CN107013976B - Air conditioner indoor unit and method for controlling sliding of first filter screen by air conditioner indoor unit - Google Patents

Abstract

The invention discloses an air conditioner indoor unit and a method for controlling the sliding of a first filter screen of the air conditioner indoor unit. The air conditioner indoor unit comprises: a face frame, the top wall of which is provided with an air inlet; a first filter screen, along the top wall and the front wall of the face frame It slides up and down with the face frame, and has a working position opposite to the air inlet and a storage position far away from the air inlet; the second filter screen overlaps with the first filter screen; the air quality detection device is used to detect the particles in the intake air concentration value; a driving device for driving the first filter to slide up and down; a controller, which is electrically connected with the air quality detection device and the driving device, and controls the driving device to drive the first particle concentration value when the particle concentration value is greater than or equal to the preset particle concentration value A filter screen slides to the working position; and when the particle concentration value is less than the preset particle concentration value, the control driving device drives the first filter screen to slide to the storage position. The air conditioner indoor unit of the present invention can automatically control the sliding of the first filter screen between the working position and the storage position.

Description

Air conditioner indoor unit and method for controlling sliding of first filter screen by air conditioner indoor unit

technical field

The invention relates to the field of air conditioners, in particular to an air conditioner indoor unit and a method for controlling the sliding of a first filter screen by the air conditioner indoor unit.

Background technique

The existing air conditioner indoor unit includes a face frame, an air inlet is opened on the top of the face frame, and a double-layer filter screen is arranged at the air inlet to filter the incoming air before heat exchange. The double-layer filter screen includes a first filter screen for filtering particles and a second filter screen for filtering larger particles. Usually, the filter holes of the first filter screen are small and dense, which has a strong blocking effect on the air. When the particle concentration of the wind air is small, in order to prevent the first filter screen from blocking the flow of the intake air, the first filter screen needs to be manually detached from the air inlet. This manual assembly and disassembly method is cumbersome and difficult to operate.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide an indoor unit of an air conditioner, which aims to automatically control the sliding of the first filter screen between the working position and the storage position.

In order to achieve the above-mentioned technical purpose, the present invention provides an air conditioner indoor unit, comprising:

a face frame, the face frame has a front wall and a top wall connected with the upper edge of the front wall, and the top wall is provided with an air inlet;

The first filter screen is used to filter particles with a diameter of 0.1 μm to 0.3 μm. The first filter screen is slidably fitted with the face frame along the inner side of the top wall and the front wall. The first filter screen The net has a working position opposite to the air inlet, and a storage position away from the air inlet;

A second filter screen extends along the inner side of the top wall and the front wall, and overlaps with the first filter screen, and the filter hole diameter of the second filter screen is larger than the filter hole of the first filter screen Aperture;

Air quality detection device to detect the particle concentration value of the intake air;

a driving device for driving the first filter net to slide up and down;

a controller, electrically connected to both the air quality detection device and the driving device, the controller is used for controlling the driving device to drive the The first filter screen slides to the working position; and when the particle concentration value is less than the preset particle concentration value, the driving device is controlled to drive the first filter screen to slide to the storage position.

Preferably, the inner side of the face frame is provided with a plurality of chute structures spaced along the left-right direction, the chute structure is provided with a chute for the first filter screen to slide, and the chute is arranged along the The inner edges of the front and top wall cross-sections extend.

Preferably, the driving device includes a motor, and a gear sleeved with a rotating shaft of the motor;

The first filter screen is provided with a rack, the rack is arranged in parallel with the two sides of the first filter screen in the left-right direction, the rack is meshed with the gear, and the motor drives the gear to rotate to drive the The first filter mesh slides along the chute.

Preferably, the chute structure includes two parallel first arc-shaped ribs arranged on the inner side of the face frame, the first arc-shaped ribs extend along the inner edges of the cross-sections of the front wall and the top wall, and the two The first arc-shaped ribs are spaced to form the chute.

Preferably, at least one of the chute structures is provided at the end of the face frame, the racks protrude from one side of the first filter screen and protrude from the outer side of the first filter screen, and all the the rack is arranged adjacent to the chute structure at the end of the face frame;

The connection between the top wall and the front wall is provided with an arc-shaped plate for the gear to be mounted on, and the gear and the rack are located outside the arc-shaped plate.

Preferably, a photocatalyst is provided on the second filter screen, and the air conditioner indoor unit further includes an ultraviolet lamp for irradiating the photocatalyst, and the photocatalyst is used for catalyzing the decomposition of organic matter under the irradiation of the ultraviolet lamp.

Preferably, the second filter screen is arranged below the first filter screen, and the first filter screen and the second filter screen are arranged in an up-down direction.

The present invention also provides a method for controlling the sliding of the first filter screen by the indoor unit of the air conditioner, comprising the following steps:

Step S11, the indoor unit of the air conditioner receives a start-up instruction, and the air quality detection device detects and obtains the particle concentration value L _r in the intake air, and sends it to the controller;

Step S12, the controller compares the particle concentration value L _r with the pre-stored preset particle concentration value L _o , if L _r ≥L _o , execute step S13 , and if L _r <L _o , execute step S13 Step S14;

Step S13, the controller controls the drive device to drive the first filter screen to slide to the working position;

Step S14, the controller controls the driving device to drive the first filter to slide to the storage position.

Preferably, the particles are PM2.5, and the range of the preset particle concentration value L _o is [40 μg/m ³ , 75 μg/m ³ ].

Preferably, the following steps are also included:

Step S21, the indoor unit of the air conditioner receives a start-up instruction, and the air quality detection device detects and obtains the organic matter concentration value _Pr in the intake air, and sends it to the controller;

Step S22, the controller compares the organic matter concentration value Pr with the pre-stored preset organic matter concentration value P _o , if _{Pr ≥P o} , execute step S23 , and if _Pr <P _o , execute step S23 Step S24;

Step S23, the controller controls the ultraviolet light to be turned on to illuminate the second filter screen;

Step S24, the controller controls the ultraviolet lamp to turn off.

Preferably, the organic matter is formaldehyde, and the preset organic matter concentration value P _o ranges from [0.05 mg/m ³ , 0.08 mg/m ³ ].

In the air conditioner indoor unit of the present invention, the first filter mesh is slidably fitted with the face frame along the inner sides of the top wall and the front wall, and the air quality detection device is used to detect and obtain the particle concentration of the intake air. value, the controller compares the particle concentration value with a preset preset particle concentration value, and when the particle concentration value is greater than or equal to the preset preset particle concentration value, the controller controls the The driving device drives the first filter screen to slide to the working position. At this time, after the intake air enters from the air inlet, it is filtered by the first filter screen and the second filter screen in sequence, and then enters the evaporator assembly. Circumferential heat exchange area, so as to effectively purify the intake air, so that the quality of the intake air is better; when the particle concentration value is less than the preset particle concentration value, the controller controls the drive device to drive the The first filter screen slides to the storage position. At this time, after the intake air enters from the air inlet, it is directly filtered by the second filter screen and enters the heat exchange area in the circumferential direction of the evaporator assembly. During the process, the intake air does not need to pass through the first filter screen, and the flow speed of the intake air is relatively fast, which is beneficial to improve the heat exchange efficiency. It can be seen that the air conditioner indoor unit of the present invention can automatically control the sliding of the first filter screen between the working position and the storage position according to the particle concentration value of the intake air, and when the first filter screen is in the In the storage position, the intake air can be filtered through the second filter screen.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained according to the structures shown in these drawings without creative efforts.

1 is a schematic structural diagram of an embodiment of an air conditioner indoor unit according to the present invention, with a first filter screen in a working position;

Fig. 2 is another structural schematic diagram of the indoor unit of the air conditioner in Fig. 1, with the first filter screen in a storage position

Fig. 3 is a partial structural schematic diagram of the indoor unit of the air conditioner in Fig. 1;

Fig. 4 is the exploded schematic diagram of the partial structure of the air conditioner indoor unit in Fig. 3;

Fig. 5 is the partial enlarged view of A place in Fig. 4;

Fig. 6 is a partial enlarged view at B in Fig. 4;

7 is a schematic diagram of controlling the sliding of the first filter screen in the method for controlling the sliding of the first filter screen by the indoor unit of the air conditioner according to the present invention;

8 is a schematic diagram of controlling the operation of the ultraviolet lamp in the method for controlling the sliding of the first filter screen by the indoor unit of the air conditioner according to the present invention.

Description of reference numbers:

The object realization, functional characteristics and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that if there are directional indications (such as up, down, left, right, front, back, etc.) involved in the embodiments of the present invention, the directional indications are only used to explain a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly.

In addition, the technical solutions between the various embodiments can be combined with each other, but must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of such technical solutions does not exist. , is not within the scope of protection required by the present invention.

The present invention provides an air conditioner indoor unit, which aims to automatically control the sliding of the first filter screen between the working position and the storage position. Please refer to FIG. 1 , FIG. 2 and FIG. 4 . The air conditioner indoor unit includes:

The face frame 100, the face frame 100 has a front wall 110 and a top wall 120 connected with the upper edge of the front wall 110, and the top wall 120 is provided with an air inlet 121;

The first filter screen 200 is used to filter particles with a diameter of 0.1 μm to 0.3 μm. The first filter screen 200 is slidably fitted with the face frame 100 up and down along the inner sides of the top wall 120 and the front wall 110 . The first filter screen 200 has The working position opposite to the air inlet 121, and the storage position away from the air inlet 121;

The second filter screen 400 extends along the inner side of the top wall 120 and the front wall 110, and overlaps with the first filter screen 200, and the filter hole diameter of the second filter screen 400 is larger than the filter hole diameter of the first filter screen 200;

Air quality detection device (not shown) to detect the particle concentration value of the intake air;

a driving device, which is used to drive the first filter screen 200 to slide up and down;

A controller (not shown) is electrically connected with the air quality detection device and the driving device, and the controller is used to control the driving device to drive the first particle concentration value when the particle concentration value is greater than or equal to a preset preset particle concentration value. A filter screen 200 slides to the working position; and when the particle concentration value is less than the preset particle concentration value, the driving device is controlled to drive the first filter screen 200 to slide to the storage position.

Specifically, the front wall 110 and the rear wall of the face frame 100 enclose an accommodating cavity, and the accommodating cavity is used for accommodating the air duct assembly 2 and the evaporator assembly 1 of the air conditioner indoor unit, and the air inlet 121 Opened on the top wall 120 , the air inlet 121 is provided with an air inlet grill 3 . The first filter screen 200 and the second filter screen 400 are stacked and disposed below the air inlet 121 , and are disposed in a manner of semi-surrounding the evaporator assembly 1 .

The first filter screen 200 is used to filter particles with a diameter of 0.1 μm to 0.3 μm, especially PM2.5. The first filter screen 200 is slidably fitted with the face frame 100 up and down along the inner sides of the top wall 120 and the front wall 110 . When the first filter screen 200 slides between the evaporator assembly 1 and the top wall 120 of the face frame 100, the first filter screen 200 is opposite to the air inlet 121, and this position is the working position; the first filter screen 200 slides to When between the evaporator assembly 1 and the front wall 110 of the face frame 100 , the first filter screen 200 is away from the air inlet 121 , and this position is the storage position. It is worth mentioning that the sliding fit structure between the first filter screen 200 and the face frame 100 is not limited, and the details will be described in detail later.

The filter hole diameter of the second filter screen 400 is larger than the filter hole diameter of the first filter screen 200 , and the filter hole diameter that can be used to block dust and other pollutants with a filter hole diameter larger than that of the first filter screen 200 and larger than 0.3 μm is not effective for the intake air. The blocking effect of the air is small, which is beneficial to the flow of the intake air.

The setting position of the air quality detection device is best to facilitate the user to view and accurately measure the particle concentration of the intake air. In this embodiment, in order to ensure the accurate measurement of the particle concentration value Lr in the intake air, it is preferred The air quality detection device is adjacent to the air inlet 121 . The air quality detection device is relatively common in the market, and can detect the concentration value of organic substances (such as formaldehyde) and particles (such as PM2.5) in the air in real time. The air quality detection device generates a detection signal by using the corresponding sensor inside, amplifies the detection signal of the sensor through an operational amplifier, removes noise interference through a filter circuit, and then collects it through AD, and uses the CPU to process and calculate, and then convert it into pollution. substance concentration value.

In the air conditioner indoor unit of the present invention, the first filter screen 200 is slidably fitted with the face frame 100 up and down along the inner sides of the top wall 120 and the front wall 110, and the air quality detection device is used to detect and obtain the particle concentration value of the intake air, The controller compares the particle concentration value with a preset preset particle concentration value, and when the particle concentration value is greater than or equal to the preset preset particle concentration value, the controller controls the drive The device drives the first filter screen 200 to slide to the working position, as shown in FIG. 1 (the direction indicated by W in FIG. 1 is the air intake direction). After filtering by the filter screen 200 and the second filter screen 400, it enters the heat exchange area in the circumferential direction of the evaporator assembly 1, thereby effectively purifying the intake air and making the quality of the intake air better; when the particle concentration value is less than the When the particle concentration value is preset, the controller controls the driving device to drive the first filter screen 200 to slide to the storage position, as shown in FIG. 2 . It is directly filtered by the second filter screen 400 and enters the heat exchange area in the circumferential direction of the evaporator assembly 1. In this process, the intake air does not need to pass through the first filter screen 200, and the flow speed of the intake air is faster, which is conducive to improving the heat transfer efficiency. It can be seen that the air conditioner indoor unit of the present invention can automatically control the first filter screen 200 to slide to the working position or the storage position according to the particle concentration value of the intake air, and when the first filter screen 200 is in the storage position, The intake air can be filtered through the second filter screen 400 .

Please refer to FIG. 4 , FIG. 5 and FIG. 6 , there are various ways to set the sliding fit between the first filter screen 200 and the face frame 100 . For example, the first filter screen 200 and the face frame 100 can be pulled through the pull ring and the sliding bar. Sliding fit, or the first filter mesh 200 and the face frame 100 are slidably fit through the sliding groove 130 structure. Considering that the sliding pull ring and the sliding rod are easier to move together, so that the stability of the first filter screen 200 in the working position affects the work, it is preferable to use the sliding groove 130 for structural cooperation to achieve better limiting effect.

Further, in order to facilitate the first filter screen 200 to slide up and down, the inner side of the face frame 100 is provided with a plurality of chute 130 structures arranged at intervals along the left and right directions, and the chute 130 structure is provided with a sliding groove for the first filter screen 200 to slide. The sliding groove 130 extends along the inner edge of the cross-section of the front wall 110 and the top wall 120 , and the cross-section is perpendicular to the left-right direction of the face frame 100 .

In this embodiment, the chute 130 extends along the inner edges of the cross-sections of the front wall 110 and the top wall 120 in an arc shape. and an arc-shaped groove section connecting the upper groove section and the lower groove section, the arc-shaped groove section is used to reduce the resistance of the first filter screen 200 in the process of sliding up and down, so that the first filter screen 200 can slide more smoothly . When the first filter screen 200 slides to the upper groove section of the chute 130, that is, the first filter screen 200 is in the working position, the first filter screen 200 and the second filter screen 400 jointly filter the intake air; When the net 200 slides to the lower groove section of the chute 130 , that is, the first filter screen 200 is located at the storage position, only the second filter screen 400 filters the intake air.

In order to improve the installation stability of the first filter screen 200, the number of the structure of the chute 130 is preferably multiple. Specifically, in this embodiment, the number of the structure of the chute 130 is three, and the three structures of the chute 130 are along the surface frame. 100 are arranged at intervals in the left and right directions: the two chute structures 130 are located on the left and right sides of the air inlet 121 respectively, so as to ensure the stability of sliding; the other chute 130 structure is arranged in the middle of the air inlet 121 to support In the middle of the first filter screen 200, the first filter screen 200 is placed to be bent and deformed by the action of its own gravity or the action of the wind pressure when the wind enters.

Further, the driving device includes a motor, and a gear 300 sleeved with the rotating shaft of the motor;

The first filter screen 200 is provided with a rack 210, the rack 210 is arranged in parallel with the two sides of the first filter screen 200 in the left and right direction, the rack 210 meshes with the gear 300, and the motor drives the gear 300 to rotate to drive the The first filter screen 200 slides along the chute 130 .

In this embodiment, the rack 210 can be disposed on the left side or the right side of the first filter screen 200 , or in the middle of the first filter screen 200 , and only the rack 210 is required to be located from the front side of the first filter screen 200 . The side can be extended backward to the rear side. In this way, when the motor drives the gear 300 to rotate, the gear 300 drives the first filter screen 200 to slide along the chute 130 along the extending direction of the rack 210 .

It is worth mentioning that if the first filter screen 200 and the face frame 100 are slidably matched with the sliding rod through the traction pull ring, the driving device includes a motor, a wire rope reel connected to the rotating shaft of the motor, and the wire rope. The rope reel is connected to the traction pull ring, and the motor drives the wire rope reel to rotate to make the traction pull ring slide, and the first filter mesh 200 can also be slidably matched with the face frame 100 .

Further, the structure of the chute 130 includes two parallel first arc-shaped ribs disposed on the inner side of the face frame 100 , the first arc-shaped ribs extend from the top wall 120 to the front wall 110 , and the two first arc-shaped ribs extend from the top wall 120 to the front wall 110 . The ribs are spaced to form a chute 130 sandwiched therebetween.

In this embodiment, the chute 130 is formed by sandwiching the two first arc-shaped ribs, so that the left and right sides of the chute 130 are arranged in a penetrating manner, so that the chute 130 can be inserted and installed along the through direction of the chute 130 The first filter screen 200. Of course, the arrangement of the structure of the chute 130 is not limited to this, and the structure of the chute 130 may also be a mounting plate provided on the inner side of the face frame 100, and the chute 130 is opened on the mounting plate.

Further, at least one of the chute structures is disposed at the end of the face frame 100 , the rack 210 protrudes from a left side of the first filter screen 200 from the outer side of the first filter screen 200 , and the rack 210 is adjacent to The sliding groove structure at the end of the face frame 300 is provided; the connection between the top wall 120 and the front wall 110 is provided with an arc-shaped plate 150 for installing the gear 300, and the gear 300 and the rack 210 are located on the outer side of the arc-shaped plate 150 (optional See Figure 3).

In this embodiment, the gear 300 is provided with a gear seat 310, and the gear 300 is installed on the arc-shaped plate 150 through the gear seat 310; when installing the first filter screen 200, the right side of the first filter screen 200 starts from the leftmost The chute 130 is inserted and pushed from left to right until the rack 210 on the left side of the first filter screen 200 is in contact with the arc-shaped plate 150 , then it can be determined that the first filter screen 200 is installed with the chute 130 When it is in place, the first filter screen 200 is pushed along the extending direction of the chute 130 until the rack 210 engages with the gear 300 , thereby completing the installation of the first filter screen 200 .

Further, in order to improve the quality of the intake air and prevent the organic matter concentration in the intake air from being too high and affecting the air quality, the second filter screen 400 is provided with a photocatalyst, and the air conditioner indoor unit includes an ultraviolet lamp for irradiating the photocatalyst. 500, the photocatalyst is used to catalyze the decomposition of organic matter under the irradiation of the ultraviolet lamp 500. The ultraviolet lamp 500 can be installed on the inner side of the face frame 100 , or can be installed on other installation structures in the face frame 100 .

In this embodiment, the ultraviolet lamp 500 can emit ultraviolet rays when working ₂ and H ₂ O, the ultraviolet light emitted by the UV lamp 500 can also be used for sterilization, which is beneficial to provide healthy intake air to the room.

Further, the second filter screen 400 is disposed below the first filter screen 200 , and the first filter screen 200 and the second filter screen 400 are arranged in an up-down direction.

Specifically, the structure of the chute 130 includes a second arc-shaped rib disposed on the inner side of the face frame 100, and the second arc-shaped rib is disposed on the side of the first arc-shaped rib closer to the evaporator assembly 1, The second arc-shaped rib extends from the top wall 120 to the front wall 110 and is arranged in parallel with the first arc-shaped rib. The second arc-shaped rib and the first arc-shaped rib are sandwiched to form a There is an installation groove 140 for the second filter screen 400 to be installed; when the second filter screen 400 is installed, the second filter screen 400 is inserted from the leftmost chute 130 and pushed from left to right until the second filter screen 400 is The two sides in the left-right direction are completely matched with the corresponding installation grooves 140 .

In order to facilitate the disassembly and assembly of the second filter screen 400, the left side of the second filter screen 400 is provided with a lug 410 extending to the left. mate or separate.

Please refer to FIG. 7 , the present invention also proposes a method for controlling the sliding of the first filter screen by the indoor unit of the air conditioner, including the following steps:

Step S11, the indoor unit of the air conditioner receives a start-up instruction, and the air quality detection device detects and obtains the particle concentration value L _r in the intake air, and sends it to the controller;

The power-on command in this embodiment may be a power-on command issued by the start button of the indoor unit of the air conditioner, or a power-on command issued by an infrared remote control of a remote controller. The particle concentration value _{L r is} sent to the controller.

Step S12, the controller compares the particle concentration value L _r with the pre-stored preset particle concentration value L _o , if L _r ≥L _o , execute step S13 , and if L _r <L _o , execute step S13 Step S14;

Step S13, the controller controls the drive device to drive the first filter screen to slide to the working position;

Step S14, the controller controls the driving device to drive the first filter to slide to the storage position.

In this embodiment, the setting range of the preset particle concentration value L _o may be set according to the sensitivity of the human body to particles in the air, or may be set according to the national fine particle concentration standard for air quality; in L _r When ≥L _o , it can be determined that the particle concentration of the current intake air does not meet the requirements of the human body for a healthy air environment, so the controller controls the driving device to drive the first filter to slide to the working position. After entering the air inlet, the particles are filtered by the first filter screen and the second filter screen in turn, and then enter the heat exchange area in the circumferential direction of the evaporator assembly, so as to effectively purify the intake air and improve the quality of the intake air; at L _r When <L _o , it can be determined that the particle concentration of the current intake air is more in line with the human body's requirements for a healthy air environment, so it is not necessary to use the first filter to filter the intake air, so the controller controls the drive device to drive the first filter. Slide to the storage position. At this time, the intake air is directly filtered by the second filter screen and enters the heat exchange area in the circumferential direction of the evaporator assembly. In this process, the intake air does not need to pass through the first filter screen. The flow speed is faster, which is beneficial to improve the heat exchange efficiency.

It is worth mentioning that the particle concentration in the intake air usually changes little in a long period of time. The air quality detection device detects and obtains the particle concentration value L _r in the intake air in real time, which will increase its workload, and has It may cause the first filter mesh to slide between the working position and the storage position too frequently. Therefore, preferably, the air quality detection device adopts a periodic detection method to detect and obtain the particle concentration value L _r in the intake air.

Further, the particles are PM2.5, and the range of the preset particle concentration value L _o is [40 μg/m ³ , 75 μg/m ³ ], for example, the preset particle concentration value L _o may be 40 μg/m ³ , 50 μg/m ³ , 60 μg/m ³ , 75 μg/m ³ . By setting the range of the preset particle concentration value L _o , it can be ensured that the particle concentration value Lr of the intake air is higher than 75 μg/m ³ , that is, when the particle concentration of the intake air is so high that it does not meet the requirements of the human body for a healthy air environment, the The controller controls the driving device to drive the first filter screen to slide to the working position to filter _PM2.5 in the intake air in time ^; When the particle concentration is low enough to meet the human body's requirements for a healthy air environment, the controller controls the drive device to drive the first filter to slide to the storage position, so as to avoid affecting the flow of the intake air in time.

Further, referring to FIG. 8 , the described control method for the first filter screen of the indoor unit of the air conditioner further includes the following steps:

Step S21, the air conditioner indoor unit receives the power-on signal, and the air quality detection device detects and obtains the organic matter concentration value _Pr in the intake air, and sends it to the controller;

Step S22, the controller compares the organic matter concentration value Pr with the pre-stored preset organic matter concentration value Po, if _{Pr ≥P o} , execute step S23 , and if _Pr <P _o , execute step S23 S24;

Step S23, the controller controls the ultraviolet light to be turned on to illuminate the second filter screen;

Step S24, the controller controls the ultraviolet lamp to turn off.

In this embodiment, the setting range of the preset organic matter concentration value P _o can be set according to the comfort of the human body to the organic matter concentration in the air, or according to the national excellent standard of organic matter concentration in air quality: when P _r ≥ When P _o , it can be determined that the organic matter concentration of the current intake air does not meet the requirements of the human body for a healthy air environment, so the controller controls the ultraviolet light to turn on to illuminate the second filter screen. At this time, the photocatalyst of the second filter screen Under the irradiation of ultraviolet lamp, formaldehyde, methylamine, benzene and other harmful organic compounds are catalyzed and decomposed into harmless substances, so as to effectively purify the intake air and improve the quality of the intake air; when P _r <P _o , it can be determined that the current intake The organic matter concentration of the wind air is more in line with the human body's requirements for a healthy air environment, so it is not necessary to use ultraviolet light to illuminate the second filter screen, so the controller controls the ultraviolet light to turn off to save electricity.

Further, the organic matter is formaldehyde, the range of the preset organic matter concentration value P _o is [0.05mg/m ³ , 0.08mg/m ³ ], for example, the preset organic matter concentration value P _o may be 0.05mg/m ³ , 0.07 mg/m ³ or 0.08 mg/m ³ . By setting the range of the preset organic matter concentration value P _o , it can be ensured that the organic matter concentration value P _r of the intake air is higher than 0.08 mg/m ³ , that is, when the organic matter concentration of the intake air is so high that it does not meet the requirements of the human body for a healthy air environment , the controller controls and controls the ultraviolet light to be turned on to illuminate the second filter screen; and the organic matter concentration value P _r of the intake air is lower than 0.05mg/m ³ , that is, the organic matter concentration of the intake air is low enough to meet the health of the human body. When required by the air environment, the controller controls the ultraviolet lamp to turn off.

The above are only the preferred embodiments of the present invention, which are not intended to limit the scope of the patent. Any equivalent structure or equivalent process transformation made by using the contents of the description and the accompanying drawings of the present invention is directly or indirectly used in other related technical fields. The principles are included in the scope of patent protection of the present invention.

Claims (9)

1. An air conditioner indoor unit is characterized in that, comprising: a face frame, the face frame has a front wall and a top wall connected with the upper edge of the front wall, and the top wall is provided with an air inlet; The first filter screen is used to filter particles with a diameter of 0.1 μm to 0.3 μm. The first filter screen is slidably fitted with the face frame along the inner side of the top wall and the front wall. The first filter screen The net has a working position opposite to the air inlet, and a storage position away from the air inlet; A second filter screen, extending along the inner side of the top wall and the front wall, the second filter screen is arranged below the first filter screen, the first filter screen and the second filter screen It is stacked below the air inlet, and is arranged in a semi-surrounding evaporator assembly, and the filter hole diameter of the second filter screen is larger than the filter hole diameter of the first filter screen; Air quality detection device to detect the particle concentration value of the intake air; a driving device for driving the first filter net to slide up and down; a controller, electrically connected to the air quality detection device and the driving device, the controller is used for controlling the driving device to drive the first filter when the particle concentration value is greater than or equal to a preset particle concentration value the screen slides to the working position; and, when the particle concentration value is less than the preset particle concentration value, controlling the driving device to drive the first filter screen to slide to the storage position; The inner side of the face frame is provided with a plurality of chute structures spaced along the left and right directions for the installation of the first filter screen, wherein two of the chute structures are located on the left and right sides of the air inlet, respectively. On the side part, another said chute structure is arranged in the middle part of the said air inlet; The chute structure includes two parallel first arc-shaped ribs arranged on the inner side of the face frame. The first arc-shaped ribs extend along the inner edges of the cross-sections of the front wall and the top wall. The interval between the arc-shaped ribs is sandwiched to form a chute; The chute structure also includes a second arc-shaped rib disposed on the inner side of the face frame, and the second arc-shaped rib is disposed on the side of the first arc-shaped rib closer to the evaporator assembly, so the The second arc-shaped rib extends from the top wall to the front wall, and is arranged in parallel with the first arc-shaped rib. Describe the installation slot for installing the second filter. 2 . The air conditioner indoor unit according to claim 1 , wherein the chute structure is provided with a chute for the first filter screen to slide, and the chute is along the cross-section of the front wall and the top wall. 3 . the inner edge of the extension. 3. The air conditioner indoor unit according to claim 2, wherein the driving device comprises a motor and a gear sleeved with a rotating shaft of the motor; The first filter screen is provided with a rack, the rack is arranged in parallel with the two sides of the first filter screen in the left-right direction, the rack is meshed with the gear, and the motor drives the gear to rotate to drive the The first filter mesh slides along the chute. 4 . The air conditioner indoor unit according to claim 3 , wherein at least one of the chute structures is provided at the end of the face frame, and the rack is protruding from one side of the first filter screen. 5 . Out of the outer side of the first filter screen, and the rack is disposed adjacent to the chute structure at the end of the face frame; The connection between the top wall and the front wall is provided with an arc-shaped plate for the gear to be mounted on, and the gear and the rack are located outside the arc-shaped plate. 5 . The air conditioner indoor unit according to claim 1 , wherein a photocatalyst is provided on the second filter screen, and the air conditioner indoor unit further comprises an ultraviolet lamp for irradiating the photocatalyst, and the photocatalyst is used for Under the irradiation of the ultraviolet lamp, the organic matter is catalytically decomposed. 6. A method for controlling the sliding of a first filter screen by an air conditioner indoor unit, wherein the air conditioner indoor unit is the air conditioner indoor unit according to any one of claims 1 to 5, and the air conditioner indoor unit controls the first filter screen. The method of the filter screen sliding includes the following steps: Step S11, the indoor unit of the air conditioner receives a start-up instruction, and the air quality detection device detects and obtains the particle concentration value L _r in the intake air, and sends it to the controller; Step S12, the controller compares the particle concentration value L _r with the pre-stored preset particle concentration value L _o , if L _r ≥L _o , execute step S13 , and if L _r <L _o , execute step S13 Step S14; Step S13, the controller controls the drive device to drive the first filter screen to slide to the working position; Step S14, the controller controls the drive device to drive the first filter to slide to the storage position; Wherein, the second filter screen is arranged below the first filter screen, the first filter screen and the second filter screen are overlapped and arranged below the air inlet, and half surround the evaporator assembly set up. 7. The method for controlling the sliding of the first filter screen of an indoor unit of an air conditioner according to claim 6, wherein the particles are PM2.5, and the range of the preset particle concentration value L _o is [40 μg/m ³ , 75 μg/m ³ ]. 8. The method for controlling the sliding of the first filter screen of an air conditioner indoor unit as claimed in claim 6, further comprising the steps of: Step S21, the indoor unit of the air conditioner receives a start-up instruction, and the air quality detection device detects and obtains the organic matter concentration value _Pr in the intake air, and sends it to the controller; Step S22, the controller compares the organic matter concentration value P _r with the preset organic matter concentration value P _o , if P _r ≥P _o , execute step S23 , and if _Pr <P _o , execute step S24 ; Step S23, the controller controls the ultraviolet light to be turned on to illuminate the second filter screen; Step S24, the controller controls the ultraviolet lamp to turn off. 9 . The method for controlling the sliding of the first filter screen of an indoor unit of an air conditioner according to claim 8 , wherein the organic substance is formaldehyde, and the preset organic substance concentration value _Po ranges from [0.05mg/m ³ , 0.08 mg/m ³ ].

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