JP2018185100A - Outdoor unit of air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an outdoor unit of an air conditioner in which an outside air temperature sensor can accurately detect an outdoor air temperature even if there is a shield around the outdoor unit.SOLUTION: An outdoor unit 10 of an air conditioner comprises an air conditioner body, an outside air temperature sensor provided outside the air conditioner body, and a cover 20 that includes an opening in a lower part and covers the outside air temperature sensor. In the cover 20, a side surface is shielded, or a portion of the side surface is opened, or a portion of an upper surface is opened, or the upper surface is tilted.SELECTED DRAWING: Figure 8

Description

  Embodiments described herein relate generally to an outdoor unit of an air conditioner.

  An outdoor unit of an air conditioner detects an outside air temperature by an outside air temperature sensor provided on the outside of the outdoor unit body, and controls driving of a blower, a compressor, etc. according to the detected outside air temperature (for example, patents) Reference 1).

JP 2006-2000874 A

  However, when there is a shield around the outdoor unit, for example, when there is a wall on the back of the outdoor unit, or when a snow hood is attached to the outdoor unit, hot air around the outdoor temperature sensor is used. Is likely to stagnate and the outside air temperature sensor may not be able to accurately detect the outside air temperature.

  Therefore, an outdoor unit for an air conditioner is provided in which an outside air temperature sensor can accurately detect the outside air temperature even when a shield is present around the outdoor unit.

  The outdoor unit of the air conditioner according to the present embodiment includes an outdoor unit body, an outside air temperature sensor, and a cover. The outside air temperature sensor is provided outside the outdoor unit main body. The cover has an opening in the lower part and covers the outside air temperature sensor.

External appearance perspective view which shows schematically the structural example of the outdoor unit of the air conditioner which concerns on this embodiment The perspective view which shows schematically the example of an internal structure of the outdoor unit of an air conditioner Side view schematically showing a configuration example of an outdoor unit The perspective view which expands and shows the cover provided in the back surface of an outdoor unit main body, and its periphery Rear view schematically showing a cover configuration example FIG. 5 is a longitudinal side view schematically showing an example of a cover and an internal configuration along the line F6-F6 in FIG. Side view schematically showing a cover configuration example The figure which shows an example of the state in which a shield exists in the back surface of an outdoor unit main body The figure which shows an example of the state in which the hood was attached to the back of the outdoor unit main body

  Hereinafter, a plurality of embodiments according to an outdoor unit of an air conditioner will be described with reference to the drawings. In addition, in each embodiment, the substantially same element is attached | subjected with the same code | symbol and the description is abbreviate | omitted.

(First embodiment)
The outdoor unit 10 of the air conditioner illustrated in FIG. 1 includes a plurality of, in this case, two air outlets 12 on the front surface of the outdoor unit main body 11 constituting the outer shell. As illustrated in FIG. 2, the outdoor unit main body 11 includes a blower 13, a heat exchanger 14, a compressor 15, an accumulator 16, an electrical component box 17, and the like. The interior of the outdoor unit body 11 is partitioned into a heat exchange chamber 11A and a machine room 11B. The blower 13 and the heat exchanger 14 are provided in the heat exchange chamber 11A. On the other hand, the compressor 15, the accumulator 16, and the electrical component box 17 are provided in the machine room 11B.

  As illustrated in FIG. 2, a plurality of blowers 13 are provided corresponding to the air outlets 12 on the front surface of the outdoor unit body 11, in this case, two. When these blowers 13 are driven, air outside the outdoor unit body 11 is sucked into the outdoor unit body 11 and exchanges heat with the heat exchanger 14. The air exchanged with the heat exchanger 14 is blown out of the outdoor unit body 11 through the air outlet 12 by the blowing action of the blower 13. The heat exchanger 14, the compressor 15, and the accumulator 16 constitute a known refrigeration cycle 18. The electrical component box 17 stores a control device (not shown) that controls the overall operation of the outdoor unit.

  As illustrated in FIG. 3, a cover 20 is detachably attached to the outside of the outdoor unit body 11, in this case, the outside of the back surface. An outside air temperature sensor 30 is accommodated in the cover 20. In the present embodiment, the cover 20 and the outside air temperature sensor 30 covered by the cover 20 are provided in the upper part of the back surface of the outdoor unit body 11. Note that the mounting positions of the cover 20 and the outside air temperature sensor 30 can be changed as appropriate. For example, any position above the central portion in the vertical direction of the outdoor unit body 11, the vertical direction of the outdoor unit body 11 Can be appropriately installed at any position below the central portion of the outdoor unit body 11 and the central portion of the outdoor unit body 11 in the vertical direction.

  The cover 20 is configured by bending a metal plate material, and integrally includes a cover main body 21 and a fixing piece 22 as illustrated in FIG. The fixing piece 22 protrudes outward from the side surface of the cover main body 21, in this case, to the right of the outdoor unit main body 11, and the end surface of the heat exchanger 14 and the side cover 11 a of the outdoor unit main body 11 It is fixed with a screw or the like (not shown) while being sandwiched between them.

  As illustrated in FIG. 5, when viewed from the back side of the outdoor unit main body 11, the cover main body 21 is configured in a substantially rectangular shape as a whole. As illustrated in FIG. 6, an outside air temperature sensor 30 that detects the temperature of air outside the outdoor unit body 11 is provided inside the cover body 21. In the present embodiment, the outside air temperature sensor 30 is provided in the cover main body 21 in a state of being housed in a case 31 made of, for example, a plastic material. The case 31 that accommodates the outside air temperature sensor 30 is fixed in the cover main body 21 by, for example, a screw (not shown). In the present embodiment, the outside air temperature sensor 30 and the case 31 both have a long shape, and are attached in a state where the longitudinal direction thereof is along the vertical direction of the outdoor unit body 11.

  The cover main body 21 is configured not to cover the entire outside air temperature sensor 30 and the case 31 but to cover a part thereof, in this case, most of the parts except the lower part. That is, the cover main body portion 21 is integrally provided with a main surface portion 211, a right side surface portion 212, a left side surface portion 213, and an upper surface portion 214. Further, the lower part of the cover main body 21 is not shielded, and an opening 215 opened downward is formed.

  The main surface portion 211 is a flat surface portion that is the main body of the cover main body portion 21. The main surface portion 211 is a flat surface portion that has not been drawn. The main surface portion 211 configures the back surface of the cover 20 in a state where the cover 20 is attached to the back surface of the outdoor unit body 11.

  The right side surface 212 configures the right side surface of the cover main body 21 in a state where the cover 20 is attached to the back surface of the outdoor unit main body 11. In this case, the right side surface portion 212 shields the entire right side surface of the cover main body portion 21. Further, the right side surface 212 is a flat surface that is not drawn.

  The left side surface portion 213 configures the left side surface of the cover main body portion 21 in a state where the cover 20 is attached to the back surface of the outdoor unit main body 11. As illustrated in FIG. 7, in this case, the left side surface portion 213 shields a part of the left side surface of the cover main body portion 21, in this case, almost half of the rear side. Further, the left side surface portion 213 is a flat surface portion that has not been drawn. A portion of the left side surface of the cover main body 21 that is not shielded by the left side surface portion 213, in this case, a substantially half portion on the front side, forms an opening 216 that is open to the left.

  The upper surface portion 214 configures the upper surface of the cover main body portion 21 in a state where the cover 20 is attached to the back surface of the outdoor unit main body 11. The upper surface portion 214 shields a part of the upper surface of the cover main body portion 21 instead of the entire upper surface portion, in this case, the rear surface side. Further, the upper surface portion 214 is a flat surface portion inclined forward from the upper end portion of the main surface portion 211, that is, toward the heat exchanger 14 side. A portion of the upper surface of the cover main body 21 that is not shielded by the upper surface portion 214, in this case, the front portion, forms an opening 217 that opens upward. A slit 218 is formed between the right end of the upper surface 214 and the upper end of the right side 212. In addition, a slit 219 is formed between the left end portion of the upper surface portion 214 and the upper end portion of the left side surface portion 213. As described above, a part of the upper surface of the cover body 21 is opened by the opening 217 and the slits 218 and 219.

  Further, the case 31 has a substantially rectangular container shape having a plurality of vent holes 31a, and supports the outside air temperature sensor 30 in the inside thereof. As illustrated by the dashed arrow A in FIG. 6, the air that enters the cover 20 flows toward the heat exchanger 14. In the course of air flow, a part of the air that has entered the cover 20 flows into the case 31 from the vent 31 a and contacts the outside air temperature sensor 30. Thereby, the outside air temperature sensor 30 detects the temperature of the air outside the outdoor unit body 11.

  The case 31 is provided with a guide wall portion 32. The guide wall portion 32 is an example of a guide portion, and is provided so as to shield a part of the opening 215 of the cover 20. In the present embodiment, the guide wall portion 32 is a flat wall portion extending in a direction orthogonal to the longitudinal direction of the outside air temperature sensor 30 in the case 31, that is, in the horizontal direction. As illustrated by a broken line arrow B in FIG. 6, the guide wall portion 32 guides air that is about to enter the cover 20 from the opening 215 to the back side, that is, the outside air temperature sensor 30 side.

  As illustrated in FIG. 8, for example, when the wall W is present on the back surface of the outdoor unit body 11, the temperature of the air on the back side of the outdoor unit body 11 becomes high due to the heat generated by the heat exchanger 14. In this case, hot air, that is, hot air is more likely to stagnate than actual air. According to the outdoor unit 10 of the air conditioner according to the present embodiment, the cover 20 that covers the outside air temperature sensor 30 and the case 31 has the opening 215 in the lower part. According to this configuration, as illustrated by a broken line arrow C in FIG. 8, lower air having a relatively low temperature enters the cover 20 from the opening 215, and as illustrated by a broken line arrow D in FIG. 8. The high-temperature upper air is less likely to enter the cover 20. Therefore, it is difficult for air having a temperature higher than the actual temperature to come into contact with the outside air temperature sensor 30, and the actual outside air temperature is accurately detected by the outside air temperature sensor 30 even when the wall W exists around the outdoor unit 10. be able to.

  Further, the cover 20 is shielded by the right side surface part 212 on one side surface, in this case, the entire right side surface. According to this configuration, high temperature outside air can be prevented from entering from the right side surface of the cover 20, and the outside air temperature sensor 30 can detect the outside air temperature more accurately.

  Further, the cover 20 has the other side surface, in this case, a part of the left side surface thereof shielded by the left side surface portion 213, and the remaining portion is opened by the opening 216. According to this configuration, the flow of air flowing into the opening 216 can reinforce the flow of air toward the heat exchanger 14 in the cover 20. Therefore, the air flow in the cover 20 can be made smooth, that is, the air can be prevented from stagnating in the cover 20, and the outside air temperature sensor 30 detects the outside air temperature more accurately. be able to.

  Further, the upper surface of the cover 20 is shielded by the upper surface portion 214. According to this configuration, high-temperature outside air hardly enters from the upper surface of the cover 20, and the outside air temperature sensor 30 can detect the outside air temperature more accurately.

  The cover 20 has a configuration in which a part of the upper surface is opened by an opening 217 and slits 218 and 219. According to this configuration, the flow of air toward the heat exchanger 14 in the cover 20 can be reinforced by the flow of air flowing in from the opening 217 and the slits 218 and 219. Therefore, the air flow in the cover 20 can be made smooth, that is, the air can be prevented from stagnating in the cover 20, and the outside air temperature sensor 30 detects the outside air temperature more accurately. be able to.

  Further, the cover 20 has an upper surface portion 214 constituting an upper surface inclined toward the heat exchanger 14 side. According to this configuration, the air that has entered the cover 20 is guided by the upper surface portion 214 and easily flows toward the heat exchanger 14. Therefore, the air flow in the cover 20 can be made smooth, that is, the air can be prevented from stagnating in the cover 20, and the outside air temperature sensor 30 detects the outside air temperature more accurately. be able to.

  In addition, the cover 20 includes a guide wall portion 32 that guides air to enter the cover 20 to the outside air temperature sensor 30 side. According to this configuration, air can be efficiently brought into contact with the outside air temperature sensor 30, and the outside air temperature can be detected more accurately.

(Second Embodiment)
The outdoor unit 10 illustrated in FIG. 9 includes a snow hood 40 on the back surface of the outdoor unit body 11. In this case, one hood 40 is provided on the back surface of the outdoor unit body 11. The hood 40 further covers the cover 20 that covers the outside air temperature sensor 30 and the case 31 from the outside. The hood 40 is closed on the back, top, and left and right sides. Further, the hood 40 includes an opening 41 opened downward at a lower portion thereof. When the outdoor unit main body 11 is viewed from the side, the opening 41 is inclined so as to rise from the front side toward the rear side. Air outside the outdoor unit body 11 enters the hood 40 through the opening 41 and reaches the back surface of the outdoor unit body 11.

  The outdoor unit 10 includes a snow hood 50 on the front surface of the outdoor unit body 11. In this case, a plurality of, in this case two, hoods 50 are provided corresponding to the air outlets 12. The hood 50 is closed on the back, top, and left and right sides. The hood 50 is provided with an opening 51 opened downward in the lower portion thereof. When the outdoor unit main body 11 is viewed from the side, the opening 51 is inclined so as to descend from the front side toward the rear side. The air blown out from the air outlet 50 flows out from the opening 51 via the hood 50.

  The hoods 40 and 50 are attached, for example, when the outdoor unit 10 is used in a cold region, and are firmly fixed to the outdoor unit body 11 with, for example, bolts. The hood 40 protects the back side of the outdoor unit body 11 from snow and wind, and the hood 50 protects the air outlet 12 of the outdoor unit body 11 from snow and wind.

  The hood 40 attached to the back surface of the outdoor unit main body 11 serves as a shield existing on the back surface of the outdoor unit 10. Even in this case, the temperature of the air on the back side of the outdoor unit 10, particularly the temperature of the air in the hood 40, becomes high due to the heat generated by the heat exchanger 14, and the high-temperature air particularly in the upper part of the hood 40. That is, air that is hotter than actual air tends to stagnate. According to the outdoor unit 10 of the air conditioner according to the present embodiment, as illustrated by the broken line arrow E in FIG. 9, the lower air having a relatively low temperature is placed in the cover 20 that covers the outside air temperature sensor 30 and the case 31. Enters from the opening 215, and as shown by the broken-line arrow F in FIG. Therefore, even when the outdoor air temperature sensor 30 is less likely to come into contact with air that is hotter than the actual temperature, and the hood 40 is attached to the outdoor unit main body 11, the actual outside air temperature, in this case, the hood, The temperature of the air in 40 can be accurately detected.

(Other embodiments)
The present embodiment is not limited to the above-described embodiment, and can be modified or expanded as follows, for example. For example, this embodiment can be applied not only to the outdoor unit 10 including a plurality of air outlets 12 and a plurality of blowers 13 but also to an outdoor unit including one air outlet 12 and one fan 13. Moreover, the attachment position of the outside air temperature sensor 30, the case 31, and the cover 20 is not limited to the upper part of the back surface of the outdoor unit body 11, and for example, the lower part of the back surface of the outdoor unit body 11, It can be implemented with appropriate changes such as the front side.

  Moreover, if the cover 20 is the structure which has an opening in the lower part, it can change and implement the shape and magnitude | size suitably. Moreover, the cover 20 is good also as a structure which obstruct | occludes all the right and left both sides | surfaces and upper surfaces, and has an opening only in the lower part. Moreover, if the food | hoods 40 and 50 are the structures which have an opening in the lower part, they can change and implement the shape and magnitude | size suitably. Moreover, the food | hoods 40 and 50 are good also as a structure which obstruct | occludes all the right and left both sides | surfaces and upper surfaces, and has an opening only in the lower part, or a structure which has an opening in a part of side surface or upper surface.

  In the present embodiment, not only when the wall W or the hood 40 exists around the outdoor unit main body 11, for example, when a load is loaded around the outdoor unit main body 11, another outdoor unit is added. This is effective when there is a certain shielding object around the outdoor unit main body 11.

  This embodiment is presented as an example and is not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. This embodiment and its modifications are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

In the drawings, 10 is an outdoor unit of an air conditioner, 11 is an outdoor unit body, 20 is a cover, 30 is an outside air temperature sensor, 32 is a guide wall part (guide part), and 40 is a hood.

Claims (8)

The outdoor unit itself,
An outside air temperature sensor provided outside the outdoor unit main body,
A cover having an opening at the bottom and covering the outside air temperature sensor;
An air conditioner outdoor unit comprising:   The outdoor unit of the air conditioner according to claim 1, wherein the cover is shielded on a side surface.   The outdoor unit of the air conditioner according to claim 1 or 2, wherein a part of the side surface of the cover is open.   The outdoor unit of the air conditioner according to any one of claims 1 to 3, wherein the cover has a top surface shielded.   The air conditioner according to any one of claims 1 to 4, wherein a part of an upper surface of the cover is open.   The outdoor unit of the air conditioner according to any one of claims 1 to 5, wherein the cover has an upper surface inclined.   The outdoor unit of an air conditioner according to any one of claims 1 to 6, wherein the cover includes a guide unit that guides air to the outside air temperature sensor. The outdoor unit for an air conditioner according to any one of claims 1 to 7, further comprising a hood that covers the cover.

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