JP2022030631A - Air-conditioning apparatus - Google Patents

Abstract

To provide an air-conditioning apparatus with a high stability.SOLUTION: An air-conditioning apparatus includes a fan 30 and a heat exchanger 250. The fan includes a fan rotor and a fan motor 320 for driving the fan rotor. The heat exchanger includes a heat transfer pipe 251 having a plurality of linear portions 251a, and support members 252a to 252c supporting end portions of the plurality of linear portions. The support members extend in a vertical direction and the fan motor is fixed to a first motor fixing member supported by the support members.SELECTED DRAWING: Figure 10

Description

Regarding air conditioners.

An air conditioner in which a compressor, a heat exchanger on the user side, and a heat exchanger on the heat source side are housed in one housing is known. Patent Document 1 (International Publication No. 2002/07735) is an integrated type in which a compressor, an outdoor heat exchanger, an indoor heat exchanger, an outdoor blower, and an indoor blower are housed in a housing. The air conditioner is disclosed. In the air conditioner disclosed in Patent Document 1, the outdoor heat exchanger and the outdoor blower are arranged above the space in which the compressor, the indoor heat exchanger, and the indoor side blower are housed.

Although not disclosed in detail in Patent Document 1, in general, when a blower is supported above the inside of a housing in an integrated air conditioner, a columnar support member extending upward from the bottom of the housing is used. .. In this case, since the blower is arranged away from the bottom that supports the support member, the stability of the blower deteriorates.

The present disclosure proposes an air conditioner with high stability.

The air conditioner of the first aspect includes a fan and a heat exchanger. The fan has a fan rotor and a fan motor for driving the fan rotor. The heat exchanger has a heat transfer tube having a plurality of straight portions and a support member for supporting the ends of the plurality of straight portions. The support member extends in the vertical direction, and the fan motor is fixed to the first motor fixing member supported by the support member.

In the air conditioner of the first aspect, the deterioration of the stability of the fan is suppressed.

The air conditioner according to the second aspect is the air conditioner according to the first aspect, and the first motor fixing member has a first fixing portion and a second fixing portion. The first fixed portion is supported by the support member and extends in the extending direction of the straight portion. The second fixed portion is fixed to the first fixed portion, and the fan motor is fixed to the second fixed portion.

In the air conditioner of the second aspect, the fixing position of the fan in the extending direction of the straight line portion can be appropriately changed by providing the first fixing portion.

The air conditioner according to the third aspect is the air conditioner according to the first or second aspect, and the heat exchanger includes a first heat exchange unit and a second heat exchange unit. The support member includes a first support member that supports the first heat exchange portion and a second support member that supports the second heat exchange portion. The first heat exchange unit and the second heat exchange unit are arranged so as to face each other. The first motor fixing member is supported by the first support member and the second support member.

The air conditioner according to the fourth aspect is the air conditioner according to the first or second aspect, and the support member includes a third support member and a fourth support member. The third support member supports one end of the plurality of straight portions. The fourth support member supports the other end. Further, the air conditioner of the fourth aspect further includes a connecting member and a second motor fixing member. The connecting member connects the third support member and the fourth support member. The second motor fixing member connects the connecting member and the first motor fixing member.

The air conditioner of the fourth aspect can suppress the vibration of the fan during driving by including the second motor fixing member.

The air conditioner according to the fifth aspect is the air conditioner according to any one of the first to fourth aspects, and the support member has a first surface and a second surface. The first surface supports the end of the heat transfer tube and extends in the vertical direction. The second surface is formed at the edge of the first surface so as to intersect the first surface, and extends in the vertical direction. The first motor fixing member is supported on the second surface.

The air conditioner according to the sixth aspect is the air conditioner according to any one of the first to fifth aspects, and further includes a compressor constituting a refrigerant circuit together with a heat exchanger. The fan is located above the compressor.

In the air conditioner of the sixth aspect, even if the compressor is arranged below the fan, the support member does not obstruct the access to the compressor. Therefore, it is suppressed that the maintainability of the compressor is lowered.

The air conditioner according to the seventh aspect is the air conditioner according to any one of the first to sixth aspects, and the first motor fixing member has a vibration absorbing member. The first motor fixing member contacts the heat exchanger via the vibration absorbing member.

In the air conditioner of the seventh aspect, the vibration of the first motor fixing member due to the driving of the fan is suppressed.

It is a front view of the air conditioner which concerns on one Embodiment. It is a side view of the air conditioner which concerns on one Embodiment. It is a rear view of the air conditioner which concerns on one Embodiment. It is a figure which shows schematic the refrigerant circuit of the air conditioner of FIG. It is a front view which shows the internal structure of the casing of the air conditioner of FIG. It is a rear view which shows the internal structure of the casing of the air conditioner of FIG. It is sectional drawing which shows the internal structure of the casing of the air conditioner of FIG. It is an enlarged perspective view of the part around the outlet of the air conditioner of FIG. It is a perspective view of a support member. It is a perspective view around the 1st motor fixing member and the 2nd motor fixing member.

The air conditioner 1 according to the embodiment will be described below with reference to the drawings. In the following, expressions such as "upper", "lower", "front (front)", "rear (rear)", "left", and "right" may be used to explain the position and direction. Unless otherwise specified, these expressions follow the directions of the "up", "down", "front", "rear", "left", and "right" arrows shown in the drawings.

(1) Overall configuration FIG. 1 is a front view of the air conditioner 1. FIG. 2 is a side view of the air conditioner 1. FIG. 3 is a rear view of the air conditioner 1. FIG. 4 is a diagram schematically showing a refrigerant circuit 20 of the air conditioner 1. For convenience, in FIG. 2, a part of the side surface side decorative plate 112 is shown through.

The air conditioner 1 is an air conditioner that is mainly installed outdoors and performs air conditioning outdoors. Here, the outdoor means a space where at least a part is exposed to the outside air. Outdoors include places without roofs or walls, such as parks, open-air stadiums, and the like. However, the outdoors are not limited to places without a roof and walls, such as an outdoor space with a roof, an open terrace, a place like an azumaya, or a place like a courtyard without a roof surrounded by walls. Etc., including at least a part of the space that is open to the outside.

The air conditioner 1 uses a steam compression refrigeration cycle to perform outdoor cooling, dehumidification, heating, and the like. The refrigerant used in the air conditioner 1 is not limited, but is, for example, a single R32 or a mixed refrigerant containing R32. Specific examples of the mixed refrigerant containing R32 include R452B, R410A, R454B, and HFO mixed refrigerant. R452B is a mixed refrigerant containing 67.0 wt% of R32, 7.0 wt% of R125, and 26.0 wt% of R1234yf. R410A is a mixed refrigerant containing 50 wt% of R32 and 50 wt% of R125. R454B is a mixed refrigerant containing 72.5 wt% of R32 and 27.5 wt% of R1234yf. The HFO mixed refrigerant contains 45.0 wt% of HFO-1123 and 55.0 wt% of R32, and also contains 40.0 wt% of HFO-1123 and 60.0 wt% of R32. Further, the refrigerant used in the air conditioner 1 may be a natural refrigerant such as CO ₂ .

In the present embodiment, the air conditioner 1 is a device capable of cooling / dehumidifying and heating. However, the air conditioner 1 is not limited to a device capable of cooling / dehumidifying and heating. For example, the air conditioner 1 may be a dedicated cooling machine capable of performing only cooling / dehumidification. Further, for example, the air conditioner 1 may be a dedicated heating machine capable of heating only.

The air conditioner 1 mainly includes a casing 10, a refrigerant circuit 20, a user-side fan 30, a heat source-side fan 40, and a control device 50. The refrigerant circuit 20 includes a refrigerant pipe 210, a compressor 220, a refrigerant flow direction switching mechanism 230, an accumulator 240, a user-side heat exchanger 250, a heat source-side heat exchanger 260, and an expansion mechanism 270.

The user-side fan 30 generates an air flow Fa so that air passes through the user-side heat exchanger 250. The heat source side fan 40 generates an air flow Fb so that air passes through the heat source side heat exchanger 260. The control device 50 controls the operation of each device constituting the air conditioner 1 when the air conditioner 1 performs cooling, dehumidification, heating, and the like.

(2) Detailed Description Next, the casing 10, the refrigerant circuit 20, the user-side fan 30, the heat source-side fan 40, and the control device 50 will be described in detail.

(2-1) Casing The casing 10 and a part of the equipment housed in the casing 10 will be described with reference to FIGS. 1 to 3 and FIGS. 5 to 10.

FIG. 5 is a front view showing the internal configuration of the casing 10 of the air conditioner 1. FIG. 5 is a front view of the air conditioner 1 from which the front side decorative plate 111 (described later) of the casing 10 has been removed. FIG. 6 is a rear view showing the internal configuration of the casing 10 of the air conditioner 1. FIG. 6 is a rear view of the air conditioner 1 from which the back side decorative plate 113 (described later) of the casing 10 has been removed. FIG. 7 is a cross-sectional view of the air conditioner 1 cut along the AA'line of FIG. For convenience, the description of the second partition plate 152 (described later) is omitted in FIG. Further, in FIG. 7, a part of the refrigerant circuit 20 is omitted.

The casing 10 includes a front side decorative plate 111, two side side decorative plates 112, a back side decorative plate 113, a top plate 120, a bottom plate 130, a first partition plate 151, and a second partition plate 152. , A fan casing 160, a first motor fixing member 171 and second motor fixing members 172a and b. The casing 10 mainly houses the refrigerant circuit 20, the user-side fan 30, the heat source-side fan 40, the control device 50, the drain pan 140, the connecting members 190a and b, and the support members 252a to d. Will be done.

The inside of the casing 10 is mainly divided into three spaces, a heat source side area A1, a user side area A2, and a blowout area A3 (see FIG. 7).

The casing 10 has a substantially rectangular parallelepiped shape having a substantially square shape in a plan view. However, the shape of the casing 10 is not limited to a substantially rectangular parallelepiped shape having a substantially square shape in a plan view, and may have a rectangular parallelepiped shape having a rectangular shape in a plan view. Further, the casing 10 may have a polygonal prism shape having a polygonal view in a plan view, a cylindrical shape having a circular view in a plan view, or an elliptical column shape having an elliptical view in a plan view. The shape of the casing 10 may be appropriately determined.

(2-1-1) Front-side decorative plate, side-side decorative plate, and back-side decorative plate The front-side decorative plate 111 is a rectangular plate-shaped member that covers the front surface of the casing 10. The front side decorative plate 111 is formed with an outlet 111a that enables the air that has passed through the user side fan 30 to be blown out to the outside of the casing 10.

The outlet 111a is provided with a flap unit 111b that rectifies the air blown from the outlet 111a and / or changes the blowing direction. FIG. 8 is an enlarged perspective view of a portion around the outlet 111a. The flap unit 111b has a first flap group 111c and a second flap group 111d. The first flap group 111c and the second flap group 111d are provided side by side at the outlet 111a in the front-rear direction.

Each flap of the first flap group 111c is a horizontal flap including planes intersecting in the vertical direction. The flaps included in the first flap group 111c are arranged with a gap of a predetermined width in the vertical direction.

Each flap of the second flap group 111d is a vertical flap including planes intersecting in the left-right direction. The flaps included in the second flap group 111d are arranged with a gap of a predetermined width in the left-right direction.

The flap included in the second flap group 111d is rotatably attached to the outlet 111a about the rotation shaft 111d1 extending in the vertical direction.

Of the flaps included in the second flap group 111d, the left flap group and the right flap group are each connected by a rod-shaped link member 111e to form a link mechanism with respect to the flap in the center in the left-right direction. .. In the flap group connected by the link member 111e, when some of the flaps rotate, the remaining flaps also rotate in conjunction with each other. Therefore, in the second flap group 111d, the blowing direction of the air blown from the outlet 111a can be easily changed by rotating a part of the flaps.

The air conditioner 1 is provided with the flap unit 111b to rectify the wind blown from the user-side fan 30 by the first flap group 111c, and then determines the direction in which the air is blown from the outlet 111a by the second flap group 111d. Can be changed within the angle range of. Therefore, even when a propeller fan that generates a swirling wind is used as the user side fan 30, the wind generated by the user side fan 30 is rectified into a wind having straightness, and then the second flap group. With 111d, it is possible to blow out in a desired direction, and effective ventilation is possible.

The side surface side decorative plate 112 is a rectangular plate-shaped member provided on each of the two side surfaces of the casing 10. The side surface side decorative plate 112 is formed with a plurality of through holes 112a for taking in air into the casing 10 by the airflow Fb generated by the user side fan 30 and the heat source side fan 40.

The back side decorative plate 113 is a rectangular plate-shaped member provided on the back surface of the casing 10. Although the details will be described later, the back side decorative plate 113 forms a part of the blowout area A3 together with the second partition plate 152.

(2-1-2) Top plate, bottom plate The top plate 120 is a rectangular plate-shaped member provided on the upper surface of the casing 10. The top plate 120 is formed with an exhaust port 120a through which air that has passed through the heat source side fan 40 can be blown out of the casing 10. A fan guard (not shown) is provided at the exhaust port 120a.

The bottom plate 130 is a rectangular plate-shaped member provided on the lower surface of the casing 10. A compressor 220, an accumulator 240, and a drain pan 140 are mainly arranged on the upper surface of the bottom plate 130. A caster 180 is attached to the lower surface of the bottom plate 130.

The drain pan 140 is a member that mainly receives the dew condensation water generated in the user-side heat exchanger 250 and guides it to the outside of the casing 160. The drain pan 140 is provided on the upper surface of the bottom plate 130. The drain pan 140 is provided so as to be located at least below the utilization side heat exchanger 250 and the heat source side heat exchanger 260.

(2-1-3) The first partition plate, the second partition plate, and the fan casing first partition plate 151 are members that partition the heat source side area A1 and the user side area A2 inside the casing 10. .. The first partition plate 151 is a member having a substantially rectangular shape in a plan view. The first partition plate 151 is fixed to the support members 252a to 252a to d (described later) of the heat exchanger 250 on the utilization side and the second partition plate 152. The lower part of the first partition plate 151 is the heat source side area A1, and the upper part of the first partition plate 151 is the user side area A2.

The second partition plate 152, together with the fan casing 160, is a member that partitions the heat source side area A1, the user side area A2, and the blowout area A3 inside the casing 10. The second partition plate 152 has a first surface 152a parallel to the back surface side decorative plate 113, and a second surface 152b extending from each of the left and right ends of the first surface 152a to the back surface side decorative plate 113.

The second partition plate 152 is provided so as to penetrate the rear of the first partition plate 151 in the vertical direction. The lower end of the second partition plate 152 is connected to the fan outlet 160b (described later) of the fan casing 160. The upper end of the second partition plate 152 extends to the exhaust port 120a of the top plate 120. The rear side of the second partition plate 152 is covered with the back side decorative plate 113.

The fan casing 160 is a member that accommodates the heat source side fan 40 and guides the air that has passed through the heat source side fan 40 to the space surrounded by the second partition plate 152 and the back surface side decorative plate 113. The fan casing 160 has a substantially cylindrical accommodating space 160a in which the heat source side fan 40 is accommodated, and a fan outlet 160b communicating with the accommodating space 160a above the accommodating space 160a. In front of the accommodation space 160a, a suction port 160c that communicates the heat source side area A1 and the blowout area A3 is formed. The lower end of the second partition plate 152 is connected to the upper end of the fan outlet 160b.

The space surrounded by the second partition plate 152 and the back side decorative plate 113, and the inside of the fan casing 160 are the blowout area A3.

(2-1-4) Support member and connecting member The support members 252a to 252 are the heat source side of the user side heat transfer tube 251 (described later) of the user side heat exchanger 250 and the heat source side heat exchanger 260. Supports heat transfer tube 261 (described later). The support members 252a to 252ad are columnar members extending in the vertical direction. As shown in FIGS. 2, 5 and 6, in the air conditioner 1, the support members 252a to 252 have the utilization side heat transfer tube 251 held by the utilization side heat exchanger 250 above the first partition plate 151. It supports and supports the heat source side heat transfer tube 261 included in the heat source side heat exchanger 260 below the first partition plate 151.

In the air conditioner 1, the utilization side heat exchanger 250 has a first utilization side heat exchange unit 250a and a second utilization side heat exchange unit 250b. The first user-side heat exchange unit 250a and the second user-side heat exchange unit 250b are arranged on the left and right ends of the user-side area A2. The first user-side heat exchange unit 250a and the second user-side heat exchange unit 250b are arranged to face each other so as to sandwich the user-side fan 30 when viewed from the front side. Further, the heat source side heat exchanger 260 includes a first heat source side heat exchanger 260a and a second heat source side heat exchanger 260b. The first heat source side heat exchanger 260a and the second heat source side heat exchanger 260b are arranged on the left and right ends of the heat source side area A1. The first heat source side heat exchanger 260a and the second heat source side heat exchanger 260b are arranged so as to sandwich the fan casing 160 and the heat source side fan 40 when viewed from the front side.

The support member 252a is an example of the first support member. The support member 252c is an example of the second support member. The support members 252a and c are examples of the third support member. The support members 252b and d are examples of the fourth support member.

The air conditioner 1 includes a first utilization side heat exchange unit 250a, a support member 252a that supports the first heat source side heat exchanger 260a in the front, a support member 252b that supports the rear, and a second utilization side heat. A total of four support members 252a to d are provided, including a support member 250b that supports the second heat source side heat exchanger 260b in the front, and a support member 252d that supports the second heat source side heat exchanger 260b in the rear. The four support members 252a to 252ad are arranged in the casing 10 so as to be adjacent to the front end portion and the rear end portion of each of the two side surface side decorative plates 112.

Each of the support members 252a to 252 has a first surface 253, a second surface 254, and a third surface 255. The second surface 254 and the third surface 255 are formed on the left and right edge edges of the first surface 253 so as to intersect the first surface 253. The first surface 253, the second surface 254, and the third surface 255 are all strip-shaped surfaces having a predetermined width. FIG. 9 shows, as an example, a perspective view of the periphery of the end portion of the support member 252c.

The first surface 253 is a surface parallel to the front side decorative plate 111 and the back side decorative plate 113. A plurality of through holes 253a through which the heat transfer tube 251 on the utilization side and the heat transfer tube 261 on the heat source side pass are formed on the first surface 253.

The second surface 254 is formed in the casing 10 so as to extend forward from the side of the edge of the first surface 253 facing the adjacent side surface side decorative plate 112. The second surface 254 may be formed so as to extend rearward.

The third surface 255 is formed so as to extend forward from the edge opposite to the edge on which the second surface 254 of the first surface 253 is formed. The third surface 255 may also be formed so as to extend rearward.

A first motor fixing member 171 is attached to the two support members 252a and c arranged on the front side. Therefore, at least on the third surface 255 of the support members 252a and c, a notch portion 255a that can be supported by fitting a part of the first motor fixing member 171 is formed. The method of supporting the first motor fixing member 171 will be described later. Notch portions 255a may also be formed in the two support members 252b and d arranged on the rear side.

The height H (see FIG. 9) of the third surface 255 from the first surface 253 in the front-rear direction is the curved portion 251b of the heat transfer tube 251 on the utilization side and the curved portion 261b (described later) of the heat transfer tube 261 on the heat source side. , It is preferable that the height is higher than the height from the first surface 253 in the front-rear direction. As a result, when assembling the air conditioner 1, it is possible to prevent other members from coming into contact with the curved portions 251b and 261b protruding in the front-rear direction from the first surface 253.

The connecting member 190a connects the support member 252a and the support member 252b arranged adjacent to the front and rear ends of the left side surface side decorative plate 112. The connecting member 190b connects the support member 252c and the support member 252d arranged adjacent to the front and rear ends of the right side surface side decorative plate 112. The connecting members 190a and b are provided above the heat exchanger 250 on the utilization side.

(2-1-5) First Motor Fixing Member and Second Motor Fixing Member FIG. 10 is a perspective view of the periphery of the first motor fixing member 171 and the second motor fixing members 172a and b. In FIG. 10, for convenience, the user side fan 30 is shown transparently.

The first motor fixing member 171 supports the user side fan 30 in the user side area A2. The first motor fixing member 171 is supported by the support members 252a and 252a and c. Specifically, the first motor fixing member 171 is arranged at a position sandwiched between the support members 252a and c in the front view, and is supported by the support members 252a and c from the left-right direction. The entire first motor fixing member 171 overlaps with the user-side fan 30 in the height direction. The first motor fixing member 171 has a first fixing portion 171a, a second fixing portion 171b, and a vibration absorbing member 171c.

The first fixing portion 171a is a rectangular plate-shaped member extending rearward from the front support members 252a and c. The first fixing portion 171a is supported by one support member 252a and one c. The first fixing portion 171a is supported at the front end portion of the support members 252a and c, and the second fixing portion 171b is fixed to the other end.

The first fixing portion 171a has a protruding portion 171a1 at the front edge. The protrusion 171a1 projects toward the front edge of the second surface 254 of the support members 252a and c. The first fixing portion 171a is supported by being fixed to the support members 252a and c by bolts in a state where the protruding portion 171a1 is fitted in the notch portion 255a formed on the second surface 254 of the support members 252a and c. It is supported by the members 252a and c. However, the method of supporting the first fixing portion 171a by the supporting members 252a and c is not limited to this.

A through hole 171a2 penetrating in the left-right direction is formed in the first fixing portion 171a. As a result, it is suppressed that the first fixing portion 171a inhibits the intake of air into the utilization side area A2.

The second fixing portion 171b is a member fixed to the first fixing portion 171a and to which the fan motor 320 is fixed. The second fixing portion 171b is fixed to the rear end portion of the first fixing portion 171a. In the air conditioner 1, the second fixing portion 171b is fixed by two first fixing portions 171a. The second fixing portion 171b is composed of two columnar members 171b1 extending in the left-right direction. Both ends of the two columnar members 171b1 are fixed to the first fixing portion 171a in a state where they are spaced apart from each other in the vertical direction. The fan motor 320 is fixed to a support plate 171b2 provided between two columnar members 171b1 at substantially the center in the left-right direction of the second fixing portion 171b.

The first fixing portion 171a contacts the utilization side heat exchanger 250 via the vibration absorbing member 171c. The vibration absorbing member 171c is attached to the surface of the first fixing portion 171a facing the user-side heat exchanger 250. The vibration absorbing member 171c is attached so as to come into contact with the heat exchanger 250 on the user side. The vibration absorbing member 171c has a rectangular parallelepiped shape. The vibration absorbing member 171c is formed by using a material having vibration absorbing property such as rubber.

The second motor fixing members 172a and b are columnar members that connect the connecting members 190a and b and the first motor fixing member 171. One end of the second motor fixing member 172a is fixed to the connecting member 190a, and the other end is fixed to the columnar member 171b1 on the upper side of the second fixing portion 171b of the first motor fixing member 171. One end of the second motor fixing member 172b is fixed to the connecting member 190b, and the other end is fixed to the columnar member 171b1 on the upper side of the second fixing portion 171b of the first motor fixing member 171. As shown in FIG. 10, the second motor fixing member 172 is fixed so as to be inclined with respect to the horizontal direction. In the air conditioner 1, the second motor fixing members 172a and 172b are provided on the left and right sides of the user-side fan 30.

(2-2) Refrigerant circuit (2-2-1) Refrigerant piping The refrigerant piping 210 connects each device of the refrigerant circuit 20. The refrigerant pipe 210 includes a suction pipe 210a, a discharge pipe 210b, a first gas connecting pipe 210c, a liquid connecting pipe 210d, and a second gas connecting pipe 210e.

The suction pipe 210a connects the refrigerant flow direction switching mechanism 230 and the suction side of the compressor 220.

The discharge pipe 210b connects the discharge side of the compressor 220 and the refrigerant flow direction switching mechanism 230.

The first gas connecting pipe 210c connects the refrigerant flow direction switching mechanism 230 and the gas side refrigerant inlet / outlet of the heat source side heat exchanger 260.

The first gas connecting pipe 210c includes an inclined portion 210c1 that moves downward as it approaches the heat source side heat exchanger 260 from the refrigerant flow direction switching mechanism 230 (see FIG. 5). The inclined portion 210c1 is provided so that the end portion on the heat source side heat exchanger 260 side is located above the drain pan 140. As a result, the dew condensation water generated on the surface of the inclined portion 210c1 travels along the surface of the inclined portion 210c1 to the upper part of the drain pan 140, and then drops onto the drain pan 140. Therefore, it is possible to prevent the dew condensation water generated on the surface of the first gas connecting pipe 210c from dripping to other than the drain pan 140.

The liquid communication pipe 210d connects the liquid side refrigerant inlet / outlet of the heat source side heat exchanger 260 and the liquid side refrigerant inlet / outlet of the utilization side heat exchanger 250. The liquid communication pipe 210d is provided with an expansion mechanism 270.

The liquid communication pipe 210d includes an inclined portion 210d1 that moves downward from the expansion mechanism 270 toward the utilization side heat exchanger 250 or the heat source side heat exchanger 260 (see FIG. 5). The inclined portion 210d1 is provided so that the end portion on the utilization side heat exchanger 250 side or the heat source side heat exchanger 260 side is located above the drain pan 140. As a result, the dew condensation water generated on the surface of the inclined portion 210d1 travels along the surface of the inclined portion 210d1 to the upper part of the drain pan 140, and then drops onto the drain pan 140. Therefore, it is possible to prevent the dew condensation water generated on the surface of the liquid communication pipe 210d from dripping to other than the drain pan 140.

The second gas connecting pipe 210e connects the gas-side refrigerant inlet / outlet of the user-side heat exchanger 250 and the refrigerant flow direction switching mechanism 230.

The second gas connecting pipe 210e includes an inclined portion 210e1 that moves downward as it approaches the user-side heat exchanger 250 from the refrigerant flow direction switching mechanism 230 (see FIG. 5). The inclined portion 210e1 is provided so that the end portion on the utilization side heat exchanger 250 side is located above the drain pan 140. As a result, the dew condensation water generated on the surface of the inclined portion 210e1 travels along the surface of the inclined portion 210e1 to the upper part of the drain pan 140, and then drops onto the drain pan 140. Therefore, it is possible to prevent the dew condensation water generated on the surface of the second gas connecting pipe 210e from dripping to other than the drain pan 140.

(2-2-2) Compressor The compressor 220 compresses the refrigerant in the refrigerant circuit 20. The compressor 220 compresses the low-pressure refrigerant in the sucked refrigeration cycle, pressurizes it to the high pressure in the refrigeration cycle, and discharges the refrigerant.

The compressor 220 is not limited in type, but is, for example, a rotary type or scroll type positive displacement compressor. The compression mechanism (not shown) of the compressor 220 is driven by the motor 220a.

(2-2-3) Refrigerant flow direction switching mechanism The refrigerant flow direction switching mechanism 230 switches the flow direction of the refrigerant discharged from the compressor 220 to change the operating state of the air conditioner 1 to the first operating state and the second operating state. Switch between operating conditions. In the first operating state, the user-side heat exchanger 250 is made to function as an evaporator, and the heat source-side heat exchanger 260 is made to function as a condenser (radiator). In the second operating state, the user-side heat exchanger 250 is made to function as a condenser (radiator), and the heat source-side heat exchanger 260 is made to function as an evaporator.

The refrigerant flow direction switching mechanism 230 switches the operating state of the air conditioner 100 to the first operating state during the cooling / dehumidifying operation. Specifically, during the cooling / dehumidifying operation, the refrigerant flow direction switching mechanism 230 communicates the suction pipe 210a with the second gas connecting pipe 210e and the discharge pipe 210b with the first gas connecting pipe 210c (refrigerant in FIG. 4). See the solid line in the flow direction switching mechanism 230).

The refrigerant flow direction switching mechanism 230 switches the operating state of the air conditioner 1 to the second operating state during the heating operation. Specifically, during the heating operation, the refrigerant flow direction switching mechanism 230 communicates the suction pipe 210a with the first gas connecting pipe 210c and the discharge pipe 210b with the second gas connecting pipe 210e (refrigerant flow direction switching in FIG. 4). See broken line in mechanism 230).

In the air conditioner 1, the refrigerant flow direction switching mechanism 230 is a four-way switching valve. However, the refrigerant flow direction switching mechanism 230 is not limited to the four-way switching valve, and may be configured so as to be able to realize the above-mentioned switching of the refrigerant flow direction by combining a plurality of solenoid valves and the refrigerant pipe. ..

(2-2-4) Accumulator The accumulator 240 divides the inflowing refrigerant into a gas refrigerant and a liquid refrigerant. The accumulator 240 is provided in the suction pipe 210a. As for the refrigerant flowing into the accumulator 240, the gas refrigerant is collected in the upper space and the liquid refrigerant is collected in the lower space. The gas refrigerant collected in the upper space flows out to the compressor 220.

(2-2-5) User-side heat exchanger The user-side heat exchanger 250 exchanges heat between the refrigerant and the air at the installation location of the air conditioner 1. When the operating state of the air conditioner 1 is in the first operating state, the user-side heat exchanger 250 functions as an evaporator. When the operating state of the air conditioner 1 is in the second operating state, the user-side heat exchanger 250 functions as a condenser.

The user-side heat exchanger 250 is a fin-and-tube including a user-side heat transfer tube 251, a plurality of heat transfer fins (not shown), and a portion of the support members 252a to 252a to support the user-side heat transfer tube 251. It is a type heat exchanger. The user-side heat transfer tube 251 has a plurality of straight portions 251a and a plurality of curved portions 251b (see FIG. 2).

A plurality of heat transfer fins are laminated in the front-rear direction. In the first utilization side heat exchange portion 250a, the support member 252a is arranged at the front end portion of the laminated heat transfer fins, and the support member 252b is arranged at the rear side end portion of the laminated heat transfer fins. In the second utilization side heat exchange unit 250b, the support member 252c is arranged at the front end of the laminated heat transfer fins, and the support member 252d is arranged at the rear end of the laminated heat transfer fins.

The straight portion 251a has support members 252a to d at the front end and the rear end, respectively, so that the stretching direction is along the front-rear direction and a gap is formed between the straight portion 251a and the adjacent straight portion 251a. Supported by.

The curved portion 251b connects the ends of the adjacent straight portions 251a to each other.

(2-2-6) Heat Source Side Heat Exchanger The heat source side heat exchanger 260 exchanges heat between the refrigerant and the air at the installation location of the air conditioner 1. When the operating state of the air conditioner 1 is in the first operating state, the heat source side heat exchanger 260 functions as a condenser. When the operating state of the air conditioner 1 is in the second operating state, the heat source side heat exchanger 260 functions as an evaporator.

The heat source side heat exchanger 260 is a fin and tube including a heat source side heat transfer tube 261, a plurality of heat transfer fins (not shown), and a portion that supports the heat source side heat transfer tubes 261 of the support members 252a to 252a to d. It is a type heat exchanger. The heat source side heat transfer tube 261 has a plurality of straight portions 261a and a plurality of curved portions 261b (see FIG. 2).

A plurality of heat transfer fins are laminated in the front-rear direction. In the first heat source side heat exchange unit 260a, the support member 252a is arranged at the front end of the laminated heat transfer fins, and the support member 252b is arranged at the rear end of the laminated heat transfer fins. In the second heat source side heat exchange unit 260b, the support member 252c is arranged at the front end of the laminated heat transfer fins, and the support member 252d is arranged at the rear end of the laminated heat transfer fins.

The plurality of heat transfer fins included in the user-side heat exchanger 250 and the heat source-side heat exchanger 260 have integrated heat transfer fins laminated in the front-rear direction from the user-side heat exchanger 250 to the heat source-side heat exchanger 260. It is formed by doing.

The straight portion 261a has support members 252a to d at the front end and the rear end, respectively, so that the stretching direction is along the front-rear direction and a gap is formed between the straight portion 261a and the adjacent straight portion 261a. Supported by.

The curved portion 261b connects the ends of the adjacent straight portions 261a to each other.

(2-2-7) Expansion mechanism The expansion mechanism 270 reduces the pressure of the refrigerant flowing through the refrigerant circuit 20. The expansion mechanism 270 is provided in the liquid communication pipe 210d. In the air conditioner 1, the expansion mechanism 270 is an electronic expansion valve whose opening degree can be adjusted. However, the expansion mechanism 270 is not limited to the electronic expansion valve, and may be a mechanical expansion valve used together with a heat-sensitive cylinder or a capillary tube.

(2-3) User-side fan The user-side fan 30 is a propeller fan that generates an air flow Fa so that air passes through the user-side heat exchanger 250. The user-side fan 30 has a fan rotor 310 and a fan motor 320. The fan rotor 310 is driven by the fan motor 320. In the air conditioner 1, the fan rotor 310 and the fan motor 320 are arranged so that their rotation axes are along the horizontal direction.

When the fan motor 320 is driven and the user-side fan 30 generates an air flow Fa, air is taken into the user-side area A2 inside the casing 10 through the through hole 112a of the side decorative plate 112 of the casing 10 (FIG. 1). , See Figure 3). The air taken into the inside of the casing 10 passes through the heat exchanger 250 on the user side, then passes through the fan 30 on the user side, and is blown out from the outlet 111a provided on the decorative plate 111 on the front side (FIG. 2. See Fig. 7). The user-side fan 30 is supported by the support members 252a to 252d via the first motor fixing member 171 and the second motor fixing members 172a and b. The user-side fan 30 is supported by the support member 252a and the support member 252c via the first motor fixing member 171. The user-side fan 30 is arranged at a position sandwiched between the support member 252a and the support member 252c in a front view, and is supported by the first motor fixing member 171 from the left-right direction. The user-side fan 30 and the first motor fixing member 171 are arranged at overlapping positions in the height direction. Specifically, the user-side fan 30 is arranged at a position that overlaps the entire width of the first motor fixing member 171 in the height direction. By supporting the user-side fan 30 from the left-right direction by the first motor fixing member 171 arranged at a position where the user-side fan 30 overlaps in the height direction, it is possible to suppress the deterioration of the stability of the user-side fan 30.

(2-4) Heat source side fan The heat source side fan 40 generates an air flow Fb so that air passes through the heat source side heat exchanger 260. The heat source side fan 40 has a fan rotor 410 and a fan motor 420. The heat source side fan 40 is housed in the fan casing 160. The fan rotor 410 is driven by the fan motor 420. In the air conditioner 1, the heat source side fan 40 is arranged so that the rotation axis is along the front-rear direction.

When the fan motor 420 is driven and the heat source side fan 40 generates an air flow Fb, air is taken into the heat source side area A1 inside the casing 10 through the through hole 112a of the side decorative plate 112 of the casing 10 (FIG. 1). , See Figure 3). The air taken into the inside of the casing 10 passes through the heat source side heat exchanger 260, then is taken into the blowout area A3 through the suction port 160c of the fan casing 160, and passes through the heat source side fan 40. The air that has passed through the heat source side fan 40 passes through the fan outlet 160b of the fan casing 160, and then passes through the space sandwiched between the side surface side decorative plate 112 and the second partition plate 152, and passes through the top plate. It is blown out from the exhaust port 120a of 120 (see FIGS. 2, 3, and 7).

The heat source side fan 40 is a sirocco fan. However, the type of the heat source side fan 40 is not limited to the sirocco fan. If it is possible to generate the above-mentioned air flow, the type of the heat source side fan 40 may be appropriately determined. For example, the heat source side fan 40 may be a turbo fan or a propeller fan.

(2-5) Control device The control device 50 transmits a control signal to each device of the air conditioner 1 including the compressor 220, the refrigerant flow direction switching mechanism 230, the expansion mechanism 270, the user side fan 30, and the heat source side fan 40. It is connected so that it can be sent and received. Further, the control device 50 is also connected to a temperature sensor and a pressure sensor (not shown) provided in each part of the air conditioner 1 so as to be able to transmit and receive control signals.

In the air conditioner 1, the control device 50 is realized by a microcomputer (not shown), a memory, or the like (not shown). The microprocessor includes a control arithmetic unit and a storage device. A processor such as a CPU or GPU can be used as the control arithmetic unit. The control arithmetic unit reads a program stored in the storage device and performs a predetermined arithmetic processing according to this program. Further, the control arithmetic unit can write the arithmetic result to the storage device and read the information stored in the storage device according to the program.

The control device 50 is only an example of a control device that controls the operation of the air conditioner 1. The control device may realize the same function as the function exhibited by the control device 50 of the present embodiment by hardware such as a logic circuit, or may be realized by a combination of hardware and software. ..

(3) Overall Operation Next, the operation of each device constituting the air conditioner 1 controlled by the control device 50 when the air conditioner 1 performs cooling, dehumidification, heating, etc. will be described.

<Cooling / dehumidifying operation>
When the cooling / dehumidifying operation is instructed by an instruction from an operation switch (not shown) or the like, the control device 50 controls the refrigerant flow direction switching mechanism 230 so that the operating state of the air conditioning device 1 becomes the first operating state. (See the broken line in the refrigerant flow direction switching mechanism 230 in FIG. 4). Further, the control device 50 starts the operation of the compressor 220, the user side fan 30, and the heat source side fan 40, and operates the compressor 220, the expansion mechanism 270, the user side fan 30, and the heat source side fan 40. Control as appropriate.

As a result of controlling the operation of each device constituting the air conditioner 100 in this way, the low-pressure gas refrigerant in the refrigerating cycle in the refrigerant circuit 20 is sucked into the compressor 220 and compressed, and the high-pressure gas in the refrigerating cycle is compressed. It becomes a refrigerant. The gas refrigerant compressed by the compressor 220 is sent to the heat source side heat exchanger 260 through the refrigerant flow direction switching mechanism 230. The high-pressure gas refrigerant in the refrigeration cycle sent to the heat source side heat exchanger 260 is cooled by exchanging heat with the air supplied by the heat source side fan 40 in the heat source side heat exchanger 260 that functions as a condenser. It condenses and becomes a high-pressure liquid refrigerant. On the other hand, the air heated by the heat source side heat exchanger 260 that functions as a condenser is discharged to the outside of the casing 10 from the exhaust port 120a of the top plate 120 of the casing 10. The liquid refrigerant condensed in the heat source side heat exchanger 260 is decompressed by the expansion mechanism 270, expanded, and sent to the user side heat exchanger 250. The low-pressure gas-liquid two-phase refrigerant sent to the user-side heat exchanger 250 evaporates by exchanging heat with the air supplied by the user-side fan 30 in the user-side heat exchanger 250 that functions as an evaporator. However, it becomes a low-pressure gas refrigerant. The low-pressure gas refrigerant is sent to the compressor 220 through the second gas connecting pipe 210e and the suction pipe 210a, and is sucked into the compressor 220 again. On the other hand, the air cooled by the utilization side heat exchanger 250 functioning as an evaporator is blown out to the outside of the casing 10 through the outlet 111a of the front side decorative plate 111.

<Heating operation>
When the heating operation is instructed by an instruction from an operation switch (not shown) or the like, the control device 50 controls the refrigerant flow direction switching mechanism 230 so that the operating state of the air conditioning device 1 becomes the second operating state ((not shown). See the solid line in the refrigerant flow direction switching mechanism 230 in FIG. 4). Further, the control device 50 starts the operation of the compressor 220, the heat source side fan 40, and the user side fan 30, and operates the compressor 220, the expansion mechanism 270, the heat source side fan 40, and the user side fan 30. Control as appropriate.

As a result of controlling the operation of each device constituting the air conditioner 1 in this way, the gas refrigerant in the low-pressure refrigeration cycle in the refrigerant circuit 20 is sucked into the compressor 220 and compressed, and the high-pressure gas in the refrigeration cycle It becomes a refrigerant. The gas refrigerant compressed by the compressor 220 is sent to the user side heat exchanger 250 through the refrigerant flow direction switching mechanism 230. The high-pressure gas refrigerant in the refrigeration cycle sent to the user-side heat exchanger 250 is cooled by exchanging heat with the air supplied by the user-side fan 30 in the user-side heat exchanger 250 that functions as a condenser. It condenses and becomes a high-pressure liquid refrigerant. On the other hand, the air heated by the utilization side heat exchanger 250 that functions as a condenser is blown out of the casing 10 through the outlet 111a of the front side decorative plate 111. The liquid refrigerant condensed in the user-side heat exchanger 250 is decompressed by the expansion mechanism 270 to expand, and is sent to the heat source-side heat exchanger 260. The low-pressure gas-liquid two-phase state refrigerant sent to the heat source side heat exchanger 260 evaporates by exchanging heat with the air supplied by the heat source side fan 40 in the heat source side heat exchanger 260 that functions as an evaporator. However, it becomes a low-pressure gas refrigerant. The low-pressure gas refrigerant is sent to the compressor 220 through the first gas connecting pipe 210c and the suction pipe 210a, and is sucked into the compressor 220 again. On the other hand, the air cooled by the heat source side heat exchanger 260 that functions as an evaporator is discharged to the outside of the casing 10 from the exhaust port 120a of the top plate 120 of the casing 10.

(4) Features (4-1)
The air conditioner 1 includes a user-side fan 30 and a user-side heat exchanger 250. The user-side fan 30 has a fan rotor 310 and a fan motor 320 for driving the fan rotor 310. The user-side heat exchanger 250 has a heat transfer tube 251 having a plurality of straight portions 251a and support members 252a to d supporting the ends of the plurality of straight portions 251a. The support members 252a to 252 extend in the vertical direction. The fan motor 320 is fixed to the first motor fixing member 171 supported by the support members 252a and c.

In the air conditioner 1, the user side fan 30 is fixed to the first motor fixing member 171 supported by the support members 252a and c of the user side heat exchanger 250, so that the bottom portion for fixing the user side fan 30 is used. There is no need to separately provide a member extending from. Therefore, even when the user-side fan 30 is provided above the casing 10, the stability of the user-side fan 30 is prevented from deteriorating.

Further, even if other equipment to be maintained (for example, a compressor 220, a heat source side fan 40, etc.) is arranged below the user side fan 30, the support members 252a and c are the equipment below the user side fan 30. Does not block access to. Therefore, the deterioration of maintainability is suppressed.

(4-2)
The first motor fixing member 171 has a first fixing portion 171a and a second fixing portion 171b. The first fixing portion 171a is supported by the support members 252a and c, and extends in the extending direction of the straight portion 251a. The second fixing portion 171b is fixed to the first fixing portion, and the fan motor 320 is fixed to the second fixing portion 171b.

In the air conditioner 1, by providing the first fixing portion 171b, the fixing position of the user-side fan 30 in the extending direction of the straight portion 251a can be appropriately changed.

(4-3)
The air conditioner 1 further includes connecting members 190a and b, and second motor fixing members 172a and b. The connecting members 190a and b connect the support members 252a and c that support one end of the plurality of straight portions 251a and the support members 252b and d that support the other end. The second motor fixing members 172a and b connect the connecting members 190a and b and the first motor fixing member 171.

By providing the second motor fixing members 172a and 172b, the air conditioner 1 can suppress the vibration of the user-side fan 30 during driving, and can support the user-side fan 30 more firmly.

(4-4)
The air conditioner 1 further includes a compressor 220 constituting the refrigerant circuit 20 together with the user side heat exchanger 250. The user-side fan 30 is arranged above the compressor 220.

In the air conditioner 1, even if the compressor 220 is arranged below the user-side fan 30, the support members 252a to 252c do not hinder access to the compressor 220. Therefore, it is possible to prevent the compressor 220 from being deteriorated in maintainability.

(4-5)
The first motor fixing member 171 has a vibration absorbing member 171c. The first motor fixing member 171 contacts the user side heat exchanger 250 via the vibration absorbing member 171c.

In the air conditioner 1, a portion supporting the first motor fixing member 171 is provided by bringing the first motor fixing member 171 into contact with the utilization side heat exchanger 250 via the vibration absorbing member 171c which is a member that absorbs vibration. increase. Therefore, the vibration of the first motor fixing member 171 due to the driving of the user-side fan 30 is suppressed. In particular, in the air conditioner 1, the first motor fixing member 171 is fixed to the first fixing portion 171a extending in the extending direction of the straight portion 251a of the utilization side heat transfer tube 261 and the end portions of the first fixing portion 171a. 2 Fixed portion 171b and the like. Therefore, the operation of the fan motor 320 causes vibration in the left-right direction, which may cause the user-side fan 30 and the first motor fixing member 171 to sway in the left-right direction. On the other hand, in the air conditioner 1, since the vibration absorbing member 171c comes into contact with the heat exchanger 250 on the utilization side, the vibration of the first motor fixing member 171 in the left-right direction is suppressed.

(5) Modification Example Next, a modification of the above embodiment will be shown. It should be noted that the partial configuration or the entire configuration of each modification shown here may be applied in combination with other modifications to the extent that there is no contradiction.

(5-1) Modification A
The user-side heat exchanger 250 and the heat source-side heat exchanger 260 are not limited to the above-mentioned form. For example, the utilization side heat transfer tube 251 of the utilization side heat exchanger 250 and / or the heat source side heat transfer tube 261 of the heat source side heat exchanger 260 may be arranged in a U shape in a plan view.

In this case, the utilization side heat transfer tube 251 and / or the heat source side heat transfer tube 261 are supported by two support members 252a, c arranged on the front side in the casing 10.

(5-2) Modification B
In the above embodiment, the user side fan 30 is supported by the support members 252a and c via the first motor fixing member 171 and the second motor fixing members 172a and b, but the heat source side fan 40 is also disclosed. , The support members 252a to 252 may be supported via the first motor fixing member 171 and the second motor fixing members 172a and b.

(5-3) Modification C
The first motor fixing member 171 is not limited to the above-mentioned form. For example, the first motor fixing member 171 may have only a columnar member that is directly supported by the front support members 252a and c and extends in the left-right direction like the second fixing portion 171b.

(5-4) Modification D
The fixing portion of the first motor fixing member 171 is not limited to the above-mentioned form. For example, it may be a member extending forward from the front support members 252a and c.

(5-5) Modification E
The air conditioner 1 does not have to have the second motor fixing members 172a, b. In this case, the user-side fan 30 is supported only by the first motor fixing member 171.

Although the embodiments of the present disclosure have been described above, it will be understood that various modifications of the embodiments and details are possible without departing from the spirit and scope of the present disclosure described in the claims. ..

1 Air conditioner 171 1st motor fixing member 171a 1st fixing part 171b 2nd fixing part 171c Vibration absorbing member 172a, b 2nd motor fixing member 190a, b Connecting member 20 Refrigerant circuit 220 Compressor 250 Heat exchanger 250a, 260a 1st heat exchange part 250b, 260b 2nd heat exchange part 251 Heat transfer tube 251a Straight part 252a to d Support member 253 1st surface 254 2nd surface 255 3rd surface 30 User side fan 310 Fan rotor 320 Fan motor

International Publication No. 2002/07535

Claims (7)

A fan (30) having a fan rotor (310) and a fan motor (320) for driving the fan rotor, and a fan (30).
A heat transfer tube (251) having a plurality of straight portions (251a), and a heat exchanger (250) having a support member (252) for supporting the ends of the plurality of straight portions.
Equipped with
The support member extends in the vertical direction and
The fan motor is fixed to a first motor fixing member (171) supported by the support member.
Air conditioner (1). The first motor fixing member is
A first fixing portion (171a) supported by the support member and extending in the extending direction of the straight portion,
A second fixing portion (171b) fixed to the first fixing portion and to which the fan motor is fixed,
Have,
The air conditioner according to claim 1. The heat exchanger is
The first heat exchange section (250a, 260a) and
The second heat exchange section (250b, 260b) and
Including
The support member is
A first support member (252a) that supports the first heat exchange portion, and
A second support member (252c) that supports the second heat exchange portion, and
Have,
The first heat exchange unit and the second heat exchange unit are arranged so as to face each other.
The first motor fixing member is supported by the first support member and the second support member.
The air conditioner according to claim 1 or 2. The support member is
A third support member (252a, c) that supports one end of the plurality of straight portions, and
A fourth support member (252b, d) that supports the other end, and
Have,
Connecting members (190a, b) connecting the third support member and the fourth support member,
A second motor fixing member (172a, b) connecting the connecting member and the first motor fixing member,
Further prepare,
The air conditioner according to claim 1 or 2. The support member is
A first surface (252a) that supports the end of the heat transfer tube and extends in the vertical direction,
A second surface (252b) extending in the vertical direction formed on the edge of the first surface so as to intersect the first surface.
Have,
The first motor fixing member is supported by the second surface.
The air conditioner according to any one of claims 1 to 4. A compressor (220) constituting the refrigerant circuit (20) is further provided together with the heat exchanger.
The fan is located above the compressor,
The air conditioner according to any one of claims 1 to 5. The first motor fixing member has a vibration absorbing member (171c).
The first motor fixing member contacts the heat exchanger via the vibration absorbing member.
The air conditioner according to any one of claims 1 to 6.

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