JP2016109314A - Controller, air conditioner, and controller assembling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a controller having a refrigerant cooling type cooling structure, capable of dispensing with troublesome pipe arrangement, and achieving high workability in assembling.SOLUTION: In a refrigerant cooling type controller 12 in which a heat-generating electronic component 12b mounted on an electric component board 12a as a rear face when observed from a service face side, is fixed and mounted in a state of being kept into contact with a heat transfer material block 30 and cooled through a refrigerant pipe 10A, and the heat-generating electronic component 12b can be cooled while applying the heat transfer material block 30 as a heat sink, the refrigerant pipe 10A is fixed by a pipe fixing member 40 locked on a circumferential face by being fitted to an outer periphery of the heat transfer material block 30 from a rear face side, so that it is kept into contact with a rear face of the heat transfer material block 30 positioned at the rear face side of the electric component board 12a observed from the service face side.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a controller in which an exothermic electronic component such as a power transistor is mounted on an electrical board, and in particular, a refrigerant cooling system controller that cools the exothermic electronic part of the electrical board with a refrigerant, and the controller is mounted. The present invention relates to an air conditioner and a controller assembly method.

In an air conditioner incorporating an inverter-driven device, a controller having an electrical board on which heat-generating electronic components such as an active converter, a diode module, and a power transistor constituting the inverter are mounted is mounted on the outdoor unit side.
In recent years, with the increase in capacity of inverters and their power elements, etc., there has been a demand for improved cooling performance for controllers, and as a cooling method, refrigerant is used instead of the air cooling method in which cooling fins are provided for cooling. Refrigerant cooling system that cools by cooling is being adopted.

  In Patent Document 1 below, when a refrigerant cooling method is adopted for cooling the electrical board, an operator accesses the piping of the cooling refrigerant in order to improve the working efficiency when the cooling member is attached to the side part of the electrical component box. A structure is disclosed that is fixed from the front (service surface) side, which is the easy direction.

JP 2011-99597 A

Incidentally, the conventional structure of Patent Document 1 in which the piping of the cooling refrigerant for cooling the electrical board is fixed from the front side has a problem that the piping path of the refrigerant piping becomes complicated. That is, the cooling refrigerant pipe is a part of the refrigerant pipe that is connected to the outdoor heat exchanger on the back side of the electrical circuit board and circulates the refrigerant. Therefore, the cooling pipe is routed to the front side with less space before the back side. Troublesome handling to return to is required.
On the other hand, if the cooling refrigerant pipe is cooled by passing it through the back side of the electrical board, it is necessary to position the refrigerant pipe by groping in a place that is not directly visible to the operator during assembly. Have a problem.

Against this background, a controller having an electrical board on which heat-generating electronic components are mounted does not require troublesome piping, even if a refrigerant cooling system is used for cooling the electrical board, and positioning during assembly A cooling structure that facilitates such operations is desired.
The present invention has been made in view of the above circumstances, and a controller having a cooling structure of a refrigerant cooling system that eliminates the need for troublesome piping and that provides good workability during assembly, and this controller are mounted. An object of the present invention is to provide an air conditioner and a controller assembly method.

In order to solve the above-described problems, the controller and the air conditioner including the heat generating electronic component of the present invention employ the following means.
That is, the controller according to the present invention is fixed in a state in which the heat-generating electronic components mounted on the electrical board that is the back surface when viewed from the service surface are in contact with the heat transfer material block that is cooled through the refrigerant pipe. A refrigerant cooling type controller installed and capable of cooling the heat-generating electronic component using the heat transfer material block as a heat sink, wherein the refrigerant pipe is positioned on the back side of the electrical board as viewed from the service side. A pipe fixing member that is attached to the outer periphery of the heat transfer material block so as to be fitted from the back surface side and locked to the peripheral surface so as to be in contact with the back surface of the heat transfer material block. It is characterized by being fixed.

According to such a controller of the present invention, the refrigerant pipe used for the cooling structure of the refrigerant cooling system is in contact with the back surface of the heat transfer material block located on the back surface side of the electrical board viewed from the service surface side. Because it is fixed by a pipe fixing member that is attached to the outer periphery of the heat transfer material block so as to be fitted from the back side and locked to the peripheral surface, in a place that is not directly visible to the operator during assembly The operation of positioning and fixing (including temporarily fixing) the refrigerant piping by hand is facilitated.
In addition, in order to cool the electrical circuit board on which the heat-generating electronic components are mounted on the coolant, it is not necessary to route the coolant pipe to the front service surface side.

  In the above invention, the heat transfer material block has a substantially columnar shape with a recess for allowing the refrigerant pipe to pass through the back surface, and the pipe fixing member passes the refrigerant pipe through the heat transfer in a predetermined mounting state. A rectangular plate-like base surface that is pressed in the direction of the material block and brought into contact with the wall surface of the recess, and bent into at least a pair of flanges provided at the left and right end portions and the upper and lower end portions of the base surface An engaging portion, and the peripheral surface of the heat transfer material block is sandwiched and fixed by the elasticity of the engaging portion.

According to the present invention, the retaining portion of the pipe fixing member is easily fitted from the back surface to the outer periphery of the heat transfer material block by placing the refrigerant pipe through the recess of the heat transfer material block. Can be fixed (including temporary fixing). At this time, after at least a pair of engaging portions provided on the pipe fixing member are engaged with the outer periphery of the heat transfer material block which is opened by elasticity and is in a predetermined position, the peripheral surface of the heat transfer material block is also elastically applied. Since it is sandwiched and temporarily fixed or fixed, it is easy to fix the refrigerant pipe by the pipe fixing member.
In this case, the front end portion may be bent outward so that the inlet opening dimension of the locking portion is larger than the outer periphery of the heat transfer material block.

  In the above invention, a concave groove portion formed on the peripheral surface of the heat transfer material block so as to engage with each other in a predetermined mounting state, and a bent convex portion provided on the locking portion of the pipe fixing member, Is provided.

  According to the present invention, by engaging the concave groove portion and the bent convex portion, the predetermined mounting position can be easily recognized, and the state where the concave groove portion and the bent convex portion are engaged is ensured. Maintained.

  In said invention, it is desirable that the said refrigerant | coolant piping is fixed and integrated with the said piping fixing member.

  According to the present invention, the operation of positioning and fixing the refrigerant pipe is further facilitated. In this case, the integration of the refrigerant pipe and the pipe fixing member may be performed by brazing, for example.

  An air conditioner according to the present invention is characterized in that the controller according to any one of the above deviations of a method of cooling a plurality of heat-generating electronic components with a refrigerant pipe is mounted as an outdoor unit side controller. .

  According to such an air conditioner of the present invention, since the controller according to any one of the above-described methods of cooling a plurality of heat-generating electronic components by the refrigerant pipe is mounted as the outdoor unit side controller, the refrigerant cooling It is not necessary to route the refrigerant pipe used for the cooling structure of the system to the front service surface side, and it is easy to position and fix the refrigerant pipe by groping in a place that is not directly visible to the operator during assembly.

  The controller assembling method according to the present invention is fixed in a state where the heat-generating electronic components mounted on the electrical board that is the back surface when viewed from the service surface are in contact with the heat transfer material block that is cooled through the refrigerant pipe. A refrigerant cooling type controller assembly method that is installed and cools the heat-generating electronic components using the heat transfer material block as a heat sink, and is located on the back side of the electrical board as viewed from the service side In order to maintain the state where the refrigerant pipe is in contact with the back surface of the heat transfer material block, a pipe fixing member is attached to the outer periphery of the heat transfer material block so as to be fitted from the back surface side, and is engaged with the peripheral surface. The refrigerant pipe includes a step of clamping and fixing the refrigerant pipe between the heat transfer material block and the pipe fixing member.

According to such a controller assembling method of the present invention, the pipe fixing member is attached to the outer periphery of the heat transfer material block so as to be fitted from the back surface side and is locked to the peripheral surface, and the refrigerant pipe is made of the heat transfer material block. And the pipe fixing member, the process of fixing and temporarily fixing and fixing the refrigerant pipe by searching in a place that is not directly visible to the operator during assembly is facilitated.
In addition, in order to cool the electrical circuit board on which the heat-generating electronic components are mounted on the coolant, it is not necessary to route the coolant pipe to the front service surface side.

  According to the present invention described above, in a controller having an electrical board on which a heat-generating electronic component is mounted, even if a refrigerant cooling system is adopted for cooling the electrical board, the troublesome work of routing the refrigerant pipe to the front service surface side. Piping is not necessary, and good workability during assembly can be obtained. As a result, it is possible to reliably cool the electrical board on which the heat-generating electronic component is mounted, and thus it is possible to provide a controller and an air conditioner having excellent reliability and durability.

It is a refrigerant circuit diagram of the air conditioner concerning one embodiment of the present invention. It is a perspective view which shows the structural example of the state which removed the outer peripheral panel about the outdoor unit of the said air conditioner seeing from the front (service surface) side. It is a figure which shows one Embodiment which concerns on the cooling structure of the refrigerant cooling system applied to the outdoor controller of the said air conditioner, (a) is a disassembled perspective view, (b) is AA sectional drawing of (a). is there. It is a cross-sectional view of the principal part which shows a modification about the cooling structure of the refrigerant cooling system shown in FIG.

Embodiments according to the present invention will be described below with reference to the drawings.
FIG. 1 shows a refrigerant circuit diagram of the air conditioner according to the present embodiment, FIG. 2 shows a perspective view of the outdoor unit with the outer peripheral panel removed, and FIG. 3 shows refrigerant cooling. An exploded perspective view of the cooling structure is shown.

  The air conditioner 1 insulates the refrigerant, the compressor 2 that compresses the refrigerant, the four-way switching valve 3 that switches the circulation direction of the refrigerant, the outdoor heat exchanger 5 that exchanges heat between the refrigerant and the outside air from the outdoor fan 4, and the refrigerant. An electronic expansion valve (expansion valve; EEV) 6 for expansion, an indoor heat exchanger 8 for exchanging heat between the refrigerant and indoor air from the indoor fan 7, an accumulator 9 and the like are provided, and a refrigerant pipe 10 is provided between these devices. The closed cycle refrigeration cycle 11 is connected.

  As shown in FIG. 2, the air conditioner 1 includes a controller 12 that controls the operation of the air conditioner 1 based on an operation command from a remote controller (not shown) or the like. The controller 12 is equipped with an inverter that controls the rotational speed of the compressor 2 and switches the four-way switching valve 3 in accordance with the operation mode. Further, the rotational speed of the outdoor fan 4, the rotational speed of the indoor fan 7, and the electronic expansion valve 6 has a function of controlling the opening degree and the like, and the basic configuration is not different from a known controller.

  The controller 12 includes electronic components such as an active converter, a diode module, and a power transistor that constitute an inverter. Since these electronic components are heat-generating electronic components, it is necessary to cool the controller 12. In this embodiment, as shown in FIG. 1, for example, a refrigerant pipe 10 </ b> A between an electronic expansion valve (EEV) 6 and an indoor heat exchanger 8 constituting the refrigeration cycle 11 is arranged in contact with the controller 12. Adopts a cooling structure of refrigerant cooling system. That is, during the cooling operation, the controller 12 is cooled by the low-pressure gas-liquid two-phase refrigerant throttled by the electronic expansion valve 6 that flows through the refrigerant pipe 10A, and during the heating operation, the indoor heat exchanger 8 that flows through the refrigerant pipe 10A. Thus, the controller 12 is cooled by the high-pressure liquid refrigerant condensed and liquefied in (1).

  Note that the refrigerant pipe arranged in contact with the controller 12 does not necessarily need to be a pipe between the electronic expansion valve (EEV) 6 and the indoor heat exchanger 8 as described above, and the heat generation provided on the controller 12. For example, a refrigerant pipe that is maintained at a temperature level in a range in which a cooling effect can be expected with respect to the electronic components, such as a refrigerant pipe between the electronic expansion valve (EEV) 6 and the outdoor heat exchanger 5, Other piping parts that form the refrigeration cycle 11 such as low-pressure gas refrigerant piping may be used.

As shown in FIG. 2, the controller 12 includes a compressor 2, a four-way switching valve 3, an outdoor fan 4, an outdoor heat exchanger 5, an electronic expansion valve (EEV) 6, an accumulator 9 and the like that constitute the air conditioner 1. It is arranged at an appropriate place in the outdoor unit 13 to be accommodated.
The illustrated controller 12 is partitioned by a partition plate 16 with respect to a heat exchanger chamber 14 in which the outdoor fan 4 and the outdoor heat exchanger 5 in the outdoor unit 13 are installed, and the compressor 2, the four-way switching valve 3, the electronic An expansion valve (EEV) 6, an accumulator 9, and the like are installed via a controller support (bracket) 20 in an upper part on the machine room 15 side. That is, the controller 12 is in a position exposed to the front surface of the outdoor unit 13 with the outer peripheral panel removed, in other words, in a position that is easily accessible by an operator substantially facing the inner surface of the outer peripheral panel. The front side from which the panel is removed serves as a service surface for performing various operations related to the controller 12.

For example, as shown in FIG. 3, the controller 12 has a configuration in which a heat-generating electronic component 12 b such as a power transistor is assembled to a rectangular electric board 12 a, and an appropriate position of the outdoor unit 13 through the controller support unit 20. It is fixed to and supported by. The illustrated controller support portion 20 is, for example, a member obtained by bending a plate material into a substantially L-shaped cross section, and is supported by the partition plate 16 and the like in a state where the controller 12 is fixed by a plurality of screws 21.
The electrical circuit board support surface 20a of the controller support portion 20 is at a position substantially opposite to the inner surface of the outer peripheral panel, and includes an opening 20b into which a heat sink 30 described later is inserted.

The heat sink 30 is a molded member (a block made of a heat transfer material) made of a material having good thermal conductivity such as aluminum, for example, and is brought into contact with one surface having a substantially rectangular parallelepiped shape, which is an example of a substantially columnar shape, through the refrigerant pipe 10A. A recess 31 for placement is provided. The heat sink 30 is inserted into the opening 20b from the side of the heat transfer surface 32 opposite to the formation surface of the recess 31, and is coupled to the electrical board 12a by screwing or the like. As a result, between the electrical board 12a and the heat sink 30 In this state, the heat-generating electronic component 12b is sandwiched.
That is, the heat transfer surface 32 of the heat sink 30 cooled by the refrigerant flowing through the refrigerant pipe 10A is in contact with one surface of the heat generating electronic component 12b assembled on the electrical board 12a. The cooling structure that cools the electronic component 12b is a refrigerant cooling system that is cooled by the refrigerant flowing through the refrigerant pipe 10A that is disposed in contact with the heat sink 30.

The refrigerant pipe 10A disposed in the recess 31 of the heat sink 30 is fixed at a predetermined position by using a pipe fixing member (bracket) 40 formed by bending a metal plate. The pipe fixing member 40 includes a rectangular plate-like base surface 41 that substantially coincides with the surface in which the concave portion 31 is formed in the heat sink 30 having a substantially rectangular parallelepiped shape, and the heat transfer material block 30 and the pipe fixing member 40 are It is a member that clamps or fixes the refrigerant pipe 10A between them.
Around the base surface 41, at least one of a pair of left and right and a pair of upper and lower is provided with a flange-like engaging portion 42 that is fitted to the peripheral wall (side wall) surface of the heat sink 30 and is temporarily fixed or fixed. ing.

The illustrated pipe fixing member 40 is provided with a pair of locking portions 42L and 42R at the left and right ends of the base surface 41, and a pair of locking portions 42P and 42N at the upper and lower ends of the base surface 41. Is provided.
In the following description, the locking portions 42L, 42R, 42P, and 42N are used only when it is necessary to distinguish between the left and right (width direction) and the top and bottom (length direction) of the locking portion 42.

At least a pair of the locking portions 42 that are paired on the left and right or the top and bottom is bent in a spring shape having elasticity in a direction to sandwich the peripheral wall surface of the heat sink 30 in cooperation with each other.
The pipe fixing member 40 shown in FIG. 3 has a pair of left and right engaging portions 42L and 42R bent in a spring shape. As a suitable spring-like bend, for example, as in the cross-sectional shape shown in FIG. 3 (b), the bend portion P1 is such that the bend angle θ from the base surface 41 is an acute angle slightly smaller than 90 degrees. The locking portions 42L and 42R are bent inward toward the vertical axis of the base surface 41.
The illustrated locking portions 42L and 42R are provided over the entire length in the vertical direction of the pipe fixing member 40, but may be provided in a part of the vertical direction or intermittently in the vertical direction.

  As a result, the locking portions 42L and 42R can be elastically deformed in the direction indicated by the arrow 44 in the drawing. Accordingly, the pipe fixing member 40 that fixes the refrigerant pipe 10A is in an initial state due to the elasticity of the metal plate because the engaging portions 42L and 42R that sandwich the side surface of the heat sink 30 are pushed outward from the initial state. An inward force (force in the direction of pressing the surface of the heat sink 30) acting to return to the state acts and the temporary fixing or fixing to the heat sink 30 is ensured.

In addition, it is preferable that the front ends of the locking portions 42L and 42R be bent outward at the bent convex portion P2 so as to increase the inter-surface distance W. Since the engaging portions 42L and 42R having such a bent convex portion P2 can increase the inter-surface distance W at the entrance portion even slightly than the width dimension of the heat sink 30, initial positioning and fitting with respect to the heat sink 30 are possible. It becomes easy to join.
In particular, the operation of temporarily fixing or fixing the pipe fixing member 40 to the heat sink 30 in order to fix the refrigerant pipe 10A is a groping work on the back side of the controller 12, so that there is a gap between the inlet surfaces of the locking portions 42L and 42R. If the shape is wider than the width of the heat sink 30, initial positioning and fitting are facilitated even in a situation invisible to the operator.

On the other hand, the pair of upper and lower locking portions 42P and 42N only have a distance between the faces in which the length (up and down) direction of the heat sink 30 is fitted, and is not bent into a spring shape.
In this case, the pair of upper and lower locking portions 42P and 42N are used to securely fix the temporarily fixed pipe fixing member 40 to the electrical board 12a of the controller 12 and the electrical board support surface 20a of the controller support 20 with the screw 21. The flange portion 43 is provided with a screw hole 43a bent in the vertical direction from the tip portion. Note that the pair of upper and lower engaging portions 42P and 42N may be bent into a spring shape having the same cross-sectional shape as the pair of left and right engaging portions 42L and 42R.

For the flange portion 43 provided with a screw hole 43a for fixing the temporarily fixed pipe fixing member 40 to the electrical board 12a of the controller 12 and the electrical board support surface 20a of the controller support section 20 with the screw 21, It is not limited to the portions 42P and 42N, and may be provided on the pair of left and right engaging portions 42L and 42R, or may be provided on both.
Note that the fixing of the pipe fixing member 40 by the screw 21 may be omitted if the locking portion 42 used for temporary fixing has sufficient elasticity necessary for secure fixing.

As described above, in the controller 12 of the present embodiment, the heat-generating electronic component 12b mounted on the electrical board 12a that is the back surface when viewed from the service surface side contacts the heat sink 30 that is cooled through the refrigerant pipe 10A. In the refrigerant cooling controller 12 that is fixedly installed in a state and can cool the heat-generating electronic component 12b via the heat sink 30, the refrigerant pipe 10A is located on the back side of the electrical board 12a as viewed from the service side. The heat sink 30 is fixed by a pipe fixing member 40 that is attached to the outer periphery of the heat sink 30 so as to be fitted from the rear surface side and locked to the peripheral surface so as to be in contact with the rear surface of the heat sink 30.
That is, in order to maintain the state of the refrigerant cooling system in which the refrigerant pipe 10A contacts the back surface of the heat transfer material block 30 located on the back surface side of the electrical board 12a as viewed from the service surface side, the pipe fixing member 40 is transmitted. The process of attaching to the outer periphery of the heat-material block 30 so that it may be fitted from the back surface side, making it latch on a peripheral surface, and pinching the refrigerant | coolant piping 10A between the heat-transfer material block 30 and the pipe fixing member 40, and fixing. It has.

  Accordingly, the refrigerant pipe 10A used in the cooling structure of the refrigerant cooling system is a pipe that is positioned and temporarily fixed (or fixed) at the time of assembly, which is a groping work in a place that is not directly visible to the worker working from the service side. The fixing member 40 can be carried out by a relatively easy operation by simply fitting and fixing the fixing member 40 to the heat sink 30. Further, since the refrigerant pipe 10A can be positioned and temporarily fixed (or fixed) by a relatively easy work, there is no need to bother to reach the front service surface side, which is severe in terms of space.

  The heat sink 30 has a substantially rectangular parallelepiped shape with a recess 31 for allowing the refrigerant pipe 10A to pass through the back surface, and the pipe fixing member 40 presses the refrigerant pipe 10A in the direction of the heat sink 30 in a predetermined mounting state. A rectangular plate-like base surface 41 to be brought into contact with the wall surface of 31, and at least a pair of flange-like engaging portions 42 provided at the left and right end portions and the upper and lower end portions of the base surface 41, Since the peripheral surface of the heat sink 30 is clamped and fixed by the elasticity of the locking portion 42, the locking portion 42 of the pipe fixing member 40 is placed in a temporarily placed state where the refrigerant pipe 10 </ b> A is passed through the recess 31 of the heat sink 30. The outer periphery of the heat sink 30 can be easily fitted from the back surface and fixed or fixed temporarily.

At this time, at least a pair of the locking portions 42 provided on the pipe fixing member 40 are elastically opened and fitted into the outer periphery of the heat sink 30 at a predetermined position, and then the peripheral surface of the heat sink 30 is similarly clamped by the elasticity. Stop fixed or fixed. For this reason, the worker who works from the service side can easily perform the groping work of temporarily fixing or fixing the refrigerant pipe 10A by the pipe fixing member 40 on the back side of the electrical board 12a of the controller 12 and the controller support portion 20. Can be implemented.
In particular, in order to facilitate the work of positioning and fitting by groping, it is desirable to bend the distal end portion of the locking portion 42 outward so that the inlet opening dimension is larger than the outer periphery of the heat sink 30. .

Further, in the modification shown in FIG. 4, the groove portions 33 are provided in the heat sink 30A, and the bent protrusions P2 are formed on the pair of locking portions 42 in the pipe fixing member 40A so as to be engaged with each other in a predetermined mounting state. Is provided. In this case, one concave groove portion 33 may be a shallow groove, and the other bent convex portion P2 may be shared with a bent convex portion that increases the inter-surface distance W at the distal end portion of the locking portion 42. it can.
In such a modification, the concave groove portion 33 and the bent convex portion P2 are engaged with each other, so that the operator can easily recognize the predetermined mounting position due to the moderation feeling at the time of engagement. Thus, the state in which the concave groove portion 33 and the bent convex portion P2 are engaged is reliably maintained.

Further, in the modification shown in FIG. 4, the refrigerant pipe 10A is fixed and integrated with the pipe fixing member 40A. In the illustrated configuration example, a concave groove 45 having a semicircular cross-sectional shape for fixing the refrigerant pipe 10A is provided on the base surface 41A, and the refrigerant pipe 10A installed in the concave groove 45 is fixed and integrated by brazing or the like.
With the configuration of such a modified example, the operation of positioning and fixing (including temporary fixing) of the refrigerant pipe 10A is performed integrally with the pipe fixing member 40A, so that the operation is further facilitated.

  And the air conditioner 1 by which the controller 12 and 12A of the system which cools the heat-generating electronic component 12b demonstrated by embodiment and the modification mentioned above by the refrigerant | coolant piping 10A is mounted in the outdoor unit 13 is the refrigerant | coolant piping 10A front. In addition, it is easy to position and fix or fix the refrigerant pipe 10A by hand search in a place that is not directly visible to the operator during assembly.

As described above, according to this embodiment described above, in the controller 12 having the electrical board 12a on which the heat-generating electronic component 12b is mounted, even if the refrigerant cooling system is used for cooling the electrical board 12a, the front service is provided. The troublesome piping operation of routing the refrigerant piping to the surface side is unnecessary, and good workability at the time of assembly can be obtained. Therefore, it is possible to reliably cool the electrical board 12a on which the heat generating electronic component 12b is mounted, and it is possible to improve the reliability and durability of the controller 12 and the air conditioner 1.
In addition, this invention is not limited to the invention which concerns on said embodiment, In the range which does not deviate from the summary, it can change suitably.

DESCRIPTION OF SYMBOLS 1 Air conditioner 10,10A Refrigerant piping 11 Refrigeration cycle 12 Controller 12a Electrical board 12b Exothermic electronic component 13 Outdoor unit 15 Machine room 16 Partition plate 20 Controller support part (bracket)
20a Electrical board support surface 20b Opening 30,30A Heat sink (heat transfer material block)
31 Concave portion 32 Heat transfer surface 33 Concave groove portion 40, 40A Pipe fixing member (bracket)
41 Base surface 42, 42L, 42R, 42P, 42N Locking portion 45 Concave groove portion P1 Bending portion P2 Bending convex portion

Claims (6)

The heat-generating electronic component mounted on the electrical board, which is the back surface when viewed from the service surface side, is fixedly installed in contact with the heat-transfer material block cooled via the refrigerant pipe, and the heat-transfer material block A refrigerant cooling controller capable of cooling the heat-generating electronic component using a heat sink as a heat sink,
A back surface on the outer periphery of the heat transfer material block so that the refrigerant pipe is in contact with the back surface of the heat transfer material block located on the back surface side of the electrical board as viewed from the service surface side. A controller that is fixed by a pipe fixing member that is attached so as to be fitted from the side and is engaged with a peripheral surface. The heat transfer material block is substantially columnar with a recess for passing the refrigerant pipe through the back surface;
The pipe fixing member has a rectangular plate-like base surface that presses the refrigerant pipe in the direction of the heat transfer material block in a predetermined mounting state to contact the wall surface of the recess, and left and right end portions of the base surface; And at least a pair of flanged bent portions provided at the upper and lower end portions, and the peripheral surface of the heat transfer material block is clamped by the elasticity of the locking portions and fixed. The controller according to claim 1, characterized in that:   A concave groove formed on the peripheral surface of the heat transfer material block and a bent convex provided on the engaging portion of the pipe fixing member are provided so as to engage with each other in a predetermined mounting state. The controller according to claim 2.   The controller according to any one of claims 1 to 3, wherein the refrigerant pipe is fixed and integrated with the pipe fixing member.   An air conditioner in which the controller according to any one of claims 1 to 4 is mounted as an outdoor unit side controller, wherein a plurality of heat-generating electronic components are cooled by refrigerant piping. The heat-generating electronic component mounted on the electrical board, which is the back surface when viewed from the service surface side, is fixedly installed in contact with the heat-transfer material block cooled via the refrigerant pipe, and the heat-transfer material block A refrigerant cooling system controller assembly method for cooling the heat-generating electronic component using a heat sink as a heat sink,
In order to maintain the state in which the refrigerant pipe is in contact with the back surface of the heat transfer material block located on the back surface side of the electrical board viewed from the service surface side,
A pipe fixing member is attached to the outer periphery of the heat transfer material block so as to be fitted from the back side and is locked to the peripheral surface, and the refrigerant pipe is sandwiched between the heat transfer material block and the pipe fixing member. And a controller assembling method characterized by comprising a step of fixing.

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