CN106765557B - Indoor unit of air conditioner - Google Patents
Indoor unit of air conditioner Download PDFInfo
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- CN106765557B CN106765557B CN201611082959.XA CN201611082959A CN106765557B CN 106765557 B CN106765557 B CN 106765557B CN 201611082959 A CN201611082959 A CN 201611082959A CN 106765557 B CN106765557 B CN 106765557B
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- heating
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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
- F24F1/0007—Indoor units, e.g. fan coil units
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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
- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T23/00—Apparatus for generating ions to be introduced into non-enclosed gases, e.g. into the atmosphere
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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Abstract
The invention relates to an indoor unit of an air conditioner, which comprises an electric heating device arranged between a heat exchange device and a fan assembly. The electric heating device comprises a heating beam and a heating frame, the heating frame is arranged on the front side of the centrifugal fan and surrounds an air inlet of the centrifugal fan, the top of the heating frame is connected with the heating beam, and the electric heating device further heats air subjected to heat exchange through the heat exchange device so as to improve the heating effect of the indoor unit of the air conditioner. The heating frame in the electric heating device forms an enclosure ring which encloses the air inlet of the centrifugal fan. When the indoor unit of the air conditioner heats, air flowing out of the heat exchange device can be fully contacted with the electric heating device at the air inlet, so that the heating efficiency of the electric heating device is higher, and the heat energy is more fully utilized.
Description
Technical Field
The invention relates to the air conditioning technology, in particular to an air conditioner indoor unit.
Background
The general air conditioner has an electric heating device, or an auxiliary electric heater and an electric auxiliary, which is a component of the air conditioning system. When a user uses the air conditioner to heat and warm in winter, the heating effect of the air conditioning unit can be greatly reduced due to lower outdoor temperature, and the heating requirement can not be met if the user completely depends on the working efficiency of the air conditioner heating circulating system. In order to better meet the heating requirement of users, an auxiliary heater needs to be supplemented on the basis of a central air conditioning unit. The auxiliary heater can be used independently or simultaneously with the heating circulation system. The auxiliary heater is connected with the air path of the air conditioner, and air enters the room after being heated by the auxiliary electric heater during heating in winter to output heat.
The electric heating device of present air conditioner is for setting up a heating rod near the fan usually, but this kind of heating rod structure singleness, with air heat exchange few, heat utilization rate is low, can not satisfy the auxiliary heating demand.
Disclosure of Invention
An object of the present invention is to overcome at least one of the drawbacks of the prior art and to provide an indoor unit of an air conditioner.
It is another object of the present invention to improve the heating efficiency of an electric heating device.
Another object of the present invention is to improve the air blowing amount, the air speed and the air blowing efficiency of the ion wind generating apparatus.
In order to achieve the above object, the present invention provides an indoor unit of an air conditioner, comprising: the air conditioner comprises a shell, a fan and a control device, wherein the shell is provided with an air inlet positioned on the front side of the shell, a lower air outlet positioned at the lower part of the shell, and a first lateral air outlet and a second lateral air outlet which are respectively positioned on two sides of the shell and face the lateral front of the shell; the heat exchange device is arranged in the shell and is configured to exchange heat with air flowing through the shell; the fan assembly is arranged on the rear side of the heat exchange device, comprises two centrifugal fans which are arranged side by side along the transverse direction, and is configured to enable air subjected to heat exchange by the heat exchange device to flow towards the lower air outlet, the first lateral air outlet and the second lateral air outlet respectively; the electric heating device is arranged between the heat exchange device and the fan assembly and comprises a heating cross beam and a heating frame, the heating cross beam is transversely arranged at the tops of the front sides of the two centrifugal fans along the air-conditioning indoor unit, the heating frame is arranged at the front sides of the centrifugal fans and surrounds an air inlet of the centrifugal fans, the top of the heating frame is connected with the heating cross beam, and the electric heating device is configured to further heat air subjected to heat exchange through the heat exchange device so as to improve the heating effect of the air-conditioning indoor unit.
Optionally, the heating frame is formed by sequentially connecting 4 heating rods end to end.
Optionally, one of the connection end points of the heating frame is provided with a connection rib, and the connection rib is inserted into the heating beam to realize the fixed connection and the heat conduction between the heating beam and the heating frame.
Optionally, two sides of the fan assembly are further respectively provided with a vertical plate for fixedly supporting the heating beam.
Optionally, the indoor unit of an air conditioner further includes: the first ion wind generating device and the second ion wind generating device are respectively arranged on flow paths from the fan assembly to the first lateral air outlet and the second lateral air outlet in the shell, and are configured to enable air subjected to heat exchange through the heat exchange device to respectively flow towards the first lateral air outlet and the second lateral air outlet through an air channel of the fan assembly through electric field force.
Optionally, the indoor unit of an air conditioner further includes: the first air guide channel and the second air guide channel respectively extend to the first lateral air outlet and the second lateral air outlet from the inner bending of the machine shell so as to respectively guide air flowing to the first lateral air outlet and the second lateral air outlet through an air duct of the fan assembly.
Optionally, the cabinet comprises a rear housing for constituting a rear portion thereof and a front panel for constituting a front portion thereof, wherein the front panel is configured to be pivotably connected to a front side of the rear housing in a front-rear direction about a bottom pivot axis thereof extending in a transverse direction to form an air inlet of the cabinet between the front panel and the rear housing when the front panel is controllably pivoted forward about the bottom pivot axis to an open position.
Optionally, the chassis further comprises: the first side air duct and the second side air duct are respectively positioned at the two transverse ends between the rear shell and the front panel, and the outer side ports of the first side air duct and the second side air duct respectively form a first side air outlet and a second side air outlet; the first air guide channel and the second air guide channel are respectively formed inside the first side air guide cylinder and the second side air guide cylinder, and the first ion wind generating device and the second ion wind generating device are respectively positioned in the first air guide channel and the second air guide channel. (ii) a And is
Optionally, the fan assembly and the first and second ion wind generating devices are configured to be controlled to alternatively start operation, so that the indoor unit of the air conditioner works in a rapid cooling/rapid heating mode in which the air supply is driven only by the fan assembly or a silent mode in which the air supply is driven only by the first and second ion wind generating devices; and a movable air deflector is arranged at the lower air outlet and is configured to controllably open the lower air outlet in a quick cooling/quick heating mode and controllably close the lower air outlet in a mute mode.
Optionally, the first ion wind generating device and the second ion wind generating device each include at least one discharge module, each discharge module has a metal mesh and a plurality of discharge needles located inside the metal mesh and arranged in an array, wherein a distance L between a needle point of each discharge needle and the metal mesh is set so that it satisfies: l ═ aL1Wherein a is any constant in the range of 0.7-1.3, L1To make the wind speed of the ion wind at the wind speed central point of the metal net reach the maximum wind speed VmaxThe distance between the needle point of the discharge needle and the metal mesh, and the wind speed central point of the metal mesh are projection points of the needle point of the discharge needle on the metal mesh; the distance R between the needle tips of two adjacent discharge needles is set so that the distance R satisfies the following conditions: r ═ aR1, where R1 is the wind speed measurement with wind speed up to b times the maximum wind speed VmaxThe distance between the point and the wind speed central point, b is any constant within the range of 0.3-0.7.
Optionally, each of the first ion wind generating device and the second ion wind generating device comprises a plurality of discharging modules which are sequentially arranged and connected in parallel or in series, and each discharging module is provided with a metal mesh and a plurality of discharging needles which are positioned on the inner side of the metal mesh and arranged in an array; and the discharge needles of two adjacent discharge modules are arranged in a straight-line opposite mode or in a staggered mode.
The air conditioner indoor unit comprises an electric heating device arranged between a heat exchange device and a fan assembly. The electric heating device comprises a heating beam and a heating frame, the heating frame is arranged on the front side of the centrifugal fan and surrounds an air inlet of the centrifugal fan, the top of the heating frame is connected with the heating beam, and the electric heating device further heats air subjected to heat exchange through the heat exchange device so as to improve the heating effect of the indoor unit of the air conditioner. The heating frame in the electric heating device forms an enclosure ring which encloses the air inlet of the centrifugal fan. When the indoor unit of the air conditioner heats, air flowing out of the heat exchange device can be fully contacted with the electric heating device at the air inlet, so that the heating efficiency of the electric heating device is higher, and the heat energy is more fully utilized.
Furthermore, the invention can ensure that the ion wind generating device can generate uniform ion wind with larger wind quantity by reasonably designing the spatial position relationship between the discharge needles of the ion wind generating device and the metal net and reasonably distributing the position relationship among a plurality of discharge needles, thereby improving the wind supply speed, the wind supply quantity and the wind supply efficiency of the ion wind generating device.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic structural view of an indoor unit of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic side view of an air conditioning indoor unit according to an embodiment of the present invention;
fig. 3 is a schematic front view of an air conditioning indoor unit according to an embodiment of the present invention;
fig. 4 is a schematic bottom view of an air conditioning indoor unit according to an embodiment of the present invention;
fig. 5 is a schematic structural exploded view of an air conditioning indoor unit according to an embodiment of the present invention;
fig. 6 is a schematic view of an electric heating apparatus of an indoor unit of an air conditioner according to an embodiment of the present invention;
FIG. 7 is a schematic exploded view of a discharge module of the ion wind generating device according to an embodiment of the present invention;
fig. 8 is a schematic cross-sectional view of a discharge module according to an embodiment of the present invention.
Detailed Description
An air conditioning indoor unit according to an embodiment of the present invention is provided, fig. 1 is a schematic structural view of an air conditioning indoor unit according to an embodiment of the present invention, fig. 2 is a schematic side view of an air conditioning indoor unit according to an embodiment of the present invention, fig. 3 is a schematic front view of an air conditioning indoor unit according to an embodiment of the present invention, fig. 4 is a schematic bottom view of an air conditioning indoor unit according to an embodiment of the present invention, and fig. 5 is a schematic structural exploded view of an air conditioning indoor unit according to an embodiment of the present invention. Referring to fig. 1 to 5, an air conditioning indoor unit 1 according to an embodiment of the present invention includes a casing 10, a heat exchanging device 20 disposed in the casing 10, a fan assembly 30 disposed at a rear side of the heat exchanging device 20, and a first ion wind generating device 40 and a second ion wind generating device 50.
The cabinet 10 has an air inlet 120 at a front side thereof, a lower air outlet 111 at a lower portion of the cabinet 10, and a first lateral air outlet 112 and a second lateral air outlet 113 at both sides of the cabinet 10 and facing a lateral front of the cabinet 10, respectively. Specifically, the design of the orientation of each air outlet of the invention can be such that: the wind sent out through the first side wind outlet 112 and the second side wind outlet 113 is blown to the side front of the cabinet 10, and the wind sent out through the lower wind outlet 111 is blown to the lower front of the cabinet 10. That is, the air sent out from each air outlet can directly reach the normal moving area of the user, thereby forming the effect of air supply from the left, the right and the lower surfaces, weakening the limit on the installation position of the indoor unit 1 of the air conditioner, increasing the air supply angle of the indoor unit 1 of the air conditioner, enlarging the air supply range and improving the cooling/heating efficiency.
Meanwhile, the special design of the present invention, in which the air inlet 120 is disposed at the front side of the casing 10 and the fan assembly 30 is disposed at the rear side of the heat exchanging device 20, not only can better support the fan assembly 30, but also can allow the indoor unit 1 of the air conditioner to be installed at a position where there is no gap between the top of the indoor unit and the ceiling. That is, even if the top of the indoor unit 1 abuts against the indoor wall, the indoor unit can still normally enter and exit air, so that the limitation on the installation position is further weakened, the installation flexibility is improved, and the use environment is expanded.
The heat exchanging device 20 is configured to exchange heat with air flowing therethrough to change the temperature of the air flowing therethrough into cold air or hot air. The fan assembly 30 is configured to promote the air heat-exchanged by the heat exchanging device 20 to flow towards the lower air outlet 111, the first lateral air outlet 112 and the second lateral air outlet 113 respectively. The first ion wind generating device 40 and the second ion wind generating device 50 are respectively disposed on a flow path from the fan assembly 30 to the first lateral wind outlet 112 and the second lateral wind outlet 113 in the enclosure 10, and are configured to cause the air after heat exchange by the heat exchanging device 20 to respectively flow toward the first lateral wind outlet 112 and the second lateral wind outlet 113 via the wind channel of the fan assembly 30 by an electric field force. That is, two ion wind generating devices may be located at both lateral sides of the fan assembly 30, so that the thickness of the air conditioning indoor unit 1 in the front and rear direction may be reduced. More importantly, the fan assembly 30 and the two ion wind generating devices supply air to the three air outlets, so that on one hand, the whole air supply quantity and the air supply speed of the indoor unit 1 of the air conditioner are ensured, and on the other hand, the two ion wind generating devices make particles in the air obtain kinetic energy by virtue of electric field force, and ion wind is formed. Compared with a rotary air supply assembly (such as a fan), the ion wind generating device has the advantages of pressure loss, low energy consumption, low noise and the like. Compared with the condition that the fan is used for supplying air, the invention reduces the whole noise of the air conditioner indoor unit 1 during operation to a certain extent. Meanwhile, the ion wind generated by the ion wind generating device is not generated by pressure, but is a soft wind close to nature generated by electric field force, so that the comfort level of the air-conditioning indoor unit 1 can be improved. In addition, since the ion wind is formed by a high-voltage electric field, it has the function of sterilizing and decomposing harmful gas pollutants with high efficiency.
In some embodiments of the present invention, referring to fig. 3, an inner side edge 1121 of the first lateral air outlet 112, which is close to a vertical bisecting plane S extending in the front-rear direction of the air conditioning indoor unit 1, is located more forward than an outer side edge 1122 of the first lateral air outlet 112, which is far from the vertical bisecting plane S, so that the first lateral air outlet 112 faces the outer side front of the casing 10. That is, the inner edge 1121 and the outer edge 1122 of the first lateral air outlet 112 are located at different positions in the lateral direction and the front-rear direction, the inner edge 1121 is closer to the vertically bisected plane of the air conditioning indoor unit 1 extending in the front-rear direction than the outer edge 1122 thereof, and the inner edge 1121 is located laterally forward of the outer edge 1122 thereof, so that the first lateral air outlet 112 is directed obliquely outward toward the front of the cabinet.
Further, the second lateral air outlet 113 and the first lateral air outlet 112 are symmetrically disposed. That is, the inner edge 1131 of the second lateral outlet 113 is more forward than the outer edge 1132 of the second lateral outlet 113. In other words, the inside edge 1131 and the outside edge 1132 of the second lateral air outlet 113 are located at different positions in the lateral direction and the front-rear direction, the inside edge 1131 is closer to the vertical bisecting plane S of the indoor unit 1 extending in the front-rear direction than the outside edge 1132, and the inside edge 1131 is located laterally forward of the outside edge 1132, so that the second lateral air outlet 113 faces obliquely outward toward the front of the cabinet.
Therefore, the three air outlets of the indoor air conditioner 1 can supply air towards the front of the transverse outer side of the casing 10 and the front of the lower part of the casing respectively to form an encircling air supply effect, so that the air supply range of the indoor air conditioner 1 is further expanded, cold air or hot air is prevented from being directly blown to a human body, the uniformity of indoor temperature is improved, the comfort level of the indoor air conditioner 1 is further improved, and the use experience of a user is better.
In some embodiments of the present invention, referring to fig. 5, the air conditioning indoor unit 1 further includes a first air guiding channel 61 and a second air guiding channel 62, and the first air guiding channel 61 and the second air guiding channel 62 respectively extend from the inside of the casing 10 to the first lateral air outlet 112 and the second lateral air outlet 113 in a bending manner, so as to respectively guide air flowing to the first lateral air outlet 112 and the second lateral air outlet 113 through the air duct of the fan assembly 30. Therefore, the air sent out from the two lateral air outlets can be blown to the left front side and the right front side of the shell, the air-conditioning indoor unit 1 can be further ensured to form an encircling air supply effect, the resistance in the air flow flowing process can be reduced, and the air speed and the air volume of the two lateral air outlets are improved.
In some embodiments of the present invention, the first wind guiding channel 61 is a column shape, which extends along a circular arc curve from inside to outside. It will be understood by those skilled in the art that the terms "inner" and "outer" as used herein refer to both the interior and exterior of the enclosure 10. The second air guiding channel 62 and the first air guiding channel 61 are symmetrically arranged, that is, the second air guiding channel 62 is also tubular, and the cross section of the second air guiding channel extends along the same circular arc-shaped curve from inside to outside. The circle center of the circle of the circular arc curve is positioned at the front side of the circular arc curve, namely the circular arc curve has a shape which is convexly curved backwards. Therefore, airflow can flow more smoothly, airflow resistance is further reduced, and the air speed and the air volume of the lateral air outlet are improved; and the first lateral air outlet 112, the second lateral air outlet 113 and the lower air outlet 111 can more easily form a looping air supply effect, so that the indoor unit 1 of the air conditioner is ensured to have the best comfort level.
In some embodiments of the present invention, referring to fig. 1 and 2, the cabinet 10 includes a rear case 14 for constituting a rear portion thereof and a front panel 13 for constituting a front portion thereof. The front panel 13 is configured to be pivotably connected to the front side of the rear housing 14 in the front-rear direction about its bottom pivot axis extending in the lateral direction to form an air intake opening 120 of the cabinet 10 between the front panel 13 and the rear housing 14 when the front panel 13 is controllably pivoted forward about its bottom pivot axis to an open position.
Specifically, the bottom of the front panel 13 is pivotably connected to the bottom front side of the rear housing 14 in the front-rear direction, and the front panel 13 is configured to be controllably pivoted between its open position and closed position. When the air conditioning indoor unit 1 is started, the front panel 13 is controllably pivoted forward about its bottom pivot axis to the open position, so that the air inlet opening 120 of the cabinet 10 is formed at the upper portion and both lateral side portions between the front panel 13 and the rear casing 14. When the front panel 13 is controllably pivoted backward about its bottom pivot axis to the closed position after the air conditioning indoor unit 1 stops operating, the circumferential edge of the front panel 13 abuts against at least a part of the circumferential edge of the rear casing 14 and the edges of other components, so that the air inlet 120 of the cabinet 10 disappears. Therefore, the front panel 13 is specially designed, so that a normal air inlet can be formed at the front side of the air-conditioning indoor unit 1 when the air-conditioning indoor unit 1 operates, and the shell 10 of the air-conditioning indoor unit 1 can form a whole with a compact structure and a uniform appearance when the air-conditioning indoor unit 1 stops operating, so that the occupied space of the air-conditioning indoor unit 1 in a non-operating state is reduced, and the appearance effect of the air-conditioning indoor unit is improved.
Further, referring to fig. 5, the rear case 14 may have a body 141 extending vertically, and upper and lower edge portions 142 and 143 extending forward from upper and lower sides of the body 141. The body 141 may be provided with a hanging hole for hanging the indoor unit 1 of an air conditioner on a wall. The lower outlet 111 may be formed at the lower edge 143 of the rear case 14 in a bar shape extending in the lateral direction.
In some embodiments of the present invention, the cabinet 10 further includes a first side air duct 151 and a second side air duct 152. The first side air duct 151 and the second side air duct 152 are respectively located at two lateral ends between the rear casing 14 and the front panel 13, that is, the first side air duct 151 and the second side air duct 152 are both located in a space defined between the rear casing 14 and the front panel 13 and are respectively located at two lateral ends of the space. The outer ports of the first and second side air ducts 151 and 152 form the first and second lateral outlets 112 and 113, respectively. Since the inner edge 1121 of the first lateral outlet 112 is located more forward than the outer edge 1122 thereof, the inner edge 1121 and the outer edge 1122 of the first lateral outlet 112 are the front edge and the rear edge of the outer port of the first lateral air duct 151, respectively. Similarly, the inner edge 1131 and the outer edge 1132 of the second lateral air outlet 113 are the front edge and the rear edge of the outer port of the second lateral air duct 151, respectively.
It should be emphasized that the outer side ports of the first and second side air guiding drums 151 and 152 are referred to as their respective ports exposed to the outside of the casing 10, and accordingly, the first and second side air guiding drums 151 and 152 also respectively have inner side ports hidden in the inside of the casing 10, and the two inner side ports are respectively connected with two lateral air outlets (i.e. the volute air outlets of two centrifugal fans described later) of the fan assembly 20. Specifically, the first and second side air ducts 151 and 152 may be respectively fixed with the fan assembly 30 at the inner ports thereof by screwing, clipping, or other suitable means.
Further, the first wind guiding channel 61 and the second wind guiding channel 62 are respectively formed inside the first side wind guiding cylinder 151 and the second side wind guiding cylinder 152, and the first ion wind generating device 40 and the second ion wind generating device 50 are respectively located in the first wind guiding channel 61 and the second wind guiding channel 62, that is, the two ion wind generating devices are respectively located inside the two side wind guiding cylinders. Specifically, the first side air duct 151 may be a tubular body that is bent and extended along the arc-shaped curve from one of the lateral air outlets of the fan assembly 30 (for example, a volute air outlet of the first centrifugal fan 31) to the first lateral air outlet 112, and the tubular body defines the first air guiding channel 61 therein. Similarly, the second side air duct 152 may be a tubular body that is bent and extended along the arc-shaped curve from another lateral air outlet (for example, a volute air outlet of the second centrifugal fan 32) of the fan assembly 30 to the second lateral air outlet 113, and the second air guiding channel 62 is defined in the tubular body. The first ion wind generating device 40 is disposed in the first side air duct 151, and the second ion wind generating device 50 is disposed in the second side air duct 152. Thus, the width of the air conditioning indoor unit 1 in the lateral direction can be reduced to further reduce the size of the space occupied by the air conditioning indoor unit.
In some embodiments of the present invention, the fan assembly 30 and the first ion wind generating device 40 and the second ion wind generating device 50 are configured to be selectively activated to operate the indoor unit 1 in a fast cooling/fast heating mode in which the fan assembly 30 is used to drive the air supply or a silent mode in which the first ion wind generating device 40 and the second ion wind generating device 50 are used to drive the air supply. The lower outlet 111 is provided with a movable air deflector 114, and the movable air deflector 114 is configured to controllably open the lower outlet 111 in a rapid cooling/rapid heating mode and controllably close the lower outlet 111 in a silent mode. That is to say, the controllable movable air deflector 114 is arranged at the lower air outlet 111, and the start and stop of the fan assembly 30 and the two ion wind generating devices are controlled, so that the air-conditioning indoor unit 1 at least has two working modes of rapid cooling/rapid heating and silencing, thereby simultaneously meeting multiple use requirements of different users or the same user under different conditions and improving the use experience of the user. Meanwhile, the controllable movable air deflector 114 can prevent an undesired air path from being formed inside the casing 10 or prevent air flow from leaking outside, thereby ensuring that a certain pressure can be formed inside the casing 10 in both modes (from the silent mode), and further improving the air speed and the air volume of the corresponding air outlet.
Specifically, in the rapid cooling/rapid heating mode, the two ion wind generating devices are not started to operate, and the movable air deflector 114 is controlled to open the lower air outlet 111. The air-conditioning indoor unit simultaneously drives air supply to the lower air outlet 111 and the two side air outlets only through the fan assembly 30. Since the fan assembly 30 has a relatively large air supply amount and a relatively high cooling efficiency or heating efficiency, the indoor temperature can be rapidly relieved. This mode is suitable for the case where the air conditioning indoor unit 1 starts to operate or other cases where rapid cooling or heating is required. In the silent mode, the fan assembly 30 is not started to operate, and the movable air deflector 114 is controlled to close the lower air outlet 111. The air conditioner indoor unit drives the air supply to the two side air outlets only through the two ion wind generating devices, on one hand, the air is simultaneously supplied through the two side air outlets, the air supply range is expanded, and the air supply quantity is improved; on the other hand, the working noise of the ion wind generating device in operation is close to or even lower than the indoor background noise, the integral noise of the indoor unit 1 of the air conditioner in operation is greatly reduced, and the industrial problem of ultra-low silence air supply is solved. The mode is suitable for use environments such as medical treatment and child monitoring, and the situation that the indoor unit 1 of the air conditioner runs for a period of time.
Of course, in other embodiments of the present invention, the indoor unit 1 may have a high-speed air supply mode in addition to the rapid cooling/rapid heating mode and the mute mode. In this mode, the fan assembly 30 and the two ion wind generating devices can be controlled to start and operate simultaneously to supply air to the three air outlets simultaneously. The mode is suitable for the situations of more rapid cooling or rapid heating and other situations with higher requirements on wind speed.
In some embodiments of the present invention, referring to fig. 4 and 5, the fan assembly 30 includes two centrifugal fans, such as a first centrifugal fan 31 and a second centrifugal fan 32, arranged side by side in the transverse direction. The first centrifugal fan 31 and the second centrifugal fan 32 may be forward-direction centrifugal fans or backward-direction centrifugal fans. The heat exchange device 20 is a flat plate evaporator to improve heat exchange efficiency and reduce the thickness of the indoor unit 1 in the front-rear direction, thereby reducing the volume of the indoor unit 1. The width of the evaporator in the transverse direction is approximately equal to the sum of the widths of the two centrifugal fans in the transverse direction, so that the air subjected to heat exchange by the evaporator flows into the air ducts of the two centrifugal fans.
Further, a fixing bracket 80 for fixing the heat exchanging device 20 may be disposed between the fan assembly 30 and the heat exchanging device 20, and the heat exchanging device 20 and the fixing bracket 80, and the fixing bracket 80 and the rear housing 14 may be fixed together by screw connection, clamping connection, or other suitable connection methods. A motor fixing plate 90 is further disposed between the fan assembly 30 and the rear housing 14, and a motor for driving the centrifugal impellers of the two centrifugal fans to rotate is fixed on the motor fixing plate 90.
Fig. 6 is a schematic cross-sectional view taken along a sectional line a-a in fig. 3. In some embodiments of the present invention, referring to fig. 5 and 6, the fan assembly 30 includes a bottom air guiding channel 33 for guiding air to flow to the lower air outlet 111, and the bottom air guiding channel 33 is inclined forward from top to bottom to a bent portion and then extends vertically downward to the lower air outlet 111, so that the lower air outlet 111 blows air in a range of 0-85 ° below a horizontal plane where the lower air outlet is located. Specifically, after being guided by the bottom air guide passage 33, the lower air blowing port 111 can blow air in a region between a broken line m and a broken line n in fig. 6, where a curved arrow between the broken line m and the broken line n is a substantial flow direction of the air flow. Therefore, when the air-conditioning indoor unit 1 heats, the lower air outlet 111 can blow down hot air which forms an angle of 85 degrees with the horizontal plane, thereby overcoming the technical problems that the hot air is easy to rise and is difficult to blow down.
Further, referring to fig. 5, the first centrifugal fan 31 and the second centrifugal fan 32 have their respective volutes and centrifugal impellers accommodated in the volutes, respectively. An air inlet is formed in one side, facing the heat exchange device 20, of the volute, a fan lining plate 34 is arranged on one side, facing away from the heat exchange device 20, of the volute, and the fan lining plate 34 and the volutes of the two centrifugal fans jointly form an air channel of the fan assembly 30. The air outlet of the volute 311 of the first centrifugal fan 31 and the air outlet of the volute 321 of the second centrifugal fan 32 face away from each other toward the two lateral sides of the casing 10. Specifically, the air outlet of the volute 311 of the first centrifugal fan 31 faces the left side of the casing 10, i.e. the side where the first lateral air outlet 112 is located, and the air outlet of the volute 321 of the second centrifugal fan 32 faces the right side of the casing 10, i.e. the side where the second lateral air outlet 113 is located. The volute 311 of the first centrifugal fan 31 and the volute 321 of the second centrifugal fan 32 are independent from each other, so that the airflows blowing to the first lateral air outlet 112 and the second lateral air outlet 113 are independent from each other and do not affect each other, thereby avoiding airflow disorder.
Fig. 6 is a schematic view of an electric heating device 35 of an air conditioning indoor unit according to an embodiment of the present invention. In this embodiment, the front sides of the two centrifugal fans are further provided with electric heating devices 35, i.e. the electric heating devices 35 are provided between the fan assembly 30 and the fixing bracket 80. The above electric heating apparatus includes: a heating beam 351 and a heating frame 352. The heating beam 351 is transversely arranged at the top of the front sides of the two centrifugal fans along the air conditioner indoor unit 1, the heating frame 352 is arranged at the front side of the centrifugal fans and surrounds the air inlet 36 of the centrifugal fans, and the top of the heating frame 352 is connected with the heating beam 351. The number of the heating frames 352 may be 1 or 2, one heating frame 352 may be provided at the front side of each centrifugal fan, or one heating frame 352 may be provided at the front side of one of the centrifugal fans.
The electric heating device 35 is used for further heating the air after heat exchange by the heat exchange device 20 so as to improve the heating effect of the indoor unit 1 of the air conditioner, and particularly when the heating effect of the air conditioner is not good, the electric heating device 35 is turned on to perform auxiliary heating on the air.
In this embodiment, two sides of the fan assembly 30 are further respectively provided with a vertical plate 353 for fixedly supporting the heating beam 351, and two ends of the heating beam 351 are respectively fixed to the top ends of the two vertical plates 353. The heating frame 352 is formed by sequentially connecting 4 heating rods end to form a quadrilateral structure, and the hollow part of the heating frame 352 exposes the air inlet 36 of the centrifugal fan to ensure the normal operation of air flow. The connection end points of the top of the heating frame 352 are provided with connection ribs, which can be inserted into the heating beam to achieve the fixed connection and heat conduction between the heating beam 351 and the heating frame 352. The top of splice bar still is provided with the trompil, and the last relevant position of centrifugal fan spiral case is provided with the arch, and protruding card is gone into the trompil of splice bar to realize heating crossbeam 351, heating frame 352 and fan assembly 30 three within a definite time fixed, improve electric heater unit 35's stability.
The heating frame 352 of the electric heating device 35 of this embodiment forms an enclosure surrounding the inlet 36 of the centrifugal fan. When the air conditioning indoor unit 1 heats, the air flowing out of the heat exchanging device 20 can fully contact with the electric heating device 35, so that the electric heating device 35 has higher heating efficiency and more sufficient heat energy utilization.
When the air conditioning indoor unit 1 only drives the fan assembly 30 to supply air, under the drive of the centrifugal impeller, ambient air flows to the heat exchanging device 20 through the air inlet 120, cold air or hot air after heat exchange by the heat exchanging device 20 enters the air duct of the fan assembly 30 through the volute air inlets of the first centrifugal fan 31 and the second centrifugal fan 32, and finally flows to the first lateral air outlet 112, the second lateral air outlet 113 and the lower air outlet 111 through the volute 311 air outlet of the first centrifugal fan 31, the volute 321 air outlet of the second centrifugal fan 32 and the bottom air guiding channel 33, so as to achieve the air outlet effect of surrounding the left, right and lower three surfaces. During heating, the hot air after heat exchange by the heat exchange device 20 can be heated by the electric heating device 35, and then respectively enter the centrifugal fan.
When the air conditioning indoor unit 1 has only two ion wind generating devices to drive the air supply, under the action of the electric field force, the ambient air flows to the heat exchanging device 20 through the air inlet 120, the cold air or the hot air after heat exchange by the heat exchanging device 20 enters the air duct of the fan assembly 30 through the volute air inlets of the first centrifugal fan 31 and the second centrifugal fan 32, and finally flows to the first lateral air outlet 112 and the second lateral air outlet 113 through the volute 311 air outlet of the first centrifugal fan 31 and the volute 321 air outlet of the second centrifugal fan 32, so that the left and right two-sided surrounding air supply effect is realized. At this time, the centrifugal impeller of the fan assembly does not produce any driving action.
Therefore, the two working modes of independently driving air supply by the fan assembly 30 and independently driving air supply by the two ion air generating devices can share the air duct of the fan assembly 30, so that the structure of the indoor unit 1 of the air conditioner is simplified, and the volume of the indoor unit is reduced.
The first ion wind generating device 40 and the second ion wind generating device 50 are respectively arranged at the air outlet of the volute 311 of the first centrifugal fan 31 and the air outlet of the volute 321 of the second centrifugal fan 32, so that the thickness of the indoor air conditioner 1 in the front-back direction is further reduced, the appearance effect of the indoor air conditioner 1 is optimized, and the requirement of a user on a small installation space of the indoor air conditioner 1 is met.
Fig. 7 is a schematic exploded view of a discharge module of the ion wind generating device according to an embodiment of the present invention. In some embodiments of the present invention, referring to fig. 7, each of the first ion wind generating device 40 and the second ion wind generating device 50 includes at least one discharge module 410. Each discharge module 410 has a metal mesh 411 and a plurality of discharge needles 412 located inside the metal mesh 411 and arranged in an array. The needle point of the discharge needle 412 is close to the metal net 411, positive and negative high voltage electrodes are respectively applied on the discharge needle 412 and the metal net 411, the discharge needle 412 is equivalent to a radiation electrode for generating corona discharge, and the metal net 411 is equivalent to a receiving electrode. It should be emphasized that the inner side referred to herein means a side of the metal net 411 toward the geometric center of the cabinet 10, and the outer side opposite to the inner side means a side of the metal net 411 toward the outside of the cabinet 10. That is, the flow direction of the ion wind generated by each discharge module 410 is from the inside to the outside, and the arrangement direction of the plurality of discharge needles 412 and the metal mesh 411 is the same as the flow direction of the ion wind.
Fig. 8 is a schematic cross-sectional view of a discharge module according to an embodiment of the present invention. Referring to fig. 8, in order to increase the blowing speed of the ion wind generating apparatus, the designer of the present invention has performed a number of wind speed measurement experiments, and as a result of the experiments, it was found that the distance L between the tip of each discharge needle 412 and the metal mesh 411 is set to satisfy L ═ aL1(wherein a is any constant in the range of 0.7-1.3, i.e. a can be 0.7, 0.8, 0.9, 1.0, 1.1, 1.2 or 1.3, L1So that the wind speed of the ion wind at the wind speed center point of the metal mesh 411 reaches the maximum wind speed VmaxThe distance between the needle point of the discharge needle 412 and the metal mesh 411, and the wind speed center point of the metal mesh 411 is the projection point of the needle point of the discharge needle 412 on the metal mesh 411), on the one hand, the wind speed of the ion wind generated by the two ion wind generating devices can better meet the normal use requirement of a user, and on the other hand, the discharge needle 412 can be partially overlapped in the area of the metal mesh 411 generating effective ion wind to achieve the projection effect of the shadowless lamp, so that the ion wind distribution of the metal mesh 411 is more uniform.
In order to improve the feeding of the ion wind generating deviceAir volume, the designer of the present invention has performed a large number of experiments for measuring the projection radius of the needle tip, and as a result of the experiments, it has been found that the distance R between the needle tips of two adjacent discharge needles 412 is set so as to satisfy R ═ aR1(wherein, R1For the wind speed to reach the maximum wind speed VmaxB times the distance between the wind speed measuring point and the wind speed central point, wherein b is any constant in the range of 0.3-0.7, namely b can be 0.3, 0.4, 0.5, 0.6 or 0.7, and the value of a is the same as the above), the air volume of the ion wind generated by the two ion wind generating devices can better meet the normal use requirement of a user. Meanwhile, after the distance between two adjacent discharge needles 412 is specially designed, the mutual offset of wind speeds caused by too close distance between two adjacent discharge needles 412 can be avoided, and the reduction of wind volume and the uneven distribution of wind volume caused by too far distance between two discharge needles 412 can be avoided.
Therefore, the ion wind generating device can generate the ion wind with uniform and large wind quantity by reasonably designing the spatial position relationship between the discharge needles 412 and the metal mesh 411 and reasonably arranging the position relationship between the discharge needles 412, so that the wind speed, the wind quantity and the wind efficiency of the ion wind generating device are improved.
In some embodiments of the present invention, each of the first ion wind generating device 40 and the second ion wind generating device 50 includes a plurality of discharge modules 410 arranged in sequence and connected in parallel or in series, and each of the discharge modules 410 has a metal mesh 411 and a plurality of discharge needles 412 located inside the metal mesh 411 and arranged in an array. Therefore, a corona discharge phenomenon is generated between the discharge needle 412 in each discharge module 410 and the corresponding metal mesh 411, so that the ion wind can be accelerated for multiple times through the plurality of discharge modules 410, the superposition of the wind speed can be realized, and the higher wind outlet speed can be obtained. And negative pressure can be formed under the action of high-speed air outlet, so that the air inlet volume is further increased, and the air supply speed, the air supply volume and the air supply efficiency of the multi-stage ion air supply module are improved.
In some embodiments of the present invention, the discharge needles 412 of two adjacent discharge modules 410 are arranged in a straight pair, that is, the projections of the discharge needles 412 of each two adjacent discharge modules in the air outlet plane of the ion wind generating device coincide. Therefore, a larger and stronger electric field is generated in the region corresponding to the tip of each discharge needle 412, so that an ion wind with a higher local wind speed is generated in the region, and the ion wind blows on the user body and has a stronger wind feeling. In other words, this arrangement can obtain a local large wind speed near each wind speed center point of the metal mesh 411, so as to improve the wind feeling when the air-conditioning indoor unit 1 is driven by the ion wind generating device to supply wind alone.
In some alternative embodiments of the present invention, the discharge needles 412 of two adjacent discharge modules 410 are arranged in a staggered manner. One of the dislocation arrangement modes is as follows: the discharge needles 412 of every two adjacent discharge modules are arranged in a staggered manner in a direction perpendicular to the air outlet surface of the ion wind generating device 10, and the projections of the corresponding discharge needles 412 of every two adjacent discharge modules in the air outlet surface of the ion wind generating device 10 are on the same horizontal line (i.e., the discharge needles 412 of every two adjacent discharge modules are arranged in a staggered manner, but the heights of the corresponding discharge needles 412 are the same). Therefore, uniform soft wind can be generated in a plurality of linear regions in the horizontal direction, and the superposition of a plurality of discharge modules can form a larger and stronger electric field in the linear regions, so that the wind speed of the ion wind in the linear regions is relatively higher. Further, the projections of each group of three adjacent discharge needles formed by the discharge needles 412 of the plurality of discharge modules in the horizontal plane all form an isosceles triangle, so as to ensure that the ion wind generated by the ion wind generating device is distributed uniformly.
Another staggered arrangement mode is as follows: the discharge needles 412 of every two adjacent discharge modules are arranged in a staggered manner in the direction perpendicular to the air outlet surface of the ion wind generating device and in the vertical direction. Therefore, the ion wind generated by the ion wind generating device can be uniformly distributed in the wind outlet surface of the ion wind generating device, so that soft, uniform and large-wind-volume air supply can be realized under the conditions of low voltage, low electric field intensity and low power. That is, the discharge needles 412 of each two adjacent discharge modules 410 are staggered from each other, so that the gaps between the discharge needles 412 of each discharge module 410 can be filled. Accordingly, relatively uniform ion wind can be formed in the entire area of the expanded metal 411, and the entire amount of wind can be increased. Further, the projections of each group of three adjacent discharge needles formed by the discharge needles 412 of the plurality of discharge modules in the air outlet surface of the ion wind generating device all form an equilateral triangle, so as to ensure that the ion wind generated by the ion wind generating device is distributed more uniformly.
In some embodiments of the present invention, referring to fig. 7, each discharge module 410 further includes a housing 416, a conductive metal strip 413 having a plurality of conductive metal strips 414, and at least one PCB multi-layer board 415 electrically connected to the conductive metal strip 413 and perpendicular to the conductive metal strip 413. The PCB multi-layer board 415 has front and rear insulating protective layers and a conductive layer between the two insulating protective layers, and the conductive layer is electrically connected to the conductive metal sheet 414. The bottom wall of the housing 416 is opened with a buckle 4161, and the metal conductive sheet 414 of the metal conductive strip 413 is buckled in the buckle 4161 of the housing 416.
The number of PCB multi-layer boards 415 may be one, which is substantially rectangular; or the number of PCB multi-layer boards 415 may be plural, each PCB multi-layer board 415 having an elongated strip shape extending perpendicular to the metal conductive strips 413.
The plurality of discharge needles 412 are uniformly distributed on the outer side of the at least one PCB multi-layer board 415 facing the metal mesh 411. Specifically, each PCB multi-layer board 415 is provided with a plurality of pin holes on the outer surface thereof for mounting the discharge needles 412. The aperture of the pinhole is slightly smaller than the diameter of the discharge needle 412 so that the pinhole is in interference fit with the discharge needle 412. The filling layer filled by the welding process is arranged around the pin hole inserted into the discharge needle 412, that is, the filling layer filled by the welding process is arranged around the discharge needle 412 of the pin hole, so as to ensure that the discharge needle 412 is well electrically connected with the conductive layer in the PCB multi-layer board 415, and simultaneously, the conductive layer can be strictly prevented from being exposed to the outside, thereby avoiding the phenomena of random discharge or sparking.
It should also be understood by those skilled in the art that, unless otherwise specified, terms used to indicate orientation or positional relationship in the embodiments of the present invention such as "upper," "lower," "inner," "outer," "vertical," "horizontal," "front," "rear," and the like are based on the actual usage state of the air conditioning indoor unit 1, and these terms are only used for convenience of description and understanding of the technical solutions of the present invention, and do not indicate or imply that the devices or components referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore, should not be interpreted as limiting the present invention.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (8)
1. An indoor unit of an air conditioner, comprising:
the air conditioner comprises a shell, a fan and a control device, wherein the shell is provided with an air inlet positioned on the front side of the shell, a lower air outlet positioned on the lower part of the shell, and a first lateral air outlet and a second lateral air outlet which are respectively positioned on two sides of the shell and face the lateral front of the shell;
the heat exchange device is arranged in the shell and is configured to exchange heat with air flowing through the shell;
the fan assembly is arranged on the rear side of the heat exchange device, comprises two centrifugal fans which are arranged side by side along the transverse direction, and is configured to enable air subjected to heat exchange by the heat exchange device to flow towards the lower air outlet, the first lateral air outlet and the second lateral air outlet respectively;
the electric heating device is arranged between the heat exchange device and the fan assembly and comprises a heating cross beam and a heating frame, the heating cross beam is transversely arranged at the tops of the front sides of the two centrifugal fans along the air-conditioning indoor unit, the heating frame is arranged at the front sides of the centrifugal fans and surrounds air inlets of the centrifugal fans, the top of the heating frame is connected with the heating cross beam, and the electric heating device is configured to further heat air subjected to heat exchange through the heat exchange device so as to improve the heating effect of the air-conditioning indoor unit;
first ion wind generating device and second ion wind generating device set up respectively in the casing from the fan subassembly extremely on the flow path of first lateral air outlet and second lateral air outlet, and configure into through electric field force impel the air after the heat transfer device heat transfer respectively via the wind channel of fan subassembly towards first lateral air outlet and second lateral air outlet flow, first ion wind generating device and second ion wind generating device all include at least one discharge module, every discharge module all has the metal mesh and is located the metal mesh inboard and be a plurality of discharge needles that the array was arranged, every the needle point of discharge needle with the distance L of metal mesh sets up to make it satisfy: l = aL1, wherein a is any constant in the range of 0.7-1.3, L1 is the distance between the tips of the discharge needles and the metal mesh when the wind speed of the ionized wind at the wind speed central point of the metal mesh reaches the maximum wind speed Vmax, the wind speed central point of the metal mesh is the projection point of the tips of the discharge needles on the metal mesh, and the distance R between the tips of two adjacent discharge needles is set to satisfy the following conditions: r = aR1, wherein R1 is the distance between a wind speed measuring point with the wind speed reaching b times of the maximum wind speed Vmax and the wind speed central point, and b is any constant within the range of 0.3-0.7;
the first ion wind generating device and the second ion wind generating device respectively comprise a plurality of discharging modules which are sequentially arranged and connected in parallel or in series; and the discharge needles of two adjacent discharge modules are arranged in a straight-line opposite manner.
2. An indoor unit of an air conditioner according to claim 1,
the heating frame is formed by sequentially connecting 4 heating rods end to end.
3. An indoor unit of an air conditioner according to claim 2,
one of the connection end points of the heating frame is provided with a connecting rib, and the connecting rib is inserted into the heating beam to realize the fixed connection and the heat conduction between the heating beam and the heating frame.
4. An indoor unit of an air conditioner according to claim 2,
and vertical plates for fixedly supporting the heating cross beam are respectively arranged on two sides of the fan assembly.
5. An indoor unit of an air conditioner according to claim 1, further comprising:
the first air guide channel and the second air guide channel respectively extend to the first lateral air outlet and the second lateral air outlet from the inner portion of the machine shell in a bending mode, so that air flowing to the first lateral air outlet and the second lateral air outlet through the air channel of the fan assembly is guided.
6. An indoor unit of an air conditioner according to claim 5,
the cabinet includes a rear case for constituting a rear portion thereof and a front panel for constituting a front portion thereof, wherein
The front panel is configured to be pivotally connected to a front side of the rear housing in a front-to-rear direction about a bottom pivot axis extending transversely thereof to form an air inlet of the cabinet between the front panel and the rear housing when the front panel is controllably pivoted forward about the bottom pivot axis to an open position.
7. An indoor unit of an air conditioner according to claim 6, wherein the cabinet further includes:
the first side air duct and the second side air duct are respectively positioned at the two transverse ends between the rear shell and the front panel, and the first side air outlet and the second side air outlet are respectively formed at the outer side end openings of the first side air duct and the second side air duct; wherein
The first air guide channel and the second air guide channel are respectively formed inside the first side air guide cylinder and the second side air guide cylinder, and the first ion wind generating device and the second ion wind generating device are respectively positioned in the first air guide channel and the second air guide channel.
8. An indoor unit of an air conditioner according to claim 1,
the fan assembly and the first ion wind generating device and the second ion wind generating device are configured to be controlled to be alternatively started to operate, so that the indoor unit of the air conditioner works in a quick cooling/quick heating mode in which air is only driven to supply by the fan assembly or a silent mode in which air is only driven to supply by the first ion wind generating device and the second ion wind generating device; and is
The lower air outlet is provided with a movable air deflector which is configured to controllably open the lower air outlet in the rapid cooling/rapid heating mode and controllably close the lower air outlet in the silent mode.
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| CN107514742B (en) * | 2017-07-27 | 2021-04-20 | 青岛海尔空调器有限总公司 | Electric heating control method for partitioned air supply air conditioner and air conditioner |
| CN108332344B (en) * | 2017-07-27 | 2021-04-20 | 青岛海尔空调器有限总公司 | Control method for partitioned air supply air conditioner and air conditioner |
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| CN201302235Y (en) * | 2008-10-13 | 2009-09-02 | 山东朗进科技股份有限公司 | A military shelter air-conditioner indoor machine |
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Effective date of registration: 20200915 Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Co-patentee after: Qingdao Haier Parts Co., Ltd Patentee after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. |
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Effective date of registration: 20201105 Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Patentee after: Qingdao Haier Parts Co., Ltd Patentee after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Patentee before: Qingdao Haier Parts Co., Ltd |
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