JP2008107034A - Solenoid expansion valve unit and air conditioner comprising the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To increase a degree of freedom in installation when a housing is horizontally placed, by preventing a coil portion of an electromagnetic expansion valve from taking a mounting attitude to be placed at a lower side with respect to a valve body in installing the housing in an electromagnetic expansion valve unit. <P>SOLUTION: This electromagnetic expansion valve unit for mounting the electromagnetic expansion valve 1 between an indoor unit and an outdoor unit of an air conditioner, comprises the electromagnetic expansion valve 1, refrigerant pipes 3-7 respectively connected with an inlet and an outlet of the electromagnetic expansion valve 1, and a housing 2 comprising supporting portions 2a, 2b at both sides for supporting the refrigerant pipes 3-7, supporting the refrigerant pipes 3, 5, 6 connected with the inlet of the electromagnetic expansion valve 1 by the supporting portion 2b at one side, and supporting the refrigerant pipes 4, 7 connected with the outlet of the electromagnetic expansion valve 1 by the supporting portion 2a at the other side, and the coil portion 1a of the electromagnetic expansion valve 1 is disposed in the housing 2 in inclining state over the housing 2 with respect to the valve body 1b connected with the coil portion 1a. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an electromagnetic expansion valve unit and an air conditioner equipped with the electromagnetic expansion valve unit, and more particularly to an electromagnetic expansion valve unit for installing an electromagnetic expansion valve between an indoor unit and an outdoor unit of an air conditioner. The coil portion of the electromagnetic expansion valve is not placed below the valve body during installation, and the degree of installation freedom when the casing is placed horizontally can be expanded.

  Conventionally, in order to install an electromagnetic expansion valve between an indoor unit and an outdoor unit of an air conditioner, an electromagnetic expansion valve unit in which an electromagnetic expansion valve is accommodated in a casing installed on a ceiling or a wall is known. ing. In this type of electromagnetic expansion valve unit, the electromagnetic expansion valve is arranged vertically in the casing, and since it is installed on the ceiling or wall, a reduction in the size of the casing is required. The height of the electromagnetic expansion valve is limited by the height of the electromagnetic expansion valve.

  As an electromagnetic expansion valve unit that solves this problem, there is a branch unit provided in the middle of a connection pipe of an indoor / outdoor unit to connect a plurality of indoor units to a single outdoor unit. Is inclined to the branch unit opening side, and a plurality of electromagnetic expansion valves are connected via vibration-proof rubber and a fixture, and fixed to the outer casing body plate from the branch unit opening side (for example, (See Patent Document 1).

  Specifically, as shown in FIGS. 7 and 8, the branch unit is provided with a plurality of flow dividers 150 connected to the refrigerant pipes from the outdoor unit and a plurality of electromagnetic expansion valves 160 downstream thereof. The amount of refrigerant after the refrigerant branching is automatically controlled by 160 and distributed to each indoor unit via the refrigerant pipe. The electromagnetic expansion valve 160 is attached to the outer casing body plate 100 with screws 190 in a state in which a plurality of coils are inclined to the power supply cover side and connected by a fixing tool 180 via an anti-vibration rubber 170. Yes. A tongue-shaped bent portion 180 a is provided at both ends of the fixing tool 180 and is inserted into the outer box body plate 100.

  According to this branch unit, since the proportion of the height of the electromagnetic expansion valve 160 can be reduced by inclining the electromagnetic expansion valve 160, the branch unit can be thinned.

  By the way, since the electromagnetic expansion valve 160 is generally installed, care may be taken during installation work. When the electromagnetic expansion valve 160 is cooled during the cooling operation of the air conditioner and touches the air, the surroundings of the valve main body may condense and may drop as water droplets. It is necessary to perform installation work so that the valve body connected to the coil portion of the electromagnetic expansion valve 160 does not have a mounting posture above the coil portion so that the water drops do not hang down on the coil portion of the electromagnetic expansion valve 160 and fail. There is.

  For this reason, when the branch unit in Patent Document 1 is installed horizontally, it is okay because the coil portion of the electromagnetic expansion valve 160 is in the mounting posture above the valve body, but when the branch unit is installed vertically However, there is a problem that the coil portion of the electromagnetic expansion valve 160 has a horizontal mounting posture in which water droplets are easily transmitted.

In addition, there are restrictions on places where ceilings, walls, etc. are installed, and depending on the state of installation work, the branch unit in Patent Document 1 may be installed slightly tilted downward rather than completely vertically. In this case, the mounting position is such that the coil portion of the electromagnetic expansion valve 160 is on the lower surface side of the valve body. Therefore, water droplets drip on the coil portion of the electromagnetic expansion valve 160, leading to a failure of the coil portion, and there is a problem that the degree of freedom in installing the branch unit on the ceiling or wall is poor.
Japanese Patent No. 3185564 (page 3 to page 4, FIG. 6)

  In view of the above problems, the present invention prevents the coil expansion portion of the electromagnetic expansion valve from being mounted below the valve body when the housing is installed, and widens the degree of freedom of installation when the housing is placed horizontally. It is an object of the present invention to provide an electromagnetic expansion valve unit and an air conditioner including the same.

  In order to solve the above problems, the present invention is an electromagnetic expansion valve unit for installing an electromagnetic expansion valve for controlling the amount of refrigerant between an indoor unit and an outdoor unit of an air conditioner. The electromagnetic expansion valve, a refrigerant pipe connected to the inlet and the outlet of the electromagnetic expansion valve, and a support part for supporting the refrigerant pipe on both sides, and one side of the refrigerant pipe connected to the inlet of the electromagnetic expansion valve And a housing that supports the refrigerant pipe connected to the outlet of the electromagnetic expansion valve by the other support portion, and the coil portion of the electromagnetic expansion valve is provided in the casing. It is the structure characterized by arrange | positioning so that it may incline on the said housing | casing rather than the valve main body which continues in line.

  According to a second aspect of the present invention, in the first aspect of the invention, the support portion of the casing is provided so as to be opposed to both sides at different height positions from the lower surface of the casing. It has become.

  According to a third aspect of the present invention, in the first aspect of the present invention, the support portion of the casing is provided so as to face both sides at the same height from the lower surface of the casing. It has become.

  According to a fourth aspect of the present invention, there is provided an air conditioner comprising the electromagnetic expansion valve unit according to any one of the first to third aspects.

  According to this invention of Claim 1, it has arrange | positioned in the said housing | casing so that the coil part of the said electromagnetic expansion valve may incline on the said housing | casing rather than the valve main body connected to the said coil part. For this reason, when the casing is installed, the mounting posture is such that water droplets are not easily transmitted to the coil portion of the electromagnetic expansion valve, and the degree of freedom of installation when the casing is placed horizontally can be expanded. Therefore, it is possible to install the housing in a slightly inclined downward rather than completely horizontal position.

  According to the second aspect of the present invention, the support portion of the casing is provided so as to face both sides at different height positions from the lower surface of the casing. For this reason, the coil part of the electromagnetic expansion valve is located above the valve body when the end of the refrigerant pipe is supported by the support part of the housing without minding the positional relationship between the electromagnetic expansion valve and the refrigerant pipe. It can be inclined to the mounting posture.

  According to the third aspect of the present invention, the support portion of the casing is provided so as to face both sides at the same height from the lower surface of the casing. For this reason, the ends of the refrigerant pipes are arranged in a straight line and supported by the support part of the housing, so that when installing the housing between the indoor unit and the outdoor unit, the piping work of the refrigerant pipe is easy. Can be.

  According to the present invention described in claim 4, it is possible to provide an air conditioner that can obtain the same effects as those of any one of claims 1 to 3.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail as examples based on the attached drawings. FIG. 1 is an exploded perspective view showing a configuration of an electromagnetic expansion valve unit according to the present invention, FIG. 2 is a side view showing a state when the electromagnetic expansion valve unit according to the present invention is installed horizontally, and FIG. 3 is another embodiment according to the present invention. FIG. 4 is a side view showing a state when the electromagnetic expansion valve unit is horizontally installed, and FIG. 4 is a side view showing a state when the electromagnetic expansion valve unit according to the present invention is vertically installed.

  FIG. 5 is a perspective view showing a configuration in which the electromagnetic expansion valve unit according to the present invention is horizontally installed outside the indoor unit, and FIG. 6 is a perspective view showing a configuration in which the electromagnetic expansion valve unit according to the present invention is installed vertically outside the indoor unit. FIG.

  The electromagnetic expansion valve unit according to the present invention is installed between an indoor unit 12 of an air conditioner and an outdoor unit (not shown) as shown in FIG. 5 or 6, and as shown in FIGS. An electromagnetic expansion valve 1 for controlling the amount of refrigerant, refrigerant pipes 3 to 7 connected to the inlet and outlet of the electromagnetic expansion valve 1, respectively, and support portions 2a and 2b for supporting these refrigerant pipes 3 to 7 are provided on both sides. The refrigerant pipes 3, 5 and 6 connected to the inlet of the electromagnetic expansion valve 1 are supported by the support part 2b on one side, and the refrigerant pipes 4 and 7 connected to the outlet of the electromagnetic expansion valve 1 are supported by the support part 2a on the other side. A supporting housing 2 is provided. The present invention is characterized in that the coil portion 1a of the electromagnetic expansion valve 1 is disposed in the housing 2 so as to be inclined above the housing 2 rather than the valve body 1b connected to the coil portion 1a. It is said.

  Hereinafter, the configuration of the electromagnetic expansion valve unit of the present invention will be described in detail with reference to FIGS. 1 to 4, and the configuration of an air conditioner including the electromagnetic expansion valve unit will be specifically described with reference to FIGS. 5 and 6. explain. First, as shown in FIGS. 1 to 3, the configuration of the electromagnetic expansion valve unit includes an electromagnetic expansion valve 1 that is connected to a coil portion 1 a that controls opening and closing of the valve by electromagnetic action, and a lower side of the coil portion 1 a, The valve body 1b includes an inlet and an outlet, and accommodates a valve that opens and closes the inlet / outlet.

  The inlet of the electromagnetic expansion valve 1 is connected in the order of a refrigerant pipe 3, a refrigerant pipe 5, a strainer 8, a refrigerant pipe 6 and a pipe joint 10 as pipe connection parts. Further, the outlet of the electromagnetic expansion valve 1 is connected in the order of refrigerant pipe 4, strainer 9, refrigerant pipe 7 and pipe joint 11 as pipe connection parts. A heat insulating material 6 a is attached to the outer periphery of the refrigerant pipe 6, and a heat insulating material 7 a is attached to the outer periphery of the refrigerant pipe 7.

  It should be noted that the refrigerant flows into the inlet of the electromagnetic expansion valve 1 and flows out of the outlet of the electromagnetic expansion valve 1. However, when the direction of the refrigerant flowing through the electromagnetic expansion valve 1 is reversed, the electromagnetic expansion valve 1 The inlet is the outlet, and the outlet of the electromagnetic expansion valve 1 is the inlet.

  The pipe joint 10 is connected to a refrigerant pipe (not shown) drawn from the indoor unit side, and the pipe joint 11 is connected to a refrigerant pipe (not shown) drawn from the outdoor unit side. The strainer 8 and the strainer 9 capture solid foreign matters such as iron scraps mixed in the refrigerant in the refrigerant pipe so that the solid foreign matters are not mixed into the valve body 1b of the electromagnetic expansion valve 1.

  One end of the refrigerant pipe 3 is raised in an L shape from the inlet of the electromagnetic expansion valve 1, and the other end is connected to the refrigerant pipe 5. One end of the refrigerant pipe 5 has a closed end, and the other end is bent into a hairpin shape (inverted U shape) and connected to the strainer 8. The strainer 8 is connected to a refrigerant pipe 6 that extends linearly, and a pipe joint 10 is connected to the refrigerant pipe 6.

  One end of the refrigerant pipe 4 is raised in an inverted L shape from the outlet of the electromagnetic expansion valve 1, and the other end is connected to the strainer 9. The strainer 9 is connected to a refrigerant pipe 7 that extends linearly, and a pipe joint 11 is connected to the refrigerant pipe 7.

  In this way, when the electromagnetic expansion valve 1 is set in the horizontal direction, a pipe connection structure is formed in which the inlet from the electromagnetic expansion valve 1 to the pipe joint 11 is raised in an inverted L shape, and the pipe joint 10 is formed from the outlet of the electromagnetic expansion valve 1. Up to this point, it has a pipe connection structure for traps in which liquid-phase refrigerant tends to accumulate. This pipe connection structure reduces refrigerant noise that occurs when refrigerant passes through the electromagnetic expansion valve 1.

  On the other hand, the housing | casing 2 comprises a shell by the back plate, the left side plate, the right side plate, and the bottom plate, and the front and upper surface portions are open. The left side plate includes a support portion 2a, and the right side plate includes a support portion 2b. As shown by the arrows in FIG. 1, the support part 2a supports the refrigerant pipe 7 via the heat insulating material 7a, and the support part 2b supports the refrigerant pipe 6 via the heat insulating material 6a. In the present invention, both sides of the housing 2 correspond to the left side plate and the right side plate, and the lower surface of the housing 2 corresponds to the bottom plate.

  An installation hole 2e for installing the housing 2 on a ceiling, a wall, or the like is provided at a lower portion of the back plate of the housing 2. Further, an edge portion 2c bent upward is provided on the front side of the bottom plate of the housing 2, and a lid attachment hole 2d for attaching a lid (not shown) is provided on the edge portion 2c.

  The electromagnetic expansion valve unit described above supports the entire piping connection structure including the electromagnetic expansion valve 1 in which the casing 2 is installed on the ceiling, the wall, or the like by screws or the like not shown through the installation holes 2e. Therefore, the support pipe 7 and the support pipe 6 are supported by the support part 2a and the support part 2b.

  Next, a state when the electromagnetic expansion valve unit according to the present invention is installed horizontally or vertically will be described with reference to FIGS. 2 and 3 show a state in which the entire pipe connection structure including the electromagnetic expansion valve 1 when the casing 2 of the electromagnetic expansion valve unit is horizontally installed is supported by the support portion 2a and the support portion 2b.

  In the housing 2, the coil portion 1a of the electromagnetic expansion valve 1 is disposed so as to be inclined above the housing 2 with respect to the valve body 1b connected to the coil portion 1a. In FIG. 2, the support part 2a and the support part 2b of the housing | casing 2 show the Example currently formed in the position of a different height from the bottom plate of the housing | casing 2 so that it may oppose a left side board and a right side board, FIG. The support part 2a and the support part 2b of the housing | casing 2 have shown the Example currently formed in the position of the same height from the bottom plate of the housing | casing 2 so as to oppose the left side board and the right side board.

  In any case, the inclination angle of the coil portion 1a of the electromagnetic expansion valve 1 and the valve body 1b connected to the coil portion 1a is set in a range of 5 degrees to 10 degrees. However, it is not limited to this range.

  In this manner, the coil portion 1a of the electromagnetic expansion valve 1 is disposed in the housing 2 so as to be inclined above the housing 2 relative to the valve body 1b connected to the coil portion 1a. It is possible to prevent an installation posture in which water droplets are easily transmitted to the coil portion 1a of the electromagnetic expansion valve 1 at the time of installation.

  Moreover, since the coil part 1a and the valve main body 1b are set within a range of 5 degrees to 10 degrees, there are restrictions on places where the ceiling, walls, and the like are installed, and the housing 2 is completely fixed depending on the state of the installation work. Even if it is not placed horizontally, even if it is installed slightly tilted downward, it is possible to prevent an installation posture in which water droplets are easily transmitted to the coil portion 1a of the electromagnetic expansion valve 1. Further, the installation location is limited, and the casing 2 can be installed upside down. Therefore, the freedom of installation when the housing 2 is placed horizontally can be expanded.

  When the casing 2 of the embodiment of FIG. 2 is used, the refrigerant pipe 7 and the refrigerant pipe 6 are connected to the casing without minding the positional relationship among the electromagnetic expansion valve 1, the refrigerant pipe 7, and the refrigerant pipe 6. When being supported by the support portion 2a and the support portion 2b, the coil portion 1a of the electromagnetic expansion valve 1 can be tilted to the mounting posture that is above the valve body 1b.

  When the case 2 of the embodiment of FIG. 3 is used, the refrigerant pipe 7 and the refrigerant pipe 6 are arranged in a straight line and supported by the support part 2a and the support part 2b of the case 2, so that the case 2 is When installing between the indoor unit 12 and the outdoor unit not shown, the piping work of the refrigerant pipe can be facilitated.

  FIG. 4 shows a state in which the entire pipe connection structure including the electromagnetic expansion valve 1 when the casing 2 of the electromagnetic expansion valve unit is vertically installed is supported by the support portion 2a and the support portion 2b. 3, the casing 2 of the electromagnetic expansion valve unit is rotated 90 degrees so that the coil portion 1a of the electromagnetic expansion valve is located on the upper side from the state shown in FIG. .

  In FIG. 4, as in FIG. 3, the coil portion 1 a of the electromagnetic expansion valve 1 is disposed in the housing 2 so as to be inclined above the housing 2 rather than the valve body 1 b connected to the coil portion 1 a. Thus, when the housing 2 is installed, it is possible to prevent an installation posture in which water droplets are easily transmitted to the coil portion 1a of the electromagnetic expansion valve 1. Also, if the coil part 1a of the electromagnetic expansion valve 1 is to be disposed in the casing 2 so as to be inclined above the casing 2 rather than the valve body 1b connected to the coil part 1a, it is installed. It is also possible to install the housing 2 in a state where the housing 2 is reversed left and right due to restrictions on the location. Therefore, as in FIG. 3, the degree of freedom of installation when the casing 2 is placed vertically can be expanded.

  Next, the form which installed the electromagnetic expansion valve unit demonstrated so far horizontally or vertically outside the indoor unit is demonstrated using FIG. 5 and FIG. The indoor unit 12 of the air conditioner includes a base 13 that forms the back surface and a front panel 14 that forms the front surface, and the indoor unit 12 is installed on the wall. The electromagnetic expansion valve unit S is installed between the refrigerant pipe 6 and the refrigerant pipe 7 piped in a pipe cover (not shown) along a column between the walls. The electromagnetic expansion valve unit S is usually installed within 5 m from the indoor unit 12 and is installed within a distance that satisfies the control conditions for the refrigerant amount of the electromagnetic expansion valve 1.

  Thus, the installed electromagnetic expansion valve unit S can be used for an air conditioner in which the indoor unit 12 is connected to the outdoor unit via the refrigerant pipe 7. It can also be used for a multi-room air conditioner in which a plurality of indoor units are connected to one outdoor unit.

  In the first embodiment described so far, one electromagnetic expansion valve 1 is arranged in the casing 2 of the electromagnetic expansion valve unit S. However, the present invention is not limited to this. A plurality of electromagnetic expansion valves 1 may be arranged. In this case, it can be implemented by changing the structure of the pipe connection parts connected to the inlet and outlet of the electromagnetic expansion valve 1 and the support portions 2a and 2b of the housing 2.

  Further, the present invention is not limited to the electromagnetic expansion valve unit of the first embodiment, and when the housing 2 is installed on a ceiling or a wall, the housing 2 is directed from the lower surface to the upper surface of the housing 2. It is only necessary that the electromagnetic expansion valve 1 is tilted so as to stand up and the coil portion 1a of the electromagnetic expansion valve 1 is arranged on the housing 1 rather than the valve body 1b connected to the coil portion 1a.

It is a disassembled perspective view which shows the structure of the electromagnetic expansion valve unit by this invention. It is a side view which shows a state when installing the electromagnetic expansion valve unit by this invention horizontally. It is a side view which shows a state when installing the electromagnetic expansion valve unit of another Example by this invention horizontally. It is a side view which shows a state when installing the electromagnetic expansion valve unit by this invention vertically. It is a perspective view which shows the form which installed the electromagnetic expansion valve unit by this invention horizontally outside the indoor unit. It is a perspective view which shows the form which installed the electromagnetic expansion valve unit by this invention perpendicularly | vertically outside the indoor unit. It is an internal detail figure seen from the right side surface which shows the conventional electromagnetic expansion valve unit. It is the internal detail figure seen from the front which shows the conventional electromagnetic expansion valve unit.

Explanation of symbols

S Electromagnetic expansion valve unit 1 Electromagnetic expansion valve 1a Coil part 1b Valve body 2 Housing 2a Support part 2b Support part 2c Edge part 2d Cover mounting hole 2e Installation hole 3 Refrigerant pipe 4 Refrigerant pipe 5 Refrigerant pipe 6 Refrigerant pipe 6a Thermal insulation Material 7 Refrigerant piping 7a Heat insulating material 8 Strainer 9 Strainer 10 Pipe joint 11 Pipe joint 12 Indoor unit 13 Base 14 Front panel

Claims (4)

  An electromagnetic expansion valve unit for installing an electromagnetic expansion valve that controls the amount of refrigerant between an indoor unit and an outdoor unit of an air conditioner, and is connected to the electromagnetic expansion valve and an inlet and an outlet of the electromagnetic expansion valve, respectively A refrigerant pipe for supporting the refrigerant pipe on both sides, a refrigerant pipe connected to the inlet of the electromagnetic expansion valve supported by a support part on one side, and a refrigerant pipe connected to the outlet of the electromagnetic expansion valve And a coil portion of the electromagnetic expansion valve is disposed in the housing such that the coil portion of the electromagnetic expansion valve is inclined above the housing relative to the valve body connected to the coil portion. An electromagnetic expansion valve unit characterized by that.   The electromagnetic expansion valve unit according to claim 1, wherein the support portion of the housing is provided so as to face both sides at different height positions from the lower surface of the housing.   The electromagnetic expansion valve unit according to claim 1, wherein the support portion of the casing is provided so as to face both sides at the same height from the lower surface of the casing.   An air conditioner comprising the electromagnetic expansion valve unit according to any one of claims 1 to 3.

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