JPS6229285Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE PRESENT EMBODIMENT The present invention relates to a unitary heating system for vehicles.

Conventionally, bus coolers have typically been removed from the vehicle body during the winter season for regular maintenance after the cooler usage season from spring to fall has ended.

However, in recent years, bus air conditioners that can be used for both cooling and heating have come into use.However, in buses that use air conditioners, if the air conditioner is removed for regular maintenance, the operation of the bus will be interrupted during that period. It would have to be stopped, which would hinder business activities. As a result, regular maintenance of air conditioners is neglected, resulting in the problem of shortening the lifespan of the air conditioner itself.

The present invention aims to address the above-mentioned problems and provides a heating unit that can be used as a replacement for air conditioners during maintenance.

First, an example of a commonly used bus air conditioner will be described with reference to FIGS. 1 and 2.

In FIG. 1, 1 is a frame, on which a sub-engine 2 dedicated to the cooling system, a compressor 3 driven by the sub-engine 2, a condenser 4, a heater core 6 and an evaporator 7 are installed. A case 5, a blower 8, an electric motor 8' for rotationally driving the blower 8, other cooling equipment such as a liquid receiver and an expansion valve (not shown), and a refrigerant distribution tube that connects these. etc. are installed, and the duct 9 downstream of the blower 8 is also installed, and these are integrated into an air conditioner unit A. The mounting bracket 11 provided on the frame 1 is connected to the joist of the bus body or a mounting bracket protruding from the joist using bolts or the like. By connecting them using metal fittings, the air conditioner unit A can be mounted under the floor of the vehicle body.

In the installed state, as shown in FIG. along with the second
As shown in FIG. 3C, the air outlet 10 of the duct 9 is crimped and connected to an air outlet connection duct 17 on the vehicle body side via a seal member 16.

As shown in FIG. 2A, this air outlet connection duct 17 is connected to a heating duct 18 provided in the longitudinal direction along the underfloor of the vehicle body and a cooling duct 19 provided in the ceiling of the vehicle body. Duct 18
and 19 are controlled to open and close by a switching damper 20.

Further, a hot water heater 15 is installed on the frame 1 of the air conditioner unit A (below the duct 9),
Cooling water (warm water) after cooling the main engine 21 for driving is further heated in the hot water heater 15 and flows to the heater core 6, and then the main engine 2
It is configured to return to 1.

In FIG. 1, reference numeral 22 denotes an air conditioner control operation section provided near the driver's seat, and various operation signals from this control operation section 22 are transmitted to the sub-engine 2 through a harness 23, a connector 24, and an air conditioner unit side harness 25. , electric motor 8', hot water heater 15, etc., so that these can be controlled.

In the above, during cooling, the sub-engine 2 is driven to circulate the refrigerant from the compressor 3 to the condenser 4, the liquid receiver (not shown), the expansion valve, the evaporator 7, and back to the compressor 3, and the electric motor 8' rotates the blower 8. The indoor air sucked into the case 5 from the air intake port 5' is cooled by the evaporator 7, and then sent from the duct 9 to the cooling duct 19 shown in FIG. At this time, the cooling water of the main engine 21 heated by the hot water heater 15 is made to flow through the heater core 6 as described above, and the blower 8 is rotated by the electric motor 8' to blow indoor air taken in from the air intake port 5'. The warm air is heated by the heater core 6, sent from the duct 9 to the heating duct 18 shown in the second figure, and blown into the vehicle interior from the warm air outlet of the heating duct 18.

FIG. 3 shows a first embodiment of the unit type heating system of the present invention, which is installed as a replacement for the air conditioner unit A as described above when it is removed for maintenance.

That is, in FIG. 3, numeral 31 is a frame having a unit mounting fitting 41;
1, a case 35 with a built-in heater core 36, a blower 38, an electric motor 38' for driving the blower 38, and a duct 39 are installed, and a hot water heater 45 is also installed, and these are combined into an integrated heating unit. As B, it can be installed under the floor of the car body.

In the above, the mounting metal fittings 41 of the frame 31
The width dimension a between the left and right mounting points and the dimension b between the front and rear mounting points are the width between the contact points on one side and the middle part of the frame 1 of the air conditioner unit A in FIG. The metal fitting 41 of the frame 31 of the heating unit B is attached to a part of the vehicle body side attachment part of the air conditioner unit A, which corresponds to the dimension a' and the dimension b' between the front and rear mounting points, respectively.
The air conditioner unit can be connected and mounted using connecting fittings such as bolts, and the height dimensions c and d of the air intake port 35' of the case 35 and the air outlet 40 of the duct 39 are similar to those of the air conditioner unit. Air intake port 5' of case 5 of A and air outlet 10 of duct 9
The air intake port 35' and the air outlet 40 are set to have the same opening area and position as the air intake port 5' and the air outlet 10 of the air conditioner unit A. Therefore, when the heating unit B is connected and mounted on the vehicle body side attachment part as described above, the air intake port 35' of the case 35 is connected to the lower end opening of the connection duct 13 on the vehicle body side, as in the case of the air conditioner unit A shown in the second figure. Seal member 42
The air outlet 40 of the duct 39 is connected to the air outlet connection duct 17 on the vehicle body through a sealing member 46. The hot water heater 45 is connected to the cooling water outlet of the main engine 21 for driving, as in the case of the air conditioner unit A in FIG. 2, and the hot water heater 45 heats the cooling water after cooling the main engine 21. The cooling water is connected to the cooling water inlet of the main engine 21 so as to be guided to the heater core 36 and thereby returned to the cooling water inlet of the main engine 21 .

Further, the control harness 55 for the electric motor 38' and the hot water heater 45 connects the connector 54 at the end thereof to the air conditioner unit control harness 23 shown in the first figure.
By inserting and connecting to the connector 24 at the tip, the heating unit B can be controlled by operating a part of the air conditioner control operation section 22 (ie, the heating control section).

Heating unit B of the present invention configured as described above
When the air conditioner unit A is removed for regular maintenance in the winter, the mounting bracket 41 of the frame 31 is connected to the mounting part on the vehicle body side for attaching the air conditioner unit with bolts, etc., and the hose for circulating cooling water of the main engine is connected. Connector 5
The heating unit B can be installed as an alternative by simply inserting and connecting the damper 4 into the connector 24 on the vehicle body side, and an accurate heating function can be achieved by simply placing the switching damper 20 shown in the second figure on the heating duct side. As a result, air conditioners can be adequately maintained over time without stopping bus service.

FIG. 4 shows a second embodiment of the present invention.
In this example, the mounting fittings 41 of the frame 31 are configured to rotate or slide with respect to the frame 31 to adjust the positional deviation with the vehicle body side attachment part for the air conditioner unit, and the case 35
Bellows-shaped flexible tubes 35'' and 38'' are provided at the air intake port 35' and the blower outlet of the blower 38, making it possible to install not only a single type of air conditioner unit but also multiple types of air conditioner units of different types and sizes. It can be used as an alternative heating unit. In FIG. 4, the same reference numerals as in FIG. 3 represent the same parts, and 56 indicates a hose for circulating cooling water for the main engine.

In FIG. 4, when the air conditioner unit to be replaced with this heating unit is removed, the duct 9 is separated from the air conditioner unit and left connected to the vehicle body side air outlet connection duct 17. A flexible tube 38'' is connected to the inlet portion.

In the examples shown in Figs. 3 and 4 above, the frame 31 is approximately 1/2 the size of the frame 1 of the air conditioner unit A, and the frame 31 is connected to the mounting part on either the left or right half of the air conditioner unit mounting part on the vehicle body. Frame 31
The frame 1 may have the same size as the frame 1 of the air conditioner unit A, an example of which is shown in FIG.

That is, in the third embodiment of the present invention shown in FIG. 5, the frame 31 is made to have the same size as the frame 1 of the air conditioner unit A, and can be connected and mounted to the air conditioner unit attachment part on the vehicle body side in the same manner as in the case of the air conditioner unit A. In addition, heating equipment such as a case 35 with a built-in heater core 36, a blower 38, an electric motor 38', and a hot water heater 45 are installed in one half of the frame 31 as in the case of FIGS. 3 and 4. A container 57 for storing luggage is mounted on the remaining half space of the frame 31, and these are made into an integrated unit.

In this example, the door 5 of the container 57 is viewed from the side of the vehicle body.
8 can be opened to easily take in and take out luggage, which is extremely convenient.

The embodiments shown in FIGS. 3 to 5 above show an example in which the hot water heater 45 is used to heat the cooling water of the main engine and guide it to the heater core 36. However, as shown in FIG. A combustion device 45' is installed inside the case 35, and the interior air sucked into the case 35 from the air intake port 35' by the rotation of the blower 38 is heated and becomes hot air while flowing around the outer periphery of the combustion device 45'. It is also possible to use a hot air heating system that blows air into the passenger compartment.In this way, there is no need for a hot water circulation system as in the embodiments shown in Figures 3, 4, and 5, and when working as an alternative to the air conditioner unit, the main engine Connection work for cooling water circulation hoses can be omitted. 45'a and 45'b are combustion devices 45'
These are the intake and exhaust ports for combustion. In FIG. 6, the configuration other than the above is the same as the embodiment shown in FIGS. 3 to 5, and the same reference numerals represent the same parts.

Although not shown in Figs. 5 and 6, the control harness on the heating unit side is connected to the connector 24 at the tip of the harness 23 on the control operation section 22 side of the air conditioner, as in Figs. 3 and 4, to connect the electric motor. It goes without saying that the control and the hot water heater or combustion device are also controlled.

As described above, according to the present invention, when servicing a bus air conditioner unit, by providing an alternative heating unit that can be installed extremely easily and reliably in the air conditioner unit installation part, the operating rate of the bus can be reduced to a small extent. You can take the time to properly maintain your air conditioner without causing any deterioration, and you can significantly extend the lifespan of your bus air conditioner.In addition, the above alternative heating unit is small, lightweight, and improves indoor air circulation. Since there is no evaporator in the route, it is possible to improve fuel efficiency and heating capacity during the replacement period, and the embodiments shown in Figures 4 and 5 can be used as a replacement for multiple types of air conditioner units. It is possible to replace many bus air conditioners one after another with a small number of heating units, and it is extremely economical, and has many excellent practical effects.

[Brief explanation of the drawing]

Figure 1 A, B is a plan view and front view showing an example of an air conditioner unit for a bus, and Figure 2 A, B, and C are an overall sectional explanatory view showing the air conditioner unit of Figure 1 installed in a bus, and an air conditioner. FIG. 2 is a cross-sectional view of a joint between an air intake port of the unit and a vehicle-side connection duct, and a cross-sectional view of a joint between an air-conditioner unit air outlet and a vehicle-side connection duct. 3 and 4 show the first and second embodiments of the present invention, respectively, and in each figure, A is a plan view and B is a front view. FIG. 5 is a plan view showing a third embodiment of the present invention, and FIG. 6 is a longitudinal sectional front view showing another embodiment of the present invention. A... Air conditioner unit, B... Heating unit, 1, 31... Frame, 5, 35... Case, 6, 36... Heater core, 8, 38... Blower, 8', 38'... Electric motor, 9,49...Duct, 11,41...Body fittings, 13...Connection duct, 15,45...Hot water heater, 45'...
Combustion device, 17...Blowout connection duct, 21...Main engine, 22...Air conditioner control operation unit, 24, 54...Connector.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A frame on the vehicle body side to which the indoor air intake of the air conditioner unit is connected on a frame that has mounting hardware that can fit part or all of the air conditioner unit mounting part of the vehicle body. A case that has an air intake port that is connected to the air intake port and has a built-in heater, a blower that has an air outlet that is connected to the air conditioner outlet connection duct on the vehicle body, and a rotary drive for the blower. What is claimed is: 1. A unit type heating system for a vehicle, comprising: an electric motor mounted thereon; and a harness for controlling the electric motor and the heater having a connector connected to a control operation section of an air conditioner. (2) The unit heating device for a vehicle according to claim 1, wherein the mounting metal fittings of the frame are configured to be rotatable or slidable with respect to the frame. (3) The unit type heating device for a vehicle according to claim 1 or 2 of the utility model registration claim, characterized in that the air intake of the case and the outlet of the blower are constructed of flexible tubes. . (4) The scope of the utility model registration claims 1 to 4 is characterized in that the frame has the same size as the frame of the air conditioner unit, and a container for storing luggage is attached to the extra space on one side of the frame. The vehicle unit heating device according to any one of Item 3.