WO2010087481A1

WO2010087481A1 - Air conditioning device

Info

Publication number: WO2010087481A1
Application number: PCT/JP2010/051363
Authority: WO
Inventors: 則博竹仲; 亮藤本
Original assignee: ダイキン工業株式会社
Priority date: 2009-02-02
Filing date: 2010-02-01
Publication date: 2010-08-05
Also published as: JP2010175224A

Abstract

An air conditioning device (10) is provided with: a casing (30); an electric component module (35) provided within the casing (30) and having a first circuit board (54a) on which power elements (56a) are mounted, second circuit boards (54b, 55) on which electric components (56) other than the power elements (56a) are mounted, and a section (60) to be cooled which is joined to the power elements (56a); and a cooling section (37) which cools the section (60) to be cooled. In the electric component module (35), the first circuit board (54a) is provided on the opposite side of the section (60) from the cooling section (37), and the second circuit boards (54b, 55) are arranged above the cooling section (37).

Description

Air conditioner

The present invention relates to an air conditioner that performs a vapor compression refrigeration cycle by circulating a refrigerant.

Conventionally, an air conditioner described in Patent Document 1 is known as an air conditioner that performs a vapor compression refrigeration cycle by circulating a refrigerant. As shown in FIG. 18, the air conditioning apparatus 200 includes an outdoor unit 202. This outdoor unit 202 has a casing 204, and a part of the refrigerant circuit 206 is disposed inside the seeding 204. Specifically, a plurality of electrical components including a compressor 208, a heat exchanger 210, a blower fan 212, and the like, and a power element (not shown) such as an inverter as these control systems are mounted inside the casing 204. An electrical component module (electrical component box) 220 is disposed.

The power element mounted on the electrical component module 220 generates heat when the air conditioner 200 is operated, and becomes high temperature. Therefore, in the air conditioner 200, the refrigerant passage (cooling pipe) 214 constituting a part of the refrigerant circuit 206 is thermally connected to the power element, and the power element is exchanged by heat exchange between the refrigerant in the refrigerant circuit 206 and the power element. Is cooled.

In the outdoor unit 202, the refrigerant passage 214 is disposed in the vicinity of the electrical component module 220 in order to thermally connect the refrigerant passage 214 to the power element. In the refrigerant passage 214, condensation or frost may be generated on the surface of the refrigerant passage 214 depending on the temperature of the refrigerant flowing in the refrigerant passage 214. Therefore, there is a concern that condensation or the like generated on the surface of the refrigerant passage 214 reaches the electric component module 220 through the refrigerant passage 214 and the electric component mounted on the electric component module 220 gets wet and is damaged. .

Japanese Unexamined Patent Publication No. 2008-27441

In view of the above problems, an object of the present invention is to provide an air conditioner in which an electrical component mounted on the electrical component module is hardly wetted even if a refrigerant passage is disposed in the vicinity of the electrical component module.

The present invention includes a refrigerant circuit in which a refrigerant circulates, a casing, a first circuit board that is disposed inside the casing and on which a power element is mounted, and a second circuit board on which an electrical component other than the power element is mounted. And an electrical component module having a cooled portion joined to the power element, and a cooling portion that is thermally connected to the refrigerant of the refrigerant circuit and cools the cooled portion, The first circuit board is disposed on the opposite side of the cooling part with the cooled part interposed therebetween, and the second circuit board is disposed on the upper side of the cooling part. To do.

As described above, even when the electrical component module is disposed inside the casing and the refrigerant passage is disposed in the vicinity of the electrical component module, an air conditioner in which the electrical component mounted on the electrical component module is difficult to get wet is provided. Can do.

Drawing 1 is a figure showing roughly the piping system of the air harmony device concerning this embodiment. FIG. 2 is a perspective view of the outdoor unit. FIG. 3 is a perspective view of the outdoor unit, in which the second front plate is removed. FIG. 4 is a perspective view of the outdoor unit, which shows a state in which the second front plate is removed. FIG. 5 is a plan view of the outdoor unit, in which the second front plate is removed and the top plate is removed. FIG. 6 is a perspective view of the outdoor unit. FIG. 6 is a perspective view showing a state in which the first connection pipe and the second connection pipe are pulled out. FIG. 7A is a partially enlarged perspective view of the upper part of the machine room, and FIG. 7B shows a state where the oil separator is removed from FIG. 7A. FIG. 8 is a side view of the outdoor unit, in which the second front plate, the right side plate, the back side plate and the top plate are removed. FIG. 9 is a perspective view from the back side of the electrical component module provided in the outdoor unit, and this figure shows a state in which the back protective cover is removed. FIG. 10 is a perspective view from the lower front side of the electrical component module. This figure shows the terminal block in the open position. FIG. 11 is a perspective view from above the front side of the electrical component module, and this figure shows the terminal block in the open position. FIG. 12 is a perspective view from above the front side of the electrical component module, and this figure shows the terminal block in the closed position. FIG. 13 is a diagram schematically showing a connection state between the power element mounted on the first substrate portion and the heat transfer plate. FIG. 14A is a plan view schematically showing the flow of outdoor air taken into the outdoor unit, and FIG. 14B is a schematic view showing the flow of outdoor air taken into the outdoor unit. FIG. FIG. 15 is a diagram showing a procedure for disposing the electrical component module in the outdoor unit, and this figure shows a state before the electrical component module with the terminal block in the open position is lowered so as to be inserted into the back side of the refrigerant jacket. FIG. FIG. 16 is a view showing a state in which the electrical component module in the state of FIG. 15 is lowered and fixed in a state where it is disposed on the back side of the refrigerant jacket, and the terminal block is rotated to the closed position. FIG. 17 is a perspective view of an outdoor unit of an air conditioner according to another embodiment, and this drawing shows the arrangement of components inside the outdoor unit. FIG. 18 is a diagram schematically showing a piping system of a conventional air conditioner.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows a piping system of an air conditioner 10 according to the present embodiment. The air conditioner 10 is a heat pump type air conditioner 10 capable of cooling operation and heating operation. As shown in FIG. 1, the air conditioner 10 includes an outdoor unit 11 installed outside and an indoor unit 12 installed indoors. The outdoor unit 11 and the indoor unit 12 are connected via a first connection pipe 13 and a second connection pipe 14. The air conditioner 10 is provided with a refrigerant circuit 18 in which pipes including the

connection pipes

13 and 14 are connected in a closed circuit shape. The refrigerant circuit 18 is mainly provided with an indoor heat exchanger 20, a compressor 23, an oil separator 24, an outdoor heat exchanger 25, an expansion valve 26 that is an expansion mechanism, an accumulator 27, and a four-way switching valve 28. In the refrigerant circuit 18, a refrigerant is circulated to perform a vapor compression refrigeration cycle.

The indoor heat exchanger 20 is a heat exchanger for exchanging heat between the refrigerant and room air, and is provided in the indoor unit 12. As the indoor heat exchanger 20, for example, a cross fin type fin-and-tube heat exchanger or the like can be employed. An indoor fan (not shown) for blowing indoor air to the indoor heat exchanger 20 is provided in the vicinity of the indoor heat exchanger 20.

Compressor 23, oil separator 24, outdoor heat exchanger 25, expansion valve 26, accumulator 27, and four-way switching valve 28 are provided in outdoor unit 11. These are all housed in the casing 30 (see FIGS. 2 to 5).

The compressor 23 has a suction port, a compression mechanism, and a discharge port, compresses the refrigerant sucked from the suction port by the compression mechanism, and discharges it from the discharge port. As the compressor 23, various compressors, such as a scroll compressor, are employable, for example.

The oil separator 24 is for separating the lubricating oil from the mixed fluid of the lubricating oil and the refrigerant discharged from the compressor 23. The separated refrigerant is sent to the four-way switching valve 28, and the lubricating oil is returned to the compressor 23.

The outdoor heat exchanger 25 is for exchanging heat between the refrigerant and outdoor air. As the outdoor heat exchanger 25, for example, a cross fin type fin-and-tube heat exchanger or the like can be employed. In the vicinity of the outdoor heat exchanger 25, an outdoor fan (air blowing means) 31 for blowing (supplying) outdoor air to the outdoor heat exchanger 25 is provided.

The expansion valve 26 is disposed between the outdoor heat exchanger 25 and the indoor heat exchanger 20 in the refrigerant circuit 18, and expands the refrigerant flowing therein to reduce the pressure to a predetermined pressure. As the expansion valve 26, for example, an electronic expansion valve 26 having a variable opening can be employed.

The accumulator 27 is used for gas-liquid separation of the inflowing refrigerant, and is disposed between the suction port of the compressor 23 and the four-way switching valve 28 in the refrigerant circuit 18. The gas refrigerant separated by the accumulator 27 is sucked into the compressor 23.

The four-way switching valve 28 is provided with first to fourth ports. The four-way switching valve 28 includes a first state (state indicated by a solid line in FIG. 1) in which the first port and the third port are communicated with each other and a second port and a fourth port, and the first port and the fourth port. Can be switched to a second state (state indicated by a broken line in FIG. 1) in which the second port and the third port are communicated simultaneously. The first port is connected to the discharge port of the compressor 23 via the oil separator 24, the second port is connected to the suction port of the compressor 23 via the accumulator 27, and the third port is connected to the outdoor It is connected to the heat exchanger 25 and the fourth port is connected to the indoor heat exchanger 20 via the first connection pipe 13. When the air conditioner 10 performs the cooling operation, the four-way switching valve 28 is switched to the first state. When the air conditioner 10 performs the heating operation, the four-way switching valve 28 is switched to the second state.

A refrigerant jacket 37 is joined to the liquid side pipe of the refrigerant circuit 18. The refrigerant jacket 37 is for cooling the heat generating part of the electrical component module 35. In the illustrated example, the liquid side pipe to which the refrigerant jacket 37 is joined is a liquid side pipe between the outdoor heat exchanger 25 and the expansion valve 26 in the refrigerant circuit 18, but the refrigerant to which the refrigerant jacket 37 is joined. The piping is not limited to this. However, considering the cooling capacity, the refrigerant jacket 37 is preferably joined to the liquid side pipe.

In the pipe joined to the refrigerant jacket 37, the refrigerant condensed by the outdoor heat exchanger 25 flows during the cooling operation, and the refrigerant condensed by the indoor heat exchanger 20 and decompressed by the expansion valve 26 flows during the heating operation. . The temperature of these refrigerants varies depending on operating conditions and the like, but is about 40 to 45 ° C. during cooling operation, for example.

The refrigerant jacket 37 is formed in a flat shape, and is configured to be surface-bondable at a predetermined position of the electrical component module 35. The electrical component module 35 is an electrical component assembly for performing operation control of the refrigerant circuit 18, and is provided in the outdoor unit 11. Detailed configurations of the electrical component module 35 and the refrigerant jacket 37 will be described later.

As shown in FIGS. 2 to 5, the outdoor unit 11 includes a bottom plate 30a as a base, a side plate 30b erected on the peripheral edge of the bottom plate 30a, and a top plate 30c provided at the upper end of the side plate 30b. A casing 30 is provided. The side plate 30b of the casing 30 includes a front side plate 130 and a rear side plate 131 that are substantially parallel to each other, and both ends in the width direction of the front side plate 130 and the rear side plate 131 (that is, the left side ends and the right side ends when viewed from the front side). And a pair of side surface plates 132 that connect each other). Furthermore, the front side plate 130 is configured by two front plates (a first front plate 130a and a second front plate 130b) arranged side by side. By the casing 30 configured in this way, the outdoor unit 11 has an approximately rectangular parallelepiped appearance as a whole.

A partition plate 39 that divides the internal space of the casing 30 into two spaces is provided inside the casing 30. The partition plate 39 has a size extending from the lower end portion to the upper end portion of the internal space of the casing 30, and is provided so as to stand on the bottom plate 30 a of the casing 30. By this partition plate 39, the internal space of the casing 30 accommodates the heat exchange chamber 40 in which the outdoor heat exchanger 25 and the outdoor fan 31 are accommodated, the compressor 23, the oil separator 24, the electrical component module 35, and the like. The machine room 41 is partitioned.

The heat exchange chamber 40 is located on the left side when the casing 30 is viewed from the front, and the machine room 41 is positioned on the right side when the casing 30 is viewed from the front. Of the two

front plates

130 a and 130 b constituting the front side plate 130 of the casing 30, the first front plate 130 a is disposed on the front surface of the heat exchange chamber 40, and the second front plate 130 b is disposed on the front surface of the machine room 41. Has been placed. The first front plate 130 a has an opening for blowing outdoor air taken into the heat exchange chamber 40 to the outside of the casing 30.

The second front plate 130b has an L-shape when viewed from the plane, with the right end bent to the back side (see FIG. 5). A notch 135 is formed at the lower right end of the second front plate 130b. Specifically, the right lower end portion of the second front plate 130b is cut out from the substantially central portion in the width direction on the front surface side to the rear end portion of the bent portion. A cover member 150 is disposed so as to close the notch 135.

The cover member 150 is a plate-like member that is bent in an L shape when viewed from above, and is provided to stand on the bottom plate 30a. A part of the cover member 150 (the lid portion 151) is configured to be removable on the front side and the right side. By removing the lid 151, a pipe lead-out hole (see FIG. 6) through which the pipe can be drawn out from the inside of the casing 30 is opened. The pipe lead-out hole communicates the inside and the outside of the casing 30 and is used for drawing out the first connection pipe 13 and the second connection pipe 14 from the inside of the casing 30. The front-side lid 151 and the right-side lid 151 are drawn out from the outdoor unit 11 (casing 30) of the first connection pipe 13 and the second connection pipe 14 according to the installation status of the outdoor unit 11. Selectively removed.

For example, when the outdoor unit 11 is installed and the first connection pipe 13 and the second connection pipe 14 are pulled out from the side surface of the outdoor unit 11, as shown in FIG. The lid 151 is removed, and the first connection pipe 13 and the second connection pipe 14 are drawn out through the opened pipe lead-out hole. In the present embodiment, the first connection pipe 13 and the second connection pipe drawn through the pipe drawing hole are bundled with a tape or the like.

As described above, when the first connection pipe 13 and the second connection pipe 14 are disposed, the gap is generated between the pipe lead-out hole peripheral portion of the cover member 150 and the first connection pipe 13 and the second connection pipe 14. The gap is filled with a putty or a special member.

Also, the cover member 150 is provided with an opening 152. The opening 152 is provided above each lid 151 in the cover member 150 and communicates the inside and the outside of the casing 30. Each opening 152 is long in the horizontal direction. From the opening 152, outdoor air flows into the machine chamber 41 when the air conditioner 10 is operated.

When the casing 30 is viewed from the front, the right side plate 132 (right plate 132a) constitutes the right side of the casing 30 together with the bent portion of the second front plate 130b, and therefore the left side plate 132 (left plate 132b). Is also formed to have a smaller width (see FIG. 5). A screw hole 133 that is used when fixing the electrical component module 35 at the intermediate height position is provided at the front end portion of the right side plate 132a (see FIG. 15). In the present embodiment, two screw holes 133 are provided at intervals in the vertical direction.

The partition plate 39 has a height from the bottom plate 30a to the top plate 30c, its front end is coupled to the front side plate 130 (specifically, the right end of the first front plate 130a), and the rear end is outdoor heat. It is coupled to the end of the exchanger 25 (the right end in FIG. 5). The partition plate 39 extends from the front end toward the back side of the casing 30 and is curved to the right from the substantially center position in the depth direction of the casing 30 toward the end of the outdoor heat exchanger 25 (see FIG. 5). ). An opening 39 a (see FIG. 7B) that connects the machine room 41 and the heat exchange chamber 40 is provided on the upper part of the partition plate 39.

The opening 39a is long in the vertical direction and is provided at a curved portion on the rear end side of the partition plate 39. This part is a position on the back side of the oil separator 24 arranged in the vicinity of the upper portion of the partition plate 39 when viewed from the front (see FIGS. 7A and 7B). By arranging the oil separator 24 at a position facing the opening 39a of the partition plate 39 in this way, even if rainwater or the like enters the machine room 41 from the heat exchange chamber 40 through the opening 39a, the rainwater or the like Falls on the oil separator 24 and cannot reach the front side of the machine room 41. As will be described later, since the electrical component is disposed on the front side of the machine room 41, the oil separator 24 prevents the electrical component from getting wet with rainwater or the like. In this embodiment, the oil separator 24 is disposed at a position facing the opening 39a. However, the present invention is not limited to this, and other refrigerant circuit components are disposed at a position facing the opening 39a. A member for supporting these refrigerant circuit components may be provided. In addition, a dedicated member for preventing intrusion of rainwater or the like into the front side of the machine room 41 may be separately provided.

At the front end portion of the partition plate 39, a fixing portion 39b for fixing the electrical component module 35 is provided at a predetermined height position corresponding to the screw hole 133 provided at the front end portion of the right side plate 132a ( (See FIG. 15). The fixing portion 39b is a portion that protrudes from the partition plate 39 toward the inside of the machine room 41, and is a substantially triangular prism-like portion that extends vertically in the present embodiment. A screw hole 134 is provided on the front side surface of the fixed portion 39b. Two screw holes 134 are lined up and down.

The outdoor heat exchanger 25 is installed on the bottom plate 30a of the casing 30, and has a size ranging from the lower end portion to the upper end portion of the heat exchange chamber 40. And the outdoor heat exchanger 25 is formed in L shape seeing from the plane, and is arrange | positioned along the back side board 131 and the left side board 132b (refer FIG. 5).

The machine room 41 is formed so as to occupy the whole in the front-rear direction, as shown in FIG. An electrical component module 35 is disposed on the front side of the internal space of the machine room 41. That is, the electrical component module 35 is installed in the vicinity of the front side plate 130 so that the front surface thereof is approximately parallel to the front side plate 130 (specifically, the second front plate 130b) of the casing 30. Therefore, when the second front plate 130b is removed from the outdoor unit 11, the front surface of the electrical component module 35 is exposed on the most front side. Refrigerant circuit components such as a refrigerant pipe and an accumulator 27 are disposed on the back side (rear side) of the electrical component module 35.

The electrical component module 35 is disposed in the middle of the machine room 41 in the height direction, and the upper and lower portions of the electrical component module 35 are spaces as shown in FIG. In this electrical component module 35, one end (left end) in the width direction is coupled to the partition plate 39, while the other end (right end) is coupled to the side plate 30b (right plate 132a) of the casing 30 (see FIG. 16).

As shown in FIG. 9 to FIG. 12, the electrical component module 35 includes a holding member 44, a circuit board 45, a terminal block 46, and a back protective cover 47 which is a protective member. The holding member 44 includes a main member 51 configured to be coupled to the right side plate 132 a and the partition plate 39 of the casing 30, a resin interposed member 52 coupled to the main member 51, and an upper end of the main member 51. And a gripping member (plate member) 53 provided.

The main member 51 is formed by punching a proper portion of a member made of sheet metal and bending it into a predetermined shape. The main member 51 includes a rectangular main surface portion 51a, a side surface portion 51b bent from a side end portion of the main surface portion 51a, and a top surface portion 51c bent from an upper end portion of the main surface portion 51a.

A cut and raised piece 51d (see FIG. 10) is provided at the left end of the main surface portion 51a. The cut-and-raised piece 51 d is a part for connecting the left end portion of the electrical component module 35 to the partition plate 39. Specifically, the cut-and-raised piece 51d is formed by providing a cut from the left end portion of the main surface portion 51a to the left side surface portion (left-side surface portion) 51b and causing a portion surrounded by the cut to the front side. . When the electrical component module 35 is fixed, the cut and raised piece 51d is cut and raised in a shape along the surface provided with the screw hole 134 in the fixing portion 39b of the partition plate 39. The cut-and-raised piece 51d is provided with a through hole 51e. In the present embodiment, the through holes 51e are provided at positions corresponding to the two screw holes 134 arranged on the upper and lower sides provided in the fixing portion 39b of the partition plate 39, respectively. The screw B1 is inserted into the through hole 51e, and the screw B1 is screwed into the screw hole 134 of the fixing portion 39b of the partition plate 39, whereby the left end portion of the electrical component module 35 is coupled to the partition plate 39. (See FIG. 16).

The contacted portion 153 is formed by bending the rear side end portion of the right side surface portion (right side surface portion) 51b of the left and right side surface portions 51b in parallel with the main surface portion 51a toward the outside. Yes. A through hole 153a is provided at a position corresponding to the screw hole 133 at the front end of the right side plate 132a when the electrical component module 35 is fixed to the upper end and the lower end of the contacted portion 153. The through hole 153a is used to connect the right end portion of the electrical component module 35 to the right side plate 132a. Specifically, when the electrical component module 35 is disposed inside the casing 30, the screw B2 is inserted into the through hole 153a, and the screw B2 is screwed into the screw hole 133 provided in the front end portion of the right side plate 132a. Is done. Thereby, the right end part of the electrical component module 35 is coupled to the right side plate 132a of the casing 30 (see FIG. 16).

The intervention member 52 is coupled to the main surface portion 51 a of the main member 51, and suppresses the heat of the circuit board 45 from being transmitted to the main member 51.

The gripping member 53 is a plate-like member whose front end protrudes from the upper end of the main member 51 to the front side along the horizontal plane. The gripping member 53 is provided with a through hole 53a penetrating in the vertical direction at the tip. The through hole 53 a is used when an operator or the like inserts a finger to grip the gripping member 53 when gripping the gripping member 53. The grip member 53 is provided on the left side of the center of the main member 51 when viewed from the front. Further, the leading end portion and the left and right end portions are bent upward to form a rising portion 53b. The strength of the gripping member 53 is improved by the rising portion 53b. On the gripping member 53, a reactor 56c is placed on the rear end side of the through hole 53a.

The circuit board 45 includes a rear substrate 54 (see FIG. 9) disposed on the rear surface side of the main surface portion 51a of the main member 51, and a front substrate 55 disposed on the front surface side of the main surface portion 51a of the main member 51. (See FIGS. 10 to 12). These

substrates

54 and 55 are arranged in the electrical component module 35 so as to be parallel to each other.

The back substrate 54 includes a first substrate portion 54a on which a plurality of electrical components 56 including a power element 56a (see FIG. 13) and an element 56b such as a capacitor other than the power element 56a are mounted, and an element 56b other than the power element 56a. And a second substrate part 54b on which a plurality of electrical components 56 are mounted. Examples of the electrical component 56 mounted on the second substrate unit 54b include a noise filter. The second substrate portion 54b is fixed to the main member 51 so that the electrical component 56 is on the back side.

The second substrate portion 54b is coupled to the upper portion of the main surface portion 51a of the main member 51, and the first substrate portion 54a is disposed below the second substrate portion 54b. The first substrate portion 54 a is coupled to an interposed member 52 that is coupled to the main surface portion 51 a of the main member 51. That is, the first substrate portion 54 a is indirectly coupled to the main member 51, while the second substrate portion 54 b is directly coupled to the main member 51.

Examples of the power element 56a provided in the first substrate portion 54a include a compressor control inverter and a fan motor control module. That is, a plurality of power elements 56a are mounted on the first substrate portion 54a. These power elements 56a are mounted on the front surface of the first substrate portion 54a. On the other hand, an electrical component 56 other than the power element 56a is mounted on the back surface of the first substrate portion 54a.

Many electrical components 56 other than the power element 56 a are mounted on the front surface of the front substrate 55. The electrical components mounted on the front substrate 55 include electrical components that are operated by an operator during trial operation and maintenance, electrical components that can display the control operation status, and the like. The front side substrate 55 is disposed mainly on the upper side in the main surface portion 51 a of the main member 51. That is, the front substrate 55 is disposed on the main surface 51a above the place where the heat transfer plate 60 described later is disposed.

The heat transfer plate 60 is surface-bonded to the front surface of the plurality of power elements 56a mounted on the first substrate portion 54a (see FIG. 13). That is, the heat transfer plate 60 is a member having a size including the positions where the plurality of power elements 56a are disposed, and is made of a material having high thermal conductivity such as aluminum.

The first substrate portion 54a is coupled to the back surface of the interposed member 52 that is coupled to the back surface of the main surface portion 51a of the main member 51. An opening 61 (see FIG. 9) having a size that allows the heat transfer plate 60 to be inserted is formed in the main surface portion 51 a of the main member 51 and the interposed member 52. The heat transfer plate 60 is exposed to the front side of the main member 51 through the opening 61. The opening 61 is L-shaped as indicated by a broken line in FIG.

A refrigerant jacket 37 is surface joined to the front surface of the heat transfer plate 60. The refrigerant jacket 37 is fixed to the heat transfer plate 60 by screw fastening.

The refrigerant jacket 37 is made of a thick plate made of a material having high thermal conductivity such as aluminum. A refrigerant pipe 18 a of the refrigerant circuit 18 is joined to the refrigerant jacket 37. That is, the refrigerant jacket 37 joined to the refrigerant pipe 18 a through which the refrigerant of the refrigerant circuit 18 flows is thermally connected to the power element 56 a via the heat transfer plate 60. Accordingly, the heat transfer plate 60 is joined to the power element 56a and functions as a receiving portion to which the refrigerant jacket 37 can be thermally connected.

As shown in FIGS. 10 and 13, the refrigerant jacket 37 is formed in a horizontally long rectangular shape. The refrigerant jacket 37 has a groove (see FIG. 13) extending in the longitudinal direction. Two grooves are provided on the upper and lower sides, and are parallel to each other. The refrigerant pipe 18 a bent in a U shape is press-fitted into the two grooves, so that the refrigerant pipe 18 a is joined to the refrigerant jacket 37. The refrigerant pipe 18 a fixed to the refrigerant jacket 37 functions as a cooling passage through which the refrigerant of the refrigerant circuit 18 flows. In the present embodiment, the refrigerant pipe 18a is fixed to the groove of the refrigerant jacket 37, but the present invention is not limited to this. For example, it is good also as a structure which forms two through-holes which penetrate the refrigerant | coolant jacket 37, connects a piping to one of these, and connects a U-shaped tube to the other.

The refrigerant pipe 18 a joined to the refrigerant jacket 37 is a part of a pipe (liquid side pipe) provided between the outdoor heat exchanger 25 and the expansion valve 26 in the refrigerant circuit 18. Specifically, the refrigerant pipe 18a is connected to the upper ends of a pair of pipes (extension portions) 18b extending in the vertical direction. That is, one end of the U-shaped refrigerant pipe 18a is connected to the lower end of the outdoor heat exchanger 25 via one pipe 18b extending in the vertical direction, and the other end extends in the vertical direction. The other pipe 18b is connected to the expansion valve 26. In the present embodiment, the pair of pipes 18b extending in the vertical direction extend downward when viewed from the refrigerant jacket 37 and are connected to the lower end of the heat exchanger 25 and before being connected to the expansion valve 26. It is the site | part extended toward the downward side rather than horizontal.

The terminal block 46 is provided on the main member 51 so that the position can be changed between the open position P1 (see FIG. 11) and the closed position P2 (see FIG. 12). The terminal block 46 forms a predetermined storage space with the main member 51 so that the refrigerant jacket 37 can be stored between the terminal block 46 and the main surface portion 51a of the main member 51 at the closed position P2, and the open position P1. In this case, the storage space is released. In the present embodiment, when the terminal block 46 rotates, the position of the terminal block 46 is changed between the open position P1 and the closed position P2. The terminal block 46 projects to the front side of the electrical component module 35 at the open position P1, and also serves as a gripping portion when an operator or the like holds the electrical component module 35.

The terminal block 46 is provided below the front substrate 55 on the front surface of the main surface portion 51a of the main member 51. A plurality of terminal connection portions t are provided on the front side of the terminal block 46.

Specifically, the terminal block 46 is formed by bending a member made of sheet metal so as to have a predetermined shape. The terminal block 46 is formed on the main surface portion 51a of the main member 51 so that the lower end portion can be rotated around the upper end portion. Is retained. The terminal block 46 includes a rectangular front surface portion 46a, a side surface portion 46b bent from the side end portion of the front surface portion 46a, and a bottom surface portion 46c bent from the lower end portion of the front surface portion 46a. When the terminal block 46 is at the closed position P2, the front surface portion 46a, the side surface portions 46b, and the bottom surface portion 46c together with the main surface portion 51a of the main member 51 and the heat transfer plate 60 define a storage space. A contact portion 146 is formed on the right side surface portion 46b as viewed from the front. The abutting portion 146 is formed by bending the rear end portion on the back side when the terminal block 46 is at the closed position P2 outward. The contact portion 146 is a portion that contacts the contacted portion 153 of the right side surface portion 51b of the main member 51 when the terminal block 46 is at the closed position P2. The contact portion 146 is provided with a through hole 146a at a position communicating with the lower through hole 153a provided in the contacted portion 153 when the terminal block 46 is in the closed position P2.

A plurality of terminal connection portions t are arranged on the front surface portion 46a as described above. In the present embodiment, the terminal connection portion t is disposed on the front surface portion 46a. However, the present invention is not limited to this, and another electrical component 56 may be disposed, or nothing may be disposed.

The terminal block 46 configured in this manner is rotatably held on the main surface portion 51a of the main member 51 via the support portion S. The support portion S is a portion protruding from the main surface portion 51a to the front surface side. Specifically, the support portion S is a plate-like portion that extends in the vertical direction and extends in the front-rear direction. This support portion S is provided at a position corresponding to both side surface portions 46b of the terminal block 46 in the main surface portion 51a, and supports the terminal block 46 on the main surface portion 51a so as to be rotatable. The upper end portions of the side surface portions 46b of the terminal block 46 are rotatably connected to the upper end portions of the corresponding support portions S. Specifically, at both side ends of the terminal block 46, the rotation axis bolt B3 passes through the upper end portions of the side surface portion 46b and the support portion S that are overlapped on the left and right, so that the terminal block 46 and the support portion S are connected. It is connected so that it can rotate. Each pivot shaft bolt B3 is positioned on the same straight line in the horizontal direction on both sides of the terminal block 46, thereby connecting the terminal block 46 to the support portion S so as to be pivotable about the pivot shaft bolt B3. . As the support portion S supports the terminal block 46 in this way, the terminal block 46 is positioned between the open position P1 and the closed position P2 by rotating the lower end portion around the upper end portion as the rotation center. Make changes. The terminal block 46 is rotated to a position where the front surface portion 46a of the terminal block 46 is horizontal or substantially horizontal, and the upper end of the front surface portion 46a contacts the main surface portion 51a, whereby the rotation of the terminal block 46 is restricted. The The position thus regulated is the open position P1 of the terminal block 46.

Here, the operation of the air conditioner 10 of the present embodiment will be described.

In this air conditioner 10, when the cooling operation is performed, the four-way switching valve 28 is switched to the first state. The refrigerant compressed by the compressor 23 is separated by the oil separator 24 and then flows into the outdoor heat exchanger 25 via the four-way switching valve 28.

This refrigerant exchanges heat with outdoor air in the outdoor heat exchanger 25 and condenses to become a liquid refrigerant. Specifically, outdoor air is taken into the heat exchange chamber 40 from an intake opening (not shown) provided in the back side plate 131 of the casing 30 by the outdoor fan 31, and the front side plate 130 (specifically, the first front plate). The outdoor air taken into the heat exchange chamber 40 is blown out of the casing 30 from the blowout opening provided in 130 a). At this time, since the outdoor heat exchanger 25 is disposed between the intake opening and the outdoor fan 31 (see FIG. 5), the taken outdoor air passes through the outdoor heat exchanger 25. That is, outdoor air is supplied (blowed) to the outdoor heat exchanger 25 by the outdoor fan 31. In this way, when the outdoor air passes through the outdoor heat exchanger 25, heat exchange between the refrigerant and the outdoor air is performed via the outdoor heat exchanger 25, and the refrigerant is condensed by this heat exchange to form liquid refrigerant. Become.

At this time, due to the flow of air (taken outdoor air) along the partition plate 39 inside the heat exchange chamber 40, the air inside the machine chamber 41 moves from the opening 39 a of the partition plate 39 to the heat exchange chamber 40 side. Sucked. When the air inside the machine chamber 41 is sucked to the heat exchange chamber 40 side in this way, the pressure inside the machine chamber 41 decreases, so that the outdoor air flows from the opening 152 of the cover member 150 into the machine chamber 41. Is taken in. Thereby, the flow of the air which goes to the opening part 39a of the partition plate 39 from the opening part 152 of the cover member 150 is formed in the inside of the machine room 41 (refer Fig.14 (a) and FIG.14 (b)). In addition, an opening 152 through which outdoor air flows is provided in a lower portion (cover member 150) of the side surface surrounding the machine chamber 41, and an opening 39a through which air flows out from the machine chamber 41 is an upper portion (partition) of the machine chamber 41. Since it is provided on the upper part of the plate 39, an air flow from the lower side to the upper side is formed in substantially the entire interior of the machine room 41. Due to this air flow, not only the electrical component module 35 but also other members arranged inside the machine room 41 are suitably cooled.

As described above, the liquid refrigerant which has been heat-exchanged with the outdoor air and condensed in the outdoor heat exchanger 25 flows upward through one pipe 18b extending in the vertical direction, and then flows through the refrigerant pipe 18a fixed to the refrigerant jacket 37. Flowing. At this time, if the power element 56a generates heat by driving the compressor 23 and the fan motor, the heat transfer plate 60 is heated by the heat generated by the power element 56a. However, the heating element 60a is heated by the refrigerant flowing through the refrigerant pipe 18a. The heat transfer plate 60 is cooled.

The refrigerant that has flowed through the refrigerant pipe 18a flows downward through the other pipe 18b that extends in the vertical direction, and is then decompressed by the expansion valve 26 and flows into the indoor heat exchanger 20. This refrigerant is vaporized by exchanging heat with indoor air in the indoor heat exchanger 20.

】 By this heat exchange, the indoor air is cooled and blown into the room. The refrigerant heated and evaporated by the room air flows into the accumulator 27 via the four-way switching valve 28. In the accumulator 27, the refrigerant is gas-liquid separated, and the gas refrigerant separated here is sucked into the compressor 23. During the cooling operation, the refrigerant circulation is continuously performed.

On the other hand, during the heating operation, the four-way switching valve 28 is switched to the second state. The refrigerant discharged from the compressor 23 is introduced into the indoor heat exchanger 20 via the oil separator 24 and the four-way switching valve 28. In the indoor heat exchanger 20, the refrigerant is condensed by exchanging heat with room air. By this heat exchange, the room air is heated and blown into the room. The refrigerant cooled and condensed by the indoor air is expanded by the expansion valve 26, and then flows upward through one pipe 18 b extending in the vertical direction, and then flows through the refrigerant pipe 18 a fixed to the refrigerant jacket 37. At this time, the refrigerant cools the heat transfer plate 60 heated by the heat generated by the power element 56a.

The refrigerant that has flowed through the refrigerant pipe 18a flows downward in the other pipe 18b that extends in the vertical direction, and is then introduced into the outdoor heat exchanger 25 to exchange heat with outdoor air. At this time, similarly to the cooling operation, based on the outdoor air flowing through the heat exchange chamber 40, a flow of air from below to above is formed in substantially the entire interior of the machine chamber 41.

Heat exchange is performed in the outdoor heat exchanger 25, and the evaporated refrigerant flows into the accumulator 27 via the four-way switching valve 28. The gas refrigerant separated here is sucked into the compressor 23. This refrigerant circulation is continuously performed during the heating operation.

Next, a procedure for arranging the electrical component module 35 in the outdoor unit 11 will be described with reference to FIGS.

The terminal block 46 is rotated to the open position P1, and the terminal block 46 and the gripping member 53 at the open position P1 are gripped by an operator or the like, whereby the electrical component module 35 is held. At this time, an operator or the like holding the electrical component module 35 grips the gripping member 53 so as to insert a finger into a through hole 53 a provided on the distal end side of the gripping member 53.

The held electrical component module 35 is carried into the outdoor unit 11 with the front surface of the machine room 41 open. Specifically, the electrical component module 35 is moved in the horizontal direction from the front side of the outdoor unit 11 to the upper position on the back side of the refrigerant jacket 37 in the machine room 41 (see FIG. 15). Then, the electrical component module 35 is lowered from that position until the position of the heat transfer plate 60 reaches the same height as the refrigerant jacket 37. At this height position, the electrical component module 35 is fixed inside the outdoor unit 11 by coupling the left end to the partition plate 39 and coupling the right end to the side plate 30 b of the casing 30.

Specifically, when the electrical component module 35 is lowered to the predetermined height position, at the left end portion of the electrical component module 35, the cut and raised piece 51d provided at the left end portion of the main surface portion 51a of the main member 51 is formed. The through hole 51e and the screw hole 134 of the fixing portion 39b of the partition plate 39 communicate with each other in the front-rear direction, and the right end portion of the electrical component module 35 is provided in the contacted portion 153 of the right side surface portion 51b of the main member 51. The through hole 153a and the screw hole 133 at the front end of the right side plate 132a of the casing 30 communicate with each other in the front-rear direction. In this state, the screw B1 is screwed into the screw hole 134 of the fixing portion 39b through the through hole 51e of the cut and raised piece 51d. Further, the screw B2 is screwed into the screw hole 133 of the right side plate 132a through the through hole 153a of the contacted portion 153. At this time, at the right end portion of the electrical component module 35, the screw B2 is screwed into the corresponding screw hole 133 via the upper through hole 153a. Thereby, the electrical component module 35 is fixed inside the casing 30. Note that the screw B2 is not screwed into the lower through-hole 153a at this time.

Thus, when the electrical component module 35 is fixed at a predetermined height position, the operator or the like releases the terminal block 46 and the gripping member 53 that have been gripped. The refrigerant jacket 37 is screwed to the heat transfer plate 60 by an operator or the like while the terminal block 46 is kept in the open position P1.

When the refrigerant jacket 37 is fixed to the heat transfer plate 60, the terminal block 46 is rotated to the closed position P2, and the refrigerant jacket 37 is stored in the storage space (see FIG. 16). In other words, when the position of the terminal block 46 becomes the closed position P <b> 2, the front surface side of the refrigerant jacket 37 and the heat transfer plate 60 is covered by the terminal block 46.

When the terminal block 46 is thus rotated to the closed position P2, the through hole 146a of the contact portion 146 of the terminal block 46 and the contacted portion 153 of the main member 51 are formed at the lower portion of the right end portion of the electrical component module 35. The lower through-hole 153a and the lower screw hole 133 at the front end portion of the right side plate 132a of the casing 30 are in communication with each other, and the screw B2 is screwed therein. As a result, the electrical component module 35 is more securely fixed, and the position (posture) of the terminal block 46 is also securely fixed at the closed position P2.

As described above, in the present embodiment, the pair of pipes (extension portions) 18b of the refrigerant circuit 18 join the refrigerant jacket 37 to the heat transfer plate 60 of the electric component module 35, so that the electric component module 35 Even if it is disposed in the vicinity, the electrical component 56 disposed in the electrical component module 35 is hardly wetted by condensation, frost, or the like.

Specifically, even if dew condensation or frost occurs on the surface of the refrigerant jacket 37 due to the temperature of the refrigerant flowing through the pair of pipes 18b, the heat transfer plate 60 is connected to the first substrate portion (the first circuit on which the power element 56a is mounted). Substrate) 54a and the refrigerant jacket 37, the heat transfer plate 60 prevents the dew condensation generated in the refrigerant jacket 37 from moving to the first substrate portion 54a. As a result, the electrical component 56 mounted on the first substrate portion 54a is difficult to get wet due to condensation or the like generated in the refrigerant jacket 37 or the like. Further, since the circuit board (second circuit board) on which the power element 56a such as the second board portion 54b and the front side board 55 is not mounted is disposed above the refrigerant jacket 37, the above-described circuit board is provided. Thus, even if condensation occurs on the surface of the refrigerant jacket 37, it is difficult to get wet. Therefore, the electrical components 56 mounted on the second circuit board 54 b and the front side board 55 are less likely to get wet due to condensation or the like generated in the refrigerant jacket 37. Further, since the pair of pipes 18b extend downward, even if condensation occurs on the surfaces of the pair of pipes 18b, the condensation flows down the pair of pipes 18b, The electrical component module 35 becomes difficult to get wet due to condensation or the like generated in the pair of pipes 18b.

Further, the refrigerant jacket 37 and the heat transfer plate 60 are thermally connected, whereby the refrigerant pipe 18a connected to the pair of pipes 18b and the power element 56a are thermally connected. As a result, heat exchange between the refrigerant and the power element 56a becomes possible, and the power element 56a that generates high heat in the electrical component module 35 is effectively cooled by the low-temperature refrigerant.

Further, in the present embodiment, when the air conditioner 10 is operated, the outdoor air flows from the lower side to the upper side at the arrangement position of the electrical component module 35 based on the flow of outdoor air that the outdoor fan 31 blows to the outdoor heat exchanger 25. The casing 30 is configured to flow. Therefore, in addition to the cooling of the heat generated by the power element 56a by the refrigerant, the electrical component module 35 is also cooled by the outdoor air flowing upward from below. Moreover, since the direction in which the heated air deprives heat from the electrical component module 35 and the flow direction of the outdoor air at the position where the electrical component module 35 is disposed is the same direction, The flow of air at the arrangement position is not disturbed, and the electrical component module 35 is suitably cooled by the air.

Further, in the present embodiment, the electrical component module 35 is disposed at an intermediate height position inside the machine room 41. Therefore, at the position where the electrical component module 35 is disposed, an air flow that flows upward from below is easily formed. That is, the electrical component module 35 is disposed at an intermediate height position inside the machine room 41, so that the outdoor air taken from the outside passes through the space or the electrical component module 35 to guide the lower part of the electrical component module 35. Thus, a space for guiding the outdoor air after being cooled (cooled) to the opening 39a that discharges from the machine room 41 is secured, and an air flow from the lower side to the upper side at the position where the electrical component module 35 is arranged is easily formed.

Furthermore, by disposing the electrical component module 35 at an intermediate height position inside the machine room 41, other refrigerant passages included in the refrigerant circuit 18, etc. while shortening the pair of pipes 18 b extending downward. It is possible to prevent the electrical component module 35 from getting wet due to dew condensation or the like generated on the surface. Specifically, since many refrigerant circuit components (components of the refrigerant circuit 18) such as the compressor 23 and other refrigerant passages are usually arranged at the lower end portion inside the machine room 41, the electrical component module 35 Is disposed at the lower end inside the machine room 41, the electrical component module 35 is easily wetted by condensation or the like generated on the surface of the refrigerant circuit component. On the other hand, when the electrical component module 35 is disposed at the upper end portion inside the machine room 41, the electrical component module 35 is separated from the refrigerant circuit component, so that the electrical component module 35 is difficult to wet due to condensation or the like generated in the refrigerant circuit component. However, the length dimension of a pair of piping 18b extended toward the downward side becomes large. Therefore, by disposing the electrical component module 35 at an intermediate height position inside the machine room 41 as described above, the pair of pipes 18b can be shortened, and the electrical component is caused by condensation or the like generated in the refrigerant circuit components. It is possible to suppress the module 35 from getting wet.

In the present embodiment, the casing 30 is configured such that the front surface of the machine room 41 is opened by removing a part of the front side plate 130 (second front plate 130b). And in the electrical component module 35, each

circuit board

54a, 54b, 55 is arrange | positioned so that it may mutually become parallel, and these

circuit boards

54a, 54b, 55 are in the casing 30 so that it may become parallel with respect to the front side board 130. The electrical component module 35 is disposed immediately inside the opening on the front surface. In the electrical component module 35, the

circuit components

54a, 54b, and 55 are arranged in parallel, so that the electrical component module 35 has a substantially plate shape. Therefore, the thickness in the direction orthogonal to each

circuit board

54a, 54b, 55 is smaller than the width in the direction along each

circuit board

54a, 54b, 55 of the electrical component module 35. Therefore, the electrical component module 35 is arranged immediately inside the front side plate 130 so that the

circuit boards

54a, 54b, and 55 are parallel to each other along the front side plate 130 of the casing 30 as described above. This makes it possible to reduce the thickness of the casing 30 in the direction orthogonal to the front side plate 130 (the depth direction of the outdoor unit 11). That is, when the electrical component module 35 is arranged along the depth direction, the thickness of the casing 30 in the depth direction needs to be larger than the width of the electrical component module 35. However, when the substantially plate-shaped electrical component module 35 is arranged in parallel along the front side plate 130, the thickness of the casing 30 in the depth direction can be further reduced.

In addition, since the electrical component module 35 is disposed immediately inside the second front plate 130b of the front side plate 130, when the second front plate 130b is removed and the machine room 41 is opened, the electrical component module 35 is located on the most front side. Exposed to. Therefore, it becomes easy to work on the electrical component module 35.

In the present embodiment, in order to supply outdoor air to a position below the electrical component module 35, an opening 152 that allows air to pass downward toward the electrical component module 35, and air after passing through the electrical component module 35. And an opening 39a that allows the machine room 41 to pass therethrough. The electrical component module 35 is disposed between the opening 152 of the cover member 150 and the opening 39 a of the partition plate 39 in the vertical direction of the machine room 41. Therefore, a flow of outdoor air is formed in the machine room 41 from the opening 152 of the cover member 150 toward the opening 39a of the partition plate 39 and from the lower side to the upper side at the position where the electrical component module 35 is disposed. The entire electrical component module 35 is suitably cooled by the flow of outdoor air.

In the present embodiment, the opening 152 is formed in the cover member 150 at the lower end of the casing 30, and the opening 39 a is provided on the upper part of the partition plate 39. Therefore, a flow of outdoor air directed from below to above is easily formed in substantially the entire interior of the machine room 41, and other refrigerants disposed not only in the electrical component module 35 but also in the machine room 41 due to the flow of outdoor air. Components can also be cooled.

In the present embodiment, the electrical component module 35 is detachably fixed to the casing 30 inside the casing 30, and a predetermined interval is provided between the upper end portion of the electrical component module 35 and the lower side from the upper end portion. Gripping portions (that is, the gripping member 53 and the terminal block 46) that can project from the respective portions. Therefore, by gripping these

gripping portions

53 and 46, the electrical component module 35 is held without touching the electrical component 56 mounted on each circuit board 45 of the electrical component module 35, and is attached to the inside of the casing 30 or the casing. 30 can be removed. In addition, since the electrical component module 35 can be gripped at a position that is vertically separated from the upper end portion and a portion spaced from the upper end portion by a predetermined distance, the electrical component module 35 is stably held. be able to. As a result, it becomes easy to perform work when the electrical component module 35 is attached to or removed from the outdoor unit 11. In addition, it is possible to prevent the electrical component 56 from being damaged due to the operator or the like touching the electrical component 56.

Further, in the present embodiment, the gripping

portions

53 and 46 can project to the front side, and the lower gripping portion (terminal block) 46 can be switched between the open position P1 and the closed position P2. Has been. Thus, when the pair of upper and

lower grips

53 and 46 protrude in the same direction, the electrical component module 35 is easily held when the electrical component module 35 is attached to or detached from the outdoor unit 11. Moreover, after the electrical component module 35 is attached to the outdoor unit 11, the refrigerant jacket 37 joined to the heat transfer plate 60 is covered with the lower grip 46 by switching the lower grip 46 to the closed position P2. Is called. As a result, contact of an operator or the like with this part is prevented.

Specifically, the lower gripping portion (terminal block) 46 is switched to the open position P1 and gripped together with the upper gripping member 53 protruding in the same direction, whereby the electrical component module 35 is stably held. The As a result, the attachment / detachment work of the electrical component module 35 to the outdoor unit 11 is facilitated. On the other hand, when the lower grip 46 is switched to the closed position P <b> 2, the refrigerant jacket 37 joined to the heat transfer plate 60 is covered by the lower grip 46. As a result, contact of the worker or the like with this part is prevented, and the part is protected.

In the present embodiment, since the reactor 56 c is installed on the upper surface of the upper grip portion (grip member) 53, the electrical component disposed in the electrical component module 35 by gripping the upper grip portion 53. The vicinity of the portion where the heavy reactor 56c is attached can be gripped. This makes it possible to stably hold the electrical component module 35 having the reactor 56c attached to the upper end portion and having a high center of gravity. In addition, since the through-hole 53a is provided in the upper grip 53, the grip 53 can be reliably gripped by inserting a finger into the through-hole 53a and gripping the grip 53. Therefore, the attachment / detachment work of the electrical component module 35 with respect to the outdoor unit 11 becomes easier.

In addition, the air conditioning apparatus 10 of this invention is not limited to the said embodiment, Of course, a various change can be added in the range which does not deviate from the summary of this invention.

In the above embodiment, the internal space of the casing 30 is partitioned into the heat exchange chamber 40 and the machine chamber 41 by the partition plate 39, and the electrical component module 35 is arranged inside the machine chamber 41. It is not limited. For example, as illustrated in FIG. 17, the electrical component module 35 may be disposed inside a casing 170 in which the internal space of the casing is not partitioned by a partition plate. In this case, it is preferable that the electrical component module 35 is disposed at an intermediate height position inside the casing 170. By arranging the electrical component module 35 at the intermediate height position in this way, it becomes easy to form a flow of air flowing from the lower side to the upper side at the arrangement position of the electrical component module 35. Further, by disposing the electrical component module 35 at an intermediate height position inside the casing 170, while shortening the pair of pipes 18b extending downward, the surface of other refrigerant passages and the like included in the refrigerant circuit 18 It is possible to prevent the electrical component module 35 from getting wet due to dew condensation or the like generated on the surface.

In the above embodiment, the internal space of the casing 30 is partitioned so that the heat exchange chamber 40 and the machine room 41 are arranged side by side, but the present invention is not limited to this. For example, the internal space of the casing may be partitioned so that the heat exchange chamber 40 and the machine chamber 41 are aligned vertically. In this case, inside the casing 30, the heat exchange chamber 40 may be formed on the upper side and the machine chamber 41 may be formed on the lower side, or vice versa. As described above, even when the heat exchange chamber 40 and the machine room 41 are arranged vertically, the electrical component module 35 is arranged at the intermediate height position inside the machine room 41, so that the electrical component module 35 is positioned downward. It is easy to form a flow of air that flows upward from the top. In addition, the electrical component module 35 can be prevented from getting wet due to condensation or the like generated on the surface of another refrigerant passage or the like included in the refrigerant circuit 18 while shortening the pair of pipes 18b extending downward.

Moreover, in the said embodiment, although the opening part 152 which flows outdoor air into the machine room 41 is provided one each in the front side and side surface side of the lower end part of the casing 30, it is not limited to this, The front side or Any one of the side surfaces may be provided, and a plurality of each may be provided on the front surface side and the side surface side. Further, an opening for allowing outdoor air to flow into the machine room 41 may be provided on the back side of the casing 30.

In the embodiment, one opening 39a through which outdoor air flows out from the machine room 41 is provided in the machine room 41, but a plurality of openings 39a may be provided. Moreover, the opening shape of the opening

parts

152 and 39a is not limited.

Moreover, in the said embodiment, when the electrical component module 35 is fixed to the inside of the casing 30, it fixes with the screw | threads B1 and B2, but it is not limited to this, Other fixing means may be used. . Further, the left end portion (one end portion) of the electrical component module 35 is coupled to the partition plate 39, and the right end portion (the other end portion) of the electrical component module 35 is coupled to the right side plate 132a. It is not necessary to be fixed at a predetermined height position inside the casing 30. For example, the electrical component module 35 may be fixed to a support member or the like standing on the bottom plate 30a. Moreover, the electrical component module 35 may be suspended from the top plate 30c.

In the present embodiment, of the

gripping portions

53 and 46 provided in the electrical component module 35, the lower gripping portion 46 is configured to be rotatable, and this gripping portion 46 also serves as a protective cover for the refrigerant jacket 37. However, it is not limited to this. That is, the lower grip 46 may be configured by a grip-only member whose posture is fixed.

In the embodiment, the refrigerant jacket 37 is disposed on the front side of the holding member 44 of the electrical component module 35. However, the refrigerant jacket 37 is disposed on the back side of the holding member 44. May be.

In the embodiment, the two outdoor fans 31 are arranged in the upper and lower directions, but the present invention is not limited to this. For example, only one outdoor fan 31 may be arranged.

In the above embodiment, the

second circuit board

55 or 54b is disposed on the front side and the back side of the holding member 44 one by one, but the present invention is not limited to this. For example, a plurality of circuit boards may be arranged on each of the front side and the back side of the holding member 44, or the circuit boards may be arranged only on either the front side or the back side. Even in these cases, it is only necessary that all the

second circuit boards

55 and 54b are disposed above the coolant jacket 37. In the above embodiment, the rear substrate 54 is divided into the second substrate portion 54b disposed on the upper side and the first substrate portion 54a disposed on the lower side. Also good. Even in this case, the refrigerant jacket 37 and the first circuit board (the first board part 54a and the second board part 54b) on which the power element 56a is mounted are arranged with the heat transfer plate 60 interposed therebetween, and the heat transfer plate 60 and The member (holding member 44) that supports the heat transfer plate 60 only needs to prevent the condensation of the refrigerant jacket 37 and the like from flowing toward the

first circuit boards

54a and 54b.

Moreover, in the air conditioning apparatus 10 of the said embodiment, although both a cooling operation and a heating operation are possible, it is not restricted to this, For example, the air conditioning apparatus which can perform only a cooling operation may be sufficient Or the air conditioning apparatus in which only heating operation is possible may be sufficient.

The embodiment described above is summarized as follows.

That is, the air conditioner of the present embodiment is mounted with a refrigerant circuit in which refrigerant circulates, a casing, a first circuit board that is disposed inside the casing and on which a power element is mounted, and electrical components other than the power element. An electrical component module having a second circuit board formed and a cooled part joined to the power element, and a cooling part that is thermally connected to the refrigerant of the refrigerant circuit and cools the cooled part. In the electrical component module, the first circuit board is disposed on the opposite side of the cooling part with the cooled part interposed therebetween, and the second circuit board is disposed on the upper side of the cooling part. It is characterized by being.

According to this air conditioner, even if the cooling unit is disposed in the vicinity of the electrical component module so as to be joined to the cooled part of the electrical component module, the electrical component disposed in the electrical component module is condensed. It becomes difficult to get wet with frost. Specifically, even if dew condensation or frost is generated on the surface of the cooling unit due to the temperature of the refrigerant flowing in the refrigerant circuit, the cooling target exists between the first circuit board and the cooling unit, and thus occurs in the cooling unit. Movement to the first circuit board such as dew condensation is hindered by the cooled portion. As a result, the electrical component mounted on the first circuit board is difficult to get wet. In addition, since the second circuit board is disposed above the cooling unit, it is difficult to get wet even if condensation occurs on the surface of the cooling unit as described above. Therefore, the electrical component mounted on the second circuit board is difficult to get wet due to condensation or the like.

Moreover, the refrigerant circuit and the power element are thermally connected by thermally connecting the cooling part and the cooled part, and heat exchange between the refrigerant flowing through the refrigerant circuit and the power element becomes possible. The power element that generates high heat is effectively cooled by the low-temperature refrigerant.

Further, in the air conditioner, the refrigerant circuit includes a heat exchanger, and the heat exchanger and a blowing unit for blowing air to the heat exchanger are disposed inside the casing, The air may flow from below to above in the arrangement position of the electrical component module based on the flow of air blown to the heat exchanger by the blowing means.

According to such a configuration, in addition to the cooling of the heat generated by the power element by the refrigerant, the electrical component is caused by the air flowing upward from the bottom in the arrangement position of the electrical component module based on the flow of air blown to the heat exchanger by the blower means. The module is cooled. In addition, since the direction in which the heated air is deprived of heat from the electrical component module and the direction in which air flows at the electrical component module placement position is the same direction, the air flow at the electrical component module placement location is the same. The flow is not disturbed, and the electrical component module is suitably cooled by the air.

In the air conditioner, the electrical component module may be disposed at an intermediate height position inside the casing.

According to such a configuration, an air flow that flows upward from below is easily formed at the position where the electrical component module is disposed. That is, after the electrical component module is arranged at an intermediate height position inside the casing, after passing through the space or electrical component module that guides the air taken in from the outside to the lower part of the electrical component module (cooled) Since it is easy to secure a space for guiding the air to the discharge opening, it is easy to form a flow of air from the lower side to the upper side at the position where the electrical component module is disposed.

In the air conditioner, the casing may include a partition plate that divides a space in the casing into a heat exchange chamber in which the heat exchanger and the air blowing unit are accommodated and a machine room in which the electrical component module is accommodated. And the electrical component module may be disposed at an intermediate height position in the machine room.

Even when the electrical component module is arranged in the machine room in this way, the electrical component module is arranged at an intermediate height position in the machine room, so that air is guided to the upper and lower sides of the electrical component module in the machine room. It becomes easy to secure the space to do. As a result, it becomes easy to form a flow of air that flows upward from below at the position where the electrical component module is disposed.

Further, in the air conditioner, a specific side surface of the casing is provided with a service opening that is opened by removing a part of the specific side surface, and the electrical component module is connected to the first circuit board. The circuit boards may be arranged in parallel with the second circuit board, and each of the circuit boards may be arranged immediately inside the service opening in a posture parallel to the specific side surface.

According to this configuration, the electrical component modules are substantially plate-shaped by arranging each circuit board in parallel, and the direction perpendicular to each circuit board is greater than the width in the direction along each circuit board of the electrical component module. The thickness becomes smaller. In the direction orthogonal to the specific side surface of the casing, the electrical component module is arranged immediately inside the specific side surface so that each circuit board of the electrical component module is parallel to the specific side surface of the casing. It is possible to reduce the thickness. Specifically, when the electrical component module is arranged in parallel along a plane perpendicular to the specific side surface, the thickness of the casing in the direction needs to be larger than the width of the electrical component module. By disposing the electrical component module in parallel along the specific side surface, it is possible to further reduce the thickness of the casing in the direction orthogonal to the specific side surface.

In addition, since the electrical component module is disposed immediately inside the position corresponding to the service opening on the specific side surface, the electrical component module is most removed by removing a part of the specific side surface and opening the service opening. Exposed on the front side. As a result, it becomes easier to work on the electrical component module.

In the air conditioner, the casing includes at least a machine room in which the electrical component module is accommodated, and air is passed through a side surface defining the machine room toward the lower side of the electrical component module. A first opening and a second opening that allows air after passing through the electrical component module to pass therethrough are provided, and the electrical component module has the first opening and the second in the vertical direction. It may be arranged between the openings.

According to this configuration, an air flow is formed in the machine room from the first opening toward the second opening and from below to above at the position where the electrical component module is disposed. The entire electrical component module is suitably cooled by this air flow.

Further, in the air conditioner, the casing includes a partition plate that divides a space in the casing so that the heat exchange chamber and the machine room in which the heat exchanger and the air blowing unit are accommodated are arranged side by side. The first opening may be provided at a lower part of a side surface defining the machine room, and the second opening may be provided at an upper part of the partition plate.

According to such a configuration, an air flow from the lower side to the upper side is formed in substantially the entire machine room. This air flow can cool not only the electrical component module but also other members arranged in the machine room.

Specifically, the air in the machine chamber is sucked into the heat exchange chamber through the second opening by the flow of air in the heat exchange chamber formed by the blowing means. By sucking air from the machine room to the heat exchange room, external air is sucked into the machine room through the first opening. As a result, an air flow from the first opening to the second opening is formed in the machine room. In addition, since the first opening is provided in the lower part of the side surface surrounding the machine room and the second opening is provided in the upper part of the partition plate, the air flowing upward from below to substantially the entire machine room. A flow is formed. This air flow suitably cools not only the electrical component module but also other members disposed in the machine room.

Further, in the air conditioner, the electrical component module is detachably disposed inside the casing with respect to the casing, and a predetermined interval is provided below the upper end portion of the electrical component module and the upper end portion thereof. You may have the holding part which each protrudes from the part which was.

According to such a configuration, by gripping the grip portion, the electrical component module is held without touching the electrical components mounted on the first and second circuit boards, and is attached to or detached from the casing. can do. Moreover, the electrical component module can be gripped at a position that is vertically separated from the upper end portion of the electrical component module and a portion spaced from the upper end portion by a predetermined distance. Therefore, the electrical component module can be stably held. As a result, it becomes easy to perform work when the electrical component module is attached to or removed from the outdoor unit, and damage to the electrical component due to the operator touching the electrical component can be prevented.

Further, in the air conditioner, the gripping portion protrudes from the cooled portion toward the cooling portion, and the lower gripping portion protrudes from the cooled portion toward the cooling portion. The position may be switchable between a position that covers a space that can accommodate the cooling part joined to the cooled part.

According to this configuration, since the pair of upper and lower grips protrude in the same direction from the electrical component module, the electrical component module can be easily held when the electrical component module is attached to or detached from the outdoor unit. In addition, after the electrical component module is attached to the outdoor unit, the cooling part joined to the cooled part is covered by the lower gripping part, so that the contact of the operator or the like with this part is prevented.

Specifically, the lower gripping portion is switched to a position protruding from the electrical component module, and the electrical component module is stably held by gripping with the upper gripping portion protruding in the same direction as the lower gripping portion. be able to. Therefore, it becomes easy to attach and detach the electrical component module to / from the outdoor unit. On the other hand, when the lower gripping part is switched to a position covering the space that can accommodate the cooling part, the cooling part joined to the cooled part is covered by the lower gripping part. Contact is blocked and the site is protected.

Further, in the air conditioner, the upper gripping part is constituted by a horizontal or substantially horizontal plate member, and a reactor is installed on the upper surface of the plate member, and the protrusion protrudes from the installation position of the reactor in the plate member. A hole may be provided in the direction side portion.

According to such a configuration, it is possible to grip the vicinity of the portion where the heavy reactor is attached among the electrical components arranged in the electrical component module. This makes it possible to stably hold the electrical component module having a reactor attached to the upper end portion and having a high center of gravity. Moreover, a hole is provided in the grip portion, and the grip portion can be reliably gripped by inserting a finger into the hole portion and gripping the grip portion. As a result, the operation of attaching / detaching the electrical component module to / from the outdoor unit becomes easier.

Further, in the air conditioner, the refrigerant circuit may have an extending part extending downward from the cooling part.

According to such a configuration, since the extension portion extends downward from the cooling portion, even if condensation or the like occurs on the surface of the extension portion, the condensation or the like does not go to the cooling portion. The electrical component module is less likely to get wet due to dew condensation or the like generated at the extension portion.

As described above, the air conditioner according to the present invention is useful for an air conditioner in which a refrigerant circulates and performs a vapor compression refrigeration cycle, and the electrical component module is disposed at an intermediate height position inside the casing. Even if the refrigerant passage is disposed in the vicinity thereof, the electrical component mounted on the electrical component module is suitable for making it difficult to get wet.

DESCRIPTION OF SYMBOLS 10 Air conditioning apparatus 11 Outdoor unit 18 Refrigerant circuit 18b A pair of piping (extension part)
25 Outdoor heat exchanger 30 Casing 31 Outdoor fan (air blowing means)
35 Electrical component module 37 Refrigerant jacket (cooling part)
39 Partition plate 39a Opening (second opening)
40 Heat Exchange Room 41 Machine Room 46 Terminal Block (Lower Holding Part)
53 Gripping member (upper gripping part)
54a 1st board | substrate part (1st circuit board)
54b Second board part (second circuit board)
55 Front side board (second circuit board)
56 Electrical component 56a Power element 60 Heat transfer plate (cooled part)
130 Front side plate 130a First front plate 130b Second front plate 132a Right side plate 150 Cover member 152 Opening (first opening)
P1 Open position P2 Closed position

Claims

A refrigerant circuit through which the refrigerant circulates;
A casing,
An electrical component that is disposed inside the casing and includes a first circuit board on which a power element is mounted, a second circuit board on which an electrical component other than the power element is mounted, and a portion to be cooled that is joined to the power element. Product module,
A cooling part that is thermally connected to the refrigerant of the refrigerant circuit and cools the cooled part,
In the electrical component module, the first circuit board is disposed on the opposite side of the cooling part with the cooled part interposed therebetween, and the second circuit board is disposed on the upper side of the cooling part. An air conditioner characterized by comprising:
The refrigerant circuit includes a heat exchanger,
Inside the casing, the heat exchanger and a blowing means for blowing air to the heat exchanger are arranged,
The said casing is comprised so that air may flow toward upper direction from the downward direction in the arrangement position of the said electrical component module based on the flow of the air ventilated to the said heat exchanger by the said ventilation means. The air conditioning apparatus according to 1.
The air conditioner according to claim 2, wherein the electrical component module is disposed at an intermediate height position in the casing.
The casing includes a partition plate that divides a space in the casing into a heat exchange chamber in which the heat exchanger and the air blowing unit are accommodated and a machine room in which the electrical component module is accommodated.
The air conditioner according to claim 2, wherein the electrical component module is disposed at an intermediate height position in the machine room.
A specific side surface of the casing is provided with a service opening that is opened by removing a part of the specific side surface,
The electrical component module is arranged such that the first circuit board and the second circuit board are parallel to each other, and the service openings are arranged in a posture in which each of the circuit boards is parallel to the specific side surface. The air conditioner according to any one of claims 2 to 4, wherein the air conditioner is disposed immediately inside.
The casing has a machine room in which at least the electrical component module is accommodated,
The side surface that defines the machine room has a first opening that allows air to pass downward toward the electrical component module and a second opening that allows air after passing through the electrical component module to pass therethrough. Provided,
6. The air according to claim 2, wherein the electrical component module is disposed between the first opening and the second opening in the vertical direction. Harmony device.
The casing has a partition plate that divides a space in the casing so that a heat exchange chamber and the machine room in which the heat exchanger and the air blowing unit are accommodated are arranged side by side.
The first opening is provided at a lower portion of a side surface defining the machine room,
The air conditioner according to claim 6, wherein the second opening is provided in an upper part of the partition plate.
The electrical component module is disposed in the casing so as to be removable from the casing, and the electrical component module protrudes from an upper end portion of the electrical component module and a portion spaced downward from the upper end portion. The air conditioner according to any one of claims 1 to 7, further comprising a section.
The gripping part protrudes from the cooled part toward the cooling part,
The lower gripping portion can be switched between a position protruding from the cooled portion toward the cooling portion and a position covering the space capable of accommodating the cooling portion joined to the cooled portion. It is comprised by these, The air conditioner of Claim 8 characterized by the above-mentioned.
The upper gripping part is constituted by a horizontal or substantially horizontal plate member,
A reactor is installed on the upper surface of the plate member,
The air conditioner according to claim 8 or 9, wherein a hole is provided in a portion of the plate member that is closer to the protruding direction than a position where the reactor is installed.
The air conditioner according to any one of claims 1 to 10, wherein the refrigerant circuit has an extending part extending downward from the cooling part.