JP4859554B2 - Outdoor unit - Google Patents

Description

  The present invention relates to an outdoor unit in which a mounting stay to which a solenoid valve is attached is arranged in a maintenance space.

  Conventionally, a compressor, an oil separator that separates oil in the refrigerant discharged from the compressor, a refrigerant pipe that forms a series of refrigerant circuits by connecting the compressor and the oil separator, and the like, An outdoor unit in which an electromagnetic valve provided is accommodated is known. In this type, a compressor and a plurality of electromagnetic valves are controlled based on a command signal output in accordance with an air conditioning load, whereby the flow of refrigerant flowing through the refrigerant pipe is controlled.

  This type of outdoor unit has a vertically long outer shape, and the above-described plurality of solenoid valves are arranged at a position above the oil separator in order to improve the flow of the refrigerant. The outdoor unit is formed with an inspection port that can be maintained from the outside, and from this inspection port, a mounting stay to which a plurality of solenoid valves are attached is exposed. The electromagnetic valve and the fixed portion of the electromagnetic valve coil corresponding to the electromagnetic valve are attached to the back side of the attachment stay as viewed from the inspection port for the convenience of routing the refrigerant pipe. Therefore, the maintenance space is extended to the upper part of the solenoid valve so that the coil fixing portion of the solenoid valve can be visually recognized by the operator, and the coil fixing portion of the solenoid valve can be seen from the maintenance space. (For example, refer to Patent Document 1).

On the other hand, when multiple solenoid valve coils are attached to the mounting stay, the height positions of adjacent solenoid valve coils should be different so that the adjacent solenoid valve coils are not thermally affected by their own heat generation. I try to make it.
Japanese Patent No. 3219539

  In order to reduce the size of the outdoor unit and reduce the size of the outdoor unit, it is preferable that the above-described maintenance space is as small as possible. However, when the coil fixing portion of the solenoid valve cannot be visually recognized by the operator, it cannot be confirmed during the operation whether the solenoid valve is completely fixed to the mounting stay. In particular, when the mounting height position of the solenoid valve coil is low, the solenoid valve is hidden behind the mounting stay, and the confirmation work is difficult.

  The present invention has been made in view of the above-described circumstances, and an outdoor unit in which the vertical dimension of the outdoor unit can be reduced and the coil fixing portion of the electromagnetic valve can be visually recognized by an operator. The purpose is to provide.

An outdoor unit according to the present invention includes a main body that houses a compressor, a refrigerant circuit including the compressor, and a plurality of electromagnetic valves provided in a refrigerant pipe of the refrigerant circuit. The side part of the surface to which the front plate of the main body is attached is provided with two step surfaces extending in the vertical direction that are recessed toward the rear surface side, and a plurality of refrigerant pipes are spaced apart from each other on the back side from the back step surface. A mounting stay that has a confirmation opening formed in the opening formed for the two step surfaces having a lid that can be opened and closed at a position higher than the uppermost refrigerant pipe. but out table, the height position adjacent to the rear surface side of the mounting stay is attached a plurality of solenoid valves coil differently, the upper side of the solenoid valve coil, the fastening member and said with the solenoid valve coil solenoid valve Head from the upper edge of the mounting stay The lower part of the solenoid valve coil is exposed from the surface side, and the lower part of the solenoid valve coil confirms the head of the fastening member between the solenoid valve coil and the solenoid valve from the confirmation hole of the mounting stay. It is provided as possible .
According to this configuration, since it is possible to confirm the installation of the solenoid valve and the solenoid valve coil from the confirmation hole , there is no need to look into the maintenance space from above and confirm the state of the coil fixing portion of the solenoid valve.

  According to the present invention, the mounting stay is exposed from the opening facing the maintenance space, and the confirmation means that can confirm the mounting of the solenoid valve and the solenoid valve coil from the front side of the mounting stay is formed on the mounting stay. Even if the coil fixing part of the solenoid valve is not looked into from above the maintenance space, the confirmation can be confirmed by this confirmation means. As a result, it is not necessary to secure a large space for confirming the installation above the maintenance space, and the vertical dimension of the outdoor unit can be reduced.

  Hereinafter, an outdoor unit according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view of an outdoor unit according to an embodiment of the present invention as viewed obliquely from above. Note that the front and rear, top and bottom, and left and right directions used in the following description refer to directions seen from the front plate 7 side in FIG.

  As shown in FIG. 1, the outdoor unit 1 has a substantially prismatic shape having a longitudinal direction in the front-rear direction, and the outer portion (main body portion) of the outdoor unit 1 includes a top plate 2, a bottom plate 3, and left and right side plates. 4, 5, rear plate 6, and front plate 7. The front plate 7 is attached with a fastening member such as a screw so that the front plate 7 can be removed during maintenance. Moreover, since this outdoor unit 1 is used in an environment where it is exposed to rainwater outdoors, it is assembled so that the portion where the plates are combined has a watertight structure.

As shown in FIG. 1, two step surfaces 12 and 13 that are recessed toward the rear plate 6 and are substantially parallel to the surface of the front plate 7 are formed on the right side of the surface to which the front plate 7 is attached. Yes. The step surfaces 12 and 13 extend in the vertical direction of the outdoor unit 1, and various pipes are connected to the outdoor unit 1 from the back step surface 13 of the two step surfaces 12 and 13. It protrudes from the inside to the outside. Specifically, this pipe includes a water supply pipe 14a for taking in cooling water for a water heat source, a cooling water drain pipe 14b, and a three-way refrigerant pipe (high pressure pipe 15a, low pressure pipe 15b, liquid pipe 15c). And an oil pipe 15d. In the case of the 2-way, there are two refrigerant pipes (gas pipe 32 and liquid pipe 33; see FIG. 3).
Further, a lid 16 is detachably attached to the left side of the drain pipe 14b by a fastening member.

  On the other hand, as shown in FIG. 1, hanging brackets 17 extending along the longitudinal direction of the outdoor unit 1 are attached to the left and right lower side portions of the outdoor unit 1. The hanging bracket 17 has a flange plane 17a positioned below the bottom plate 3 in a state of being attached to the outdoor unit 1, and when the outdoor unit 1 is placed on the floor surface or the like, the flange plane The outdoor unit 1 receives its own weight at 17a so that the bottom plate 3 does not receive the own weight of the outdoor unit 1.

FIG. 2 is a perspective view showing the top plate 2, the right side plate 4, the front plate 7, and the lid portion 16 from the state shown in FIG.
In the outdoor unit 1, an electrical box 11 disposed on the rear side of the front plate 7, two compressors 18 a and 18 b disposed on the rear side of the electrical box, and an electromagnetic four-way valve 19 (see FIG. 3), water-cooled heat exchanger 20, accumulator 22, oil separator 23, outdoor expansion valve 24, electromagnetic valves 36a, 36b, 36c, 36d (see FIG. 3) attached at a higher position than oil separator 23, A refrigerant regulator 25 (see FIG. 3) and the like are arranged. These are connected by a refrigerant pipe to form a refrigerant circuit. Further, when the front plate 7 of the outdoor unit 1 is removed, the substrate 8, the terminal block 9, the relay 10, and the like attached inside the electrical equipment box 11 can be maintained from the outside of the outdoor unit 1.

FIG. 3 is a two-way refrigerant circuit diagram of the air conditioner including the outdoor unit 1. In FIG. 3, reference numerals 30a and 30b denote indoor units.
The air conditioner 31 including the outdoor unit 1 is configured by connecting the outdoor unit 1 to the gas pipe 32, the liquid pipe 33, and the balance pipe 34, and connecting the indoor units 30a and 30b in parallel. ing.

  When the four-way valve 19 is switched to the state shown in FIG. 3, the refrigerant flows in the direction indicated by the arrow in FIG. In this case, the opening degree of the outdoor expansion valve 24 and the indoor mechanical valves 40a and 40b is adjusted according to the load. The water-cooled heat exchanger 20 of the outdoor unit 1 functions as an evaporator, and the indoor heat exchangers 41a and 41b function as condensers. That is, warm air is sent from the indoor heat exchangers 41a and 41b, and the heating operation is performed.

  When the four-way valve 19 is switched in the opposite direction, the refrigerant flows in the direction opposite to the arrow in FIG. In this case, the outdoor expansion valve 24 is substantially fully opened, and the opening degree of the indoor mechanical valves 40a and 40b is adjusted according to the load. The water-cooled heat exchanger 20 of the outdoor unit 1 acts as a condenser, and the indoor heat exchangers 41a and 41b act as evaporators. That is, cold air is sent out from the indoor heat exchangers 41a and 41b, and the cooling operation is performed.

  Each of the water-cooled heat exchangers 20 is provided with a cooling water circulation line 35. A part of the cooling water circulation pipe 35 is composed of a double-structure pipe through which water flows outside the refrigerant pipe, and, as shown in FIG. 2, four pipe lines 35a to 35d (multi-pass structure). The heat exchange with a refrigerant | coolant is attained in four area | regions.

  FIG. 4 is a perspective view showing the electrical equipment box shown in FIG. 2 alone. As shown in FIGS. 2 and 3, the outer shape of the electrical box 11 includes a board mounting plate 52 to which the board 51 is attached, an upper surface board 53, a left side board 54, and a right side board 55. The side is an open surface. As shown in FIG. 3, the board mounting plate 52 has an inclined portion whose right side portion is inclined toward the front, and the inclined portion avoids interference with the compressor 18b. Further, as shown in FIG. 3, the board mounting plate 52 is formed such that the upper left surface excluding the inclined portion is raised by one step toward the front side.

  On the other hand, as shown in FIG. 3, a mounting plate 56 formed in a substantially L shape as viewed from the lower side of the electrical box 11 is mounted inside the electrical box 11. The mounting plate 56 has a mounting surface 56 a for mounting the substrate. The mounting surface 56 a is disposed substantially parallel to the substrate mounting plate 52, and one end portion of the L shape is a fastening member to the substrate mounting plate 52. The other end of the L shape is attached near the right side plate 55.

FIG. 5 is an enlarged perspective view showing a maintenance space that can be seen by removing the lid 16 in FIG.
An inspection port 70 (opening) is formed across the step surfaces 12 and 13 on the back side of the lid portion 16. The inspection port 70 allows an operator to access a maintenance space S formed inside the outdoor unit 1. On the other hand, an attachment stay 71 for fixing an electromagnetic valve provided in the refrigerant pipe is attached to the maintenance space S.

FIG. 6 is a perspective view showing a state in which the electromagnetic valve coil is attached to the attachment stay 71.
As shown in FIG. 6, the attachment stay 71 is formed by integrally bending a steel plate into a substantially L shape, and extends in the depth direction of the outdoor unit 1 with the attachment stay 71 attached to the outdoor unit 1. 1 plane part 71a and the 2nd plane part 71b substantially parallel to the front plate 7 of the outdoor unit 1 are provided. A mounting portion 72 is formed at the distal end of the first flat surface portion 71a. The mounting portion 72 is bent outwardly in a substantially L shape of the mounting stay 71 and has a surface substantially parallel to the step surface 12. On the other hand, a mounting portion 73 that is bent inside the mounting stay 71 and has a substantially horizontal surface is formed at the tip of the second flat surface portion 71b. The attachment portion 72 is attached in the vicinity of the step surface 12 with a fastening member such as a screw, and the attachment portion 73 is attached in the vicinity of the step surface 13 with a fastening member.

  The mounting stay 71 is for arranging the electromagnetic valve coils in one place inside the indoor unit 1. As shown in FIG. 6, five electromagnetic valve coils 80 are attached. Specifically, five solenoid valve coils 80 are provided on the inspection port 70, one on the first flat surface portion 71 a and four on the outer surface (the surface on the back side when viewed from the front plate 7 side) of the second flat surface portion 71 b. It is attached with a mounting screw 81 inserted horizontally from the outside.

  As shown in FIG. 6, the four solenoid valve coils 80 positioned in parallel to the outer surface of the second flat portion 71b are alternately arranged so that every other mounting height in the vertical direction is different. Thereby, even if each solenoid valve coil 80 generates heat, the adjacent solenoid valve coils 80 are not affected by heat, and the heat dissipation of each solenoid valve coil 80 can be improved. Yes. Further, attachment holes 82 are respectively provided on the upper surfaces of these solenoid valve coils 80. In FIG. 6, the electromagnetic valve coil located on the upper side is indicated as 80a, and the electromagnetic valve coil located on the lower side is indicated as 80b.

  Electromagnetic valves 36a, 36b, 36c, and 36d (see FIG. 3; not shown in FIG. 6) are attached to the upper side of these electromagnetic valve coils 80, respectively. The electromagnetic valve is attached by inserting a fastening member such as a screw from above and further inserting (fastening) the fastening member into the attachment hole 82 of the electromagnetic valve coil 80.

  As shown in FIG. 6, the upper surface of the solenoid valve coil 80 a positioned on the upper side is attached at substantially the same height as the upper end edge of the attachment stay 71. Therefore, the attachment state of the solenoid valve and the solenoid valve coil 80 a can be confirmed without the operator looking into the back side of the attachment stay 71 from the upper end edge of the attachment stay 71.

  On the other hand, the upper surface of the electromagnetic valve coil 80 b positioned on the lower side is positioned below the upper end edge of the mounting stay 71. And in this outdoor unit 1, in order to shorten the external dimension of an up-down direction, the wide maintenance space is not provided above the attachment stay 71. FIG. Therefore, the operator cannot look into the mounting stay 71 from above and confirm the electromagnetic valve coil 80b. Therefore, the attachment stay 71 is formed with a confirmation hole (confirmation means) 74 through which the attachment portion between the electromagnetic valve and the electromagnetic valve coil 80b can be visually recognized. More specifically, the confirmation hole 74 has such a size that a portion where the electromagnetic valve coil 80 b and the electromagnetic valve are in contact and / or a head of a fastening member inserted from above the electromagnetic valve can be visually recognized from the confirmation hole 74. Is formed.

  According to the outdoor unit according to the embodiment of the present invention, the solenoid valve and the solenoid valve coil 80b are attached to the back side surface of the mounting stay 71, and the attachment stay 71 confirms the attachment of the solenoid valve and the solenoid valve coil 80b. Since the confirmation hole 74 that can be performed from the front side is formed, it is possible to confirm the attachment from the confirmation hole 74. Therefore, there is no need to provide a confirmation space above the maintenance space S, so that the vertical dimension of the outdoor unit 1 can be reduced. In addition, since the confirmation work can be performed from the front side of the surface of the mounting stay 71, the work efficiency is good and the work precision can be further improved.

The best mode for carrying out the present invention has been described above. However, the present invention is not limited to the above-described embodiment, and various modifications and changes can be made based on the technical idea of the present invention. .
In the present embodiment, the confirmation hole 74 is provided so that the state of the attachment portion can be visually recognized. However, the confirmation hole 74 is not limited to the confirmation by visual recognition as long as the attachment confirmation can be performed from the surface side of the attachment stay 71. For example, it is also included in the scope of the present invention that attachment can be confirmed by inserting a jig or the like from the confirmation hole 74 and confirming the presence or absence of a gap between the electromagnetic valve and the electromagnetic valve coil 80b with the jig. .

Further, in this embodiment, the confirmation means is the confirmation hole 74, but a notch (confirmation means) formed so as to extend from the outer edge of the mounting stay 71 may be used as long as the fixing portion is visible. Absent.
Furthermore, the upper edge of the mounting stay 71 is formed in a stepped shape (confirming means) so that the upper edge of the mounting stay 71 is located at the mounting position of each solenoid valve coil. The attached state may be visible.

It is a perspective view of the outdoor unit which concerns on embodiment of this invention. It is a perspective view which abbreviate | omits and shows an upper surface board, a right side board, a front board, and a cover part from the outdoor unit of FIG. It is a refrigerant circuit figure of the air harmony device provided with the outdoor unit concerning an embodiment of the invention. It is a perspective view which shows the electrical equipment box shown in FIG. It is a perspective view which expands and shows the maintenance space which can be seen by removing the cover part in FIG. It is a perspective view which shows the state which attached the solenoid valve coil to the attachment stay in FIG.

Explanation of symbols

1 Outdoor unit 7 Front plate 12, 13 Step surface 16 Lid 18a, 18b Compressor 20 Water-cooled heat exchanger 30a, 30b Indoor unit 31 Air conditioner 34 Inter-unit piping 35 Cooling water circulation line 36a, 36b, 36c, 36d Solenoid valve 56 Mounting plate 56a Mounting surface 70 Inspection port (opening)
71 Mounting stay 71a First plane portion 71b Second plane portion 74 Confirmation hole (confirmation means)
80a Solenoid valve coil located on the upper side 80b Solenoid valve coil located on the lower side S Maintenance space

Claims (1)

A main body unit that houses a compressor, a refrigerant circuit including the compressor, and a plurality of electromagnetic valves provided in a refrigerant pipe of the refrigerant circuit ;
The side part of the surface to which the front plate of the main body is attached is provided with two step surfaces extending in the vertical direction that are recessed toward the rear surface side, and a plurality of refrigerant pipes are spaced vertically from the step surface on the back side. Forming an opening for maintenance straddling two step surfaces having a lid that can be opened and closed at a position higher than the uppermost refrigerant pipe;
Exposed mounting stay with confirmation holes through the opening, the height position adjacent to the rear surface side of the mounting stay is attached a plurality of solenoid valves coils in a different manner, the upper side of the solenoid valve coil, the solenoid valve The head of the fastening member of the coil and the solenoid valve is exposed above the upper edge of the mounting stay so that the head can be confirmed from the surface side, and the lower solenoid valve coil is the solenoid valve coil An outdoor unit characterized in that a head of a fastening member between the mounting stay and the electromagnetic valve can be confirmed from the confirmation hole of the mounting stay .

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