JPH068455Y2 - Hot water boiler - Google Patents

Description

[Detailed Description of the Invention] Industrial field of application The present invention relates to a hot water boiler used for hot water supply, bath, heating, etc. at home.

2. Description of the Related Art Conventionally, in this kind of hot water boiler, a return connection portion from a heat load such as a bath to the hot water circulation circuit has a structure as shown in FIG. That is, the return connection portion 1 is attached so as to penetrate the exterior body 2, and a temperature detector 3 is fixed to a portion of the return connection portion 1 inside the exterior body 2 with a screw 4. The temperature of the heat load was controlled.

Problems to be Solved by the Invention However, in such a structure, since the temperature detector 3 is fixed to the return joint 1 by the screw 4, when the temperature detector 3 is removed for maintenance or the like, first, There is a problem in that workability is extremely poor because the return connection unit 1 and the temperature detector 3 must be removed from the outer casing 2 together with the return connection unit 1.

Therefore, the present invention is to enable the temperature detector to be easily attached and detached without removing the return connection portion from the exterior body.

Means for Solving the Problems The technical means of the present invention for solving the above problems is to provide a flange having a mounting hole in the return connection portion, insert a temperature sensor in the mounting hole, and insert the temperature sensor into the end surface of the temperature sensor. And the flange surface are simultaneously pressed by using the spring property of the holding metal fitting.

Action The action of this technical means is as follows.

That is, by sliding the holding metal fitting along the flange surface, the pressing of the temperature detector to the return connection portion can be released, or the temperature detector can be attached again.

As a result, the temperature detector can be easily attached / detached, and the workability of attachment / detachment for maintenance or the like can be greatly improved.

Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1 and FIG. 2, 11 is a can body surrounded by an exterior body 12 and provided with a burner 13 and a baffle 14, and a heat exchanger 15 is attached to the water storage part. Reference numeral 16 is a hot water circulation circuit connected to the heat exchanger 15, and is a forward pipe 17,
It is composed of an outgoing connection portion 18, a return pipe 19, a return connection portion 20, and a circulation pump 21. In the return connection part 20,
A flange 23 having a mounting hole 22 is provided, and a temperature sensor 24 is inserted into the mounting hole 22 so that the end surface of the temperature sensor 24 and the surface of the flange 23 are simultaneously pressed by using the spring property of the holding metal fitting 25. There is. Reference numeral 26 is a bathtub that is an example of a heat load that is electrically connected to the outward connection portion 18 and the return connection portion 20 by the connection pipe 27.

Next, the operation of the configuration of this embodiment will be described.

The heat generated by the combustion of the burner 13 is transferred to the baffle 14
The heat exchange is promoted by the heat transfer to the water stored in the can 11. The warm water in the can body 11 is used for hot water supply or the like. On the other hand, the water in the bath 26 is circulated from the hot water circulation circuit 16 to the heat exchanger 15 by the circulation pump 21, receives the heat of the hot water in the can 11 and returns to the bath 26 to be warmed again. When the water temperature in the bathtub 26 reaches a predetermined temperature,
A temperature detector 24 attached to the return connection 20 detects the temperature and stops the operation of the circulation pump 21.
When the water temperature inside falls below a specified temperature, the temperature detector 2
4 again detects the temperature and starts the operation of the circulation pump 21. This controls the water temperature in the bathtub 26.

The temperature detector 24 is inserted into the mounting hole 22 of the return connection part 20 and is pressed against the surface of the flange 23 by utilizing the spring property of the holding metal fitting 25. Therefore, when removing the temperature detector 24 for maintenance or the like, the holding metal fitting 25 is slid along the surface of the flange 23 to release the pressing of the temperature sensor 24 to the return connection portion 20, or when the temperature sensor 24 is mounted, the holding metal fitting 25 is slid again along the surface of the flange 23. Then, the temperature detector 24 is attached to the return connection part 20. Since the spring property of the holding metal fitting 25 is utilized when the temperature detector 24 is attached, the temperature detector 24 cannot be easily removed. As shown in FIG. 1, by providing a concave hole 28 on the surface of the flange 23 and providing a convex protrusion 29 at a corresponding position of the holding metal fitting 25, the temperature detector 24 can be fixed to the return connection portion 20. It will be more certain. As a result, the temperature detector 24 can be easily attached and detached, and the workability of attachment and detachment during maintenance and the like can be greatly improved.

Effect of the Invention The present invention is designed so that the temperature sensor end face and the flange surface are simultaneously pressed down by using the spring property of the holding metal fitting, and the holding metal fitting is slid along the flange surface to attach and detach the temperature sensor. Moreover, since the spring property of the holding metal fitting is used when the temperature detector is mounted, the temperature detector cannot be easily disengaged. As a result, the work time during product assembly and maintenance can be shortened and workability can be greatly improved.

[Brief description of drawings]

FIG. 1 is an enlarged sectional view of a return connection portion of a hot water boiler according to an embodiment of the present invention, FIG. 2 is a sectional view of the same hot water boiler, and FIG. 3 is a sectional view of a return connection portion of a conventional hot water boiler. . 15 ... Heat exchanger, 16 ... Hot water circulation circuit, 20 ... Return connection part, 22 ... Mounting hole, 23 ... Flange, 24
…… Temperature detector, 25 …… Holding bracket.

Claims (2)

[Scope of utility model registration request] 1. A hot water circulation circuit for circulating hot water in a heat exchanger to a heat load, wherein a return connection portion from the heat load to the hot water circulation circuit is provided with a flange having a mounting hole, and the mounting hole is provided in the mounting hole. A hot water boiler configured to insert a temperature detector and press the end face of the temperature detector and the flange face at the same time by using the spring property of a holding metal fitting. 2. The hot water boiler according to claim 1, wherein the flange surface is provided with a concave hole and the holding metal member is provided with a convex projection.