JP2016048033A - Cooling device of condenser - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an on-vehicle cooling device improved in cooling efficiency of a condenser by efficiently guiding travel wind blown upward by colliding with a front face of a vehicle in vehicle travel.SOLUTION: A cooling device of a condenser is disposed on a cab 1 of a vehicle, accommodates a condenser 33 connected to a working refrigerant circulation circuit 38, and includes a baffle plate 51 including an introduction port 51a opened in a vehicle front direction to introduce travel wind, and a discharge port 51b for discharging the travel wind introduced from the introduction port 51a. A front end edge of the introduction port 51a is formed in a state of at least partially projecting to a front part of the vehicle with respect to a virtual extension face SF extended upward on the same plane with an opening face on which a front window 1F of the cab 1 is mounted.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a condenser cooling device such as an air conditioner or a waste heat recovery device mounted on a vehicle.

  In vehicles equipped with an engine, the waste heat energy of the engine is regenerated as power by a waste heat recovery device (Rankine cycle circuit), or the condenser that constitutes the air conditioner that cools the interior of the cab by the driving force of the engine is efficient. It is required to be cooled. As an example, Patent Document 1 is known.

  According to Patent Document 1, it is proposed to dispose a condenser of a waste heat recovery device on a roof (cab) of a vehicle. According to this, since the condenser is vented without being disturbed by other devices, the condensation pressure can be further reduced, and the thermal efficiency of the waste heat recovery apparatus can be improved.

JP 2012-184597 A

  According to Patent Document 1, the front end portion of the cowl has a structure in which a clearance is provided between the front end edge of the roof of the truck and the running flow of the truck is taken in. However, the outer shape of the cowl is smoothly continuous with the front surface of the truck, and is formed so as to guide the air blowing upward along the front surface of the truck to the upper surface of the loading platform. Therefore, most of the traveling wind blown upward along the front surface flows through the upper surface of the cowl, and the traveling wind introduced into the rooftop room cannot be sufficiently secured. Therefore, the cooling efficiency of the condenser cannot be sufficiently obtained.

  In view of such technical problems, the present invention efficiently introduces the traveling wind that collides with the front surface of the vehicle and blows upward when traveling to the condenser to improve the cooling efficiency of the condenser. The purpose is to provide a cooling device.

SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following aspects or application examples.
The condenser cooling device according to this application example is disposed on a cab of a vehicle, accommodates the condenser connected to a working refrigerant circulation circuit, and introduces a traveling wind that opens in the vehicle front direction. And an air guide plate including a discharge port for discharging the traveling wind introduced from the introduction port, and at least a part of the front end edge of the introduction port has an opening surface on which the front window of the cab is mounted upward It is configured to protrude forward of the vehicle from the extended virtual extension surface.

  According to this invention, the condenser is mounted on the roof, and the front end edge of the introduction port is formed so as to protrude at least partly forward of the vehicle from the virtual extension surface in which the front window mounting opening surface extends upward. By efficiently introducing into the condenser the running wind that hits the front surface when the vehicle is running and blows upward, the condenser is cooled efficiently, and the condenser pressure can be further reduced. The thermal efficiency of can be improved.

  According to this invention, when the vehicle travels, a cooling device for a condenser that improves the cooling efficiency of the condenser by efficiently guiding the traveling wind that collides with the front surface of the vehicle and blows upward to the condenser is provided. Is possible.

The arrangement | positioning state figure of the cooling device which equipped the condenser in the cab roof concerning one Embodiment of this invention is shown. The connection explanatory drawing of the engine and Rankine cycle circuit concerning one Embodiment of this invention is shown.

  Hereinafter, embodiments according to the present invention will be described with reference to the drawings. However, the dimensions, materials, and relative arrangements of the components described in this embodiment are not intended to limit the scope of the present invention only to specific examples unless otherwise specified. Absent. In the present embodiment, when the direction is indicated, the left / right front / rear and the up / down direction are displayed based on the state of being seated in the driver's seat (not shown) of the right-hand drive vehicle.

  The cooling device for a vehicle-mounted condenser according to the present invention can be used for an air conditioner that performs air conditioning in a cab, a Rankine cycle, and the like. In this embodiment, the case of a Rankine cycle will be described. FIG. 2 is a connection explanatory diagram of the engine 2 and the Rankine cycle device 3 according to the embodiment of the present invention. The engine 2 mounted on the vehicle 100 includes an engine main body 2a, a radiator 21 that cools the cooling water R that has cooled the engine main body 2a, a cooling water passage 25 that circulates the cooling water R between the radiator 21 and the cooling water R. When the temperature of the cooling water R is low, the thermostat 24 bypasses the radiator 21 when the temperature of the cooling water R is low, the turbocharger 26 driven by the exhaust gas of the engine body 2a, and the turbocharger 26 disposed on the front side of the radiator 21 An intercooler 22 that cools the pressurized air supply and a radiator fan 25 that allows the outside air to pass through the intercooler 22 and the radiator 21 are configured.

  The Rankine cycle device 3 includes an evaporator 31 that exchanges heat between the cooling water R introduced from the cooling water passage 25 of the engine 2 and the working medium W of the Rankine cycle device 3, and the working medium W that has been heated to high temperature and high pressure by the evaporator 31. The expander 32 that is rotated by the expansion force and takes out the rotational force as power, and the generator 37 that is coaxially connected to the expander 32 and generates power with the power extracted by the expander 32 (in the case of this embodiment) These are the condenser 33 that cools and condenses the working medium W expanded by the expander 32, the working medium pump 34 that compresses the condensed working medium W and pumps it to the evaporator 31, and the working medium W. It is comprised with the circulation path 38 circulated to these apparatuses. A cooling fan 35 circulates outside air to the condenser 33 to promote condensation of the working medium W, and is operated as necessary.

  The evaporator 31 is introduced into the cooling water R via the cooling water circulation hoses 36 (36a, 36b) that connect the engine 2 side and the Rankine cycle device 3 side and circulate the cooling water R. The cooling water circulation hose 36 includes an upstream circulation hose 36 a that connects the upstream water path 25 a of the cooling water path 25 from which the cooling water R flows out of the engine body 2 a and the cooling water inlet of the evaporator 31, and cooling of the evaporator 31. The water outlet is connected to a downstream water passage 25b which is the cooling water inlet side of the engine body 2a of the cooling water passage 25, and a downstream circulation hose 36b which returns the cooling water R to the cooling water passage 25.

  FIG. 1 shows a state diagram in which a cooling device 5 according to an embodiment of the present invention is arranged in a cab roof 1R, and shows a side view of a front portion of a vehicle. In the present embodiment, a description will be given of a vehicle 100 that is a cab-over type truck and on which a frozen body body 1B is mounted.

  A chassis frame 10 serving as a base of the vehicle 100 is provided with a cab-over type cab 1 serving as a driver's cab at the vehicle front portion of the chassis frame 10. A box-shaped frozen body body 1B higher than the cab roof 1R is mounted on the rear side of the cab 1. An engine body 2 a is mounted in the engine room ER below the floor 14 of the cab 1. A radiator 21 is disposed on the front side of the engine body 2a, and an intercooler 22 is disposed in front of the radiator 21.

  A cooling device 5 is disposed in the cab roof 1R. The cooling device 5 includes a condenser 33 (including a cooling fan 35) of the Rankine cycle device 3 and includes an air guide plate 51 that guides traveling air to the condenser 33. The working medium W is circulated by the hose 38a from the expander 32 disposed in the engine room ER of the cab 1 to the condenser 33, and is cooled by the condenser 33. The cooled working medium W is cooled by the hose 38b. It flows to the working medium pump 34.

  The wind guide plate 51 has a substantially rectangular shape with the cab roof 1R, with the lower portion opening in the cab 1 in substantially the entire vehicle width direction when viewed from the front of the cab 1, and the upper surface portion 51d of the wind guide plate 51 is, for example, You may form in the shape inclined downward from the front-back direction intermediate part to back. The air guide plate 51 has an introduction port 51a for introducing the traveling air blowing up the front surface 1F of the cab 1 to the front end side of the cab 1 and the travel introduced into the rear end side of the cab 1. A discharge port 51b for discharging the wind from the inside of the air guide plate 51 to the outside is formed. In the case of this embodiment, the refrigerator room cover 1C of the freezer van 1B mounted behind the cab 1 projects forward from the upper part of the freezer van 1B. Therefore, the air guide plate 51 is formed in a shape in which the upper surface portion is inclined downward from the middle portion in the front-rear direction to the rear, but the shape is not particularly limited. Further, a gap m is secured between the discharge port 51b and the front end portion of the freezer van 1B. The traveling wind discharged from the discharge port 51b has a function of cooling the refrigerator room cover 1C.

  The condenser 33 is fixed to the mounting base 11 disposed on the cab roof 1 </ b> R in the air guide plate 51. The condenser 33 is disposed so that the traveling air intake surface of the condenser 33 is substantially perpendicular to the flow of traveling air introduced from the introduction port 5a.

  As shown in a side view of the vehicle 100 in FIG. 1, the introduction port 51 a has a part of the opening edge (shaded portion) with respect to a virtual extension surface SF that extends the front window surface 1 F of the cab 1 upward. It is formed so as to protrude forward. The virtual extension surface SF is a surface including a line extending upward by connecting a lower side and an upper side of a plane parallel to a vehicle front-rear direction plane including the vehicle width direction center position of the mounting opening of the front window 1F (SF ). By forming the introduction port 51a of the cooling device 5 so as to protrude forward from the virtual extension surface SF, a traveling wind that collides with the front surface of a larger number of vehicles and blows upward is introduced into the air guide plate 51. Can be introduced. Thereby, the cooling efficiency of the condenser in the baffle plate 51 is improved.

  Furthermore, in the cooling device 5, it extends from the front end edge of the inlet 3 to the vicinity of the front side of the condenser 33 at the middle portion in the vertical direction of the inlet 51 a and is disposed over the entire width of the air guide plate 51. An intermediate guide plate 51c may be provided. The guide plate 51c prevents the traveling wind blowing up the front window 1F of the cab 1 from being biased upward in the air guide plate 51, and ensures the amount of traveling wind flowing on the surface side of the cab roof 1R. In this way, the traveling wind is evenly distributed over the entire area of the condenser 33. By doing in this way, the cooling efficiency of the condenser 33 can be improved and the condensation pressure of a condenser can be lowered more.

  It can be used for a mounting structure of an air conditioner mounted on a vehicle or a condenser of a waste heat recovery device.

1 cab 1R cab roof 1F front window 2 engine 3 Rankine cycle device (waste heat recovery device)
DESCRIPTION OF SYMBOLS 5 Cooling device 31 Evaporator 32 Expander 33 Condenser 34 Working medium pump 36 Cooling water circulation hose 38 Circulation path 37 Generator 50 Space part 51 Air guide plate 51a Inlet 51b Outlet 100 Vehicle R Cooling water W Working medium SF Virtual extension surface

Claims (1)

A condenser disposed on the cab of the vehicle and connected to the working refrigerant circulation circuit is accommodated, and an introduction port for introducing a running wind that opens in the forward direction of the vehicle, and a running wind introduced from the introduction port are discharged. A wind guide plate including a discharge port,
At least a part of the front end edge of the introduction port is configured to protrude forward of the vehicle from a virtual extension surface extending upward from an opening surface to which a front window of the cab is attached. Cooling system.

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