JPH0521448Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to a hot water heating system for an automobile that uses fluid heated by the engine to heat the interior of the vehicle.

[Technical background of the invention and its problems]

In general, a hot water heating system for a car causes liquid heated by cooling the engine to flow into a heater core installed inside the car, and the heater core exchanges heat with air sent from a fan to heat the liquid.
It is designed to leak into the car.

In a heating device with such a structure, a water valve is provided in the middle of an inflow path where liquid flows from the engine to the heater core or an outflow path where liquid returns from the engine to the coater core. The flow rate is controlled. In other words, the heating temperature is controlled by the water valve.

Conventionally, the above-mentioned water valve has been used for the purpose of adjusting the flow rate with good response to the operation of an operating section installed on an instrument panel inside the car, and also because it is necessary to connect the above-mentioned operating section with a link mechanism etc. For the purpose of simplifying the configuration and ensuring reliable operation, the heater core was installed on the inside of the vehicle near the heater core, and was connected to the engine side and the heater core side through heater hoses. Therefore, when repairing or replacing the heater valve, it is necessary to remove the two heater hoses from the water valve in a narrow space inside the vehicle, resulting in extremely poor work efficiency. Moreover, when the heater hose was removed from the water valve inside the car, the liquid remaining in the water valve could drip into the car interior, making the inside of the car dirty. Moreover, in order to eliminate such a problem, a water valve may be installed in the engine room. However, if installed in the engine room, not only will the responsiveness of the flow rate adjustment deteriorate as described above, causing discomfort to the operator, but the distance between the water valve and the operating section will become longer, causing a problem between the two. The connection configuration for connection becomes complicated, resulting in increased costs and unstable operation.

[Purpose of invention]

The object of this invention is to provide an extremely useful hot water heating system for an automobile that has both the advantages of installing a water valve inside the car and the advantages of installing it in the engine room.

[Summary of the idea]

This invention is based on a hot water heating system for an automobile in which the flow rate of fluid heated by the engine and flowing through a heater core installed inside the vehicle is controlled by a water valve installed near the heater core. , which is attached through a panel that separates the engine compartment from the interior of the vehicle, has one end open to the engine compartment and the other end to the interior of the vehicle, and has a connection hole in a side wall located inside the vehicle that communicates with the heater core. A valve case having a perforated cylindrical shape is formed, and a connection part is formed in the valve case to which a heater hose is fitted from the engine room side and flows out the fluid heated by the engine to the engine room side. A valve seat body having a through hole bored at a position corresponding to the connecting hole on the inside of the vehicle, and an internal passageway that connects the connecting portion and the through hole and allows the fluid to flow from the heater hose to the heater core. a hook provided on the valve seat that elastically engages with the valve case and removably holds the valve seat on the valve case in a liquid-tight state; and a hook near the other end of the valve case. The valve seat body is slidably disposed in a liquid-tight manner on the closed end surface of the valve seat body, one end of which is removably connected to a lever connected to an operating section provided inside the vehicle, and the other end of which is connected to a lever connected to an operating section provided in the vehicle interior, and the other end is connected to a lever connected to an operating section provided inside the vehicle. a valve stem extending inwardly into the internal passage of the valve seat body through an opening at the end; and a valve stem provided in the internal passage of the valve seat body and fixed to the other end of the valve stem, which is attached to the valve stem when the operating portion is operated. The hot water heating system for an automobile is characterized by comprising a valve that opens and closes the internal passage by sliding the valve stem and controls the flow rate of the fluid flowing from the engine to the heater core.

[Example of idea]

An embodiment of this invention will be described below with reference to the drawings. 1 in Figure 1 indicates engine room 2 and car interior 3
This is a separate panel. An engine 4 is disposed in the engine room 2, and a hot water type heating device 5 is disposed in the vehicle interior 3. This heating device 5
is equipped with a heater core 6, and this heater core 6
The engine 4 is in communication with the engine 4 through an inlet passage 7 and an outlet passage 8. That is, the liquid heated by cooling the engine 4 flows into the heater core 6 from the inflow path 7, exchanges heat with the wind sent from a fan (not shown), and flows out from the outflow path 8. ing.

A water valve 9 is provided in the middle of the outflow path 8 . This water valve 9 includes a valve case 12 that passes through the panel 1 through a grommet 11. This valve case 12
Both ends in the axial direction are open, and a connecting hole 13 is bored in the middle of the peripheral wall. Further, the valve case 12 has a large diameter portion 12a, a medium diameter portion 12b, and a small diameter portion 1 so that the diameter gradually decreases from one end located on the engine room 2 side to the other end.
2c. Further, a valve seat body 14 is housed in the valve case 12 . This valve seat body 14 is formed into a cylindrical shape with one end located on the inside 3 side of the vehicle closed, for example, of synthetic resin, and a tip portion of this end elastically engages with the end surface of the small diameter portion 12c. A hook 15 is formed protrudingly.
By elastically deforming the hook 15 inward in the radial direction, the distal end thereof can be disengaged from the end surface of the small diameter portion 12a.
Further, the large diameter portion 1 of the valve case 12 of the valve seat body 14
The other end protruding from 2a toward the engine room 2 is formed as a connecting portion 16. A heater hose 17 forming the outflow path 8 is connected to this connection portion 16 . Further, on the outer circumferential surface of the valve seat body 14, two
Steps 18 are formed at certain locations. An O-ring 19 is fitted onto each of these stepped portions 18, and when the valve seat body 14 is inserted into the valve case 12 from the large diameter portion 12a side, the O-ring 19 is inserted into the inner peripheral surface of the valve case 12. Small diameter portion 12c and medium diameter portion 12
b, the middle diameter part 12b and the large diameter part 12a
They are designed to be in liquid-tight pressure contact with each other at the boundary between the two. In other words, the valve seat body 14 is connected to the valve case 12.
It is designed to be able to be attached and detached in a liquid-tight manner. In addition, a valve body 23 consisting of a valve stem 21 and a valve 22 provided at the tip of the valve stem 21 is attached to the valve seat body 14 by attaching the valve stem 21 to the closed end surface of the valve seat body 14 with an O-ring 24a. Therefore, it is slidably provided in a liquid-tight state. This valve body 23 is attached to the valve stem 2.
1, the valve 22 approaches and separates from a valve seat 25 formed in an internal passage 24 of the valve seat body 14, thereby blocking or opening the internal passage 24. Further, a through hole 26 communicating with the connection hole 13 is formed in the valve seat body 14 on the downstream side of the valve seat 25 . One end of a first connecting pipe 27 is liquid-tightly connected to the connecting hole 13 by, for example, brazing. This first connecting pipe 2
The other end of 7 is similarly liquid-tightly connected to an end member 28 of the heater core 6, and communicates with an internal passage (not shown) of the heater core 6 via this end member 28. Furthermore, the end member 28 is provided with a second connecting pipe 2.
One end of 9 is connected in a liquid-tight manner. The other end of the second connecting pipe 29 projects from the grommet 11 into the engine room 2, and the projecting end is connected to the engine 4 via a heater hose 31.
A lever 32 for slidingly operating the valve stem 21 is detachably connected to the protruding end of the valve stem 21 of the valve body 23.

According to the hot water heating device having such a structure, by sliding the valve stem 21 of the valve body 23 via the lever 32, the degree of opening of the internal passage 24 of the valve seat body 14 by the valve 22 can be adjusted. , the amount of hot water returning from this internal passage 24 to the engine 4,
In other words, the amount of hot water flowing into the heater core 6 can be adjusted. Therefore, by operating the lever 32, the heating temperature by the heater core 6 can be controlled.

By the way, when repairing or replacing the water valve 9, first operate the valve stem 2 from inside the vehicle 3.
After removing the lever 32 from the valve seat body 14, the hook 15 of the valve seat body 14 is elastically deformed in the diametrical direction to disengage its tip from the end face of the small diameter portion 12c of the valve case 12, and then the valve seat body 14 is is pushed in the direction in which the hook 15 enters the small diameter portion 12c. Next, the valve seat body 14 is operated from the engine room 2 side.
After removing the heater hose 17 from the connection part 16 of the valve seat body 14, if the valve seat body 14 is pulled
Since the valve body 23 and the valve body 23 can be removed from the valve case 12, they can be repaired, inspected, replaced, etc. In other words, water valve 9
Repairs and replacements can be carried out from the engine room 2 side, which improves work efficiency.
4 and the valve stem 21 are pulled out to the engine compartment 2 side, even if the liquid remaining in the valve case 12 leaks out at that time, it will not contaminate the inside of the car 3 like in the past, so there will be no problem. No.

[Effect of idea]

As mentioned above, this idea is based on the idea that the valve case constituting the water valve is provided by penetrating the panel that separates the engine room and the interior of the car, and the valve body is removably housed in the valve case in a liquid-tight state. The valve seat body is provided so that it can be pulled out to the engine room side. Therefore, the water valve can be repaired or replaced in the engine compartment, which improves work efficiency compared to the conventional work performed from inside the vehicle, which has a narrow work space. In addition, when the valve seat body is removed, the liquid remaining in the valve case flows out into the engine room, but it does not drip into the interior of the car and contaminate it, unlike in the past. In addition, the valve seat body is provided with a hook that elastically engages with the valve case and holds the valve seat body in a liquid-tight state within the valve case, allowing the valve seat body to be removed from the valve case. In such cases, the valve seat body can be pulled out to the engine room by simply operating the hook and disengaging it from the valve case, improving work efficiency when repairing or replacing the water valve. .

[Brief explanation of drawings]

The drawings show an embodiment of this invention, and FIG. 1 is a schematic diagram of the connection between the engine and the heater core, and FIG. 2 is an enlarged sectional view of the water valve. 1...Panel, 2...Engine room, 3...
Vehicle interior, 6... Heater core, 9... Water valve, 12... Valve case, 14... Valve seat body, 2
3... Valve body.

Claims (1)

[Scope of utility model registration request] In a hot water heating system for a car, the flow rate of fluid heated by the engine and flowing through a heater core installed inside the car is controlled by a water valve installed near the heater core. It is attached through a panel that separates the inside of the car, one end opens into the engine compartment, the other end opens into the inside of the car, and a connection hole communicating with the heater core is bored in the side wall located inside the car. A cylindrical valve case is formed, and a connection part is formed in the valve case to which a heater hose is fitted, which is fitted from the engine room side and flows out the fluid heated by the engine to the engine room side. a valve seat body having a through hole bored at a position corresponding to the connecting hole and an internal passageway that communicates the connecting portion and the through hole and allows the fluid to flow from the heater hose to the heater core; a hook provided on the seat body that elastically engages with the valve case and removably holds the valve seat body on the valve case in a liquid-tight state; and a hook located near the other end of the valve case. It is slidably disposed in a fluid-tight manner on the closed end surface of the valve body, one end is removably connected to a lever connected to an operating section provided inside the vehicle, and the other end passes through the opening at the other end of the valve case. a valve stem that extends inwardly into the internal passage of the valve seat body; and a valve stem that is provided in the internal passage of the valve seat body and is fixed to the other end of the valve stem and that is attached to the valve stem when the operating section is operated. A hot water type heating system for an automobile, comprising: a valve that opens and closes the internal passage by sliding movement of the valve to control the flow rate of the fluid flowing from the engine to the heater core.