CN107166521B - Indoor unit of air conditioner - Google Patents

Indoor unit of air conditioner Download PDF

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Publication number
CN107166521B
CN107166521B CN201710392631.6A CN201710392631A CN107166521B CN 107166521 B CN107166521 B CN 107166521B CN 201710392631 A CN201710392631 A CN 201710392631A CN 107166521 B CN107166521 B CN 107166521B
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China
Prior art keywords
purification
indoor unit
heat exchange
arc
air
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CN201710392631.6A
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Chinese (zh)
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CN107166521A (en
Inventor
张立智
刘丙磊
宁贻江
葛传双
***
孙川川
任克坤
耿建龙
管丽萍
王健
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Air Conditioner Gen Corp Ltd
Haier Smart Home Co Ltd
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Qingdao Haier Air Conditioner Gen Corp Ltd
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Priority to CN201710392631.6A priority Critical patent/CN107166521B/en
Publication of CN107166521A publication Critical patent/CN107166521A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007Indoor units, e.g. fan coil units
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/28Arrangement or mounting of filters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30Arrangement or mounting of heat-exchangers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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

Abstract

The invention provides an indoor unit of an air conditioner. This machine in air conditioning includes: the top of the shell is provided with an air inlet; a plurality of purification components and a driving device for respectively driving the purification components. Each purification assembly is configured to be driven by the driving device to switch between a purification position for shielding the air inlet and a non-purification position for moving out of the air inlet. The indoor unit of the air conditioner is provided with the plurality of purification components, and correspondingly, the plurality of driving devices are arranged to respectively drive the plurality of purification components to switch between the purification position and the non-purification position, so that the purification function can be started as required, and the service life of the purification components is prolonged.

Description

Indoor unit of air conditioner
Technical Field
The invention relates to the air conditioning technology, in particular to an air conditioner indoor unit with a purification function.
Background
Air conditioners (Air conditioners for short) are electrical appliances for supplying treated Air directly to an enclosed space or area, and in the prior art, Air conditioners are generally used to condition the temperature of a work environment. Along with the higher and higher requirement of people on the environment requirement comfort level, the function of the air conditioner is also richer and richer.
Due to the increasing demand for air cleanliness, some solutions for providing a purifying device in an air conditioner to purify a portion of air entering the air conditioner have appeared, however, these air conditioners with purifying function have the following problems: because only part of air can be purified, the purification effect is poor; in addition, since the purification apparatus operates for a long time, even if the air is in a very clean condition, it remains in operation, so that the service life of the purification apparatus is reduced and secondary pollution is also easily caused.
Disclosure of Invention
An object of the present invention is to provide an air conditioning indoor unit having a purification function with high flexibility.
A further object of the invention is to improve the stability of the movement of the purification module.
It is a further object of the present invention to improve the stability of the operation of the heat exchanger.
In particular, the present invention provides an indoor unit of an air conditioner, comprising:
the top of the housing is provided with an air inlet;
the air inlet is provided with a plurality of purification components and a driving device for respectively driving the purification components, and each purification component is configured to be driven by the driving device to switch between a purification position for shielding the air inlet and a non-purification position for moving out of the air inlet.
Optionally, the plurality of purification components are configured to be driven by the driving device to switch between a purification position and a non-purification position according to an air quality index of an indoor environment.
Optionally, the number of the purification assemblies and the number of the driving devices are both two; and is
The two driving devices are respectively arranged at the end parts of the two transverse sides of the housing;
the two purification components are respectively arranged to be connected with the two driving devices.
Optionally, the two purification assemblies are configured to:
when the air quality index is smaller than or equal to a first quality threshold value, the two purification assemblies are switched to non-purification positions;
when the air quality index is larger than the first quality threshold and smaller than or equal to a second quality threshold, any two purification assemblies are switched to purification positions;
when the air quality indicator is greater than the second quality threshold, both of the two purification assemblies are switched to a purification position; wherein
The first quality threshold is less than the second quality threshold.
Optionally, each of the driving devices comprises:
the gear and the arc-shaped rack are arranged to be meshed with the gear;
one end of the connecting rod is rotationally connected with the gear, and the other end of the connecting rod is rotationally connected with the purifying assembly so that the purifying assembly moves under the driving of the gear;
a guide rail assembly disposed at a lateral end of the housing to restrict a movement path of the arc-shaped rack and the purge assembly;
and an output shaft of the motor is arranged to be in driving connection with the gear to provide power for the gear to rotate.
Optionally, the rail assembly comprises:
a base disposed at a lateral end of the housing; and
the side cover is buckled on the surface of the base far away from the transverse end, and the side cover and the base define an arc-shaped guide groove matched with the arc-shaped rack and a placing position for placing the gear; wherein
An output shaft of the motor is arranged to penetrate through the base and is in driving connection with the gear so as to drive the arc-shaped rack to move along the extending direction of the arc-shaped guide groove;
the side cover is far away from the surface of the base and is provided with an arc-shaped guide rail so as to limit the movement path of the purification assembly.
Optionally, the purification assembly further comprises:
the purification module is used for purifying the airflow entering the indoor unit of the air conditioner;
one end of each mounting frame is respectively and rotatably connected with the connecting rods of the two driving devices, and the other end of each mounting frame is respectively matched with the arc-shaped guide rail; and is
Every first draw-in groove has all been seted up to the mounting bracket, two mounting brackets pass through first draw-in groove joint respectively in the tip of the horizontal both sides of purification module, in order to avoid purification module damages.
Optionally, the transverse middle part of the housing is provided with a supporting part consistent with the extending direction of the arc-shaped guide rail; and is
Every the mounting bracket of purifying component's the one side of keeping away from its corresponding drive arrangement is put on the supporting part to improve the stability that purifying component removed.
Optionally, the indoor unit of an air conditioner further includes:
an indoor unit heat exchanger disposed in the casing and configured to exchange heat with air flowing therethrough;
a faceplate disposed at a front portion of the enclosure, the non-purifying position being a position between the faceplate and the enclosure; wherein
The indoor unit heat exchanger is provided with a first heat exchange area and a second heat exchange area, a main pipeline, a first branch pipeline, a second branch pipeline and an electronic expansion valve, wherein the first heat exchange area is positioned below the air inlet, the second heat exchange area is positioned below the front side of the front edge of the air inlet, the main pipeline is used for guiding a refrigerant to flow in, the first branch pipeline and the second branch pipeline are used for conveying the refrigerant to the first heat exchange area and the second heat exchange area respectively, and the electronic expansion valve is; and is
The electronic expansion valve is arranged at the input end of the second shunting pipeline and is configured to increase the opening degree of the electronic expansion valve to a first opening degree when the two purification modules are controlled to move to the purification positions; when the two purification modules are controlled to move to the non-purification position, the electronic expansion valve reduces the opening degree of the electronic expansion valve to a second opening degree smaller than the first opening degree.
Optionally, a first temperature sensor and a second temperature sensor are respectively arranged on the outer surfaces of the first heat exchange area and the second heat exchange area to respectively detect a first surface temperature of the first heat exchange area and a second surface temperature of the second heat exchange area; and is
The electronic expansion valve is configured to increase or decrease a preset opening degree adjustment value when a difference between the first surface temperature and the second surface temperature is greater than a preset temperature difference.
The indoor unit of the air conditioner is provided with a plurality of purification components, and correspondingly, a plurality of driving devices are arranged to respectively drive the purification components to switch between a purification position and a non-purification position. In the purification mode, part or all of the purification components can be driven by the driving device to move to the shielding air inlet, so that the air flow entering the indoor unit of the air conditioner is purified, and the air quality of the surrounding environment is improved; in the non-purification mode, all the purification components can be driven by the driving device to move out of the air inlet to expose the air inlet, so that the air flow can directly enter the indoor unit of the air conditioner without passing through the purification components. Thereby can open purification performance as required, prolong the life who purifies the subassembly.
Furthermore, the driving device for driving the purification assembly comprises a gear, an arc-shaped rack, a guide rod, a guide rail assembly and a motor, the whole structure is ingenious in design, the occupied space is small, the device is particularly suitable for indoor units with narrow space, and the guide rail assembly and the motor provide a high-stability moving track and power for moving the purification assembly to or out of the air inlet.
Furthermore, the indoor unit of the air conditioner divides the heat exchanger of the indoor unit into two heat exchange areas, and adjusts the input quantity of the refrigerant in each heat exchange area according to the difference of the air quantity flowing through the heat exchange areas. Therefore, the air conditioner indoor unit is guaranteed to have high heat exchange efficiency, the phenomenon that local temperature difference of the heat exchanger is too large is avoided, the running stability of the heat exchanger of the indoor unit is enhanced, and better use experience is provided for users.
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 cross-sectional view of an air conditioning indoor unit according to an embodiment of the present invention;
fig. 2 is a schematic structural view of an indoor unit of an air conditioner according to an embodiment of the present invention, in which both of the purification assemblies are in a purification position;
fig. 3 is a schematic structural view of an indoor unit of an air conditioner according to another embodiment of the present invention, in which one of the purification assemblies is in a purification position and the other purification assembly is in a non-purification position;
fig. 4 is a schematic structural view of an indoor unit of an air conditioner according to still another embodiment of the present invention, in which two purification assemblies are in a non-purification position;
FIG. 5 is a schematic structural view of a driving apparatus according to an embodiment of the present invention;
FIG. 6 is a schematic block diagram of the drive of FIG. 5 with the side cover removed to show the gearing of the drive;
FIG. 7 is a schematic exploded view of the drive arrangement of FIG. 5;
fig. 8 is a sectional view of an air conditioning indoor unit according to an embodiment of the present invention;
fig. 9 is a schematic structural view of an indoor unit heat exchanger according to an embodiment of the present invention.
Detailed Description
Fig. 1 is a schematic cross-sectional view of an air conditioning indoor unit 100 according to one embodiment of the present invention. Referring to fig. 1, the indoor unit 100 of the air conditioner may include a cabinet, an indoor unit heat exchanger 160 disposed in the cabinet, and an indoor unit fan 170 disposed below the indoor unit heat exchanger 160. Specifically, the cabinet may include a frame 110 for supporting the indoor unit fan 170 and the indoor unit heat exchanger 160, a casing 120 covering the frame 110, a panel 130 connected to a front side of the casing 120 for constituting a front portion of the cabinet, and left and right end covers disposed at both sides of the cabinet, respectively. The housing 120 has an air inlet 121 at its top and an air outlet at its bottom. An air inlet grille may be disposed at the air inlet 121, and indoor air enters the indoor unit 100 through the air inlet grille. The indoor unit heat exchanger 160 may be configured to exchange heat with air flowing therethrough to change the temperature of the air flowing therethrough into heat-exchanged air. The indoor fan 170 may be configured to cause a part of the indoor air (air of the ambient environment where the indoor unit 100 is located) entering from the air inlet 121 to flow toward the indoor heat exchanger 160, and cause the heat-exchanged air heat-exchanged by the indoor heat exchanger 160 to flow toward the air outlet via the indoor fan 170.
In particular, the indoor unit 100 may further include a driving device 140 for driving the plurality of cleaning assemblies 150 by the plurality of cleaning assemblies 150, respectively. Each of the cleaning assemblies 150 is configured to be driven by the driving device 140 to switch between a cleaning position covering the air inlet 121 and a non-cleaning position moving out of the air inlet 121. In the present invention, the number of the purification assembly 150 and the driving device 140 may be two, three, or more than three, etc. In some embodiments, the purge assembly 150 may completely shield the intake vent 121 when in the purge position. The non-purging position may be a position between the panel 130 and the enclosure 120. In other embodiments, the non-purging position may be a position of the rear side of the skeleton 110.
The indoor unit 100 of the air conditioner of the present invention has a plurality of purification modules 150, and a plurality of driving devices 140 are correspondingly provided to drive the purification modules 150 to switch between a purification position and a non-purification position. In the purification mode, part or all of the purification assemblies 150 can be driven by the driving device 140 to move to cover the air inlet 121, so as to purify the air flow entering the indoor unit 100 of the air conditioner and improve the air quality of the surrounding environment; in the non-cleaning mode, all of the cleaning assemblies 150 can be moved out of the air inlet 121 by the driving device 140 to expose the air inlet 121, so that the airflow can directly enter the indoor unit 100 without passing through the cleaning assemblies 150. Thereby, the purification function can be turned on as needed, and the service life of the purification assembly 150 is prolonged.
In some embodiments, the air conditioning indoor unit 100 may further include a detection module (not shown). The detection module may be configured to detect an air quality indicator of the ambient environment. The plurality of purification components 150 may be configured to be driven by the driving device 140 to switch between the purification position and the non-purification position based on an air quality indicator of the indoor environment. In some preferred embodiments, the number of purge assemblies 150 and drive devices 140 is two. The two driving devices 140 may be respectively disposed at ends of both lateral sides of the cover case 120. Two purge assemblies 150 may be respectively provided in connection with the two driving devices 140.
Fig. 2 is a schematic structural view of an air conditioning indoor unit 100 according to an embodiment of the present invention, in which two purification assemblies 150 are in purification positions; fig. 3 is a schematic structural view of an air conditioning indoor unit 100 according to another embodiment of the present invention, in which one of the purification assemblies 150 is in a purification position and the other purification assembly 150 is in a non-purification position; fig. 4 is a schematic structural view of an air conditioning indoor unit 100 according to still another embodiment of the present invention, in which two of the purification assemblies 150 are in a non-purification position. Referring to fig. 2-4, specifically, the two purification assemblies 150 may be configured such that when the air quality indicator is less than or equal to a first quality threshold, both purification assemblies 150 are switched to non-cleanPosition is changed; when the air quality index is greater than the first quality threshold and less than or equal to a second quality threshold, any two of the purification assemblies 150 are switched to the purification position; when the air quality indicator is greater than the second quality threshold, both of the purge assemblies 150 are switched to the purge position. Wherein the first quality threshold is less than the second quality threshold. Taking PM2.5 as an example, the first mass threshold value can be 0-35 μ g/m3E.g. 0. mu.g/m3、10μg/m3、25μg/m3Or 35. mu.g/m3(ii) a The second mass threshold value can be 35-75 mu g/m3For example 35. mu.g/m3、55μg/m3Or 75. mu.g/m3
FIG. 5 is a schematic block diagram of a drive device 140 according to one embodiment of the present invention; FIG. 6 is a schematic block diagram of the drive 140 of FIG. 5 with the side cover 147 removed to illustrate the gearing of the drive 140; fig. 7 is a schematic exploded view of the driving device 140 of fig. 5. Referring to fig. 5 to 7, in particular, in some preferred embodiments, each driving device 140 may include: a gear 142 and an arc-shaped rack 143, a link 145, a rail assembly, and a motor 141. The arc-shaped rack 143 may be configured to be engaged with the gear 142, and the connecting rod 145 may have a first end configured to be rotatably connected to the arc-shaped rack 143 and a second end configured to be rotatably connected to the purifying assembly 150, so that the purifying assembly 150 moves under the driving of the gear 142 and the driving of the connecting rod 145. The rail assembly may be fixed to the lateral end of the housing 120 to limit the movement path of the arc-shaped rack 143 and the purification assembly 150. An output shaft of motor 141 may be disposed in driving communication with gear 142 to power rotation of gear 142. The motor 141 may be configured to output two opposite driving forces to drive the purge assembly 150 to switch between the purge position and the non-purge position.
In some preferred embodiments, the rail assembly may include a base 146 and a side cover 147. The base 146 may be disposed at a lateral end of the cover case 120. The side cover 147 may be snapped to a surface of the base 146 remote from the lateral end where the base 146 is disposed, and the side cover 147 and the base 146 define an arcuate guide slot 146-1 for mating with the arcuate rack 143 and a placement location for placing the gear 142. The link 145 may be disposed in the arc-shaped guide groove 146-1. In the illustrated embodiment, the rest position is disposed below the arcuate guide slot 146-1. In other embodiments, the placement locations may be disposed above the arcuate guide slots 146-1. An output shaft of the motor 141 may be disposed to be drivingly connected to the gear 142 through the base 146 to drive the arc-shaped rack 143 to move along the extending direction of the arc-shaped guide groove 146-1.
The surface of the side cover 147 remote from the base 146 may be formed with an arcuate guide 147-1 to limit the path of movement of the purge assembly 150. The arcuate guide 147-1 can be configured to communicate with the arcuate guide 146-1 to facilitate the rotational coupling of the linkage 145 to the purification assembly 150. Specifically, the arcuate guide 147-1 may include a first arcuate section 147-1-1 and a second arcuate section 147-1-2 connected to the first arcuate section 147-1-1, the first arcuate section 147-1-1 and the second arcuate section 147-1-2 have different curvatures, that is, the first arcuate section 147-1-1 and the second arcuate section 147-1-2 have different degrees of curvature, thereby forming an irregularly shaped arcuate guide 147-1, the first arcuate section 147-1-1 may be located at a position where a rim of a lateral side end of the casing 120 corresponds to the air inlet 121, and the second arcuate section 147-1-2 extends forward and downward to an inner side of the panel 130. The arcuate guide slot 146-1 may also extend to the inside of the panel 130 and the second arcuate segment 147-1-2 may be located outside of the arcuate guide slot 146-1, i.e., the second arcuate segment 147-1-2 is closer to the panel 130 than the arcuate guide slot 146-1 is located.
The motor 141 drives the arc-shaped rack 143 to slide along the arc-shaped guide groove 146-1 through the gear 142, the connecting rod 145 slides along the arc-shaped rack 143 during the sliding process of the arc-shaped rack 143, and generates relative rotation with the arc-shaped rack 143, and the purification assembly 150 is driven by the connecting rod 145 and moves along the arc-shaped guide rail 147-1 with an irregular shape, thereby enabling the purification assembly 150 to be switched between the purification position and the non-purification position.
Fig. 8 is a sectional view of an air conditioning indoor unit 100 according to an embodiment of the present invention. Referring to fig. 8, in order to facilitate clear and intuitive understanding of the scheme of using the arc-shaped rack 143 to drive the cleaning assembly 150 and using the arc-shaped guide rail 147-1 with a regular shape to provide a sliding track for the cleaning assembly 150, and the scheme of using the arc-shaped rack 143 to drive the cleaning assembly 150 to move in cooperation with the arc-shaped guide rail 147-1 with an irregular shape through the connecting rod 145, a in fig. 8 is a path of the arc-shaped guide rail 147-1 with an irregular shape formed by connecting a first arc-shaped section 147-1-1 and a second arc-shaped section 147-1-2 with a different arc from the first arc-shaped section 147-1-1, and B is a path of the arc-shaped guide rail 147-1 with a regular shape, and the guide rail with an irregular shape is located at the.
Compared with the scheme that the purification assembly 150 is directly driven by the arc-shaped rack 143 and the arc-shaped guide rail 147-1 is adopted to provide a sliding track for the purification assembly 150, the space occupied by the connection rod 145 for driving the purification assembly 150 to move in cooperation with the arc-shaped guide rail 147-1 with an irregular shape is smaller, the internal space of the indoor unit 100 can be saved, the size of the indoor unit 100 does not need to be increased, and enough space can be provided for the arrangement of the indoor unit heat exchanger 160, the indoor unit fan 170 and other components while the driving device 140 and the purification assembly 150 are arranged.
In some embodiments, the base 146 may have an escape hole penetrating through the base 146 and extending in a lateral direction of the indoor unit 100, and the output shaft of the motor 141 may be disposed to be drivingly connected to the gear 142 through the escape hole. The base 146 may be secured to the lateral end of the housing 120 by a threaded connection, welding, snap fit, or the like. The motor 141 may be mounted on the base 146. In some embodiments, the motor 141 may be mounted to the base 146 via threaded fasteners to facilitate installation and maintenance of the motor 141. The base 146 may have a screw hole extending in a lateral direction of the indoor unit 100, the motor 141 may be provided with a lug having a mounting hole, and a screw fastener may be provided to be screwed with the screw hole of the base 146 through the screw hole of the motor 141 to fix the motor 141 to the base 146. The threaded hole is preferably provided at the periphery of the relief hole.
The clearance hole of the base 146 may be matched with the placement position of the side cover 147 to form a space for accommodating the gear 142. The top surface of the base 146 may be provided with a catch 146-2, and the top surface of the side cover 147 may be provided with a catch groove 147-2 that mates with the catch 146-2 to snap the side cover 147 onto the base 146 and facilitate disassembly and maintenance of the various components of the rail assembly. The base 146 may further have positioning columns 146-3 extending in the lateral direction of the indoor unit 100 toward the side covers 147, the side covers 147 may further have positioning holes 147-3 extending in the lateral direction of the indoor unit 100 toward the base 146, and the positioning holes 147-3 are provided to be fitted with the positioning columns 146-3 to facilitate positioning and installation of the side covers 147.
The surface of the base 146 facing the side cover 147 may be formed with an arc-shaped groove, and a side of the arc-shaped rack 143 adjacent to the base 146 may be further formed with a plurality of rollers 144. In the present invention, the number of the rollers 144 may be two, three, or more than three. The plurality of rollers 144 may be disposed in the arc groove and roll in the arc groove along with the movement of the arc rack 143 to guide the moving direction of the arc rack 143, so as to improve the stability of the arc rack 143 moving along the arc guide groove 146-1, thereby improving the stability of the movement of the purification assembly 150.
In some embodiments, the purification assembly 150 can include a purification module 151 and two mounting brackets 152. The purification module 151 is used to purify an air flow entering the indoor unit 100 of the air conditioner. One end of each mounting bracket 152 is configured to be rotatably coupled to the connecting rods 145 of the two driving devices 140, respectively, and the other end is configured to be slidably coupled to the arc-shaped guide rails 147-1, respectively. First clamping grooves can be formed in each mounting frame 152, and the two mounting frames 152 can be clamped to the end portions of the two transverse sides of the purification module 151 through the first clamping grooves respectively, so that the purification module 151 is convenient to clean, and the purification module 151 can be prevented from being damaged due to the fact that the purification assembly 150 is directly fixedly connected with the connecting rod 145.
In some preferred embodiments, the purification module 151 may include an electrostatic adsorption submodule, a plasma purification submodule, an anion generation submodule, a ceramic activated carbon submodule, and the like, which are sequentially arranged from outside to inside, and the electrostatic adsorption submodule, the plasma purification submodule, the anion generation submodule, and the ceramic activated carbon submodule may be arc-shaped. The first locking groove of the mounting bracket 152 may be configured to match the shape of the purification module 151, so as to facilitate the installation of the purification module 151. The size of the purification module 151 may be determined according to the size of the air inlet 121 and the inner space of the indoor unit 100.
The lateral middle portion of the housing 120 may have a support portion in correspondence with the extending direction of the arc-shaped guide 147-1. The mounting bracket 152 of each purification assembly 150 on the side away from its corresponding drive device 140 can be placed on a support to improve the stability of the movement of the purification assembly 150.
In the embodiment where the non-purging position is a position between the panel 130 and the casing 120, the purging assembly 150 is at a relatively close vertical distance from the surface of the indoor unit heat exchanger 160 when the purging assembly 150 is moved within the casing. Therefore, when the cleaning assembly 150 moves to block a part of the indoor unit heat exchanger 160, a relatively large wind resistance is generated in the local area, which affects the heat exchange efficiency of the local area. Therefore, the indoor heat exchanger 160 generates local temperature difference, and is easy to have the problems of condensation or freezing and the like, so that the heat exchange capability of the indoor heat exchanger is weakened.
Prior to the present invention, it was common for those skilled in the art to reduce the overall frequency of the indoor heat exchanger 160 to smooth out the problem of uneven heat exchange efficiency. However, this is at the expense of the cooling capacity of the indoor unit 100, which seriously affects the use effect of the user. The invention creatively divides the indoor heat exchanger 160 into two heat exchange areas and adjusts the input quantity of the refrigerant in each heat exchange area according to the difference of the air quantity flowing through the two heat exchange areas. Therefore, the integral indoor unit 100 has high heat exchange efficiency, the phenomenon that the local temperature difference of the indoor unit heat exchanger 160 is too large is avoided, the running stability of the indoor unit heat exchanger 160 is enhanced, and better use experience is provided for users.
In some embodiments, the indoor unit heat exchanger 160 may have a first heat exchange area and a second heat exchange area respectively located below the air inlet 121 and below a front side of a front edge of the air inlet 121, a main pipe 162 for guiding inflow of the refrigerant, and a first and a second branch pipes 163 and 164 for respectively delivering the refrigerant to the first and the second heat exchange areas, and an electronic expansion valve 161. Fig. 9 is a schematic structural view of an indoor unit heat exchanger 160 according to an embodiment of the present invention. Referring to fig. 9, in the illustrated embodiment, the indoor unit heat exchanger 160 may include a first heat exchange section 165 horizontally disposed below the air intake 121, a second heat exchange section 166 extending from a front end of the first heat exchange section 165 to a lower side of the front side, and a third heat exchange section 167 vertically extending downward from a lower end of the second heat exchange section 166. Both the first and second diversion lines 163, 164 are configured to be connected from the second heat exchange section 166 to the first and third heat exchange sections 165, 167, respectively, i.e. the first heat exchange area is constituted by the first heat exchange section 165 and part of the second heat exchange section 166, and the second heat exchange area is constituted by the third heat exchange section 167 and part of the second heat exchange section 166. When the purification assembly 150 is in the purification mode, the purification assembly 150 moves to the upstream of the air intake path of the first heat exchange area; when the purification assembly 150 is in the non-purification mode, the purification assembly 150 moves upstream of the intake air path of the second heat exchange area.
In some preferred embodiments, since the first heat exchange area under the air inlet 121 is more likely to contact more ambient air than the second heat exchange area at the front side of the interior of the casing, and the heat exchange efficiency is relatively high, the electronic expansion valve 161 is preferably disposed at the input end of the second branch pipeline 164 for delivering the refrigerant to the second heat exchange area, so as to pre-limit the input amount of the refrigerant entering the second heat exchange area, and to prevent or properly limit the imbalance of the heat exchange effect that may be generated by the indoor unit heat exchanger 160.
Specifically, the electronic expansion valve 161 may be configured such that when both purge modules 151 are controlled to move to the purge position, the electronic expansion valve 161 increases its opening degree to a first opening degree; when both purge modules 151 are controlled to move to the non-purge position, the electronic expansion valve 161 reduces its opening degree to a second opening degree smaller than the first opening degree. That is, when both of the two purification modules 151 are in the purification mode, the airflow flowing through the first heat exchange area is reduced due to the wind resistance, so that the heat exchange amount of the refrigerant in the first heat exchange area is reduced. At this time, the opening degree of the electronic expansion valve 161 is increased, so that the refrigerant flowing into the second heat exchange area is increased, and the refrigerant flowing into the first heat exchange area is reduced; when both of the two purification modules 151 are in the non-purification mode, the airflow flowing through the second heat exchange area is reduced due to the wind resistance, so that the heat exchange amount of the refrigerant in the second heat exchange area is reduced. At this time, the opening degree of the electronic expansion valve 161 is decreased, so that the refrigerant flowing into the second heat exchange region is decreased, and the refrigerant flowing into the first heat exchange region is increased. Therefore, the heat exchange pressure and the heat exchange efficiency of the first heat exchange area and the second heat exchange area are adaptive to the air volume flowing through the first heat exchange area and the second heat exchange area, and the heat exchange effects of the first heat exchange area and the second heat exchange area are balanced. In this embodiment, specific values of the first opening degree and the second opening degree may be set according to an actual use condition of the indoor unit 100. In some preferred embodiments, the first opening degree may be any opening degree between 70% and 80%, such as 70%, 75%, or 80%. The second opening degree may be any opening degree between 15% and 50%, for example, 15%, 25%, 40%, or 50%.
In a further preferred embodiment, a first temperature sensor and a second temperature sensor are respectively arranged on the outer surfaces of the first heat exchange area and the second heat exchange area to respectively detect the first surface temperature of the first heat exchange area and the second surface temperature of the second heat exchange area. The electronic expansion valve 161 may be configured to increase or decrease its opening degree by a third opening degree when the difference between the first surface temperature and the second surface temperature is greater than a preset temperature difference. In the present embodiment, the temperature difference between the first surface temperature and the second surface temperature may be further set according to the performance of the indoor unit heat exchanger 160, the operating state of the indoor unit 100, and the like. In some preferred embodiments, the temperature difference may be any temperature value between 0.5 ℃ and 2 ℃, such as 0.5 ℃, 1 ℃, 1.5 ℃, 2 ℃, and the like. The third opening degree may be any value between 1% and 10%. For example, it may be 1%, 4%, 7%, 10%, or the like.
In the case where the difference between the first surface temperature and the second surface temperature is greater than the temperature difference, the electronic expansion valve 161 is configured such that when the first surface temperature is less than the second surface temperature, the electronic expansion valve 161 increases the opening value; when the first surface temperature is greater than the second surface temperature, the electronic expansion valve 161 decreases the opening value. That is, after the opening degree of the electronic expansion valve 161 is primarily adjusted according to the moving position of the purification assembly 150, in the operation process of the indoor unit heat exchanger 160, the heat exchange effect of the first heat exchange area and the second heat exchange area may be slightly different due to the influence of factors such as the surrounding environment of the indoor unit 100, and thus the surface temperature of the indoor unit heat exchanger 160 is unbalanced. At this time, the opening degree of the electronic expansion valve 161 is adjusted to a small extent according to the surface temperature difference of each heat exchange area of the indoor heat exchanger 160, so that the input amount of the cooling medium in the indoor heat exchanger 160 can be regulated in real time, and the local temperature difference on the indoor heat exchanger 160 can be rapidly eliminated.
The air conditioner to which the indoor unit 100 of the present invention is applied further includes a refrigeration system, a pipe temperature sensor, and a controller. The controller can control the driving device 140 and the indoor unit fan 170, the compressor and the throttling device in the refrigeration system correspondingly. The tube temperature sensor is disposed at the indoor unit heat exchanger 160, and is configured to measure a temperature of a refrigerant pipeline of the indoor unit heat exchanger 160. In this embodiment, the compressor is an inverter compressor, and the throttle device is an electronic expansion valve 161 with an adjustable opening degree.
Because the two purification assemblies 150 are both in the purification position and the non-purification position, the air resistance of the air flow generated by the indoor unit fan 170 is obviously different, after the purification assembly enters the purification mode, the air flow is filtered, the heat exchange effect of the air flow passing through the indoor unit heat exchanger 160 is inevitably attenuated, the high load problem is easy to occur, and the corresponding control can be performed according to the operation mode of the air conditioner, so that the influence of the normal refrigeration or heating function of the air conditioner is reduced when the air conditioner is purified.
In some embodiments, after both of the purification assemblies 150 enter the purification mode, a target tube temperature of the heat exchanger tube temperature of the indoor unit 100 may be set, and the heat exchanger tube temperature of the indoor unit 100 is detected in real time, and the refrigeration system of the air conditioner is feedback controlled according to the temperature difference between the detected tube temperature and the target tube temperature.
Specifically, when the air conditioner operates in a cooling mode, if the temperature of the heat exchanger tube is lower than the target tube temperature and does not exceed the first temperature difference threshold after the two purification assemblies 150 both enter the purification mode, the feedback control can be performed on the indoor unit fan 170 according to the difference, and the lower the temperature of the heat exchanger tube is, the faster the fan rotation speed of the indoor unit 100 is. If the increase of the rotating speed of the indoor unit fan 170 cannot ensure that the temperature difference between the heat exchanger tube temperature and the target tube temperature is within the first temperature difference threshold, the opening degree of the throttling device of the compression refrigeration cycle is increased. If the temperature of the heat exchanger tube can not be guaranteed to be maintained within the second temperature difference threshold value with the target tube temperature, the frequency of the compressor is reduced, and therefore the situation that the temperature of the indoor unit heat exchanger 160 is too low and high load occurs is avoided.
When the air conditioner is in heating operation, if the temperature of the heat exchanger tube is higher than the target tube temperature and does not exceed the first temperature difference threshold after the two purification assemblies 150 enter the purification mode, the feedback control can be performed on the fan of the indoor unit 100 according to the difference, and the higher the temperature of the heat exchanger tube is, the faster the fan rotating speed of the indoor unit 100 is. If the increase of the rotating speed of the indoor unit fan 170 cannot ensure that the temperature difference between the heat exchanger tube temperature and the target tube temperature is within the first temperature difference threshold, the opening degree of the throttling device of the compression refrigeration cycle is increased. If the temperature difference between the heat exchanger tube temperature and the target tube temperature is not guaranteed to be within the second temperature difference threshold, the frequency of the compressor is reduced, and therefore the high load caused by the overhigh temperature of the indoor unit heat exchanger 160 is prevented.
The first temperature difference threshold and the second temperature difference threshold may be configured according to the specification and the use requirement of the indoor unit heat exchanger 160, for example, the first temperature difference threshold is set to plus or minus 3 degrees celsius, and the second temperature difference threshold is set to plus or minus 5 degrees celsius.
According to the invention, after the two purification assemblies 150 enter the purification mode, the target pipe temperature in the purification mode is set according to the pipe temperature of the heat exchanger of the indoor unit 100 when the purification mode is entered, and the feedback control is carried out on the refrigeration system of the air conditioner, so that the problems of abnormal load and high load of the refrigeration system caused by the reduction of the air volume can be avoided.
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 top of the housing is provided with an air inlet;
the two driving devices are respectively arranged at the end parts of the two transverse sides of the housing, and the two purification components are respectively arranged to be connected with the two driving devices so as to be driven by the driving devices to switch between a purification position for shielding the air inlet and a non-purification position for moving out of the air inlet;
an indoor unit heat exchanger disposed in the casing and configured to exchange heat with air flowing therethrough; and
a faceplate disposed at a front portion of the enclosure, the non-purifying position being a position between the faceplate and the enclosure; wherein
The indoor unit heat exchanger is provided with a first heat exchange area and a second heat exchange area, a main pipeline, a first branch pipeline, a second branch pipeline and an electronic expansion valve, wherein the first heat exchange area is positioned below the air inlet, the second heat exchange area is positioned below the front side of the front edge of the air inlet, the main pipeline is used for guiding a refrigerant to flow in, the first branch pipeline and the second branch pipeline are used for conveying the refrigerant to the first heat exchange area and the second heat exchange area respectively, and the electronic expansion valve is; and is
The electronic expansion valve is arranged at the input end of the second shunting pipeline and is configured to increase the opening degree of the electronic expansion valve to a first opening degree when the two purification modules are controlled to move to the purification positions; when the two purification modules are controlled to move to the non-purification position, the electronic expansion valve reduces the opening degree of the electronic expansion valve to a second opening degree smaller than the first opening degree.
2. The indoor unit of air conditioner according to claim 1, wherein
The two purification assemblies are configured to be driven by the driving device to switch between a purification position and a non-purification position according to the air quality index of the indoor environment.
3. The air conditioning indoor unit of claim 1, wherein the two purge assemblies are configured to:
when the air quality index is smaller than or equal to a first quality threshold value, the two purification assemblies are switched to non-purification positions;
when the air quality index is larger than the first quality threshold and smaller than or equal to a second quality threshold, any two purification assemblies are switched to purification positions;
when the air quality indicator is greater than the second quality threshold, both of the two purification assemblies are switched to a purification position; wherein
The first quality threshold is less than the second quality threshold.
4. The indoor unit of claim 1, wherein each of the driving means comprises:
the gear and the arc-shaped rack are arranged to be meshed with the gear;
one end of the connecting rod is rotationally connected with the gear, and the other end of the connecting rod is rotationally connected with the purifying assembly so that the purifying assembly moves under the driving of the gear;
a guide rail assembly disposed at a lateral end of the housing to restrict a movement path of the arc-shaped rack and the purge assembly;
and an output shaft of the motor is arranged to be in driving connection with the gear to provide power for the gear to rotate.
5. The indoor unit of claim 4, wherein the rail assembly comprises:
a base disposed at a lateral end of the housing; and
the side cover is buckled on the surface of the base far away from the transverse end, and the side cover and the base define an arc-shaped guide groove matched with the arc-shaped rack and a placing position for placing the gear; wherein
An output shaft of the motor is arranged to penetrate through the base and is in driving connection with the gear so as to drive the arc-shaped rack to move along the extending direction of the arc-shaped guide groove;
the side cover is far away from the surface of the base and is provided with an arc-shaped guide rail so as to limit the movement path of the purification assembly.
6. The indoor unit of claim 4, wherein the purification assembly further comprises:
the purification module is used for purifying the airflow entering the indoor unit of the air conditioner;
one end of each mounting frame is respectively and rotatably connected with the connecting rods of the two driving devices, and the other end of each mounting frame is respectively matched with the arc-shaped guide rail; and is
Every first draw-in groove has all been seted up to the mounting bracket, two mounting brackets pass through first draw-in groove joint respectively in the tip of the horizontal both sides of purification module, in order to avoid purification module damages.
7. The indoor unit of air conditioner according to claim 6, wherein
The transverse middle part of the housing is provided with a supporting part consistent with the extending direction of the arc-shaped guide rail; and is
Every the mounting bracket of purifying component's the one side of keeping away from its corresponding drive arrangement is put on the supporting part to improve the stability that purifying component removed.
8. The indoor unit of air conditioner according to claim 1, wherein
The outer surfaces of the first heat exchange area and the second heat exchange area are respectively provided with a first temperature sensor and a second temperature sensor so as to respectively detect the first surface temperature of the first heat exchange area and the second surface temperature of the second heat exchange area; and is
The electronic expansion valve is configured to increase or decrease a preset opening degree adjustment value when a difference between the first surface temperature and the second surface temperature is greater than a preset temperature difference.
CN201710392631.6A 2017-05-27 2017-05-27 Indoor unit of air conditioner Active CN107166521B (en)

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Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China

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