JPH0345047Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention efficiently combines high-temperature heating using a fan convector, etc., and low-temperature heating using floor heating panels, etc. using a single heat source device. The present invention relates to a hot water heating system.

[Prior Art] FIG. 2 shows a conventional hot water heating system that performs high-temperature heating and low-temperature heating using a common heat source device.

1 is a heat source device, heats hot water with an internal heat exchanger 2, and circulates high-temperature water of around 80°C into a high-temperature radiator 4 and a low-temperature radiator 5 via hot water circulation circuits 3 and 3'. Temperature control is performed by a thermistor 6.

[Problems with the Prior Art] As described above, in the conventional hot water heating device, the temperature of the hot water circulating in the low temperature radiator 5 and the temperature circulating in the high temperature radiator 4 are the same, so the temperature of the hot water circulating in the low temperature radiator 5 is the same. This results in excessively high temperatures. for example,
The low-temperature radiator 5, such as a floor heating panel, is characterized by gentle heating, so it is better not to feel hot.
Therefore, in the past, a restriction was placed on the low-temperature radiator 5 side.
The amount of circulating water is adjusted and the structure of the heat radiation channels (tubes) is designed with ingenuity. However, this approach has problems such as a complicated structure, poor temperature control, and poor efficiency.

The present invention was proposed in view of these points, and the purpose is to efficiently perform ideal high temperature heating and low temperature heating using a single heat source device with a simple configuration. .

[Means to solve the problem] The configuration of the present invention is as follows.

Hot water from the heat exchanger 2 of the heat source device 1 reaches the high-temperature radiator 4 via the hot water outgoing pipe 3a, and hot water from the high-temperature radiator 4 returns to the expansion tank 7 via the hot water return pipe 3b. , a high temperature heating circuit 3 having a circulation circuit configuration in which the hot water returned to the expansion tank 7 reaches the heat exchanger 2 again; a circulation pump 8 is inserted between the expansion tank 7 and the heat exchanger 2; 8 and a branch pipe 10 branched between the heat exchanger 2 and the low-temperature water pipe 9
The low-temperature heating has a circulating circuit configuration in which hot water reaches the low-temperature radiator 5 via the low-temperature radiator 5, flows through the low-temperature return pipe 9b, joins the hot water return pipe 3b, and returns to the expansion tank 7. a circuit 9; a low-temperature independent operation circuit 12 that branches off the hot water inlet pipe 3a of the high-temperature heating circuit 3 and is connected to the low-temperature inlet pipe 9a of the low-temperature heating circuit 9; and an A valve 11 attached to the branch pipe 10.
and B attached to the low temperature islanding circuit 12.
A valve 12a, a C valve 14 which is the hot water inlet pipe 3a of the high temperature heating circuit 3 and is installed downstream of the branch part of the low temperature independent operation circuit 12, and a C valve 14 which is the hot water inlet pipe 3a and is attached to the downstream side of the branch part of the low temperature independent operation circuit 12. When the thermistor 6 attached to the outlet of the exchanger 2 and the high temperature radiator 4 and low temperature radiator 5 are used, the A valve 11 and the C valve 14 are opened, and the B valve 12a is closed, and the circulation pump is turned on. 8, when only the high temperature radiator 4 side is used and the low temperature radiator 5 side is stopped,
Close the A valve 11 and the B valve 12a, and leave the C valve 14 open. When only the low temperature radiator 5 side is used and the high temperature radiator 4 side is stopped, the A valve 11 and the C valve 14 are closed. A controller 1 performs control to close the B valve 12a, open the B valve 12a, and further throttle the output of the gas burner 16 using the thermistor 6.
5. A hot water heating system comprising:

[Function] a When the high temperature radiator 4 and the low temperature radiator 5 are used at the same time, the controller 15 closes the B valve 12a, opens the A valve 11 and the C valve 14, and closes the circulation pump 8.
drive.

As a result, high-temperature water from the heat exchanger 2 circulates in the high-temperature radiator 4 side, and low-temperature water whose temperature has been lowered by radiating heat from the high-temperature radiator 4 circulates in the low-temperature radiator 5.

b When only high temperature radiator 4 side is used (With the effect of a mentioned above) Close A valve 11.

c. When only the low-temperature radiator 5 side is used (with the effect of a) closed, valve A 11 and valve C 14 are closed, valve B 12a is opened, and the thermistor 6 is used to throttle the output of the gas burner 16.

[Example] Figure 1 shows an example of the above-mentioned present invention.
1 is a heat source machine using gas as fuel, 2 is a gas burner 1
In the heat exchanger 3 heated by the heat exchanger 6, the hot water from the heat exchanger 2 reaches the high temperature radiator 4 via the hot water outgoing pipe 3a, and the hot water from the high temperature radiator 4 flows through the hot water return pipe 3b. This is a high-temperature heating circuit in which hot water returns to the expansion tank 7 via the circulation pump 8 and returns to the heat exchanger 2 via the circulation pump 8.

Reference numeral 6 denotes a thermistor attached to the hot water pipe 3a coming out of the heat exchanger 2 in the high temperature heating circuit 3.

9 is a high temperature heating circuit 3 that comes out from the expansion tank 7
This is a low-temperature heating circuit in which a branch pipe 10 branching from a hot water outgoing pipe 3a leads to a low-temperature radiator 5, and is connected to a hot water return pipe 3b coming out of the low-temperature radiator 5.

11 is an A valve attached to the branch pipe 10. Reference numeral 12 designates a low temperature independent operation circuit connecting the hot water supply pipe 3a and the low temperature water supply pipe 9a, and 12a designates a B valve attached to this circuit. Reference numeral 13 denotes a flow switch (flow rate detector) installed in the hot water inlet pipe 3a of the high temperature heating circuit 3 in order to detect the flow of hot water in the high temperature heating circuit 3.

14 is a C valve attached to the downstream side of the flow switch 11 in the hot water outgoing pipe 3a.

15 is a controller which performs the following control.

a When the high temperature radiator 4 and the low temperature radiator 5 are used at the same time, the controller 15 opens the A valve 11 and the C valve 14, closes the B valve 12a, and operates the circulation pump 8.

As a result, hot water flows into both the high temperature heating circuit 3 and the low temperature heating circuit 9.

b When only high temperature radiator 4 side is used (With the effect of a mentioned above) Close A valve 11.

As a result, the flow in the low temperature heating circuit 9 is stopped.

c. When only the low-temperature radiator 5 side is used (with the action of a) closed, valve A 11 and valve C 14 are opened, and valve B 12a is opened.

As a result, hot water flows through heat exchanger 2 → thermistor 6 → B valve 12a → low temperature radiator 5 → expansion tank 7 → circulation pump 8 → heat exchanger 2, and the thermistor 6 detects the water temperature and lowers the water temperature to low temperature. Reduce the gas burner 16 so that

In addition, in the case of the embodiment, when both the high temperature side and the low temperature side are used and the use of the high temperature side is stopped, the flow of hot water in the high temperature heating circuit 3 stops, so the flow switch 13 detects this and controls it. A signal is sent to the device 15 to perform the control in c.

However, the usage status on the high temperature side may be directly input to the controller 15 from the high temperature radiator 4.

[Effects of the present invention] The present invention has the above-described structure and operation, and can be expected to have the following effects.

a When the high-temperature radiator 4 and the low-temperature radiator 5 are used simultaneously, the low-temperature hot water once returned to the expansion tank 7 circulates through the low-temperature radiator 5 via the low-temperature circulation circuit 9, so the low-temperature radiator 5 side It is possible to increase the efficiency of heating and provide gentle and ideal low-temperature heating.

b When only the low-temperature radiator 5 is used, the controller 15 throttles the gas burner 16 based on the input from the thermistor 6, and the low-temperature hot water is radiated from the low-temperature independent operation circuit 12 via the low-temperature heating circuit 9. Since the water is circulated through the vessel 5, the low temperature radiator 5 can be used with low temperature water even when the high temperature radiator 4 is not used.

[Brief explanation of drawings]

FIG. 1 is an embodiment of a hot water heating device according to the present invention, and FIG. 2 is an explanatory diagram of a conventional hot water heating device. 1... heat source machine, 2... heat exchanger, 3... high temperature heating circuit, 4... high temperature radiator, 5... low temperature radiator,
6... Thermistor, 7... Expansion tank, 8... Circulation pump, 9... Low temperature heating circuit, 13... Flow switch, 15... Controller, 16... Gas burner.

Claims (1)

[Claim for Utility Model Registration] Hot water from the heat exchanger 2 of the heat source device 1 reaches the high-temperature radiator 4 via the hot water outgoing pipe 3a, and hot water from the high-temperature radiator 4 flows through the hot water return pipe 3b. A high-temperature heating circuit 3 having a circulation circuit configuration in which the hot water returns to the expansion tank 7 via the expansion tank 7 and returns to the heat exchanger 2 again, and a circulation pump between the expansion tank 7 and the heat exchanger 2. 8 is inserted, and a low-temperature water supply pipe 9 is connected from a branch pipe 10 that branches between the circulation pump 8 and the heat exchanger 2.
The low-temperature heating has a circulating circuit configuration in which hot water reaches the low-temperature radiator 5 via the low-temperature radiator 5, flows through the low-temperature return pipe 9b, joins the hot water return pipe 3b, and returns to the expansion tank 7. a circuit 9; a low-temperature independent operation circuit 12 that branches off the hot water inlet pipe 3a of the high-temperature heating circuit 3 and is connected to the low-temperature inlet pipe 9a of the low-temperature heating circuit 9; and an A valve 11 attached to the branch pipe 10.
and B attached to the low temperature islanding circuit 12.
A valve 12a, a C valve 14 which is the hot water inlet pipe 3a of the high temperature heating circuit 3 and is installed downstream of the branch part of the low temperature independent operation circuit 12, and a C valve 14 which is the hot water inlet pipe 3a and is attached to the downstream side of the branch part of the low temperature independent operation circuit 12. When the thermistor 6 attached to the outlet of the exchanger 2 and the high temperature radiator 4 and low temperature radiator 5 are used, the A valve 11 and the C valve 14 are opened, and the B valve 12a is closed, and the circulation pump is turned on. 8, when only the high temperature radiator 4 side is used and the low temperature radiator 5 side is stopped,
Close the A valve 11 and the B valve 12a, and leave the C valve 14 open.When only the low temperature radiator 5 side is used and the high temperature radiator 4 side is stopped, the A valve 11 and the C valve 14 are closed. A controller 1 performs control to close the B valve 12a, open the B valve 12a, and further throttle the output of the gas burner 16 using the thermistor 6.
5. A hot water heating system comprising: