JPH0138430Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an expansion tank installed in a circulation circuit for solar heat collection, hot water heating, etc.

(Prior Art) Conventionally, a resin expansion tank has been provided in a circulation circuit for the purpose of absorbing the expansion of circulating water, replenishing the circulating water, and separating and discharging air in the circulating water. Such an expansion tank is a hot water storage tank (A) as shown in Figure 4.
It is fixed to the side of the expansion tank (C) by a mounting bracket (B), and a convex part (D) is integrally formed on the flat surface of the expansion tank (C) to improve strength.

(Problem to be solved by the invention) However, in such a conventional example, the outer casing (E) becomes larger in the lateral direction by the size of the expansion tank (C), and in addition, the expansion tank (C) also has only a convex portion (D). It was not strong enough because it was intended to provide anti-pressure properties.

(Means for Solving the Problems) The present invention is an attempt to solve such problems, and the expansion tank is formed into a cylindrical body having a substantially triangular planar shape with a curved bottom surface along the hot water storage tank. Concave grooves are formed in the vertical direction on the planes on both sides of the top of the cylindrical body, and supporting metal fittings are arranged within these grooves, and both upper and lower ends of the supporting metal fittings are fixed to mounting seats provided in the hot water storage tank. .

(Function) In terms of strength, the bottom of the expansion tank is a curved surface, so there is no problem in terms of strength, but grooves are formed in the vertical direction on the planes on both sides of the top, which is a problem in terms of strength. Since the expansion tank is mounted and supported by the mounting fittings, the flat portion has a reinforcing effect due to the mounting fittings in addition to the reinforcing effect due to the provision of the groove. Further, since the expansion tank has a substantially triangular planar shape, the expansion tank can be disposed at a corner of the square exterior casing.

(Example) Figure 1 is a perspective view showing an example of the present invention.
1 is a hot water storage tank, 2 is a resin expansion tank attached to the side wall of the hot water storage tank 1, and 3 is an exterior casing. Although not shown when the hot water storage tank 1 is used for collecting solar heat, a circulation circuit is formed by connecting the heat exchanger and the heat collector in the hot water storage tank 1 through a circulation path with a circulation pump, The expansion tank 2 is interposed in series in this circulation circuit. FIG. 2 is an enlarged cross-sectional view of the main part of FIG. 1. The expansion tank 2 is approximately triangular when viewed from above, and its base 2a is formed in an arc shape along the curvature of the hot water storage tank 1 to form a curved bottom surface 21. The cylinder body 20 has a substantially triangular planar shape, and the top side 22 of the cylinder body 20 has flat surfaces 2 on both sides.
3 and 24 are integrally formed with grooves 25 in the vertical direction at their central portions. Note that 26 is an injection hole provided on the upper surface of the expansion tank 2. Reference numeral 27 denotes a U-shaped mounting bracket, and the mounting bracket 27 is fitted into the groove 25, and its upper and lower ends are fixed to upper and lower mounting seats 28 provided on the side wall of the hot water tank 1 with screws or the like. . 4 is an exterior casing.

In the above configuration, the expansion tank 2 is installed by first placing the expansion tank 2 on the mounting seat 28 installed below the hot water tank 1, then fitting the mounting bracket 27 into the groove 25, and fitting the mounting bracket 27 into the groove 25 at both upper and lower ends. the upper and lower mounting seats 2
8 with screws, etc., and then the expansion tank 2 and the circulation circuit are connected.

(Effects of the invention) As explained above, according to the invention, the expansion tank is formed into a cylindrical body with a planar substantially triangular shape. The expansion tank fits between the hot water storage tanks, making the whole system more compact. In addition, since the expansion tank has a curved bottom surface and grooves are formed vertically on the planes on both sides of the apex, the expansion tank has sufficient strength, and the grooves can be supported with mounting brackets. This adds a reinforcing effect, making it satisfactory in terms of strength.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the present invention;
The figure is an enlarged cross-sectional view of the same main part, FIG. 3 is a side view of the same main part, and FIG. 4 is a vertical cross-sectional view showing a conventional example. DESCRIPTION OF SYMBOLS 1... Hot water tank, 2... Expansion tank, 21... Bottom surface, 22... Top side, 23... Plane, 24... Plane, 25... Concave groove, 27... Mounting bracket, 28...
Mounting seat.

Claims (1)

[Scope of utility model registration request] The expansion tank attached to the side wall of the hot water storage tank is formed into a substantially triangular cylindrical body having a curved plane along the hot water storage tank, and grooves are formed in the vertical direction on the planes on both sides of the top of the cylindrical body. An expansion tank characterized in that a support metal fitting is disposed within the groove, and both upper and lower ends of the support metal fitting are fixed to mounting seats provided in the hot water storage tank.