CN107289523B

CN107289523B - Indoor unit of air conditioner

Info

Publication number: CN107289523B
Application number: CN201710491091.7A
Authority: CN
Inventors: 宁贻江; 孙川川; 葛传双; 孙龙; 耿建龙; 赵业才; 王涛; 李宗攀; 徐雪尉; 管丽萍; 王健
Original assignee: Qingdao Haier Air Conditioner Gen Corp Ltd
Current assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Haier Smart Home Co Ltd
Priority date: 2017-06-23
Filing date: 2017-06-23
Publication date: 2020-09-25
Anticipated expiration: 2037-06-23
Also published as: CN107289523A

Abstract

The invention provides an indoor unit of an air conditioner. This machine in air conditioning includes: the casing comprises a framework for supporting the fan of the indoor unit and the heat exchanger of the indoor unit, and a housing which is covered on the framework and is provided with an air inlet and an air outlet; the humidifying pipe is arranged at the air outlet and is used for communicating with a humidifier for supplying gaseous water mist. And the peripheral wall of the humidifying pipe is provided with a plurality of humidifying holes so as to emit the gaseous water mist to the air outlet, thereby bringing the air outlet of the indoor unit of the air conditioner to the surrounding environment. The humidifying pipe is arranged at the air outlet of the indoor unit of the air conditioner, the peripheral wall of the humidifying pipe is provided with the plurality of humidifying holes, and the humidifying pipe can emit gaseous water mist to the air outlet and uniformly blow the gaseous water mist to the indoor environment under the blowing action of the fan of the indoor unit, so that the comfort level of a user is improved, and the probability of allergy, asthma and immune system diseases is reduced.

Description

Indoor unit of air conditioner

Technical Field

The invention relates to the field of air conditioning, in particular to an air conditioner indoor unit with a humidifying 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.

The air conditioner is usually switched to a heating mode in winter, and is dry indoors, so that the comfort of a user is reduced, and allergy, asthma and immune system diseases are easily caused. Therefore, the first air conditioning indoor unit having a humidifying function is required in design.

Disclosure of Invention

One object of the present invention is to provide an indoor unit of an air conditioner having a humidifying function.

A further object of the present invention is to improve the uniformity of humidification.

It is another further object of the present invention to improve the air quality of the indoor environment.

In particular, the present invention provides an indoor unit of an air conditioner, comprising:

the casing comprises a framework for supporting the fan of the indoor unit and the heat exchanger of the indoor unit, and a housing which is covered on the framework and is provided with an air inlet and an air outlet;

the humidifying pipe is arranged at the air outlet and is used for communicating a humidifier for supplying gaseous water mist; and is

The peripheral wall of the humidifying pipe is provided with a plurality of humidifying holes so as to emit gaseous water mist to the air outlet, and therefore the air outlet of the indoor unit of the air conditioner is brought to the surrounding environment.

Optionally, the humidifying pipe is arranged to extend along a transverse direction of the air conditioning indoor unit; and is

The plurality of humidifying holes are uniformly distributed on the surface of the humidifying pipe deviating from the indoor unit fan, so that the humidifying uniformity is improved.

Optionally, the humidifying pipe is fixed on the skeleton to improve the stability of the humidifying pipe.

Optionally, the humidifier is an ultrasonic humidifier.

Optionally, the humidifier is arranged outside the indoor unit of the air conditioner; and is

The humidifying pipe is disposed to pass through the cabinet to communicate with the humidifier.

Optionally, the indoor unit of an air conditioner further includes:

the device comprises a purification assembly and at least one driving device, wherein the at least one driving device is partially connected with the purification assembly to drive the purification assembly to move; and is

The purification assembly is 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 purification assembly is configured to:

when the air quality index of the surrounding environment is larger than or equal to a preset quality threshold value and/or the humidifying pipe emits gaseous water mist, switching to the purification position;

and when the air quality index is lower than the preset quality threshold and the time for stopping the humidifying pipe from emitting the gaseous water mist is greater than or equal to a preset time threshold, switching to the non-purification position.

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;

the motor is arranged on the housing, and an output shaft of the motor is in driving connection with the gear to provide power for the rotation of the gear.

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 comprises:

the purification module is used for purifying the airflow entering the indoor unit of the air conditioner;

one end of the mounting rack is respectively and rotatably connected with the connecting rod of the at least one driving device, and the other end of the mounting rack is respectively matched with the arc-shaped guide rail; and is

First draw-in groove has been seted up to the mounting bracket, first draw-in groove set up to with the horizontal tip joint of purification module is in order to avoid the purification module damages.

The humidifying pipe is arranged at the air outlet of the indoor unit of the air conditioner, the peripheral wall of the humidifying pipe is provided with the plurality of humidifying holes, and the humidifying pipe can emit gaseous water mist to the air outlet and uniformly blow the gaseous water mist to the indoor environment under the blowing action of the fan of the indoor unit, so that the comfort level of a user is improved, and the probability of allergy, asthma and immune system diseases is reduced.

Furthermore, the humidifying pipe extends along the transverse direction of the indoor unit of the air conditioner, and the plurality of humidifying holes are uniformly distributed on the indoor unit fan of the humidifying pipe, which is away from the air outlet, so that the air outlet range of the humidifier is enlarged, and the humidifying uniformity is improved.

Further, the inventor of the present application creatively recognizes that the gaseous water mist emitted from the humidifying pipe can damp the interior of the air-conditioning indoor unit, and the indoor air containing particulate matters enters the interior of the air-conditioning indoor unit, so that the indoor air is easily attached to the surfaces of various components and bacteria are easily bred. Particularly, the indoor unit of the air conditioner is provided with the purification assembly, so that the content of particles entering the indoor unit of the air conditioner can be reduced, bacteria bred in the indoor unit of the air conditioner can be reduced, the content of bacteria in heat exchange air and gaseous water mist blown out by a fan of the indoor unit can be reduced, and the air quality of an indoor environment can be ensured. Furthermore, the purification component can be switched between a purification position for shielding the air inlet and a non-purification position for moving out of the air inlet under the driving of the driving device, and when the purification component is at the purification position, the purification component can be moved to the position for shielding the air inlet under the driving of the driving device, so that the air flow entering the indoor unit is purified, and the air quality of the surrounding environment is improved; when the air inlet is not in the purification position, the purification component can be driven by the driving device to move out of the air inlet so as to expose the air inlet, and therefore air flow can directly enter the indoor unit without passing through the purification component. Thereby can open the purification performance as required, reduce the clean or change frequency of purification subassembly.

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;

fig. 3 is a schematic structural view of an indoor unit of an air conditioner according to an embodiment of the present invention, in which a purification assembly is in a purification position;

fig. 4 is a schematic structural view of an indoor unit of an air conditioner according to an embodiment of the present invention, in which a purification assembly is in a non-purification position;

FIG. 5 is a schematic block diagram of a drive device and purge assembly according to one embodiment of the invention;

FIG. 6 is a schematic structural view of the driving apparatus in FIG. 5;

FIG. 7 is a schematic block diagram of the drive of FIG. 5 with the side cover removed to show the gearing of the drive;

FIG. 8 is a schematic exploded view of the drive arrangement of FIG. 5;

fig. 9 is a schematic cross-sectional view of an air conditioning indoor unit according to one 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 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 intake vent 121 at its top and an exhaust vent 122 at its bottom. 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 122 via the indoor fan 170.

Fig. 2 is a schematic structural view of an air conditioning indoor unit 100 according to an embodiment of the present invention. Referring to fig. 2, in particular, the air conditioning indoor unit 100 further includes a humidifying pipe 180. The humidifying pipe 180 may be disposed at the air outlet 122 for communicating with a humidifier 190 supplying the gaseous water mist. One end of the humidifying pipe 180 is communicated with the air outlet of the humidifier 190, and the other end is closed. The peripheral wall of the humidifying pipe 180 may have a plurality of humidifying holes to emit the gaseous mist to the air outlet 122, so as to be carried to the surrounding environment by the outlet air of the indoor unit 100. The humidifier 190 may be a cold mist humidifier, an ultrasonic humidifier, or the like. In some preferred embodiments, the humidifier 190 is an ultrasonic humidifier, which not only has high humidification performance, but also has a high safety factor and low noise. The number of the humidifying holes can be 20-50, such as 20, 30, 40, 50 and the like. In some embodiments, the humidifier 190 may be disposed outside the indoor unit 100. The humidifier tube 180 may be disposed through the cabinet to communicate with the humidifier 190.

The humidifying pipe 180 is arranged at the air outlet 122 of the air-conditioning indoor unit 100, the peripheral wall of the humidifying pipe 180 is provided with a plurality of humidifying holes, gaseous water mist can be emitted to the air outlet 122 and can be uniformly blown to the indoor environment under the blowing action of the indoor unit fan 170, the comfort level of a user is improved, and the probability of allergy, asthma and immune system diseases is reduced.

In some preferred embodiments, the humidifying pipe 180 may be provided to extend in a lateral direction of the air conditioning indoor unit 100. The plurality of humidifying holes are uniformly distributed on the surface of the humidifying pipe 180 departing from the indoor unit fan 170, so that the air outlet range is enlarged, and the humidifying uniformity is improved.

The humidifying pipe 180 may be fixed to the frame 110 of the cabinet to improve stability of the humidifying pipe 180. In some preferred embodiments, the humidifying pipe 180 may be fixed at the edge of the frame 110 adjacent to the air outlet 122 to reduce the wind resistance of the humidifying pipe 180 to the indoor unit fan 170. More preferably, the humidifying pipe 180 may be disposed in a middle portion of an air path of the indoor unit 100, so as to further improve the uniformity of humidification of the indoor unit 100.

In particular, the indoor unit 100 further includes a cleaning assembly 150 and at least one driving device 140. At least one drive device 140 can be provided in part in communication with the purge assembly 150 to drive movement of the purge assembly 150. In the present invention, the number of the driving devices 140 may be one, two, or more, etc. In some preferred embodiments, the number of the driving devices 140 is two. The two driving devices 140 are respectively disposed to be partially fixedly connected to the ends of both lateral sides of the purification assembly 150, and the two driving devices 140 are configured to be operated in synchronization to improve the stability of the movement of the purification assembly 150.

Fig. 3 is a schematic structural view of an air conditioning indoor unit 100 according to an embodiment of the present invention, in which a purification assembly 150 is in a purification position; fig. 4 is a schematic structural view of the air conditioning indoor unit 100 according to one embodiment of the present invention, in which the purification assembly 150 is in a non-purification position. Referring to fig. 3 and 4, the cleaning assembly 150 can be driven by the driving device 140 to switch between a cleaning position for shielding the air inlet 121 and a non-cleaning position for moving out of the air inlet 121. 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 inventor of the present application has creatively recognized that the gaseous water mist emitted from the humidifying pipe 180 can damp the inside of the indoor unit 100, and the indoor air containing particulate matter enters the inside of the indoor unit 100, and is easily attached to the surface of each component and easily grows bacteria. Particularly, the indoor unit 100 of the air conditioner of the present invention is provided with the purification assembly 150, so that the content of particulate matter entering the inside of the indoor unit 100 of the air conditioner can be reduced, bacteria growing inside the indoor unit 100 of the air conditioner can be reduced, the content of bacteria in the heat exchange air and the gaseous water mist blown out by the indoor unit fan 170 can be reduced, and the air quality of the indoor environment can be ensured. Further, the purifying assembly 150 of the indoor unit 100 of the air conditioner of the present invention can be switched between the purifying position for shielding the air inlet 121 and the non-purifying position for moving out of the air inlet 121 under the driving of the driving device 140, and when the purifying assembly 150 is at the purifying position, the purifying assembly 150 can be moved to the shielding air inlet 121 under the driving of the driving device 140, so as to purify the air flow entering the indoor unit 100 and improve the air quality of the surrounding environment; in the non-cleaning position, the cleaning assembly 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 assembly 150. The purging function can thus be turned on as needed, reducing the frequency of cleaning or replacement of the purge assembly 150.

A dust filter screen may be further disposed between the air inlet grille and the purification component 150, and the air flow entering the indoor unit 100 is firstly coarsely filtered by the dust filter screen, and then is finely filtered by the purification component 150 to be fully purified and then enters the indoor unit 100. The present invention makes the air flow entering the indoor unit 100 pass through the dust filter screen to filter the larger particles such as dust particles and dust therein, so as to prevent the larger particles in the air flow from entering the purifying assembly 150 to affect the purifying efficiency of the purifying assembly 150, and simultaneously reduce the cleaning frequency of the purifying assembly 150.

In some embodiments, the air conditioning indoor unit 100 may include a detection module (not shown). The detection module may be configured to detect an air humidity indicator and an air quality indicator of the ambient environment. The humidifier tube 180 may be configured to controllably emit the gaseous mist based on the air humidity level of the surrounding environment, i.e., the humidifier 190 is configured to controllably operate based on the air humidity level of the surrounding environment. Specifically, when the air humidity index is lower than a predetermined humidity threshold, the humidifying pipe 180 emits gaseous water mist outwards; when the air humidity index is greater than or equal to the predetermined humidity threshold, the humidifying pipe 180 does not emit the gaseous water mist outwards. In some embodiments, the air humidity indicator may be relative humidity and the predetermined humidity threshold may be 35% to 45%, such as 35%, 40% or 45%.

The purge assembly 150 may be configured to controllably switch between the purge position and the non-purge position based on the air quality indicator of the ambient environment and the state of the humidifying tubes 180. Specifically, when the air quality index is greater than or equal to a predetermined quality threshold and/or the humidifying pipe 180 emits gaseous water mist, switching to the purification position; and when the air quality index is lower than the preset quality threshold and the time for the humidifying pipe 180 to stop emitting the gaseous water mist is greater than or equal to a preset time threshold, switching to a non-purification position. For example, PM2.5, the predetermined mass threshold may be 0-35 μ g/m3, such as 0 μ g/m3, 10 μ g/m3, 25 μ g/m3, or 35 μ g/m 3. The predetermined time threshold may be 1-3 min, such as 1min, 2min or 3 min. According to the invention, the purification component 150 is configured to be switched to the purification position when the humidifying pipe 180 emits the gaseous water mist, and switched to the non-purification position when the humidifying pipe 180 stops emitting the gaseous water mist for more than or equal to a preset time threshold value, so that the purification component 150 is always in a working state when the interior of the indoor unit 100 of the air conditioner is wet, bacteria growing in the interior of the indoor unit 100 of the air conditioner are further reduced, the content of bacteria in heat exchange air and the gaseous water mist blown out by the indoor unit fan 170 is reduced, and the air quality of the indoor environment is ensured.

FIG. 5 is a schematic block diagram of the drive device 140 and the purge assembly 150 according to one embodiment of the present invention; FIG. 6 is a schematic structural view of the driving device 140 in FIG. 5; FIG. 7 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. 8 is a schematic exploded view of the driving device 140 of fig. 5. Referring to fig. 5 to 8, 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. 9 is a schematic cross-sectional view of an air conditioning indoor unit 100 according to an embodiment of the present invention. Referring to fig. 9, in order to clearly and intuitively understand 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 through the connecting rod 145 to match the movement of the arc-shaped guide rail 147-1 with an irregular shape, a in fig. 9 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, 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 outer side of.

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 may further include a purification module 151 for purifying an air flow entering the air conditioning indoor unit 100 and at least one mounting bracket 152. One end of the at least one mounting bracket 152 may be configured to be rotatably coupled to the connecting rods 145 of the at least one driving device 140, respectively, and the other end may be configured to be slidably engaged with the arc-shaped guide 147-1. The mounting frame 152 may be provided with a first clamping groove, which is configured to be clamped with a transverse end of the purification module 151, so as to facilitate the cleaning of the purification module 151, and prevent the purification module 151 from being damaged due to the direct fixed connection with the arc-shaped rack 143. In the illustrated embodiment, the driving device 140 and the mounting frames 152 are two in number, and the two mounting frames 152 may be oppositely disposed at both ends of the purification module 151 in the transverse direction and clamped with the purification module 151 through first clamping grooves, that is, the first clamping grooves of the two mounting frames 152 clamped with both ends of the purification module 151 in the transverse direction are oppositely disposed.

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.

In the present invention, the number of the purification modules 151 in the purification assembly 150 may be one or more. When the number of the purification modules 151 is plural, the plural purification modules 151 may be fixedly connected by a coupling member. The connector may have two second slots opposite to each other, and two adjacent purification modules 151 may be respectively configured to be fastened to the two slots, so as to be combined and fixed. In some preferred embodiments, the two second locking grooves of each coupling member may be disposed in communication with each other, and two purification modules 151 engaged with the coupling member may abut against each other, so as to ensure sufficient purification of the air flow entering the indoor unit 100. The purification assembly 150 may also include two cross bars 153 extending in the transverse direction. The cross bar 153 may be configured to be fixedly connected to the plurality of mounting frames 152, so as to ensure that the plurality of mounting frames 152 move synchronously, thereby improving the moving stability of the purification module 151.

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 for guiding inflow of the refrigerant, and a first branch pipe and a second branch pipe for respectively conveying the refrigerant to the first heat exchange area and the second heat exchange area, and an electronic expansion valve. The indoor unit heat exchanger 160 may include a first heat exchange section horizontally disposed below the air intake 121, a second heat exchange section extending from a front end of the first heat exchange section to a front side below, and a third heat exchange section vertically extending downward from a lower end of the second heat exchange section. The first flow dividing pipeline and the second flow dividing pipeline are respectively connected into the first heat exchange section and the third heat exchange section from the second heat exchange section, namely the first heat exchange area is composed of the first heat exchange section and part of the second heat exchange section, and the second heat exchange area is composed of the third heat exchange section and part of the second heat exchange section. 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 located below the air inlet 121 is more likely to contact more ambient air than the second heat exchange area located at the front side of the interior of the casing, and the heat exchange efficiency is relatively high, the electronic expansion valve is preferably disposed at the input end of the second branch pipeline 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 may be configured to increase its opening degree to a first opening degree when the purge module 151 moves to the purge position; when the purge module 151 moves to the non-purge position, the electronic expansion valve decreases its opening degree to a second opening degree smaller than the first opening degree. That is, when the purification module 151 is in the purification mode, the air resistance thereof reduces the air flow passing through the first heat exchange region, thereby reducing the heat exchange amount of the refrigerant in the first heat exchange region. At the moment, the opening degree of the electronic expansion valve 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 the purification module 151 is in the non-purification mode, the air resistance thereof reduces the air flow passing through the second heat exchange area, thereby reducing the heat exchange amount of the refrigerant in the second heat exchange area. At this time, the opening degree of the electronic expansion valve is reduced, so that the refrigerant flowing into the second heat exchange area is reduced, and the refrigerant flowing into the first heat exchange area 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 may be configured to increase or decrease the opening degree thereof 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 event that the difference between the first surface temperature and the second surface temperature is greater than the temperature difference, the electronic expansion valve is configured to increase the opening value when the first surface temperature is less than the second surface temperature; the electronic expansion valve decreases the opening value when the first surface temperature is greater than the second surface temperature. That is, after the opening degree of the electronic expansion valve 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 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 eliminated rapidly.

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 uses a variable frequency compressor, and the throttle device uses an electronic expansion valve with an adjustable opening degree.

Because the air resistance of the air flow generated by the indoor unit fan 170 is obviously different when the purification assembly 150 is in the purification position and the non-purification position, after entering the purification mode, the air flow is filtered, which inevitably results in the attenuation of the heat exchange effect of the indoor unit heat exchanger 160, and the high load problem is easy to occur, and the air conditioner can be correspondingly controlled 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 the purification assembly 150 enters 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 purification assembly 150 enters 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 purification assembly 150 enters 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 purification assembly 150 enters 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 module enters the purification mode, 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

1. An indoor unit of an air conditioner, comprising:

the humidifying pipe is arranged at the air outlet and is used for communicating a humidifier for supplying gaseous water mist; the peripheral wall of the humidifying pipe is provided with a plurality of humidifying holes so as to emit gaseous water mist to the air outlet, so that the air outlet of the indoor unit of the air conditioner is brought to the ambient environment; and

the device comprises a purification assembly and at least one driving device, wherein the at least one driving device is partially connected with the purification assembly to drive the purification assembly to move;

the indoor unit heat exchanger is arranged in the housing, is configured to exchange heat with air flowing through the housing, and is provided with a first heat exchange area and a second heat exchange area, a main pipeline, a first branch pipeline and a second branch pipeline, 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 an electronic expansion valve is; wherein

The purification assembly is 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 purification assembly is configured to be switched to the purification position when the air quality index of the surrounding environment is larger than or equal to a preset quality threshold and/or the humidifying pipe emits gaseous water mist; when the air quality index is lower than the preset quality threshold and the time for stopping the humidifying pipe from emitting the gaseous water mist is greater than or equal to a preset time threshold, switching to the non-purification position; and is

The electronic expansion valve is arranged at the input end of the second shunt pipeline and is configured to increase the opening degree of the electronic expansion valve to a first opening degree when the purification component moves to the purification position; when the purge assembly moves to the non-purge position, the electronic expansion valve decreases its opening to a second opening that is less than the first opening.

2. The indoor unit of air conditioner according to claim 1, wherein

The humidifying pipe is arranged to extend along the transverse direction of the indoor unit of the air conditioner; and is

3. The indoor unit of air conditioner according to claim 2, wherein

The humidifying pipe is fixed on the framework, so that the stability of the humidifying pipe is improved.

4. The indoor unit of air conditioner according to claim 1, wherein

The humidifier is an ultrasonic humidifier.

5. The indoor unit of air conditioner according to claim 1, wherein

The humidifier is arranged outside the indoor unit of the air conditioner; and is

6. 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;

7. The indoor unit of claim 6, wherein the rail assembly comprises:

a base disposed at a lateral end of the housing; and

the surface of the side cover, which is far away from the base, is provided with an arc-shaped guide rail so as to limit the movement path of the purification assembly.

8. The indoor unit of an air conditioner according to claim 7, wherein the purification assembly includes: