KR200458146Y1 - Refrigerator for refrigerating car - Google Patents

Abstract

According to the present invention, a freezing means for providing cold air to the freezer by a freezing cycle that is operated when the vehicle engine is driven; A refrigeration vehicle cooling apparatus is provided that includes air conditioning means for providing cold air to a cab by an air conditioning cycle operated by a battery of a vehicle or an external operating power source.

Description

Refrigerator for refrigerating vehicle {Refrigerator for refrigerating car}

The present invention relates to a cooling device for a refrigeration vehicle, and more particularly, a refrigerating means for freezing a freezing compartment in a refrigerating vehicle is driven by an engine provided in the vehicle, and the air conditioning means for cooling the cab is a battery or an external device provided in the vehicle. It relates to a refrigeration vehicle cooling apparatus that can be driven by the DC power supply.

In general, a refrigeration vehicle is provided with a freezer for storing a frozen article, it is essentially provided with a cooling device including a refrigeration means for providing cold air to the freezer and air conditioning means for providing cold air to the cab.

Hereinafter, a conventional refrigeration vehicle cooling apparatus will be described with reference to the accompanying drawings.

1 is a configuration diagram schematically showing the configuration of a conventional refrigeration vehicle cooling apparatus.

First, as shown in Figure 1, the conventional refrigeration vehicle cooling apparatus, the compressor 11 is connected to the engine (E) provided in the engine room (ER) of the vehicle is driven, located in front of the outside of the freezer of the vehicle A refrigeration means (10) comprising a condenser (12) located in the condensing cabinet (C1), an expansion valve (13) and an evaporator (14) located in the evaporator cabinet (C2) located in front of the inside of the freezer of the vehicle; An expansion valve 23 and an evaporator located in the compressor 21 connected to the engine E, the condenser 22 located in the engine room ER of the vehicle, and the dashboard C3 located in front of the cab. And air conditioning means 20, including (24).

That is, the refrigeration means 10 and the air conditioning means 20, the low-temperature air is supplied to each of the freezer and the cab through the cooling cycle through the respective components.

However, in the conventional refrigeration vehicle cooling apparatus as described above, the compressors 11 and 21 of the refrigerating means 10 and the air conditioning means 20 are both operated by the driving of the vehicle engine E. At this time, since each of the compressors (11, 21) usually has the required power of 3 HP ~ 5 HP, the engine (E) of the vehicle is a power of 6 HP ~ 10 HP of the refrigeration means 10 and air conditioning means ( Since it is necessary to dedicate 20) to operate, there is a problem that does not output enough power when the vehicle is running, there is a problem that the fuel cost is very excessive.

In the conventional refrigeration vehicle cooling apparatus as described above, the refrigeration means (10) and the air conditioning means (20), because the compressor (11, 21) is operated by simply driving the vehicle engine (E), respectively, the engine ( In the state in which E) is stopped, the air-conditioning means 20 cannot be operated so that the cooling of the cab is impossible. Thus, the cooling efficiency is lowered. Since each compressor 11, 21 has to be connected, the connection work is very complicated and the engine room becomes large.

Therefore, an object of the present invention is to allow the freezing means for freezing the freezer compartment is driven by the engine provided in the vehicle and the air conditioning means for cooling the cab can be driven by the DC power of the battery provided in the vehicle or a battery additionally added. It is to provide a cooling device for a refrigeration vehicle.

In addition, another object of the present invention is to enable the operation of the air conditioning means even when the engine of the vehicle is stopped to selectively enable the cooling of the cab and the freezer to improve the cooling efficiency of the refrigeration cycle operated when the engine is driven. It is to provide a cooling device for a refrigeration vehicle.

On the other hand, the object of the present invention is not limited to the above-mentioned object, other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

According to the present invention, a freezing means for providing cold air to the freezer by a freezing cycle that is operated when the vehicle engine is driven; A refrigeration vehicle cooling apparatus is provided that includes air conditioning means for providing cold air to a cab by an air conditioning cycle operated by a battery of a vehicle or an external operating power source.

Here, the refrigeration means, a compressor provided in the engine room of the vehicle to compress the refrigerant when the engine is driven; A condenser located in a condensing cabinet installed at an outer front upper side of the freezer of the vehicle to condense the refrigerant compressed by the compressor; A condenser cooling fan positioned on one side of the condenser to forcibly cool the condenser; A heat exchanger disposed in an evaporator cabinet installed at an upper front side of the inside of the freezer of the vehicle to heat exchange the refrigerant condensed by the condenser or the refrigerant flowing into the compressor; An expansion valve positioned on one side of the heat exchanger to expand the refrigerant exchanged by the heat exchanger; An evaporator positioned at one side of the expansion valve to evaporate the refrigerant expanded by the expansion valve; And an evaporator blower fan positioned at one side of the evaporator to forcibly blow the cold air of the evaporator to the freezer.

The air conditioning unit may include: a DC compressor positioned in the condensing cabinet and operated by a separate battery provided in the battery or the condensing cabinet of the vehicle or an operating power source provided from the outside to compress the refrigerant; A condenser located at one side of the DC compressor to condense the refrigerant compressed by the DC compressor; A condenser cooling fan positioned on one side of the condenser to forcibly cool the condenser; An expansion valve positioned in an evaporator case positioned on a ceiling of a cab of a vehicle to expand the refrigerant condensed by the condenser; An evaporator positioned at one side of the expansion valve to evaporate the refrigerant expanded by the expansion valve; And an evaporator blower fan positioned at one side of the evaporator to forcibly blow the cold air of the evaporator to the freezer through a duct extending to the cab or the freezer.

Therefore, according to the present invention, the refrigeration means for freezing the freezer compartment is driven by the engine provided in the vehicle and the air conditioning means for cooling the cab is driven by the battery or external DC power source provided in the vehicle, fuel consumption of the engine It can be minimized, regardless of whether the engine is driven to provide cold air in the cab or freezer cooling space to improve the cooling efficiency, it is possible to minimize the size of the engine room.

On the other hand, the effects of the present invention is not limited to the effects mentioned above, other effects that are not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a schematic view showing the configuration of a conventional refrigeration vehicle cooling apparatus;
2 is a block diagram schematically showing the configuration of a refrigeration vehicle cooling apparatus according to a preferred embodiment of the present invention;
3 and 4 are respectively a plan view and a side view of a refrigeration vehicle to which the refrigeration vehicle cooling apparatus of FIG. 2 is applied; And
5 is a view showing an extract of the configuration of the cooling apparatus applied to the refrigerator vehicle of FIGS.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

Figure 2 is a block diagram schematically showing the configuration of a refrigeration vehicle cooling apparatus according to a preferred embodiment of the present invention, Figure 3 and Figure 4 shows the plane and side of the refrigeration vehicle to which the refrigeration vehicle cooling apparatus of Figure 2 is applied, respectively. 5 is a view showing an extract of the configuration of the cooling apparatus applied to the refrigerator vehicle of FIGS. 3 and 4.

As shown in Figures 2 to 5, the refrigeration vehicle cooling apparatus according to a preferred embodiment of the present invention, a refrigeration cycle for providing cold air to the freezer by a refrigeration cycle including a compressor operated when the vehicle engine (E) is driven. Means 100 and an air conditioning means 200 for providing cold air to the cab by an air conditioning cycle including a compressor of the vehicle (not shown) or an external operating power source of the vehicle.

Here, the refrigerating means 100 is for providing low temperature air to the freezer of the vehicle, the compressor 110 is provided in the engine room (ER) of the vehicle to compress the refrigerant when the engine (E) is driven, the vehicle The condenser 120 is located in the condensing cabinet (C1) is installed in the freezer outer front upper side of the condenser 120 to condense the refrigerant compressed by the compressor 110, the condenser 120 is located on one side of the condenser 120 Forced cooling condenser cooling fan 130, located in the evaporator cabinet (C2) installed in the upper front of the inside of the freezer of the vehicle to heat exchange the refrigerant condensed by the condenser 120 or the refrigerant flowing into the compressor (110) A heat exchanger 140, an expansion valve 150 positioned on one side of the heat exchanger 140 to expand a refrigerant heat exchanged by the heat exchanger 140, and an expansion valve positioned on one side of the expansion valve 150. Evaporation of refrigerant expanded by An erection 160 and the evaporator 160 is located on one side of the evaporator 160 includes an evaporator blowing fan 170 for forcibly blowing the cold air to the freezer.

The compressor 110 is driven by the driving force of the engine E to compress the refrigerant into a high temperature and high pressure gas, and is connected to a drive shaft of the engine E through a flywheel or a belt to drive the engine E. When the driving force is received and driven, the refrigerant discharged from the evaporator 160 described below is supplied through the refrigerant inlet pipe connected to the heat exchanger 140, compressed, and then supplied through the refrigerant outlet pipe connected to the condenser 120 described later. Let's do it.

Here, it is preferable that the refrigerant inlet pipe and the refrigerant outlet pipe are provided with check valves (not shown), respectively, to control the inflow and outflow of the refrigerant.

The condenser 120 condenses the compressed refrigerant supplied from the refrigerant outlet pipe of the compressor 110 into a medium temperature high pressure liquid using an air cooling method, and cools the refrigerant by an air cooling method by a condenser cooling fan 130. After condensation, it is supplied to the expansion valve 150 described later through the receiver tank RT. At this time, it is preferable that a drier DR is further installed at an end of the receiver tank RT to remove moisture contained in the refrigerant provided to the heat exchanger 140.

The heat exchanger 140 is located between the condenser 120 and the expansion valve 150 or between the evaporator 160 and the compressor 110 so that the refrigerant condensed to medium temperature by the condenser 120 has a low temperature. Alternatively, the refrigerant evaporated to a low temperature by the evaporator 160 has a medium temperature to improve expansion and compression efficiency of the expansion valve 150 and the compressor 110.

The expansion valve 150 expands the heat exchange refrigerant into a low temperature low pressure gas by the heat exchanger 140, and receives the refrigerant condensed from the receiver tank RT in which the condensed refrigerant of the condenser 120 is stored. .

The evaporator 160, after evaporating the refrigerant expanded by the expansion valve 150 through the evaporator blower fan 170 described later to supply to the heat exchanger 140 so that the low-temperature refrigerant has a constant temperature. .

The evaporator blower fan 170 allows the cold air of the evaporator 160 to be blown into the freezer through a grill communicating with the freezer.

On the other hand, the air conditioning means 200, for providing low-temperature air to the cab of the vehicle, is located in the condensing cabinet (C1) is provided in a separate battery (not shown) or condensing cabinet (C1) of the vehicle A DC compressor 210 operated by a battery or an operating power source provided from the outside to compress the refrigerant, and a condenser 220 positioned on one side of the DC compressor 210 to condense the refrigerant compressed by the DC compressor 210. The condenser cooling fan 230, which is located on one side of the condenser 220 and forcibly cools the condenser 220, is located in the evaporator case C3 located on the ceiling of the cab of the vehicle and condensed by the condenser 220. An expansion valve 240 for expanding a refrigerant, an evaporator 250 located at one side of the expansion valve 240 to evaporate the refrigerant expanded by the expansion valve 240, and an evaporator located at one side of the evaporator 250. 250 chills in the cab again Through a duct extending in the freezer includes an evaporator blowing fan 260 for blowing air to force the freezer.

The DC compressor 210 is driven by receiving an operating power of, for example, DC 24 V from an operating power supply means (not shown) provided in a battery (not shown) of a vehicle or a parking lot or a loading dock. By compressing with high pressure gas, the refrigerant discharged from the evaporator 250 described below is supplied through the refrigerant inlet tube, compressed, and then supplied through the refrigerant outlet tube connected to the condenser 220 described later.

In this case, the DC compressor 210 may be freely changed in load under the control of a microprocessor, and a protection device capable of dropping the DC voltage is inserted into the driving drive to enable simple compression and low voltage at which no current is consumed. It is preferable that it is a hermetic compressor type.

The condenser 220 condenses the compressed refrigerant supplied from the DC compressor 210 into a medium temperature high pressure liquid using an air cooling method, and condenses the refrigerant by cooling the refrigerant in an air cooling method by the condenser cooling fan 230. Supply to expansion valve 240 to be described later.

The expansion valve 240 expands the refrigerant condensed by the condenser 220 into low temperature low pressure gas, and the evaporator 250 stores the refrigerant expanded by the expansion valve 240 in the evaporator blower fan 260. After evaporating through, the refrigerant is supplied to the DC compressor 210.

The evaporator blower fan 260 allows the cold air of the evaporator 250 to be blown into the cab through a grill communicating with the cab, or optionally, when the freezer is divided into a freezer space and a refrigerated space by a partition wall. It is to be blown into the refrigerated space through the grill communicating with the space.

That is, in the cooling device for a refrigeration vehicle according to a preferred embodiment of the present invention, the refrigerating means 100, the compressor 110 is provided in the engine room (ER) of the vehicle, is provided in the upper front side outside the freezer of the vehicle The condensing cabinet (C1) is provided with a condenser 120 and a condenser cooling fan 130, etc., the heat exchanger 140 of the refrigerating device 100 in the evaporator cabinet (C2) installed in the upper front of the inside of the freezer of the vehicle, With the expansion valve 150, the evaporator 160 and the evaporator blower fan 170, the compressor 110 is driven by the engine E provided in the engine room ER to cool the air in the freezer. to provide.

In addition, in the refrigeration vehicle cooling apparatus, the air conditioning means 200, the condensing cabinet (C3) is provided with a DC compressor 210, a condenser 220 and a condenser cooling fan 230, located on the cab ceiling of the vehicle With the expansion valve 240, the evaporator 250, and the evaporator blower fan 260 provided in the evaporator case C3, the DC compressor 210 is a battery (not shown) or a condensing cabinet C3 of the vehicle. It is driven by the operating power of the DC 24V supplied from the operating power supply means provided in the parking lot or the loading dock via a battery or a separate power line provided separately to provide cold air to the refrigerating space of the cab or freezer.

On the other hand, the refrigeration vehicle cooling apparatus according to a preferred embodiment of the present invention, the control box for controlling the components of the refrigeration means 100 and the air conditioning means 200 and a control box provided with a control button is provided in the cab, etc., Through this, it is desirable to check the stable operation of the engine, compressor, condenser, expansion valve and evaporator.

Hereinafter, the operation and effects of the refrigeration vehicle cooling apparatus according to the preferred embodiment of the present invention will be described.

First, the operation of the refrigeration means 100 is driven by the driving of the engine E in the refrigeration vehicle cooling apparatus having the above configuration, the fuel from the fuel tank to the engine E in accordance with the operation of the refrigeration vehicle. When a control signal for the operation of the compressor 110, the condenser cooling fan 130, the evaporator blowing fan 170, and the like is input from the control box (not shown) in this state, the operation of the compressor 110 is performed. In a state in which the refrigerant compressed with the high temperature and high pressure gas is condensed into the medium temperature high pressure liquid by the condenser 120, heat exchanged into the low temperature high pressure liquid by the heat exchanger 140, and expanded into the low temperature low pressure liquid by the expansion valve 150. After the evaporator 160 is evaporated to low temperature low pressure gas, cold air is forcedly blown into the freezer by the evaporator blower fan 170, and thus the freezer has a low temperature.

On the other hand, in the cooling device for a refrigeration vehicle having the above configuration will be described the operation of the air conditioning means 200 irrespective of whether the engine (E) is driven, the battery (not shown) or a separate ( Auxiliary) The DC compressor 210 and the condenser cooling fan 230 from a control box (not shown) in a state in which a 24 V operating power is connected to the DC compressor 210 from a battery or an operating power supply means provided in a parking lot or a loading dock. And when the control signal for the operation of the evaporator blower fan 260, etc. is input, the refrigerant compressed by the high-temperature high-pressure gas by the operation of the DC compressor 210 expands in the state condensed into the medium-temperature high-pressure liquid by the condenser 220 Refrigerated space formed by expansion of the low temperature low pressure liquid by the valve 240 and evaporated by the low temperature low pressure gas by the evaporator 250 and then forced air blown into the cab by the evaporator blower fan 260 or by the partition wall of the freezer. On Groups are forced ventilation is the cab and the refrigeration space to have the state of a low temperature.

Therefore, according to the cooling device for a refrigeration vehicle as described above, the freezing means for freezing the freezer compartment is driven by the engine provided in the vehicle and the air conditioning means for cooling the cab is driven by a battery provided in the vehicle or an external DC power source. Thus, it is possible to minimize the fuel consumption of the engine, to improve the cooling efficiency by providing cold air in the cab or the refrigeration space of the freezer, regardless of whether the engine is running, and the simple connection that only the compressor of the refrigeration means is connected to the engine This makes it possible to minimize the size of the engine compartment.

Although the present invention has been described with respect to specific embodiments, various modifications can be made without departing from the scope of the present invention. Therefore, the scope of the invention should not be defined by the described embodiments, but by the equivalents of the claims and claims.

Claims (4)

Freezing means (100) for providing cold air to the freezer by a freezing cycle operated when the vehicle engine (E) is driven; Air conditioning means (200) for providing cold air to the cab by an air conditioning cycle operated by a battery (not shown) or an external operating power source of the vehicle,
The air conditioning means 200,
Located in the condensing cabinet (C1) installed in the upper front upper portion of the outside of the freezer of the vehicle is operated by a separate battery provided in the battery (not shown) or the condensing cabinet (C1) of the vehicle or the operating power provided from the outside to cool the refrigerant A DC compressor 210 for compressing;
A condenser 220 positioned at one side of the DC compressor 210 to condense the refrigerant compressed by the DC compressor 210;
A condenser cooling fan 230 positioned on one side of the condenser 220 to forcibly cool the condenser 220;
An expansion valve 240 positioned in an evaporator case C3 positioned on a ceiling of a cab of a vehicle to expand the refrigerant condensed by the condenser 220;
An evaporator (250) positioned on one side of the expansion valve (240) to evaporate the refrigerant expanded by the expansion valve (240); And
Located on one side of the evaporator 250, the refrigeration vehicle cooling apparatus comprising an evaporator blower fan 260 for forcibly blowing the cold air of the evaporator 250 to the freezer through a duct extending to the cab or the freezer. According to claim 1, wherein the freezing means 100,
A compressor (110) provided in the engine room (ER) of the vehicle to compress the refrigerant when the engine (E) is driven;
A condenser (120) positioned in the condensing cabinet (C1) to condense the refrigerant compressed by the compressor (110);
A condenser cooling fan 130 positioned at one side of the condenser 120 to forcibly cool the condenser 120;
A heat exchanger (140) positioned in an evaporator cabinet (C2) installed at an upper front side of the inside of the freezer of the vehicle to heat exchange the refrigerant condensed by the condenser (120) or the refrigerant flowing into the compressor (110);
An expansion valve (150) positioned on one side of the heat exchanger (140) to expand the refrigerant exchanged by the heat exchanger (140);
An evaporator (160) positioned on one side of the expansion valve (150) to evaporate the refrigerant expanded by the expansion valve (150); And
Located on one side of the evaporator 160, refrigeration vehicle cooling apparatus comprising an evaporator blower fan 170 for forcibly blowing the cold air of the evaporator 160 to the freezer. delete The method of claim 1, wherein the DC compressor 210,
Cooling device for a refrigeration vehicle, characterized in that the low-voltage hermetic compressor driven by receiving the operating power of DC 24V from the battery (not shown) of the vehicle or the operating power supply means (not shown) provided in the parking lot or loading dock.

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