WO2019035154A1 - Unité extérieure et climatiseur - Google Patents

Unité extérieure et climatiseur Download PDF

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Publication number
WO2019035154A1
WO2019035154A1 PCT/JP2017/029266 JP2017029266W WO2019035154A1 WO 2019035154 A1 WO2019035154 A1 WO 2019035154A1 JP 2017029266 W JP2017029266 W JP 2017029266W WO 2019035154 A1 WO2019035154 A1 WO 2019035154A1
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WO
WIPO (PCT)
Prior art keywords
outdoor unit
distance
heat exchanger
temperature sensor
housing
Prior art date
Application number
PCT/JP2017/029266
Other languages
English (en)
Japanese (ja)
Inventor
岡田　和也
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2017/029266 priority Critical patent/WO2019035154A1/fr
Priority to JP2019536357A priority patent/JP6727445B2/ja
Publication of WO2019035154A1 publication Critical patent/WO2019035154A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/20—Electric components for separate outdoor units
    • F24F1/22—Arrangement or mounting thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/46—Component arrangements in separate outdoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/56—Casing or covers of separate outdoor units, e.g. fan guards

Definitions

  • the present invention relates to an outdoor unit provided with a device for measuring the outside air temperature, and an air conditioner provided with the outdoor unit.
  • the air conditioner is equipped with a sensor that measures the outside air temperature to detect the outside air temperature, and controls the fan rotation speed or the compressor frequency to control the air conditioner's cooling capacity and heating capacity. I have control. Therefore, an outdoor unit of an air conditioner provided with a contact-type temperature sensor for measuring the outside air temperature has been proposed (see, for example, Patent Document 1).
  • the outdoor unit of patent document 1 measures the temperature of a to-be-contacted thing with a contact-type temperature sensor.
  • the contact-type temperature sensor is also in contact with the fixed part of the temperature sensor, and may be affected by the fixed part of the temperature sensor.
  • the temperature sensor is located near the heat exchanger, and the temperature sensor and the fixed parts may be influenced by the heat exchanger functioning as an evaporator or a condenser. For example, the radiation heat of the heat exchanger may be transmitted to the temperature sensor, and the correct outside air temperature may not be measured.
  • the radiation heat of a heat exchanger may be transmitted to the fixing
  • the present invention is intended to solve the problems as described above, and is an outdoor unit provided with a device for measuring the outside air temperature without being affected by radiant heat of a heat exchanger and transferred heat of a fixed part of a temperature sensor
  • An object of the present invention is to provide an air conditioner provided with an outdoor unit.
  • the outdoor unit of the present invention is a non-contact type temperature sensor which is located in the housing which constitutes the outer shell of the outdoor unit, the heat exchanger installed in the housing, and the suction side of the heat exchanger and which is installed in the housing And a member to be measured which is installed outside the housing to face the temperature sensor, the surface temperature changes according to the outside air temperature, and the surface temperature is detected by the temperature sensor.
  • the non-contact temperature sensor indirectly detects the outside air temperature by measuring the temperature of the member to be measured. Therefore, the outside air temperature can be measured without being affected by the radiant heat of the heat exchanger and the transferred heat of the fixed part of the temperature sensor.
  • Embodiment 1 of the present invention It is a front view of the outdoor unit concerning Embodiment 1 of the present invention. It is a rear perspective view of the outdoor unit which concerns on Embodiment 1 of this invention. It is a disassembled perspective view of the outdoor unit which concerns on Embodiment 1 of this invention. It is a schematic sectional drawing in the AA line of the outdoor unit of FIG. It is a figure which shows the example of the 1st fixing method of the fixing member in the outdoor unit of FIG. It is a figure which shows the example of the 2nd fixing method of the fixing member in the outdoor unit of FIG. It is a figure which shows the example of the 3rd fixing method of the fixing member in the outdoor unit of FIG.
  • FIG. 1 is a front view of an outdoor unit 100 according to Embodiment 1 of the present invention.
  • FIG. 2 is a rear perspective view of the outdoor unit 100 according to Embodiment 1 of the present invention.
  • FIG. 3 is an exploded perspective view of the outdoor unit 100 according to Embodiment 1 of the present invention.
  • the configuration of each part of the outdoor unit 100 will be described with reference to FIGS. 1 to 3.
  • the X axis shown in FIGS. 1 to 3 indicates the left and right width directions of the outdoor unit 100 with the X1 side as the left and the X2 side as the right.
  • the Y axis indicates the front and rear depth directions of the outdoor unit 100 with the Y1 side as the front side and the Y2 side as the rear side. Furthermore, the Z-axis indicates the vertical direction of the outdoor unit 100 with the Z1 side up and the Z2 side down.
  • the positional relationship between the front, rear, right, or upper and lower components of the respective components of the outdoor unit 100 is, in principle, the positional relationship when the outdoor unit 100 is installed in a usable state.
  • the outline panel is abbreviate
  • the outdoor unit 100 is an outdoor unit of an air conditioner, and FIG. 1 shows an example configured as a floor-standing type heat source side unit.
  • the outdoor unit 100 may be configured as a heat source unit other than a floor-standing type, for example, a wall-mounted type, a roof-standing type, or a ceiling-mounted heat source-side unit.
  • the outdoor unit 100 includes a temperature measurement device 40 outside the heat exchanger 33 described later in the depth direction (Y-axis direction).
  • the outdoor unit 100 has the housing
  • the housing 10 is formed of a sheet metal in a substantially rectangular parallelepiped shape, and the rear wall portion 10c having the suction port 10c1 formed therein for receiving the wind generated by the drive of the blower 36 and the wind generated by the drive of the blower 36 are blown out.
  • the housing 10 has a left side wall 10b and a right side wall 10d that connect the back wall 10c and the front wall 10a.
  • casing 10 has the top panel 10e which comprises the ceiling wall of an upper surface part, and has the baseplate 10f which comprises the bottom wall of a lower surface part.
  • the casing 10 of the outdoor unit 100 has a protection member 11 facing the heat exchanger 33 described later and installed in the air suction port 10c1 formed in the back wall portion 10c.
  • the protective member 11 protects the heat exchanger 33 from contact, and as shown in FIG. 2, metal wires are combined in a grid shape to be formed into a substantially rectangular shape. Attachment portions 11 a located at the four corners of the protective member 11 are attached to the back wall 10 c of the housing 10 and fixed to the housing 10.
  • the protective member 11 has a grid-like portion 11 b which is disposed at a position facing the heat exchanger 33 to constitute between the attachment portions 11 a.
  • the grid portion 11 b is configured to bulge outward from the housing 10.
  • the protective member 11 is not limited to a configuration in which metal wires are combined in a grid shape, and for example, the protective member 11 may be formed of a resin guard member having a flat plate in which a plurality of through holes are formed. Good.
  • the inside of the outdoor unit 100 is divided by a partition plate 50 into a machine room 20 and a fan room 21.
  • a compressor 31 In the machine room 20 located in the space on the right side of the outdoor unit 100, a compressor 31, a refrigerant pipe, a flow path switching device, an electrical box (not shown), etc. are stored.
  • a heat exchanger 33, a blower 36 and the like are accommodated in the blower chamber 21 located in the.
  • the compressor 31 compresses the drawn-in refrigerant and discharges it in the form of a high-temperature high-pressure gas refrigerant, and is configured, for example, by a rotary type, a scroll type, a vane type, or the like.
  • the heat exchanger 33 exchanges heat between the outside air and the refrigerant, and functions as an evaporator during heating operation and as a condenser during cooling operation.
  • the heat exchanger 33 is configured as a fin-and-tube type heat exchanger in which heat transfer tubes penetrate a plurality of fins arranged in parallel.
  • the heat exchanger 33 includes a heat transfer pipe through which the refrigerant passes, and fins for increasing the heat transfer area between the refrigerant flowing through the heat transfer pipe and the outside air.
  • the heat exchanger 33 is fixed to the bottom plate 10 f so that the heat transfer tubes are horizontal.
  • the heat exchanger 33 installed in the housing 10 is formed in a so-called L shape having a flat area and a curved area in a plan view.
  • the heat exchanger 33 may be formed in flat form by planar view. It may be formed in a so-called U shape provided with curved regions at both ends.
  • the blower 36 is configured as, for example, a propeller fan such as an axial flow fan, and circulates air in order to efficiently perform heat exchange between the refrigerant and the air in the heat exchanger 33.
  • the rotation axis of the blower 36 is disposed to face in the horizontal direction in the depth direction of the housing 10.
  • FIG. 4 is a schematic cross-sectional view taken along line AA of the outdoor unit 100 of FIG.
  • the configuration of an apparatus for measuring the temperature provided to the outdoor unit 100 will be described using FIGS. 2 and 4.
  • the temperature measuring device 40 has a temperature sensor 41, a fixing member 42, and a measured member 43.
  • the temperature measurement device 40 is electrically connected to the control device 25.
  • the control device 25 is configured by, for example, hardware such as a circuit device or software executed on an arithmetic device such as a central processing unit.
  • the controller 25 acquires the information detected by the temperature sensor 41.
  • the control device 25 controls the operation of the compressor 31, the blower 36, the flow path switching device 32, which will be described later, the indoor blower 37 and the like based on the information acquired from the temperature sensor 41.
  • the temperature sensor 41 is a non-contact temperature sensor such as an infrared radiation thermometer.
  • the temperature sensor 41 indirectly detects the outside air temperature by measuring the surface temperature of the member 43 to be measured.
  • the temperature sensor 41 is installed in the housing 10 located on the suction side of the heat exchanger 33.
  • FIG. 5 is a view showing an example of a first fixing method of the fixing member in the outdoor unit of FIG.
  • FIG. 6 is a view showing an example of a second fixing method of the fixing member in the outdoor unit of FIG.
  • FIG. 7 is a view showing an example of a third fixing method of the fixing member in the outdoor unit of FIG.
  • FIG. 8 is a view showing an example of a fourth fixing method of the fixing member in the outdoor unit of FIG.
  • the fixing member 42 installs the temperature sensor 41 in the housing 10.
  • the fixing member 42 is formed in a flat plate shape, faces the measured member 43, and has a flat plate portion 42c to which the temperature sensor 41 is attached.
  • the material of the fixing member 42 is resin or metal.
  • the fixing member 42 is desirably made of a resin or the like having a low thermal conductivity, but may be made of a metal having a thermal conductivity higher than that of a resin.
  • the method of fixing the fixing member 42 to the housing 10 is performed, for example, by the following method. As shown in FIG. 5, the fixing member 42 has a bent portion 42d bent toward the back wall portion 10c at the upper portion of the flat plate portion 42c, and the bent portion 42d is screwed to the back wall portion 10c by a screw 45. As a result, the fixing member 42 is fixed to the housing 10. Alternatively, in the fixing member 42, the fixing member 42 is fixed to the housing 10 by welding the bent portion 42d to the back wall 10c. Alternatively, as shown in FIG.
  • the fixing member 42 has a bent portion 42 e bent toward the protective member 11 at the upper portion of the flat plate portion 42 c, and the bent portion 42 e is screwed to the protective member 11 by the screw 45.
  • the fixing member 42 is fixed to the housing 10.
  • the fixing member 42 is fixed to the housing 10 by welding the bent portion 42 e to the protective member 11.
  • the fixing member 42 has a bent portion 42 f bent toward the front wall portion 10 a at the upper portion of the flat plate portion 42 c, and the bent portion 42 f is attached to the top panel 10 e by the screw 45.
  • the fixing member 42 is fixed to the housing 10 by screwing.
  • the fixing member 42 is fixed to the housing 10 by welding the bent portion 42 f to the top panel 10 e.
  • the fixing member 42 has a hook-shaped portion 42 g bent toward the front wall portion 10 a at the upper portion of the flat portion 42 c.
  • the fixing member 42 is fixed to the housing 10 by the hook 42g being hooked on the heat exchanger 33 and the hook 42g being sandwiched between the heat exchanger 33 and the top panel 10e.
  • the measured member 43 is a member whose surface temperature changes according to the temperature of the outside air and whose surface temperature is detected by the temperature sensor 41.
  • the measured member 43 is installed outside the housing 10 so as to face the temperature sensor 41.
  • the member to be measured 43 has an attaching portion 43 a fixed to the protective member 11 and a measuring portion 43 b to be measured by the temperature sensor 41.
  • a measurement portion 43b formed in a rectangular shape and an attachment portion 43a formed smaller than the measurement portion 43b on the side of the measurement portion 43b are integrally formed.
  • the measuring member 43 only needs to have the measuring portion 43b, and the shape of the mounting portion 43a may be another shape.
  • the member to be measured 43 may be a simple-shaped component in which the attachment portion 43a and the measurement portion 43b are integrally formed into a flat plate having a single thickness.
  • the material of the member 43 to be measured is resin, ceramic or metal.
  • the temperature sensor 41 is attached to the fixing member 42 and installed in the housing 10 by the fixing member 42.
  • the flat plate portion 42c of the fixing member 42 is disposed between the suction side of the heat exchanger 33 and the back wall portion 10c, as shown in FIG.
  • the temperature sensor 41 is disposed on the outer wall 42 b of the fixing member 42 opposite to the inner side wall 42 a of the fixing member 42 facing the heat exchanger 33.
  • a gap of a distance LD is formed between the fixing member 42 and the heat exchanger 33.
  • the temperature sensor 41 has a portion for detecting the temperature facing the member 43 to be measured, the fixing member 42 fixes a part of the temperature sensor 41, and the temperature sensor 41 and the heat exchanger 33 You may touch.
  • the member 43 to be measured is attached to the grid-like portion 11 b of the protective member 11 and is installed outside the housing 10 outside the back wall 10 c in the depth direction (Y-axis direction) of the housing 10.
  • the temperature sensor 41 can directly measure the temperature of the measured member 43. In order to do this, an opening may be formed in the back wall 10c.
  • FIG. 9 is a schematic cross-sectional view in which design dimensions are described in the outdoor unit 100 of FIG. 4.
  • the distance LA represents the distance between the heat exchanger 33 and the outer surface of the measured member 43 in the depth direction (Y-axis direction) of the outdoor unit 100.
  • the outer surface of the member 43 to be measured is the wall 43d constituting the member 43 to be measured, and the wall 43d is opposite to the wall 43c constituting the surface of the member 43 to be measured facing the temperature sensor 41. Configure the side face.
  • the wall 43 d of the member to be measured 43 is disposed at a position farthest away from the housing 10 among the temperature sensor 41, the fixing member 42, and the member to be measured 43.
  • the distance LB represents the distance between the heat exchanger 33 and the member 43 to be measured in the depth direction (Y-axis direction) of the outdoor unit 100, and the outside temperature is measured by the side portion of the heat exchanger 33 and the temperature sensor 41. Represents the distance between the part to be detected.
  • the distance LD represents the distance between the heat exchanger 33 and the fixing member 42 in the depth direction (Y-axis direction) of the outdoor unit 100.
  • the heat exchanger 33 and the fixing member 42 may be in contact with each other. Therefore, the distance LD between the heat exchanger 33 and the fixing member 42 may be zero.
  • Distance LE represents a thickness dimension in which temperature sensor 41 and fixing member 42 are combined in the depth direction (the Y-axis direction) of outdoor unit 100.
  • the distance LF represents the distance between the temperature sensor 41 and the inner wall of the back wall 10c in the depth direction (Y-axis direction) of the outdoor unit 100, and how much the temperature sensor 41 is inside from the housing 10 Is a distance representing
  • the distance LG is a distance between the outer wall of the back wall 10 c and the member 43 in the depth direction (the Y-axis direction) of the outdoor unit 100, and the housing 10 has a measurement surface of the member 43 to be measured. It is a distance that indicates what needs to be installed outside.
  • FIG. 10 is a schematic cross-sectional view describing design dimensions of a conventional outdoor unit 150 provided with a contact-type temperature sensor.
  • An example of the outdoor unit 100 according to Embodiment 1 of the present invention will be described using FIG. 10 in comparison with an example of the outdoor unit 150 including the contact-type outside air temperature sensor.
  • the heat exchanger 133 is installed in the housing 110 as in the outdoor unit 100.
  • the outdoor unit 150 has a temperature sensor 141 and a fixing member 142.
  • the outdoor unit 100 and the outdoor unit 150 differ in the configuration of the temperature detection portion, and the positional relationship between the heat exchanger and the casing is the same.
  • the temperature sensor 141 is a contact-type temperature sensor such as a thermistor.
  • the fixing member 142 is formed in a flat plate shape, and fixes the temperature sensor 141 to the outside of the housing 10 in order to avoid the influence of the radiation heat by the heat exchanger 133.
  • the temperature sensor 141 is installed inside the fixing member 142, as shown in FIG.
  • the distance PB shown in FIG. 10 represents the distance between the heat exchanger 133 and the temperature sensor 141 in the depth direction (Y-axis direction) of the outdoor unit 150. Since the temperature sensor 141 is a contact type temperature sensor, the temperature sensor 141 is disposed at an appropriate distance not affected by radiation heat from the heat exchanger 133.
  • Distance PC represents the distance between heat exchanger 133 and fixing member 142 in the depth direction (the Y-axis direction) of outdoor unit 150.
  • the fixing member 142 is also disposed at an appropriate distance not affected by radiation heat from the heat exchanger 133 in order to dispose the contact-type temperature sensor 141 inside.
  • the temperature sensor 141 is disposed inside the fixing member 142.
  • Distance PD represents the distance between the outer wall of fixing member 142 and temperature sensor 141 in the depth direction (the Y-axis direction) of outdoor unit 150.
  • the distance PD represents the thickness dimension between the outer wall and the temperature sensor 141 on the wall of the fixing member located opposite to the wall of the fixing member facing the housing 110.
  • the distance PE represents the distance between the outer walls constituting the temperature sensor 141 in the depth direction (Y-axis direction) of the outdoor unit 150, and represents the thickness dimension of the temperature sensor 141.
  • Distance PF represents the distance between the outer wall of fixing member 142 and temperature sensor 141 in the depth direction (the Y-axis direction) of outdoor unit 150, and in the wall portion of fixing member 142 facing housing 110, The thickness dimension between the temperature sensor 141 is shown.
  • the distance PA represents the distance between the heat exchanger 133 and the outer surface portion of the fixing member 142 in the depth direction (Y-axis direction) of the outdoor unit 150.
  • the outer side surface portion of the fixing member 142 is the wall portion 142 b constituting the fixing member 142, and the wall portion 142 b is on the opposite side to the wall portion 142 a constituting the surface facing the heat exchanger 133 of the fixing member 142. Construct a face.
  • the wall portion 142 b of the fixing member 142 is disposed at a position farthest from the housing 10 in the temperature sensor 141 and the fixing member 142.
  • the distance LC can be designed as the distance PD.
  • distance LA distance PA
  • distance LA distance LB + distance LC
  • distance PA distance PB + distance PD + distance PE
  • the distance PE becomes the thickness dimension of the temperature sensor 141, and distance LB> distance PB. Therefore, the outdoor unit 100 takes a distance from the heat exchanger 33 to the measurement point, and the measurement point is less affected by the radiant heat of the heat exchanger 33, and the detection accuracy of the outside air temperature is improved.
  • the distance LA the distance LB + the distance LC
  • the distance LC can be designed as the distance PD.
  • the outdoor unit 100 can reduce the distance LA between the heat exchanger 33 and the outer surface portion of the member 43 to be measured, and the dimension of the part that protrudes most out of the housing 10 is the housing of the outdoor unit 150 It can be made smaller compared to the size of the portion that protrudes most from 110. Therefore, the outdoor unit 100 can have a smaller number of projecting portions as compared with the outdoor unit 150, and the installation space can be reduced.
  • FIG. 11 is a schematic view showing a configuration example of the air conditioner 1 using the outdoor unit 100 according to Embodiment 1 of the present invention.
  • the solid arrows indicate the flow of the refrigerant during the cooling operation of the air conditioner 1
  • the dotted arrows indicate the flow of the refrigerant during the heating operation of the air conditioner 1.
  • the air conditioner 1 of FIG. 11 includes an outdoor unit 100 and an indoor unit 200.
  • the outdoor unit 100 and the indoor unit 200 are connected by piping through a refrigerant pipe 300 and a refrigerant pipe 400.
  • the compressor 31, the flow path switching device 32, the heat exchanger 33, the expansion valve 34, and the indoor heat exchanger 35 are sequentially connected via a refrigerant pipe.
  • the air conditioner 1 can switch and realize the heating operation or the cooling operation by switching the flow of the refrigerant using the flow path switching device 32 of the outdoor unit 100.
  • the structure of the air conditioner 1 shown in FIG. 11 is an example, For example, a muffler, an accumulator, etc. may be provided in the air conditioner 1 of FIG.
  • the outdoor unit 100 includes a compressor 31, a flow path switching device 32, a heat exchanger 33, and an expansion valve 34.
  • the compressor 31 compresses and discharges the sucked refrigerant as described above.
  • the flow path switching device 32 is, for example, a four-way valve, and is a device that switches the direction of the flow path of the refrigerant.
  • the air conditioner 1 can realize the heating operation or the cooling operation by switching the flow of the refrigerant using the flow path switching device 32.
  • the heat exchanger 33 exchanges heat between the refrigerant and air (air outside the room).
  • the heat exchanger 33 functions as an evaporator during the heating operation to evaporate and evaporate the refrigerant.
  • the heat exchanger 33 functions as a condenser during the cooling operation to condense and liquefy the refrigerant.
  • a blower 36 is provided in the vicinity of the heat exchanger 33 so as to face the heat exchanger 33.
  • the expansion valve 34 is a throttling device (flow rate control means), functions as an expansion valve by adjusting the flow rate of the refrigerant flowing through the expansion valve 34, and reduces the pressure of the refrigerant flowing therein.
  • the expansion valve 34 is configured by an electronic expansion valve or the like, the opening degree adjustment is performed based on an instruction from a control device (not shown) or the like.
  • the indoor unit 200 has an indoor heat exchanger 35.
  • the indoor heat exchanger 35 exchanges heat between the air to be air-conditioned and the refrigerant.
  • the indoor heat exchanger 35 functions as a condenser during heating operation to condense and liquefy the refrigerant. Further, the indoor heat exchanger 35 functions as an evaporator during the cooling operation to evaporate and evaporate the refrigerant.
  • an indoor fan 37 is provided to face the indoor heat exchanger 35.
  • the outdoor unit 100 indirectly detects the outside air temperature by the temperature sensor 41 measuring the temperature of the member 43 to be measured. Therefore, the outside air temperature can be measured without being affected by the radiant heat of the heat exchanger and the transferred heat of the fixing member 42 of the temperature sensor.
  • the outdoor unit 100 indirectly detects the outside temperature by the temperature sensor 41 measuring the temperature of the member 43 to be measured. Therefore, there is no need to form a gap between the temperature sensor 41 and the fixing member 42, and the heat exchanger 33, and the capacity of the housing 10 can be reduced. Further, the outdoor unit 100 can install the temperature sensor 41 and the fixing member 42 in the housing 10, and the measuring part 43b of the member 43 to be measured installed outside the housing 10 may have a simple shape. It is also possible to save space by reducing the part that pops out.
  • a contact-type temperature sensor such as a thermistor
  • the temperature sensor may be installed outside the casing, or the fixing member may be made of a material having a low thermal conductivity so that the temperature sensor is not affected by the heat generated by the heat exchanger. Special design considerations are required to protect the
  • the outdoor unit 100 indirectly detects the outside air temperature by the temperature sensor 41 measuring the temperature of the member 43 to be measured. Therefore, the outdoor unit 100 does not require design consideration for installation so that the temperature sensor 41 is not affected by the heat generated by the heat exchanger 33, and the material of the fixing member 42 has high thermal conductivity such as metal. The use of parts is also possible, and the degree of freedom in the design of the outdoor unit 100 is improved.
  • the indoor unit of the air conditioner is provided with a radiation temperature sensor and the outside air temperature is measured indirectly by a non-contact sensor on the surface temperature of the window or the wall.
  • the window or wall must be the object to be measured, and the distance between the temperature sensor and the object to be measured may be large, and the temperature detection accuracy may be degraded.
  • the outdoor unit 100 indirectly detects the outside air temperature by measuring the temperature of the measured member 43 to which the temperature sensor 41 is attached to the protective member 11.
  • the outdoor unit 100 can maintain the detection accuracy of the temperature because the distance between the temperature sensor and the object to be measured is not too large as compared with the case where the window or the wall is the object to be measured. Further, the outdoor unit 100 can raise the detection accuracy of the outside air temperature by installing the measured member 43 on the outside of the housing 10 and directly touching the outside air.
  • the embodiment of the present invention is not limited to the above embodiment.
  • the temperature measurement device 40 is disposed to face the upper left portion of the heat exchanger 33, but the installation position of the temperature measurement device 40 is not limited to this position.
  • the temperature measuring device 40 may be disposed on the grid portion 11 b of the protective member 11, and may be disposed to face other portions such as the central portion and the lower right portion of the heat exchanger 33.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

L'invention concerne une unité extérieure comprenant : un boîtier constituant l'enveloppe externe de l'unité extérieure ; un échangeur de chaleur disposé à l'intérieur du boîtier ; un capteur de température sans contact positionné sur un côté d'admission de l'échangeur de chaleur et disposé à l'intérieur du boîtier ; et un élément à mesurer disposé sur l'extérieur du boîtier de manière à faire face au capteur de température, dont la température de surface change en conséquence de la température de l'air extérieur et dont la température de surface est détectée par le capteur de température.
PCT/JP2017/029266 2017-08-14 2017-08-14 Unité extérieure et climatiseur WO2019035154A1 (fr)

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PCT/JP2017/029266 WO2019035154A1 (fr) 2017-08-14 2017-08-14 Unité extérieure et climatiseur
JP2019536357A JP6727445B2 (ja) 2017-08-14 2017-08-14 室外機及び空気調和機

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PCT/JP2017/029266 WO2019035154A1 (fr) 2017-08-14 2017-08-14 Unité extérieure et climatiseur

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JP2003130397A (ja) * 2001-10-19 2003-05-08 Fujitsu General Ltd 空気調和機の室外機
JP2011123628A (ja) * 2009-12-09 2011-06-23 Nippon Conlux Co Ltd 自動販売機の照明装置、自動販売機および光色制御方法
JP2011174658A (ja) * 2010-02-24 2011-09-08 Daiken Corp 床冷暖房装置及び床冷暖房装置の制御方法

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JPH11159843A (ja) * 1997-11-28 1999-06-15 Matsushita Electric Ind Co Ltd 空気調和機の外気温度表示制御方法
WO2015033459A1 (fr) * 2013-09-09 2015-03-12 三菱電機株式会社 Système de commande de conditionnement d'air

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