WO2021227434A1 - Unité extérieure et climatiseur - Google Patents

Unité extérieure et climatiseur Download PDF

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Publication number
WO2021227434A1
WO2021227434A1 PCT/CN2020/130673 CN2020130673W WO2021227434A1 WO 2021227434 A1 WO2021227434 A1 WO 2021227434A1 CN 2020130673 W CN2020130673 W CN 2020130673W WO 2021227434 A1 WO2021227434 A1 WO 2021227434A1
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WO
WIPO (PCT)
Prior art keywords
air inlet
chamber
outdoor unit
heat dissipation
auxiliary air
Prior art date
Application number
PCT/CN2020/130673
Other languages
English (en)
Chinese (zh)
Inventor
陈妍杉
闫文明
刘慧盈
刘伟彤
马超
万晓佩
Original Assignee
青岛海尔空调器有限总公司
海尔智家股份有限公司
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Application filed by 青岛海尔空调器有限总公司, 海尔智家股份有限公司 filed Critical 青岛海尔空调器有限总公司
Publication of WO2021227434A1 publication Critical patent/WO2021227434A1/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
    • F24F1/56—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
    • 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
    • F24F1/24—Cooling of electric components
    • 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
    • F24F1/48—Component arrangements in separate outdoor units characterised by air airflow, e.g. inlet or outlet airflow

Definitions

  • This application relates to the field of air conditioning heat dissipation technology, for example, to an outdoor unit and an air conditioner.
  • heat dissipation modules such as heat sinks are usually used to reduce the temperature of the electrical components on the electronic control assembly.
  • a heat dissipation module is installed on one side of the electronic control assembly to take advantage of the negative pressure generated by the rotation of the fan. The wind takes away the heat from the cooling module and the electronic control components.
  • the electric control component of the existing outdoor unit is generally set in the compressor chamber isolated from the fan chamber where the fan is located. Since the compressor chamber is relatively closed, the airflow in the compressor chamber must be blown out after passing through the electric control component. It takes a lot of fan negative pressure to reach the fan chamber. Therefore, under the actual working conditions of the outdoor unit, not only will there be problems such as slow air flow rate and low heat dissipation effect due to the low negative pressure on the side of the electronic control component, but also Due to the partial negative pressure of the fan, the flow rate of the airflow passing through the outdoor heat exchanger will be slowed down, and the heat exchange effect on the outdoor heat exchanger will also be reduced, which affects the refrigeration performance of the air conditioner.
  • the embodiments of the present disclosure provide an outdoor unit and an air conditioner, so as to solve the technical problem that the heat dissipation form of the electronic control component in the related art has a low heat dissipation effect and affects the refrigeration performance of the air conditioner.
  • the outdoor unit includes:
  • the outer casing the inside of which is separated by partitions to define a first chamber for accommodating the fan and a second chamber for accommodating the compressor; wherein at least one side wall corresponding to the second chamber is provided with Auxiliary air inlet, the partition is provided with a heat dissipation air outlet corresponding to the air inlet side of the fan and communicating with the first chamber and the second chamber;
  • the wind driving device is arranged at the auxiliary air inlet, and is used to drive the external airflow into the second chamber through the auxiliary air inlet;
  • the electronic control component is located in the second chamber and is arranged corresponding to the heat dissipation air outlet, so that the air flow in the second chamber can flow out to the first chamber through the electronic control component and the heat dissipation air outlet in sequence.
  • the wind-driven device includes:
  • the rotating filter screen is located outside the auxiliary air inlet and is drivingly connected with the driving motor to filter the external air flow during the driving rotation by the driving motor.
  • the rotating filter screen includes:
  • the shaft seat is located at the center of the rotating filter screen, which is used to connect with the output shaft of the drive motor;
  • a plurality of grille bars are arranged on the outer periphery of the shaft seat at radial intervals; at least part of the grille bars are arranged obliquely to form wind from the outside to the inside when the rotating filter screen rotates;
  • the outer ring frame is arranged coaxially with the shaft seat, and the outer ends of a plurality of grille bars are connected to the outer ring frame.
  • the rotating filter screen is arranged next to the outer side of the auxiliary air inlet, and the axial projection range can at least cover the auxiliary air inlet.
  • the auxiliary air inlet includes:
  • Motor base used to fix the drive motor
  • a plurality of air intake mesh holes are arranged radially at intervals on the outer peripheral side of the motor base.
  • a wiring port is further provided on the corresponding side wall of the second chamber, and the auxiliary air inlet is provided adjacent to the wiring port;
  • the outdoor unit also includes a wiring cover provided on the outer side of the side wall, and the wiring cover at least covers a wiring port and an auxiliary air inlet; wherein the wiring cover is provided with a cover air inlet at a position corresponding to the auxiliary air inlet.
  • a dust outlet is provided at the bottom position of the wiring cover corresponding to the auxiliary air inlet.
  • the electronic control component includes:
  • the electronic control box body has a first accommodating portion located in the second chamber for accommodating one or more electronic control modules, and a first accommodating portion extending to the first chamber through the heat dissipation air outlet and accommodating the heat dissipation module Two accommodating parts, the heat dissipation module is in thermally conductive contact with one or more electronic control modules;
  • the first accommodating part is a semi-closed structure, so that the airflow in the second chamber can flow into the first accommodating part; a plurality of ventilation mesh holes are arranged between the first accommodating part and the second accommodating part.
  • the outdoor unit further includes an independent heat dissipation air duct, the air inlet end of the heat dissipation air duct is arranged at the auxiliary air inlet, and the air outlet is arranged at the first accommodating part.
  • the air conditioner includes the outdoor unit as shown in any of the foregoing embodiments.
  • the outdoor unit provided by the embodiments of the present disclosure is provided with auxiliary air inlets and a wind driving device on the side wall of the chamber where the electronic control component is located, and the wind driving device is used to drive the external air flow through the electronic control component, thereby not only increasing the flow through the electronic control component.
  • the air flow and flow rate of the components improve the heat dissipation effect of the electronic control components, and can also reduce the air pressure shunt to the outdoor unit fan, thereby reducing the adverse effect on the heat exchange efficiency of the outdoor heat exchanger and ensuring the cooling performance of the air conditioner.
  • FIG. 1 is a schematic structural diagram of an outdoor unit provided by an embodiment of the present disclosure
  • Figure 2 is a partial exploded view of Figure 1;
  • Figure 2a is a partial enlarged view of part A in Figure 2;
  • Fig. 3 is a schematic structural diagram of a rotary filter provided by an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of a side plate of an outdoor unit provided by an embodiment of the present disclosure
  • Figure 5a is a first perspective view of a wiring cover provided by an embodiment of the present disclosure.
  • Figure 5b is a second perspective view of the wiring cover provided by an embodiment of the present disclosure.
  • Figure 5c is a front view of a wiring cover provided by an embodiment of the present disclosure.
  • Figure 5d is a B-B sectional view of Figure 5c
  • Fig. 6 is a schematic structural diagram of an electric control box provided by an embodiment of the present disclosure.
  • the directions or positional relationships indicated by the terms “upper”, “lower”, “inner”, “in”, “outer”, “front”, “rear”, etc. are based on the directions shown in the drawings or Positional relationship. These terms are mainly used to better describe the embodiments of the present disclosure and the embodiments thereof, and are not used to limit that the indicated device, element, or component must have a specific orientation, or be constructed and operated in a specific orientation. In addition, some of the above terms may be used to indicate other meanings in addition to the orientation or position relationship. For example, the term “shang” may also be used to indicate a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific situations.
  • connection can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or two devices, components, or The internal communication between the components.
  • connection can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or two devices, components, or The internal communication between the components.
  • A/B means: A or B.
  • a and/or B means: A or B, or, A and B.
  • Fig. 1 is a schematic structural diagram of an outdoor unit provided by an embodiment of the present disclosure
  • Fig. 2 is a partial exploded view of Fig. 1.
  • the embodiment of the present disclosure provides an outdoor unit, the outdoor unit includes an outer casing 11 and a number of functional modules; wherein the outer casing 11 is made of hard materials, such as aluminum Alloy, stainless steel, etc., internally defines a chamber that can be used to house the above-mentioned several functional modules.
  • the chamber can play a role in protecting the functional modules to reduce the adverse effects of the outdoor environment on the normal operation of the functional modules;
  • the functional modules mainly include replacement Heater 121, fan 122, compressor 123, liquid storage tank 124 and electronic control component 4, etc.; among them, heat exchanger 121 is used for heat exchange between the refrigerant and the outdoor environment, specifically including the refrigerant to the outdoor environment in the cooling or dehumidification mode Release heat, and in the heating mode, the refrigerant absorbs heat from the outdoor environment;
  • the fan 122 is used to drive the airflow of the outdoor environment to flow through the heat exchanger 121, so that the refrigerant continuously exchanges heat with the outdoor airflow newly delivered by the fan 122;
  • the machine 123 is used to compress the refrigerant so that the refrigerant can reach the set high temperature and high pressure state;
  • the liquid storage tank 124 is used to store the refrigerant and divert the refrigerant in the gas-liquid state;
  • the outer casing 11 is an approximately rectangular shell structure composed of six panels: a front panel, a back panel, a top plate, a bottom plate, and two side panels 111; the cavity of the outer casing 11 can pass through the partition
  • the plate 112 is formed separately, the number of chambers is two or more, and the chambers are independent of each other, and each chamber can be used for accommodating one or more functional modules.
  • each chamber can provide a relatively independent working space for one or more functional modules contained therein, so as to reduce interference effects between functional modules placed in different chambers, and ensure the normal and stable operation of each functional module.
  • the outer casing 11 is separated by a vertical partition 112 to define a first chamber and a second chamber.
  • the longitudinal ends of the partition 112 are They are respectively fixedly connected to the top and bottom plates of the outer casing 11, and the lateral sides are respectively fixedly connected to the front and back plates of the outer casing 11, so that the first chamber and the second chamber are isolated from each other. There is little or no air flow between the chambers.
  • the first chamber is located on the left side of the outer casing 11, and the second chamber is located on the right side of the outer casing 11.
  • the respective space volumes of the two chambers are determined according to the size of the functional modules contained therein.
  • the first chamber is mainly used as a chamber for accommodating the fan 122 and the heat exchanger 121
  • the second chamber is mainly used as a chamber for accommodating the compressor 123, the liquid storage tank 124, and the electronic control component 4. Therefore, the space volume of the first chamber is larger than the space volume of the second chamber.
  • the panel surrounding and forming the second chamber includes a front panel, a back panel, right parts of the top and bottom panels, a side panel 111 on the right side, and a partition 112.
  • an auxiliary air inlet 2 is provided on the corresponding side wall of the second chamber.
  • the auxiliary air inlet 2 can communicate with the outdoor environment and the second chamber, so that air can flow between the outdoor environment and the second chamber.
  • Circulation; the technical solution of this application mainly restricts the unidirectional flow of airflow from the outdoor environment into the second chamber through the auxiliary air inlet 2.
  • the newly opened auxiliary air inlet 2 The second chamber becomes a semi-closed chamber and can effectively increase the air inlet and air pressure in the second chamber, so that the negative pressure loss of the fan 122 in the first chamber can be greatly reduced when the electric control assembly 4 is dissipated.
  • the number of auxiliary air inlets 2 can be 1, or 2, 3, etc.
  • the specific number of auxiliary air inlets 2 can be determined according to the actual required air volume for heat dissipation. When the required air volume is large, the number of auxiliary air inlets 2 can be set to three, and when the actual required air volume for heat dissipation is small, the number of auxiliary air inlets 2 can be set to one.
  • the auxiliary air inlet 2 may be set on one of the front panel, back panel, top panel, bottom panel, and side panel 111, as shown in Figure 1
  • the auxiliary air inlet 2 is provided on the side plate 111.
  • the auxiliary air inlet 2 since the auxiliary air inlet 2 is facing upwards, rain and snow in bad weather can easily enter the second chamber through the auxiliary air inlet 2, and long-term use will cause the functional modules in the second chamber The aging speeds up and the service life is reduced. Therefore, it is generally necessary to install additional rain and snow shielding structures, such as rain shields and other components.
  • the auxiliary air inlet 2 may be arranged at one or more of the front panel, the back panel, the top panel, the bottom panel, and the side panel 111.
  • one auxiliary air inlet 2 is provided on the multiple panels of the outdoor unit, for example, one auxiliary air inlet 2 is provided on each of the front panel and the side panel 111; in another optional embodiment, the outdoor There are multiple auxiliary air inlets 2 on the same panel of the machine, such as two or three auxiliary air inlets 2 on the same side plate 111.
  • the arrangement form of the multiple auxiliary air inlets 2 can be flexibly adjusted according to specific heat dissipation requirements, and the present application is not limited to this.
  • the structural form of the auxiliary air inlet 2 may be a symmetrical regular shape such as a circle, an ellipse, and a square, or may also be other asymmetrical irregular shapes, and the application is not limited thereto.
  • the structure of the auxiliary air inlet 2 is selected to be circular.
  • the partition 112 is provided with a heat dissipation air outlet, and the heat dissipation air outlet can communicate with the second chamber and the second chamber, so that air can circulate between the first chamber and the second chamber; the present application
  • the technical solution is mainly to restrict the one-way flow of air flow from the second chamber into the first chamber through the heat dissipation air outlet.
  • the side plate 111 is arranged relative to the partition 112, the air flow entering through the auxiliary air inlet 2 on the side plate 111 It flows through most of the electronic control assembly 4 and then flows to the heat dissipation air outlet.
  • the air flow can exchange heat with most of the components of the electronic control assembly 4 during the flow process, which can effectively ensure the overall performance of the electronic control assembly 4. heat radiation.
  • the outer unit casing 11 of the outdoor unit is provided with an outdoor unit air inlet at a position corresponding to the back panel of the first chamber, an outdoor unit air outlet is provided at the front panel position, and the fan 122 is located between the outdoor unit air inlet and the outdoor unit air outlet.
  • the airflow generated by its operation flows from the air inlet of the outdoor machine to the air outlet of the outer machine. Therefore, the side close to the backplane (or the air inlet of the outdoor machine) is the air inlet side of the fan 122, and is close to the front panel (or the air outlet of the outdoor machine).
  • One side of the tuyere is the air outlet side of the fan 122.
  • the heat dissipation air outlet is provided corresponding to the air inlet side of the fan 122.
  • the heat dissipation air outlet is set corresponding to the air inlet side of the fan 122.
  • the air inlet side of the fan 122 is in a negative pressure state, and the second chamber is connected to the outdoor environment through the auxiliary air inlet 2. The state is the same, so that the air pressure at the side of the heat dissipation air outlet corresponding to the first chamber is lower than the side of the corresponding second chamber, so that the air in the second chamber can flow to the first chamber under negative pressure.
  • the heat dissipation air outlet is located on the top of the partition 112 and close to the side of the back plate.
  • the electronic control assembly 4 is arranged corresponding to the heat dissipation air outlet, so that the airflow in the second chamber can flow out to the first chamber through the electronic control assembly 4 and the heat dissipation air outlet in sequence.
  • the outdoor unit of the present application in order to reduce the negative pressure of the fan 122 that is divided when the driving airflow flows from the second chamber to the first chamber, is further provided with a wind driving device at the outlet of the auxiliary air inlet 2. It is used to drive the external airflow into the second chamber through the auxiliary air inlet 2.
  • the wind driven device When the wind driven device is running, it can continuously send the air from the outdoor environment into the second chamber, and the amount of air in the second chamber increases The air pressure increases, so that the air pressure difference between the second chamber and the first chamber becomes larger, so that the air flow and the air flow velocity flowing through the electronic control assembly 4 can be increased, thereby enhancing the heat dissipation efficiency.
  • the negative pressure on the air inlet side is small, and the heat dissipation airflow generated by the shunted negative pressure pressure alone is less and the flow rate is slow. At this time, it is driven by the running wind.
  • the device can increase the positive pressure of the second chamber to speed up the heat dissipation air flow and flow rate, so as to ensure the heat dissipation effect of the electronic control assembly 4.
  • the wind driving device includes a driving motor 31 and a plurality of fan blades, the plurality of fan blades are drivingly connected to the driving motor 31, and the driving motor 31 is electrically connected to the power supply circuit of the outdoor unit; After the driving motor 31 is powered on, the driving motor 31 drives a plurality of fan blades to rotate, so as to generate wind power that drives the air flow from the outdoor side to the second chamber.
  • the axial projection range of the fan blade can cover at least the auxiliary air inlet 2, and the cross-sectional area of the wind field generated by the rotation of the fan blade can cover the maximum air intake area of the auxiliary air inlet 2, which can effectively ensure the auxiliary air inlet 2.
  • the air volume of the inlet air further enhances the heat dissipation effect of the electronic control assembly 4.
  • the number of fan blades may be three leaves, or five leaves, etc., which is not limited in this application.
  • the wind driving device includes a driving motor 31 and a rotating filter screen 32.
  • the rotating filter screen 32 is drivingly connected to the driving motor 31, and the driving motor 31 is electrically connected to the power supply circuit of the outdoor unit. After the driving motor 31 is powered on, the driving motor 31 drives the rotating filter screen 32 to rotate, which can also generate wind driving air flow from the outdoor side to the second chamber.
  • this embodiment replaces the fan blades with a rotating filter 32.
  • the rotating filter 32 can not only generate wind power during operation, but also can use its own filter characteristics to achieve a filtering effect on the outside. The dust, branches and leaves mixed in the airflow are filtered out, so that the filtered airflow is in a relatively clean state, which effectively guarantees the cleanliness of the interior of the second chamber during the long-term use of the outdoor unit.
  • the rotating filter 32 is located outside the auxiliary air inlet 2 so that impurities can be filtered out before entering the auxiliary air inlet 2.
  • the rotating filter screen 32 is arranged next to the outside of the auxiliary air inlet 2 to reduce the axial gap distance between the rotating filter screen 32 and the auxiliary air inlet 2 without interfering with the normal rotation of the rotating filter screen 32, so as to reduce the distance between the rotating screen 32 and the auxiliary air inlet 2
  • the flow of the airflow flowing in from the outer circumference of the rotating filter screen 32 makes most of the airflow filtered by the rotating filter screen 32 and then enters the auxiliary air inlet 2 to further ensure the filtering effect of the external air.
  • Fig. 3 is a schematic structural diagram of a rotary filter provided by an embodiment of the present disclosure.
  • the rotating filter screen 32 includes a shaft seat 321, a plurality of grille bars 322 and an outer ring frame 323.
  • the shaft seat 321 is located at the center of the rotating filter screen 32, and is used to connect with the output shaft of the drive motor 31.
  • the output shaft When the output shaft rotates, it can drive the shaft seat 321 and the rotating filter screen 32 to which it belongs to rotate: more The two grille bars 322 are arranged radially at intervals on the outer circumference of the shaft seat 321, which can be used to filter the air flow passing through it; the outer ring frame 323 and the shaft seat 321 are arranged coaxially, and the outer ring frame 323 mainly serves for shaping and supporting The outer ends of the plurality of grille bars 322 are connected to the outer ring frame 323.
  • the shaft seat 321 is a flat cylindrical boss structure with a shaft hole formed along its own axial direction, and the output shaft of the drive motor 31 extends into the shaft hole to realize the mating and fixing with the shaft seat 321;
  • a thin ring plate is formed on the outer periphery of the shaft seat 321, and the inner ends of the plurality of grid bars 322 are fixedly connected to the ring plate.
  • At least a part of the grille bars 322 of the plurality of grille bars 322 are arranged obliquely to form the wind from the outside to the inside when the rotating filter screen 32 rotates; in order to enable the rotating filter screen 32 to be able to rotate during the rotation process.
  • the grid strips 322 arranged obliquely are evenly distributed on the rotating filter screen 32 and arranged at equal intervals.
  • the rotating filter screen 32 is also provided with a reinforcing structure.
  • the reinforcing structure includes a reinforcing rib 324, and the number of the reinforcing ribs 324 is multiple.
  • each reinforcing rib 324 extends in the radial direction of the rotating filter screen 32, and both ends are respectively fixed to the shaft seat 321 and the outer ring frame 323;
  • the reinforcing ribs 324 can increase the connection strength between the outer ring frame 323 and the shaft seat 321, and reduce the pulling force exerted on the plurality of grille bars 322 by the outer ring frame 323 due to the tendency of the outer ring frame 323 to expand and move to the outer periphery under the action of centrifugal force during the rotation. There is a risk that the grille bar 322 will be pulled off.
  • the reinforcing structure further includes a reinforcing ring rib 325, which is arranged coaxially with the shaft seat 321 and located in the middle position between the shaft seat 321 and the outer ring frame 323.
  • the reinforcing ring ribs 325 are connected, and the reinforcing ring ribs 325 can provide effective support for the middle part of the grille bar 322.
  • the number of reinforcing ring ribs 325 is one or more.
  • different reinforcement ring ribs 325 can be respectively provided on different circumferential lines of the shaft seat 321 and the outer ring frame 323 to support and reinforce the grille bars 322 in different radial lengths. .
  • the various components of the rotating filter screen 32 are integrally formed.
  • the axial projection range of the rotating filter 32 can at least cover the auxiliary air inlet 2, which can not only achieve the similar air supply and heat dissipation effect in the previous embodiment, that is, the rotating filter 32 can be rotated to produce
  • the cross-sectional area of the wind field can cover the maximum air intake area of the auxiliary air inlet 2 to ensure the air intake volume of the auxiliary air inlet 2; it can also make the rotating filter 32 can cover most of the area of the auxiliary air inlet 2, so that most of the airflow Both can be filtered by the rotating filter screen 32 and then enter the auxiliary air inlet 2 to ensure the filtering effect of the external air.
  • the auxiliary air inlet 2 is also provided with a motor seat 21, which can be used to fix the drive motor 31; as shown in Figures 2a and 4, the motor seat 21 is one
  • the shape and size of the circular opening are adapted to the drive motor 31.
  • At least part of the body of the drive motor 31 can be clamped on the motor base 21, and the auxiliary air inlet 2 is provided on the outer periphery of the motor base 21.
  • the auxiliary air inlet 2 is ventilated through a plurality of air inlet mesh holes, and the plurality of air inlet mesh holes 22 are arranged at radial intervals.
  • the air intake mesh 22 On the outer peripheral side of the motor seat 21, the air intake mesh 22 has a small aperture and is arranged densely, so that the mesh structure can be used to filter the air flow without affecting the air intake, so that larger impurities cannot be used. Enter the second chamber.
  • the intake mesh 22 at the outermost periphery is in the axial projection range of the rotating filter 32.
  • a wiring port 51 is also provided on the side plate 111 corresponding to the second chamber, and the wiring port 51 is mainly used for the functional module of the indoor unit.
  • the power supply circuit or control circuit is connected to an external corresponding circuit; in this embodiment, the auxiliary air inlet 2 is arranged adjacent to the wiring port 51.
  • the wiring port 51 is located at the upper position of the side plate 111, and the auxiliary air inlet 2 is arranged Below the wiring port 51.
  • the air conditioner outdoor unit is provided with a wiring cover 52 on the side plate 111 corresponding to the wiring port 51.
  • One of the functions of the wiring cover 52 is to protect the wiring port 51 to reduce rain and snow in the outdoor environment.
  • the size of the structure design of the wiring cover 52 has been enlarged, so that the wiring cover 52 can at least cover the wiring port 51 and the auxiliary inlet, so that the wiring cover 52 can also support the auxiliary air inlet 2 and the auxiliary inlet.
  • the wind-driven device of the air inlet 2 plays a protective role to prolong the service life of both.
  • the wiring cover 52 is provided with a cover air inlet 521 at a position corresponding to the auxiliary air inlet 2, and the outdoor airflow flows into the wiring cover 52 and the side plate through the cover air inlet 521 In the protective space surrounded by 111, it flows into the second chamber through the auxiliary air inlet 2.
  • Figure 5a is a perspective view of a wiring cover provided by an embodiment of the present disclosure
  • Figure 5b is a perspective view of a wiring cover provided by an embodiment of the present disclosure
  • Figure 5c is a front view of the wiring cover provided by an embodiment of the present disclosure
  • Figure 5d It is a cross-sectional view taken along the line BB in FIG. 5c.
  • the housing air inlet 521 is composed of a plurality of sub-air inlets.
  • the multiple sub-air inlets are arranged side by side in two rows in the longitudinal direction of the wiring cover 52, and each sub-air inlet is thin.
  • the upper and side edges of the shielding strip are connected to the upper and side edges of the sub-inlet, so that the shielding strip and the sub-inlet are enclosed
  • a downward opening is formed, and the external airflow enters the sub-air inlet through the downward opening, and then flows to the auxiliary air inlet 2.
  • the arc-shaped shielding strip can block rain, snow, dust, etc. from above or diagonally above the wiring cover 52.
  • a dust removal port 522 is provided at the bottom of the wiring cover 52 corresponding to the auxiliary air inlet 2, and impurities falling downward can be discharged to the outdoor environment through the dust removal port 522 to avoid excessive impurities accumulated in the wiring cover 52.
  • the number of dust removal openings 522 is multiple, which are arranged side by side on the bottom plate of the wiring cover 52 in two rows.
  • Fig. 6 is a schematic structural diagram of an electric control box provided by an embodiment of the present disclosure.
  • the electric control assembly 4 includes an electric control box 41, an electric control module, and a heat dissipation module.
  • the electronic control box body 41 has a first accommodating portion 411 and a second accommodating portion 412, wherein the first accommodating portion 411 is used for accommodating one or more electronic control modules, and the first accommodating portion 411 is used for accommodating one or more electronic control modules.
  • the accommodating portion 411 is located in the second chamber; the second accommodating portion 412 is used for accommodating the heat dissipation module, which extends into the first chamber through the heat dissipation air outlet and is located on the air inlet side of the outdoor unit fan 122.
  • the heat dissipation module and the first One or more electronic control modules in the accommodating part 411 are in thermal contact, so in addition to using the airflow from the second chamber to the first chamber to dissipate heat from the electronic control module by convection, the heat generated by the electronic control module It can also be transferred to the heat dissipation module through heat conduction, so that the heat dissipation module is air-cooled to dissipate heat.
  • the first accommodating portion 411 in this embodiment is configured as a semi-closed structure. Specifically, the first One or more side walls of the accommodating portion 411 are provided in an opening form, so that the airflow in the second chamber can flow into the first accommodating portion 411 through the opening; at the same time, the first accommodating portion 411 and the second accommodating portion A plurality of ventilation meshes 413 are arranged between 412, and the air entering the first accommodating portion 411 can be blown to the heat dissipation air outlet through the ventilating mesh 413, and the ventilation mesh 413 can be used as a channel for air to flow out of the first accommodating portion 411 , So that the air in the second chamber can continuously flow into the first accommodating portion 411 for heat exchange.
  • the outdoor unit further includes an independent heat dissipation air duct, the air inlet end of the heat dissipation air duct is arranged at the auxiliary air inlet 2 and the air outlet is arranged at the first accommodating part 411, so that, The external air flowing in through the auxiliary air inlet 2 can be directly blown into the first accommodating portion 411 through the heat dissipation air duct for heat exchange.
  • the heat dissipation air duct can make the external air concentrated and used for electricity exchange.
  • the heat dissipation of the control module can be effectively reduced, and the wind pressure loss of the wind driven device can be effectively reduced, thereby accelerating the heat dissipation efficiency of the external air to the electronic control module.
  • the inlet air volume or the inlet wind speed of the wind driving device can be adjusted in a controlled manner.
  • the rotation speed control of the driving motor 31 may be adjusted according to the heat dissipation requirement of the electronic control module or the rotation speed of the fan 122 of the outdoor unit.
  • the electronic control component 4 is provided with a temperature sensor (not shown in the figure), the temperature sensor can be used to detect the real-time temperature of the electronic control component 4, so the current real-time temperature of the electronic control component 4 can be used to determine its heat dissipation Demand, when the real-time temperature measured by the electronic control component 4 is high, it indicates that the heat dissipation demand is high, and vice versa, the heat dissipation demand is low.
  • the electronic control assembly 4 further includes a speed control module (not shown in the figure), and the speed control module is electrically connected to the temperature sensor; for example, the speed control module is configured to detect the temperature by the temperature sensor being less than the first temperature threshold.
  • the speed control module is configured to detect the temperature by the temperature sensor being less than the first temperature threshold.
  • the control of the inlet air volume or the inlet wind speed of the wind driven device is positively correlated with the real-time temperature detected by the temperature sensor, that is, when it is judged based on the real-time temperature that the heat dissipation demand of the electronic control component 4 is high, the wind power is adjusted
  • the intake air volume of the driving device is increased and the intake air speed is accelerated to accelerate the heat exchange effect between the air and the electronic control module, and improve the heat dissipation rate; and when it is judged based on the real-time temperature that the heat dissipation demand of the electronic control module 4 is low, Adjust the wind-driven device to reduce the air inlet air volume and slow down the wind speed, so as to reduce the operating power consumption of the wind-driven device while meeting the heat dissipation requirements of the electronic control module.
  • the rotational speed control module is configured to adjust the air intake volume or the air intake speed of the wind driving device according to the rotational speed of the fan 122 of the outdoor unit.
  • the rotational speed control module is configured to adjust the air intake volume or the air intake speed of the wind driving device according to the rotational speed of the fan 122 of the outdoor unit.
  • the inlet air volume or speed of the wind driven device can be controlled to decrease, and when the actual heat dissipation efficiency is slow, the inlet wind of the wind driven device can be controlled to increase.
  • the air volume or the inlet wind speed can be adapted to the different heat dissipation requirements of the electronic control component 4.
  • the rotation speed control module controls the wind driving device to supply air at the first inlet air volume or the first inlet wind speed;
  • the wind driving device is controlled to send air at the second inlet air volume or the second inlet wind speed.
  • the first inlet air volume is less than the second inlet air volume
  • the second inlet wind speed is less than the second inlet wind speed.
  • the embodiments of the present disclosure also provide an air conditioner, and the air conditioner includes the outdoor unit as shown in any of the foregoing embodiments.
  • the outdoor unit provided by the embodiments of the present disclosure is provided with auxiliary air inlets and a wind driving device on the side wall of the chamber where the electronic control component is located, and the wind driving device is used to drive the external air flow through the electronic control component, thereby not only increasing the flow through the electronic control component.
  • the air flow and flow rate of the components improve the heat dissipation effect of the electronic control components, and can also reduce the air pressure shunt to the outdoor unit fan, thereby reducing the adverse effect on the heat exchange efficiency of the outdoor heat exchanger and ensuring the cooling performance of the air conditioner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

L'invention concerne une unité extérieure, comprenant : un carter extérieur (11) qui définit une première cavité et une seconde cavité, au moins une paroi latérale correspondant à la seconde cavité étant pourvue d'une entrée d'air auxiliaire (2), et une plaque de séparation (112) étant pourvue d'une sortie d'air de dissipation de chaleur ; un dispositif aéromoteur utilisé pour entraîner un écoulement d'air externe de sorte qu'il s'écoule dans la seconde cavité par l'entrée d'air auxiliaire (2) ; et un ensemble de commande électrique (4) situé dans la seconde cavité et correspondant à la sortie d'air de dissipation de chaleur.
PCT/CN2020/130673 2020-07-31 2020-11-20 Unité extérieure et climatiseur WO2021227434A1 (fr)

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