KR20170041572A

KR20170041572A - An Apparatus for Air-Conditioning a Separated Volume of a Truck

Info

Publication number: KR20170041572A
Application number: KR1020150141195A
Authority: KR
Inventors: 박원일
Original assignee: (주)레코디아
Priority date: 2015-10-07
Filing date: 2015-10-07
Publication date: 2017-04-17
Also published as: KR101738669B1

Abstract

The present invention relates to a refrigeration, cooling or refrigerant cycle apparatus in a separation space of a freight vehicle, and more particularly, to a freight vehicle in which a loading space and an operation space are separated from each other, Space refrigerant cycle device. A cooling device in a separation space of the freight vehicle is installed outside the separation space of the freight vehicle and is independently operable with the vehicle engine; A transfer medium unit (21) including a heat transfer medium whose temperature is changed by the cold air generated from the cold air generation module (10); A heat exchange unit (22) for heat exchange between the heat transfer medium and the separation space; And a circulation pump (25) for transferring the heat transfer medium.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

The present invention relates to a refrigeration, cooling or refrigerant cycle apparatus in a separation space of a freight vehicle, and more particularly, to a freight vehicle in which a loading space and an operation space are separated from each other, Space refrigerant cycle device.

The cooling system for a vehicle has an operation structure similar to that of a general air conditioner except that the radiator has a heat radiating function while engine power is used for condensing and compressing the refrigerant. However, the installation structure may be changed depending on the use of the vehicle, and a freezing or cooling device may be separately installed as required. For example, an outdoor unit may be disposed on a ceiling or floor of a bus, and a separate unit for refrigerating or freezing a cargo space may be provided for a freight vehicle. The cooling system of the vehicle presupposes the operation of the engine. However, due to the refrigerant system operating on the premise of engine operation, excessive fuel may be unnecessarily consumed depending on the use of the vehicle.

A prior art related to the cooling system of a freight vehicle is disclosed in Patent Publication No. 10-2006-0061469. The prior art includes an exhaust duct connecting the exhaust manifold and the cooling fan fluid clutch so that engine exhaust can be sent to the cooling fan fluid clutch; A damper installed to open and close the exhaust gas in the exhaust duct; A motor for operating the damper; A pressure sensor for sensing the refrigerant pressure at the time of operating the cooling system and indicating the sensed pressure; A water temperature sensor for sensing a coolant temperature in the engine block and indicating the sensed temperature; And an electronic control unit for controlling the opening and closing of the damper based on a monitoring signal from the pressure sensor and the water temperature sensor.

Patent Publication No. 10-2010-0039500 discloses a refrigerating machine in which a refrigerant compressed at a high temperature and a high pressure in a compressor is heat-exchanged with ambient air in a condenser and is liquefied, and an outdoor unit installed in a roof or a rear panel of a truck cabin and an outdoor unit 1. A cooling system for a truck, comprising: an indoor unit installed at a predetermined position in a cabin, wherein the liquid refrigerant is changed to a low temperature by an expansion valve and then vaporized through venting and heat exchange in an evaporator to cool a cabin of a truck, In the outdoor unit, the compressor is driven by the 24V DC power supplied from the battery while the engine is stopped when the truck is stopped, the inside of the cabin is cooled through the indoor unit for a predetermined time, and the concentration of the toxic gas including carbon dioxide Trucks equipped with hazardous gas sensors to inform passengers And it discloses a cooling system.

This prior art or known technique discloses a cooling device operated by a battery of a truck's engine or truck. However, if the truck is left stationary for long periods of time for cargo loading, operation by the engine or battery may cause excessive fuel consumption and battery failure. When an outdoor unit and an indoor unit are installed for cooling the operation space, a connection hole is formed on a wall separating the cargo space and the operation space in order to connect the outdoor unit and the indoor unit. However, the formation of the connection hole on the wall surface is very disadvantageous from the standpoint of maintenance and maintenance of the vehicle.

Therefore, there is a need to develop a cooling system for the operating space and loading space of a freight vehicle that operates independently of the engine operation of the vehicle and at the same time does not cause damage to the vehicle. However, the prior art does not disclose such a technique.

The present invention has been made to solve the limitations and problems of the prior art and has the following purpose.

Prior Art 1: Patent Publication No. 10-2006-0061469 (published by HYUNDAI MOTOR CORPORATION, Jun. 08, 2006) Cooling system and control method for air conditioner condenser for truck Prior Art 2: Patent Publication No. 10-2010-0039500 (Kim Hyun-seok, Lee Yeon-hee, Kim Ju-il, published on April 16, 2010)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cooling device for a separation space of a freight vehicle which is operated independently of the engine operation so that the freight vehicle is not damaged.

According to a preferred embodiment of the present invention, the cooling device in the separation space of the freight vehicle is installed outside the separation space of the freight vehicle and is independently operable with the vehicle engine; A transfer medium unit including a heat transfer medium whose temperature is changed by cold air generated from a cold air generating module; A heat exchange unit for heat exchange between the heat transfer medium and the separation space; And a circulation pump for transferring the heat transfer medium.

According to another preferred embodiment of the present invention, the transfer medium unit includes a heat exchange tube for exchanging heat with the evaporator of the cold generating module, and the heat exchange tube is connected to the low temperature transfer tube disposed in the separation space.

According to another preferred embodiment of the present invention, the heat transfer medium is a mixture of water and ethylene glycol.

According to another preferred embodiment of the present invention, an engine operation detection unit for detecting the operating state of the freight vehicle and an operation level unit for determining the operation level according to the amount of fuel for operation of the battery or the cold air generation module are further included do.

The cooling device of the separation space according to the present invention is operated independently from the vehicle engine in the parking state of the lorry for a long time, so that the fuel consumption due to the operation of the cooling device is reduced. Further, the cooling device according to the present invention is installed without damaging the freight vehicle, which is advantageous for maintenance and management of the vehicle. Further, the cooling device according to the present invention controls the operation time according to the amount of the battery or the fuel, thereby preventing a safety accident and environmental pollution due to engine operation.

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 shows an embodiment of a cooling apparatus for a separation space of a freight vehicle according to the present invention. FIG.
Fig. 2 shows an embodiment of the structure in which heat is exchanged in the cooling device according to the present invention.
FIG. 3 shows an embodiment in which the cooling device according to the present invention is installed in a freight vehicle.
Fig. 4 shows an embodiment of the operating structure of the cooling device according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto. In the following description, elements having the same reference numerals in different drawings have similar functions, so that they will not be described repeatedly unless necessary for an understanding of the invention. The known elements will be briefly described or omitted. However, It should not be understood as being excluded from the examples.

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 shows an embodiment of a cooling apparatus for a separation space of a freight vehicle according to the present invention. FIG.

Referring to FIG. 1, a cooling device for a separation space of a freight vehicle is installed outside a separation space of a freight vehicle, and includes a cold generation module 10 that can operate independently of a vehicle engine. A transfer medium unit (21) including a heat transfer medium whose temperature is changed by the cold air generated from the cold air generation module (10); A heat exchange unit (22) for heat exchange between the heat transfer medium and the separation space; And a circulation pump (25) for transferring the heat transfer medium.

The cooling apparatus according to the present invention can be applied to a vehicle in which a loading space in which cargo is loaded and an operation space of a driver are separated. In this specification, the separation space mainly refers to the operation space, but includes an independently formed space formed inside the loading space or inside the operation space depending on the function of the vehicle.

The cold generating module 10 may have the same or similar structure as a known air conditioner that cools the air in the space determined by the circulation of the refrigerant. Specifically, the cool air generation module 10 includes: a condenser for converting refrigerant into high temperature and high pressure; A compressor (12) for compressing high temperature and high pressure refrigerant formed in the condenser; And an evaporator 13 for evaporating the refrigerant of the compressor 12 to cool the ambient air. The cool air generation module 10 may include an expansion valve installed at the front or rear of the evaporator 13 to easily evaporate the refrigerant. As described above, the cold air generating module 10 may have a function of generating the cooling air by the evaporator 13 and may be operated by the driving means 14. [

According to the present invention, the drive means 14 can be the same as the power by a battery or light oil. The driving means 14 may be a battery or a light oil storage tank provided independently, or a battery or a light oil storage tank installed in the freight vehicle. The driving means 14 can operate the cold generating module 10 separately from the engine operation of the freight vehicle. If the engine of the freight vehicle is operating, part of the engine power is used as the operating means of the cold generating module, and if the engine is stopped, the cold generating module 10 is driven by the driving means 14 It means that it works. The driving means 14 may be a small operation engine connected to a battery or a light oil storage tank and the cold generation module 10 may be operated by a battery or a small operation engine to generate cool air.

The cool air generation module 10 may be installed outside the separation space of the freight vehicle, for example, outside the driver's seat. However, a part of the cold generating module 10 may be installed, for example, in the cargo loading space. Also, the cold air generating module 10 may be a device for refrigeration or freezing of a loading space of a freight vehicle. As described above, the cool air generation module 10 may be installed independently from the outside of the separation space or installed for refrigeration or freezing of the loading space of the freight vehicle. Also, the cold generating module 10 may be an air conditioner for a separation space operated by an engine operation, but in such a case, the cold generating module 10 may be made so that the power transmitting means connected to the engine can be shut off. As described above, the cold-current generating module 10 according to the present invention can have a structure in which the engine of the freight vehicle can be operated in a stopped state. When the long-time freight vehicle needs to maintain the stopped state, Lt; / RTI > This reduces the fuel consumption of the freight vehicle, thereby reducing the emission of contaminants as a result of engine operation, and at the same time allowing the device installed in the vehicle to be used, thereby improving the efficiency of the device.

The cool air generated in the cool air generation module 10 may be transferred to the separation space by the cool air transmission module 20. The cold air transfer module (20) includes a transfer medium unit (21) for transferring the cold air around the evaporator (13) by heat exchange; A low temperature transfer tube (242) for transferring the heat exchanged heat transfer medium; A heat exchange unit (22) for cooling the ambient air from the low temperature heat transfer medium conveyed to the low temperature transfer tube (242); A high temperature transfer tube (241) for transferring high temperature heat transfer medium whose temperature has been raised by heat exchange with ambient air to the transfer medium unit (21); And a circulation pump 25 for regulating the circulation of the heat transfer medium between the transfer medium unit 21 and the heat exchange unit 22. In addition, the heat exchanging unit 22 may be provided with a supply fan 23 for transferring the cooled air to the separation space.

The cold air transfer module 20 may be installed in the separation space or at least a part thereof may be installed outside the separation space. For example, the transmission medium unit 21 may include a heat exchange tube for heat exchange with the cooling air around the evaporator 13, and a part of the transfer tube connected to the heat exchange tube and heat exchange tube It can be installed outside.

The transmission medium unit 21 may have a heat exchange structure together with a cold air supply unit 13a connected to the evaporator 13 and may be provided between the evaporator 13 and the cold air supply unit 13a, Cooling means can be arranged. And heat exchange means for heat exchange between the surrounding cooling air cooled by the cold air supply unit 13a and the transfer medium unit 21. [ The heat exchange means may comprise, for example, a low-heat liquid, metal, gas, or a combination thereof. For example, acetone, ethyl alcohol, methyl alcohol, olive oil, glycerin, toluene, ethylene glycol or a mixture thereof may be used as the heat exchange means, but is not limited thereto. When a liquid is used as the heat exchange means, it needs to have a low freezing point and a high boiling point, and it needs to have environmental friendliness. For example, the heat exchange medium or heat transfer medium may comprise 10 to 40 wt% of ethylene glycol and distilled water to make 100 wt% of the total, in order to satisfy such conditions. The heat exchange means may comprise, for example, an aluminum pin disposed around the cold supply unit 13a and a liquid or gas passing therethrough. Alternatively, the heat exchange means may be a heater pipe disposed around the cold supply unit 13a.

Although the evaporator 13 and the cold air supply unit 13a are shown as forming a separate apparatus in the illustrated embodiment, this is for convenience of description, and the evaporator 13 and the cold air supply unit 13a form one device . Specifically, the delivery medium unit 21 can be directly coupled to the evaporator 13 to form a heat exchange structure.

A fluid such as a mixture of water and ethylene glycol that has been cooled from a high temperature to a low temperature by the heat exchange means can be transferred to the heat exchange unit 22 through the low temperature transfer tube 242. The heat transfer medium can be transferred from the transfer medium unit 21 to the heat exchange unit 22 or from the heat exchange unit 22 to the transfer medium unit 21 by the operation of the circulation pump 25. [ The low temperature heat transfer medium in the heat exchange unit 22 cools the ambient air and the cooled ambient air can be introduced into the interior of the separation space by the supply fan 23 operated by a driving device such as a motor. The heat transfer medium whose temperature has been raised during the heat exchange process is transferred to the transfer medium unit 21 by the high temperature transfer tube 241 and can be brought to a low temperature by heat exchange with the evaporator 13. The heat exchange between the surrounding air and the heat transfer medium in the heat exchange unit 22 can be performed in a similar manner to the heat exchange between the ambient air of the evaporator 13 and the heat transfer medium.

When the evaporator 13 is installed outside the separation space, it is advantageous not to damage the car body of the freight vehicle while transferring the low temperature heat transfer medium to the inside of the separation space. For example, a low temperature heat transfer medium needs to be transferred to the inside of the separation space without forming a through hole in the separation wall provided in the driver's seat of the freight vehicle. The structure in which the heat transfer medium is transported between the inside and the outside of the separation space without the car body damage of the freight vehicle is described below.

2 shows an embodiment of a heat exchanging structure in an air conditioner according to the present invention.

Referring to FIG. 2, a refrigerant whose pressure has been reduced through the expansion valve 233 is evaporated through the evaporation pipe 231 to cool the ambient air. The heat exchange tube 232 corresponding to the embodiment of the cold supply unit may have a structure for cooling the internal heat transfer medium by the ambient air cooled by the evaporator 13. [ For example, the heat exchange tubes 232 may be constructed to surround the evaporation tubes 231, and the heat exchange tubes 232 may be made of copper, aluminum, brass or alloys thereof having low specific heat. The extended length of the heat exchange tube 232 can be a hollow shape in which the heat transfer medium can flow, and can be made of a stretchable material. And a sufficient length to allow heat exchange between the ambient air cooled by the evaporator 13 and the heat transfer medium. The evaporator 231 is connected to the low temperature refrigerant tube 242a and the high temperature refrigerant tube 241a and the heat exchange tube 232 is connected to the low temperature transfer tube 242 and the high temperature transfer tube 241 through the heat exchange tube 232, Lt; / RTI > The heat exchange tube 232 is made of a material having a small specific heat and a high thermal conductivity, whereas the low temperature transfer tube 242 and the high temperature transfer tube 241 can be made of a synthetic resin material having a high thermal conductivity. The low temperature transfer tube 242 and the high temperature transfer tube 241 may be made of an elastic material such as an insulating material such as a synthetic resin. And may be introduced into the separation space SV through the bottom surface BS of the separation space SV. Thereafter, the cold transfer tube 242 and the hot transfer tube 241 may be connected to the heat exchange unit 22. A cool air outlet 222 disposed below the heat exchange unit 22 for discharging the low temperature air CA and a high temperature air inlet 22 disposed above the heat exchange unit 22 for introducing the relatively high temperature air HA, (223) may be disposed. The heat exchanging unit 22 can form the hermetically sealed body 221 and the hermetically sealed body 221 is divided into the low temperature part connected with the low temperature transfer tube 242 and the high temperature part connected with the high temperature transfer tube 241 . And a supply fan 23 for circulating air between the cold air outlet 222 and the hot air inlet 223 may be installed. The low temperature air (CA) and the high temperature air (HA) can be circulated by the supply fan (23), and the heat transfer medium can be circulated by the circulation pump (25).

The evaporator 13 and the heat exchange unit 22 can be made in various arrangement structures and the present invention is not limited to the embodiments shown.

FIG. 3 illustrates an embodiment in which the air conditioner according to the present invention is installed in a freight vehicle.

3, a separation area can be formed between the loading vehicle 31 and the driving vehicle 32 of the freight vehicle 30, and the evaporator 13 can be provided on the outer wall surface of the separation area or the driving vehicle 32 And the cold transfer tube 242 and the hot transfer tube 241 may be connected to the load heat exchange unit 22a and the heat exchange unit 22 through the bottom surface of the freight vehicle 30, And the respective heat exchange units 22 and 22a can be disposed at various positions. Further, the heat exchange unit 22 may be disposed on the ceiling of the operation vehicle 32, while the cold transfer tube 242 may be disposed inside the operation vehicle and the hot transfer tube 241 may be disposed outside the operation vehicle.

Alternatively, the cold transfer tube 242 and the hot transfer tube 241 can be made in a double tube structure. Specifically, the low-temperature transfer tube 242 and the high-temperature transfer tube 241 are made of an inner tube and an outer tube, and a high-temperature heat transfer medium flows through the inner tube and a low-temperature heat transfer medium flows between the inner tube and the outer tube. have. Such a structure improves the fuel consumption efficiency of the cold-generating module including the evaporator 13, while enhancing the space efficiency of the inside of the driving vehicle 32 due to the tube arrangement.

The arrangement structure of the various evaporators 13, the tubes and the heat exchange units 22a, 22b can be applied to the present invention, and the present invention is not limited to the embodiments shown.

3, the cooling of the loading vehicle 31 can be performed by the evaporator 13 included in the air conditioner for cooling the loaded vehicle 31. In the embodiment shown in Fig. The evaporator 13 may be installed on the bottom surface of the driving vehicle 32 or on the outer wall of the loading vehicle 31. The evaporator 13 operates separately from the air conditioner installed in the freight vehicle 30 and can be operated regardless of the operation of the engine of the freight vehicle 30. [ The cool air generated from the evaporator 13 can be cooled by the heat exchange between the low temperature coolant tube 242a and the refrigerant flowing through the high temperature coolant tube 241a and the load heat exchange unit 22a. The cooling device according to the present invention can be connected to the air conditioner for cooling the loading vehicle 31 to cool the driving vehicle 32 as in the embodiment shown in Fig. The evaporator 13 can be operated separately from the engine operation of the freight vehicle 30 by the air conditioner for the loading vehicle 31 and the operation of the driving vehicle 32 by the heat exchanging unit 22 for the driving vehicle Can be cooled. The heat exchange unit 22 is installed inside the operation vehicle 32 and the high temperature transfer tube 241 and the low temperature transfer tube 242 are connected to the evaporator 13 through the inner wall and the bottom surface of the operation vehicle 32 Can be connected. Thus, the structure of the driving vehicle 32 can be prevented from being damaged while cooling the driving vehicle 32 independently of the operation of the vehicle engine.

As described above, the cooling apparatus according to the present invention has an advantage in that the loading vehicle 31 and the running vehicle 32 can be cooled independently or together while being operated separately from the operation of the engine. In particular, when the freight vehicle 30 is to be stopped for a long time in order to wait for loading, cooling of the loading vehicle 31 or the driving vehicle 32 is performed independently of the engine operation so that fuel consumption is reduced, So that the occurrence is reduced. Also, when the air conditioner is installed separately for the loaded vehicle 31, it is possible to prevent the structure of the running vehicle 32 from being damaged while cooling the running vehicle 32 by a heat exchange method.

The operating structure of the cooling device according to the present invention will be described below.

Fig. 4 shows an embodiment of the operating structure of the cooling device according to the present invention.

4, an air conditioner according to the present invention includes a control unit 41 including a central processing unit such as a microprocessor; A temperature detection unit 47 for detecting the temperature of the space and the space where the evaporator is located; An engine operation detection unit (42) for detecting an operation state of the engine; A thermal medium regulating unit 46 for regulating the circulation speed of the heat transfer medium; And an operation level unit 48 for detecting the fuel level of the battery 43 and the fuel storage tank 44 to determine the operation level.

The control unit 41 can detect the operating state of the engine when the switch is operated. Or the operation of the air conditioner may be stopped when the operation of the engine is started during the operation of the air conditioner in the stopped state of the engine. Alternatively, when the engine is operating, it is possible to set the engine drive to be the driving force of the air conditioner.

The fuel level of the battery 43 of the vehicle or the fuel storage tank 44 of the operation level unit 48 can be detected before or during the operation of the air conditioner. The fuel storage tank 44 is a tank for storing the fuel of the vehicle itself or a tank for separately operating the air conditioner. And the operation level unit 48 can determine the operation method and the operation time according to the level of the battery 43 and the fuel storage tank 44. [ The air conditioner according to the present invention can be operated by the battery 43 or by a raw material such as light oil. And the operating level unit 48 may be set to operate within 10% or 20% of the current battery level or diesel level. At the same time, it can be set to switch between the battery 43 and the fuel storage tank 44 depending on the level of the battery 43 and the fuel storage tank 44. The independent battery 43 or the fuel storage tank 44 may be set to operate at a level of 90% of the battery 43 or the fuel storage tank 44 when the battery 43 or the fuel storage tank 44 is installed, As shown in FIG.

When the operation of the air conditioner is started with the vehicle engine stopped, the control unit 41 can operate the cold generating module. Then, the control unit 41 can determine the operation level of the circulation pump 25 based on the temperature detected by the temperature detection unit 47, and can operate the supply fan 23 to cool the separation space. The temperature detected by the temperature detection unit 47 in the cooling process can be transmitted to the heating medium control unit 46. The heating medium control unit 46 can determine the operating level of the circulation pump 25 based on the transmitted temperature information. The heating medium control unit 46 may be installed independently or may be a part of the control unit 41. [

The air conditioner according to the present invention can be operated in various ways and the present invention is not limited to the embodiments shown.

The air conditioner of the separation space according to the present invention operates independently from the vehicle engine in a parking state of a lorry for a long time, thereby reducing fuel consumption due to operation of the air conditioner. Further, the air conditioner according to the present invention is installed without damage to the freight vehicle, which is advantageous for maintenance and management of the vehicle. Further, the air conditioner according to the present invention controls the operation time according to the amount of the battery or the fuel, thereby preventing a safety accident and preventing environmental pollution due to the operation of the engine.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention . The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

10: cold air generating module 12: compressor
13: Evaporator 13a: Cold air supply unit
14: driving means 20: cold air delivery module
21: transmission medium unit 22: heat exchange unit
22a: stacked heat exchange unit 23: supply fan
25: circulation pump 30: cargo vehicle
31: Loading vehicle 32: Driving vehicle
41: control unit 42: engine operation detection unit
43: Battery 44: Fuel storage tank
46: thermal medium control unit 47: temperature detection unit
48: Operation level unit 221: Closed body
222: cold air outlet 223: hot air inlet
231: Evaporation tube 232: Heat exchange tube
233: Expansion valve 241: High temperature transfer tube
241a: high temperature refrigerant tube 242: low temperature transfer tube
242a: low temperature refrigerant tube BS: bottom surface
CA: Low temperature air HA: High temperature air
SV: separation space

Claims

A cool air generation module (10) installed outside the separation space of the freight vehicle and operable independently of the vehicle engine;
A transfer medium unit (21) including a heat transfer medium whose temperature is changed by the cold air generated from the cold air generation module (10);
A heat exchange unit (22) for heat exchange between the heat transfer medium and the separation space; And
And a circulation pump (25) for transferring the heat transfer medium.

The heat exchanger tube (232) according to claim 1, wherein the transfer medium unit (21) includes a heat exchange tube (232) for heat exchange with an evaporator (13) of a cold generating module (10) Is connected to a cold transfer tube (242) disposed in the cold storage tank (242).

The cooling device of claim 1, wherein the heat transfer medium is a mixture of water and ethylene glycol.

The system according to claim 1, further comprising: an engine operation detection unit (42) for detecting an operating condition of the freight vehicle (30); and an engine operation detection unit Further comprising an operating level unit (48).