Air Conditioner

Abstract

The present invention discloses an air conditioner. The air conditioner includes a housing, a fan, a heat exchanger, a filter module and a speed measuring module. The housing is provided with a return air port and an air outlet. The fan is arranged in the housing and is used to blow the return air entering the housing from the return air port through the air outlet. The heat exchanger is arranged in the housing and is located on the air duct between the return air port and the air outlet. The filter module is arranged in the housing and is located on the side of the heat exchanger close to the return air port and includes a filter. The speed measuring module is arranged between the filter module and the heat exchanger and is configured to measure the actual wind speed of the return air entering the housing from the return air port after being filtered by the filter module. The air conditioner of the present invention arranges the speed measuring module between the filter module and the heat exchanger. The speed measuring module directly measures the wind speed after being filtered by the filter, thereby avoiding the influence of other factors on the judgment of the dirty and blocked condition of the filter, which helps to accurately grasp the time of replacing the filter.

Description

Technical Field

[0001] The invention relates to the field of electrical appliances, and in particular to an air conditioner. Background Art

[0002] The filters of air conditioners are generally replaced according to the cycle or prompts recommended by the manufacturer. However, due to the different usage frequencies and environments of different air conditioners, there are deviations in the measurement and calculation, so the replacement time cannot be accurately controlled. If replaced too early, the filter material will be wasted. If replaced too late, the reliability of the unit will be reduced, energy consumption will increase, and it will also cause secondary air pollution. Summary of the invention

[0003] The invention provides an air conditioner to better grasp the replacement time of the air conditioner filter.

[0004] The present invention provides an air conditioner, comprising:

[0005] A shell body, wherein an air return port and an air outlet are arranged on the shell body;

[0006] A fan is disposed in the housing and is used to blow the return air entering the housing from the return air port out from the air outlet;

[0007] The heat exchanger is arranged in the shell and located on the air duct between the return air port and the air outlet;

[0008] A filter module is disposed in the housing and located on a side of the heat exchanger close to the return air outlet and includes a filter; and

[0009] The speed measuring module is arranged between the filter module and the heat exchanger, and is configured to measure the actual wind speed of the return air entering the shell from the return air port after being filtered by the filter module.

[0010] In some embodiments, the air conditioner further includes a controller communicatively connected to the speed measuring module, and the controller is configured to obtain the actual wind speed from the speed measuring module and determine whether the filter needs to be replaced based on the actual wind speed and the set wind speed.

[0011] In some embodiments, the controller is further configured to obtain the operating frequency of the fan and obtain the set wind speed at the operating frequency according to the operating frequency, and then determine whether the filter needs to be replaced according to the actual wind speed and the set wind speed.

[0012] In some embodiments, the controller is configured to issue a reminder to replace the filter when the actual wind speed is less than the set wind speed.

[0013] In some embodiments, the air conditioner includes at least two speed measuring modules, and the controller is configured to calculate an average actual wind speed based on at least two actual wind speeds measured by the at least two speed measuring modules.

[0014] In some embodiments, the air conditioner further includes a mounting frame assembly connected to the heat exchanger, and the filter module and the speed measurement module are both mounted on the mounting frame assembly.

[0015] In some embodiments, the area of ​​the air inlet of the mounting frame assembly is larger than the area of ​​the air outlet.

[0016] In some embodiments, in the direction from the air inlet to the air outlet of the mounting frame assembly, the inner cavity of the mounting frame assembly includes a parallel section and a tapered section, the filter module is installed in the parallel section, and the area of ​​the tapered section gradually decreases to rectify the airflow passing through the filter module.

[0017] In some embodiments, the filter module includes a filter and a first clamping device and a second clamping device respectively disposed on the upper and lower sides of the filter and arranged side by side, and the first ends of the first clamping device and the second clamping device are rotatably connected so that the second ends can be opened and closed.

[0018] In some embodiments, the first clamping device includes a plurality of first struts arranged side by side at intervals and two first frames arranged at both ends of the plurality of first struts, the first frames include a plurality of first protruding teeth, and the top ends of two opposite first protruding teeth of the two frames are connected to the first struts; the second clamping device includes a plurality of second struts arranged side by side at intervals and two second frames arranged at both ends of the plurality of second struts, the second frames include a plurality of second protruding teeth, and the top ends of two opposite second protruding teeth of the two second frames are connected to the second struts; the plurality of first struts and the plurality of second struts are staggered so that the first clamping device and the second clamping device clamp the filter in the middle and make the filter corrugated.

[0019] In some embodiments, the speed measurement module includes a wind wheel device and a speed sensor. The wind wheel device includes a fan blade and a gear coaxially connected to the fan blade. The fan blade rotates under the action of airflow and drives the gear to rotate. The speed sensor is arranged close to the gear to measure the rotational speed of the gear.

[0020] Based on the technical solution provided by the present invention, the air conditioner includes a shell, a fan, a heat exchanger, a filter module and a speed measuring module. The shell is provided with a return air port and an air outlet. The fan is arranged in the shell and is used to blow the return air entering the shell from the return air port from the air outlet. The heat exchanger is arranged in the shell and is located on the air duct between the return air port and the air outlet. The filter module is arranged in the shell and is located on the side of the heat exchanger close to the return air port and includes a filter. The speed measuring module is arranged between the filter module and the heat exchanger and is configured to measure the actual wind speed of the return air entering the shell from the return air port after being filtered by the filter module. The air conditioner of the present invention arranges the speed measuring module between the filter module and the heat exchanger. The speed measuring module directly measures the wind speed after being filtered by the filter, thereby avoiding the influence of other factors on the judgment of the dirty and blocked condition of the filter, which helps to accurately grasp the time of replacing the filter.

[0021] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0023] Figure 1 A schematic diagram of a partial structure of an air conditioner according to an embodiment of the present invention;

[0024] Figure 2 for Figure 1 Schematic diagram of the structure of the speed measurement module;

[0025] Figure 3 for Figure 2 Schematic diagram of the explosion structure of the wind wheel device;

[0026] Figure 4 for Figure 1 A schematic diagram of the structure of the mounting frame assembly;

[0027] Figure 5 for Figure 4 A schematic cross-sectional view of the mounting frame assembly shown;

[0028] Figure 6 for Figure 5 The HH cross-sectional structural diagram of the mounting frame assembly shown;

[0029] Figure 7 for Figure 4 A schematic diagram of the structure of the lower side plate;

[0030] Figure 8 for Figure 1 A schematic diagram of the structure of the filter module;

[0031] Fig. 9 for Figure 8 The schematic diagram of the structure after the filter module is opened and the filter is taken out;

[0032] Fig.10 for Figure 8 A schematic structural diagram of a first clamping device for a filter module is shown;

[0033] Fig.11 for Figure 8 A schematic structural diagram of a second clamping device for a filter module is shown. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0036] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, and the spatially relative descriptions used here are interpreted accordingly.

[0037] refer to Figures 1 to 11 , the air conditioner of the embodiment of the present invention comprises:

[0038] The housing 10 is provided with an air return port and an air outlet;

[0039] The fan 1 is disposed in the housing 10 and is used to blow the return air entering the housing 10 from the return air port out from the air outlet;

[0040] The heat exchanger 2 is arranged in the housing 10 and located on the air duct between the return air port and the air outlet;

[0041] The filter module 5 is disposed in the housing 10 and is located on a side of the heat exchanger 2 close to the return air outlet and includes a filter 51; and

[0042] The speed measuring module 4 is disposed between the filter module 5 and the heat exchanger 2 , and is configured to measure the actual wind speed of the return air entering the housing 10 from the return air port after being filtered by the filter 51 .

[0043] The air conditioner of the embodiment of the present invention sets the speed measuring module 4 between the filter module 5 and the heat exchanger 2. The speed measuring module 4 directly measures the wind speed after filtering by the filter 51, thereby avoiding the influence of other factors on the judgment of the filter dirtiness and blockage, which helps to accurately grasp the time for filter replacement.

[0044] In some embodiments, the air conditioner is an indoor unit of the air conditioner. The heat exchanger 2 can be used as an evaporator or a condenser.

[0045] In some embodiments, the air conditioner further includes a controller in communication with the speed measuring module 4 , and the controller is configured to obtain the actual wind speed from the speed measuring module 4 , and determine whether the filter 51 needs to be replaced based on the actual wind speed and the set wind speed.

[0046] Specifically, the set wind speed is the wind speed when the filter 51 is dirty and clogged and needs to be replaced. The set wind speed is related to the operating frequency of the fan 1. The operating frequency of the fan 1 is recorded as f, and the set wind speed when the filter is dirty and clogged is recorded as Vmin. Φ is the function symbol, then Vmin=Φ, that is, the set wind speed Vmin is a function of the fan frequency. Therefore, the controller of this embodiment is also configured to obtain the operating frequency f of the fan 1 and obtain the set wind speed at the operating frequency f according to the operating frequency f, and then determine whether the filter 51 needs to be replaced according to the actual wind speed and the set wind speed.

[0047] In some embodiments, the controller is configured to issue a reminder to replace or clean the filter 51 when the actual wind speed is less than the set wind speed.

[0048] In some embodiments, the air conditioner includes multiple speed measuring modules 4, which respectively measure the air flow speed behind the filter module 5 to obtain multiple actual wind speeds. The controller obtains the multiple actual wind speeds and calculates the average actual wind speed based on the multiple actual wind speeds, and then compares the average actual wind speed with the pre-stored set wind speed. When the average actual wind speed is less than or equal to the set wind speed, it is determined that the filter 51 is dirty and blocked, and a signal or alarm is issued to prompt the user to replace or clean the filter.

[0049] refer to Figure 2 and Figure 3In some embodiments, the speed measurement module 4 includes a wind wheel device 41 and a speed sensor 42. The wind wheel device 41 includes a blade 411 and a gear 413 coaxially connected to the blade 411. The blade 411 rotates under the action of the airflow and drives the gear 413 to rotate. The speed sensor 42 is arranged close to the gear 413 to measure the rotation speed of the gear 413. The blade 411 and the gear 413 of the wind wheel device 41 are coaxially arranged, so when the airflow acts on the blade 411, the blade 411 and the gear 413 rotate at the same speed.

[0050] The rotation axis of the fan blade 411 is arranged in the same direction as the flow direction of the airflow.

[0051] In some embodiments, reference Figures 1 to 7 The air conditioner also includes a mounting frame assembly 3 connected to the heat exchanger 2 , and the filter module 5 and the speed measurement module 4 are both installed on the mounting frame assembly 3 .

[0052] In some embodiments, reference Figure 4 and Figure 6 The area of ​​the air inlet of the mounting frame assembly 3 is larger than the area of ​​the air outlet, and the filter module 5 is installed at the air inlet. The air inlet area of ​​the mounting frame assembly 3 is large, thereby increasing the air inlet area, reducing the air flow speed, improving the ventilation efficiency, and reducing the noise.

[0053] In some embodiments, reference Figure 4 and Figure 6 In the direction from the air inlet to the air outlet of the mounting frame assembly 3, the inner cavity of the mounting frame assembly 3 includes a parallel section and a constricted section, the filter module 5 is installed in the parallel section, and the area of ​​the constricted section gradually decreases to rectify the airflow passing through the filter module 5. The setting of the constricted section enables the air conditioner to rectify the airflow after passing through the filter 51, induce the airflow to enter the heat exchanger 2 in a laminar state, reduce the influence of eddy currents, and improve the heat exchange efficiency of the heat exchanger 2.

[0054] In some embodiments, reference Figures 8 to 11 The filter module 5 includes a filter 51 and two clamping devices disposed on the upper and lower sides of the filter 51 and arranged side by side. The first ends of the two clamping devices are rotatably connected so that the second ends can be opened and closed. The two clamping devices clamp the filter 51 in the middle, so refer to Fig. 9 When the second end of the two clamping ends is opened, the filter 51 can be taken out for easy replacement, thereby meeting the needs of users to replace the filter by themselves. For example, when the filter is dirty and blocked, the controller issues a replacement reminder, and the user can open the clamping device to replace the filter by himself; for another example, when the user has special needs such as formaldehyde removal, sterilization, and deodorization, the user can replace the filter with special functions by himself.

[0055] In some embodiments, reference Fig. 9The clamping device includes a plurality of struts arranged side by side at intervals and two frames arranged at both ends of the plurality of struts. The frames include a plurality of protruding teeth. The top ends of the two protruding teeth opposite to each other on the two frames are connected to struts. The two clamping devices clamp the filter 51 in the middle to make the filter 51 corrugated. In the natural state, the filter 51 is flat. When the two clamping devices clamp and press the filter 51 in the assembled state, the filter 51 is pressed into a corrugated state, which can increase the ventilation area of ​​the filter and improve the ventilation efficiency.

[0056] According to the following Figures 1 to 11 The structure of an air conditioner according to a specific embodiment of the present invention is described in detail.

[0057] like Figure 1 As shown, the air conditioner according to the embodiment of the present invention includes a housing 10 , a fan 1 , a heat exchanger 2 , a mounting frame assembly 3 , a speed measuring module 4 and a filter module 5 .

[0058] The housing 10 has a return air port and an air outlet, and an air duct is formed between the return air port and the air outlet. The fan 1 is disposed in the housing 10 and is used to blow the return air entering the housing 10 from the return air port out from the air outlet. Figure 1 The middle arrow V shows the flow direction of the return air in the housing 10 .

[0059] The heat exchanger 2 is arranged on a side close to the return air port of the fan 1. When the air conditioner is cooling, the heat exchanger 2 acts as an evaporator, and when the air conditioner is heating, the heat exchanger 2 acts as a condenser.

[0060] The speed measuring module 4 is arranged between the filter module 5 and the heat exchanger 2. Figure 2 As shown, the speed measuring module 4 includes a wind wheel device 41, a speed sensor 42, a bolt group 43 and a mounting frame 44. The wind wheel device 41 rotates under the blowing of the return air, and the speed sensor 42 is arranged close to the wind wheel device 41 to detect the rotation speed of the wind blades of the wind wheel device 41 and indirectly detect the wind speed of the return air filtered by the filter module 5.

[0061] like Figure 3As shown, the wind wheel device 41 includes a fan blade 411, a rotating shaft 412, a gear 413, a support 414, a flat key 415, a retaining ring 416, a flat washer 417, a spring washer 418 and a nut 419. Among them, the support 414 is installed on the mounting frame 44 through a bolt group 43. The support 414 has a shaft sleeve, and the rotating shaft 412 is rotatably arranged in the shaft sleeve of the support 414. The fan blade 411 and the gear 413 are connected to the rotating shaft 412 through a flat key 415 respectively. A retaining ring 416 is arranged between the fan blade 411 and the shaft sleeve, and a retaining ring 416 is also arranged between the gear 413 and the shaft sleeve. The axial outer end of the fan blade 411 is sequentially provided with a flat washer 417, a spring washer 418 and a crown-shaped nut 419 sleeved on the rotating shaft 412, and the crown-shaped nut 419 is matched with the thread arranged at the end of the rotating shaft 412. Similarly, the axial outer end of the gear 413 has a flat washer 417 , a spring washer 418 and a nut 419 which are sleeved on the rotating shaft 412 in sequence.

[0062] The return air in the air duct of the air conditioner in this embodiment acts on the wind wheel device 41 after being filtered by the filter module 5. The fan blades 411, the rotating shaft 412 and the gear 413 on the wind wheel device 41 rotate at the same speed. Due to the distance between the tooth top and the tooth root of the gear 413 and the speed sensor 42 and the magnetic difference, a pulse signal is generated on the speed sensor 42. The controller receives the pulse signal, calculates the current average air flow speed, and compares it with the set wind speed to determine the filter blockage condition. Since the wind speed after the filter is directly measured, the influence of the intermediate links on the speed measurement accuracy is completely avoided, and the judgment is more direct and accurate.

[0063] This embodiment uses at least one set of speed measurement modules 4 to measure the air flow speed between the filter and the heat exchanger 2 in real time, automatically calculates the average value (i.e. the measured average air flow speed), and compares the obtained average value with the speed preset by the controller. When the calculated average value is less than or equal to the set wind speed corresponding to the fan frequency, it is determined that the filter is dirty and blocked, and a signal or alarm is issued to prompt the user to replace (clean) the filter. Assume that the fan frequency is f and the filter dirty and blocked speed is Vmin （f） ,Φ is the function symbol, then Vmin （f） =Φ(f), that is, set wind speed Vmin （f） is a function of the fan frequency. Assume that the wind speed measured by the i-th speed measurement module is Vi （f） , the number of speed measurement modules is n, i is a natural number (1 to n), then the measured average airflow velocity is V 平（f） =(V1(f)+V2(f)+…Vn(f)) / N, when V 平（f） ≤V min（f） , it is judged that the filter is dirty and blocked, and the user is reminded to replace (clean) the filter element.

[0064] like Figure 4As shown, the mounting frame assembly 3 of this embodiment includes an upper side plate 31, a lower side plate 32, a left side plate 33, a right side plate 34, a longitudinal guide beam 35, a transverse guide beam 36 and a stud 37. The upper side plate 31 and the lower side plate 32 are respectively located on the upper and lower sides of the air duct and are arranged oppositely. The left side plate 33 and the right side plate 34 are respectively located on the left and right sides of the air duct and are arranged oppositely. The longitudinal guide beam 35 is connected between the upper side plate 31 and the lower side plate 32, and the transverse guide beam 36 is connected between the left side plate 33 and the right side plate 34. In this embodiment, a plurality of longitudinal guide beams 35 are arranged between the upper side plate 31 and the lower side plate 32 at intervals. Reinforcement strips are also arranged on the upper side plate 31 and the lower side plate 32 of this embodiment.

[0065] Figure 5 The structure diagram of the mounting frame assembly 3 of this embodiment is shown in the longitudinal section parallel to the left side plate 33. The arrow in the figure shows the flow direction of the return air. The filter module 5 is installed at the filter installation slot A. The longitudinal guide beam 35 and the transverse guide beam 36 play the role of supporting the filter module. There are many ventilation holes on it to reduce ventilation resistance.

[0066] like Figure 6 As shown, the area of ​​the air inlet of the mounting frame assembly 3 is larger than the area of ​​the air outlet. Such a design is conducive to increasing the air inlet area of ​​the filter screen, improving ventilation efficiency, reducing wind speed and reducing noise.

[0067] The air outlet of the mounting frame assembly 3 is close to the heat exchanger 2. The longitudinal length of the air outlet of the mounting frame assembly 3 is equal to the long side dimension of the windward surface of the heat exchanger 2. Figure 5 and Figure 6 As shown, the mounting frame assembly 3 is provided with a constricted section C, the horizontal cross section of which is trapezoidal, and the length of which is in the range of 40 mm to 150 mm. This design can rectify the airflow after passing through the filter 51, so that the airflow enters the heat exchanger 2 in a laminar state, reduce eddy current loss, and improve the heat exchange efficiency of the heat exchanger 2.

[0068] At least one of the upper side plate 31, the lower side plate 32, the left side plate 33 and the right side plate 34 of the mounting frame assembly 3 is provided with one or more holes for installing the speed measuring module, and is located on the rectifying section, that is, behind the filter installation slot A. The mounting frame assembly 3 is assembled on the side plate of the heat exchanger 2 by bolts. The speed measuring module 4 is installed on the rectifying section of the mounting frame assembly 3, the wind receiving surface of the fan blade faces the airflow, and the fan blade axis is parallel to the airflow direction. The rotating axis of the wind wheel device in the speed measuring module is perpendicular to the speed sensor.

[0069] like Figure 7As shown, the lower side plate 32 of the mounting frame assembly 3 of this embodiment includes a lower side plate body 321, a rear guide edge 322, a left limiting edge 326, a block slot 323, a front limiting edge 325, a right limiting edge 327 and a disassembly and assembly clearance notch 328. Among them, the rear guide edge 322 is located at the rear side of the lower side plate body 321, the left limiting edge 326 is located on the left side of the lower side plate body 321, and the right limiting edge 327 is located on the right side of the lower side plate body 321. The lower side plate 32 includes two front limiting edges 325 located on the left and right sides respectively, and there is a gap D between the two front limiting edges 325. Figure 1 and Figure 7 The size of the gap D needs to be determined according to the long side size L of the inspection port, D<L. The left limiting edge 326 and the right limiting edge 327 are used for the left and right limiting of the filter module 5. The rear guide edge 322 and the front limiting edge 325 form an installation groove for the front and rear guiding and limiting of the filter module. The front guide edge is a discontinuous structure. The block slot 323 is used for the plugging of the block 7. This design meets the needs of the modular design of the filter and facilitates the disassembly and assembly of the filter in a confined space.

[0070] The filter screen of this embodiment adopts a modular design. Assuming that the number of filter screen modules 5 is N, the air conditioner of this embodiment includes at least two filter screen modules. Figure 1 As shown, assuming that the long side dimension of the inspection port is L and the air inlet dimension of the mounting frame assembly 3 is M, the N value is calculated according to the following formula:

[0071] N=M / L.

[0072] like Figure 7 As shown, a disassembly and assembly clearance notch 328 is also provided in the middle of the gap D of this embodiment. Figure 1 and Figure 4 As shown, the air conditioner of this embodiment further includes an inspection door 6 and two blocks 7 respectively arranged on both sides of the disassembly and assembly clearance gap 328, and the two blocks 7 are respectively inserted into the block slots 323. The air conditioner of this embodiment further includes a stud 8 inserted into the stud hole 324 of the lower side plate 32 and a butterfly nut 9 matched with the stud 8. The stud 8 is welded to the lower side plate and fastened with the butterfly nut 9 to the left and right blocks. The two blocks 7, the stud 8 and the butterfly nut 9 together play the role of limiting the filter module 5.

[0073] The method of disassembling the filter module 5 is as follows: open the inspection cover, manually loosen the butterfly nut 9, turn the left block to the horizontal position, turn the right block to the horizontal position, reach out and grab the filter module 5 located in the middle position of the mounting frame assembly, and then pull it out diagonally downward to remove the filter module 5 in the middle position. Pull the filter on the left side of the mounting frame to the right to the middle position, and then pull it diagonally downward to remove the filter module on the left. Similarly, the filter module on the right side of the mounting frame assembly can be pulled to the left to the middle position, and then pulled diagonally downward to remove the filter module on the right. When assembling, first install the left or right side, then install the middle filter module, install the filter module in the opposite steps of disassembly, and manually lock the butterfly nut. The inspection cover assembly is used for maintenance. This structure avoids the problem of having to shut down and open the panel or shell cover when removing the filter, and at the same time uses a small-sized inspection port to solve the problem of large-sized integrated filter difficult to remove.

[0074] The sizes of the filter modules 5 in this embodiment are the same and the structures of the filter modules 5 are as follows: Figures 8 to 11 The filter screen module 5 comprises two clamping devices and a filter screen 51 arranged between the two clamping devices. Specifically, the two clamping devices are a first clamping device 52 and a second clamping device 53 respectively.

[0075] like Fig. 9 As shown, the first ends of the first clamping device 52 and the second clamping device 53 are connected by a hinge 54, the first clamping device 52 is provided with an elastic lock 55, and the second clamping device 53 is provided with an elastic latch 56. When the filter module 5 is in the working state, as shown in FIG. Figure 8 As shown, the elastic lock 55 and the elastic latch 56 cooperate to connect and buckle the second ends of the first clamping device 52 and the second clamping device 53; when the filter in the filter module 5 needs to be replaced, Fig. 9 As shown, the elastic lock buckle 55 and the elastic latch 56 are opened so that the second ends of the first clamping device 52 and the second clamping device 53 are opened to facilitate taking out the filter screen 51.

[0076] like Fig.10 As shown, the first clamping device 52 includes a left square frame 522, a right square frame 521, a W-shaped frame 523, a first support rod 525 and a W-shaped frame 524. The left square frame 522, the W-shaped frame 523, the right square frame 521 and the W-shaped frame 524 are sequentially connected along the circumferential direction y to form a frame. The W-shaped frame 523 and the W-shaped frame 524 each have a plurality of convex teeth arranged in sequence, and the first support rod 525 is connected to the tops of the two convex teeth arranged opposite to each other.

[0077] like Fig.11As shown, the second clamping device 53 includes a left square frame 532, a right square frame 531, a W-shaped frame 533, a second support rod 535 and a W-shaped frame 534. The multiple first support rods 525 of the first clamping device 52 and the multiple second support rods 535 of the second clamping device 53 are staggered. Specifically, in this embodiment, the first clamping device 52 includes 12 first support rods 525, and the second clamping device 53 includes 13 second support rods 535. The first clamping device 52 and the second clamping device 53 are combined to clamp the filter screen 51 in the middle. At this time, the first support rods 525 and the second support rods 535 support and press the filter screen 51 so that the flat filter screen becomes corrugated, thereby increasing the ventilation area of ​​the filter screen and improving the ventilation efficiency.

[0078] When the filter module 5 is in working state, the first support rod 525 and the second support rod 535 are arranged vertically, so as to ensure the increase of ventilation area and prevent dust accumulation. The filter 51 is tightly attached to the W-shaped gap formed by the first clamping device 52 and the second clamping device 53. This design realizes the separation of the filter and the frame, meets the user's need to replace the filter element by himself, and does not need to replace the entire filter module, which greatly reduces the maintenance and use costs.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. An air conditioner, It is characterized in that include: A housing (10), wherein the housing (10) is provided with an air return port and an air outlet; A fan (1) is arranged in the housing (10) and is used to allow return air entering the housing (10) from the return air port to be blown out from the air outlet; A heat exchanger (2) is arranged in the housing (10) and located on the air duct between the return air port and the air outlet; a filter module (5), arranged in the housing (10) and located on a side of the heat exchanger (2) close to the return air outlet and comprising a filter (51); and a speed measuring module (4), arranged between the filter module (5) and the heat exchanger (2), and configured to measure the actual wind speed of the return air entering the housing (10) from the return air port after being filtered by the filter module (5); The air conditioner further comprises a mounting frame assembly (3) connected to the heat exchanger (2); the filter module (5) and the speed measuring module (4) are both mounted on the mounting frame assembly (3); the area of ​​the air inlet of the mounting frame assembly (3) is larger than the area of ​​the air outlet; in the direction from the air inlet to the air outlet of the mounting frame assembly (3), the inner cavity of the mounting frame assembly (3) comprises a parallel section and a constricted section; the filter module (5) is mounted on the parallel section; the area of ​​the constricted section gradually decreases so as to rectify the airflow passing through the filter module (5); and the speed measuring module (4) is mounted on the rectifying section of the mounting frame assembly (3).

2. The air conditioner according to claim 1, It is characterized in that The air conditioner further comprises a controller which is in communication with the speed measuring module (4), the controller being configured to obtain the actual wind speed from the speed measuring module (4), and to determine whether the filter (51) needs to be replaced based on the actual wind speed and a set wind speed.

3. The air conditioner according to claim 2, It is characterized in that The controller is further configured to obtain the operating frequency of the fan (1) and, based on the operating frequency, obtain a set wind speed at the operating frequency, and then determine whether the filter (51) needs to be replaced based on the actual wind speed and the set wind speed.

4. The air conditioner according to claim 2, It is characterized in that The controller is configured to issue a prompt to replace the filter (51) when the actual wind speed is less than the set wind speed.

5. The air conditioner according to claim 2, It is characterized in that The air conditioner comprises at least two speed measuring modules (4), and the controller is configured to calculate an average actual wind speed based on at least two actual wind speeds measured by the at least two speed measuring modules (4).

6. The air conditioner according to any one of claims 1 to 5, It is characterized in that The filter screen module (5) comprises a filter screen (51) and a first clamping device (52) and a second clamping device (53) which are respectively arranged on the upper and lower sides of the filter screen (51) and arranged side by side, wherein the first ends of the first clamping device (52) and the second clamping device (53) are rotatably connected so that the second ends can be opened and closed.

7. The air conditioner according to claim 6, It is characterized in that The first clamping device (52) comprises a plurality of first support rods (525) arranged side by side at intervals and two first frames arranged at both ends of the plurality of first support rods, the first frames comprising a plurality of first protruding teeth, the first support rod (525) being connected between the top ends of two opposite first protruding teeth of the two first frames, the second clamping device (53) comprising a plurality of second support rods (535) arranged side by side at intervals and two second frames arranged at both ends of the plurality of second support rods (535), the second frames comprising a plurality of second protruding teeth, the second support rod (535) being connected between the top ends of two opposite second protruding teeth of the two second frames, the plurality of first support rods (525) and the plurality of second support rods (535) being staggered so that the first clamping device (52) and the second clamping device (53) clamp the filter screen (51) in the middle and make the filter screen (51) corrugated.

8. The air conditioner according to any one of claims 1 to 5, It is characterized in that The speed measurement module (4) comprises a wind wheel device (41) and a speed sensor (42); the wind wheel device (41) comprises a fan blade (411) and a gear (413) coaxially connected to the fan blade (411); the fan blade (411) rotates under the action of airflow and drives the gear (413) to rotate; the speed sensor (42) is arranged close to the gear (413) to measure the rotation speed of the gear (413).

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