CS252142B1 - Devices for heat-fueled vehicles - Google Patents

Abstract

The solution relates to the field of thermal fluid heating of vehicles and solves the problem of independent temperature control in the driver's compartment and in the passenger compartment. The proposed solution consists in that a first control valve is arranged in front of the heating units for the driver's compartment and a second control valve is arranged in front of the heating units for the passenger compartment. The solution is suitable for use in public transport vehicles for passengers over shorter distances, in which passengers do not stay for a long time and do not put away their outer clothing, and these vehicles have a completely separate driver's compartment from the passenger compartment. This may be buses, trams and trolleybuses, in which liquids are used as a heat transfer medium for heating.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for the heating of a vehicle which, in a circuit heating system not connected to a source of hot liquid, has parallel-connected heating units for the driver compartment for the passenger compartment.

For short-distance public transport vehicles, passengers stay in the vehicle for a relatively short time and do not take off their outer clothing. The optimum temperature in the passenger compartment is therefore relatively lower (eg Regulation No. 41 prescribes a temperature of 15 ° C for these vehicles). Conversely, for a driver who spends a shift in a vehicle and cannot be dressed in warm clothing for safe driving, this temperature is too low.

It is known to use several heating units in said vehicle, a high power heating unit in the front of the vehicle serving both to heat the driver's compartment and 1 to heat the front of the passenger compartment. In these arrangements, the temperature in the driver's compartment e in the passenger compartment cannot be regulated independently of one another.

It is an object of the invention to achieve independent control of the temperature in the driver compartment and the passenger compartment, and to ensure thermal comfort in the driver's compartment and the passenger compartment while preferring the driver compartment when it comes to shortening the time to the desired temperature.

This is achieved by adjusting to the thermal-heating of vehicles which, in the heating circuit not connected to the hot liquid source, have parallel heating units for the driver and passenger compartments according to the invention by providing a first regulating valve in front of the heating units for the driver compartment. An expensive control valve is provided by the passenger compartment heating units. The control portion of the first control valve is connected to a first temperature sensor arranged in the driver's compartment and the control portion of the second control valve is connected to a second temperature sensor arranged in the passenger compartment. A shut-off valve is provided in front of the passenger compartment heating units. The control portion of the first control valve is connected to the control portion of the second control valve.

In addition to the advantages arising from the objective of the invention 1, the device for heat-heating of vehicles according to the invention offers the possibility of completely shutting down the heating units for the passenger compartment (for example when traveling from a passenger).

An example of the arrangement of a vehicle heat-heating apparatus according to the invention is shown in the diagram in the attached drawing.

The heating circuit is not connected to the hot liquid source 1 and comprises parallel connected heating units 2 for driver compartment A and heating units 3 for passenger compartment g. The heating units 6, 3 consist of heat exchangers and an electrically driven fan. In front of the heating units 2 for the driver compartment A there is provided a first control valve 2, the actuating part of which is connected to a first temperature sensor fi arranged in the driver compartment A. In front of the heating units 3 for the passenger compartment g there is provided an expensive control valve 1, the control part of which is connected and an expensive temperature sensor 2 arranged in the space g esst. In addition, a shut-off valve g is provided in front of the heating units 3 for the passenger compartment g. The control part of the first control valve 2 d ® is connected and actuated by a part of the expensive control valve fi.

If the temperature in the driver's catheter A is lower than the desired temperature, the first temperature sensor fi in the driver's space A opens the first control valve 2 and the hot liquid from the source 1 flows through the heating units 2 for the driver's space A. If, at the same time, the temperature in the passenger compartment g is lower than the desired temperature, the second temperature sensor Z in the passenger compartment g opens the second control valve fi and the hot liquid s flows 1 through the heating units 3 for passenger compartment g. After reaching the required temperature in the driver's compartment A, the first temperature sensor fi closes the first control valve 2 *

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Similarly, after reaching the desired temperature in the passenger compartment g, the expensive temperature sensor 1 closes the expensive control valve 5. By closing the shut-off valve 8, for example manually, it is possible to shut down the heating units 2 for the passenger compartment B, for example when traveling without passengers.

For active safety reasons, it is more important to quickly reach the optimum temperature in driver's compartment A after a cold start. Therefore, the control portion of the first control valve 4 and the control portion of the second control valve 1 are interconnected. Due to the much higher heat consumption for passenger compartment B heating, this measure greatly accelerates the heating of the heating fluid and thus the driver's compartment A.

In a simpler variant, the automatic control can be replaced by manual control, ie the first and expensive control valve i β 5 are manually adjustable.

The heat-heating device for vehicles according to the invention is particularly suitable for short-distance public transport vehicles where passengers do not stay in the vehicle for a long period of time and do not take off their outer clothing, and this vehicle has a completely separate driver compartment from the passenger compartment.

The device according to the invention is applicable both to buses where the heating liquid is the coolant of an internal combustion engine, and to an electrically powered vehicle (trams, trolleybuses) where electrically heated liquids are used for heating.

Claims (5)

1. A device for hot-water heating of vehicles having, in a heating circuit not connected to a source of hot liquid, a driver heating unit e for passenger compartments in parallel, characterized in that a first regulating device is provided in front of the heating units (2). a valve (4) and a second control valve (5) is provided in front of the heating units (3) in the space (B). Device for hot-water heating of vehicles according to claim 1, characterized in that the control part of the first control valve (4) is connected to a first temperature sensor (6) arranged in the driver's compartment (A). Device for hot-water heating of vehicles according to claim 1, characterized in that the control part of the expensive control valve (5) is connected to a second temperature sensor (7) arranged in the passenger compartment (B). Device for hot-water heating of vehicles according to claim 1, characterized in that a shut-off valve (8) is arranged in front of the heating units (3) for the passenger compartment (B). Device for hot-water heating of vehicles according to claim 1, characterized in that the control part of the expensive control valve (5) is connected to the control part of the first control valve (4).