JPS6220330Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a hot air heating device for a vehicle, and particularly to a hot air heating device for a railway vehicle such as a diesel rail car.

(Prior Art) A diesel car equipped with an internal combustion engine is equipped with a radiator for cooling the engine, but the heat dissipation capacity of the radiator differs considerably between summer and winter.
In other words, in the summer, when the outside temperature is over 30°, the heat dissipation capacity decreases, but in the winter, when the outside temperature drops below freezing, the heat dissipation capacity increases considerably. Therefore, a radiator designed to cool the engine at outside air temperatures in summer has excess cooling capacity in winter.

Therefore, heating is performed using the surplus cooling capacity in winter. In conventional devices for this purpose, for example, as described in Japanese Utility Model Publication No. 56-49803, a heat exchanger for heating is provided separately from a heat exchanger for a cooling water radiator, and the temperature is raised by the engine. The cooling water is first sent to a heating heat exchanger to give heat to the heating air, and then sent to a radiator connected downstream in series therewith to be cooled by heat radiation.

(Problems to be Solved by the Invention) In such a configuration, a dedicated heat exchanger is required for heating, and piping tends to become complicated due to switching of cooling water flow paths, etc.

(Summary of the invention) The present invention was devised in view of the above-mentioned problems, and uses all the engine cooling radiators installed in the vehicle during the summer to properly cool the engine. In winter, part of the radiator is used to cool the engine, and the remaining part of the radiator is used to heat the vehicle.

(Embodiments) Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 and 2 show a first embodiment of the invention, E1, E2, E3 and E4 respectively designating heat exchanger sections of a radiator for cooling cooling water of an internal combustion engine, for example of a diesel rail car. These heat exchanger sections E1, E2, E3, and E4 are arranged on three sides of the radiator casing 2, and during normal radiator use, outside air is passed through these heat exchanger sections from the outside to the inside. It enters the casing 2 and is discharged from the open side of the casing 2 into the outside air via the duct 4 by the blower 3. As a result, the cooled water passing through each radiator section is cooled and returned to the engine.

According to the invention, a particular heat exchanger section E4 of the heat exchanger sections is used not only for cooling the water to be cooled, but also for heating the heating air. Heat exchanger section E4
A return air duct 5 for heating from the passenger compartment of the diesel railcar is connected to the upper part of the heat exchange air inlet side.
The heat exchange air inlet side of the heat exchanger section E4 can communicate with the outside air over the entire lower side of the duct 5. The duct 5 opens downwards at the connection 6 (FIG. 1) to the heat exchanger section E4, so that a chamber 7 is provided downwardly over the entire heat exchange area of the heat exchanger section E4. , On the outside of the room 7 there are double doors 8, 8.
are pivotally connected by pivots 9,9. In the state shown in FIGS. 1 and 2, the doors 8, 8 are open so as to communicate the chamber 7 with the outside air. When the doors 8, 8 are closed, they assume the position shown in FIG. 3, and the chamber 7 is isolated from the outside air.

The opening/closing mechanism for the doors 8, 8 is, for example, as shown in FIG.
1, a lever 12 having one end pivotally attached to its tip and connected to one pivot shaft 9 at the intermediate portion, and a link 13 having one end pivotally attached to the other end of the lever 12.
and an arm 14 having one end pivotally attached to the other end of this link 13 and the other end connected to the other pivot shaft 9.

heat exchange air outlet side of heat exchanger section E4;
That is, there is a partition 16 on the inside side of the casing 2.
A heating air supply duct 18 is connected to the casing 2 opposite to the partition 16, and a space 17 is formed therebetween. This space 17 can be communicated with or isolated from other spaces within the casing 2 by opening and closing double doors 20, 20 which are pivoted by pivots 19, 19. door 20,2
0 can be opened and closed in the same way as the doors 8, 8 by a mechanism as shown in FIG. In the state shown in FIG. 1, the doors 20, 20 are open, and one door 20 closes the inlet of the heating air supply duct 18. On the other hand, as shown in Figure 3, door 2
When 0 and 20 are closed, the entrance of the duct 18 is opened.

A blower 22 driven by a motor M is provided in the heated air supply duct 18, and heated air is sent into the vehicle interior through the duct 18.

Next, the operation of the embodiment described above will be explained.
In the state shown in Fig. 1, doors 8, 8, 20, 20
is open, which is the operating state during the summer. In this state, when the blower 3 is operated, the outside air flows through the heat exchanger sections E1, E2, and E.
3, E4 flows from the outside to the inside, passes through the duct 4, and is discharged into the outside air again. At this time, the engine cooling water flowing through each heat exchanger section is cooled. In this state, the inlet of the heating air supply duct 18 is closed by the door 20, and the blower 22 is not operated. As described above, in the summer, the radiator functions normally and all heat exchanger sections cool the engine cooling water.

By the way, in the summer, the heat dissipation capacity of the radiator is at its lowest, so all the heat exchanger sections must be used as described above, but in the winter, when the outside air temperature is low, there is surplus capacity in the heat dissipation capacity of the radiator. Therefore, in the present invention, this surplus power is used to perform a switching operation in which a part of the heat exchanger section of the radiator is used to heat the vehicle interior.

The operating conditions in winter are as shown in Figure 3, and the operation of the blower 3 causes the heat exchanger sections E1 and E to
2, E3 is used for cooling the cooling water. The solid arrows indicate the air flow through the heat exchanger section functioning as a radiator. On the other hand, due to the doors 8, 8, 20, 20 being closed,
The chamber 7 and the space 17 are isolated from the outside air and the interior space of the casing 2, respectively. When the blower 22 is operated, the air inside the vehicle is sucked through the return air duct 5 connected to the vehicle interior, passes through the interior of the vehicle compartment 7, flows through the heat exchanger section E4, and is heated.
Then, the warmed air is supplied into the vehicle interior through the space 17 and the duct 18 to perform heating.

In this way, by simply switching the air flow path, heating can be provided using a partial heat exchanger section of the radiator, while at the same time cooling of the engine cooling water also takes place as usual.

In the second embodiment shown in FIG. 5, heat exchanger sections E1, E2, E3, and E4 are similarly provided, of which a specific section E4 is used for winter heating. In this embodiment, during heating, heating air flows through the heat exchanger section E4 from the inside to the outside. That is, the partition plates 30, 31, 3 are provided in the inner space of the radiator casing 2.
A space 33 partitioned by 2 is provided, to which a heating return air duct 5 is connected. The space 33 can be communicated with and isolated from other spaces in the casing 2 by a door 34 pivotally connected by a pivot 35, and the door 34 is closed in the heating state shown in FIG. 5.

On the other hand, the heating air supply duct 18 is connected to the outside of the heat exchanger section E4 via a chamber 36, and the chamber 36 is connected to the lower side of the duct 18 in the same way as the chamber 7 shown in FIG. The doors 38, 38 allow communication with and isolation from the outside air. door 38
is pivoted by a pivot 39. In FIG. 5, the doors 38, 38 are shown in an open state, but
Closed when heating. Therefore, when the door 34 is also closed as shown and the heating blower (not shown) is operated, the air inside the vehicle passes through the duct 5, the space 33, and the heat exchanger section E4 as shown by the dotted arrow. It flows outward and is heated, duct 1
8 and is sent to the passenger compartment.

In the summer, the door 34 is opened to communicate the space 33 with the space inside the casing 2, and the door 34 is opened to communicate the space 33 with the space inside the casing 2.
8 and 38 are also opened as shown. When the blower 3 is operated in this state, the heat exchanger sections E1 and E
2, E3 as shown by the solid arrow, and heat exchanger section E4 where outside air is sucked in through the chamber 36 and flows inward, mixed with air from other heat exchanger sections through the space 33 and discharged. be done.

In the third embodiment shown in FIGS. 6 and 7, heat exchanger sections Ea, Eb, Ec, Ed, Ee, Ef are provided on opposite sides of the radiator casing 2a.
is provided, and the heat exchanger section Ea,
A dedicated blower 3a and duct 4a are provided on one side for Ec, Ee, and another dedicated blower 3a for the remaining heat exchanger sections Eb, Ed, Ef.
and a duct 4a are provided.

In addition, two heating ducts 41 and 4 are provided across the casing in the longitudinal center of the casing 2a.
2 are provided, and these ducts 41, 42 are connected to spaces 43, 44 within the casing 2a. The spaces 43 and 44 can be communicated with and isolated from other spaces within the casing 2a by doors 45 and 46. The doors 45 and 46 are pivoted by pivots 47 and 48, respectively, and are rotatable between the solid line position and the imaginary line position shown in the figure.

The duct 41 has a heating air outlet 53 that opens at the lower part of one side wall of the vehicle 52 via a blower 51.
is connected to. The duct 42 also has a blower 54.
is connected to a heating return air duct 56 that opens at the upper side wall of the vehicle 52.

There is a chamber 5 on the outside of the heat exchanger sections Ee and Ef.
8,59 are provided. These chambers 58 and 59 communicate with each other, and a plurality of doors 60 and 61 are provided on the outside thereof so that they can be freely opened and closed. It communicates with a heating air outlet 62 that opens to the heating air outlet 62 .

The operation of the device described above is as follows.

In the summer, the doors 45 and 46 are rotated to the open position shown by chain lines, and the doors 60 and 61 are opened to operate both blowers 3a. As a result, outside air flows through the heat exchanger sections Ea, Eb, Ec, and Ed from the outside to the inside as shown by the solid arrows, cooling the cooling water passing through these heat exchanger internal sections. In the heat exchanger sections Ee, Ef as well, outside air flows from the outside to the inside through the chambers 58, 59 through the open doors 60, 61, and is sent to the duct 4a through the spaces 43, 44, respectively.

On the other hand, in winter, the heat exchanger section
Only Ee and Ef are used as heaters for space heating.
For this purpose, the doors 45, 46 are rotated to the solid line position in FIG. 6, the doors 60, 61 are closed, and the blowers 51, 54 are operated together with the blower 3a. Thereby, the air inside the car is transferred from the return air duct 56 shown in FIG. 7 to the blower 54 and the duct 42.
The air is sent to the heat exchanger section Ef as shown by the dotted line arrow, flows through it, is heated, and enters the chamber 59, from which part of the air is sent out through the air outlet 62 into the passenger compartment as heating air. . The remaining air enters chamber 58 and then into the heat exchanger section.
Ee flows through the duct 41, the blower 5
1 and then sent out from the air outlet 53 into the vehicle interior as heating air.

(Effects of the invention) As described in the embodiments above, according to the invention, by diverting a part of the heat exchanger section of the radiator to heating air for heating in winter, a separate section dedicated to heating can be used. Since there is no need to provide a heat exchanger, the entire device can be downsized, the cooling water piping can be simplified, and the cooling function of the cooling water can be fully demonstrated in the summer.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of the first embodiment of the present invention;
3 is a cross-sectional view showing a state different from FIG. 1 of the first embodiment, FIG. 4 is a perspective view showing the door operating mechanism used in the first embodiment, and FIG. 5 is a perspective view of the same. The figure is a cross-sectional view of a second embodiment of the present invention, FIG. 6 is a cross-sectional view of a third embodiment of the present invention, and FIG. 7 is a cross-sectional view taken along the line -- in FIG. 6. 2, 2a, 2b...Radiator casing, E
1, E2, E3, E4, Ea, Eb, Ec, Ed,
Ee, Ef...heat exchanger section, 4, 4a, 4
b...Radiator air discharge duct, 5...Heating return air duct, 8, 20, 34, 38, 4
5, 46, 60, 61... Opening/closing door, 18... Heating air supply duct, 41, 42... Heating duct.

Claims (1)

[Claims for Utility Model Registration] 1. A radiator casing for cooling an engine, which constitutes a part of the surrounding wall with a plurality of heat exchanger sections; A blower for cooling water in the exchanger section is provided, and chambers 7, 36, 58, and 59 are formed facing the outside of a part of the heat exchanger section, and these chambers are provided with communication and isolation from outside air. On the other hand, a chamber 17, which is isolated from the radiator casing inner space, is provided with opening/closing doors 8, 38, 60, and 61 for opening and closing.
compartment opening/closing doors 20, 34, 45, 46 are provided so that partitions 33, 43, 44 can be selectively formed;
Selectively inserting a system line including the outer and inner chambers of the some of the heat exchanger sections and the heat exchanger section therebetween into a duct system consisting of a heating return air duct and a heating air supply duct that are connected to the passenger compartment. A hot air heating device for a vehicle that is capable of switching flow paths. 2. Warm air heating for a vehicle according to claim 1, wherein a return air duct for heating is connected to the outer chamber, and a heating air supply duct is connected to the inner chamber via an opening/closing door. Device. 3. Warm air heating for a vehicle according to claim 1, wherein a return air duct for heating is connected to the inner chamber via an opening/closing door, and a heating air supply duct is connected to the outer chamber. Device. 4. Said inner chamber is divided into two parts, one of which is connected to a heating return air duct and the other to a heating air supply duct, so that air flows from one of the inner chambers to the outer chamber and then to the inner chamber. The hot air heating device for a vehicle according to claim 1, wherein the hot air is made to flow to the other side. 5. The hot air heating system for a vehicle as set forth in claim 1, wherein the inner compartment opening/closing door also serves as a flow path switching door.