JPS622465Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a heat pipe type solar water heater using a heat pipe.

Generally, the heat pipe used in this type of solar water heater has its condensing part inserted into the hot water storage tank, but if there is no water in the hot water tank, the temperature of the heat pipe will decrease in summer. but
The temperature of the heat pipe can reach high temperatures of 120°C to 130°C, and in winter, the temperature of the heat pipe can drop below zero. For this reason, the amount of expansion of heat pipes differs depending on the season, and for a heat pipe with a length of approximately 2 m, the amount of expansion differs depending on the season.
A difference of ~3 mm occurs. Therefore, it is necessary to fix the heat pipe in such a way as to absorb this amount of expansion while relaxing the stress at the fixing portion of the heat pipe.

Conventionally, heat pipes have been held using a structure as shown in FIG. That is, a support plate 12 having a prepared hole is provided in the heat collector case 11, and the heat pipe 15 is attached to the evaporation part 15a of the heat pipe 15 with a tapping screw 14 through a material 13 with low thermal conductivity such as rubber. The heat pipe 15 was held within the heat collector case 11 by fixing the holding plate 16. However, in this configuration, in order to absorb the amount of expansion of the heat pipe 15 and relieve stress on the fixed portion, it is necessary to increase the number of fixing points, and since the amount of expansion of the heat pipe 15 varies depending on the season, The heat pipe 1 is easily deformed as the durability of the fixing part decreases and the number of fasteners for fixing increases.
Since the fixing work is performed between the five fins 17, there is a problem that the fixing work takes a very long time.

The present invention has been devised to solve the above-mentioned conventional problems, and the present invention will be explained below based on the drawings showing one embodiment thereof. In FIGS. 1 to 3, 1 is an evaporation section 2 of a plurality of heat pipes 2.
A is the heat collector case with interior, 3 is the heat collector case 1
The hot water storage tank section 3 is connected to the hot water storage tank section 3, and the condensing section 2b of the heat pipe 2 is inserted into the hot water storage tank section 3. 4 is a sunlight transmitting body disposed above the heat collector case 1.

And the heat collector case 1 of the heat pipe 2
The holding and fixing is carried out by the following structure. That is, a support plate 5 is fixed to the heat collector case 1, and a locking member is provided on the support plate 5, which has an umbrella-shaped elastic hook portion 6a at its tip, and is made of a synthetic resin with low thermal conductivity. 6 is fixed with screws 7, and on the other hand, a U-shaped notch 9 is provided in a retaining plate 8 that holds the evaporating part 2a of the heat pipe 2 at a position corresponding to the locking member 6. 9 to the tip of the locking member 6 and forcefully pushing it downward, the elastic hook portion 6a of the locking member 6 moves in the direction of arrow A.
Since the holding plate 8 contracts in the direction, the holding plate 8 moves downward and stops at the upper surface 6b of the locking member 6. At this time, when the upper surface of the holding plate 8 passes the lower end of the elastic hook part 6a, the elastic hook part 6a of the locking member 6 returns to its original state due to elastic force, so that the lower end of the elastic hook part 6a and the notch 9 is engaged. Thereby, the heat pipe 2 is held and fixed within the heat collector case 1. Further, the lateral movement D of the heat pipe unit can be restricted by the relationship between the width B of the notch and the width C of the umbrella shaft 6C of the locking member 6, and the heat pipe has a large expansion difference depending on the seasonal temperature. The vertical movement E of the unit is determined by the depth dimension F of the notch 9.
By taking this into consideration, stress can be easily absorbed, so that no stress is applied to the holding portion of the heat pipe 2. Furthermore, a large number of L-shaped fins 10 are provided in the evaporation section 2a of the heat pipe 2.

In addition, in the above-mentioned example, the notch 9 is
Holding plate 8 that holds the evaporation section 2a of the heat pipe 2
Although the explanation has been given on the case where the fins 10 are provided in the evaporation section 2a of the heat pipe 2, the same effect as in the above embodiment can be obtained even if the cutout section 9 is provided on the fin 10 provided in the evaporation section 2a of the heat pipe 2.

As described above, according to the present invention, a locking member having an elastic hook portion at the tip and made of a synthetic resin with low thermal conductivity is disposed in the heat collector case, and the locking member is made of a synthetic resin with low thermal conductivity. A retaining plate that holds the fins or the evaporation section of the heat pipe provided in the fins is provided with a notch at a position corresponding to the locking member, and this notch is fitted into the tip of the locking member to form an elastic hook. Since the heat pipe is engaged with the notch, the heat pipe can be easily held and fixed to the heat collector case by simply pushing the heat pipe unit from the top of the heat collector case. It is something.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of a heat pipe type solar water heater showing an embodiment of the present invention, Fig. 2 is an exploded perspective view of the main parts of the water heater, and Fig. 3 is an enlarged view of the main parts. FIG. 4 is a vertical sectional view of a conventional heat pipe type solar water heater. 1... Heat collector case, 2... Heat pipe, 2
a... Evaporation part, 2b... Condensation part, 3... Hot water storage tank part, 6... Locking member, 6a... Elastic hook part,
8... Holding plate, 9... Notch, 10... Fin.

Claims (1)

[Scope of utility model registration request] The heat collector case includes a heat collector case containing an evaporation part of a heat pipe, and a hot water storage tank part connected to the heat collector case and into which a condensation part of the heat pipe is inserted. A locking member having an elastic hook part and made of a synthetic resin with low thermal conductivity is disposed, and the fin provided on the evaporation part of the heat pipe or the holding plate for holding the evaporation part of the heat pipe is A heat pipe type solar water heater, wherein a notch is provided at a position corresponding to the locking member, and the notch is fitted into the tip of the locking member to engage the elastic hook portion and the notch.