JPH0731048Y2 - Heater with hot water heat exchanger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a heater in which a hot water heat exchanger is attached to a heater and warmed by hot water obtained by the hot water heat exchanger.

[Prior art] A hot water heat exchanger, a storage tank, and a circulation pump are attached to a heater that directly collects heat from combustion heat. There is a heater that heats the water in a hot water heat exchanger before returning it to the storage tank and circulating it again. In this heater, by disposing the radiator in the adjacent room, it is possible to simultaneously heat two rooms, which are separated by a wall or a door.

[Problems to be solved by the invention] In this heater, the circulation pump is always operated to heat two chambers at the same time, and the circulation pump is stopped to heat only one chamber with a combustor. is doing. For this reason, the hot water heat exchanger is filled with water when the circulation pump is stopped, and when heating one room with the main body side where the combustor is attached, boiling occurs in the hot water heat exchanger, causing a large amount of water. The steam was released to cause an abnormal condition.

For this reason, there is a proposal to switch the combustion gas flow path on the combustor side so that the heating gas does not flow to the hot water heat exchanger, but completely stopping the heating gas flow is a large-scale and complicated configuration. It is necessary and not a preferred method.

This invention deals with a method in which when the heating by the radiator is stopped, the inside of the hot water heat exchanger is emptied to stop the discharge of a large amount of steam. However, this method also makes it difficult to completely remove water from the hot water heat exchanger, and the remaining water becomes steam and is sent to the storage tank. For this reason, the storage tank and the hot water pipe are heated by steam to a high temperature, and the attachment part between the hot water pipe and the storage tank uses a highly heat-resistant material, and the storage tank is also required to have heat resistance. there were.

[Means for Solving Problems] This invention is intended to prevent the abnormal state from occurring even when the circulation pump is stopped and the hot water heat exchanger is heated, and the material with low heat resistance can be used for the parts. A hot water heat exchanger 1 is attached to a combustion gas flow path of a heater, and a storage tank 2 connected to the hot water heat exchanger 1, a circulation pump 3 connected to the storage tank 2, and a radiator connected to the circulation pump 3 Four
In the heater which is provided with and the radiator 4 and the hot water heat exchanger 1 are connected to form a hot water circulation passage, the storage tank 2 is attached at a lower position than the hot water heat exchanger 1, and the hot water heat exchanger 1 The tip of the hot water pipe 5 that connects the storage tank 2 with the storage tank 2 is positioned in the water of the storage tank, and the vicinity of the storage tank 2 attachment part of the hot water pipe 5 is configured by a double pipe, and the hot water of the outer pipe 6 of the double pipe is formed. The tip of the heat exchanger 1 side is in close contact with the hot water pipe 5, and the other end of the outer pipe 6 is attached to the tank mounting pipe 7 provided in the storage tank 2 to hold the hot water pipe 5.

[Operation] In this invention, since the hot water heat exchanger 5 is arranged at a higher position than the storage tank 2, when the circulation pump 3 is stopped to stop the heating by the radiator 4, steam is generated in the hot water heat exchanger 1. The generated water is directly pumped to the storage tank 2 in the hot water heat exchanger 1, and also pumped to the storage tank 2 via the radiator 4 and the circulation pump 3. Therefore, the hot water heat exchanger 1 is in an empty state, and the remaining water drops become steam and the radiator 4
It is sent to the storage tank 2 via the other hot water pipe 5 while pushing down the water level of the circulation pipe on the side to almost the same as the water level of the storage tank 2.

On the other hand, since the tip of the hot water pipe 5 is submerged in the water of the storage tank 2, the steam generated in the hot water heat exchanger 1 is absorbed by the water that has entered the tip of the hot water pipe 5, and the tip of the hot water pipe 5 is stored in the storage tank 2. As in the case of opening to the upper space, the problem could be solved in the high temperature in which the storage tank 2 was filled with high temperature steam.

In addition, the connection between the storage tank 2 and the hot water pipe 5 is 2
Since the outer pipe 6 is composed of a heavy pipe, the end of the hot water heat exchanger 1 side is closely attached to the hot water pipe 5, and the other end is attached to the tank attachment pipe 7 and attached to the storage tank 2, the hot water becomes high temperature. The heat transfer from the pipe 5 to the outer pipe 6 is centered on the end portion on the side of the hot water heat exchanger 1, and the outer pipe 6 is exposed to the outside air so that the temperature of the mounting portion with the tank mounting pipe 7 is not low. .

[Example] 1 is a hot water heat exchanger, 2 is a storage tank mounted at a lower position than the hot water heat exchanger 1, 3 is a circulation pump, and these are housed and mounted in a heater frame 8. 9 is a heating burner, 10 is a combustion chamber, 11 is a heat exchanger for indoor air,
The hot water heat exchanger 1 is attached to a combustion gas passage extending from the combustion chamber 10 to the heat exchanger 11.

Reference numeral 4 denotes a radiator composed of a hot water floor panel and a fan coil unit mounted separately from the heater frame 8. The water in the storage tank 2 is sent to the radiator 4 sucked by the circulation pump 3, and the radiator is The water cooled in 4 is returned to the hot water heat exchanger 1 for heating. Further, the water heated by the hot water heat exchanger 1 is sent to and stored in the storage tank 2. A hot water pipe 5 connects the hot water heat exchanger 1 and the storage tank 2, and the tip of the hot water pipe 5 is submerged in the water in the storage tank 2.

Reference numeral 6 denotes an outer pipe provided near the attachment portion of the hot water pipe 5 to the storage tank 2. The hot water pipe 5 and the outer pipe 6 form a double pipe, and the end portion of the outer pipe 6 on the hot water heat exchanger 1 side. Is closely attached to the hot water pipe 5. Reference numeral 7 denotes a tank mounting pipe of the hot water pipe 5, the end of the outer pipe 6 is attached to the tank mounting pipe 7, and the hot water pipe 5 is mounted to the storage tank 2.

[Explanation of Effect] As described above, in the present invention, when the hot water heat exchanger 1 becomes empty by the generated steam, the generated steam is held in the hot water pipe 5 without being diffused to the outside and is stored in the storage tank. The heat of the hot water pipe 5 which has been recovered in the inside 2 and has reached a high temperature is transferred to the storage tank 2 through the outer pipe 6 and the tank mounting pipe 7, so that the storage tank 2 and the mounting pipe 7 are generally low in heat resistance grade. The material is now available.

Therefore, the storage tank 2 is used during heating without using the radiator 4.
It is possible to prevent the trouble of ejecting steam from the outside, and according to this invention structure, the parts used do not use expensive high heat resistant materials and can be manufactured at low cost, making it extremely practical hot water heat exchange. I was able to get a heater with a heater.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of this device, and FIG. 2 is a sectional view of the usage state of this device. 1 ... Hot water heat exchanger, 2 ... Storage tank, 3 ...
Circulation pump, 4 radiator, 5 hot water pipe, 6
Outer pipe, 7 ... Tank mounting pipe

Claims (1)

[Scope of utility model registration request] 1. A storage tank 2 having a hot water heat exchanger 1 attached to a combustion gas passage of a heater and connected to the hot water heat exchanger 1, and a circulation pump 3 connected to the storage tank 2.
And a radiator 4 connected to the circulation pump 3, and the radiator 4 and the hot water heat exchanger 1 are connected to form a hot water circulation flow path. In the heater, the storage tank 2 has the hot water heat exchanger 1 Installed at a lower position, the tip of the hot water pipe 5 connecting the hot water heat exchanger 1 and the storage tank 2 is positioned in the water of the storage tank 2, and the vicinity of the storage tank 2 mounting portion of the hot water pipe 5 is a double pipe. The outer pipe 6 of the double pipe is attached to the hot water heat exchanger 1 side end with the hot water pipe 5
A heater with a hot water heat exchanger, characterized in that the other end of the outer pipe 6 is attached to a tank mounting pipe 7 provided in the storage tank 2 to hold the hot water pipe 5.