 5 and the hot water tank 5 is connected to the high temperature side forward pipeline 3 to form a bypass pipeline 21. The hot water circulating pump 7 is provided in the return pipeline 6 that exits the hot water tank 5.
A water circulation sensor 8 is interposed to form a circulation circuit that returns to the heat exchanger 1 for heating, and a plurality of valves are provided in the low temperature side forward pipeline 9 that is branched from the return pipeline 6 that passes through the above water sensor 8. A hot water control valve 10 is provided, and each hot water control valve 10 is connected to a plurality of hot water mats 11 as low-temperature side loads serving as radiators, and a return path 12 thereof is connected to a hot water tank 5 through a hot water air conditioner 4. Merge into the conduit heading for.

Reference numeral 13 is a water level electrode arranged in the hot water tank 5, 14 is a tap water conduit for guiding water to the hot water tank 5, and a water injection solenoid valve 15 serving as an automatic water supply device is provided.

Reference numeral 16 is a proportional valve attached to a gas pipe 17 connected to the gas burner 2 serving as a heat source, 18 is a solenoid valve, and 19 is a solenoid valve.
Is a former solenoid valve.

Reference numeral 20 denotes a remote control panel, which is usually installed in a kitchen or the like, and is capable of remotely controlling the combustion operation and stoppage of equipment through a control device S installed in the machine.

Next, FIG. 2 showing changes in hot water temperature during combustion operation
Based on the above, the water filling operation (water filling operation), which is a feature of the present invention, will be described.

This water filling operation is automatically executed by a microcomputer installed in the control unit S by an operation from the remote control panel 20 after a predetermined installation work.

When the water filling operation is started, first, the burner 2 of the heating heat exchanger 1 is ignited for a predetermined time, and at the same time, the hot water circulating pump 7 is operated to send out the heating water. At this time, the inlet temperature and the outlet temperature of the heating heat exchanger 1 are detected by the sensors, sequentially input to the control device S, and the temperature changes are monitored by the microcomputer.

That is, when the hot water control valve 10 and the like are closed and hot water is not supplied to the radiators 4 and 11, the water heated by the heating heat exchanger 1 is provided in the high temperature side outward conduit 3. It circulates in the heat source unit through the bypass pipe line 21 and returns to the heat exchanger 1 for total heating. At this time, the amount of heat radiated in the circulation circuit is very small, and since the low temperature water does not return from the radiators 4 and 11, the water inside the heat source unit continues to circulate, and the inlet temperature of the heat exchanger is shown by the dotted line in the figure. Thus, the water temperature is kept substantially constant.

On the other hand, when the hot water control valve 10 or the like is opened to supply hot water to the radiators 4 and 11, the radiators 4 and 1 are
The hot water poured into 1 is about ⅕ to ⅓ of the bypass flow rate, but the low temperature water continues to return until the temperature rises, so the water temperature inside the heat source unit is as shown by the solid line in the figure. Gradually decreases.

Therefore, by constantly monitoring the inlet temperature and the outlet temperature and checking whether the water temperature is maintained at a constant temperature or is decreasing, it can be determined whether water is being passed or not. If it rises again as shown in the figure after it has dropped, it can be judged that the filling of the heating water is complete.

Further, in the present invention, the following measures are taken in order to make the water filling operation more reliable.

The first is the combustion period T1 of the heat source machine during water passage.
Is about 1/3 or less of the time T2 during which the heating water goes around the circulation path. By appropriately setting the combustion period T1, the temperature of the heating water sent from the heat exchanger 1 for heating is lowered, the temperature of the water is lowered by the low-temperature water from the radiators 4 and 11, and the second temperature is raised by the heated heating water. It becomes possible to clearly judge the series of processes of hot water change.

Second, the combustion amount of the heat source machine at this time is halved.
Above is to set to the maximum. By accelerating the rise of the water temperature, the determination by the water temperature detection becomes easy.

Third, although not shown, the bypass conduit 21
It is to install a valve and so on to throttle the bypass flow rate. By reducing the bypass flow rate, it is possible to prevent the water flow to the radiators 4 and 11 from increasing, and it is possible to prevent the change in the water temperature from becoming gradual, and it becomes easy to detect the temperature change due to the water flow.

Fourth, increase in water temperature is less than 10 deg and less than 5 deg.
It is to suppress. If the temperature rise of the whole circulating water is made as small as possible, it is possible to check the water flow through a large number of radiators without cooling, which is efficient.

The above is the water filling operation of the hot water heating apparatus. However, when a plurality of radiators are connected to the heat source device as in the present embodiment, the hot water control valve 10 or the like automatically operates. The hot water load is switched in sequence to check the water filling and water flow.

[0027]

As described above, according to the present invention as set forth in claim 1, the heat source device is burned for a predetermined time and the temperature change of the heating water circulated in the heat source device is detected to detect the heat dissipation of the radiator. Since the water flow is checked, reliable water filling is automatically performed even if a plurality of radiators are connected, and the equipment installation work is greatly simplified.

Further, according to the present invention as set forth in claim 2, the combustion time of the heat source machine is set to about 1/3 or less of the heating water circulation time, so that the process of the hot water change can be clearly determined. Become.

Further, according to the present invention as set forth in claim 3, since the combustion amount of the heat source unit is set to 1/2 or more to the maximum,
The rise of the water temperature is improved, and the judgment by the water temperature detection becomes easy.

Further, according to the present invention as set forth in claim 4, since the flow rate of the bypass pipe is reduced during the confirmation of water flow and during the combustion operation of the heat source device for water flow confirmation, The water flow to the vessel increases and it becomes easier to detect temperature changes due to water flow.

As described above, by facilitating the water temperature detection by the above measures, the water filling operation becomes more reliable and the reliability of the equipment is improved.

Further, according to the present invention as set forth in claim 5, since the rise in the water temperature due to combustion is set to 10 deg or less and 5 deg,
The temperature rise of the whole circulating water at the time of water flow check is suppressed, and it becomes possible to check a large number of radiators without cooling, improving work efficiency.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a hot water heating device according to an embodiment of the present invention.

FIG. 2 is a diagram showing changes in hot water temperature during combustion operation.

[Explanation of symbols]

 1 Heat Exchanger for Heating 4 Radiator (Hot Water Air Conditioner) 5 Hot Water Tank 7 Pump for Hot Water Circulation 10 Hot Water Control Valve 11 Radiator (Hot Water Mat) 21 Bypass Pipeline T1 Combustion Period of Heat Source Machine T2 Heating Water Circulation Time

Claims (5)

[Claims] 1. A heat source device having a hot water tank, a hot water circulation pump, and a heating heat exchanger, and a heat source device having a heating hot water circuit connected to a return side pipe via a bypass pipe, and a hot water control valve. In the hot water heating device, which is connected to the heating hot water circuit via a plurality of radiators to which hot water is supplied from the heat source device, and which automatically and automatically confirms water flow to each radiator, A hot water heating device, characterized in that the heat source device is burned for a predetermined time and the temperature change of the heating water circulated in the heat source device is detected to confirm the water flow through the radiator. 2. The hot water heating apparatus according to claim 1, wherein the combustion period of the heat source unit at the time of confirming the water flow is about 1/3 or less of the heating water circulation time. 3. The amount of combustion of the heat source unit when confirming water flow is 1 /
The hot water heating device according to claim 1 or 2, wherein the number is from 2 to the maximum. 4. The method according to claim 1, wherein the flow rate of the bypass pipe is reduced when confirming water flow and during combustion operation of the heat source unit for confirming water flow. Hot water heating system. 5. The hot water type heating device according to claim 1, wherein the rise of the water temperature at the time of confirming the water flow is 10 deg or less and 5 deg or less.