JP4783311B2 - Vacuum double container for vehicle and cooling water circuit for vehicle engine - Google Patents

Description

  The present invention relates to an improvement in a vacuum double container for a vehicle and a cooling water circuit including the same.

  2. Description of the Related Art A vehicular regenerator that keeps cooling water warm is known. Since the vehicle heat accumulator is affected by vibration from the vehicle, measures against vibration are required.

Therefore, a vehicular regenerator that takes measures against vibration has been proposed (see, for example, Patent Document 1).
JP 2004-1623 A (FIGS. 8 and 9)

Patent document 1 is demonstrated based on the following figure.
FIG. 8 is a diagram for explaining the basic configuration of the prior art. As shown in FIG. 8A, a vehicle heat accumulator 100 includes an outer container 103 attached to a vehicle body 101 via stays 102, 102, and an outer container 103. This is a double container comprising an inner container 104 built in the container 103, a plug 105 fitted in the mouth of the inner container 104, and a liquid introduction pipe 106 and a liquid discharge pipe 107 that penetrate the plug 105.

  A seat 108 is provided in the inner container 104, and a pin 109 to be inserted into the seat 108 is provided in the outer container 103.

  The vehicle may be traveling or may not be traveling like a parked vehicle. When the vehicle is traveling, the vehicle body 101 vibrates due to road surface reaction force or the like. At this time, as shown in (a), a pin 109 is inserted into the seat 108 to mechanically connect the inner container 104 to the outer container 103 to prevent the inner container 104 from vibrating excessively.

  On the other hand, when the vehicle is not traveling, there is no need to fix the inner container 104, so the pin 109 is removed from the seat 108 as shown in FIG. When the pin 109 is removed, there is no concern that the heat stored in the inner container 104 is transferred to the outer container 103 via the pin 109. As a result, the heat storage property can be improved.

  By the way, in order to move the pin 109 forward and backward, the actuator 110 as indicated by an imaginary line is essential. In addition, the vehicle speed is detected by the vehicle speed sensor 111 and this information is transmitted to the control unit 112. When the control unit 112 determines that the vehicle speed is necessary, the actuator 110 is operated to move the pin 109 forward or backward.

That is, the conventional vehicle heat accumulator 100 requires the actuator 110 and the control unit 112 that controls the actuator 110, so that the structure becomes complicated and expensive.
Therefore, there is a need for a vehicle heat accumulator that is simple in structure and inexpensive.

  An object of the present invention is to provide a vehicular vacuum double container that has a simple structure and is inexpensive.

According to the first aspect of the present invention, the inner container is surrounded by the outer container, the mouth of the outer container is joined to the mouth of the inner container, and the sealed space between the inner container and the outer container is evacuated to form a vacuum double A water inlet for constituting the container and taking in the cooling water from the cooling water circuit of the vehicle engine to the inner container, and a water outlet for returning the cooling water stored in the inner container to the cooling water circuit of the vehicle engine, provided on the mouth,
A diaphragm portion that swells when the pressure of the cooling water taken into the inner container is high and returns when the pressure of the cooling water decreases is provided in the inner container, and the diaphragm portion includes a convex portion or a concave portion. A vacuum double container for a vehicle provided with a concave portion or a convex portion into which the concave portion is fitted in the outer container ,
A valve body is provided that is connected to the diaphragm portion and closes the mouth portion of the inner container when the pressure of the cooling water decreases .

The invention according to claim 2, the vehicle vacuum double container according to claim 1 Symbol mounting, characterized in that it is arranged at a position higher than the engine.

In the invention according to claim 1, the diaphragm is provided with a diaphragm portion that swells when the pressure of the cooling water to be taken into the inner container is high and returns when the pressure of the cooling water becomes low. The outer container was provided with a recess or projection that fits into the projection or recess.
During traveling, the pressure of the cooling water increases. Then, the diaphragm part bulges, the convex part fits into the concave part, and the inner container is mechanically connected to the outer container. As a result, there is no concern that the inner container will vibrate excessively even if it receives vibration during traveling.

When parked, the cooling water pressure drops. Then, the diaphragm part returns, the convex part is separated from the concave part, and the inner container is separated from the outer container. As a result, the heat storage property can be improved.
Only the convex part and the concave part are provided in the inner container and the outer container, and the actuator and the control part are unnecessary. Therefore, according to the first aspect, it is possible to provide a vehicular vacuum double container that has a simple structure and is inexpensive.

In addition, the invention according to claim 1 includes a valve body that closes the mouth portion of the inner container when the pressure of the cooling water decreases. For example, when the engine is stopped for a while, the temperature of the engine gradually decreases, so the temperature of the cooling water in the inner container decreases. In such a case, if the valve body is closed, high-temperature cooling water can be stored in the inner container.

In the invention which concerns on Claim 2 , the vacuum double container for vehicles is arrange | positioned in the position higher than an engine, It is characterized by the above-mentioned. Due to the thermal properties, high temperature cooling water accumulates in high places and low temperature cooling water accumulates in low places. For example, immediately after the engine is stopped, the pressure of the cooling water is still high and the temperature of the cooling water is still high. If the vehicular vacuum double container is provided higher than the engine, high-temperature cooling water can be collected in the vehicular vacuum double container. Therefore, the heat storage property of the vehicle vacuum double container can be further enhanced.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.
FIG. 1 is a view showing an arrangement example of a vacuum double container according to the present invention, an engine 11, a radiator 12 that cools cooling water, a heater core 13 that warms a vehicle interior using high-temperature cooling water as a heat source, and cooling water. In a cooling water circuit 10 for a vehicle engine having a water pump 14 forcibly circulating the water and a thermostat 15 for determining whether or not the cooling water is directed to the radiator 12 according to the water temperature, for example, an engine 11 and a heater core 13 Between the two, a vacuum double container 20 for storing high-temperature cooling water is disposed.

Hereinafter, the details of the vacuum double container 20 will be described.
FIG. 2 is a cross-sectional view of a vacuum double container according to the present invention. The vacuum double container 20 surrounds the inner container 21 with the outer container 22, and the mouth part 24 of the outer container 22 is connected to the mouth part 23 of the inner container 21. The sealed space 25 between the inner container 21 and the outer container 22 is evacuated.
A water inlet 26 for taking cooling water into the inner container 21 and a water outlet 27 for returning the cooling water stored in the inner container 21 to the cooling water circuit are provided at the mouth 23 of the inner container 21.

  Further, a diaphragm portion 28 that swells when the pressure of the cooling water taken into the inner vessel 21 is high and returns when the pressure of the cooling water becomes low is provided integrally with the inner vessel 21, and a convex portion 29 at the center of the diaphragm portion 28. Are integrally formed. And the recessed part 31 corresponding to the convex part 29 provided in this inner container is integrally formed in the outer container 22.

  The cooling water that has entered from the water inlet 26 is sufficiently retained in the inner container 21, and then the guide member 32 that guides the water to reach the water outlet 27 is built in the inner container 21 so that it slides with the diaphragm portion 28. Has been. Details of the guide member 32 will be described in the next figure.

FIG. 3 is an exploded perspective view for explaining the guide member. The guide member 32 is provided with a flange 34 at the upper end of the pipe 33, and a plurality of water passage holes 35 are opened below the flange 34, with a bowl-like shape in the middle. And a disc 37 at the lower end and a semi-disc 38 above the disc 37.
Further, the water inlet 26 and the water outlet 27 are provided in a cylindrical member 43 having a bottom surface closed by a bottom 41, an upper portion opened, and a flange portion 42 at an upper portion. The cylindrical member 43 is detachably connected to the outer container 22 by the flange portion 42 and the bolt 44.

Returning to FIG. 2, the flange 34 at the upper end of the guide member 32 is engaged with the back surface (lower surface) of the convex portion 29 provided in the inner container so that the diaphragm portion 28 and the guide member 32 are interlocked. .
Moreover, the diaphragm part 28 of a figure exists in the original position of the place which does not bulge. In this state, the position of the valve body 36 is set so that the valve body 36 closes the mouth 23 of the inner container 21 with a slight gap.
Further, the disc 37 at the lower end of the guide member 32 substantially contacts the bottom 41 of the cylindrical member 43, and the semi-disc 38 substantially matches the lowest position of the water outlet 27.

  Diaphragm portion 28 is preferably made of a steel material such as spring steel, but can be applied to non-steel materials such as heat-resistant rubber as long as it is bent by pressure and has heat resistance.

The operation of the vehicular vacuum double container 20 having the above configuration will be described below.
FIG. 4 is an operational view of the vacuum double container for a vehicle according to the present invention, where the black arrow indicates “pressure” and the white arrow indicates “flow” of the cooling water.
The cooling water pressure increases during traveling. When the cooling water pressure increases, pressure is applied toward the inner container 21. Then, the diaphragm portion 28 expands due to the pressing force of the cooling water, the convex portion 29 provided in the inner container is fitted into the concave portion 31 provided in the outer container, and the inner container 21 is mechanically connected to the outer container 22. The

  At this time, as shown by the white arrow, the cooling water passes from the water inlet 26 through the inner vessel 21 to the water passage hole 35, reaches the water passage hole 35 from the water passage hole 35, and is connected to the water outlet 27 at high pressure. It passes between the disc 37 and the semi-disc 38, and flows from the water outlet 27 to the cooling water circuit.

When the cooling water pressure drops due to parking or the like, the diaphragm portion 28 returns to a concave shape and enters the state shown in FIG.
That is, in FIG. 2, when the pressure is lower than a predetermined pressure, the diaphragm portion 28 is restored, the convex portion 29 provided in the inner container is separated from the concave portion 31 provided in the outer container, and the inner container 21 is separated from the outer container 22. Further, the guide member 32 provided so as to slide together with the diaphragm portion 28 slides downward in conjunction with the return of the diaphragm portion 28, and a valve in which the inner container opening 23 is provided in the guide member 32. Closed by body 36.

  That is, the high-temperature cooling water up to that time is contained in the inner container 21 by the valve body 36. For example, when the engine is stopped for a while, the temperature of the engine gradually decreases, so the temperature of the cooling water in the inner container 21 decreases. In such a case, if the valve body 36 is closed, high-temperature cooling water can be stored in the inner container, and heat storage properties can be maintained.

Another embodiment of the vacuum double container for vehicles according to the present invention will be described below.
FIG. 5 is a view for explaining another embodiment of FIG. 2, and the valve body 36 is omitted from FIG. The other parts are the same as those in FIG. 2, so the reference numerals are used and the detailed description is omitted.
That is, when the cooling water pressure increases, such as during traveling, the diaphragm portion 28 bulges, the convex portion 29 provided in the inner container and the concave portion 31 provided in the outer container are fitted, and the inner container 21 is brought into contact with the outer container 22. Mechanically linked.
Further, when the pressure of the cooling water becomes lower than a predetermined pressure, the diaphragm portion 28 returns to the original state, the convex portion 29 provided in the inner container is separated from the concave portion 31 provided in the outer container, and the inner vessel 21 is separated from the outer container 22. .

  Therefore, when it is not necessary to take measures against vibration, the configuration shown in FIG. 5 can be used, and when it is necessary to take measures against vibration, the inner container 21 can be mechanically connected to the outer container 22.

FIG. 6 is a diagram for explaining still another embodiment of FIG. 2, and the same elements as those in FIG.
In another embodiment, the convex portion 46 is provided in the center of the ceiling portion of the outer container 22, and the concave portion 47 is provided in the diaphragm portion 28 of the inner container 21 so as to be fitted thereto.

  Thus, even when the unevenness is reversed from the case in FIG. 2, the pressure of the cooling water increases during traveling, and the diaphragm portion 28 swells due to the pressing force of the cooling water, and the recess provided in the inner container 47 and the convex part 46 provided in the outer container are fitted, and the inner container 21 is mechanically connected to the outer container 22.

  FIG. 7 is a cooling water circuit diagram of a preferred vehicle engine. Elements common to those in FIG. 1 are diverted, and detailed description is omitted, but the vehicle vacuum double container 20 is positioned higher than the engine 11. It is characterized by having been arranged in.

  Immediately after the engine 11 is stopped, the cooling water pressure is still high and the cooling water temperature is still high. When the vehicular vacuum double container 20 is provided at a higher position than the engine 11, high-temperature cooling water inside the engine 11 gathers in the vehicular vacuum double container 20 due to thermal properties. As a result, the heat storage property of the vehicle vacuum double container 20 can be further enhanced.

  The present invention is suitable for a vacuum double container for a vehicle in a cooling water circuit of a water-cooled engine.

It is a figure which shows the example of arrangement | positioning of the vacuum double container which concerns on this invention. It is sectional drawing of a vacuum double container. It is a disassembled perspective view of a vacuum double container. It is an effect | action figure of the vacuum double container for vehicles which concerns on this invention. It is a figure explaining another Example of FIG. It is a figure explaining the further another Example of FIG. It is a cooling water circuit diagram of a preferred vehicle engine. It is a figure explaining the basic composition of the conventional technology.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Cooling water circuit, 11 ... Engine, 21 ... Inner container, 22 ... Outer container, 23 ... Inner container mouth part, 24 ... Outer container mouth part, 25 ... Sealed space, 26 ... Water inlet, 27 ... Water outlet, 28 ... Diaphragm part, 29, 46 ... Convex part, 31, 47 ... Concave part, 32 ... Guide member, 36 ... Valve body, 43 ... Cylindrical member.

Claims (2)

The inner container is enclosed by an outer container, the mouth of the outer container is joined to the mouth of the inner container, and the sealed space between the inner container and the outer container is evacuated to form a vacuum double container. A water inlet for taking cooling water from the cooling water circuit of the vehicle engine and a water outlet for returning the cooling water stored in the inner vessel to the cooling water circuit of the vehicle engine are provided at the mouth of the inner vessel ,
A diaphragm portion that swells when the pressure of the cooling water taken into the inner container is high and returns when the pressure of the cooling water decreases is provided in the inner container, and the diaphragm portion includes a convex portion or a concave portion. A vacuum double container for a vehicle provided with a concave portion or a convex portion into which the concave portion is fitted in the outer container ,
A vehicular vacuum double container comprising a valve body connected to the diaphragm portion and closing a mouth portion of the inner container when the pressure of the cooling water decreases . Claim 1 Symbol placement of the vacuum double container for a vehicle, the cooling water circuit of the engine of the vehicle, characterized in that it is arranged at a position higher than the engine.

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