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WO2018164434A1 - Unité extérieure de climatiseur - Google Patents

Unité extérieure de climatiseur Download PDF

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Publication number
WO2018164434A1
WO2018164434A1 PCT/KR2018/002592 KR2018002592W WO2018164434A1 WO 2018164434 A1 WO2018164434 A1 WO 2018164434A1 KR 2018002592 W KR2018002592 W KR 2018002592W WO 2018164434 A1 WO2018164434 A1 WO 2018164434A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat exchanger
outdoor unit
differential pressure
outdoor
air
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/KR2018/002592
Other languages
English (en)
Korean (ko)
Inventor
신일융
송치우
윤필현
이지성
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
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 LG Electronics Inc filed Critical LG Electronics Inc
Publication of WO2018164434A1 publication Critical patent/WO2018164434A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • F24F1/56—Casing or covers of separate outdoor units, e.g. fan guards
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/41—Defrosting; Preventing freezing
    • F24F11/42—Defrosting; Preventing freezing of 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
    • F24F2110/00—Control inputs relating to air properties
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/40—Pressure, e.g. wind pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/11—Sensor to detect if defrost is necessary

Definitions

  • the present invention relates to an outdoor unit of an air conditioner.
  • An air conditioner is a home appliance for maintaining indoor air in a state most suitable for use and purpose. For example, in summer, the room is adjusted to cool air condition, and in winter, the room is controlled to warm heating condition. In addition, it is possible to adjust the humidity of the room and to control the indoor air in a comfortable clean state.
  • the air conditioner is driven by a refrigeration cycle for performing the compression, condensation, expansion and evaporation process of the refrigerant, it is possible to perform the cooling or heating operation of the indoor space.
  • Such an air conditioner may be classified into a separate type air conditioner installed separately from the indoor unit and the outdoor unit, and an integrated air conditioner installed together with the indoor unit and the outdoor unit in one cabinet.
  • An indoor heat exchanger for exchanging heat with the bet is disposed in the indoor unit, and an outdoor heat exchanger for exchanging heat with the outside is disposed in the outdoor unit.
  • the outdoor heat exchanger When the air conditioner performs the cooling operation, the outdoor heat exchanger functions as a condenser and the indoor heat exchanger functions as an evaporator. In addition, when the air conditioner performs heating operation, the outdoor heat exchanger functions as an evaporator, and the indoor heat exchanger functions as a condenser.
  • the frost is generated on the surface of the outdoor heat exchanger functioning as the evaporator by the relatively low outside air temperature.
  • the surface temperature of the outdoor heat exchanger or the refrigerant temperature flowing through the outdoor heat exchanger should be lower than the outdoor air temperature.
  • An object of the present invention has been proposed to solve this problem, to provide an outdoor unit of an air conditioner having a device for accurately measuring whether the occurrence of the outdoor heat exchanger.
  • Another object of the present invention is to provide an outdoor unit of an air conditioner having a simple configuration and having a differential pressure measuring device installed inside the outdoor unit.
  • the outdoor unit of the air conditioner includes a casing, an outdoor heat exchanger installed inside the casing, and a differential pressure measuring device for measuring a differential pressure of air passing through the outdoor heat exchanger.
  • a first inlet installed in the casing, a second inlet installed on one side of the outdoor heat exchanger and the first inlet and the second inlet to measure the pressure of the air passing through the outdoor heat exchanger It includes a differential pressure sensor for measuring the differential pressure of the pressure measured in.
  • the outdoor heat exchanger and the outdoor air may further include a blowing fan forcing convection of outdoor air and a shroud provided outside the blowing fan, and the first inlet may be installed outside the shroud.
  • the differential pressure sensor may be installed in the control box disposed inside the casing.
  • the differential pressure measuring apparatus may further include a first hose connecting the first intake unit and the differential pressure sensor and a second hose connecting the second intake unit and the differential pressure sensor.
  • the control box may include a through hole opened at one side such that the first hose and the second hose pass therethrough.
  • the control box may include an extension extending toward the outdoor heat exchanger to fix the second hose.
  • the first inlet and the second inlet are provided in a cylindrical shape having an internal space, and the first inlet and the second inlet have upper surfaces located on the upstream side in the flow direction of air and the flow of air.
  • a lower surface positioned downstream in the same direction and a side connecting the upper surface and the lower surface may be included.
  • the upper surface may be provided to close the inner space of the mouthpiece
  • the lower surface may be provided to communicate with the inner space of the mouthpiece
  • the mouth portion may further include at least one inlet formed in the side surface so as to communicate with the inner space.
  • the intake unit may further include a first guide and a second guide for guiding the flow of air to the inlet, and the inlet may be disposed between the first guide and the second guide.
  • the first guide and the second guide may be provided in the shape of a cockle formed at a predetermined angle along the circumference of the mouthpiece.
  • the outdoor heat exchanger it is possible to determine whether or not the outdoor heat exchanger is generated by calculating the differential pressure of the air passing through the outdoor heat exchanger.
  • the number and operation time of the defrosting operation performed when the outdoor heat exchanger is generated can be shortened, and the heating duration and heating efficiency of the air conditioner can be increased.
  • the differential pressure measuring device for calculating the differential pressure of the outdoor heat exchanger is installed inside the indoor unit, it is possible to prevent freezing or moisture penetration caused by exposure to the outside.
  • FIG. 1 is a view showing the outdoor unit of the air conditioner according to an embodiment of the present invention.
  • FIG. 2 is an exploded view illustrating components constituting an appearance of an outdoor unit of an air conditioner according to an embodiment of the present invention.
  • FIG. 3 is a top view illustrating an interior of an outdoor unit of an air conditioner according to an embodiment of the present invention.
  • Figure 4 is a perspective view showing the inside of the outdoor unit of the air conditioner according to an embodiment of the present invention.
  • FIG. 5 is a diagram illustrating a control box and a differential pressure measuring apparatus of an outdoor unit of an air conditioner according to an embodiment of the present invention.
  • FIG. 6 is a diagram illustrating a differential pressure measuring device of an outdoor unit of an air conditioner according to an embodiment of the present invention.
  • FIG 7 and 8 are views showing the mouth of the differential pressure measuring apparatus of the outdoor unit of the air conditioner according to an embodiment of the present invention.
  • FIG. 9 is a view showing the flow of air in the mouth of the differential pressure measuring device of the outdoor unit of the air conditioner according to an embodiment of the present invention.
  • FIG. 1 is a view showing the outdoor unit of the air conditioner according to an embodiment of the present invention
  • Figure 2 is an exploded view showing the components constituting the appearance of the outdoor unit of the air conditioner according to an embodiment of the present invention
  • 3 is a top view illustrating the interior of an outdoor unit of an air conditioner according to an embodiment of the present invention.
  • the air conditioner according to an embodiment of the present invention, an outdoor unit 1 that is disposed outdoors and an indoor unit (not shown) connected to the outdoor unit 1 by a refrigerant pipe and disposed indoors Included.
  • the indoor unit includes an indoor heat exchanger (not shown) that exchanges heat with air in an indoor space.
  • the outdoor unit 1 is provided with a casing which forms an overall appearance.
  • the casing includes a top cover 10, an out panel 30, a base fan 40, and a side supporter 20.
  • the top cover 10 is provided on an upper surface of the outdoor unit 1 to form an outer appearance of the upper surface of the outdoor unit 1, and a pair of discharge ports 11 are formed on the top cover 10 to form the top cover 10.
  • the heat exchanged air inside the outdoor unit 1 is discharged to the outside of the outdoor unit 1.
  • a discharge grill 12 is mounted in the discharge port 11 to prevent foreign substances from flowing into the discharge hole 11.
  • the four sides of the outdoor unit 1 is provided with a side supporter 20.
  • the side supporter 20 may be bent to form a corner portion of the outdoor unit 1 by connecting the top cover 10 and the base fan 40, or may be formed in a pipe shape.
  • an out panel 30 is provided between the side supporters 20 to form an outer appearance of a circumferential surface of the outdoor unit 1.
  • the side supporter 20 may be formed between the out panels 30 connected to the side supporters 20, and form an inclined surface between the out panels 30 to form the inclined surface of the outdoor unit 1.
  • the corner portion may be formed to have an inclined surface.
  • the out panel 30 includes a pair of side panels 31 which form left and right sides of the outdoor unit 1, a front panel 34 which forms a front surface of the outdoor unit 1, and the outdoor unit 1. It may be composed of a rear panel 32 forming a rear of the.
  • the side panel 31 forms a left side and a right side of the outdoor unit 1, and connects the neighboring side supporters 20, the base fan 40, and the top cover 10. It can be formed in the shape of a plate.
  • An upper portion of the side panel 31, that is, an area corresponding to the shroud 90 inside the outdoor unit 1 is shielded, and a plurality of suction ports 311 may be formed in the remaining areas below the shielded area. Can be.
  • the intake port 311 is uniformly formed throughout the region where the outdoor heat exchanger 55 for exchanging heat with the sucked air is located, and guides the air sucked from the side to pass through the outdoor heat exchanger 55. .
  • the arrangement of the intake port 311 formed in the side panel 31 may also vary according to the structure and arrangement of the outdoor heat exchanger 55, and the intake port 311 may be different from the outdoor heat exchanger 55.
  • a portion which is disposed in a corresponding area and which does not correspond to the outdoor heat exchanger 55 is shielded and configured such that all of the sucked air passes through the outdoor heat exchanger 55.
  • side panel coupling portions 312 that are bent to be coupled to the side supporter 20 are further formed at left and right side ends of the side panel 31.
  • the side panel coupler 312 is bent into the outside of the outdoor unit 1 and then bent outward at the extended end to have a structure capable of engaging with the coupler 223 provided in the side supporter 20.
  • An upper portion of the side panel 31, that is, an area corresponding to the shroud 90 inside the outdoor unit 1 is shielded, and a plurality of suction ports 311 may be formed in the remaining areas below the shielded area. Can be.
  • the rear panel 32 is provided at a portion corresponding to a portion where the shroud 90 is located.
  • a suction grill 33 is formed from the lower end of the rear panel 32 to the base pan 40.
  • the suction grill 33 is provided in a lattice shape by a plurality of wires to form a plurality of suction ports 331.
  • the suction grill 33 is formed to have a size corresponding to that of the outdoor heat exchanger 55 located at the rear of the outdoor unit 1. Therefore, the suction grill 33 protects the outdoor heat exchanger 55 from external shocks or foreign substances and at the same time allows the inflow of external air.
  • a plurality of front panels 34 are provided at the front of the outdoor unit 1.
  • the front panel 34 may include a service panel 35, a piping panel 36, and a suction panel 37.
  • the front surface of the outdoor unit 1 is divided into left and right sides on the basis of the point where the outdoor heat exchanger 55 extends. That is, the service panel 35 and the piping panel 36 may be provided on the left side of the outdoor unit 1, and the suction panel 37 may be provided on the right side of the outdoor unit 1.
  • the service panel 35 is disposed at a position corresponding to the extended end of the outdoor heat exchanger 55 at the left end of the outdoor unit 1.
  • the service panel 35 is configured to be detachably detached in a state where all of the front panel 34 is mounted. Thus, by detaching the service panel 35, the internal components of the outdoor unit 1 can be accessed.
  • the entire control box 56 may be exposed to the front, and each component constituting the refrigeration cycle and the refrigerant pipe connecting them may be easily accessed.
  • the piping panel 36 is for passing and fixing the indoor unit connecting pipe connecting the outdoor unit 1 and the indoor unit, and is provided between the lower end of the service panel 35 and the base fan 40.
  • the piping panel 36 is formed to have the same width as the service panel 35, and the service panel 35 may be separated while the piping panel 36 is fixedly mounted to the base fan 40. It is formed to be.
  • the pipe panel 36 is provided with a pipe installation hole 361 through which a plurality of indoor unit connection pipes that can be connected to the indoor unit pass.
  • a service valve is installed in the pipe installation hole 361 to facilitate connection and installation of the indoor unit connecting pipe connected to the indoor unit.
  • the piping panel 36 may be integrally formed with the service panel 35 as necessary.
  • the suction panel 37 forms the remaining front appearance of the outdoor unit 1 except for the service panel 35 and the piping panel 36.
  • the suction panel 37 may extend from the top cover 10 to the base fan 40, and may extend from the side supporter 20 to the service panel 35 and the piping panel 36.
  • the suction panel 37 may extend to an end of the outdoor heat exchanger 55, and the coupling plate 57 is disposed inside the outdoor unit 1 to fix an end of the outdoor heat exchanger 55. And ends of the suction panel 37 are coupled to each other. Therefore, the outdoor heat exchanger 55 can maintain a stable fixed state by the suction panel 37.
  • the suction panel 37 is also formed to shield the upper portion corresponding to the position of the shroud 90, and a plurality of suction ports 371 are formed in the remaining area corresponding to the area of the outdoor heat exchanger 55 to the outside. Allow air to flow to the outdoor heat exchanger 55 side.
  • front panel coupling parts 341 which are bent to be coupled to the side supporter 20 or another adjacent front panel 34 are further formed at left and right sides of each panel constituting the front panel 34. do.
  • the front panel coupler 341 is bent inwardly of the outdoor unit 1 and then bent outward at an extended end to have a structure capable of engaging with the coupler 223 of the side supporter 20 to be described below. .
  • the outdoor unit 1 has a bottom surface formed by the base fan 40.
  • the outdoor unit 1 may be supported by the base frame 41 while being spaced apart from the floor.
  • a configuration such as a compressor 51 and an outdoor heat exchanger 55 may be disposed on the upper surface of the base fan 40.
  • the compressor 51 may be provided on an upper surface of the base frame 41.
  • the compressor 51 is to allow the refrigerant in the gas state to be compressed at a high temperature and high pressure, a constant speed compressor that rotates at a constant speed and compresses to a predetermined capacity, and an inverter capable of adjusting the compression capacity by changing a rotational speed according to a load
  • Each compressor may be provided.
  • the refrigerant pipe connected to the outlet of each of the compressors 51 is provided with an oil separator 52 for separating oil contained in the refrigerant discharged from the compressor 51 to separate oil from the refrigerant discharged again. It is comprised so that recovery by the compressor 51 is possible.
  • a four-way valve may be provided at one side of the outdoor unit 1 to selectively supply the refrigerant passing through the oil separator 52 to an indoor heat exchanger (not shown) or an outdoor heat exchanger 55. 53 is provided.
  • the four-way valve 53 is connected to the indoor heat exchanger and the outdoor heat exchanger 55, the compressor 51, and the accumulator 54, respectively, and the refrigerant discharged from the compressor 51 is cooled according to a cooling operation or a heating operation. It is configured to switch the flow path to be selectively supplied to the indoor heat exchanger and the outdoor heat exchanger (55).
  • the accumulator 54 is configured to be connected to the indoor heat exchanger and the four-way valve 53 at one side of the base fan 40.
  • the accumulator 54 separates the incoming liquid refrigerant and the gaseous refrigerant so that the liquid refrigerant is stored and the gaseous refrigerant can be supplied to the compressor 51.
  • the outdoor heat exchanger 55 allows the outdoor air and the refrigerant to exchange heat, and allows the outdoor air to exchange heat with the refrigerant by forcibly passing through the outdoor heat exchanger 55 by the blower fan 80.
  • the outdoor heat exchanger 55 is formed along the circumference of the base fan 40, and is disposed over four surfaces of the outdoor unit 1. In this case, both ends of the outdoor unit 1 are disposed to be spaced apart from each other at the corner portions formed on the left side and the front surface of the outdoor unit 1 to form a predetermined space. In addition, the space between the both ends of the outdoor unit 1 is opened when the service panel 35 is separated, and through this space, various pipes constituting the refrigeration cycle and the control box 56 are accessible.
  • the outdoor heat exchanger 55 may extend from the base fan 40 to a height adjacent to the blower fan 80. Therefore, the outdoor heat exchanger 55 is formed to cover all of the intake ports 311, 331, 371 inside the outdoor unit 1, and all air passing through the intake ports 311, 331, 371 covers the outdoor heat exchanger 55. Allow it to pass.
  • a shroud 90 is mounted on an inner upper portion of the outdoor unit 1, and a blowing fan 80 is provided on the inner side of the shroud 90.
  • the shroud 90 is for guiding the discharged air, is opened in the vertical direction, and the side surface is formed to be rounded in a shape recessed in the center thereof, and the opening is widened from the center portion to the upper portion.
  • the opened upper surface of the shroud 90 may have the same shape as the discharge port 11 so that the discharge air can be effectively guided to the discharge port 11.
  • the flow of air is introduced into the outdoor unit 1 through the suction ports 311, 331, 371 provided on the side of the outdoor unit 1.
  • the outdoor heat exchanger 55 is disposed to correspond to the suction ports 311, 331, and 371, and is discharged to the outside of the outdoor unit 1 through the discharge port 11 provided on the outdoor unit 1.
  • the outdoor heat exchanger 55 and the outdoor air may be heat exchanged.
  • the outdoor heat exchanger 55 functions as a condenser and discharges heat to outdoor air.
  • the outdoor heat exchanger 55 functions as an evaporator and takes heat of the outdoor air.
  • the outdoor heat exchanger 55 When the outdoor heat exchanger 55 functions as an evaporator, condensed water generated on the surface of the outdoor heat exchanger 55 may freeze, thereby generating an idea.
  • the air conditioner When the concept of the outdoor heat exchanger 55 is detected, the air conditioner performs a defrosting operation.
  • the defrosting operation corresponds to reverse cycle operation, that is, the cooling operation, and the outdoor heat exchanger 55 functions as a condenser to remove the frosting.
  • the defrosting operation corresponds to the cooling operation that can only be performed when the heating operation is required, and therefore, the defrosting operation may be performed at a minimum. Therefore, it is important to reliably detect the idea of the outdoor heat exchanger 55.
  • a description will be given of a device for measuring the occurrence of the frost of the outdoor heat exchanger 55.
  • Figure 4 is a perspective view showing the inside of the outdoor unit of the air conditioner according to an embodiment of the present invention.
  • the outdoor unit 1 includes a differential pressure measuring device 100 for measuring whether or not the outdoor heat exchanger 55 is implanted.
  • the differential pressure measuring device 100 is a device for measuring the differential pressure between the spaced apart, it may be used for other purposes in addition to the occurrence of implantation.
  • the differential pressure is measured by comparing the pressure before passing through the outdoor heat exchanger 55 with the pressure after passing through the outdoor heat exchanger 55 through the differential pressure measuring device 100.
  • the differential pressure is measured to be higher than when frosting does not occur. Therefore, when the differential pressure is greater than or equal to the predetermined pressure, defrosting operation can be performed.
  • the differential pressure measuring apparatus 100 may measure the pressure before passing through the outdoor heat exchanger 55 and the pressure after passing through the outdoor heat exchanger 55. Therefore, the differential pressure measuring apparatus 100 includes a first inlet 120 and a second inlet 140 to be installed to measure the pressure of a specific place.
  • the first mouthpiece 120 and the second mouthpiece 140 may be disposed at various positions.
  • the first intake 120 or the second intake 140 to measure the pressure outside the outdoor unit (1).
  • the first opening 120 or the second opening 140 must be disposed outside the outdoor unit 1. Accordingly, a problem may occur such that water penetrates or freezes into the first mouthpiece 120 or the second mouthpiece 140.
  • the differential pressure measuring device 100 including the first mouthpiece 120 and the second mouthpiece 140 is disposed inside the outdoor unit 1.
  • the first opening 120 is located between the shroud 90, that is, outside the shroud 90.
  • the pressure before passing through the outdoor heat exchanger 55 may be replaced by measuring the same value as the atmospheric pressure, the value measured by the first intake unit 120 may be changed to It can be understood as the pressure before passing.
  • the second mouth 140 may be installed at one side of the outdoor heat exchanger 55. In detail, it is disposed on the inner side surface of the outdoor heat exchanger 55 so that the pressure immediately after the outdoor air passes through the outdoor heat exchanger 55 can be measured.
  • the installation position of the first cover part 120 and the second cover part 140 described above may vary depending on the internal shape of the outdoor unit 1.
  • the differential pressure measuring device 100 is installed inside the outdoor unit 1, and the first intake unit 120 is positioned to measure atmospheric pressure, and the second intake unit 140 is located outdoors. It is located on one side of the heat exchanger 55.
  • the efficiency and efficiency can be increased by reducing the number and time of defrosting operation and increasing the heating continuous operation time.
  • FIG 5 is a view showing a control box and a differential pressure measuring device of the outdoor unit of the air conditioner according to an embodiment of the present invention
  • Figure 6 is a differential pressure measuring apparatus of the outdoor unit of the air conditioner according to an embodiment of the present invention. Figure is shown.
  • the differential pressure measuring apparatus 100 includes the first intake part 120 and the second intake part 140 for measuring the pressures of the locations spaced apart from each other.
  • the differential pressure measuring apparatus 100 further includes a differential pressure sensor 110 for measuring the differential pressure between the first mouthpiece 120 and the second mouthpiece 140.
  • the absolute differential pressure may not be measured at the first intake unit 120 and the second intake unit 140.
  • the differential pressure at the position where the mouthpiece 149 is installed can be calculated.
  • the differential pressure sensor 110 may calculate the difference by measuring absolute pressures of the first and second mouthpieces 120 and 140.
  • the differential pressure sensor 110 may be installed in the control box 56.
  • the differential pressure sensor 110 may be connected to the PCB disposed inside the control box 56. That is, as the differential pressure sensor 110 is installed inside the control box 56, information about the differential pressure may be more easily transmitted to the controller.
  • the differential pressure measuring apparatus 100 includes a first hose 130 connecting the differential pressure sensor 110 and the first inlet 120, and the differential pressure sensor ( A second hose 150 connecting the 110 and the second mouth 140 is included.
  • the differential pressure sensor 110 and the first and second intake parts 120 and 140 may include a connection part connected to the first and second hoses 130 and 150.
  • the first hose 130 and the second hose 150 has a passage through which air flows. That is, the first hose 130 and the second hose 150 serves as a moving passage of air.
  • the first hose 130 and the second hose 150 may be provided as a flexible hose to increase the degree of freedom of installation of the differential pressure measuring apparatus 100.
  • the differential pressure sensor 110 is disposed inside the control box 56, and the first intake part 120 is disposed outside the shroud 90. Therefore, the first hose 130 extends toward the shroud 90 in the control box 56.
  • a through hole 56a through which a wire passes is provided at one side of the control box 56.
  • 5 exemplarily illustrates a through hole 56a formed on the bottom surface of the control box 56. Accordingly, one end of the first hose 130 is coupled to the differential pressure sensor 110 and extends through the through hole 56a to the outside of the control box 56.
  • first hose 130 extends to the shroud 90 disposed above the outdoor unit 1.
  • first hose 130 since the first hose 130 is made of a flexible material, the first hose 130 may be extended so as not to interfere with devices disposed in the outdoor unit 1.
  • first hose 130 may be fixed to one side of the shroud 90, the out panel 30, or the like, and the first mouth part 120 is coupled to the other end thereof.
  • One end of the second hose 150 is also coupled to the differential pressure sensor 110 and extends through the through hole 56a to the outside of the control box 56.
  • the control box 56 may further include an extension 56b extending toward the outdoor heat exchanger 55 to fix the second hose 150.
  • the second mouth part 120 is coupled to the other end of the second hose 150 fixed by the extension part 56b.
  • the extension part 56b is provided because the second inlet part 140 is installed as close as possible to the outdoor heat exchanger 55 so as to measure a more accurate differential pressure. Therefore, the extension 56b is an exemplary configuration and can fix the second hose 150 by the internal configuration of the outdoor unit 1.
  • first mouthpiece 120 and the second mouthpiece 140 may be provided in the same shape, and the first mouthpiece 120 will be described as an example.
  • first mouthpiece 120 is called a mouthpiece
  • first hose 130 is called a hose.
  • FIG 7 and 8 are views showing the mouth of the differential pressure measuring apparatus of the outdoor unit of the air conditioner according to an embodiment of the present invention.
  • the mouth portion 120 is provided in a cylindrical shape having an internal space. That is, the mouthpiece 120 has a flat upper surface 120a and a lower surface 120b, and has a side surface 120c connecting the upper surface 120a and the lower surface 120b.
  • the upper surface (120a) is located on the upstream side in the flow direction of air
  • the lower surface (120b) means a surface located on the downstream side in the flow direction of air. Therefore, the installation direction of the mouthpiece 120 is not fixed by the upper surface 120a and the bottom surface 120b, and the mouthpiece 120 may be installed according to the flow direction of air.
  • the upper surface 120a is provided to close the internal space of the mouthpiece 120
  • the lower surface 120b is provided to communicate with the interior space of the mouthpiece 120. That is, one end of the mouthpiece 120 is closed, the other end is open.
  • the other end of the opening 120, the lower portion in the drawing is provided with a hose coupling portion 122 is coupled to the hose 130.
  • the hose coupling part 122 is provided to correspond to the size of the hose 130.
  • the hose 130 may be inserted into the hose coupling portion 122 or may be coupled to surround the hose coupling portion 122. Air may flow into the hose 130 through the open lower surface 120b.
  • hose coupling portion 122 may be provided with a mesh (mesh) to prevent the inflow of foreign matter or an o-ring (o-ring) to prevent the leakage of air.
  • mesh mesh
  • o-ring o-ring
  • the intake unit 120 includes an inlet 128 formed in the side surface 120c to communicate with the internal space of the intake unit 120.
  • the inlet 128 may be divided into a plurality of portions along the circumference of the side surface 120c.
  • the inlet 128 may be provided in various sizes and numbers.
  • a first guide 124 and a second guide 126 for guiding the flow of air to the inlet 128 are provided at an upper portion of the intake unit 120 in the drawing.
  • the first guide 124 is located above the inlet 128, and the second guide 126 is located below the inlet 128. That is, the inlet 128 is located between the first guide 124 and the second guide 126.
  • the first guide 124 and the second guide 126 may be formed at a predetermined angle along the circumference of the mouthpiece 120.
  • the first guide 124 and the second guide 126 may be provided in a pinch shape.
  • the lower end of the first guide 124 and the second guide 126 is coupled to the side surface 120c and the upper end of the first guide 124 and the second guide 126 is provided to have a larger diameter than the side surface 120c. Therefore, as a whole, the upper end is installed in the mouthpiece 120 in the shape of wide.
  • the first guide 124 has a lower end adjacent to the upper surface 120a to form an uppermost end of the mouthpiece 120.
  • An upper end of the mouthpiece 120 may be provided in a dish shape by the first guide 124 and the upper surface 120a.
  • the second guide 126 is provided at a lower end of the inlet 128 to surround the inlet 128. That is, at least a portion of the inlet 128 may not be exposed to the outside by the second guide 126.
  • FIG. 9 is a view showing the flow of air in the mouth of the differential pressure measuring device of the outdoor unit of the air conditioner according to an embodiment of the present invention.
  • FIG. 9 for example, air is flowed from top to bottom in the drawing.
  • the mouthpiece 120 is disposed such that the upper surface 120a is located upstream and the lower surface 120b is located downstream. Accordingly, the inflow hole 128 formed in the side surface 120c and the flow direction of air are vertically disposed.
  • Air flowing toward the mouth 120 may be at least partially flowed along the first guide by the upper surface and the first guide in a direction opposite to the flow direction. Accordingly, the flow of air in the outer circumference of the mouth 120 may be reduced. That is, the first guide 124 may emit a flow having a large kinetic energy.
  • the air may flow through the second guide 126 to the inlet 128.
  • the second guide 126 may serve to reduce flow irregularity to the inlet 128.
  • Relatively reduced air may flow through the inlet port 128 to the interior space of the mouthpiece 120. That is, the first guide 124 and the second guide 126 may be provided to the inlet 128 to reduce the flow unnecessary for the measurement. This can reduce errors in the measurement and improve accuracy.
  • the first guide 124 may be stably installed in a predetermined installation portion.
  • the first guide 124 may be installed in contact with one side of the outdoor heat exchanger 55. Accordingly, the air passing through the outdoor heat exchanger 55 may flow along the first guide 124 and flow into the inlet 128.
  • the second guide 126 may serve to prevent impurities such as dust flowing into the inlet 128.
  • the structure of the mouthpiece described above may be equally applied to the first mouthpiece 120 and the second mouthpiece 140.
  • the first intake unit 120 is installed between the shroud 90 to measure the atmospheric pressure corresponding to the pressure of the air before passing through the outdoor heat exchanger (55).
  • the second intake unit 140 is installed at one side of the outdoor heat exchanger 55 to measure the pressure of air passing through the outdoor heat exchanger 55.
  • the differential pressure sensor 110 connected to the first intake part 120 and the second intake part 140, the first hose 130, and the second hose 150 is inside the control box 56. Is installed in, to measure the differential pressure of the pressure measured in each of the mouth portion 120,140. Information about the differential pressure is transmitted to the controller, and the controller compares the predetermined differential pressure with the actually measured differential pressure.
  • the controller may receive information about the temperature of the outdoor heat exchanger 55 and the temperature of the outdoor air by a temperature sensor or the like. Therefore, the controller may determine whether the outdoor heat exchanger 55 is implanted according to the differential pressure and temperature information.

Landscapes

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

Abstract

L'invention concerne une unité extérieure d'un climatiseur. L'unité extérieure d'un climatiseur comprend : un caisson ; un échangeur de chaleur extérieur installé à l'intérieur du caisson ; et un dispositif de mesure de pression différentielle destiné à mesurer une pression différentielle d'air qui traverse l'échangeur de chaleur extérieur. Le dispositif de mesure de pression différentielle comprend : une première portion de buse installée à l'intérieur du caisson ; une deuxième portion de buse, installée sur un côté de l'échangeur de chaleur extérieur et destinée à mesurer la pression de l'air qui traverse l'échangeur de chaleur extérieur ; et un capteur de pression différentielle destiné à mesurer une différence de pression entre les première et deuxième portions de buse.
PCT/KR2018/002592 2017-03-06 2018-03-05 Unité extérieure de climatiseur Ceased WO2018164434A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2017-0028158 2017-03-06
KR1020170028158A KR20180101781A (ko) 2017-03-06 2017-03-06 공기조화기의 실외기

Publications (1)

Publication Number Publication Date
WO2018164434A1 true WO2018164434A1 (fr) 2018-09-13

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KR (1) KR20180101781A (fr)
WO (1) WO2018164434A1 (fr)

Cited By (3)

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Publication number Priority date Publication date Assignee Title
EP3657082A1 (fr) * 2018-11-23 2020-05-27 Vaillant GmbH Boîtier renforcé de pompe à chaleur
CN112902390A (zh) * 2021-02-23 2021-06-04 珠海格力电器股份有限公司 除霜方法、装置以及空调
JP2022077885A (ja) * 2020-11-12 2022-05-24 株式会社Sumco 差圧測定装置および差圧測定方法

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KR0120536B1 (ko) * 1992-11-11 1997-10-22 윤종용 냉장고의 성에제거방법 및 그 장치
KR20070000051U (ko) * 2006-12-19 2007-01-09 박진선 로스터용 연기 흡입관의 기름받이 가이드 장치
JP2011247525A (ja) * 2010-05-28 2011-12-08 Panasonic Corp 冷凍装置
KR101591911B1 (ko) * 2014-06-11 2016-02-05 (주)에이티앤비 자동 제진 및 제설 장치
KR20160082212A (ko) * 2014-12-31 2016-07-08 엘지전자 주식회사 공기 조화기의 실외기

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Publication number Priority date Publication date Assignee Title
KR0120536B1 (ko) * 1992-11-11 1997-10-22 윤종용 냉장고의 성에제거방법 및 그 장치
KR20070000051U (ko) * 2006-12-19 2007-01-09 박진선 로스터용 연기 흡입관의 기름받이 가이드 장치
JP2011247525A (ja) * 2010-05-28 2011-12-08 Panasonic Corp 冷凍装置
KR101591911B1 (ko) * 2014-06-11 2016-02-05 (주)에이티앤비 자동 제진 및 제설 장치
KR20160082212A (ko) * 2014-12-31 2016-07-08 엘지전자 주식회사 공기 조화기의 실외기

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3657082A1 (fr) * 2018-11-23 2020-05-27 Vaillant GmbH Boîtier renforcé de pompe à chaleur
JP2022077885A (ja) * 2020-11-12 2022-05-24 株式会社Sumco 差圧測定装置および差圧測定方法
TWI805006B (zh) * 2020-11-12 2023-06-11 日商Ｓｕｍｃｏ股份有限公司 壓差測量裝置以及壓差測量方法
JP7396253B2 (ja) 2020-11-12 2023-12-12 株式会社Sumco 差圧測定方法
CN112902390A (zh) * 2021-02-23 2021-06-04 珠海格力电器股份有限公司 除霜方法、装置以及空调

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