Patent Grant
11879648
This application is a U.S. national stage application of International Patent Application No. PCT/JP2018/003764 filed on Feb. 5, 2018, the disclosure of which is incorporated herein by reference.
The present invention relates to an outdoor machine and an air conditioner.
An outdoor machine to be used for a conventional air conditioner or the like includes therein a control board and a heat radiation part. The control board controls the operation of a compressor, a blower, and the like. The heat radiation part is for radiating heat generated by an electric component mounted on the control board. The heat radiation part includes a base connected to the control board and a plurality of fins extending from the base. Furthermore, there are cases where a heat radiation part includes an air guide that is provided on the end side of the plurality of fins to form a ventilation flue surrounded by the base, the plurality of fins, and the air guide such that air flows through the ventilation flue to efficiently cool the entire heat radiation part (for example, Patent Literature 1).
In an outdoor machine including a bell mouth provided at an outlet formed in a front panel, a heat radiation part is disposed adjacent to the front panel and the bell mouth in a space in which a blower is disposed. Accordingly, a closed space is formed by the leeward end of the heat radiation part, a partition plate, the front panel, and the bell mouth. The partition plate divides a space inside the outdoor machine into a space in which a compressor is disposed and the space in which the blower is disposed. Thus, air stagnation (high-pressure portion) occurs on the leeward side of the heat radiation part. As a result, there has been a problem in that even if the air guide is provided, sufficient air does not flow through the ventilation flue, so that the cooling capacity of the heat radiation part cannot be obtained sufficiently.
The present invention has been made to solve the above-described problem, and an object of the present invention is to provide an outdoor machine that improves the cooling capacity of a heat radiation part.
An outdoor machine according to the present invention includes: a housing that includes a front panel in which an outlet is formed, a blower disposed in the housing, a bell mouth disposed in an outer periphery of the blower and connected to the outlet; a control board on which an electric component is mounted, the control board being provided in the housing, a heat radiation part that radiates heat generated by the electric component; and vent deflector that covers the heat radiation part, and forms a ventilation flue through which air generated by the blower flows in the heat radiation part. The vent deflector is not provided in a region between a virtual plane and the front panel, and the virtual plane covers an entire periphery of an edge of the bell mouth and extends in parallel with the front panel.
In an outdoor machine according to the present invention, the outlet of a ventilation flue formed by a heat radiation part and a vent deflector is located on the windward side with respect to a bell mouth. Therefore, the ventilation flue is opened in a space where air stagnation is less likely to occur and pressure loss is low. Thus, air can easily flow through the ventilation flue. As a result, the flow velocity of air flowing through the ventilation flue is increased, so that the cooling capacity of the heat radiation part can be improved.
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following drawings, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated. Note that arrows in the drawings indicate directions of air flow. Furthermore, in the following drawings including
A schematic configuration of an outdoor machine according to a first embodiment of the present invention will be described with reference to
The outdoor machine 1 is applied to, for example, an air conditioner, and includes a housing 2, a heat exchanger 22, a compressor 14, a blower 13, and an electric component box 15. The housing 2 forms an outer shell. The heat exchanger 22, the compressor 14, the blower 13, and the electric component box 15 are provided in the housing 2.
The housing 2 includes the front panel 3, a rear panel 8, a left side panel 4, a right side panel 5, a bottom panel 6, and a top panel 7. The front panel 3 forms the front surface of the housing 2. The rear panel 8 faces the front panel 3, and forms the back surface of the housing 2. The left side panel 4 forms the left side surface of the housing 2 when the housing 2 is viewed from the front. The right side panel 5 faces the left side panel 4, and forms the right side surface of the housing 2 when the housing 2 is viewed from the front. The bottom panel 6 forms the bottom surface of the housing 2. The top panel 7 faces the bottom panel 6, and forms the top surface of the housing 2. Note that the front panel 3 and the left side panel 4 may be integrally formed with a single part.
A circular opening 3a is formed in the front panel 3. An opening 4a is formed in the left side panel 4. An opening 8a is formed in the rear panel 8. The openings 4a and 8a are for taking in air from the outside to the inside of the housing 2. The opening 3a is for discharging air from the inside of the housing 2 to the outside, and is an air outlet.
A bell mouth 9 is provided at the opening 3a of the front panel 3. The bell mouth 9 has an annular shape, and protrudes from the peripheral edge of the opening 3a into the housing 2. An edge 9a of the bell mouth 9 protruding into the housing 2 protrudes in parallel with the front panel 3 when viewed from above. The blower 13 is provided inside the bell mouth 9. The bell mouth 9 has an annular shape along the rotation direction of the blower 13 in such a way as to surround the outer periphery of the blower 13, and aligns the flow of air generated by the blower 13. Note that the front panel 3 corresponds to a panel in the present invention.
The heat exchanger 22 includes a plurality of stacked fins and a heat transfer tube that penetrates the fins. The heat exchanger 22 performs heat exchange between a refrigerant passing through the heat transfer tube and the air. The heat exchanger 22 is bent in an L-shape when viewed from above, and is disposed along the rear panel 8 and the left side panel 4. The compressor 14 is a device that compresses and discharges the refrigerant, and is disposed in a machine chamber 12 to be described below.
The blower 13 is disposed between the front panel 3 and the rear panel 8. The blower 13 faces the opening 3a. The blower 13 is a blowing means that includes, for example, a propeller fan and a fan motor. The blower 13 generates an airflow from the opening 8a of the rear panel 8 and the opening 4a of the left side panel 4 to the opening 3a of the front panel 3, so that air circulation is generated for efficient heat exchange in the heat exchanger 22. Furthermore, the compressor 14 and a refrigerant pipe (not illustrated) connected to the compressor 14 are provided in the machine chamber 12.
A partition plate 10 divides the inside of the housing 2 of the outdoor machine 1 into a blower chamber 11 and the machine chamber 12. The blower chamber 11 is a space formed by the front panel 3, the left side panel 4, the bottom panel 6, the top panel 7, the rear panel 8, and the partition plate 10. The machine chamber 12 is a space formed by the front panel 3, the right side panel 5, the bottom panel 6, the top panel 7, the rear panel 8, and the partition plate 10. The opening 3a, the opening 4a, and the opening 8a are formed in positions where the opening 3a, the opening 4a, and the opening 8a face the blower chamber 11.
The electric component box 15 is for controlling the components of the air conditioner, and is disposed above the partition plate 10 in such a way as to straddle the blower chamber 11 and the machine chamber 12. The electric component box 15 accommodates a control board 16 with an electric component 17 attached thereto. A heat radiation part 18 that radiates heat generated by the electric component 17 is attached to the electric component 17. In addition, a part of the heat radiation part 18 is covered with a vent deflector 20.
The electric component 17 is for controlling the components of the air conditioner, and includes, for example, a semiconductor element. In the case where AC power is input, the control board 16 includes a converter unit and an inverter unit that operate as follows. The converter unit converts AC power into DC power. The inverter unit converts DC power into AC power to drive a compressor motor of the compressor 14 or the fan motor of the blower 13.
The converter unit includes, for example, a diode bridge module for rectification, a switching element for causing DC voltage to be variable when AC power is converted into DC power, or a backflow prevention element for preventing current backflow to a power source side due to the boosting of the DC voltage. The inverter unit includes, for example, an inverter module including six switching elements. Note that the types of semiconductor element are not limited thereto, and may be determined according to a circuit configuration.
As illustrated in
The lower part of the heat radiation part 18 is covered with the vent deflector 20, so that a space surrounded by the heat radiation part 18 and the vent deflector 20 is formed as a ventilation flue 23. As illustrated in
When viewed from above, the heat radiation part 18 is disposed closer to the front panel 3 than to the rear panel 8 such that a leeward end portion 18d facing the front panel 3 side is located adjacent to the front panel 3 and the bell mouth 9. Specifically, assume that a virtual plane S is defined as a virtual plane that extends in parallel with an inner surface 3b of the front panel 3 and covers the entire periphery of the edge 9a of the bell mouth 9 in such a way as to close the bell mouth 9, and that a region R is defined as a region between the virtual plane S and the front panel 3. Then, the leeward end portion 18d of the heat radiation part 18 is located in the region R.
Next, the configuration of the heat radiation part 18 will be described with reference to
As illustrated in
The base 19 is a rectangular plate-like member attached to the electric component 17 and extending in the Y direction. The fin 21 has a rectangular shape with a longitudinal length equal to the longitudinal length of the base 19. A plurality of the fins 21 is formed in the lateral direction (X direction) of the base 19.
Each of the plurality of fins 21 has a windward end portion 21c and a leeward end portion 21d. The windward end portion 21c is an end located on the windward side in the longitudinal direction. The leeward end portion 21d is an end located on the leeward side in the longitudinal direction. The windward end portions 21c of the plurality of fins 21 correspond to a windward end portion 18c of the heat radiation part 18. The leeward end portions 21d of the plurality of fins 21 correspond to the leeward end portion 18d of the heat radiation part 18.
The vent deflector 20 includes a flat surface portion 20a and an inclined portion 20b. The flat surface portion 20a is a rectangular plate-like member facing the base 19 and extending in the Y direction, and covers the ends of the plurality of fins 21 except portions thereof located on the leeward side of the heat radiation part 18. The inclined portion 20b is a plate-like member connected to the windward side of the flat surface portion 20a, and is inclined in the gravity direction (Z direction) with respect to the flat surface portion 20a.
The windward end portion of the inclined portion 20b corresponds to a windward end portion 20c of the vent deflector 20. The leeward end portion of the flat surface portion 20a corresponds to a leeward end portion 20d of the vent deflector 20. The ventilation flue 23 is formed such that the ventilation flue 23 extends from the rear panel 8 toward the front panel 3. The blower 13 blows air through the ventilation flue 23 in the Y direction. The inclined portion 20b of the vent deflector 20 can increase the flow velocity of air with respect to the ventilation flue 23.
The windward end portion 20c of the vent deflector 20 is located on the windward side with respect to the windward end portions 21c of the plurality of fins 21. A part of the leeward side of the plurality of fins 21 of the heat radiation part 18 is not covered with the vent deflector 20 and is left open.
The windward end portion 18c of the heat radiation part 18 (the windward end portion 21c of the fin 21) is an inlet 24 for allowing air to flow into the ventilation flue 23. The leeward end portion 18d of the heat radiation part 18 (the leeward end portion 21d of the fin 21) is an outlet 25a for the air to flow out from the ventilation flue 23. The part of the leeward side of the plurality of fins 21, not covered with the vent deflector 20, also forms an outlet 25b for the air to flow out from the ventilation flue 23. An outlet 25 includes the outlet 25a and the outlet 25b. The outlet 25a is the leeward end portion of the heat radiation part 18. The outlet 25b is formed with the end portions of the plurality of fins 21 not covered with the vent deflector 20.
As illustrated in
In addition, the windward end portion 20c of the vent deflector 20 is located on the windward side with respect to the windward end portion 18c of the heat radiation part 18. The leeward end portion 20d of the vent deflector 20 is located on the windward side with respect to the virtual plane S in the Y direction, and is not located in the region R.
Next, the flow of air in the heat radiation part 18 will be described. Note that in order to facilitate understanding of the effect of the heat radiation part 18, the configuration of a heat radiation part of a comparative example will be described first below. After that, the flow of air in the heat radiation part 18 according to the present embodiment, that is, the first embodiment will be described. Note that when illustrating the comparative example, a constituent element of the comparative example is denoted by a reference numeral obtained as a result of adding “1000” to a reference numeral of a constituent element of the present embodiment, that is, the first embodiment, corresponding to the constituent element of the comparative example.
The configuration of a heat radiation part 1018 of the comparative example will be described with reference to
As illustrated in
Next, the flow of air in the heat radiation part 1018 of the comparative example will be described. Air supplied to the heat radiation part 1018 by the blower 13 flows into the ventilation flue 1023 from the inlet 1024. At this time, a part of the air supplied to the heat radiation part 1018 is guided to the inlet 1024 by an inclined portion 1020b of the vent deflector 1020. The air that has passed through the ventilation flue 1023 flows out of the ventilation flue 1023 from the outlet 1025 (outlet 1025a).
Air that has flowed in from the inlet 1024 of the heat radiation part 1018 flows out from the outlet 1025 toward the front panel 3 of the housing 2. Meanwhile, a space from which the air has flowed out is a closed space surrounded by the front panel 3, the top panel 7, the bell mouth 9 protruding into the housing 2, the partition plate 10 dividing the inside of the housing 2 into the blower chamber 11 and the machine chamber 12, and the outlet 1025 of the heat radiation part 1018. Therefore, the pressure of the closed space is high. Meanwhile, pressure in the heat radiation part 1018, on the outlet 1025 side, is lower than that in the space located on the leeward side with respect to the virtual plane S, in which air flows from the rear panel 8 toward the opening 3a provided in the front panel 3. Thus, it becomes difficult for air to flow through the ventilation flue 1023.
Meanwhile, in the heat radiation part 18 according to the present embodiment, that is, the first embodiment, the leeward end portion 20d of the vent deflector 20 is located on the windward side with respect to the virtual plane S. As a result, the outlet 25b that is exposed without being covered with the vent deflector 20 is formed on the windward side with respect to the virtual plane S and below the ventilation flue 23 in the Z direction, and functions as a part of the outlet 25. The outlet 25b communicates with a space that is not blocked by the bell mouth 9 and has a low pressure.
Therefore, air that has passed through the ventilation flue 23 flows out from the outlet 25 (outlet 25b) into the space that is not blocked by the bell mouth 9 and has a low pressure. Therefore, the air does not stagnate at the outlet 25, and sufficient air flows through the ventilation flue 23, so that the cooling capacity of the heat radiation part 18 can be improved.
As a result of improving the cooling capacity of the heat radiation part 18, the electric component 17 mounted on the control board 16 can be efficiently cooled to secure the life of the control board 16 and the electric component 17. The electric component 17 is, for example, an electrolytic capacitor. An electrolytic capacitor contains an electrolytic solution, and is thus easily affected by ambient temperature. The life of an electrolytic capacitor is determined by ambient temperature. When the ambient temperature drops by 10 degrees, the life thereof doubles.
Note that it is also conceivable that as a method for improving the flow of air in the ventilation flue, there is adopted a method for eliminating the closed space by making a hole in the front panel to provide an exhaust path through which air flows and is let out of the front panel. However, when a wide-gap semiconductor of GaN, SiC, or the like is mounted on the control board, there is a possibility that radiation noise leaks out of the hole made in the front panel to cause a malfunction of an electrical device adjacent to the outdoor machine. This is because the radiation noise of wide-gap semiconductors is higher than that of conventional semiconductors. Therefore, especially when the wide-gap semiconductor is mounted on the control board, it is not possible to adopt the method for making a hole in the front panel to eliminate the closed space, and it is preferable to adopt the method according to the present invention, for improving the airflow in the ventilation flue without making a hole in the front panel.
Next, a first modified example of the first embodiment will be described with reference to
As illustrated in
Note that the shape of the outlet 25c is not limited to a circle, and may be another shape such as a quadrangle or a triangle. Furthermore, the number of the outlets 25c may be one or more, and the outlet 25c may be opened only on the windward side with respect to the virtual plane S. Moreover, the vent deflector 20 may cover only a part of the heat radiation part 18 while leaving the leeward side of the heat radiation part 18 open.
Next, the outdoor machine 1 according to a second embodiment of the present invention will be described with reference to
As illustrated in
Furthermore, the vent deflector 30 includes a windward end portion 30c and a leeward end portion 30d. The windward end portion 30c is the end of the inclined portion 30b. The windward end portion 30c is located on the windward side with respect to the windward end portions 21c of the plurality of fins 21. The leeward end portion 30d is the end of the flat surface portion 30a.
Furthermore, as illustrated in
The distance from the windward end portion 30c to the leeward end portion 30d of the vent deflector 30 is shortest when measured between the second windward side surface end portion 30f and the second leeward side surface end portion 30h, and is longest when measured between the first windward side surface end portion 30e and the first leeward side surface end portion 30g. Thus, the distance from the windward end portion 30c to the leeward end portion 30d of the vent deflector 30 gets longer as a measuring point on the leeward end portion 30d moves from the second leeward side surface end portion 30h to the first leeward side surface end portion 30g.
Broken lines illustrated in
Moreover, the first leeward side surface end portion 30g is located on the leeward side with respect to the virtual plane S, and the second leeward side surface end portion 30h is located on the windward side with respect to the virtual plane S. Furthermore, the first leeward side surface end portion 30g and the second leeward side surface end portion 30h are connected in a straight line. The flat surface portion 30a of the vent deflector 30 is formed such that the leeward end portion 30d intersects the virtual plane S when viewed from above. That is, a part of the outlet 25 (outlet 25b) of the heat radiation part 18 is formed on the windward side with respect to the virtual plane S.
The second leeward side surface end portion 30h is located on the windward side with respect to the virtual plane S. Therefore, the outlet of a ventilation flue 23 is located on the windward side with respect to the bell mouth 9, and is opened in a space where air stagnation is less likely to occur and pressure loss is low. Thus, air can easily flow through the ventilation flue 23. As a result, the flow velocity of air flowing through the ventilation flue 23 is increased, so that the cooling capacity of the heat radiation part 18 can be improved.
Furthermore, the leeward end portion 30d of the vent deflector 30, formed obliquely to the leeward end portions 21d of the plurality of fins 21 includes a plurality of the ventilation flues 23 with different lengths. Among the plurality of ventilation flues 23, a long ventilation flue located on the first leeward side surface end portion 30g side is referred to as a first ventilation flue 23a, and a short ventilation flue located on the second leeward side surface end portion 30h side is referred to as a second ventilation flue 23b. Then, the electric components 17 are disposed at positions where the electric components 17 face the second ventilation flue 23b.
The flow velocity of air flowing through the ventilation flue 23 decreases as the position of the outlet 25 gets closer to the front panel 3. Therefore, the flow velocity of air in the second ventilation flue 23b is higher than the flow velocity thereof in the first ventilation flue 23a. The electric components 17 are disposed at the positions where the electric components 17 face the second ventilation flue 23b. Therefore, the flow velocity of air flowing through the ventilation flue 23 increases at positions corresponding to the electric components 17. As a result, the electric components 17 can be efficiently cooled.
Therefore, it is possible to efficiently cool the electric components 17 by disposing all the electric components 17 connected to the base 19 on the second leeward side surface end portion 30h side. Note that, of the electric components 17, those with higher heat loss may be disposed on the second leeward side surface end portion 30h side, and those with lower heat loss may be disposed on the first leeward side surface end portion 30g side. As a result of arranging the electric components 17 in this way, the electric components 17 with higher heat loss can be efficiently cooled.
Furthermore, the electric components 17 may be arranged in descending order of heat loss from the windward side toward the leeward side on the second leeward side surface end portion 30h. As a result of arranging the electric components 17 in this way, the electric components 17 with higher heat loss can be efficiently cooled.
Next, a first modified example of the second embodiment will be described. In the second embodiment described above, an example has been described in which the leeward end portion 30d of the vent deflector 30 has a linear shape and the vent deflector 30 has a trapezoidal shape when viewed from above. However, as illustrated in
As illustrated in
Next, a second modified example of the second embodiment will be described. In the second embodiment described above, an example has been described in which the leeward end portion 30d of the vent deflector 30 has a linear shape and the vent deflector 30 has a trapezoidal shape when viewed from above. However, as illustrated in
As illustrated in
Also in the heat radiation part 18 of each of the first and second modified examples of the second embodiment, the flow velocity of air flowing through the ventilation flue 23 corresponding to the second leeward side surface end portion 30h increases. Thus, the electric components 17 disposed on the second leeward side surface end portion 30h side can be efficiently cooled. Furthermore, as a result of disposing the electric components 17 in the center of the heat radiation part 18 in the X direction, heat generated in the electric components 17 is easily transferred to the entire heat radiation part 18, so that the electric components 17 can be efficiently cooled.
Note that in the second embodiment described above, an example has been described in which the first leeward side surface end portion 30g of the vent deflector 30 is located on the leeward side with respect to the virtual plane S, but the first leeward side surface end portion 30g may be located on the windward side with respect to the virtual plane S. With such a configuration, the area of the outlet 25b further increases, so that air easily flows into a space where pressure loss is smaller. Thus, air easily flows through the ventilation flue 23.
Next, the outdoor machine 1 according to a third embodiment of the present invention will be described with reference to
As illustrated in
The base 190 is a rectangular plate-like member attached to the electric component 17 and extending in the Y direction. The fin 210 has a rectangular shape with a longitudinal length equal to the longitudinal length of the base 190. A plurality of the fins 210 is formed in the lateral direction (X direction) of the base 190.
Each of the plurality of fins 210 has a windward end portion 210c and a leeward end portion 210d. The windward end portion 210c is an end located on the windward side in the longitudinal direction. The leeward end portion 210d is an end located on the leeward side in the longitudinal direction. The windward end portions 210c of the plurality of fins 210 correspond to a windward end portion 180c of the heat radiation part 180. The leeward end portions 210d of the plurality of fins 210 correspond to the leeward end portion 180d of the heat radiation part 180.
The vent deflector 200 includes a flat surface portion 200a and an inclined portion 200b provided at the longitudinal end of the flat surface portion 200a. The inclined portion 200b is connected to the windward side of the flat surface portion 200a. The flat surface portion 200a and the inclined portion 200b are integrally formed. The inclined portion 200b is inclined with respect to the flat surface portion 200a in the gravity direction (Z direction). The flat surface portion 200a faces the base 190 in the Z direction.
The vent deflector 200 includes a windward end portion 200c and a leeward end portion 200d. The windward end portion 200c is the end of the inclined portion 200b. The windward end portion 200c is located on the windward side with respect to the windward end portions 210c of the plurality of fins 21. The leeward end portion 200d is the end of the flat surface portion 200a.
As illustrated in
Therefore, air that has passed through the ventilation flue 230 flows out at a position on the windward side with respect to the virtual plane S. Thus, sufficient air flows through the ventilation flue 230 without stagnating at the outlet, so that the cooling capacity of the heat radiation part 180 can be improved.
Furthermore, it is possible to cause air to more easily flow through the ventilation flue 230 and further improve the cooling capacity of the heat radiation part 180 by configuring the windward end portion of the heat radiation part such that a part of the windward end portion is not covered with the vent deflector and providing a second outlet, as set forth in the first and second embodiments.
Note that
Furthermore, similarly, it is possible to cause flow velocity to increase as the distance from the windward end portion 200c to the leeward end portion 200d of the vent deflector 200 decreases and to improve cooling capacity by forming the leeward end portion 200d of the vent deflector 200 obliquely to the leeward end portion 210d or forming the leeward end portion 200d in an arc shape or an L shape as set forth in the second embodiment. That is, it is also possible to implement a configuration in which the above-described embodiments are appropriately combined.
In the first to third embodiments described above, examples have been described in which the plurality of fins 21 and 210 includes plate-like members. However, the shape of the plurality of fins 21 and 210 is not limited thereto. For example, another shape such as a rod-like shape may be adopted.
Furthermore, in the first to third embodiments described above, examples of horizontal placement in which the control board 16 is horizontally placed have been described. However, the control board 16 may be vertically placed in the gravity direction (Z direction). In that case, the plurality of fins 21, 210 extends in the horizontal direction, and the flat surface portions 20a, 30a, and 200a of the vent deflectors 20, 30, and 200 are disposed in such a way as to extend along the Z direction.
Furthermore, in the first to third embodiments described above, examples have been described in which the flat surface portions 20a, 30a, and 200a of the vent deflectors 20, 30, and 200 are connected to the vent deflector side end portions of the plurality of fins 21 and 210. However, there may be a gap between the flat surface portions 20a, 30a, and 200a and the vent deflector side end portions.
Furthermore, in the first to third embodiments described above, examples in which the vent deflectors 20, 30, and 200 respectively include the inclined portions 20b, 30b, and 200b have been described. However, the vent deflectors 20, 30, and 200 may be configured such that the vent deflectors 20, 30, and 200 do not include the inclined portion 20b, 30b, or 200b and that the entire vent deflectors 20, 30, and 200 are formed in a planar shape. In this case, the windward end portions of the flat surface portions 20a, 30a, and 200a serve as the windward end portions 20c, 30c, and 200c of the vent deflectors 20, 30, and 200, respectively. At this time, the windward end portions 20c, 30c, and 200c of the vent deflectors 20, 30, and 200 may be disposed at the same positions in the Y direction as the windward end portions 21c and 210c of the plurality of fins 21 and 210.
Furthermore, in the first to third embodiments described above, examples have been provided in which the bases 19 and 190 are respectively equal in longitudinal length to the fins 21 and 210. However, the plurality of fins 21 and 210 may be configured such that the plurality of fins 21 and 210 is smaller in longitudinal length than the bases 19 and 190, and is provided on the upstream ends or downstream ends of the bases 19 and 190, respectively, so that only the leeward side or windward side is opened.
Note that the outdoor machine 1 according to any of the first to third embodiments described above may be applied to an outdoor machine of a heat pump water heater.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/JP2018/003764 | 2/5/2018 | WO |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2019/150577 | 8/8/2019 | WO | A |
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| 4813345 | Kobayashi | Mar 1989 | A |
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| 20070006610 | Kawasaki | Jan 2007 | A1 |
| 20100294466 | Shimaoka | Nov 2010 | A1 |
| 20140299298 | Kono | Oct 2014 | A1 |
| 20150319885 | Uehara | Nov 2015 | A1 |
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| 2 241 830 | Oct 2010 | EP |
| 2000-161717 | Jun 2000 | JP |
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| 2015-048990 | Mar 2015 | JP |
| Entry |
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| Japanese Office Action dated Mar. 25, 2021, issued in corresponding Japanese Patent Application No. 2019-568542 (and English Machine Translation). |
| Chinese Office Action dated Apr. 2, 2021, issued in corresponding Chinese Patent Application No. 201880088196.0 (and English Machine Translation). |
| Office Action dated Aug. 31, 2021, issued in corresponding Indian Patent Application No. 202027032546. |
| International Search Report of the International Searching Authority dated May 1, 2018 for the corresponding International application No. PCT/JP2018/003764 (and English translation). |
| Number | Date | Country | |
|---|---|---|---|
| 20210123612 A1 | Apr 2021 | US |
