JPS6350522Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a heating valve device that is provided integrally with a heater core in a hot water type heating device mainly used in automobiles.

Automotive heating systems are generally configured to circulate hot water heated by the engine between a heater core, and other heat exchangers such as an oil cooler for cooling engine oil are connected in series with the hot water circuit. May be inserted. In such a case, hot water needs to constantly flow through the heat exchanger, while the heater core needs to control the inflow of hot water on and off in order to adjust the temperature of the blown air. Therefore, a bypass passage that bypasses the heater core is provided in the hot water circuit, and a three-way valve is arranged on the inflow side of the heater core, and by switching this three-way valve, it is possible to select whether to flow hot water to the heater core or bypass the heater core. A specific example of a conventional three-way valve is shown in FIG.

In FIG. 1, a valve chamber 3 in a case 2 in which a valve body 1 is movably arranged has an inlet passage 4, one outlet passage 5 parallel to this inlet passage 4, and an inlet passage 4.
and one outlet passage 5 are connected to the other outlet passage 6 in a perpendicular direction. The valve chamber 3
The openings 5a of the two outlet passages 5, 6 open to the
6a forms a right angle, and the opening 6 of the other outlet passage 6
The valve body 1 is attached to the valve seat 7 formed in the case 1 around a.
is seated. The inlet passage 4 connects to the heat exchanger,
One outlet passage 5 is connected to the heater core, and the other outlet passage 6 is connected to the bypass passage. The valve body 1 has guide opening/closing pieces 8a, 8 on both its upper and lower sides.
When the valve stem 9 is pulled up, the valve body 1 is separated from the valve seat 7, and at the same time the lower guide opening/closing piece 8b opens the opening 6a of the outlet passage 6. When the upper guide opening/closing piece 8a closes the opening 5a of the outlet passage 5, the inlet passage 4 and the other outlet passage 6 are brought into communication.

However, since the upper guide opening/closing piece 8a slides along the inner wall of the case 1, in order to reduce the frictional resistance caused by the sliding, the guiding opening/closing piece 8a
A gap is provided between a and case 1.
Therefore, even when there was no need to flow hot water into the heater core (when it was cold), hot water leaked into the heater core through the gap, and the amount of leakage was about 5%. For this reason, a problem arises in that the heater core is heated by the leaked hot water, making it difficult to accurately control the temperature of the blown air.

Furthermore, since the three-way valve is constructed separately from the heater core, it is necessary to install piping in each of the three directions, making the piping work troublesome and making it impossible to make the heating device more compact.

Therefore, in this invention, valve seats that sit on both sides of the valve body are provided around the openings of the two outlet passages to eliminate the amount of leakage, and the valve seats are configured integrally with the tank of the heater core. It is an object of the present invention to provide a heating valve device that can reduce the labor involved in piping work and can be made more compact.

That is, in this invention, a case is formed integrally with the tank member constituting the outer part of the tank of the heater core, and a valve chamber, an inlet passage and two outlet passages opening to the valve chamber are formed in the case, The two outlet passages have openings to the valve chamber facing each other with the valve chamber interposed therebetween, and one of the outlet passages is formed in an inlet port formed in the tank of the heater core, and the other outlet passage is formed in the tank of the heater core. A valve body is movably inserted into the valve chamber, and the valve body is connected to one of two valve seats provided at the openings of the two outlet passages depending on its position. A heating valve device is provided which is integrated with a heater core that is seated on one side.

Examples of this invention will be described below with reference to the drawings.

In FIGS. 2 and 3, a heating valve device 10
is provided integrally with the heater core 11.First, the outline of the heater core 11 will be explained.The heater core 11 has tank members 1 made of resin on both sides.
A tank 12 in which 2a and 12b are joined is disposed, and a partition wall 13 is provided at the center of one tank 12 to form an inflow chamber 14 and an outflow chamber 15.
The inflow chamber 14 and the outflow chamber 15 are connected to the other tank (not shown) via respective tubes 16, and the tubes 16 are provided with a large number of fins 17. The tank member 12a of the one tank 12 has an inflow chamber 14 and an outflow chamber 15.
An inlet 18 and an outlet 19 are formed which are connected to the inlet 18 and the outlet chamber 14, and the hot water entering the outlet chamber 14 from the inlet 18 flows into the tube 16, the other tank (not shown),
It is configured to be discharged from an outlet 19 through a tube 16 and an outlet chamber 15. The case 20 of the heating valve device 10 is integrally molded with the tank member 12a constituting the outer portion of the one tank 12, and the heating valve device 10 is integrated with the heater core 11.

Inside the case 20 of the heating valve device 10, a valve chamber 22 in which a valve body 21 described below is movably arranged, an inlet passage 23 and two outlet passages 24 and 25 connected to the valve chamber 22 are arranged in a T-shape. It is formed so that it intersects with the The inlet passage 23 is a passage through which hot water is supplied, and is open to the side of the valve chamber 22. One outlet passage 24 is connected to the inlet 18 of the heater core 11, and the other outlet passage 25 is L-shaped and connected to the outlet 19 of the heater core 11 so as to bypass the heater core 11. The outlet passages 24 and 25 are connected to the valve body 2 on both sides of the valve chamber 22.
The openings 24a and 25 are opened in the direction of movement of
a are provided at opposing positions with the valve chamber 22 interposed therebetween. Around the openings 24a, 25a, valve seats 27a, 27b are formed in a seat member 26 fixed to the case 20 on one outlet passage 24 side, and on the case 20 on the other outlet passage 25 side.

As shown in FIG. 4, the valve body 21 is constructed by sandwiching a resin disc 21c between rubber gaskets 21a and 21b, for example. This valve body 21
Seat surfaces 28a and 28b are formed around both end surfaces of the gaskets 21a and 21b so as to abut against the valve seats 27a and 27b. In addition, this valve body 2
A guide 29 is provided on one of the gaskets 21b, and this guide 29 is slidably inserted into the opening 25a of the other outlet passage 25. The valve body 21 and the guide 29 are fixed to a valve stem 30 inserted into the center thereof via snap rings 31a, 31b and a washer 32. The other end of the valve stem 20 protrudes to the outside through a presser member 33 that presses the seat member 26 and seals one outlet passage 24, and is connected to an operating section (not shown) via a wire or the like. The operating force in the axial direction is transmitted from this operating portion to the valve stem 30, and the valve body 21 is moved to the valve seats 27a, 27b.
seated on either side.

Note that 34a and 34b are pipe mounting flanges that are provided integrally with the case 20 around the ends of the inlet passage 23 and the other outlet passage 25.

In the above configuration, as shown by the solid line in Figure 2,
When the valve body 21 is seated on the left valve seat 27b, the opening 25a of the other outlet passage 25 is closed, so the hot water that has entered the inlet passage 23 is
It flows into one outlet passage 24, is sent to the inlet 18 of the heater core 11, passes through the inside of the heater core 11, and is discharged from the outlet 19 of the heater core. For this reason,
The heater core 11 is heated to provide space.

When the valve stem 30 is pulled and the valve body 21 is moved from the position shown by the solid line in FIG. Opening 2 of outlet passage 25 of
5a is opened, and the opening 24a of one outlet passage 24 is closed. For this reason, the entrance passage 2
3 does not pass through the heater core 11, but is discharged as it is through the other outlet passage 25, and the heater core 11 is not heated. One exit passage 2
Since the opening 24a of No. 4 is closed when the valve body 21 comes into contact with the valve seat 27a, the amount of hot water leaking to the one outlet passage 24 side at this time is eliminated.

As described above, according to this invention, the openings of the two outlet passages that open into the valve chamber in which the valve body is movably arranged are provided at opposite positions, and the valve body is arranged around the opening of the outlet passage. Since a valve seat is provided on which the body is seated on both sides, leakage can be eliminated. Furthermore, since the heating valve device is integrated with the heater core, piping work is easy and the heating device can be made compact.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing a conventional three-way valve for heating equipment, Fig. 2 is a sectional view showing an embodiment of this invention, Fig. 3 is a sectional view taken along line A-A in Fig. 2, and Fig. 4 is the same as above. FIG. 2 is an exploded perspective view showing a valve body, a guide, and a valve stem used in the present invention. 10... Heating valve device, 11... Heater core,
12...tank, 12a...tank member, 18...
...Inlet, 19...Outlet, 20...Case, 2
1... Valve body, 22... Valve chamber, 23... Inlet passage,
24, 25... Outlet passage, 24a, 25a... Opening, 27a, 27b... Valve seat.

Claims (1)

[Scope of utility model registration request] It has a case 20 that is integrally formed with a tank member 12a that constitutes the outer part of the tank 12 of the heater core 11, which is made up of a tank 12, fins 17, and tubes 16. An inlet passage 23 and two outlet passages 24 and 25 are formed, which open to the valve chamber 22.
25a are opposed to each other with the valve chamber 22 in between, and one of the outlet passages 24 and 25 is connected to the inlet 18 formed in the tank 12 of the heater core 11, and the other is connected to the inlet 18 formed in the tank 12 of the heater core 11. A valve body 21 is movably inserted into the valve chamber 22, and the valve body 21 is provided in the openings 24a and 25a of the two outlet passages 24 and 25 depending on its position. two valve seats 2
A heating valve device characterized in that it is seated on either one of 7a and 27b.