CN211041167U - Indoor unit of air conditioner - Google Patents
Indoor unit of air conditioner Download PDFInfo
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- CN211041167U CN211041167U CN201922113185.8U CN201922113185U CN211041167U CN 211041167 U CN211041167 U CN 211041167U CN 201922113185 U CN201922113185 U CN 201922113185U CN 211041167 U CN211041167 U CN 211041167U
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Abstract
本实用新型涉及一种空调装置的室内机。在包括将室外空气向壳体(33)内引入的换气口(115)的天花板设置型室内机中，抑制吸入空气的检测温度变得不准确。将换气口(115)和温度传感器(116)都布置在比热交换器(31)靠上风侧的位置处。使温度传感器(116)与空气吸入口(111)的外周缘之间的最短距离D2小于温度传感器(116)与换气口(115)的外周缘之间的最短距离D1，该温度传感器(116)是为了检测吸入空气的温度而布置在壳体(33)内的。
The utility model relates to an indoor unit of an air conditioner. In the ceiling-installed indoor unit including the ventilation port (115) for introducing the outdoor air into the casing (33), the detected temperature of the intake air is suppressed from becoming inaccurate. Both the ventilation port (115) and the temperature sensor (116) are arranged on the windward side of the heat exchanger (31). The shortest distance D2 between the temperature sensor (116) and the outer periphery of the air intake port (111) is smaller than the shortest distance D1 between the temperature sensor (116) and the outer periphery of the ventilation port (115), the temperature sensor (116) ) is arranged in the casing (33) to detect the temperature of the intake air.
Description
Technical Field
The utility model relates to an indoor unit of an air conditioning device.
Background
A ceiling-mounted indoor unit is known as an indoor unit of an air conditioner (hereinafter, simply referred to as an indoor unit) and includes a casing in which a suction port for sucking indoor air and a discharge port for discharging conditioned air into a room are formed (see, for example, patent document 1). In this indoor unit, a ventilation opening is provided in the casing so that outdoor air that is not conditioned outdoors, behind a ceiling, or the like can be introduced (ventilated) into the casing.
Patent document 1: japanese laid-open patent publication No. Sho 62-124413
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved by the utility model
When a temperature sensor for detecting the suction temperature of the indoor air is provided in the indoor unit, there is a possibility that the temperature of the outdoor air (for example, outdoor air) introduced into the casing from the ventilation opening may be detected depending on the position of the temperature sensor. Thus, the detected temperature of the indoor air becomes inaccurate.
The utility model aims to provide a: in a ceiling-mounted indoor unit including a ventilation opening, the temperature of the intake air is prevented from becoming inaccurate.
Technical solution for solving technical problem
In the present invention, the words indicating the direction and the words indicating the position of the constituent elements of the indoor unit indicate the direction and the position in a state where the indoor unit is installed in the specific air-conditioned space.
The first aspect of the present invention is based on the premise of a ceiling-mounted air conditioner indoor unit that performs air conditioning in a specific space.
The ceiling-mounted air conditioner indoor unit is characterized in that: it includes a box-shaped housing; a blower device disposed in the housing; a heat exchanger disposed downstream of the blower; an air suction port provided in the housing and sucking air in the space; an air outlet provided in the casing and configured to blow air into the space; a ventilation port formed in the casing and configured to introduce air outside the space into the casing; and a temperature sensor for detecting a temperature of air sucked from the air inlet 111, wherein the ventilation port and the temperature sensor are provided on a windward side of the heat exchanger, and a shortest distance D2 between the temperature sensor and an outer peripheral edge of the air inlet is smaller than a shortest distance D1 between the temperature sensor and an outer peripheral edge of the ventilation port.
In the first aspect, since D2 is smaller than D1, the temperature sensor is disposed at a position closer to the outer periphery of the air intake port than to the outer periphery of the ventilation port. In this first aspect, the air flow sucked into the air blowing device through the air intake port and the air flow sucked into the air blowing device through the ventilation port are formed, but since D2 is smaller than D1, the temperature sensor more easily detects the temperature of the indoor air sucked into the air blowing device from the air intake port than the air sucked into the air blowing device through the ventilation port. Therefore, it is possible to suppress the detected temperature of the intake air from becoming inaccurate.
The utility model discloses a second aspect on the basis of the first aspect, its characterized in that: the casing includes a top plate, a bottom plate, and a side portion disposed between the top plate and the bottom plate, the side portion of the casing includes a front plate, a rear plate facing the front plate, and a plurality of lateral plates disposed between the front plate and the rear plate, and the rear plate is formed with the air intake port.
In the second aspect, the ventilation port is formed in any one of the top plate, the bottom plate, and the side portions (the back plate, the front plate, and the lateral plate). In the second aspect, since D2 is also smaller than D1, the temperature sensor more easily detects the temperature of the indoor air sucked into the air blowing device from the air suction port than the air sucked into the air blowing device through the ventilation port. Therefore, in the indoor unit having the structure in which the box-shaped casing has the top plate, the bottom plate, and the side portions have the back plate, the front plate, and the lateral plate, it is possible to suppress the temperature of the intake air from becoming inaccurate.
The utility model discloses a third aspect on the basis of the second aspect, its characterized in that: the ventilation port is formed in one of two lateral plates located on both sides of a back plate of the casing.
In the third aspect, in the indoor unit in which the air intake port is formed in the rear panel and the ventilation port is formed in one of the two lateral panels located on both sides of the rear panel, it is possible to suppress the temperature of the intake air from becoming inaccurate.
The utility model discloses a fourth aspect on the basis of third aspect, its characterized in that: the plurality of cross panels are a first cross panel and a second cross panel facing each other.
In the fourth aspect, the plurality of cross-sectional plates are a first cross-sectional plate and a second cross-sectional plate that face each other, and the ventilation opening is formed in one of the first cross-sectional plate and the second cross-sectional plate. In the indoor unit according to the fourth aspect, in the indoor unit in which the air intake port is formed in the rear panel and the ventilation port is formed in one of the first horizontal panel and the second horizontal panel that face each other, it is possible to suppress the temperature detected by the intake air from becoming inaccurate.
The utility model discloses a fifth aspect on the basis of third aspect or fourth aspect, its characterized in that: the temperature sensor is closer to one of the two lateral plates than to the other of the two lateral plates on both sides of the back plate of the housing.
In the fifth aspect, the temperature sensor is provided at a position closer to one of the two cross panels located on both sides of the back panel of the casing than to the other. In other words, the temperature sensor is disposed at a position closer to the cross panel where the ventilation ports are not formed than to the cross panel where the ventilation ports are formed. Therefore, the temperature sensor is disposed at a position shifted from the center of the housing in the width direction (left-right direction) in a direction away from the ventilation port. Therefore, the following structure can be easily realized: the temperature sensor easily detects the temperature of the air flowing into the case from the air intake port, and it is difficult to detect the temperature of the air flowing into the case from the ventilation port.
The utility model discloses a sixth aspect on the basis of the fifth aspect, its characterized in that: in the case, an electronic component box in which a control board is housed is disposed in the vicinity of one of the two lateral panels of the case in comparison with the other lateral panel, and the temperature sensor is connected to the control board.
In the sixth aspect, the temperature sensor easily detects the temperature of the air flowing into the case from the air intake port, and it is difficult to detect the temperature of the air flowing into the case from the ventilation port. Further, since the electronic component box is disposed in the vicinity of the other lateral plate, the control board and the temperature sensor can be disposed at a close position. As a result, the temperature sensor can be easily connected to the control board in the electronic component box.
The seventh aspect of the present invention is characterized in that, on the basis of any one of the second to sixth aspects: the shortest distance D3 between the lateral panel closest to the temperature sensor and the temperature sensor is smaller than the shortest distance D1.
In the seventh aspect, both D2 and D3 are less than D1. Therefore, the temperature sensor is closer to the air intake port than the ventilation port and is disposed in the vicinity of the cross panel where the ventilation port is not formed. In the seventh aspect, as in the case where the ventilation port is formed in the lateral plate, even in the case where the ventilation port is formed in a surface other than the lateral plate (for example, the top plate), the temperature sensor is disposed in the vicinity of the lateral plate where the ventilation port is not formed, and the temperature sensor is located away from the ventilation port and close to the air intake port, whereby it is possible to suppress the temperature detected by the intake air from becoming inaccurate.
The eighth aspect of the present invention is characterized in that, on the basis of any one of the second to seventh aspects: the air blower includes a plurality of fans arranged in a direction intersecting the air flow direction between two horizontal plates arranged on both sides of the back plate, and the plurality of fans include: a first fan having the shortest distance to the peripheral edge of the ventilation opening 115; and a second fan having the shortest distance to the temperature sensor.
In the eighth aspect, the air after passing through the ventilation opening is easily sucked by the first fan, and the air after passing through the air suction opening is easily sucked by the second fan. Here, the temperature sensor is disposed closer to the air intake port than the ventilation port and in the vicinity of the second fan, and therefore the temperature sensor easily detects the temperature of the air flowing into the housing 33 from the air intake port. Therefore, it is easy to suppress the detection temperature of the intake air from becoming inaccurate.
The ninth aspect of the present invention is based on any one of the first to eighth aspects, and is characterized in that: the casing has a first casing and a second casing attached to the first casing, the blower and the heat exchanger are housed in the first casing, and the ventilation port is formed in the second casing.
In the ninth aspect, since the ventilation port is formed in the second housing, maintenance can be performed only by removing the second housing when the ventilation port is maintained. Therefore, maintenance of the ventilation ports becomes easy.
Drawings
Fig. 1 is a refrigerant circuit diagram schematically showing the configuration of an air conditioner;
fig. 2 is a perspective view of the indoor unit of the embodiment viewed obliquely from the front and upward;
FIG. 3 is a sectional view taken along line III-III of FIG. 2;
fig. 4 is a diagram showing the arrangement of devices inside the indoor unit;
fig. 5 is a layout diagram showing a positional relationship between a temperature sensor and a ventilation opening in the indoor unit;
fig. 6 is a layout diagram showing a positional relationship between a temperature sensor and a ventilation opening in the indoor unit of modification 1;
fig. 7 is a layout diagram showing a positional relationship between a temperature sensor and a ventilation opening in the indoor unit of modification 2;
fig. 8 is a longitudinal sectional view of an indoor unit according to modification 7;
fig. 9 is a diagram showing the arrangement of devices inside the indoor unit of fig. 8.
-description of symbols-
10-an air conditioning unit; 30-an indoor unit; 31-indoor heat exchanger (heat exchanger); 32-indoor air supply means (air supply means); 32 a-a first indoor fan (first fan); 32 b-a second indoor fan (second fan); 33-a housing; 34-a lateral part; 65-electronic component box; 66-printed wiring board (control substrate); 75-an air outlet; 93-a back panel; 94-front panel; 95-right panel (first cross panel); 96-left panel (second transverse panel); 97-a top plate; 98-a bottom plate; 111-suction inlet; 111 a-outer peripheral edge; 115-a ventilation port; 115 a-an outer peripheral edge; 116-a temperature sensor; 116 a-temperature detection section.
Detailed Description
The embodiments will be explained. The air conditioner 10 of the present embodiment includes an indoor unit 30 and an outdoor unit 20 connected to the indoor unit 30, and the air conditioner 10 air-conditions an indoor space, which is a specific space to be air-conditioned. In the present specification, the terms indicating the direction and the position such as "up", "down", "right", "left", "front", "back", "lateral", "top", "bottom", and "side" refer to the direction and the position when the indoor unit 30 in the installed state is viewed from the front side (front side).
-air conditioning device-
Referring to fig. 1, an air conditioner 10 will be described.
As shown in fig. 1, the air conditioner 10 includes an indoor unit 30 and an outdoor unit 20. In the air conditioner 10, the compressor 21, the four-way selector valve 22, the outdoor heat exchanger 23, the expansion valve 24, and the indoor heat exchanger 31 are connected by refrigerant pipes to constitute a refrigerant circuit 11 that performs a vapor compression refrigeration cycle.
The refrigerant circuit 11 includes an outdoor circuit 12, an indoor circuit 13, a liquid-side first connecting pipe 14, and a gas-side second connecting pipe 15. The first connection pipe 14 is connected to a first normally closed valve 16 of the outdoor circuit 12 and a first pipe joint 18 of the indoor circuit 13. The second connection pipe 15 is connected to a second normally closed valve 17 of the outdoor circuit 12 and a second pipe joint 19 of the indoor circuit 13.
Brief structure of indoor unit
The indoor unit 30 is provided in the indoor space, and includes an indoor heat exchanger 31, an indoor air-blowing device 32, and a water pan 35 (see fig. 3) not shown in fig. 1.
The indoor heat exchanger 31 exchanges heat between the refrigerant flowing inside and the indoor air supplied from the indoor air-sending device 32. The indoor heat exchanger 31 is constituted by, for example, a fin-and-tube heat exchanger. The indoor heat exchanger 31 constitutes a heat exchanger of the present invention.
The indoor air blower 32 supplies indoor air to the indoor heat exchanger 31, and supplies air having passed through the indoor heat exchanger 31 to the indoor space. The indoor air supply device 32 constitutes the air supply device of the present invention.
Brief structure of outdoor unit
The outdoor unit 20 is installed outdoors, and includes a compressor 21, a four-way selector valve 22, an outdoor heat exchanger 23, an outdoor fan 25, an expansion valve 24, a liquid-side first normally-closed valve 26, and a gas-side second normally-closed valve 27.
The compressor 21 sucks in the low-pressure gas refrigerant flowing out of the heat exchanger functioning as an evaporator of the indoor heat exchanger 31 and the outdoor heat exchanger 23, compresses the refrigerant, and discharges the high-temperature high-pressure gas refrigerant. The high-pressure gas refrigerant discharged from the compressor 21 flows into the heat exchanger functioning as a radiator of the indoor heat exchanger 31 and the outdoor heat exchanger 23.
The four-way selector valve 22 is used to reversibly switch the direction of flow of the refrigerant in the refrigerant circuit 11. Specifically, the four-way selector valve 22 is switchable between a first state (shown by solid lines in fig. 1) in which the indoor heat exchanger 31 serves as an evaporator and the air-conditioning apparatus 10 is caused to perform a cooling operation, and a second state (shown by broken lines in fig. 1) in which the indoor heat exchanger 31 serves as a radiator and the air-conditioning apparatus 10 is caused to perform a heating operation.
The outdoor heat exchanger 23 exchanges heat between the refrigerant flowing inside and outdoor air supplied from the outdoor fan 25. The outdoor heat exchanger 23 is constituted by, for example, a fin-and-tube heat exchanger.
The outdoor fan 25 is used to supply outdoor air to the outdoor heat exchanger 23.
The expansion valve 24 is used to reduce the pressure of the refrigerant flowing out of the heat exchanger functioning as a radiator among the indoor heat exchanger 31 and the outdoor heat exchanger 23. The expansion valve 24 is, for example, an electronic expansion valve whose opening degree can be adjusted.
Concrete structure of indoor unit
The indoor unit 30 of the present embodiment is a ceiling-suspended indoor unit, and is installed near the ceiling of an indoor space. Here, the indoor unit 30 of the present embodiment will be described with reference to fig. 2 to 5 as appropriate.
As shown in fig. 2 to 4, the indoor unit 30 is formed in a rectangular parallelepiped shape as a whole. The indoor unit 30 includes a main body unit 50, an attachment unit 100, and a pair of decorative covers 91, 92. An air suction port 111 for sucking air of an indoor space into the additional unit 100 is formed in the additional unit 100, and an air inflow port 60 through which air flows from the additional unit 100 into the main unit 50 is formed in the main unit 50. The main unit 50 is provided with an air outlet 75 for blowing out the conditioned air having passed through the indoor heat exchanger 31 to the front of the indoor unit 30 and supplying the conditioned air to the indoor space.
As described later, the main unit 50 has a first housing 51, and the additional unit 100 has a second housing 101. The casing 33 of the indoor unit 30 of the present embodiment is configured by the first casing 51 and the second casing 101 that are separated from each other.
The housing 33 includes a frame, a top plate 97, a side portion 34, and a bottom plate 98, which are not shown. In this embodiment, the side 34 has four panels. In the case 33, the back panel 93, which is the side portion 34 provided with the air inlet 111, faces the front panel 94, which is the side portion 34 provided with the air outlet 75. The housing 33 has left and right cross plates 95, 96. The "left and right horizontal plates 95 and 96" referred to herein include the horizontal plate of the first casing 51 and the horizontal plate of the second casing 101, respectively. The horizontal plates 95 and 96 include a right plate (first horizontal plate) 95 located on the right side surface and a left plate (second horizontal plate) 96 located on the left side surface in the installed state of the indoor unit 30. The top plate 97 of the casing 33 is a plate-like member constituting the upper surface of the casing 33 in the attached state of the indoor unit 30. The bottom plate 98 of the casing 33 is a plate-like member constituting the lower surface of the casing 33 in the attached state of the indoor unit 30.
Main unit
The main body unit 50 has a first housing 51 of a rectangular parallelepiped shape. In fig. 4, the main unit 50 is provided with the air inlet 60 on the back plate 56, and the air outlet 75 on the front plate 94 facing the back plate 56. An air passage 61 extending from the air inlet 60 to the air outlet 75 is formed inside the main body unit 50. The indoor heat exchanger 31, the indoor air blowing device 32, and the water tray 35 are housed in an air passage 61 in the main unit 50. In the air passage 61, the indoor heat exchanger 31 is disposed at a position on the leeward side of the indoor air blowing device 32 in the flow direction of the air flow formed by the indoor air blowing device 32.
The indoor heat exchanger 31 is provided to extend in the left-right direction of the main unit 50, the indoor heat exchanger 31 is configured such that two heat exchange surfaces are arranged at an angle to each other, as shown in fig. 4, to be in a diagonal L shape when viewed in side elevation.
As shown in fig. 4, in this example, the indoor air-sending device 32 includes four indoor fans 32a to 32d arranged in a left-right direction of the casing main body 31. The indoor fans 32a to 32d are arranged between the two horizontal plates 95 and 96 in a direction intersecting the air flow direction. The indoor fans 32a to 32d are connected to a fan motor 32e via a common shaft 32f, and are driven by the fan motor 32 e.
An electronic component box 65 is provided in the main body unit 50. The electronic component box 65 is formed in a box shape of a substantially rectangular parallelepiped. A printed wiring board 66 as a control board is housed in the electronic component box 65.
The drip tray 35 is disposed inside the first housing 51 above the floor 98. The drain pan 35 is made of a foamed resin and receives drain water (condensed water) generated by the indoor heat exchanger 31. As shown in fig. 3 and 4, the water receiving tray 35 includes a water receiving portion 36 and a rising portion 37, the water receiving portion 36 receives drain water and has a rectangular shape in plan view, and the rising portion 37 is formed at a portion which becomes an outer edge of the water receiving portion 36.
As shown in fig. 3, a blow-out passage 73 is formed in the main unit 50 on the downstream side in the air flow direction from the heat exchanger 31. The outlet passage 73 is a passage extending obliquely downward from the indoor heat exchanger 31 toward the air outlet 75 as a whole, and the air outlet 75 is formed at the downstream end in the air flow direction. The entire blow-out passage 73 is arranged downstream of the rising portion 37, which is the outer edge of the drain pan 35, in the air flow direction.
An airflow direction adjustment blade 85 configured by a plurality of (four in the present embodiment) blade members 86 is provided in the air outlet 75, and the blade members 86 are made of synthetic resin. Each blade member 86 is an elongated rectangular plate-like member. Each blade member 86 is arranged so that its longitudinal direction is approximately horizontal, and crosses the air outlet 75 in the left-right direction (see fig. 2). The four blade members 86 are arranged at equal intervals in the up-down direction. Each blade member 86 is rotatable within a predetermined angular range around a rotation axis extending along the longitudinal direction thereof. The airflow direction adjustment vane 85 blocks the air outlet 75 in a state where the indoor unit 30 is not operating. The term "closed" as used herein includes a state in which a gap is formed to some extent.
When each blade member 86 is driven by a motor (not shown) for adjusting the wind direction, the angle of each blade member 86 changes. Each blade member 86 guides air blown out from the blow-out passage 73. Therefore, when the angle of each blade member 86 is changed, the direction of the air blown out from the air outlet passage 73 is changed in the vertical direction. The airflow direction adjustment vane 85 is configured to: in the state where the indoor unit 30 is installed, the airflow direction of the air flowing out of the outlet passage 73 can be adjusted from a predetermined angle lower than the horizontal direction to a predetermined angle higher than the horizontal direction.
Attachment unit
The structure of the additional unit 100 will be described with reference to fig. 3 and 4. As shown in fig. 3 and 4, the additional unit 100 includes a second case 101 and a discharge portion 102.
The second casing 101 is formed in a rectangular parallelepiped shape having a long outer shape in the lateral direction, and is attached to the back surface of the main unit 50. The second casing 101 has the air inlet 111 for sucking air into the inside, and an air vent 112 for allowing air to flow from the second casing 101 to the first casing 51. A filter (not shown) is provided in air inlet 111.
The discharge portion 102 is housed in the second case 101. The discharge portion 102 is provided to purify air flowing in the second casing 101 by discharge that generates low-temperature plasma including active materials. In the additional unit, an electronic component box housing a control board for controlling the operation of the discharge portion 102 is provided separately from the electronic component box 65 of the main unit 50, but this is not illustrated.
A ventilation port 115 for introducing outdoor air into the additional unit 100 and the main unit 50 is formed in the left panel 96 of the second casing 101. Outdoor air is air that has not been temperature-conditioned, such as outdoor air or air on the back of a ceiling. A duct (not shown) for introducing outdoor air into the internal space of the casing 33 is connected to the ventilation port 115, and the inside of the casing 33 is ventilated.
Temperature detecting structure for sucked air
A temperature sensor 116 for detecting the temperature of the intake air sucked from the air intake port 111 is provided inside the first casing 51. The temperature sensor 116 of this embodiment includes a temperature detection unit 116a as a part of the temperature sensor 116. The temperature sensor 116 is a sensor in which the resistance changes when the temperature of the detection object changes, and the main body and the temperature detection portion 116a are schematically shown in a square shape in fig. 4. In the present invention, the "temperature sensor 116" refers to the sensor itself that detects the air temperature. A wiring (not shown) is connected to the temperature sensor 116, and the wiring is a member different from the temperature sensor 116.
As shown in fig. 5, the shortest distance D2 between the temperature sensor 116 (specifically, the temperature detection section 116a) and the outer peripheral edge 111a of the air intake opening 111 is smaller than the shortest distance D1 between the temperature sensor 116 (specifically, the temperature detection section 116a) and the outer peripheral edge 115a of the ventilation opening 115. The shortest distances D1, D2 correspond to the lengths of arrows D1, D2 in fig. 5. In short, the temperature sensor 116 is closer to the air intake port 111 than the ventilation port 115.
The shortest distance D3 between the temperature sensor 116 and the right panel 95 closest to the temperature sensor 116 (specifically, the temperature detector 116a) and not having the ventilation opening 115 is smaller than the shortest distance D1.
The above-described electronic component box 65 is arranged at a position closer to the right panel 95 than the left panel 96. The temperature sensor 116 is mounted on the electronic component box 65, and is connected to the printed wiring board 66 in the electronic component box 65 via the wiring. With this arrangement, the temperature sensor 116 is located closer to the right panel 95 than the left panel 96, and away from the ventilation opening 115.
As described above, the four indoor fans 32a to 32d are arranged between the right and left panels 95 and 96 in the right and left direction intersecting the air flow direction at approximately right angles. The shortest distances between the four indoor fans 32a to 32d and the temperature sensor 116 are different from each other, and the shortest distances between the four indoor fans 32a to 32d and the temperature detection unit 116a are also different from each other.
In this embodiment, the four indoor fans 32a to 32d include a first indoor fan 32a and a second indoor fan 32 b. The first indoor fan 32a is closest to the left panel 96 among the four indoor fans 32a to 32D, and has the shortest distance (the length of the dotted arrow D4 in the drawing) to the peripheral edge 115a of the ventilation opening 115. The second indoor fan 32b is closest to the right panel 95 among the four indoor fans 32a to 32d, and the shortest distance from the temperature sensor 116 is shortest.
Since the distance D2 between the outer peripheral edge 111a of the air inlet 111 and the temperature sensor 116 is shorter than the distance D1 between the outer peripheral edge 115a of the ventilation opening 115 and the temperature sensor 116, and the distance between the temperature sensor 116 and the second indoor fan 32b is shorter than the distance between the temperature sensor 116 and the other indoor fans 32, the air flowing into the casing 33 from the air inlet 111 near the temperature sensor 116 passes through the temperature sensor 116 and is sucked into the second indoor fan 32 b. Therefore, the air path from the air inlet 111 to the second indoor fan 32b after passing through the temperature sensor 116 is likely to be a different path from the air path from the ventilation opening 115 to the first indoor fan 32 a.
The arrangement of the ventilation ports 115 and the temperature sensor 116 may be reversed from the arrangement of the embodiment.
Decoration cover
The decorative covers 91, 92 are box-like members having an elongated rectangular parallelepiped shape. One side surface and the back surface of the long side of the decorative covers 91, 92 are opened. The lengths of the trim covers 91 and 92 are approximately equal to the length from the back surface of the attachment unit 100 to the front surface of the main unit 50.
The decorative covers 91 and 92 are attached to the main unit 50 with their open sides facing the housing 33, and cover the sides of the main unit 50 and the sides of the additional unit 100. The right trim cover 91 disposed on the right side of the housing 33 covers the right panel 95 of the housing 33. The left trim cover 92 disposed on the left side of the housing 33 covers the left panel 96 of the housing 33.
-operation actions-
The air conditioner 10 selectively performs a cooling operation and a heating operation.
In the cooling operation, the four-way selector valve 22 is set to the first position, and the refrigerant circulates through the refrigerant circuit 11. The outdoor heat exchanger 23 functions as a radiator, and the indoor heat exchanger 31 functions as an evaporator. The indoor unit 30 cools air drawn from the indoor space in the indoor heat exchanger 31, and then blows the cooled air to the indoor space.
In the heating operation, the four-way selector valve 22 is set to the second position, and the refrigerant circulates through the refrigerant circuit 11. The indoor heat exchanger 31 functions as a radiator, and the outdoor heat exchanger 23 functions as an evaporator. The indoor unit 30 heats air drawn from the indoor space in the indoor heat exchanger 31, and then blows the heated air to the indoor space.
Temperature detection of inhaled air
In this embodiment, the air having passed through the air inlet 111 is sucked by each of the four indoor fans 32a to 32 d. On the other hand, as described above, the air path from the ventilation opening 115 to the first indoor fan 32a is different from the air path from the air intake opening 111 to the second indoor fan 32 b. Therefore, the air having passed through the ventilation ports 115 is almost all sucked by the first fan 32a as indicated by an arrow D4, and is almost all not sucked by the second fan 32 b. Also, since the temperature sensor 116 is disposed at a position closer to the air suction opening 111 than the ventilation opening 115, it is difficult for the temperature sensor 116 to detect the temperature of the outdoor air sucked from the ventilation opening 115 by the first fan 32a, and it is easy to detect the temperature of the indoor air sucked from the air suction opening 111 by the second indoor fan 32 b. Therefore, the temperature of the intake air can be detected with high accuracy by the temperature sensor 116.
Effects of the embodiment
In this embodiment, the indoor unit 30 includes a ventilation port 115 formed in the casing 33 and configured to introduce outdoor air into the casing 33, and a temperature sensor 116 configured to detect a temperature of air sucked through the air suction port 111, and both the ventilation port 115 and the temperature sensor 116 are disposed on the windward side of the indoor heat exchanger 31 in the air flow direction. Further, the shortest distance D2 between the temperature sensor 116 and the outer peripheral edge 111a of the air intake opening 111 is smaller than the shortest distance D1 between the temperature sensor 116 and the outer peripheral edge 115a of the ventilation opening 115. The shortest distance D3 between the temperature sensor 116 and the right panel 95, which is the cross panel closest to the temperature sensor 116, is shorter than the shortest distance D1.
In this embodiment, the housing 33 includes a top plate 97, a bottom plate 98, and a side portion 34 disposed between the top plate 97 and the bottom plate 98, and the air intake port 111 is formed on the rear panel 93 in the side portion 34. The side 34 facing the back plate 93 is a front plate 94, and the sides 34 other than the back plate 93 and the front plate 94 are lateral plates 95, 96 of the housing 33.
Here, in the indoor unit in which the ventilation port is provided in the casing, when a temperature sensor for detecting the suction temperature of the indoor air is provided, there is a possibility that the temperature of the outdoor air (for example, outdoor air) introduced into the casing from the ventilation port 115 may be detected depending on the position of the temperature sensor, and in this case, the detected temperature of the indoor air becomes inaccurate.
In the indoor unit 30 having the box-shaped casing 33 including the back panel 93, the front panel 94, and the left and right cross panels 95 and 96, the shortest distance D2 between the temperature sensor 116 and the outer peripheral edge 111a of the air inlet 111 is smaller than the shortest distance D1 between the temperature sensor 116 and the outer peripheral edge 115a of the ventilation opening 115. In other words, the temperature sensor 116 is disposed at a position closer to the outer peripheral edge 111a of the air intake port 111 than the outer peripheral edge 115a of the ventilation port 115. In addition, the temperature sensor 116 is located at a position closer to the air intake port 111 than the ventilation port 115, and is disposed in the vicinity of the right panels 57, 109 where the ventilation port 115 is not formed.
Therefore, the air passing through the temperature sensor 116 is likely to be almost the indoor air sucked from the air inlet 111 in the path of the air sucked by the fans 32a to 32d through the air inlet 111 and the path of the air sucked by the fans 32a to 32d through the ventilation port 115. Therefore, the temperature sensor is less likely to detect the temperature of the air taken in from the ventilation port 115, and thus the detected temperature of the air taken in can be suppressed from becoming inaccurate.
In the present embodiment, the temperature sensor 116 is disposed at a position closer to the right panel 95 where the ventilation port 115 is not formed than the left panel 96 where the ventilation port 115 is formed. According to this configuration, the distance from the ventilation port 115 to the temperature sensor 116 becomes longer than that in a configuration in which the temperature sensor 116 is located at the center in the width direction of the housing 33. Therefore, the air taken in from the ventilation port 115 hardly reaches the temperature sensor 116. Therefore, it is difficult to detect the temperature of the air sucked through the ventilation port 115 by the temperature sensor 116, and conversely, it is easy to detect the temperature of the indoor air sucked through the air suction port 111 by the temperature sensor 116.
In this embodiment, the electronic component box 65 housing the printed wiring board 66 is disposed in the vicinity of the right panel 95 where the ventilation opening 115 is not formed, and the temperature sensor 116 is connected to the printed wiring board 66. With this configuration, the air flowing into the casing 33 from the air inlet 111 easily reaches the temperature sensor 116, and the air flowing into the casing 33 from the ventilation port 115 hardly reaches the temperature sensor 116. Further, in this embodiment, the temperature sensor 116 and the electronic component box 65 are both disposed near the right panel 95, and the distance between the temperature sensor 116 and the electronic component box 65 is short, so that the temperature sensor 116 is easily connected to the printed wiring board 66 in the electronic component box 65.
In this embodiment, a plurality of indoor fans 32a to 32d including a first fan 32a and a second fan 32b are provided. The shortest distance between the first fan 32a and the peripheral edge of the ventilation opening 115 is shortest, and the shortest distance between the second fan 32b and the temperature sensor 116 is shortest. With this configuration, the air sucked by the first fan 32a is likely to be air after passing through the ventilation opening 115, and the air sucked by the second fan 32b is likely to be air after passing through the air suction opening 111 and the temperature sensor 116. Further, since the temperature of the indoor air sucked from the air suction port 111 is easily detected by the temperature sensor 116, it is easy to suppress the detected temperature of the sucked air from becoming inaccurate.
In the present embodiment, the housing 33 includes a first housing 51 and a second housing 101 attached to the first housing 51. The first casing 51 houses the indoor fans 32a to 32d and the heat exchanger 31. The second housing 101 accommodates a functional component 102. The ventilation port 115 is formed in the second casing 101.
In this embodiment, since the ventilation port 115 is formed in the second casing 101, maintenance can be performed by simply removing the second casing 101 when the ventilation port 115 is maintained. Therefore, maintenance of the ventilation port 115 becomes easy.
Modification of the first embodiment
(modification 1)
As shown in fig. 6, the ventilation port 115 may be formed in the top plate 97 instead of the left panel 96. In modification 1, the temperature sensor 116 is also located in the vicinity of the outer peripheral edge 111a of the air intake port 111, apart from the outer peripheral edge 115a of the ventilation port 115. Specifically, the magnitude relationship among the distances indicated by D1, D2, and D3 described in the above embodiment is set in the same manner as in the above embodiment.
Therefore, in modification 1, the outdoor air flowing into the casing 33 through the ventilation port 115 is less likely to reach the temperature sensor 116, and the air flowing into the indoor space inside the casing 33 through the suction port 111 is also more likely to reach the temperature sensor 116. Therefore, it is possible to suppress the detected temperature of the intake air from becoming inaccurate.
(modification 2)
As shown in fig. 7, the ventilation port 115 may be formed in the rear plate 93 instead of the left plate 96. In modification 2, the temperature sensor 116 is disposed at a position distant from the left panel 96 and close to the right panel 95. The ventilation opening 115 is formed in the rear plate 93 at a position close to the left plate 96, and the distance from the right plate 95 to the ventilation opening 115 is longer than the distance from the left plate 96 to the ventilation opening 115. Also, the temperature sensor 116 is located at a position closer to the outer peripheral edge of the air intake port 111 than the outer peripheral edge 115a of the ventilation port 115. Specifically, the magnitude relationship among the distances D1, D2, and D3 described in the above embodiment is set in the same manner as in the above embodiment.
In modification 2, the outdoor air flowing into the casing 33 through the ventilation port 115 is also easily sucked into the first fan 32a along arrow D4, and is less likely to reach the temperature sensor 116 indicated by arrow D1. On the other hand, the air flowing into the indoor space inside the casing 33 from the suction port 111 easily reaches the temperature sensor 116 along arrow D2. Therefore, it is possible to suppress the detected temperature of the intake air from becoming inaccurate.
(modification 3)
The arrangement of the temperature sensor 116 and the ventilation port 115 is not limited to the positional relationship in the above-described embodiment, modification 1, and modification 2, and other arrangements may be used. For example, the temperature sensor 116 may not necessarily be provided on the electronic component box 65, but may be provided at a position separated from the electronic component box 65. However, the temperature sensor 116 is disposed at a position closer to the suction port 111 than the ventilation port 115.
Even with this configuration, as in the above-described embodiment and modifications, it is possible to suppress the temperature of the intake air from becoming inaccurate.
(modification 4)
In the above embodiment, the temperature sensor 116 is disposed at a position closer to the right panel 95 where the ventilation port 115 is not formed than the left panel 96 where the ventilation port 115 is formed, but another arrangement may be set. For example, the temperature sensor 116 may be disposed at a position near the bottom plate 98 in the center of the right and left panels 95 and 96, and the ventilation opening 115 may be formed at a position near the top plate 97 of the left panel 96 (or the right panel 95). In other words, the temperature sensor 116 and the ventilation port 115 are separated in the vertical direction of the housing 33. In this case, the air intake port 111 is also formed in the back panel 93, for example, and the temperature sensor 116 is also disposed in the vicinity of the outer peripheral edge 111a of the air intake port 111.
Even with this configuration, as in the above-described embodiment and modifications, it is possible to suppress the temperature of the intake air from becoming inaccurate.
(modification 5)
In the above embodiment, the plurality of indoor fans 32a to 32d are disposed inside the first casing 51, and the plurality of indoor fans 32a to 32d include the first fan 32a whose shortest distance from the peripheral edge portion 115a of the ventilation opening 115 is shortest, and the second fan 32b whose shortest distance from the temperature sensor 116 is shortest. However, the indoor fan is not limited to a plurality of fans.
Specifically, in the configuration in which the indoor fan 32 is provided as one unit, the shortest distance D2 between the temperature sensor 116 and the outer peripheral edge 111a of the air intake port 111 may be smaller than the shortest distance D1 between the temperature sensor 116 and the outer peripheral edge 115a of the ventilation port 115. In this configuration, as in the above-described embodiment and modifications, it is possible to suppress the temperature of the intake air from becoming inaccurate.
(modification 6)
In the above embodiment, the temperature sensor 116 is disposed at the following positions, that is: this position ensures that the relationship between the shortest distance D1 of the temperature sensor 116 from the outer peripheral edge 115a of the ventilation opening 115, the shortest distance D2 of the temperature sensor 116 from the outer peripheral edge 111a of the air intake opening 111, and the shortest distance D3 of the temperature sensor 116 from the right panel 95 closest to the temperature sensor 116 is such that both D2 and D3 are less than D1. In contrast, the relationship of D3 being smaller than D1 may not be satisfied as long as the relationship of D2 being smaller than D1 is satisfied.
In short, in the intake air temperature detection structure of the present invention, other structures may be appropriately changed as long as the shortest distance D2 between the temperature sensor 116 and the outer peripheral edge 111a of the air inlet 111 is smaller than the shortest distance D1 between the temperature sensor 116 and the outer peripheral edge 115a of the ventilation port 115, and the temperature sensor 116 detects the temperature of the air in the indoor space after passing through the air inlet 111.
(modification 7)
As shown in fig. 8 and 9, modification 7 is an example of the blowing unit 70 in which a portion of the main unit 50 on the downstream side of the indoor heat exchanger 31 in the air flow direction, where the blowing passage 73 is provided, is set apart from the main unit 50. In modification 7, the casing of the blowing unit 70 is attached to the front surface of the casing of the main unit 50.
The configuration of modification 7 is the same as that of the first embodiment, except that the blow-out unit 70 is separated from the main body unit 50. In particular, the shortest distance D2 between the temperature sensor 116 and the outer peripheral edge 111a of the air intake opening 111 is smaller than the shortest distance D1 between the temperature sensor 116 and the outer peripheral edge 115a of the ventilation opening 115. The shortest distance D3 between the temperature sensor 116 and the lateral plates 95 and 96 closest to the temperature sensor 116 is shorter than the shortest distance D1.
Therefore, also in modification 7, as in the above-described embodiment, the temperature of the indoor air sucked through the air inlet 111 is easily detected by the temperature sensor 116, and therefore, it is easy to suppress the detection temperature of the sucked air from becoming inaccurate.
Other embodiments
The above embodiment may have the following configuration.
For example, in the above-described embodiment, the indoor unit 30 configured by combining the main unit 50, the additional unit 100, and the decorative covers 91 and 92 has been described, but the indoor unit 30 may be configured such that: the first case 51 of the main unit 50 is integrated with the second case 101 of the additional unit 100, and functional components such as a discharge portion are provided in the first case 51.
In the above-described embodiment and modification, the ventilation port 115 is formed only on one of the side portions 34 of the housing 33 or only on the top plate 97, but may be formed on a plurality of surfaces such as any two surfaces. In this case, the same effects as those of the above-described embodiment can be obtained if the shortest distance D2 between the temperature sensor 116 and the outer peripheral edge 111a of the air intake opening 111 is shorter than the shortest distance D1 between the temperature sensor 116 and the outer peripheral edge 115a of the ventilation opening 115.
In the above embodiment, the shape of the housing 33 is not limited to the rectangular parallelepiped shape, and may be a three-dimensional shape having a hexagonal shape or an octagonal shape when viewed from above. In the case where the housing 33 is not rectangular parallelepiped, the total number of the left and right side plates is three or more. The front plate 94 and the rear plate 93 are not limited to being parallel to each other, and the front plate 94 may be inclined, for example. The manner in which the side panels 34 face each other in the rectangular parallelepiped case 33 is also not limited to being parallel.
The indoor unit 30 having the ventilation port 115 of the present invention is not limited to a ceiling-suspended type indoor unit, as long as the shortest distance D2 between the outer peripheral edge 111a of the air inlet port 111 and the temperature sensor 116 is shorter than the shortest distance D1 between the outer peripheral edge 115a of the ventilation port 115 and the temperature sensor 116 in the structure in which the air sucked into the casing 33 from the air inlet port 111 passes through the indoor air blowing device 32 and the indoor heat exchanger 31 and is blown out from the air outlet 75.
While the embodiments and the modifications have been described above, it is to be understood that various changes and modifications can be made therein without departing from the spirit and scope of the claims of the present invention. The above embodiments and modifications may be combined or substituted as appropriate as long as the functions of the objects of the present invention are not impaired.
Industrial applicability-
To sum up, the present invention is useful for an indoor unit of an air conditioner.
Claims (10)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-224566 | 2018-11-30 | ||
| JP2018224566A JP6848956B2 (en) | 2018-11-30 | 2018-11-30 | Indoor unit of air conditioner |
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| Publication Number | Publication Date |
|---|---|
| CN211041167U true CN211041167U (en) | 2020-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922113185.8U Active CN211041167U (en) | 2018-11-30 | 2019-11-29 | Indoor unit of air conditioner |
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| JP (1) | JP6848956B2 (en) |
| CN (1) | CN211041167U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116583697A (en) * | 2020-11-30 | 2023-08-11 | 大金工业株式会社 | Ventilation device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023135845A1 (en) * | 2022-01-17 | 2023-07-20 | 三菱電機株式会社 | Indoor unit and air conditioner |
| CN115493249A (en) * | 2022-11-16 | 2022-12-20 | 煜安特种阀门研制(深圳)有限公司 | Multi-valve-based temperature and humidity regulation and control method, device and system |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62124413U (en) * | 1986-01-31 | 1987-08-07 | ||
| JPH0625790Y2 (en) * | 1988-08-16 | 1994-07-06 | 暖冷工業株式会社 | Air conditioner outlet structure |
| JPH0234928U (en) * | 1988-08-29 | 1990-03-06 | ||
| JP2574286Y2 (en) * | 1991-12-16 | 1998-06-11 | 株式会社東芝 | Ceiling-type air conditioner |
| JP3599974B2 (en) * | 1997-09-29 | 2004-12-08 | 三洋電機株式会社 | Ceiling-type air conditioner |
| JP4147549B2 (en) * | 2003-03-18 | 2008-09-10 | 三菱電機株式会社 | Air conditioner |
| JP4295541B2 (en) * | 2003-03-28 | 2009-07-15 | 東芝キヤリア株式会社 | Ventilation system |
| JP4417101B2 (en) * | 2003-11-30 | 2010-02-17 | 東芝キヤリア株式会社 | Ceiling suspended air conditioner |
| EP1789731A1 (en) * | 2004-08-18 | 2007-05-30 | A/S Ribe Jernindustri | Ventilator with fresh air capability together with heating and/or cooling capability and methods for operating such ventilator |
| JP4616607B2 (en) * | 2004-09-30 | 2011-01-19 | 東芝キヤリア株式会社 | Air conditioner |
| JP4544364B1 (en) * | 2009-04-17 | 2010-09-15 | ダイキン工業株式会社 | Air conditioner |
-
2018
- 2018-11-30 JP JP2018224566A patent/JP6848956B2/en active Active
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2019
- 2019-11-29 CN CN201922113185.8U patent/CN211041167U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116583697A (en) * | 2020-11-30 | 2023-08-11 | 大金工业株式会社 | Ventilation device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6848956B2 (en) | 2021-03-24 |
| JP2020085402A (en) | 2020-06-04 |
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