KR102415895B1 - External fridge for smart mobility and compact electric car comprising the same - Google Patents

Abstract

According to the present invention, an external refrigerator for smart mobility and a small electric vehicle equipped with the same include a cargo installed behind the vehicle and formed with a refrigerating compartment opened and closed by a door, a roof carrier installed on a roof of the vehicle, and a freezing system for providing a freezing cycle for refrigerating the refrigerating compartment. In detail, the freezing system is installed inside the cargo so as to exchange heat between an evaporator, in which an evaporation process is performed, and the refrigerating compartment of the cargo, a compressor and a condenser are installed in the roof carrier, and an expansion valve is installed in the cargo or the roof carrier. Therefore, when using the external refrigerator for smart mobility and a small electric vehicle equipped with the same according to the present invention, a freezing system can be installed separately as a cargo and a roof carrier outside the vehicle, thereby having an advantage that the refrigerating compartment can be secured as wide as possible.

Description

External refrigerator for smart mobility and compact electric car comprising the same}

The present invention relates to an external refrigerator for smart mobility suitable for a small electric vehicle for delivery purposes, and a small electric vehicle having the same.

Recently, research and development of electric vehicles operated by electric energy as an eco-friendly means of transportation are active.

Republic of Korea Patent Publication No. 10-2020-0042988 (published date; April 27, 2020) discloses a 'battery for an electric vehicle and a control method therefor'. Looking at this prior patent, a technology related to a miniaturized electric vehicle of a smart mobility concept is disclosed.

However, small electric vehicles are widely distributed for personal transportation or short-distance delivery purposes, but for smart mobility purposes, only the driver's seat is built without a trunk space, and only the minimum functions necessary for driving are equipped, so it is difficult to use for refrigerated delivery such as fresh food. there is

Republic of Korea Patent Publication No. 10-2020-0042988 (published date; April 27, 2020)

The present invention has been devised to solve the above problems, and it can be integrally installed outside the vehicle without damaging the exterior of the vehicle, and the external refrigerator for smart mobility in which the refrigerating compartment can be secured as wide as possible, and a small electric vehicle having the same aims to provide

An external refrigerator for smart mobility according to the present invention for realizing the above object includes a cargo installed behind a vehicle and having a refrigerating compartment opened and closed by a door, a roof carrier installed on the roof of the vehicle, and refrigeration for refrigerating the refrigerating compartment. a refrigeration system that establishes a cycle; The refrigeration system is installed in the cargo so that the evaporator in which the evaporation process is performed can exchange heat with the refrigerating compartment of the cargo, the compressor and the condenser are installed in the roof carrier, and an expansion valve is installed in the cargo or the roof carrier; is characterized by

the cargo includes a front protrusion protruding toward the front so as to be interposed in a space between the rear of the roof carrier and the roof of the vehicle; Pipe holes through which the refrigerant pipe of the refrigeration system is installed may be formed on the upper surface of the front protrusion of the cargo.

The roof carrier may have an inlet through which external air is sucked into the condenser and an outlet through which waste heat generated by a condensation cycle of the condenser is discharged to the outside.

The inlet of the roof carrier may be formed at a lower portion of the rear of both side surfaces of the roof carrier, respectively, and the outlet of the roof carrier may be formed at the rear of the roof carrier, and may be formed at a higher position than the inlet of the roof carrier.

The compressor may be installed in front of the roof carrier, and the condenser may be installed in the rear of the roof carrier.

The condenser may further include a reheat exchanger installed inside the roof carrier so that waste heat generated by the condensation cycle in the condenser can exchange heat with the refrigerant circulated from the evaporator to the compressor.

A thermoelectric element installed inside the roof carrier so that an electromotive force can be generated by waste heat generated by the condensation process in the condenser, and a thermoelectric element installed inside the roof carrier to charge the electromotive force generated in the thermoelectric element It may include a charging unit that becomes

The present invention is an external refrigerator that is installed outside the vehicle, so it is suitable for a small electric vehicle that is mainly in the spotlight for short-distance delivery, etc., and since the refrigeration system can be separated into a cargo and a roof carrier, it does not damage the exterior of the vehicle and does not damage the weight, volume, etc. It can be distributed and can be applied simply and easily to small electric vehicles by efficient spatial arrangement.

In addition, according to the present invention, as the cargo is installed at the rear of the vehicle, it is convenient to use the refrigerator compartment of the cargo, and only the necessary components are minimally installed mainly on the evaporator that directly interacts with the cargo, and the rest are installed on the roof carrier, so that the refrigerator compartment can be secured as wide as possible. have.

In addition, since the present invention is an external refrigerator, it is detachable, and replacement and repair are convenient.

1 is a perspective view of a small electric vehicle equipped with an external refrigerator for smart mobility according to a first embodiment of the present invention;
2 is a block diagram of the external refrigerator shown in FIG. 1;
3 is a block diagram of an external refrigerator for smart mobility according to a second embodiment of the present invention;
4 is a block diagram of an external refrigerator for smart mobility according to a third embodiment of the present invention.

Hereinafter, a small electric vehicle equipped with an external refrigerator for smart mobility according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. Since the present invention can have various changes and can have various forms, specific embodiments are illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention. In describing each figure, like reference numerals have been used for like elements. In the accompanying drawings, the dimensions of the structures are enlarged than the actual size for clarity of the present invention.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as "comprise" or "have" are intended to designate that a feature, number, step, operation, component, part, or a combination thereof described in the specification exists, but one or more other features It is to be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

A preferred embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in FIGS. 1 and 2 , the external refrigerator for smart mobility according to the first embodiment of the present invention is suitable for a small electric vehicle with a narrow interior space but easy to use electricity among various vehicle types. A small electric vehicle is a vehicle (2) operated by electricity, and has a size and structure that only a driver can ride like a motorcycle for the purpose of short-distance delivery of fresh food. That is, a small electric vehicle is a four-wheel drive vehicle (2) unlike a motorcycle, and has an interior space that is opened and closed by the door (11). There is no light, and only the minimum configuration necessary for the operation of the vehicle 2 is provided.

The external refrigerator for smart mobility of the present invention can be easily installed externally in a small electric vehicle having a narrow indoor space, and includes a cargo 10, a roof carrier 20, and a refrigeration system 30 do.

The cargo 10 can store fresh food and the like, and is provided with a refrigerator compartment 12 that is opened and closed by a door 11 . Since the cargo 10 has almost no configuration other than the evaporator 32 of the refrigeration system 30, most of the cargo 10 can be used as the refrigerating compartment 12, so that the refrigerating compartment 12 is secured as large as possible. can be In the refrigerating compartment 12 of the cargo 10 , an inlet 12a and an outlet 12b are formed to allow air circulation between the refrigerator 32 and the evaporator 32 of the refrigeration system 30 . An evaporator 32 of the refrigeration system 30 is installed between the refrigerating compartment 12 of the cargo 10 and the outer surface of the cargo 10, and between the refrigerating compartment 12 of the cargo 10 and the A machine room 14 in which air circulation is made may be formed. In the machine room 14 of the cargo 10, a blower fan 16 for smooth air circulation is installed at a position corresponding to at least one of the intake port 12a and the discharge port 12b of the refrigerating compartment 12. can

The cargo 10 may be installed behind the vehicle 2 for convenient use. The front of the cargo 10 may be formed to correspond to the rear of the vehicle 2 so as to be integrated with the vehicle 2 by being close to the rear of the vehicle 2 . The cargo 10 may include a front protrusion 10a in which the upper portion of the cargo 10 protrudes forward by a predetermined length so as to be interposed in the space between the rear of the roof carrier 20 and the roof of the vehicle 2 . can Piping holes (not shown) may be formed on the upper surface of the front protrusion 10a of the cargo 10 to enable refrigerant piping work. As such, as the front protrusion 10a of the cargo 10 is formed, a refrigerant piping operation between the cargo 10 and the roof carrier 20 can be made simply, and the cargo 10 and the roof carrier 20 ) is separated, the refrigerant pipe can be hidden so as not to be exposed to the outside, so that the exterior of the vehicle 2 is not damaged, and the refrigeration cycle can be smoothly operated without being influenced by the outside.

On the other hand, a groove (10b) in which a license plate, etc. can be installed may be formed on the lower rear surface of the cargo (10). A tray 4 may be installed behind the vehicle 2 so that the cargo 10 can be placed thereon.

The roof carrier 20 is installed on the roof of the vehicle 2 . A roof rack 6 may be installed on the roof of the vehicle 2 so that the roof carrier 20 can be conveniently mounted, and accordingly, the roof carrier 20 can be conveniently installed and detachable, and also the roof A free space is formed between the rear of the carrier 20 and the roof of the vehicle 2 so that the front protrusion 10a of the cargo 10 can be easily interposed therebetween.

An inner space in which the refrigeration system 30 is stored is formed in the roof carrier 20 . The roof carrier 20 can be opened and closed so as to be loaded on the upper side of the accommodating part 22 and the accommodating part 22 with an open top surface to cover the open upper surface of the accommodating part 22, and the accommodating part ( 22) may include a cover portion 24 that is hinged to one side. Inlet 20a and outlet 20b are formed in the roof carrier 20 so that external air can circulate for heat exchange with refrigerant in the condenser 36 of the refrigeration system 30 . The exhaust port 20b of the roof carrier 20 discharges waste heat generated by the condenser 36 to the outside, and the roof carrier 20 exhausts the exhaust heat to the rear of the vehicle 2 when the vehicle 2 is driven. It is preferably formed on the back surface of The outlet 20b of the roof carrier 20 may be formed at a higher position than the inlet 20a of the roof carrier 20, and accordingly, the outlet 20b of the roof carrier 20 and the roof carrier ( The air flow on the inlet side of the 20) does not interfere with each other, and the outlet 20b of the roof carrier 20 may be formed far from the cargo 10 side. The inlet 20a of the roof carrier 20 has both sides of the roof carrier 20 so as to be close to the condenser 36 as the condenser 36 is installed at the rear of the roof carrier 20, as will be described later. Each may be formed in the rear. A blower fan 26 positioned to correspond to at least one of the inlet 20a of the roof carrier 20 and the outlet 20b of the roof carrier 20 is provided inside the roof carrier 20 to facilitate air circulation. ) can be installed.

The refrigeration system 30 repeats the state change while sequentially circulating the refrigerant evaporation->compression->condensation->expansion cycle for the freezing or refrigerating action. That is, the refrigeration system 30 includes an evaporator 32 , a compressor 34 , a condenser 36 , and an expander 38 . The refrigeration system 30 may be driven by receiving electricity from a driving battery of a small electric vehicle, or a battery capable of being charged in the same manner as a separate electric vehicle may be separately mounted.

The evaporator 32 undergoes an evaporation process in which the refrigerant absorbs heat from the surroundings and evaporates, and in this process, the ambient temperature from which heat is lost by the evaporator 32 is lowered. Accordingly, the evaporator 32 is installed inside the cargo 10 , that is, in the machine room 14 of the cargo 10 , to directly exchange heat with the refrigerating compartment 12 of the cargo 10 .

The compressor 34 and the condenser 36 are installed inside the roof carrier 20 . The compressor 34 is positioned in front of the roof carrier 20 so that the condenser 36 can be installed close to the inlet 20a of the roof carrier 20 and the outlet 20B of the roof carrier 20 . is installed, and the condenser 36 may be installed at the rear of the roof carrier 20 .

The expander may be composed of an expansion valve 38 , and may be installed in the cargo 10 , or may be installed in the roof carrier 20 because the volume is not large.

The effect of the external refrigerator for smart mobility applied to a small electric vehicle according to an embodiment of the present invention configured as described above will be described in detail as follows.

The refrigerant compressed in the compressor (34) is condensed by heat exchange with external air in the condenser (36), expanded by the expansion valve (38), and then circulated to the evaporator (32). At this time, the external air sucked into the condenser 36 through the inlet 20a of the roof carrier 20 absorbs heat from the refrigerant in the condenser 36 to increase the temperature, and then the air outlet of the roof carrier 20 ( 20b).

The refrigerant circulated to the evaporator 32 takes heat from the air sucked from the refrigerating compartment 12 and evaporates, and then circulates again to the compressor 34 . The air in the refrigerating compartment 12 sucked into the evaporator 32 radiates heat to the refrigerant in the evaporator 32 and returns to the refrigerating compartment 12 of the cargo 10 in a lowered state to return to the cargo ( The refrigerating compartment 12 of 10) may be kept refrigerated.

Hereinafter, in describing other embodiments of the present invention, duplicate descriptions with the above-described embodiment of the present invention will be omitted for clear understanding.

As shown in FIG. 3 , the external refrigerator for smart mobility according to the second embodiment of the present invention will be described in detail as follows.

An external refrigerator for smart mobility according to another embodiment of the present invention includes a cargo 10 , a roof carrier 20 , and a refrigeration system 30 , and the refrigeration system 30 includes a reheat exchanger 40 . It is characterized in that it further comprises.

The reheat exchanger (40) allows the waste heat generated by the condensation cycle in the condenser (36) and the refrigerant circulated from the evaporator (32) to the compressor (34) to exchange heat. The reheat exchanger 40 is preferably installed inside the roof carrier 20 so as not to affect the size of the refrigerating compartment 12 of the cargo 10 . The reheat exchanger 40 may be installed to be located at a rear side of the condenser 36 so that external air that has absorbed heat from the condenser 36 passes therethrough. Therefore, the high-temperature external air that has absorbed heat in the condenser 36 radiates heat to the refrigerant in the re-heat exchanger 40, so that the temperature is lowered and can be discharged to the outside at approximately room temperature, thereby reducing the impact on the surrounding environment. In the reheat exchanger 40 , the refrigerant absorbs heat and evaporates once more to be sufficiently vaporized, thereby preventing liquid compression in the compressor 34 .

Accordingly, the refrigerant compressed in the compressor 34 circulates through the condenser 36 , the expansion valve 38 , and the evaporator 32 in sequence, and passes through the reheat exchanger 40 , and then again the compressor 34 . ) is cycled.

As shown in FIG. 4 , the external refrigerator for smart mobility according to the third embodiment of the present invention will be described in detail as follows.

An external refrigerator for smart mobility according to another embodiment of the present invention includes a cargo 10 , a roof carrier 20 , and a refrigeration system 30 , and further includes a thermoelectric element 50 and a charging unit 60 . include

The thermoelectric element 50 is installed inside the roof carrier 20 , and an electromotive force due to the Seebeck effect is generated by waste heat generated by a condensation process in the condenser 36 . That is, when waste heat on the side of the condenser 36 is guided to either side of a pair of terminals of the thermoelectric device 50 , an electromotive force may be generated in the thermoelectric device 50 due to a temperature difference between the pair of terminals. The thermoelectric element 50 may be installed behind the condenser 36 , and thus the condenser 36 side waste heat can be directly consumed in the thermoelectric element 50 , and is used in the thermoelectric element 50 . The remaining waste heat may be directly discharged through the outlet of the roof carrier 20 .

The charging unit 60 is installed inside the roof carrier 20 to charge the electromotive force generated in the thermoelectric element 50 . The charging unit 60 may include a separate battery for the refrigeration system 30 .

Therefore, the waste heat from the condenser 36 side can be consumed by the thermoelectric element 50 and discharged to the outside at about room temperature, and the efficiency can be improved by using the thus charged power to drive the refrigeration system 30 . In addition, inconvenience caused by electric charging can be eliminated.

The description of the presented embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope of the invention. Thus, the present invention is not to be limited to the embodiments presented herein, but is to be construed in the widest scope consistent with the principles and novel features presented herein.

2; vehicle 10; cargo
12; refrigerator 20; roof carrier
30; refrigeration system 32; evaporator
34; compressor 36; condenser
38; expansion valve 40; reheat exchanger
50; thermoelectric element 60; live part

Claims (8)

A cargo with a refrigerator installed behind the vehicle and opened and closed by a door;
a roof carrier installed on the vehicle roof;
and a refrigeration system for establishing a refrigeration cycle for refrigeration of the refrigerating compartment;
The refrigeration system is installed inside the cargo so that the evaporator in which the evaporation process is performed can exchange heat with the refrigerator compartment of the cargo, a compressor and a condenser are installed in the roof carrier, and an expansion valve is installed in the cargo or the roof carrier,
A refrigerating chamber and a machine room in which air circulates with the refrigerating chamber are formed in the cargo;
In the refrigerating compartment, suction ports are formed to face each other so that air flows in from both directions, and a discharge port is formed to discharge the introduced air to the machine room. Inflow, characterized in that the cooling efficiency is increased
External refrigerator for smart mobility.

The method according to claim 1,
the cargo includes a front protrusion formed to protrude forward so as to be interposed in a space between the rear of the roof carrier and the roof of the vehicle;
An external refrigerator for smart mobility, characterized in that on the upper surface of the front protrusion of the cargo, pipe holes through which the refrigerant pipe of the refrigeration system is installed are formed. The method according to claim 1,
An external refrigerator for smart mobility, characterized in that the roof carrier has an inlet through which external air is sucked into the condenser and an outlet through which waste heat generated by a condensation cycle of the condenser is discharged to the outside. 4. The method according to claim 3,
The inlet of the roof carrier is formed in the lower portion of both sides of the rear of the roof carrier, respectively,
The outlet of the roof carrier is formed on the rear surface of the roof carrier, and the external refrigerator for smart mobility, characterized in that it is formed at a position higher than the inlet of the roof carrier. The method according to claim 1,
The compressor is installed in front of the roof carrier, and the condenser is installed in the rear of the roof carrier. The method according to claim 1,
The external refrigerator for smart mobility further comprising a reheat exchanger installed inside the roof carrier so that waste heat generated by the condensation process in the condenser can exchange heat with the refrigerant circulated from the evaporator to the compressor. The method according to claim 1,
A thermoelectric element installed inside the roof carrier so that an electromotive force can be generated by waste heat generated by the condensation process in the condenser, and a thermoelectric element installed inside the roof carrier to charge the electromotive force generated in the thermoelectric element An external refrigerator for smart mobility that further includes a charging unit. In the small electric vehicle provided with the external refrigerator for smart mobility according to any one of claims 1 to 7,
The vehicle is a single-seater and is operated by electricity, a tray on which the cargo is loaded is installed in the rear, and a roof rack on which the roof carrier can be mounted is installed on the roof.

Images