KR102218078B1 - Movable air conditioner - Google Patents

Abstract

In the mobile air conditioner according to the present invention, a drain pan is disposed above the outdoor heat exchange unit disposed in the lower receiving space, an indoor heat exchange unit is disposed above the drain pan, and a control box is mounted on the drain pan, but the heat sink of the control box A partial region is exposed to the upper receiving space, and another partial region is exposed to the lower receiving space.

Description

Mobile air conditioner {MOVABLE AIR CONDITIONER}

The present invention relates to a mobile air conditioner, and more particularly, to a mobile air conditioner capable of effectively cooling a control box using a flow of air sucked into the mobile air conditioner or a flow of cooled air.

In general, a mobile air conditioner has a form in which components such as a compressor, an evaporator (generally an indoor heat exchanger), an expansion valve, and a condenser (generally an outdoor heat exchanger) are integrated into a single product.

The mobile air conditioner can be manufactured as a single product by arranging the evaporator and the condenser in a partitioned space for easy movement and installation.

The mobile air conditioner is manufactured by installing an evaporator and a condenser in a single case unlike a general air conditioner in which an indoor unit and an outdoor unit are separately provided.

The mobile air conditioner generally performs only the cooling function of cooling indoor air, but the cooling cycle and the heating cycle may be switched by allowing reverse circulation of the refrigerant.

Since the mobile air conditioner is easy to move and install, the user can easily place and install the mobile air conditioner in a desired location without the help of a specialist who has acquired a separate technology for installation.

Mobile air conditioners are trending toward miniaturization to facilitate movement and installation. It is preferable that the parts constituting the mobile air conditioner are efficiently arranged inside the mobile air conditioner so that numerous parts can be installed inside the miniaturized product.

In addition, a control box for controlling the mobile air conditioner is installed inside the mobile air conditioner. The control box contains heating elements such as inverters. Efficient cooling of the heating element is very important for the stable operation of the mobile air conditioner.

1 and 2 show a cooling structure of a heating element of a conventional mobile air conditioner.

As shown, the conventional mobile air conditioner 100 includes a control unit for controlling an inverter, and the control unit includes a printed circuit board 210 on which elements are mounted. The printed circuit board 210 includes a heating element 212 that generates heat during operation. A heat sink 215 is attached to dissipate heat generated from the heating element 212.

In addition, the heat sink 215 has a structure in which the heat sink 215 is disposed inside the intake passage 112 of the outdoor heat exchanger so that the heat sink 215 can be cooled by the flow of air.

However, this structure has a problem in that the heat sink 215 and the heating element 212 act as resistance to the flow of air, and also increases the temperature of the air flowing into the outdoor heat exchanger, thereby reducing the efficiency of the outdoor heat exchanger. there was.

In addition, since external air that has not been filtered is introduced and comes into contact with the printed circuit board 210 on which electronic devices are mounted, moisture or foreign substances (dust, pollen, etc.) are attached to the printed circuit board 210, causing failure or malfunction. I had a problem that could occur.

Korean Patent Publication No. 10-2008-0003528

An object of the present invention is to provide an air conditioner capable of cooling a heating element of a control box provided in a mobile air conditioner.

Another object of the present invention is to provide a structure in which a heat sink is disposed in a heating element of a control box provided in a mobile air conditioner, and the heat sink can be cooled by the flow of air generated during operation of the air conditioner. .

Another object of the present invention is to cool the heat generated from the heating element by using the cooled air discharged from a mobile air conditioner to improve the reliability of the product.

Another object of the present invention is to provide an efficient component arrangement structure for miniaturization of a mobile air conditioner.

The mobile air conditioner according to the present invention provides a structure capable of effectively cooling a heat sink provided in a control box that controls an outdoor heat exchange unit, an indoor heat exchange unit, and a refrigerant circuit unit including a compressor.

In the mobile air conditioner according to the present invention, a drain pan is disposed above the outdoor heat exchange unit disposed in the lower receiving space, an indoor heat exchange unit is disposed above the drain pan, and a control box is mounted on the drain pan, but the heat sink of the control box A partial region is exposed to the upper receiving space, and another partial region is exposed to the lower receiving space.

The present invention includes a casing forming the exterior, a drain pan that divides the receiving space provided inside the casing into a lower receiving space and an upper receiving space, and a control box for controlling a refrigerant circuit, wherein the control box cools the heating component. A structure is provided in which a heat sink is mounted on a drain pan to be accommodated in the drain pan, and air in an upper region of the drain pan and air in a lower region of the drain pan communicate with each other through the heat sink.

In the present invention, an outdoor heat exchanger is disposed below the drain pan, an indoor heat exchanger is disposed above the drain pan, and a second portable air conditioner with a control box mounted on the drain pan is installed adjacent to the indoor heat exchanger. It includes an auxiliary cooling passage connected to the blowing unit and passing through the indoor heat exchanger to guide the cooled air to the heat sink.

The mobile air conditioner according to the present invention has the effect of improving product performance and reliability since the heat sink disposed in the heating element can be effectively cooled by the flow of air.

The mobile air conditioner according to the present invention can effectively cool the heating element without using a separate cooling fan or cooling device by guiding the flow of air generated during the operation of the air conditioner to a heat sink disposed in the heating element.

The mobile air conditioner according to the present invention uses air cooled by the operation of the mobile air conditioner to cool the heating element disposed inside the mobile air conditioner. In addition, the mobile air conditioner according to the present invention has the effect of efficiently utilizing the cooled air by allowing the air cooled by the heating element to be discharged to the indoor side.

In addition, the mobile air conditioner according to the present invention has the effect of reducing the overall size of the mobile air conditioner by efficiently arranging the components contained therein.

In addition to the above-described effects, specific effects of the present invention will be described together while describing specific details for carrying out the present invention.

1 and 2 are diagrams for explaining a cooling structure of a heating element of a conventional mobile air conditioner.
3 is a perspective view of a mobile air conditioner according to an embodiment of the present invention.
4 is a longitudinal sectional view of the mobile air conditioner shown in FIG. 2.
5 is an exploded perspective view of the mobile air conditioner shown in FIG. 3.
6 is an exploded perspective view showing a control box and a drain pan of a mobile air conditioner according to an embodiment of the present invention.
7 is an exploded perspective view showing a state in which the control box of FIG. 6 is additionally separated.
8 is a side view showing a combined state of a control box and a drain pan of the mobile air conditioner according to the present invention.
9 is a cross-sectional view taken along line AA of FIG. 8.
10 and 11 are perspective views showing a combined state of a control box and a drain pan of a mobile air conditioner according to the present invention.
12 is a perspective view showing a state in which the inlet grill is removed in the mobile air conditioner shown in FIG. 1.
FIG. 13 is a schematic cross-sectional view taken along BB of the mobile air conditioner shown in FIG. 12.
14 is a state diagram schematically showing the air flow of the outdoor heat exchanger in the air conditioner according to the embodiment of the present invention.
FIG. 15 is a view schematically showing the air flow flowing to the heat sink in the air conditioner shown in FIG.
16 is a view showing a coupling structure between a control box and a drain pan according to another embodiment of the present invention.
17 is a view showing a heat sink cooling structure of a control box according to another embodiment of the present invention.
18 is a view showing a heat sink cooling structure of a control box according to another embodiment of the present invention.
19 is a view showing a heat sink cooling structure of a control box according to another embodiment of the present invention.
20 is a perspective view showing a state in which a control box is installed in a drain pan according to another embodiment of the present invention.

The above-described objects, features, and advantages will be described later in detail with reference to the accompanying drawings, and accordingly, one of ordinary skill in the art to which the present invention pertains will be able to easily implement the technical idea of the present invention. In describing the present invention, when it is determined that a detailed description of known technologies related to the present invention may unnecessarily obscure the subject matter of the present invention, a detailed description will be omitted. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to indicate the same or similar elements.

Hereinafter, it means that an arbitrary component is disposed on the "top (or lower)" of the component or the "top (or lower)" of the component, the arbitrary component is arranged in contact with the top (or bottom) of the component. In addition, it may mean that other components may be interposed between the component and any component disposed on (or under) the component. (Optional according to the technical field)

In addition, when a component is described as being "connected", "coupled" or "connected" to another component, the components may be directly connected or connected to each other, but other components are "interposed" between each component. It is to be understood that "or, each component may be "connected", "coupled" or "connected" through other components. (Optional according to the technical field)

3 is a perspective view of a mobile air conditioner according to an embodiment of the present invention, FIG. 4 is a longitudinal sectional view of the mobile air conditioner shown in FIG. 2, and FIG. 5 is an exploded view of the mobile air conditioner shown in FIG. It is a perspective view.

3 to 5, the mobile air conditioner 1000 according to the present invention includes a housing 1100 forming an exterior, a compressor 1200, an outdoor heat exchanger 1300, and a first blowing unit ( 1400, an indoor heat exchanger 1500, a second blowing unit 1600, a base plate 1700, a drain pan 1800 and a control box 1900.

The housing 1100 may be divided into a front housing 1100a forming a front exterior and a rear housing 1100b forming a rear exterior. The housing 1100 may be divided into a larger number, or may be formed of a single housing forming the front and rear and side appearances.

In describing the mobile air conditioner 1000 according to the present invention, the side on which the front housing 1100a is disposed is defined as a front side, and the side on which the rear housing 1100b is disposed is defined as a rear side.

A base plate 1700 and a drain pan 1800 are disposed inside the housing 1100. The drain pan 1800 partitions the interior space of the housing 1100 up and down. The base plate 1700 forms the exterior of the bottom of the mobile air conditioner 1000.

The base plate 1700 is coupled to the lower portion of the housing 1100 and serves to support components installed inside the housings 1100a and 1100b.

The mobile air conditioner 1000 is configured so that the refrigerant circulates inside the mobile air conditioner 1000, and the refrigerant circulating inside the mobile air conditioner 1000 can exchange heat with the surrounding air twice.

An outdoor heat exchanger 1300 and an indoor heat exchanger 1500 are provided in the accommodation space inside the mobile air conditioner 1000 so that the refrigerant and the surrounding air can exchange heat.

If the outdoor heat exchanger 1300 and the indoor heat exchanger 1500 are arranged in a single space where there is no distinction, the air heat exchanged in the outdoor heat exchanger 1300 affects heat exchange made in the indoor heat exchanger 1500. In addition, the air heat-exchanged in the indoor heat exchanger 1500 affects heat exchange made in the outdoor heat exchanger 1300. As a result, the overall heat exchange performance of the mobile air conditioner 1000 may be deteriorated.

In consideration of this point, the outdoor heat exchanger 1300 and the indoor heat exchanger 1500 are disposed in a space separated vertically. In addition, the upper and lower sections of the outdoor heat exchanger 1300 and the indoor heat exchanger 1500 are formed by a drain pan 1800.

In the mobile air conditioner 1000 according to the present invention, an internal accommodation space is divided into a second accommodation space on the upper side and a first accommodation space on the lower side by the drain pan 1800.

In the second accommodation space, an indoor heat exchanger 1500 and a second blowing unit 1600 adjacent thereto are disposed. The indoor heat exchanger 1500 and the second blowing unit 1600 are coupled to the upper portion of the drain pan 1800. The drain pan 1800 serves to separate the second accommodation space from the first accommodation space and to fix the indoor heat exchanger 1500 and the second blowing unit 1600 disposed in the second accommodation space.

An outdoor heat exchanger 1300 and a first blowing unit 1400 adjacent thereto are disposed in the first accommodation space. The outdoor heat exchanger 1300 and the first blowing unit 1400 are coupled to the base plate 1700. In addition, the compressor 1200 is also coupled to the base plate 1700.

The top surface of the outdoor heat exchanger 1300 and the first blowing unit 1400 mounted on the base plate 1700 may support the bottom surface of the drain pan 1800. This structure can ensure structural stability of components such as the drain pan 1800 and the indoor heat exchanger 1500 and the second blowing unit 1600 coupled thereto.

A compressor 1200, an outdoor heat exchanger 1300, and a first blowing unit 1400 are mounted on the base plate 1700, and an indoor heat exchanger 1500, a second blowing unit 1600, and a drain pan 1800 are mounted. The control box 1900 is mounted.

The outdoor heat exchanger is for discharging hot air generated from the outdoor heat exchanger 1300 to the outside, and includes a base plate 1700, a compressor 1200, an outdoor heat exchanger 1300, and a first blowing unit 1400. do.

The indoor heat exchanger is for discharging the cold air generated through the indoor heat exchanger 1500 to the outside of the housing, and the drain fan 1800, the indoor heat exchanger 1500, the second blowing unit 1600 and the control box 1900 ).

The housing 1100 includes an air intake port through which external air can be introduced into the rear housing, and a discharge port through which air inside the housing can be discharged to the outside.

The air intake port includes a lower inlet port 1130 and an upper inlet port 1140. The discharge port includes an outdoor discharge port 1135 and an indoor discharge port 1145.

The air sucked through the lower suction port 1130 is heat-exchanged through the outdoor heat exchanger 1300 and then discharged through the outdoor discharge port 1135. The outdoor discharge port 1135 is connected to a window through an exhaust pipe 1150.

The air sucked through the upper suction port 1140 is heat-exchanged through the indoor heat exchanger 1500 and then discharged to the indoor space through the indoor discharge port 1145.

It is preferable that the indoor discharge port 1145 is provided with a discharge door 1550 so that the opening and closing of the indoor discharge port 1145 can be controlled according to the operating state of the mobile air conditioner. As shown in the figure, when the indoor discharge port 1145 is disposed on the upper surface, dust, etc., may enter through the indoor discharge port 1145. Therefore, when the portable air conditioner is not used, the discharge door 1550 is the indoor discharge port. It is desirable to close (1145).

The lower suction port 1130 is equipped with a lower suction port filter 1130f and a lower suction port grill 1130g. The lower inlet filter 1130f serves to remove foreign substances mixed with air flowing into the first accommodation space of the mobile air conditioner. The lower inlet grill (1130g) serves to fix the lower inlet filter (1130f), to regulate the flow of air flowing into the lower inlet (1130), and to improve the appearance quality of the mobile air conditioner. do.

The upper suction port 1140 is equipped with an upper suction port filter 1140f and an upper suction port grill 1140g. The upper inlet filter 1140f serves to remove foreign substances mixed with air flowing into the second accommodation space of the mobile air conditioner.

When the mobile air conditioner according to the present invention performs a general cooling operation, the outdoor heat exchanger 1300 operates as a condenser and the indoor heat exchanger 1500 operates as an evaporator.

The outdoor heat exchanger includes an outdoor heat exchanger 1300 and a first blowing unit 1400.

The first blowing unit 1400 includes an orifice 1410 that guides air passing through the outdoor heat exchanger 1300 to flow into the first blowing unit 1400, and a blowing fan that generates air flow by rotation. It includes 1420, a blower motor 1430 that provides power to rotate the blower fan 1420, and a flow path case 1440 that provides a path through which air accelerated from the blower fan 1420 is discharged.

The air sucked through the lower suction port 1130 passes through the lower suction port filter 1130f and foreign substances are removed, and then heats by heat exchange with the refrigerant in the outdoor heat exchanger 1300, and then passes through the first blowing unit 1400. It is accelerated and then discharged through the outdoor discharge port 1135. An exhaust pipe 1150 is connected to the outdoor discharge port 1135. The exhaust pipe 1150 is connected to an installation kit (not shown) installed on the window. Therefore, the heated air sent to the outdoor discharge port 1135 is discharged to the outside through the exhaust pipe 1150.

The refrigerant circuit unit which operates to perform heat exchange with air while circulating the refrigerant includes an outdoor heat exchange unit, an indoor heat exchange unit, and a compressor 1200.

The control box 1900 controls the refrigerant circuit. The control box 1900 includes a printed circuit board 1910 on which various elements are mounted, a frame 1920 surrounding the printed circuit board 1910, and a printed circuit board 1910 coupled to the frame 1920. A first casing 1930 for shielding one surface and a second casing 1940 for shielding the other surface of the printed circuit board 1910 coupled to the frame 1920.

A detailed configuration of the control box 1900 will be described later with reference to FIGS. 6 to 7.

6 is an exploded perspective view showing a control box and a drain pan of the mobile air conditioner according to an embodiment of the present invention, and FIG. 7 is an exploded perspective view showing a state in which the control box of FIG. 6 is additionally separated.

As shown, the control box 1900 is coupled to the drain pan 1800.

The control box 1900 includes a printed circuit board 1910 on which an electronic device is mounted. The printed circuit board has a heating element 1912 disposed on one side thereof. In addition, a heat sink 1915 is disposed in contact with the heating element 1912 in order to dissipate heat generated from the heating element 1912.

The control box 1900 includes casings 1930 and 1940 for preventing foreign substances from flowing into internal electronic components. The heat sink 1915 is disposed in a form exposed to the outside of the casings 1930 and 1940. The control box 1900 includes a heating element 1912 that generates heat during operation,

If the heat generated by the heating element 1912 is not properly discharged, a malfunction or failure may occur due to overheating of the inside of the control box 1900. Heat of the heating element 1912 is discharged to the outside through the heat sink 1915. The heating element 1912 includes a power semiconductor.

The control box 1900 includes a frame 1920 surrounding the edge of the printed circuit board 1910, a first casing 1930 sealing one side of the frame 1920, and the other side of the frame 1920. It includes a second casing 1940 to seal.

At this time, it is preferable that the first casing seals one side of the frame, but exposes the heat sink 1915 to the outside. As shown, the heat sink 1915 is disposed under the printed circuit board 1910, and the first casing 1930 is to seal the upper section of the heat sink 1915 excluding the heat sink 1915.

The frame 1920 is coupled in a form surrounding the border of the printed circuit board 1910. The frame 1920 includes a first rib 1922 and a second rib 1924 protruding toward the first casing 1930. It is preferable that the first rib 1922 is formed immediately above the heat sink 1915.

The first casing 1930 is coupled to seal a section between the first rib 1922 and the second rib 1924. In other words, the lower section of the first rib 1922 provided in the frame 1920 is not accommodated in the casings 1930 and 1940 but is exposed to the outside. A heating element 1912 and a heat sink 1915 are disposed in the lower section of the first rib 1922.

Meanwhile, the first rib 1922 of the frame 1920 may be formed in a shape that does not pass through a third opening 1812 to be described later formed in the drain pan 1800. In other words, the first rib 1922 of the frame 1920 may perform the role of a stepped over the drain pan 1800.

The second casing 1940 may include a fitting groove 1942 coupled with a fitting protrusion 1842 formed in the drain pan 1800. When the fitting protrusion 1842 is completely coupled to the fitting groove 1942, the second casing 1940 may no longer descend. When the control box 1900 is coupled through the third opening 1812 of the drain pan 1800, the first casing 1930 is hung by the stepped, and the fitting groove 1942 of the second casing 1940 Since the fitting protrusion 1842 is inserted and coupled, the control box 1900 may be coupled to the drain pan 1800 so as to be fixed at a predetermined position.

On the other hand, the portion where the heat sink 1915 is disposed under the control box 1900 is coupled in a form accommodated in the drain pan 1800, and the coupling stability between the control box 1900 and the drain pan 1800 is secured. In order to do so, it is necessary to secure the mating height.

In other words, it is preferable that the height (thickness) of the drain pan 1800 in the section where the control box 1900 is coupled is enlarged compared to other parts.

Referring to FIG. 6, it can be seen that the left portion of the drain pan 1800 is formed thicker by (h1) than the right portion of the drain pan 1800. The drain pan 1800 plays a role of partitioning a space, supporting an indoor heat exchanger mounted thereon, and guiding condensate generated in the indoor heat exchanger.

A left portion of the drain pan 1800 may be referred to as a first base 1852, and a right portion of the drain pan 1800 may be referred to as a second base 1854. The first base 1852 is a portion to which the control box 1900 is mounted and is formed to be thicker than the second base 18540.

In the illustrated embodiment, the bottom surfaces of the first base 1852 and the second base 1854 have the same height and are formed to have a difference h1 from the height of the top surface, but on the contrary, the top surface is formed at the same height, and the bottom surface The difference in thickness can be generated by varying the height.

The thickness of the drain pan 1800 required to divide the space, support the indoor heat exchanger, and guide the condensed water is about the same as the second base 1854. However, when the entire drain pan 1800 is formed with a thickness of about the second base 1854, the height of the section in which the control box 1900 is coupled to the drain pan 1800 is too low, and the control box 1900 Fixation may be incomplete.

In consideration of this point, the drain pan 1800 of the mobile air conditioner according to the present invention has a different thickness of the first base 1852, which is the part where the control box 1900 is mounted (second base 1854). It is desirable to be formed thicker.

A plurality of bottom partition ribs 1820 may be formed in the drain pan 1800.

In addition, the bottom partition rib 1820 is for forming a plurality of seals on the upper surface of the drain pan 1800 and forming a space in which condensed water can flow. A plurality of bottom compartment ribs 1820 may be formed at equal intervals, and may be formed to protrude upward from the upper surface of the drain pan 1800.

Accordingly, a predetermined space is formed in the drain pan 1800 so that condensed water generated by the indoor heat exchanger 1500 can flow from the upper surface of the drain pan 1800.

In addition, a plurality of bottom condensation water holes 1830 are formed in the drain pan 1800. In addition, the bottom condensed water hole 1830 is for moving condensed water generated from the indoor heat exchanger 1500 and falling down to the lower portion of the drain pan 1800.

That is, the condensed water drop guide serves to induce the condensed water moved to the bottom of the drain pan 1800 to fall without flowing to other parts.

Accordingly, the condensed water drop guide is formed to protrude downward from the bottom surface of the drain pan 1800. More specifically, the condensed water drop guide is formed extending downward from each of the bottom condensed water holes 1830. The condensate drop guide is formed to extend downward from the bottom condensate hole 1830 and may have a cylindrical shape corresponding to the bottom condensate hole 1830.

Meanwhile, the drain pan 1800 may be provided with a plurality of regions formed so that components installed in the second accommodation space may be installed while avoiding interference.

8 is a side view showing a combined state of a control box and a drain pan of a mobile air conditioner according to the present invention, FIG. 9 is a cross-sectional view taken along line AA of FIG. 8, and FIGS. 10 and 11 are mobile air according to the present invention. It is a perspective view showing the combined state of the control box of the conditioner and the drain pan.

8 to 11, when the control box 1900 is coupled to the drain pan 1800, the heat sink 1915 exposed under the control box 1900 passes through the drain pan 1800 to exchange outdoor heat. It is exposed to the first area where the flags are arranged. In this case, an area exposing the heat sink 1915 to the first area is the second opening 1816.

The third opening 1812 described above is a part into which the heat sink 1915 is inserted, and the first opening 1814 is a part that allows air from the upper inlet 1140 to flow into the heat sink 1915, and the second opening Reference numeral 1816 is a part that allows air that has passed through the heat sink 1915 to flow into the first region.

Meanwhile, the third opening 1812 and the first opening 1814 may be formed to be separated from each other, but may be formed to be connected to each other. In addition, the second opening 1816 may be formed separately from the first opening 1814 or may be formed in a form connected to each other. The third opening 1812, the first opening 1814, and the second opening 1816 perform functionally distinct roles, but may be physically connected to each other.

The heat sink 1915 includes a conductive plate 1915a in contact with the heating element 1912 and a plurality of radiating fins 1915b connected to the conductive plate 1915a. The conductive plate 1915a is directly attached to the heating element 1912 or fixed to maintain a close contact state so as to receive heat from the heating element 1912 through conduction. At this time, thermal grease may be applied between the conductive plate 1915a and the heating element 1912.

The heat dissipation fins 1915b of the heat sink 1915 are exposed to the outside of the casings 1930 and 1940 of the control box 1900, and are formed to emit heat through contact with air. The heat sink 1915 may be made of copper or aluminum having excellent thermoelectric efficiency.

A plurality of radiating fins 1915b may be arranged side by side so as to enlarge a contact area with air. At this time, the arrangement direction of the radiating fins is preferably arranged parallel to the flow direction of the air flowing around the radiating fins 1915b. In the illustrated embodiment, the heat dissipation fins 1915b are arranged side by side in a horizontal direction to minimize resistance to airflow in the horizontal direction.

Even if the heat sink 1915 exposed from the control box 1900 is mounted on the drain pan 1800, it is preferable to allow the heat dissipation fins 1915b of the heat sink 1915 to be exposed to the outside.

To this end, the drain pan 1800 includes a second opening 1816 exposing the heat dissipation fin 1915b of the heat sink to the first region. The second opening 1816 serves to allow air cooled by the heat sink 1915 to be introduced into the second space and discharged to the outside.

A guide surface 1840 for guiding the mounting position of the control box 1900 is provided around the heat sink accommodation hole 1810. The guide surface 1840 is formed to support at least two surfaces of the control box 1900.

The guide surface 1840 serves to guide the control box 1900 to be coupled to the drain pan 1800 at a predetermined position.

Meanwhile, the drain pan 1800 may be provided with a holder 1845 for fixing wiring or piping. The holder 1845 serves as a fixture for fixing a wire connected to the control box 1900 or a refrigerant circulation pipe.

Looking at the cross section of FIG. 9, it can be seen that the first rib 1922 provided in the frame 1920 of the control box 1900 does not pass through the third opening 1812 formed in the drain pan 1800 but is strung. . In addition, the fitting protrusion 1842 of the drain pan 1800 is inserted into the fitting groove 1942 provided in the second casing 1940, so that both sides of the control box 1900 are constant with respect to the drain pan 1800. Maintains position and can be combined.

Referring to the drawings, the printed circuit board 1910 is accommodated in the first casing 1930 and the second casing 1940. The first casing 1930 and the second casing 1940 may be formed of a metal material. When the first casing and the second casing 1940 are formed of a metal material, electromagnetic waves emitted from the printed circuit board 1910 may be blocked.

Meanwhile, the frame of the control box 1900 may include a cable guide 1926 that crosses the second opening 1816. The cable guide 1926 may be formed in an L-shaped shape to surround the side and bottom surfaces of the heat sink 1915. The cable guide 1926 serves to check whether the control box 1900 is correctly coupled, the role of preventing the control box 1900 from being excessively inserted, and guiding the path of the wiring to the control box. Play a role. The cable guide 1926 may be formed in a'C'-shaped cross-section to accommodate wiring therein.

When the control box 1900 is coupled to the drain pan 1800, the heat sink 1915 is exposed to the first accommodation space through the first opening 1814 of the drain pan 1800 as shown in FIG. 10, As shown in FIG. 11, the heat sink 1915 is exposed to the second accommodation space through the second opening 1816 of the drain pan 1800.

The air cooling the heat sink 1915 flows into the first opening, cools the heat sink 1915, and then flows into the second accommodation space through the second opening 1816, and is discharged from the second accommodation space to the outside. .

FIG. 12 is a perspective view showing a state in which the inlet grill is removed in the mobile air conditioner shown in FIG. 1, and FIG. 13 is a schematic cross-sectional view B-B of the mobile air conditioner shown in FIG.

As shown, the upper suction port 1140 of the mobile air conditioner 1000 is a portion through which air is introduced into the second accommodation space. The upper inlet 1140 includes a main intake port 1140a in which air is introduced into the indoor heat exchanger 1500, and an auxiliary inlet 1140b in an area in which air for cooling the heat sink 1915 is introduced.

The auxiliary suction port 1140b may be provided with a vane 1140c for guiding the air sucked through the auxiliary suction port 1140b toward the heat sink 1915. As shown in FIG. 13, if the height of the auxiliary suction port 1140b is formed higher than the upper and lower height of the heat sink 1915, the flow rate of air flowing into the auxiliary suction port 1140b can be secured, and the auxiliary suction port ( By providing a vane 1140c inclined downward on the inner surface of 1140b), it is possible to smooth the flow of incoming air.

The auxiliary intake port 1140b, which is an area in which air for cooling the heat sink 1915, is sucked, and the area where the air is sucked into the indoor heat exchanger 1500 is arranged close to the main intake port 1140a, so that they are a single upper inlet. It is to form (1140). Such a structure may enhance the appearance by combining the upper suction port filter 1140f covering the entire upper suction port 1140 and the upper suction port grill 1140g. In addition, air for cooling the heat sink 1915 does not affect the air flowing into the indoor heat exchanger 1500.

In addition, since the air introduced into the heat sink 1915 also passes through the filter, it is possible to block foreign substances from being sucked into the interior of the mobile air conditioner.

The filter filters foreign substances such as dust mixed with air flowing into the air conditioner. If a filter is not provided at the intake port, dust or foreign matter accumulates inside the portable air conditioner, which may cause a short circuit or short circuit.

As it is made as described above, as shown by the arrow in FIG. 9, the air introduced from the outside through the auxiliary suction port 1140b flows toward the heat sink 1915, through which the heat sink 1915 is more It can be cooled efficiently.

14 is a state diagram schematically showing the air flow of the outdoor heat exchange unit in the air conditioner according to an embodiment of the present invention, and FIG. 15 is a view showing the air flow flowing to the heat sink in the air conditioner shown in FIG. It is a schematic diagram of a state of use.

As shown, the external air (F1) introduced through the auxiliary suction port (1140b) passes through the heat sink (1915) to cool the radiating fins (1915b) of the heat sink (1915).

Then, it flows to the lower portion of the drain pan 1800 and merges with the external air (F2) flowing through the main air inlet, is supplied with flow force by the first blowing unit 1400, and externally through the pipe connecting duct. Is discharged as.

As described above, it does not include a separate additional cooling configuration, and external air flows toward the heat dissipation fins 1915b of the heat sink 1915 through the design structure of the flow path, and the heat sink 1915 is cooled. In addition, heat generated from the heating element 1912 to which the heat sink 1915 is attached may be released.

Hereinafter, a control box cooling structure according to another embodiment of the present invention will be described. The following embodiments provide a structure for cooling a heat sink of a control box using air cooled inside a mobile air conditioner.

16 is a view showing a coupling structure between a control box and a drain pan according to another embodiment of the present invention, FIG. 17 is a view showing a heat sink cooling structure of a control box according to another embodiment of the present invention, and FIG. A diagram showing a heat sink cooling structure of a control box according to another embodiment of the present invention, and FIG. 19 is a view showing a heat sink cooling structure of a control box according to another embodiment of the present invention.

Referring to FIG. 16, in the mobile air conditioner according to the present embodiment, a heat sink 1915 is disposed on the control box 1900. The mobile air conditioner according to the present embodiment has a structure in which cooled air is discharged upward, and provides a structure for cooling the heat sink 1915 by branching the cooled air and guiding it to the heat sink 1915.

Since it has a structure in which the cooled air is discharged to the top, the heat sink 1915 is placed on the upper side of the control box 1900 to reduce the length of the auxiliary cooling channel (1690 in Fig. 17) to guide the cooled air. can do.

Referring to FIG. 17, the mobile air conditioner according to the present invention is characterized by having an auxiliary cooling passage 1690 through which air cooled to a heat sink 1915 of the control box 1900 can be supplied. The auxiliary cooling passage 1690 is formed in the second blowing unit 1600 disposed in the first accommodation space. The second blowing unit 1600 generates a flow through which air is blown through the indoor heat exchanger 1500 which is an evaporator.

The auxiliary cooling flow path 1690 formed in the second blowing unit 1600 is a flow path branched from the discharge part discharged to the interior, and air cooled by the heat sink 1915 which is a part to be cooled of the control box 1900 Plays the role of supplying

In the case of the embodiment shown in FIG. 17, the auxiliary cooling passage 1690 is formed to extend to the inner surface of the case through the heat sink 1915, and the auxiliary discharge port 1090 is provided in the case corresponding to the inner area of the auxiliary cooling passage 1690. Is formed.

The auxiliary cooling passage 1690 may be integrally formed with the second blowing unit 1600. The auxiliary cooling flow path 1690 is a flow path that guides the cooled air passing through the evaporator through the heat sink 1915. The auxiliary cooling passage 1690 may be integrally formed in the housing of the second blowing unit 1600. Another embodiment may be composed of a portion integrally formed with the second blowing unit 1600 and a portion integrally formed in the front housing (1100a in FIG. 4 ).

In other words, the auxiliary cooling passage 1690 may be configured in a form in which a part of the second blowing unit 1600 and a part of the front housing 1100a are combined.

In this embodiment, the cooled air is discharged to the outside via the heat sink 1915, so that heat generated from the heating element can be stably discharged to the outside through the heat sink 1915. In addition, by allowing the air cooled by the heat sink 1915 to be discharged back to the indoor space, the flow resistance of the air passing through the auxiliary cooling passage 1690 may be reduced.

In this case, the heat dissipation fins 1915b provided in the heat sink 1915 are preferably disposed to have a surface parallel to the flow direction of the fluid in the auxiliary cooling passage 1690.

In the case of the embodiment shown in FIG. 18, the auxiliary cooling passage 1690 is formed in a form that covers only a part of the heat sink 1915 provided in the control box 1900, and the air discharged from the auxiliary cooling passage 1690 is indoors. It is configured to diffuse inside the case without being discharged to the side.

This structure allows the cooled air to diffuse around the control box 1900, and has an advantage of having less cooling effect than the embodiment of FIG. 18, but relatively less consumption of the cooled air. Because the discharge resistance of the cooled air is large, the inflow flow rate of the cooled air may be relatively lower than in the previous embodiment.

In the case of the embodiment of FIG. 17, a communication hole 1860 may be provided in the drain pan 1800 so that the cooled air discharged from the auxiliary cooling passage 1690 can be diffused into the lower first accommodation space.

The air discharged to the communication hole 1860 provided in the drain pan 1800 is mixed with the outside air of the second receiving space, passed through the evaporator, and then discharged. This structure has the effect of improving the cooling effect of the evaporator.

In the case of the embodiment shown in FIG. 19, similarly to the embodiment of FIG. 18, the auxiliary cooling passage 1690 covers only a part of the heat sink 1915, but the air cooled the heat sink 1915 goes outside the housing. It is a form having an auxiliary discharge port 1090 that can be discharged.

20 is a perspective view showing a state in which a control box is installed in a drain pan according to another embodiment of the present invention.

As shown, the drain pan 1800 has a substantially rectangular shape corresponding to the formation of the cross section of the accommodation space, and the accommodation space formed between the front housing 1100a and the rear housing 1100b is divided up and down. .

FIG. 20 shows that the auxiliary cooling passage 1690 is formed by combining a portion 1692 integrally formed with the second blowing unit 1600 and a portion 1694 integrally formed with the front housing.

As described above with reference to the drawings illustrated for the present invention, the present invention is not limited by the embodiments and drawings disclosed in the present specification, and various by a person skilled in the art within the scope of the technical idea of the present invention. It is obvious that transformation can be made. In addition, although not explicitly described and described the effects of the configuration of the present invention while describing the embodiments of the present invention, it is natural that the predictable effects of the configuration should also be recognized.

1000: mobile air conditioner 1090: auxiliary discharge port
1100: housing 1100a: front housing
1100b: rear housing 1130: lower inlet
1130g: lower suction port grill 1130f: lower suction port filter
1135: outdoor discharge port 1140: upper suction port
1140a: main suction port 1140b: auxiliary suction port
1140c: vane 1140f: upper inlet filter
1140g: upper suction port grill 1145: indoor discharge port
1150: exhaust pipe 1200: compressor
1300: outdoor heat exchanger 1400: first blowing unit
1410: orifice 1420: blower fan
1430: blower motor 1440: euro case
1500: indoor heat exchanger 1550: discharge door
1600: second blowing unit 1690: auxiliary cooling passage
1700: base plate 1800: drain pan
1810: heat sink receiving hole 1812: third opening
1814: first opening 1816: second opening
1820: floor compartment rib 1830: floor condensation water hole
1840: guide surface 1842: fitting projection
1845: holder 1852: first base
1854: 2nd Base 1860: Communication Ball
1900: control box 1910: printed circuit board
1912: heating element 1915: heat sink
1915a: conductive plate 1915b: heat dissipation fin
1920: frame 1922: first rib
1924: second rib 1926: cable guide
1930: first casing 1940: second casing
1942: fitting groove

Claims (26)

delete delete delete delete delete delete delete delete delete delete delete delete delete A housing forming the exterior;
A drain pan that vertically divides the accommodation space provided inside the housing into a first accommodation space below and a second accommodation space above;
An outdoor heat exchanger installed in the first accommodation space;
A first blowing unit installed adjacent to the outdoor heat exchanger in the first accommodation space;
An indoor heat exchanger installed in the second accommodation space;
A second blowing unit installed adjacent to the indoor heat exchanger in the second accommodation space;
A control box mounted on the drain pan;
A heat sink provided in the control box; And
And an auxiliary cooling passage connected to the second blowing unit and passing through the indoor heat exchanger to guide cooled air to the heat sink.
The method of claim 14,
The auxiliary cooling passage accommodates the heat sink and extends to the inner surface of the housing,
The housing is a mobile air conditioner having an auxiliary discharge port through which air supplied to the auxiliary cooling channel is discharged to the outside of the housing.
The method of claim 14,
The auxiliary cooling flow path is a mobile air conditioner that is formed to accommodate a part of the heat sink.
delete The method of claim 16,
The heat sink includes a plurality of radiating fins, and the radiating fins are mobile air conditioners in which a flow surface and a surface of the auxiliary cooling channel are arranged in parallel.
The method of claim 14,
The drain pan is
A mobile air conditioner having a communication hole through which the air discharged from the auxiliary cooling passage can be introduced into the first accommodation space.
A housing forming the exterior;
A drain pan that vertically divides the accommodation space provided inside the housing into a first accommodation space below and a second accommodation space above;
An outdoor heat exchanger installed in the first accommodation space;
A first blowing unit installed adjacent to the outdoor heat exchanger in the first accommodation space;
An indoor heat exchanger installed in the second accommodation space;
A second blowing unit installed adjacent to the indoor heat exchanger in the second accommodation space;
A control box installed in the second accommodation space;
A heat sink provided in the control box; And
And an auxiliary cooling passage connected to the discharge passage of the second blowing unit, passing through the indoor heat exchanger, and guiding the cooled air to the heat sink.
The method of claim 20,
The auxiliary cooling flow path is a mobile air conditioner integrally formed in the discharge flow path of the second blowing unit.
The method of claim 20,
The auxiliary cooling passage is a mobile air conditioner including a portion integrally formed in the second blowing unit and a portion integrally formed in the housing. The method of claim 20,
The drain pan is
A mobile air conditioner having a communication hole through which the air discharged from the auxiliary cooling passage can be introduced into the first accommodation space.
The method of claim 23,
A mobile air conditioner through which the air discharged through the communication hole passes through the outdoor heat exchanger.
The method of claim 20,
The auxiliary cooling flow path is a mobile air conditioner formed by branching from the discharge flow path of the second blowing unit.
The method of claim 20,
The heat sink is a mobile air conditioner disposed above the control box.

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