CN209926470U - Air treatment device - Google Patents

Abstract

An air treatment device is helpful for avoiding the damage of elements of an electric part caused by dew condensation water at a cooling part for cooling the electric part. The utility model discloses an air treatment device includes: an electric part having a power element; and a cooling device located in a region of the electric part, the cooling device having a refrigerant pipe and a heat conduction portion in contact with the power element, and cooling the power element via the heat conduction portion by a refrigerant flowing through the refrigerant pipe, and further including a cover attached to at least one of the electric part and the cooling part and covering a portion of the cooling part other than a side in contact with the power element, a heat insulating layer being provided between the cover and the cooling part.

Description

Air treatment device

Technical Field

The present invention relates to an air treatment apparatus, and more particularly to an air treatment apparatus for cooling a power element of an electric part by a refrigerant flowing through a refrigerant pipe.

Background

Conventionally, there is an air treatment apparatus in which an electric part having a power element is not provided in an electric component box, but the electric part is directly provided in a housing of the air treatment apparatus, and a cooling part having a refrigerant pipe and a heat conduction part in contact with the power element is provided in a region of the electric part, the cooling part cooling the power element via the heat conduction part by a refrigerant flowing through the refrigerant pipe.

However, in the air treatment device, dew condensation water may be generated in a portion of the cooling unit other than the side in contact with the power element due to the states of the temperature of the refrigerant in the refrigerant pipe and the outside air temperature. On the other hand, if dew condensation water is generated in a portion of the cooling unit other than the side in contact with the power element, the dew condensation water may drip from the cooling unit onto some of the non-waterproof elements of the electric unit or may flow down to some of the non-waterproof elements of the electric unit along the cooling unit due to vibration or the like generated during operation of the air treatment apparatus, thereby causing damage or malfunction of the non-waterproof elements.

SUMMERY OF THE UTILITY MODEL

The present invention has been made to solve the above problems, and an object of the present invention is to provide an air treatment apparatus which helps to prevent elements of an electric part from being damaged or malfunctioning due to dew condensation water in a cooling part that cools the electric part.

In order to achieve the above object, the present invention provides an air treatment device, including: an electric part having a power element; and a cooling device located in a region of the electric part, the cooling device including a cooling part that has a refrigerant pipe and a heat conduction part that is in contact with the power element, and cools the power element via the heat conduction part by a refrigerant flowing through the refrigerant pipe, and the cooling device further including a cover that is attached to at least one of the electric part and the cooling part, and that covers a portion of the cooling part other than a side in contact with the power element, and a heat insulating layer is provided between the cover and the cooling part.

According to the air treatment device of the present invention, the cooling device further includes a cover which is attached to at least one of the electric part and the cooling part and covers a portion of the cooling part other than a side in contact with the power element, so that even if dew is generated in the portion of the cooling part other than the side in contact with the power element due to the state of the temperature of the refrigerant in the refrigerant pipe and the outside air temperature, the cover can prevent the dew from dropping or flowing to some elements of the electric part due to vibration or the like generated when the air treatment device is operated and causing damage or malfunction of the elements; further, since the heat insulating layer is provided between the cover and the cooling unit, even if dew condensation water is generated in a portion of the cooling unit other than the side in contact with the power element due to the temperature of the refrigerant in the refrigerant pipe and the temperature of the outside air, dew condensation water is less likely to be generated in the cover, which contributes to preventing damage or malfunction of some elements of the electric part due to the dew condensation water generated in the cover dropping or flowing down to the elements.

In the air treatment apparatus of the present invention, it is preferable that the heat insulating layer abuts against the cooling portion.

According to the present invention, in the cooling portion, dew condensation water is not easily generated in the portion abutting against the heat insulating layer, that is, the portion of the cooling portion in which dew condensation water is generated is reduced, and therefore, it is more helpful to avoid damage or malfunction of the element of the electric portion due to dew condensation water in the cooling portion that cools the electric portion.

In the air treatment apparatus according to the present invention, it is preferable that a flow passage for guiding dew condensation water to the outside of the electric part is formed between the cover and/or the heat insulating layer and the cooling part.

According to the present invention, even if dew condensation water is generated between the cooling unit and the outer cover and/or the heat insulating layer, the dew condensation water flows out of the electric unit through the flow passage, and therefore, it is possible to reliably prevent the elements of the electric unit from being damaged or malfunctioning due to the dew condensation water in the cooling unit that cools the electric unit.

Furthermore, in the air treatment apparatus of the present invention, it is preferable that the electrical part includes a substrate on which the power element is mounted, the substrate extends in a vertical direction, the heat conduction part is a refrigerant jacket in contact with the power element, the outer cover and/or the heat insulating layer is formed with a flow passage extending in the vertical direction between the refrigerant jacket, and the refrigerant pipe passes through the refrigerant jacket, and a part of the refrigerant pipe extends to the outside of the substrate in the vertical direction.

According to the utility model discloses an air treatment device, even produce the condensation water between refrigerant cover and dustcoat and/or insulating layer, the condensation water also can flow to outside the base plate reliably via the runner under the effect of gravity, and in particular, the condensation water can also flow to outside the base plate under the condition that does not influence on every side along the refrigerant piping, consequently, helps avoiding the component of electric portion to damage or the malfunction because of carrying out the condensation water of refrigerated cooling portion department to electric portion more reliably.

In the air treatment apparatus of the present invention, it is preferable that the refrigerant pipe includes: two linear pipe sections, which are parallel to each other; and a U-shaped pipe section connecting ends of the two linear pipe sections, the housing comprising: a first cover portion covering the two linear tube segments; and the second outer cover part is sleeved on and covers the U-shaped pipe section.

According to the utility model discloses an air treatment device, the dustcoat covers two sharp pipeline sections and U-shaped pipeline section simultaneously, consequently, compares with the condition that the dustcoat only covers two sharp pipeline sections or U-shaped pipeline section, can avoid the component of electric portion to damage or the malfunction because of carrying out the dew condensation water of refrigerated cooling portion department to electric portion reliably.

Further, in the air treatment apparatus of the present invention, it is preferable that the electric part includes a base plate on which the power element is mounted, the first cover part and the second cover part are formed separately, the second cover part includes a first part and a second part which are spliced with each other, the first part covers the U-shaped pipe section from a side of the U-shaped pipe section opposite to the base plate, and the second part covers the U-shaped pipe section from a side of the U-shaped pipe section close to the base plate.

According to the utility model discloses an air treatment device, when avoiding the component of electric portion to damage or the malfunction because of carrying out the dew condensation water of refrigerated cooling portion department to electric portion, conveniently installs and removes the dustcoat easily.

In the air treatment apparatus of the present invention, it is preferable that the heat insulating layer is formed of a moisture absorbing material layer.

According to the present invention, even if dew condensation water is generated between the cooling unit and the outer cover and/or the heat insulating layer, the dew condensation water can be partially or entirely absorbed by the heat insulating layer, and therefore, the air treatment apparatus can reliably prevent the elements of the electric unit from being damaged or malfunctioning due to dew condensation water in the cooling unit that cools the electric unit.

In the air treatment apparatus of the present invention, it is preferable that the moisture absorbing material layer is formed of a single layer or a composite layer.

In the air treatment apparatus of the present invention, it is preferable that a heating portion is provided in the housing.

According to the present invention, even if dew condensation water is generated between the cooling unit and the outer cover and/or the heat insulating layer, the dew condensation water can be evaporated by the heat generated by the heating unit, and therefore, the air treatment apparatus can reliably prevent the element of the electric unit from being damaged or malfunctioning due to the dew condensation water in the cooling unit that cools the electric unit.

Further, in the air treatment device of the present invention, it is preferable that the cover is made of a flame retardant material.

According to the utility model discloses an air treatment device, even ambient temperature around the base plate is higher, perhaps the component on the base plate produces electric leakage etc. the dustcoat can not burn yet, can improve the security.

In the air treatment apparatus of the present invention, it is preferable that the air treatment apparatus is an outdoor unit of an air conditioner.

(effects of utility model)

According to the present invention, the cooling device further includes a cover which is attached to at least one of the electric part and the cooling part and covers a portion of the cooling part other than a side in contact with the power element, so that even if dew condensation water is generated in the cooling part other than the side in contact with the power element due to the state of the temperature of the refrigerant in the refrigerant pipe and the outside air temperature, the cover can prevent the dew condensation water from dropping or flowing to some elements of the electric part due to vibration or the like generated when the air treatment device is operated and causing damage or malfunction of the elements; further, since the heat insulating layer is provided between the cover and the cooling unit, even if dew condensation water is generated in a portion of the cooling unit other than the side in contact with the power element due to the temperature of the refrigerant in the refrigerant pipe and the temperature of the outside air, dew condensation water is less likely to be generated in the cover, which contributes to preventing damage or malfunction of some elements of the electric part due to the dew condensation water generated in the cover dropping or flowing down to the elements.

Drawings

Fig. 1 is a perspective view schematically showing an air treatment apparatus according to an embodiment of the present invention, in which a part of a housing is omitted.

Fig. 2 is a partially enlarged view of the vicinity of the electric part in fig. 1.

Fig. 3 is a cross-sectional view schematically showing an electric part, a cooling part, and a housing in the air treatment device according to the embodiment of the present invention, in which the electric part is shown by a dotted line.

Fig. 4 is a partial perspective view schematically showing the vicinity of an electric part of an air treatment device according to an embodiment of the present invention.

Fig. 5 is a schematic perspective view showing an electric part, a cooling part, and a cover of the air treatment device according to the embodiment of the present invention.

Fig. 6 is a schematic perspective view showing the cooling unit and the cover of the air treatment device according to the embodiment of the present invention in a pulled-out manner.

Fig. 7 is a schematic partial perspective view showing the cooling unit and the cover of the air treatment device according to the embodiment of the present invention in a pulled-out manner.

Fig. 8 is a schematic perspective view showing a cooling unit and a cover of an air treatment device according to a modification of the present invention in a pulled-out manner.

Fig. 9 is a schematic partial perspective view showing a cooling unit and a cover of an air treatment device according to another modification of the present invention in a pulled-out manner.

(symbol description)

1 air treatment device

10 electric part

11 substrate

12 power element

13 support plate

20 cooling part

21 refrigerant pipe

211a, 211b straight line segments

212U-shaped pipe section

22 heat conducting part

221 seat part

222 cover part

223 screw

30 outer cover

31 first housing part

311 cover plate

312a, 312b side plate

312a1, 312b1 first latch

312a2, 312b2 second latch

313 bottom plate

3131a first through hole

3131b second through hole

32 second housing part

321 first part

3211 baseboard

3212 side plate

32121 fastener part

322 second part

3221 bottom plate

3222 side plate

32211 protrusion

32221 fastening part

40 insulating layer

50 heating part

LD flow passage

TQ1 mesa shaped projection

TQ2 mesa shaped projection

FS fan

YS compressor

WK outer casing

S1 fan chamber

S2 mechanical chamber

Detailed Description

An air treatment apparatus according to an embodiment of the present invention will be described with reference to fig. 1 to 7, in which fig. 1 is a perspective view schematically showing an air treatment apparatus according to an embodiment of the present invention, in which a part of a housing is omitted, fig. 2 is a partial enlarged view of the vicinity of an electric part in fig. 1, fig. 3 is a sectional view schematically showing an electric part, a cooling part and a housing in an air treatment apparatus according to an embodiment of the present invention, in which the electric part is shown by a dotted line, fig. 4 is a partial perspective view schematically showing the vicinity of an electric part in an air treatment apparatus according to an embodiment of the present invention, fig. 5 is a schematic perspective view showing the electric part, the cooling part and the housing in an air treatment apparatus according to an embodiment of the present invention, fig. 6 is a schematic perspective view showing the cooling part and the housing in an air treatment apparatus according to an embodiment of the present invention, fig. 7 is a schematic partial perspective view showing the cooling unit and the cover of the air treatment device according to the embodiment of the present invention in a pulled-out manner.

Here, for convenience of explanation, three directions orthogonal to each other are set as an X direction, a Y direction, and a Z direction, and one side in the X direction is set as X1, the other side in the X direction is set as X2, one side in the Y direction is set as Y1, the other side in the Y direction is set as Y2, one side in the Z direction is set as Z1, the other side in the Z direction is set as Z2, and the Z direction is assumed to coincide with the vertical direction in actual use.

As shown in fig. 1, the air treatment device 1 of the present embodiment is an air conditioning outdoor unit, and is connected to an air conditioning indoor unit, not shown, via a gas refrigerant pipe and a liquid refrigerant pipe, not shown, to form a refrigerant circuit.

The air treatment device 1 further includes a casing WK, the inside of which is partitioned by a partition into a fan chamber S1 on the X1 direction side and a machine chamber S2 on the X2 direction side, wherein (at least a part of) a fan FS and a heat exchanger (not shown) are provided in the fan chamber S1, (at least a part of) the electric unit 10, the cooling unit 20, the cover 30, and the heat insulating layer 40 described below are provided on the Z1 direction side (i.e., on the upper side in actual use) in the machine chamber S2, and (at least a part of) a compressor YS is provided on the Z2 direction side (i.e., on the lower side in actual use).

Since the structure of the fan FS and the like in the fan chamber S1 and the structure of the compressor YS and the like on the Z2 direction side in the machine chamber S2 are not important in the present invention, the detailed description thereof is omitted, and the electric part 10, the cooling part 20, the cover 30, and the heat insulating layer 40 on the Z1 direction side in the machine chamber S2 will be mainly described below.

As shown in fig. 2 to 5, the air treatment device 1 includes an electric part 10 and a cooling device, wherein the electric part 10 includes a power element 12, the cooling device is located in a region of the electric part 10 and includes a cooling part 20, the cooling part 20 includes a refrigerant pipe 21 (constituting a part of the refrigerant circuit) and a heat conduction part 22 in contact with the power element 12, and the power element 12 is cooled by a refrigerant flowing through the refrigerant pipe 21 via the heat conduction part 22; the cooling device further includes a cover 30, the cover 30 being attached to the cooling unit 20 and covering a portion of the cooling unit 20 except a side in contact with the power element 12, and a heat insulating layer 40 being provided between the cover 30 and the heat conducting unit 22.

Here, as shown in fig. 5, the electric part 10 includes a substrate 11, the substrate 11 is provided to extend in the Z direction (i.e., a vertical direction in actual use), various electric elements such as a diode, a capacitor, a reactor, and a chip are mounted on the substrate 11, and the power element 12 may be any one or more of the above electric elements. As shown in fig. 5, the electric part 10 further includes a support plate 13, and the support plate 13 is fixed to the partition plate that partitions the interior of the casing WK into the fan chamber S1 and the machine chamber S2, and supports the substrate 11.

As shown in fig. 3, the cooling unit 20 includes a refrigerant pipe 21 and a refrigerant jacket as a heat transfer unit 22 that sandwiches the refrigerant pipe 21 and contacts the power element 12, a flow path LD for guiding dew condensation water to the outside of the substrate 11 is formed between the cover 30, the heat insulating layer 40, and the refrigerant jacket, and the refrigerant pipe 21 penetrates the refrigerant jacket and partially extends to the outside of the substrate 11 in the Z direction.

Specifically, as shown in fig. 3, the refrigerant pipe 21 includes: two linear sections 211a, 211b, the two linear sections 211a, 211b extending parallel to each other in the Z direction; and a U-shaped pipe section 212, the U-shaped pipe section 212 connecting the ends of the two linear pipe sections 211a, 211b on the Z1 direction side and being provided at a distance from the base plate 11, and the ends of the two linear pipe sections 211a, 211b on the Z2 direction side extending outside the base plate 11 and being provided at a distance from the base plate 11. As shown in fig. 3, the refrigerant jacket includes a seat portion 221 that performs a heat transfer function and a cover portion 222 that performs a fixing function, the seat portion 221 is in contact with the power element 12 and is in contact with the two linear tube segments 211a and 211b of the refrigerant tube 21 from the Y2 direction side, the cover portion 222 covers the refrigerant tube 21 from the Y1 direction side (in the illustrated example, only the two linear tube segments 211a and 211b of the refrigerant tube 21 are covered and the U-shaped tube segment 212 is not covered) and sandwiches the refrigerant tube 21 together with the seat portion 221, the cover portion 222 is fixed to the seat portion 221 by, for example, screws 223 (see fig. 5) or the like, and heat of the power element 12 can be transferred to the refrigerant in the refrigerant tube 21 via the refrigerant jacket, thereby cooling the power element 12. As shown in fig. 3, a flow path LD extending in the Z direction is formed between the cover 222 of the outer cover 30, the heat insulating layer 40, and the refrigerant jacket (specifically, the cover 222).

Further, as shown in fig. 5 to 7, the housing 30 includes: a first cover portion 31, the first cover portion 31 covering the two linear tube sections 211a, 211b of the refrigerant tube 21; and a second cover portion 32, the second cover portion 32 covering the U-shaped pipe section 212 of the refrigerant pipe 21. Specifically, as shown in fig. 3 to 7, the first cover part 31 and the second cover part 32 are formed separately; the first cover part 31 has a cover plate 311 whose thickness direction substantially coincides with the Y direction, side plates 312a, 312b bent from both ends of the cover plate 311 in the X direction toward the Y2 direction, and a bottom plate 313 bent from an end of the cover plate 311 in the Z2 direction toward the Y2 direction, the side plates 312a, 312b are respectively provided with first click portions 312a1, 312b1 engageable with a seat part 221 of the refrigerant jacket and second click portions 312a2, 312b2 engageable with the second cover part 32 (the first cover part 31 can be detached by elastically deforming the first click portions 312a1, 312b1 and the second click portions 312a2, 312b 2), and the bottom plate 313 is provided with a first through hole 3131a and a second through hole 3131b through which the two linear pipe segments 211a, 211b of the refrigerant pipe 21 respectively pass; the second cover portion 32 includes a first portion 321 and a second portion 322 joined to each other by an engagement structure, the first portion 321 covering the U-shaped pipe section 212 of the refrigerant pipe 21 from the side (i.e., the Y1 direction side) opposite to the base plate 11 of the U-shaped pipe section 212 of the refrigerant pipe 21, and having a flat bottom plate 3211 and side plates 3212 rising from the periphery of the bottom plate 3211, and, the side plate 3212 is provided with a catch portion 32121, the second portion 322 covers the U-shaped pipe 212 of the refrigerant pipe 21 from the side of the U-shaped pipe 212 of the refrigerant pipe 21 closer to the base plate 11 (i.e., the side in the Y2 direction), and has a bottom plate 3221 in a flat plate shape and a side plate 3222 standing from the periphery of the bottom plate 3221, and grid-like protrusions 32211 snapped into the inner circumference of the U-shaped tube section 212 to position and secure the second portion 322 with respect to the U-shaped tube section 212 are provided on the bottom plate 3221, the side plate 3222 is provided with a locking portion 32221 that can be engaged with the locking portion 32121. Also, it is preferable that outer cover 30 be made of a flame retardant material (to the extent of UL94-V0 or more).

As shown in fig. 3, the heat insulating layer 40 is provided in the cover 30 and abuts against the cooling unit 20 (specifically, the cover 222 of the refrigerant jacket). Specifically, the heat insulating layer 40 is provided on the first cover portion 31 (the cover plate 311 of the first cover portion 31 in the illustrated example) and the second cover portion 32 of the cover 30.

Here, the heat insulating layer 40 may be formed of a single layer or a composite layer. Preferably, the heat insulating layer 40 is formed of a moisture absorbing material layer.

(main effect of the present embodiment)

According to the air treatment device 1 of the present embodiment, since the cooling device further includes the cover 30, the cover 30 is attached to the cooling unit 20 and covers the portion of the cooling unit 20 other than the side in contact with the power element 12, even if dew condensation water is generated in the portion of the cooling unit 20 other than the side in contact with the power element 12 due to the state of the temperature of the refrigerant in the refrigerant pipe 21 and the outside air temperature, it is possible to prevent the dew condensation water from dropping or flowing to some elements of the electric part 10 (for example, elements located on both right and left sides of the cover 30 shown in fig. 2) due to vibration or the like generated when the air treatment device 1 operates and causing damage or malfunction of these elements by the cover 30; further, since the heat insulating layer 40 is provided between the cover 30 and the cooling unit 20, even if dew condensation water is generated in a portion of the cooling unit 20 other than the side in contact with the power element 12 due to the temperature of the refrigerant in the refrigerant pipe 21 and the outside air temperature, dew condensation water is less likely to be generated in the cover 30, and it is helpful to prevent damage or malfunction of some elements of the electric unit due to the dew condensation water generated in the cover 30 dropping or flowing down to the elements.

The present invention has been described above by way of example with reference to the accompanying drawings, and it is to be understood that the specific implementations of the present invention are not limited to the above-described embodiments.

For example, in the above-described embodiment, the air processing apparatus according to the embodiment of the present invention is described by taking an air conditioner outdoor unit as an example, but the present invention is not limited to this.

In the above embodiment, the cover 30 is attached to the cooling unit 20, but the present invention is not limited to this, and the cover 30 may be attached to the electric unit 10 (for example, an engagement hole is provided in the substrate 11, and a hook that engages with the engagement hole is provided in the cover 30), or a part of the cover 30 may be attached to the electric unit 10 and another part of the cover 30 may be attached to the cooling unit 20.

In the above embodiment, as shown in fig. 8, the heating section 50 may be provided in the cover 30, for example, a heating belt may be provided in contact with the inner surface of the cover 30 and in contact with the cooling section 20. Thus, even if dew condensation water is generated between the cooling unit and the cover and/or the heat insulating layer, the dew condensation water can be evaporated by the heat generated by the heating unit, and thus, it is possible to reliably avoid damage or malfunction of the element of the electric unit due to dew condensation water in the cooling unit that cools the electric unit.

In the above embodiment, the substrate 11 extends in the Z direction, but the present invention is not limited to this, and the direction of the substrate 11 may be appropriately changed as needed.

In the above embodiment, the heat insulating layer 40 is provided only on a part of the inner surface of the outer cover 30, but the present invention is not limited thereto, and the heat insulating layer 40 may be provided on the entire inner surface of the outer cover 30, which further helps to prevent damage or malfunction of some components of the electric part due to dew condensation water generated on the outer cover 30 dropping or flowing down to the components.

In the above embodiment, the refrigerant pipe 21 includes the two linear pipe sections 211a and 211b and the U-shaped pipe section 212, but the present invention is not limited to this, and the specific form of the refrigerant pipe 21 may be appropriately changed as needed.

In the above embodiment, the heat insulating layer 40 is in contact with the cooling unit 20, but the present invention is not limited thereto, and the heat insulating layer 40 may not be in contact with the cooling unit 20.

Further, in the above embodiment, in the second cover part 32, the first part 321 has the flat plate-shaped bottom plate 3211, the second part 322 has the flat plate-shaped bottom plate 3221, and the grid-shaped protrusions 32211 are provided on the bottom plate 3221, but the present invention is not limited to this, and for example, as shown in fig. 9, a mesa-shaped protrusion TQ1 protruding toward the U-shaped pipe section 212 may be formed at the center of the bottom plate of the first part 321, and a mesa-shaped protrusion TQ2 protruding toward the U-shaped pipe section 212 may be formed at the center of the bottom plate of the second part 322, and the positioning and fixing of the second cover part 32 with respect to the U-shaped pipe section 212 may be realized by fitting the two mesa-shaped protrusions TQ1 and TQ2 into the inner periphery of the U-shaped pipe section 212.

Further, in the above-described embodiment, as shown in fig. 5, the refrigerant jacket does not cover the U-shaped pipe section 212, but is not limited thereto, and the refrigerant jacket may be provided to cover the U-shaped pipe section 212 as needed, in which case the second portion 322 of the second cover part 32 may be omitted and the first portion 321 of the second cover part 32 may be formed integrally with the first cover part 31.

Further, in the above embodiment, the refrigerant jacket includes the seat portion 221 and the lid portion 222 that are connected together by, for example, screws, but is not limited thereto, and the refrigerant jacket may be integrally formed. In addition, in some cases, the cover 222 may be omitted as long as the refrigerant pipe 21 can be fixed to the seat 221.

In the above embodiment, the cover 30 includes the first cover portion 31 and the second cover portion 32, but the present invention is not limited to this, and the second cover portion 32 may be omitted, for example.

It should be understood that the present invention can freely combine the embodiments within its scope, or can suitably modify or omit the embodiments.

Claims (11)

1. An air treatment device (1) comprising: an electric unit (10) having a power element (12); and a cooling device located in the area of the electrical part (10), the cooling device having a cooling part (20), the cooling part (20) having a refrigerant pipe (21) and a heat conduction part (22) in contact with the power element (12), and the power element (12) being cooled by the refrigerant flowing through the refrigerant pipe (21) via the heat conduction part (22), characterized in that,

the cooling device further comprises a housing (30),

the cover (30) is attached to at least one of the electric part (10) and the cooling part (20) and covers a portion of the cooling part (20) other than a side in contact with the power element (12),

a heat insulating layer (40) is provided between the outer cover (30) and the cooling section (20).

2. The air treatment device of claim 1,

the heat insulating layer (40) is in contact with the cooling section (20).

3. The air treatment device of claim 1,

a flow passage (LD) for guiding dew condensation water to the outside of the electric unit is formed between the cover (30) and/or the heat insulating layer (40) and the cooling unit (20).

4. An air treatment unit as defined in claim 3,

the electric part (10) includes a substrate (11) on which the power element (12) is mounted,

the substrate (11) is extended along the vertical direction,

the heat conducting portion (22) is a refrigerant jacket in contact with the power element (12),

the flow passage extending in the vertical direction is formed between the cover (30) and/or the heat insulating layer (40) and the refrigerant jacket,

the refrigerant pipe (21) penetrates the refrigerant jacket, and a part of the refrigerant pipe extends out of the substrate (11) in the vertical direction.

5. The air treatment device of claim 1,

the refrigerant pipe (21) includes:

two linear pipe sections, which are parallel to each other; and

a U-shaped pipe section connecting the ends of the two linear pipe sections,

the housing (30) includes:

a first cover part (31) covering the two linear tube sections; and

a second cover portion (32) sleeved over the U-shaped tube section.

6. The air treatment device of claim 5,

the electric part (10) includes a substrate (11) on which the power element (12) is mounted,

the first cover part (31) and the second cover part (32) are formed separately,

the second cover part (32) comprises a first part (321) and a second part (322) which are spliced with each other,

the first portion (321) covers the U-shaped pipe section from the side of the U-shaped pipe section opposite to the base plate (11),

the second part (322) covers the U-shaped pipe section from the side of the U-shaped pipe section close to the base plate (11).

7. The air treatment device of claim 1,

the heat insulation layer is composed of a moisture absorption material layer.

8. The air treatment device of claim 7,

the moisture-absorbing material layer is formed of a single layer or a composite layer.

9. The air treatment device of claim 1,

a heating portion is provided in the housing.

10. The air treatment device of claim 1,

the housing is made of a fire retardant material.

11. The air treatment device of claim 1,

the air treatment device is an air conditioner outdoor unit.

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