WO2020103579A1 - Unité intérieure de climatiseur et climatiseur - Google Patents

Unité intérieure de climatiseur et climatiseur

Info

Publication number
WO2020103579A1
WO2020103579A1 PCT/CN2019/109140 CN2019109140W WO2020103579A1 WO 2020103579 A1 WO2020103579 A1 WO 2020103579A1 CN 2019109140 W CN2019109140 W CN 2019109140W WO 2020103579 A1 WO2020103579 A1 WO 2020103579A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
indoor unit
air conditioner
conditioner indoor
wind wheel
Prior art date
Application number
PCT/CN2019/109140
Other languages
English (en)
Chinese (zh)
Inventor
刘乾坤
王锡栋
凌敬
邹奎芳
覃强
Original Assignee
广东美的制冷设备有限公司
美的集团股份有限公司
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 广东美的制冷设备有限公司, 美的集团股份有限公司 filed Critical 广东美的制冷设备有限公司
Publication of WO2020103579A1 publication Critical patent/WO2020103579A1/fr

Links

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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20—Casings or covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/28—Arrangement or mounting of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30—Arrangement or mounting of heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F24F2013/247—Active noise-suppression

Definitions

  • the present application relates to the technical field of air conditioning, in particular to an air conditioner indoor unit and an air conditioner.
  • the main purpose of the present application is to provide an indoor unit of an air conditioner, which aims to make the air intake resistance during the operation of the air conditioner indoor unit small, the air output more stable, and improve the surge phenomenon.
  • the air conditioner indoor unit proposed by the present application includes a cabinet, the cabinet is provided with an air inlet and an air outlet, and an air duct connecting the air inlet and the air outlet is formed, and the air duct is provided with There is a wind wheel and an evaporator surrounding the outside of the wind wheel;
  • the projection of the wind wheel on the horizontal plane falls in the front-rear direction into the projection range of the air inlet on the horizontal plane;
  • said air inlet in a horizontal plane in the projection length in the longitudinal direction L in, the outer diameter of the rotor is D 2, L in at least not less than 1.5D 2.
  • the distance between the projection of the front side of the wind wheel on the horizontal plane and the projection of the front side of the air inlet on the horizontal plane is greater than 0.5D 2 .
  • the cabinet includes an upper wall of the air duct and a lower wall of the air duct, and an air duct is formed between the upper wall of the air duct and the lower wall of the air duct;
  • the upper wall of the air duct includes an upper wall connecting section and a front volute, the front volute is formed by bending from an end of the upper wall connecting section near the air inlet, and the front volute extends toward the air inlet;
  • the lower wall of the air duct includes a lower wall connecting section and a rear volute, and the rear volute extends from an end of the lower wall connecting section near the air inlet toward the air inlet.
  • the minimum distance between the upper wall of the air duct and the lower wall of the air duct is L out , and L out is at least 0.42D 2 and not more than 0.57D 2 .
  • the upper wall connection section and the lower wall connection section are oppositely arranged, and the upper wall connection section and the lower wall connection section intersect along an extension line extending away from the wind outlet direction to form a diffusion angle ⁇ ,
  • the value range of the diffusion angle ⁇ is: ⁇ is at least greater than 0 ° and not more than 180 °.
  • the value range of the diffusion angle ⁇ is: ⁇ is at least not less than 5 ° and not more than 25 °.
  • the length of the lower wall connecting section is L 3 , and L 3 is at least not less than 0.15D 2 .
  • the distance between the wind wheel and the front volute is ⁇ 1 , and ⁇ 1 is at least not less than 0.035D 2 and not more than 0.065D 2 .
  • the value range of the distance ⁇ 1 between the wind wheel and the front volute is: ⁇ 1 is at least not less than 3.0 mm.
  • the distance between the wind wheel and the rear volute is ⁇ 2
  • ⁇ 2 is at least not less than 0.035D 2 and not more than 0.065D 2 .
  • the value range of the distance ⁇ 2 between the wind wheel and the rear volute is: ⁇ 2 is at least not less than 3.0 mm.
  • a line connecting the center of the wind wheel to the nearest point of the front scroll tongue and a line connecting the center of the wind wheel to the closest point of the rear scroll tongue is the wind outlet arc angle ⁇ , which is at least not less than 160 ° and not more than 185 °.
  • the chassis includes a chassis, a face frame, and a front panel, the front panel is connected to the front side of the face frame, the chassis is connected to the rear side of the face frame, and the lower end of the chassis is formed
  • the lower end of the face frame is formed as the upper wall of the air duct
  • the air inlet is located at the top of the face frame
  • the air outlet is located at the lower portion of the face frame.
  • the evaporator includes a front steaming section between the wind wheel and the front panel, and a distance between the front steaming section and the front panel is L 4 , and L 4 is at least not less than 0.2D 2 .
  • the evaporator further includes a middle steaming section and a rear steaming section, the front steaming section, the middle steaming section and the rear steaming section are connected in sequence, and the middle steaming section and the rear steaming section One end is connected above the wind wheel, the end of the rear steaming section facing away from the middle steaming section extends toward the rear side of the wind wheel, and the end of the middle steaming section facing away from the rear steaming section faces The wind wheel extends in the front direction.
  • the indoor unit of the air conditioner further includes a filter screen, the filter screen is disposed in the air duct and is located between the air inlet and the evaporator.
  • the air conditioner indoor unit further includes an inlet grille, and the casing is installed with the inlet grille at the air inlet.
  • the air conditioner indoor unit further includes electric auxiliary heat, and the electric auxiliary heat is installed in the air duct.
  • This application also proposes an air conditioner, including an outdoor air conditioner and the indoor air conditioner;
  • the air conditioner indoor unit includes a cabinet, the cabinet is provided with an air inlet and an air outlet, and an air duct connecting the air inlet and the air outlet is formed, the air duct is provided with a wind wheel, and the surrounding Evaporator outside the wind wheel;
  • the projection of the wind wheel on the horizontal plane falls in the front-rear direction into the projection range of the air inlet on the horizontal plane;
  • said air inlet in a horizontal plane in the projection length in the longitudinal direction L in, the outer diameter of the rotor is D 2, L in at least not less than 1.5D 2.
  • the projection of the wind wheel on the horizontal plane falls into the projection range of the air inlet on the horizontal plane in the front and rear directions, and the projection of the air inlet on the horizontal plane and the length L in in the front and rear directions are set to be greater than or equal to 1.5
  • the outer diameter of the wind wheel is doubled.
  • the size of the air inlet in the front and rear directions matches the outer diameter of the wind wheel.
  • the outside air can enter the air duct from the air inlet more smoothly.
  • the resistance of the air flow is reduced, the amount of air intake is increased, the working efficiency of the wind wheel is improved, and the heat exchange efficiency of the evaporator is improved, thereby improving the cooling and heating effects of the air conditioner.
  • the amount of air entering the air duct from the air inlet is more uniform, and the stability of the air blown out of the air outlet is improved. Even during long-term use, the air conditioner can still maintain a high operating efficiency, which can improve the surge of the air conditioner during long-term use. phenomenon.
  • FIG. 1 is a schematic cross-sectional view of an embodiment of an air-conditioning indoor unit of the present application
  • Fig. 2 is a partially enlarged view at II in Fig. 1;
  • Figure 3 is a partial enlarged view of the position III in Figure 1;
  • FIG. 4 is a schematic cross-sectional view of the plan A of the air-conditioning indoor unit of the present application.
  • FIG. 5 is a velocity cloud diagram of scheme A in FIG. 4;
  • FIG. 6 is a trace diagram of scheme A in FIG. 4;
  • FIG. 7 is a schematic cross-sectional view of the plan B of the air-conditioning indoor unit of the present application.
  • FIG. 8 is a velocity cloud diagram of scheme B in FIG. 7;
  • Figure 10 is a comparison diagram of the relative velocity distribution of each monitoring point of Scheme A and Scheme B;
  • Fig. 11 is a schematic diagram of the change curve of air volume and noise between the wind wheel and the base of the tongue at ⁇ 1 and the distance between the wind wheel and the rear volute at ⁇ 2 ;
  • Fig. 13 is a graph of the rotation speed of the wind wheel in plan C and plan D corresponding to the air volume in the duct;
  • FIG. 14 is a graph of the rotation speed of the wind turbine in plan C and plan D versus the power of the wind turbine;
  • FIG. 15 is a graph of the rotation speed of the wind wheel in plan C and plan D versus noise.
  • first, second, etc. are for descriptive purposes only, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated.
  • the features defined with “first” and “second” may include at least one of the features either explicitly or implicitly.
  • the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of those skilled in the art to realize. When the combination of technical solutions contradicts or cannot be realized, it should be considered that the combination of such technical solutions does not exist , Nor within the scope of protection required by this application.
  • the present application proposes an air conditioner indoor unit 100, which includes a cabinet 10, which is provided with an air inlet 131 and an air outlet 133, and an air duct connecting the air inlet 131 and the air outlet 133 is formed. Inside, a wind wheel 18 and an evaporator 17 surrounding the outside of the wind wheel 18 are provided.
  • the air-conditioning indoor unit 100 in the technical solution of the present application is mainly a wall-mounted air-conditioning indoor unit 100 or a cabinet-type air-conditioning indoor unit 100.
  • the technical solution of the present application is mainly based on the positional relationship of the wall-mounted air-conditioning indoor unit 100 after the installation is completed It can be understood that when the air-conditioning indoor unit 100 is a cabinet, the relative positional relationship of its structure meets the limitations of the technical solution of the present application, and only the overall orientation of the air-conditioning indoor unit 100 as defined in the present application needs to be adjusted. Within the scope of protection of this application.
  • the wall-mounted air conditioner indoor unit 100 has a use state when the installation is completed. In this use state, the rear side of the cabinet 10 is installed on the installation carrier through the installation plate. At this time, the direction perpendicular to the installation surface can be defined as the front-rear direction , And define that the direction perpendicular to the front-rear direction in the same horizontal plane is the left-right direction, and the direction perpendicular to the horizontal plane is defined as the up-down direction. Normally, the wall-mounted air conditioner indoor unit 100 has the largest dimension in the left-right direction. It can be understood that when the wall-mounted air conditioner indoor unit 100 is in a non-use state, the front-back direction, the up-down direction, and the left-right direction are defined accordingly according to the use state.
  • the projection of the wind wheel 18 on the horizontal plane falls in the front-rear direction into the projection range of the air inlet 131 on the horizontal plane;
  • the air inlet 131 in the horizontal plane in the projection length in the longitudinal direction L in, the outer diameter of the rotor 18 is D 2, L in at least not less than 1.5D 2.
  • the air driven by the wind wheel 18 enters the air passage from the air inlet 131, and is sent out through the air outlet 133 after heat exchange by the evaporator 17, during this process, the positional relationship between the air inlet 131 and the wind wheel 18 and the air inlet
  • the size of the air outlet 131 and the wind wheel 18 directly affects the amount of air intake in the air duct, and the direction and velocity of the air flow after entering the air duct.
  • the projection of the wind wheel 18 on the horizontal plane falls in the front-rear direction into the projection range of the air inlet 131 on the horizontal plane, and the length L in of the projection of the air inlet 131 on the horizontal plane and the front-rear direction is set to be greater than or equal to 1.5 times the outer diameter of the wind wheel 18.
  • the size of the air inlet 131 in the front-rear direction matches the outer diameter of the wind wheel 18.
  • the outside air can flow more smoothly from the air inlet 131 Entering the air duct, the air flow resistance of the air duct is reduced, the air intake is increased, the working efficiency of the wind wheel 18 is improved, and the heat exchange efficiency of the evaporator 17 is improved, thereby improving the cooling and heating effects of the air conditioner.
  • the air volume entering the air duct from the air inlet 131 is more uniform, and the stability of the air blown out of the air outlet 133 is improved. Even during long-term use, the air conditioner can still maintain a high operating efficiency, which can improve the air conditioner during long-term use. Surge phenomenon.
  • the distance between the projection of the front side of the wind wheel 18 on the horizontal plane and the projection of the front side of the air inlet 131 on the horizontal plane is greater than 0.5D 2 .
  • the intersection point of the cross section of the air conditioner indoor unit 100 and the axis of the wind wheel 18 is defined as O, and the first auxiliary straight line is defined.
  • the first auxiliary straight line passes through the point O and extends in the front-rear direction.
  • the first auxiliary straight line and the wind The front side of the wheel 18 intersects at point B, and the rear side of the wind wheel 18 intersects at point A.
  • the first auxiliary straight line extends from point B to the direction away from point A to form point C.
  • the length from point A to point C is greater than or equal to 1.5 D 2 , the projection of points A to C on the horizontal plane falls within the projection range of the air inlet 131 on the horizontal plane.
  • the direction of the air duct is biased to the front side of the wind wheel 18, therefore, the center position of the air inlet 131 is biased to the front side of the wind wheel 18, so that the wind wheel 18 has a better air intake effect.
  • the efficiency of the wind wheel 18 is further improved.
  • the evaporator 17 includes a front steaming section 171, a middle steaming section 173 and a rear steaming section 175 connected in sequence, one ends of the middle steaming section 173 and the rear steaming section 175 are connected above the wind wheel 18, and the rear steaming section 175 faces away
  • One end of the middle steaming section 173 extends toward the rear side of the wind turbine 18, and one end of the middle steaming section 173 facing away from the rear steaming section 175 extends toward the front side of the wind turbine 18.
  • This embodiment mainly improves the size of the wind speed before and after the evaporator 17, improves the distribution of the overall speed during the exchange of air and the evaporator 17, improves the uniformity of the airflow in the air duct, and is beneficial to improving surge and further improving heat exchange efficiency.
  • this application has conducted simulation analysis for two different sizes of the air inlet 131.
  • FIG. 4 shows the air-conditioning indoor unit 100 of solution A
  • FIG. 6 shows the air-conditioning indoor unit 100 of solution B
  • the wind wheel 18 of the air-conditioning indoor unit 100 is a cross-flow wind wheel
  • the outer diameter D of the wind wheel 18 2 are 98mm
  • 16U tube evaporator 17 to evaporator 17 -D7 window sheet FIG. 4 and FIG. 5 for convenience of experimental data were analyzed
  • the evaporator 17 is arranged in the monitoring points 17 from back to front , 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, and 17, respectively.
  • Figures 5 and 6 respectively give the velocity cloud and trace of the simulation results of Scheme A
  • Figures 7 and 8 respectively give the velocity cloud and trace of the simulation results of Scheme B
  • the unit of wind speed in the velocity cloud is m / s. The darker the gray, the greater the velocity of air in the air duct.
  • the curves with arrows represent the trajectory of air flowing from the air inlet 131 to the air outlet 133.
  • the corner vortex 191 disappears at the air inlet 131.
  • the average speed of the windward surface upstream of the evaporator 17 increases, and the coverage area of the low-speed area decreases; meanwhile, the cross-flow wind wheel 18 is eccentric
  • the vortex 192 is away from the center of the wind wheel 18 and the size is reduced.
  • the solution A that is, the improved solution of the present application, can significantly improve the size and direction of the air flow in the air duct and the uniformity of the air flow in the air duct, and improve the wind output efficiency of the wind wheel 18.
  • the relative velocity distributions of the 17 monitoring points upstream of the evaporator 17 in Scheme A and Scheme B are given.
  • the wind speed at each monitoring point is V
  • the wind speed V max at the maximum wind speed point among all monitoring points is taken as a reference.
  • the relative speed of each monitoring point is defined as V / V max . It can be seen from the figure that in Scheme B, the relative speeds of the monitoring points 1 and 2 near the monitoring points 14, 15, 16, 17 near the front steaming section 171 and the lower half of the rear steaming section 175 decrease, and the middle steaming section 173 and the post-steaming section
  • the relative speeds of the monitoring points 3 ⁇ 13 near the upper part of 175 increase.
  • the uniformity of wind speed in Option B deteriorates, the overall heat exchange efficiency of the evaporator 17 decreases, and the stability of the air outlet also deteriorates.
  • the air duct system Increased risk of surge. It can be seen that in the improved scheme A, the wind speed in the air duct is uniform, the overall heat exchange efficiency of the evaporator 17 is improved, the air output is more stable, and the risk of surge in the air duct system is reduced.
  • the cabinet 10 includes an air duct upper wall 135 and an air duct lower wall 111, and an air duct is formed between the air duct upper wall 135 and the air duct lower wall 111;
  • the upper wall 135 of the air duct includes an upper wall connecting section 1351 and a front volute tongue 1353.
  • the front volute tongue 1353 is bent from an end of the upper wall connecting section 1351 close to the air inlet 131, and the front volute tongue 1353 faces the air inlet 131 extend;
  • the lower wall 111 of the air duct includes a lower wall connecting section 1111 and a rear volute tongue 1113.
  • the rear volute tongue 1113 extends from an end of the lower wall connecting section 1111 near the air inlet 131 toward the air inlet 131.
  • the air entering the air duct from the air inlet 131 is guided by the upper wall 135 of the air duct and the lower wall 111 of the air duct, and then passes through the area surrounded by the front volute tongue 1353 and the rear volute tongue 1113, and then passes through the upper wall connecting section 1351
  • the area connected to the lower wall 1111 is delivered to the air outlet 133.
  • the minimum distance between the upper wall 135 of the air duct and the lower wall 111 of the air duct is L out , and L out is at least 0.42D 2 and not more than 0.57D 2 .
  • the minimum distance between the upper wall 135 of the air duct and the lower wall 111 of the air duct determines the air volume of the air-conditioning indoor unit 100 and the static pressure at the air outlet 133.
  • the minimum distance between the air ducts is L out , L out is at least 0.42D 2 and does not More than 0.57D 2 .
  • the minimum distance between the upper wall 135 of the air channel and the lower wall 111 of the air channel is also the minimum distance between the air outlet channels. If the minimum distance L out is less than 0.42D 2 , the wind range will be reduced and the efficiency of the air outlet will be reduced. If the minimum distance L out is greater than 0.57D 2 , the intensity of the outflow will be reduced and the air supply distance will be shorter.
  • the minimum interval L out of the air outlet duct is limited to the range of 0.42D 2 to 0.57D 2 , which can ensure that the wind energy sent from the air outlet 133 maintains a certain air supply distance, and ensures the comfort of cooling and heating the room.
  • the upper wall connection section 1351 and the lower wall connection section 1111 are oppositely arranged, and the upper wall connection section 1351 and the lower wall connection section 1111 intersect along an extension line extending away from the wind direction to form a diffusion angle ⁇ , a diffusion angle
  • ⁇ a diffusion angle
  • the value range of ⁇ is: ⁇ is at least greater than 0 ° and not more than 180 °.
  • the distance between the upper wall connecting section 1351 and the lower wall connecting section 111 increases gradually along the direction of the wind, forming a trumpet shape, which can disperse the air in the air duct, not only making the air sent by the air outlet 133 even Good sex, and make the air supply distance longer.
  • the value range of the diffusion angle ⁇ is: ⁇ is at least not less than 5 ° and not more than 25 °. If the diffusion angle ⁇ is less than 5 °, the range of air sent through the air outlet 133 is small; if the diffusion angle ⁇ is greater than 25 °, the range of air sent through the air outlet 133 is too large, which will cause uneven temperature of the air and send The wind distance decreases.
  • the diffusion angle ⁇ takes a value in the range of 5 ° to 25 °, which can ensure a large air outlet 133, and obtain relatively small noise and satisfactory comfort.
  • the length of the lower wall connecting section 1111 is L 3 , and L 3 is at least not less than 0.15D 2 .
  • L 3 is at least not less than 0.15D 2 .
  • L 3 is at least not less than 0.15D 2 .
  • L 3 greater than 0.15D 2 can ensure a certain static pressure of the air duct.
  • the minimum distance L out of the upper wall 135 of the air duct and the lower wall 111 of the air duct is in the range of 0.42D 2 to 0.57D 2
  • the connecting section L 3 of the lower wall of the air outlet 133 is required to be at least not less than 0.15D 2 to ensure the basic performance of the air duct
  • the diffusion angle ⁇ needs to be matched with the length of L 3 Adjustment, when L 3 and ⁇ meet the above value range, when L 3 is smaller, the closer ⁇ is to the upper limit of the value range, it can ensure that there is a larger air outlet 133, the air outlet range is larger, and the air outlet is softer; When L 3 is larger, the closer ⁇ is to the lower limit of the value range, it can prevent the air outlet 133 from flowing back and reduce the stability of the air outlet, while reducing the risk of surge and condensation.
  • the distance between the wind wheel 18 and the front scroll 1353 is ⁇ 1
  • the distance between the wind wheel 18 and the rear scroll 1113 is ⁇ 2 ;
  • ⁇ 1 is at least not less than 0.035D 2 and not more than 0.065D 2 ; and / or, ⁇ 2 is at least not less than 0.035D 2 and not more than 0.065D 2 .
  • Figure 11 shows the relationship between ⁇ 1 and ⁇ 2 and air volume and noise, where the abscissa is ⁇ 1 or ⁇ 2 , and the ⁇ 1 or ⁇ 2 is divided into three intervals, which are A interval, B interval and C interval, respectively , The ordinate is the air volume or noise.
  • ⁇ 1 and ⁇ 2 satisfy: ⁇ 1 is at least not less than 0.035D 2 and not more than 0.065D 2 , and ⁇ 2 is at least Not less than 0.035D 2 and not more than 0.065D 2 .
  • the value range of the distance ⁇ 1 between the wind wheel 18 and the front volute 1353 satisfies: ⁇ 1 is at least not less than 3.0 mm; and / or the wind wheel 18 and The value range of the distance ⁇ 2 of the rear volute 1113 satisfies: ⁇ 2 is at least not less than 3.0 mm. So that the ⁇ 1 and ⁇ 2 are not too small to affect the installation.
  • the cross section of the air conditioner indoor unit 100 is formed by the connection between the center of the wind wheel 18 to the nearest point of the front volute 1353 and the line from the center of the wind wheel 18 to the closest point of the rear volute 1113
  • the angle is the wind exit arc angle ⁇ , ⁇ is at least not less than 160 ° and not more than 185 °.
  • a second auxiliary straight line is defined.
  • the second auxiliary straight line passes through point O and extends perpendicular to the direction of the posterior volute tongue 1113, and intersects with the posterior volute tongue 1113 at point N;
  • the present application provides Scheme C and Scheme D to test the degree to which the distances ⁇ 1 and ⁇ 2 affect the efficiency and noise of the wind wheel 18.
  • FIG. 12 shows the air volume, power and noise values corresponding to the rotation speeds of the wind wheel 18 at 900 rpm, 1000 rpm, 1100 rpm and 1200 rpm in scenario C and scenario D. According to the data results of the graph in FIG. 12, graphs are given respectively The schematic diagram of the air volume curve shown in 13, the schematic diagram of the power curve shown in FIG. 14, and the schematic diagram of the noise curve shown in FIG. 15 can more intuitively reflect the relationship between the air volume, power, and noise values in Scheme A and Scheme B.
  • Plan D has a loss of 6.5% -7.5% at the same speed compared to Plan C, and the power is slightly higher at the same air volume, about 2% -3%, and the noise is 0.6-1.0dBA at the same air volume.
  • the air supply efficiency of the fan is reduced, and the noise is also deteriorated.
  • ⁇ 1 and ⁇ 2 fall within the preferred interval, and in Scheme D, ⁇ 1 and ⁇ 2 are too large and do not fall within the preferred interval.
  • the air conditioner indoor unit 100 satisfies ⁇ 1 at least not less than 0.035D 2 and not more than 0.065D 2 , and ⁇ 2 is at least not less than 0.035D 2 and not more than 0.065D 2 , the air volume of the wind wheel 18 at the same speed increases, the air efficiency increases, and the noise decreases.
  • the chassis 10 includes a chassis 11, a face frame 13, and a front panel 15.
  • the front panel 15 is connected to the front side of the face frame 13
  • the chassis 11 is connected to the rear side of the face frame 13
  • the lower end of the chassis 11 is formed as In the air duct lower wall 111
  • the lower end of the face frame 13 is formed as an air duct upper wall 135
  • the air inlet 131 is located at the top of the face frame 13
  • the air outlet 133 is located at the lower portion of the face frame 13.
  • the air duct of the air-conditioning indoor unit 100 is also provided with a filter and other structures.
  • the air enters the air duct through the air inlet 131, is filtered by the filter, and then exchanges heat with the evaporator 17, and the casing 10 is also provided at the air inlet 131.
  • the inlet grille is installed, which can prevent large objects from entering the air duct by mistake, so as to provide preliminary protection for the structure in the air duct, and the filter screen can further protect the structure in the air duct, and can The air is filtered to make the air sent out at the air outlet 133 more clean and of better quality.
  • Electric auxiliary heat can also be added in the air duct.
  • the electric auxiliary heat can further improve the heating efficiency of the air conditioner.
  • the evaporator 17 includes a front steaming section 171 located between the wind wheel 18 and the front panel 15.
  • the distance between the front steaming section 171 and the front panel 15 is L 4 , and L 4 is at least not less than 0.2D 2 .
  • the distance between the front steaming section 171 and the front panel 15 is limited to be greater than or equal to 0.2D 2 , so that sufficient space is left in front of the front steaming section 171, so that the air flow rate at the front steaming section 171 is increased, and the evaporation is further improved.
  • the overall velocity distribution of the device 17 is uniform, improving surge and heat exchange efficiency. If the distance L 4 between the front steaming section 171 and the front panel 15 is less than 0.2D 2 , the gap between the front steaming section 171 and the front panel 15 is too small, resulting in a poor heat exchange effect at the front steaming section 171 .
  • the present application also proposes an air conditioner including an air conditioner outdoor unit and an air conditioner indoor unit 100.
  • the structure of the air conditioner indoor unit 100 refers to the above embodiments. Since the air conditioner adopts all the technical solutions of all the above embodiments, At least all the effects brought by the technical solutions of the above embodiments will not be repeated here.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Flow Control Members (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

La présente invention concerne une unité intérieure de climatiseur et un climatiseur. L'unité intérieure de climatiseur (100) comprend un boîtier (10). Le boîtier (10) est pourvu d'un orifice d'entrée d'air (131) et d'un orifice de sortie d'air (133), et un canal d'air reliant l'orifice d'entrée d'air (131) à l'orifice de sortie d'air (133) est formé entre eux. Dans le canal d'air sont disposés un ventilateur (18) et un évaporateur (17) disposé autour de l'extérieur du ventilateur (18). Une saillie du ventilateur (18) dans un plan horizontal tombe dans une plage de projection de l'orifice d'entrée d'air (131) dans le plan horizontal dans une direction avant-arrière, et la longueur de la saillie de l'orifice d'entrée d'air (131) dans le plan horizontal dans la direction avant-arrière correspond à Lin, le diamètre externe du ventilateur (18) correspond à D 2, L in étant au moins pas inférieur à 1,5D2. En fonctionnement, l'unité intérieure de climatiseur a une faible résistance à l'air d'admission, permettant une sortie d'air stable et améliorant la condition de surtension soudaine.
PCT/CN2019/109140 2018-11-19 2019-09-29 Unité intérieure de climatiseur et climatiseur WO2020103579A1 (fr)

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CN201811380197.0A CN109340915B (zh) 2018-11-19 2018-11-19 空调室内机和空调器

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CN109340915B (zh) * 2018-11-19 2020-09-11 广东美的制冷设备有限公司 空调室内机和空调器
CN112303711B (zh) * 2019-07-30 2022-02-25 广东美的制冷设备有限公司 壁挂式空调室内机
CN110736141A (zh) * 2019-11-04 2020-01-31 广东美的暖通设备有限公司 室内机和空调器

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JP2010216673A (ja) * 2009-03-13 2010-09-30 Daikin Ind Ltd 空気調和機
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