JP3036665U - Cargo bed heating system - Google Patents

Abstract

(57) [Abstract] [Problem] When transporting beer or the like, a transporting vehicle equipped with a refrigerating facility is not particularly used, and in cold regions, the beer or the like is loaded on the carrier bed of the transporting vehicle during extremely cold weather Then, the content liquid may freeze. SOLUTION: Under the floor of a cargo bed 1 of a transport vehicle, heating pipes 2a and 2b for arranging engine cooling liquid which has cooled each part of the engine and has a high temperature are arranged.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a cargo bed heating system of an automobile, and in a car using an internal combustion engine (engine), the cargo bed floor surface and the cargo room of a vehicle such as a truck that uses heat stored in a coolant for cooling the engine are used. The present invention relates to a bed heating device for heating.

[0002]

[Prior art]

 Generally, when transporting cans or bottles containing beer or soft drinks from a manufacturing site to a retail store, a transportation vehicle equipped with refrigeration equipment is not used.

[0003]

[Problems to be solved by the device]

 However, in cold regions, if beer or the like is loaded on the carrier bed of a transport vehicle during extremely cold weather, the liquid content may freeze. In the case of beer, once frozen, there was a problem that the taste would change even if the freeze was removed.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to prevent the entry of cold air, which is easy to enter from below the floor, by using an engine coolant of a transportation vehicle. It is an object of the present invention to provide a cargo bed heating system that prevents the frozen cargo such as beer loaded on the cargo bed from being frozen.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the cargo bed heating device of the present invention is characterized in that a heating pipe is provided under the floor of the cargo bed of the transporting vehicle, through which the engine coolant that has become hot due to cooling of various parts of the engine flows. .

In the above-described luggage carrier heating device, the heating pipe is arranged in a space between a heat insulating material laid on the bottom surface of the luggage carrier and a floor layer.

Further, in any of the above cases, the cargo bed heating device is provided with piping from the radiator that cools the engine so as to return to the radiator via the heating pipe, and from the radiator to the heating pipe. A first solenoid valve and a water pump are arranged in a pipe to an upstream end, a second solenoid valve is arranged in a pipe from the downstream end of the heating pipe to the radiator, and the first solenoid valve and the Piping is provided between the second solenoid valves, and when heating the cargo bed, the first solenoid valve switches the flow from the radiator to the upstream end of the heating pipe, and at the same time the second solenoid valve is connected. When switching from the downstream end of the heating pipe to circulation to the radiator and the cargo bed is not heated, only the space between the radiators is set by the first solenoid valve and the second solenoid valve. It is characterized in that it is configured to switch to the distribution of.

[0008] In this case, it is preferable that the engine is circulated only between the radiators when the engine is started, and a sub radiator may be used instead of the radiator.

Further, the cargo bed heating device in any of the above cases, based on the detection information from the radiator liquid temperature sensor and the heating pipe liquid temperature sensor, the first solenoid valve, the second solenoid valve and It further comprises control means for controlling the operation of the water pump, and the control means monitors the coolant temperature in the radiator by the radiator coolant temperature sensor after the engine is started, and the coolant temperature in the radiator is desired. When the coolant temperature of the radiator exceeds the desired temperature by controlling the switching of the first solenoid valve and the second solenoid valve so that the engine coolant circulates only between the radiators until the temperature reaches Shuts off the first solenoid valve and the second solenoid valve so that the engine cooling liquid returns from the radiator to the radiator via the heating pipe. It is characterized in that the water pump is operated simultaneously with the exchange control.

Further, the cargo bed is provided with an arbitrary number of vent holes, and an external air introduction shutter and a cooling fan are installed in the vent holes, and the control means is heated by the cargo bed floor surface and the cargo room. Temperature is monitored by the temperature sensor for the cargo floor and the temperature sensor in the cargo compartment.When the temperature of the cargo floor or the cargo compartment rises to a predetermined temperature, the outside air introduction shutter is opened or the outside air introduction shutter is opened. When the cooling fan is activated at the same time as the operation, and then the load floor or the interior of the luggage falls below the predetermined temperature, the outside air introduction shutter is closed, or the cooling fan is closed at the same time when the outside air introduction shutter is closed. May be stopped.

(Operation) In the invention as described above, switching control of the first solenoid valve and the second solenoid valve is performed so that the engine cooling liquid returns from the radiator to the radiator via the heating pipe and again to the radiator. By operating it, the cargo floor and the cargo compartment are heated. Further, by switching the first solenoid valve and the second solenoid valve so that the engine cooling liquid circulates only between the radiators after the engine is started, the engine cooling liquid can be quickly brought to a temperature suitable for heating. It is possible.

These operations are performed by the control means based on the detection information from the radiator liquid temperature sensor and the heating pipe liquid temperature sensor to control the operation of the first solenoid valve, the second solenoid valve, and the water pump. It can be achieved by controlling. That is, the control means monitors the temperature of the cooling liquid in the radiator by the radiator liquid temperature sensor after the engine is started. The first solenoid valve and the second solenoid valve are switch-controlled so that the engine coolant circulates only between the radiators until the coolant temperature in the radiator reaches a desired temperature. Then, when the coolant temperature of the radiator exceeds a desired temperature, the first solenoid valve and the second solenoid valve are simultaneously switched and controlled so that the engine coolant flows from the radiator through the heating pipe to the radiator again. Operate the water pump. As a result, the cargo floor and the cargo compartment are heated.

Further, the control means monitors the temperature environment of the cargo bed floor surface and the cargo room heated as described above by the cargo bed floor surface temperature sensor and the cargo room temperature sensor. When the cargo floor or the cargo room has reached a certain temperature, open the outside air introduction shutter provided in the ventilation hole of the cargo bed, or activate the cooling fan at the same time as opening this shutter to cool the outside air. Take it into the luggage compartment. After that, when the floor surface of the cargo bed or the inside of the cargo compartment falls below the predetermined temperature, the outside air introduction shutter is closed, or the cooling fan is stopped at the same time when the shutter is closed. From the above, it is possible to control the temperature environment suitable for the cargo on the floor of the platform or in the luggage compartment.

[0014]

[Embodiment of the invention]

 BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a partial cross-sectional view of a load carrier seen from the rear of the load carrier of a transport vehicle equipped with an embodiment of the load carrier heating device of the present invention.

The cargo bed heating apparatus of the present embodiment, in a transportation vehicle that employs a water-cooled engine cooling system, cools each part of the engine under the floor of the cargo bed 1 of the vehicle to a high temperature as shown in FIG. The heating pipe 2 through which the engine coolant flows is arranged to prevent cold air, which easily enters from under the floor, from entering, and to protect the transported goods such as beer that should not be frozen from freezing.

That is, several heating pipes 2a and 2b (for example, 5 to 10 pipes) extend in the front-rear direction of the luggage carrier 1 on the left and right of the vehicle under the floor of the luggage carrier 1. In the floor of the loading platform 1, a heat insulating material 3 is laid on the bottom surface of the loading platform 1, a floor layer 4 is provided on the floor, and a space is formed by the insulating material 7 and the floor layer 4, and heating pipes 2a, 2b are provided in this space. It has a structure in which The inner surface of the luggage carrier 1 is covered with a heat insulating material 5. In addition, the floor layer 4 is made sturdy so that heavy items can be loaded. For example, a sturdy material is used for the floor layer itself, or as shown in Fig. 1, a pillar is provided between the floor layer 4 and the bottom surface of the bed. Produce by providing 6. This is because the heating pipe 2 is arranged below the floor layer 4, and the floor layer covering the heating pipe is damaged by the load on a soft floor. In addition, when it is desired to raise the temperature in the cargo bed 1 to some extent, the floor layer 4 is formed of a material having high thermal conductivity (metal or the like).

FIG. 2 is a view schematically showing a heating liquid passage of one form of the cargo bed heating device of the present invention. As shown in this figure, a first electromagnetic valve 9 is connected via a pipe 8 to the downstream side of a radiator 7 for cooling the engine. A first pipe 8a and a second pipe 8b are connected to the first solenoid valve 9. The first pipe 8a has a water pump 10 for circulating the engine coolant, and is connected to the input header 11 at the upstream end. One end of the heating pipe 2a is connected to the input header 11, and the other end of the heating pipe 2a is connected to the intermediate header 12a. An intermediate header 12b is connected to the intermediate header 12a via a pipe 8. One end of the heating pipe 2b is connected to the intermediate header 12b, and the other end of the heating pipe 2b is connected to the outlet header 13 which is the downstream end. The outlet header 13 is connected to the radiator 7 by a pipe 8 having a second solenoid valve 14. The second solenoid valve 14 and the first solenoid valve 9 are connected by the second pipe 8b.

In such a structure, when heating the cargo bed 1, the first solenoid valve 9 is operated to switch the flow from the radiator 7 to the first pipe 8a, and at the same time the second solenoid valve 14 is operated. The flow is switched from the outlet head 13 to the radiator 7. Then, when the water pump 10 is operated, the engine coolant that has become hot inside the radiator 7 flows through the heating pipes 2a and 2b and returns to the radiator 7. By circulating the engine coolant including the heating pipes 2a and 2b, the cargo bed 1 can be heated. On the other hand, when the cargo bed 1 is not heated, the first solenoid valve 9 switches the flow from the radiator 7 to the second pipe 8b, and at the same time the second solenoid valve 14 switches the second pipe 8b to the radiator 7. .

It should be noted that when the engine is started, the cooling liquid has not yet warmed, so circulating the cooling liquid is useless. That is, if the cooling liquid is circulated immediately after the engine is started, it will not warm up easily. Therefore, in order to make the temperature moderately warm, it is desirable to initially operate the solenoid valve without operating the water pump, and circulate only between the radiators so that the coolant can be warmed as quickly as possible.

Further, as described later, the cargo bed heating device of the present embodiment may be configured so that outside air can be introduced into the cargo bed to control the temperature environment suitable for the carried object.

FIG. 3 is a block diagram including a controller for controlling the temperature of the bed in one embodiment of the bed heating apparatus of the present invention. As shown in this figure, the controller 15 as the control means is provided with a first liquid temperature sensor 18, a second liquid temperature sensor 19, a third liquid temperature sensor 20, a cargo bed floor temperature sensor 21 and a cargo room temperature sensor 22. Based on the detection information, the first solenoid valve 9, the second solenoid valve 14, the water pump 10, the operation of the outside air introduction shutter 16 and the cooling fan 17 are controlled to heat the vehicle, and the temperature of the cargo bed is controlled by the heating. To do.

The first liquid temperature sensor 18 detects the temperature of the cooling liquid in the radiator 7, and the second liquid temperature sensor 19 and the third liquid temperature sensor 20 detect the temperature of the cooling liquid in the underfloor heating pipes 2a and 2b. It is something to detect. A plurality of cargo room floor surface temperature sensors 21 and a plurality of cargo room temperature sensors 22 are arranged and used to detect the temperature distribution on the cargo bed floor surface and the temperature distribution inside the cargo room.

The outside air introduction shutter 16 is, for example, provided with an arbitrary number of ventilation holes (not shown) in the cargo bed 1 and installed in each ventilation hole. The outside air introduction shutter 16 includes a cargo floor temperature sensor 21 and a cargo room temperature sensor 22. It is opened and closed based on the detection information. A cooling fan 17 is also installed in each vent, and the outside air is forcibly introduced into the luggage carrier 1 according to the opening operation of the outside air introduction shutter 16. It is preferable that the outside air introduction shutter 16 and the cooling fan 17 are installed near the floor so that cool air can reach the transported object.

In such a form, the controller 15 monitors the temperature of the cooling liquid in the radiator 7 by the first liquid temperature sensor 18 after the engine is started. The first solenoid valve 9 and the second solenoid valve 14 are switch-controlled so that the engine coolant circulates only between the radiators 7 until the coolant temperature in the radiator 7 reaches a desired temperature. When the coolant temperature of the radiator 7 exceeds the desired temperature, the first solenoid valve 9 and the second solenoid valve are controlled so that the engine coolant returns from the radiator 7 to the radiator 7 via the heating pipes 2a and 2b. The water pump 10 is operated at the same time when the valve 14 is switched and controlled. As a result, the cargo floor and the cargo compartment are heated, but the controller 15 monitors the temperature environment by the cargo floor temperature sensor 21 and the cargo compartment temperature sensor 22. Then, when the temperature of the cargo floor or the cargo room rises to a predetermined temperature, the outside air introduction shutter 16 is opened, or the cooling fan 17 is operated at the same time when the shutter 16 is opened to take in cold outside air into the cargo room. . After that, when the floor surface of the loading platform or the loading chamber falls below the predetermined temperature, the outside air introducing shutter 16 is closed, or the cooling fan 17 is stopped simultaneously with the closing operation of the shutter 16. As described above, the cargo floor or the cargo room can be controlled to a temperature environment suitable for the goods to be transported. If the temperature environment of the loading platform is higher than the freezing point for beer, for example, it may be about 40 ° C. without any problem.

In the above-described embodiment, the heating pipes 2a and 2b, which are a collection of several pipes, are extended in the front-rear direction of the platform on the left and right with respect to the traveling direction of the vehicle. Is not limited to two groups, but the pipe shape does not have to be linear, and in essence, the arrangement and shape can evenly heat the floor surface of the cargo bed. .

Further, in the present embodiment, the engine cooling liquid for the radiator is used, but the present invention is not limited to this, and a sub radiator may be provided separately and the cooling liquid for the sub radiator may be used for heating the platform.

[0027]

[Effect of the invention]

 As described above, according to the present invention, by arranging the heating pipes under the floor of the bed of the transport vehicle, through which the engine coolant that has become high temperature by cooling each part of the engine flows, the cool air that can easily enter from under the floor can be provided. It can prevent entry and protect non-frozen items such as beer loaded on the bed of the vehicle from freezing.

Further, a ventilation port is provided in the cargo bed, and an outside air introduction shutter and a cooling fan are provided in the ventilation port, and the operations of the outside air introduction shutter and the cooling fan are detected by the temperature information for the cargo floor surface sensor and the temperature sensor in the cargo compartment. By providing the control means based on the above, it is possible to control the temperature of the cargo floor or the cargo room to a temperature environment suitable for the transported object.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view of a transportation vehicle equipped with an embodiment of the cargo bed heating apparatus of the present invention when the cargo bed is viewed from the rear of the cargo bed.

FIG. 2 is a view schematically showing a heating liquid passage of one embodiment of the cargo bed heating device of the present invention.

FIG. 3 is a block diagram including a controller for controlling a bed temperature in an embodiment of the bed heating apparatus of the present invention.

[Explanation of symbols]

 1 loading platform 2a heating pipe 2b heating pipe 3, 5 heat insulating material 6 support 7 radiator 8 piping 8a first piping 8b second piping 9 first solenoid valve 10 water pump 11 inlet header 12a, 12b intermediate header 13 outlet header 14th 2 solenoid valve 15 controller (control means) 16 outside air introduction shutter 17 cooling fan 18 first liquid temperature sensor (radiator) 19 second liquid temperature sensor (heating pipe) 20 third liquid temperature sensor (heating pipe) 21 loading platform Surface temperature sensor 22 Load compartment temperature sensor

Claims (7)

[Utility model registration claims] 1. A cargo bed heating apparatus comprising a heating pipe under the floor of a cargo bed of a transport vehicle, in which heating pipes for flowing engine cooling liquid which has cooled each part of the engine and has a high temperature are arranged. 2. The cargo bed heating device according to claim 1, wherein the heating pipe is arranged in a space between a heat insulating material laid on a bottom surface of the cargo bed and a floor layer. 3. A pipe is provided so as to return from the radiator for cooling the engine to the radiator via the heating pipe, and the first solenoid valve and the water pump are provided in a pipe from the radiator to an upstream end of the heating pipe. And a second solenoid valve is provided in a pipe from the downstream end of the heating pipe to the radiator, and a pipe is provided between the first solenoid valve and the second solenoid valve, and the cargo bed is provided. When heating, the first electromagnetic valve switches the flow from the radiator to the upstream end of the heating pipe, and at the same time, the second electromagnetic valve switches the downstream end of the heating pipe to the radiator. The load according to claim 1 or 2, wherein when the cargo bed is not heated, the first solenoid valve and the second solenoid valve are configured to switch the flow between the radiators only. Table heating system. 4. The cargo bed heating device according to claim 3, wherein when the engine is started, the cargo bed heating device is configured to flow only between the radiators. 5. The cargo bed heating device according to claim 3, wherein a sub radiator is used instead of the radiator. 6. The first unit based on detection information from a radiator liquid temperature sensor and a heating pipe liquid temperature sensor.
A solenoid valve, a second solenoid valve, and control means for controlling the operations of the water pump are further provided, and the control means monitors the coolant temperature in the radiator by the radiator fluid temperature sensor after the engine is started. The coolant temperature of the radiator is controlled by switching the first solenoid valve and the second solenoid valve so that the engine coolant circulates only between the radiators until the coolant temperature in the radiator reaches a desired temperature. When the temperature exceeds a desired temperature, the first coolant valve and the second solenoid valve are switched and controlled so that the engine coolant is returned from the radiator through the heating pipe to the radiator again. The cargo bed heating device according to claim 1, which is operated. 7. The cargo bed is provided with an arbitrary number of ventilation holes, and an outside air introduction shutter and a cooling fan are installed in the ventilation holes, and the control means is heated to the cargo floor and the cargo room. The temperature of the cargo bed floor surface temperature sensor and the temperature sensor inside the cargo room are monitored, and when the cargo bed floor surface or the cargo room rises to a predetermined temperature, the outside air introduction shutter is opened, or the outside air introduction shutter is opened. At the same time, the cooling fan is actuated, and then, when the cargo floor or the cargo room falls below the predetermined temperature, the outside air introduction shutter is closed, or the cooling fan is turned on at the same time as the outside air introduction shutter is closed. The cargo bed heating device according to claim 6, which is stopped.