JPS60139520A - Hot water type heater for vehicle - Google Patents

Abstract

PURPOSE:To facilitate the flow control of fluid with the use of a single control panel to aim at reducing the required number of component parts and the cost of production for a heater, by disposing a single fluid distributor valve at a branch-off point for cooling pipe lines connected to a plurality of heater cores to control the supply amount of cooling water. CONSTITUTION:When a valve element 3 in the valve body casing 2 of a flow distributor valve 1 rotates in the direction C, variations in the flow rate of cooling water due to variations in opening degrees set between the ports 21 through 23 of the casing 2 and the ports 35 through 37 in a cooling water passage 34 are set such that the flow rate of cooling water for the rear heater core 13 gradually increases in the vicinity of the time point when the flow rate of cooling water for the front heater core 12 reaches its maximum value. Further, the valve element 3 may be rotated by a desired angle by manipulating a control knob 43 on a heater control panel 43 in an instrument board 15, and therefore, cooling water flowing through the fluid distributor valve 1 is distributed to the front and rear heater cores 12, 13. Further, in view of the fact that the flow rates of cooling water flowing through the front and rear cores 12, 13 are proportional to the heat radiation amounts of the cores 12, 13, the heating capacities of the front and rear heater cores 12, 13 may be determined on a single control panel by controlling the flow rates of cooling water in the cores 12, 13 and the air flow rate of a blower.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field] The present invention relates to a hot water heater for a vehicle having a plurality of heater cores provided in a vehicle interior.

[Prior Art] In a vehicle hot water heater that uses engine cooling water, a heater core consisting of a plurality of hot water heat exchangers is provided in the vehicle interior as necessary. In this case, conventionally, the cooling water passage through which the cooling water supplied from the engine's water jacket flows is separated into a plurality of cooling water passages, and a control valve is provided in the cooling water passage leading to each heater core to adjust the cooling water flow rate. The heating capacity of each heater core was controlled by operating each adjustment valve. For example, if heater cores that use engine cooling water are installed in the front and rear seats of a car, the cooling water supplied from the engine's water jacket is guided through cooling water piping, and the cooling water piping A branch path is provided to separate the cooling water between the front seat heater core and the rear seat heater core, and a control valve for the front seat is installed between this branch path and the front seat heater core to adjust the flow rate of the cooling water. A control valve for the rear seat is also installed between the branch road and the heater core of the rear seat, and an operation panel for the front seat that operates the control valve of the heater core of the front seat is installed on the instrument panel in the vehicle interior, and An operation panel for rear seats was provided to operate the control valve for the heater core. For this reason, one cooling water piping branch, two control valves that adjust the flow rate of the cooling water, and two operation panels that operate the two control valves, each located at a position that can be operated by the crew, are required. , The above configuration has a large number of parts and has high production costs.
Since there are many connections between each of the above parts and the cooling water pipes, it is easy to cause water leakage, and the installation work is also difficult. To provide a hot water type heater for a vehicle in which cooling water supplied from a water jacket of an end can be easily separated into a plurality of hot water type heater cores by a panel, and the flow rate of each cooling water can be easily controlled.

[Configuration of the Invention] The vehicle hot water heater of the present invention is a vehicle hot water heater in which a plurality of heater cores provided in a vehicle interior and a water jacket of an engine are communicated with a water jacket of an engine through cooling water piping.
A fluid branching valve is provided at a branch point of cooling water piping to the plurality of heater cores, and the amount of cooling water supplied to the plurality of heater cores is controlled by operating the fluid branching valve.

[Effects of the Invention] The vehicle hot water heater of the present invention having the above configuration has the following effects.

b) By operating one fluid branch valve provided in a cooling water pipe that supplies cooling water, it is possible to control the amount of cooling water supplied to a plurality of heater cores provided in the vehicle interior.

口) The number of connecting parts of cooling water piping can be reduced, eliminating the cause of cooling water leakage.

c) Production costs are reduced and installation work is facilitated by reducing the number of other parts and connecting parts of cooling water piping.

[Example] Next, the vehicle hot water type heater of the present invention will be explained based on the example shown in FIGS. 1 to 4.

The front seat and the rear of the automobile IO were equipped with a front heater core 12 for heating the front seats and a blower 1113A for heating the rear seats, each having a blower 12A for heating the front seats and the rear seats independently. A cooling water pipe 1 is provided with a rear heater core 13 for heating the rear seats, and circulates cooling water supplied from the water jacket of the engine 11.
4 distributes cooling water to each heater core 12.13;
A fluid branch valve l is provided to regulate and guide the supply flow rate. The fluid branch valve 1 is made of resin and consists of a valve case 2 having a cylindrical shape inside and a valve body 3 extending downward.The valve case 2 is designed to allow cooling water supplied from the engine 11 to flow into the fluid branch valve l. An inlet 21 provided on the cylindrical surface, and a front heater core outlet 22 and inflow provided on the cylindrical surface on a straight line with the cooling water inflow direction so as to supply the inflowed cooling water to the front heater core 12. A rear heater core outlet 23 is provided at a plane that is bent approximately 80 degrees from the cooling water inflow direction so as to supply the cooled water to the rear heater core 13.

The valve case 2 is a main valve case 2A that includes a valve body 3 therein.
The main valve case 2A has an inlet 21 and an outlet 22 for the front heater core.
The auxiliary valve case 2B has a rear heater core outlet 23 and a space 24 in which the valve body 3 is fitted and a side abutment 25 for holding the valve body 3 is installed. It is provided to be held within the main valve case 2A, and the valve body 3
The side abutment portion 25 is integrally joined at the inner thigh by ultrasonic welding or the like. The inlet 21 of the valve case 2, the outlet 22 for the front heater core, and the outlet 23 for the rear heater core are connected to the inlet 21 with a cylindrical inlet pipe 21A, and a cylindrical inlet pipe 21A at the front to facilitate connection with the cooling water pipe 14. Heater core outlet 22
An outflow pipe 22A to the cylindrical front heater core 12 and a cylindrical rear heater core 13 to the rear heater core outlet 23.
Outflow pipes 23A to the rear heater core 13 are formed integrally with each other, and the rear heater core outlet 23 is formed to serve as a constriction part that determines the maximum flow rate to the rear heater core 13. Reference numeral 3 denotes a valve body having a cylindrical shape, and is provided in the valve case 2 so that its outer peripheral surface is in contact with the inlet 21 and the outlet 22 for the front heater core, and its flat part is in contact with the outlet 23 for the rear heater core. There is. The outer peripheral surface of the valve body 3 is held by a space 24 on the inner surface of the valve case 2 and a side abutment part 25 having a spring member 25B, and a recess 33 is provided at the center of the lower surface.
is fitted into a protrusion 33A provided in the sub-valve case 2B corresponding to the recess 33 of the valve body 3, so that the valve body 3 is mounted so as to rotate smoothly within the valve case 2. ing. The upper side of the valve body 3 (the side opposite to the side of the sub-valve case 2B side)
At the center of the valve case 2, there is a cylindrical protrusion 31 on the outside of the valve case 2.
is protruded through an O-ring 32 which is a sealing member, and a valve operating lever 41 is fitted with a screw 42 on the outer surface of the projection 31 of the valve body 3 in order to operate the rotation of the valve body 3 from the outside within the valve case 2. The tightening is fixed by the valve operating lever 4.
Reference numeral 1 denotes a heater operation panel 4 which is a valve element operating means provided to operate the rotation of the valve element 3 in the instrument panel 15 of the automobile IO.
The control cable 44 including a wire 44A is connected to the operation knob 43A of the fluid branch valve 1, and the valve body 3 in the fluid branch valve 1 is driven by operating the operation knob 43A of the heater operation panel 43 in the vehicle interior. The valve body 3 has an inlet 2 inside.
1. Cooling water passages 34 are provided to flow cooling water corresponding to each day to the front heater core outlet 22 and the rear heater core outlet 23, and the cooling water passage 34 corresponds to the inlet 21 and flows through the cooling water. a valve inlet 35 that allows the cooling water to flow in, a front heater core valve outlet 38 that allows the cooling water that has flowed in from the valve inlet 35 to flow out to the front heater core outlet 22, and a front heater core valve outlet 38 that allows the cooling water that has flowed in from the valve inlet 35 to flow into the rear heater core. It has a valve outlet 37 for the heater core to flow out to the outlet 23 for the heater core.

In this embodiment, the valve opening degree of the fluid branch valve 1 is set in the front heater core 12. When using the rear heater core 13, even if only the front heater core 12 is used, the rear heater core 1
Never use only 3.

When using the rear heater core 13, use the front heater core 12.
Since it is normal to use the same values, when the valve body 3 is rotated in the direction shown by the solid line C in FIG. and each day (35, 36, 37) provided in the cooling water passage 34 of the valve body 3.
The change in the flow rate of cooling water due to the change in the opening degree of each is expressed as
As shown in the figure, the setting is such that the flow rate of cooling water to the rear heater core 13 gradually increases from the vicinity where the flow rate of cooling water to the front heater core 12 reaches its maximum. When a passenger operates the operation knob 43A of the heater operation panel 43 of the instrument panel 15, the valve body 3 in the valve case 2 is rotated at an angle desired by the passenger, and the cooling water flowing through the fluid branch valve l is rotated as shown in FIG. As shown in FIG. 1, the flow rate of the cooling water flowing through the front heater core 12 and the rear heater core 13 and passing through the heater cores 12 and 13 is proportional to the amount of heat dissipated from the heater cores 12.13. 1
The heating capacity of the front heater core 12 and the rear heater core 13 is determined by the flow rate of cooling water flowing through the heater core 3 and the air volume of the blower.

The present invention is not limited to the above-mentioned embodiments, and various modifications can be made as described below.

l) The cooling water outlet of the fluid branch valve is not limited to two locations as described above, but can be changed depending on the number of hot water heaters; for example, the cooling water outlet may be provided at multiple locations on the outer periphery of the cylindrical valve body. or provide multiple locations on the flat surface of the valve body,
Or they may be combined.

2) The valve body is not limited to a cylindrical shape, and other shapes such as a spherical shape or a conical shape are also applicable.

3) The opening degree of each cooling water outlet of the fluid branch valve is not limited as described above, and can be set in various ways.

4) The fluid branch valve can also be used to control the plurality of heater cores by guiding the cooling water that has undergone heat exchange and flows out from the plurality of heater cores back into the water jacket of the engine.

[Brief explanation of the drawing]

Figure 1 is a top view showing the structure of a vehicle hot water heater;
The figure is a side view showing the structure of a vehicle hot water heater, Figure 3 is a top sectional view of the fluid branch valve of the present invention, and Figure 4 is A--A in Figure 3.
A sectional view, FIG. 5 is a BB sectional view of FIG. 4, and FIG. 6 is a relationship diagram in which the vertical axis shows the flow rate of cooling water discharged from the fluid branching valve and the horizontal axis shows the rotational stroke of the valve body. In the diagram: 1. Fluid branch valve 2. Valve case 3. Valve body 12. Front heater core 13. Rear heater core
14...Cooling water pipe 21...Inflow port 22...Flower outlet for front heater core 23...Outlet port 3 for rear heater core
4. Cooling water passage agent Kenji Ishiguro

Claims (1)

[Scope of Claims] l) In a hot water heater for a vehicle in which a plurality of heater cores provided in a vehicle interior and a water jacket of an engine are communicated with a water jacket of an engine through cooling water piping, the cooling water piping is branched to the plurality of heater cores. A hot water type heater for a vehicle, characterized in that one fluid branching valve is provided at each point, and the amount of cooling water supplied to the plurality of heater cores is controlled by operating the fluid branching valve. 2) The fluid branching valve includes a cylindrical valve case having one inlet for cooling water to flow in and a plurality of outlets for cooling water to flow out, and a cylindrical valve case that is rotatably fitted into the valve case and has an internal structure. 2. The hot water heater for a vehicle according to claim 1, further comprising a cylindrical valve body provided with cooling water passages corresponding to the - number of inlets and the plurality of outlet ports. 3) The valve case is characterized in that the inflow pipes forming the - number of inflow ports and the respective outflow pipes forming the plurality of outflow ports are integrally formed. The vehicle hot water heater described. 4) The valve case has a cylindrical shape with a bottom, and the outlet has two
Claim 2 or 3, wherein the inflow port and one of the outflow ports are formed on a straight line on a cylindrical surface, and the other outflow port is formed on a bottom surface. hot water heater for vehicles. 5) The heater cores are installed in the front seats and rear seats in the vehicle interior, and the outlet of the fluid branch valve controls the supply flow rate of cooling water to the heater cores of the front seats and rear seats to the heater core of the rear seats. Claims 1, 2, and 3 are provided to reduce the supply flow rate of cooling water and then reduce the supply flow rate of cooling water to the heater core of the front seat. 4. The vehicle hot water heater according to any one of Item 4. 6) Claim 2, wherein the valve body of the fluid branch valve is connected to one valve body operating means provided at a position on an instrument panel inside the vehicle that can be operated by a passenger. The vehicle hot water heater according to any one of Items 3, 4, and 5.