An air conditioner indoor unit

Abstract

An air conditioner indoor unit comprises a fan and an evaporator, characterized in that it further comprises a water pan assembly arranged at the air inlet side of the fan and detachably connected with the fan, the water pan assembly comprises a water pan lower cover and a water pan upper cover which are assembled with each other, the water pan lower cover and the water pan upper cover enclose an air inlet channel which is in communication with the air inlet of the fan, and the evaporator is arranged in the air inlet channel and detachably mounted on the water pan assembly. The water pan assembly of the air conditioner indoor unit is detachably mounted at the air inlet side of the fan, the water pan lower cover and the water pan upper cover of the water pan assembly enclose an air inlet channel which is in communication with the air inlet of the fan, and the evaporator is arranged in the air inlet channel and detachably mounted on the water pan assembly. The air conditioner indoor unit has simple structure, adopts modular mounting structure, and is very convenient to mount and dismount, and has high assembly efficiency. In addition, when the filter screen is mounted, the filter screen is inserted into the air inlet and fixed by the buckle, and when the filter screen is dismounted, the filter screen is pulled out of the air inlet, so that the mounting and dismounting are very convenient.

Description

TECHNICAL FIELD

[0001] The application relates to an indoor unit of an air conditioner. BACKGROUND

[0002] With the improvement of the quality of life, the air conditioner has become an indispensable electrical equipment for adjusting the temperature, humidity and purity of indoor air in people's daily life. In order to adjust the indoor air in the kitchen, an air conditioner type oil fume exhaust hood is invented, the indoor unit of the air conditioner is integrated on the oil fume exhaust hood, the indoor unit of the air conditioner comprises a fan and an evaporator, when air enters the indoor unit of the air conditioner, the air flows through the evaporator and is sent into the kitchen through the air outlet of the fan to improve the cooking comfort. The mounting structure of the components of the existing indoor unit of the air conditioner is relatively complex, and the whole cannot be disassembled and mounted, the mounting is not convenient and rapid, and the assembly efficiency is low. In addition, the existing indoor unit of the air conditioner does not set a condensation prevention structure, and when the air conditioner works, condensate water condensation phenomenon occurs on the outer surface of the indoor unit, which reduces the reliability of the indoor unit.

[0003] The indoor unit of the existing air conditioner generally adopts an air duct structure with air inlet from the top and air outlet from the bottom, and a filter screen semi-surrounds a heat exchanger to filter the air before heat exchange. The top of a face frame of the air conditioner indoor unit is provided with an air inlet grille, a mounting hole is formed in the front part, a panel is covered on the mounting hole, a part of the filter screen is inserted between the air inlet grille and the top of the heat exchanger from the mounting hole, another part covers the front part of the heat exchanger and is located on the inner side of the panel, and the lower part of the part is clamped with the lower edge of the mounting hole. The air conditioner indoor unit adopts the air duct structure with air inlet from the top and air outlet from the bottom, which is not conducive to saving the space of the air conditioner indoor unit, and the airflow is also easy to be polluted by oil fume. Moreover, when the filter screen is disassembled and assembled, not only the filter screen needs to be bent to realize the clamping, but also the panel connected with the face frame by buckling needs to be opened, so that the disassembly and assembly process is very inconvenient.

[0004] In addition, the current solution to the air leakage problem of the indoor unit of the air conditioner generally uses a gasket sealing method, and the sealing method has relatively high cost and high requirement for installation. If the gasket is not installed in place, the air leakage phenomenon is easy to occur. SUMMARY

[0005] The first technical problem to be solved by the application is to provide an air conditioner indoor unit with simple structure, reliable and convenient assembly and disassembly according to the above-mentioned prior art status.

[0006] The second technical problem to be solved by the application is to provide an air conditioner indoor unit with good air leakage prevention effect according to the above-mentioned prior art status.

[0007] The third technical problem to be solved by the application is to provide an air conditioner indoor unit with convenient filter screen installation and disassembly, reliable and firm installation according to the above-mentioned prior art status.

[0008] The technical scheme adopted by the present application to solve the first technical problem is: the air conditioner indoor unit comprises a fan and an evaporator, and is characterized in that: further comprising a water pan assembly arranged at the air inlet side of the fan and detachably connected with the fan, the water pan assembly comprises a water pan lower cover and a water pan upper cover which are assembled with each other, the water pan lower cover and the water pan upper cover enclose an air inlet channel which is in communication with the air inlet of the fan, and the evaporator is arranged in the air inlet channel and detachably mounted on the water pan assembly.

[0009] The water pan lower cover and the water pan upper cover each have inclined sides which cooperate with each other, the inclined side of the water pan lower cover is opposite to the inclined side of the water pan upper cover to make the water pan assembly assembled into a box-shaped structure, the top of the water pan upper cover is provided with an air inlet of the air inlet channel, the side wall of the water pan lower cover is provided with an air outlet of the air inlet channel, the side of the fan is provided with the air inlet of the fan, the air inlet of the fan is opposite to the air outlet of the air inlet channel, and the top of the fan is provided with a fan air outlet.

[0010] The evaporator is arranged obliquely relative to a vertical plane, and the evaporator is mounted on the inclined sides of the water pan lower cover and the water pan upper cover.

[0011] Preferably, the fan comprises a volute, an impeller and a motor, the impeller is mounted in the volute and rotates under the drive of the motor, and the volute is detachably connected with the water pan assembly.

[0012] Further preferably, the volute comprises a volute front cover and a volute rear cover which are assembled with each other, and the volute front cover is detachably connected with the water pan assembly.

[0013] In order to quickly and accurately mount the volute front cover and the volute rear cover, the volute front cover and the volute rear cover are provided with cooperating positioning structures and cooperating locking structures.

[0014] The positioning structures can be various, and preferably, the positioning structures comprise a stop structure and / or a buckle structure.

[0015] The locking structures can be various, and preferably, the locking structures comprise a stud limiting groove and a stud which is inserted into the stud limiting groove and fixedly connected through a screw, one of the stud limiting groove and the stud is arranged on the volute front cover, and the other is arranged on the volute rear cover.

[0016] In order to positionally mount the volute front cover on the water pan lower cover, the side wall of the water pan lower cover is provided with a positioning column, and the volute front cover is provided with a positioning hole which cooperates with the positioning column.

[0017] The technical scheme adopted by the present application to solve the second technical problem is that the water pan lower cover of the air conditioner indoor unit and the volute front cover are positioned and matched through a positioning buckle and are tightly matched through a pressing buckle.

[0018] In order to make the sealing effect better, a sealing rib is arranged on the periphery of the air inlet of the volute front cover and extends to the water pan lower cover side, and the water pan lower cover is pressed on the sealing rib.

[0019] In order to avoid the condensate dew phenomenon of the condensate water on the outer wall of the volute, a first heat insulation member is arranged in the volute, which is shaped to match the volute. The heat insulation member is usually made of foam material.

[0020] In order to avoid the condensate dew phenomenon of the condensate water on the outer surface of the water pan, a second heat insulation member is arranged in the air inlet passage. The heat insulation member is usually made of foam material.

[0021] In order to make the condensate water flow out of the water pan lower cover, a water outlet hole is formed in the bottom of the water pan lower cover.

[0022] In order to make the air outlet of the indoor unit blow clean air, the top of the water pan upper cover forms an air inlet of an air inlet passage, and a filter screen is arranged in the air inlet.

[0023] The technical solution adopted by the present application to solve the third technical problem is that the air inlet of the air inlet passage of the indoor unit of the air conditioner is in a square structure, and along the insertion direction of the filter screen, the edges on the left and right sides of the air inlet extend upward to have first buckles, and the edge on the front side of the air inlet extends upward to have a second buckle, and the filter screen is fixed by the first buckles and the second buckle.

[0024] In order to make the filter screen mounting structure more firm, the first buckles on the left side and the first buckles on the right side are at least two and are distributed in front of and behind along the insertion direction of the filter screen.

[0025] In order to prevent the filter screen from shaking left and right after being installed, the first buckle includes a first buckle wall extending upward from the edge of the air inlet and a first hook extending inward from the top of the first buckle wall after being bent, and the left and right outer walls of the filter screen abut against the corresponding first buckle walls, and the top of the left and right sides of the filter screen abuts against the first hook.

[0026] In order to make the filter screen tighter and tighter during pushing, the thickness of the first buckle wall gradually increases along the insertion direction of the filter screen.

[0027] In order to make the filter screen tighter and tighter during pushing, the first hook extends obliquely downward along the insertion direction of the filter screen.

[0028] Further preferably, the second buckle is at least two and is distributed in front of and behind along the insertion direction of the filter screen.

[0029] To prevent the filter from lifting up after being pushed into place, the second buckle includes a second buckle wall extending upward from the front edge of the air inlet and a second hook extending backward from the top of the second buckle wall, and the second hook extends obliquely upward from front to back.

[0030] To prevent the filter from moving left or right during insertion, guide walls extend upwards along both the left and right edges of the air inlet. These guide walls then limit the filter's movement, allowing for smooth insertion.

[0031] To further facilitate smooth filter insertion, a chamfered structure is provided at the rear of the left edge and / or the rear of the right edge of the air inlet to guide filter insertion. With the chamfered structure, the filter will not collide with the edge of the air inlet during insertion, ensuring smooth and complete insertion.

[0032] Compared with existing technologies, the advantages of this invention are as follows: The water tray assembly of the indoor air conditioner unit is detachably installed on the air inlet side of the fan. The lower and upper covers of the water tray assembly form an air inlet channel communicating with the air inlet of the fan. The evaporator is located within the air inlet channel and is detachably installed on the water tray assembly. Therefore, the indoor air conditioner unit has a simple structure, adopts a modular installation structure, and is very convenient to install and disassemble, resulting in high assembly efficiency. The sealing effect between the fan casing and the water tray assembly is good, effectively preventing air leakage. Furthermore, when installing the filter, it is inserted above the air inlet and secured by clips. When removing the filter, it is simply pulled out from the air inlet. Both installation and removal are very convenient, and the clips ensure that the filter will not loosen after installation, resulting in a very secure installation. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention;

[0034] Figure 2 for Figure 1 The diagram shows the structure of the indoor unit of the air conditioner from another angle.

[0035] Figure 3 for Figure 1 A schematic diagram of the indoor unit of the air conditioner from another different angle is shown.

[0036] Figure 4 for Figure 1 An exploded view of the indoor unit of the air conditioner shown.

[0037] Figure 5 for Figure 1 Another exploded view of the indoor unit of the air conditioner shown;

[0038] Figure 6 for Figure 1 Another exploded view of the indoor unit of the air conditioner shown;

[0039] Figure 7 As Figure 1 the sectional view of the air conditioner indoor unit structure shown in the figure;

[0040] Figure 8 As Figure 1 the filter screen installation structure diagram of the air conditioner indoor unit shown in the figure;

[0041] Figure 9 As the structure diagram of the upper cover of the water pan of the embodiment of the application;

[0042] Figure 10 As Figure 9 the partial structure diagram of the upper cover of the water pan shown in the figure;

[0043] Figure 11 As Figure 10 the enlarged diagram of part A;

[0044] Figure 12 As Figure 10 the enlarged diagram of part B;

[0045] Figure 13 As Figure 9 the partial structure diagram of the upper cover of the water pan shown in the figure from another angle;

[0046] Figure 14 As Figure 13 the enlarged diagram of part C. DETAILED DESCRIPTION

[0047] The application will be described in further detail below with reference to the embodiments of the drawings.

[0048] As Figures 1 to 7 shown, the air conditioner indoor unit of the embodiment includes fan 1, evaporator 2, water pan assembly, filter screen 8 and other main components. Among them, the fan 1 adopts centrifugal fan, the fan 1 includes volute 11, impeller 12 and motor 13, the impeller 12 is installed inside the volute 11 and rotates under the drive of the motor 13, the fan air inlet 14 is located at the side of the fan 1, the fan air outlet 15 is located at the top of the fan 1, and the fan air outlet 15 constitutes the air outlet of the air conditioner indoor unit.

[0049] The water pan assembly is located at the air inlet side of the fan 1 and can be detachably connected to the volute 11 of the fan 1. The water pan assembly specifically includes water pan lower cover 3 and water pan upper cover 4 assembled on the water pan lower cover, and the water pan lower cover 3 and the water pan upper cover 4 enclose the air inlet channel 5 which is in communication with the fan air inlet 14. The water pan upper cover 4 is provided with an air inlet 51 of the air inlet channel 5 at the top, and the side wall of the water pan lower cover 3 towards the fan 1 is provided with an air outlet 52 of the air inlet channel 5, and the air outlet 52 of the air inlet channel 5 is opposite to the fan air inlet 14.

[0050] The lower cover 3 and the upper cover 4 of the water pan have mutually matched inclined sides, the inclined side of the lower cover 3 is opposite to the inclined side of the upper cover 4, and the water pan assembly is assembled into a box-shaped structure, and the inside of the box-shaped structure forms the air inlet channel 5. The evaporator 2 is located in the air inlet channel 5 and is arranged obliquely relative to the vertical plane, and the evaporator 2 is detachably installed on the inclined sides of the lower cover 3 and the upper cover 4 of the water pan.

[0051] The volute 11 of the embodiment includes a volute front cover 111 and a volute rear cover 112 assembled with each other, and the volute front cover 111 and the volute rear cover 112 are provided with mutually matched positioning structures and locking structures. In the embodiment, the positioning structures include a stop structure 16 and a buckle structure 17, and the stop structure 16 and the buckle structure 17 are both arranged at intervals along the circumference of the volute 11. The stop structure 16 and the buckle structure 17 are conventional assembly structures, and details are not described herein. The locking structure of the embodiment includes a stud limiting groove 18 and a stud 19 inserted into the stud limiting groove and fixedly connected by a screw 191. In the embodiment, the stud limiting groove 18 is arranged on the volute rear cover 112, and the stud 19 is arranged on the volute front cover 111. During installation, the stud 18 is inserted into the stud limiting groove 18 and fixedly connected by the screw 191.

[0052] The volute front cover 111 of the fan 1 is detachably connected with the water pan assembly. Specifically, the two opposite side walls of the lower cover 3 of the water pan are provided with positioning columns 31, and the volute front cover 111 is provided with positioning holes 113 matched with the positioning columns 31, so as to facilitate installation and disassembly. During installation, the positioning columns 31 are inserted into the corresponding mounting holes 113, so as to realize the installation and positioning of the volute front cover 111 and the lower cover 3 of the water pan. In addition, the volute front cover 111 and the lower cover 3 of the water pan are further fixedly connected by the screw 191.

[0053] After the lower cover 3 of the water pan and the volute front cover 111 are fixed, the sealing is not good and air leakage is likely to occur, which further leads to the loss of air volume of the indoor unit. In the embodiment, the lower cover 3 of the water pan and the volute front cover 111 are positioned and matched by the positioning buckle 61, and the positioning buckle 61 has a guiding effect, so that the lower cover 3 of the water pan and the volute front cover 111 are close to each other. The lower cover 3 of the water pan and the volute front cover 111 are further pressed and matched by the pressing buckle 62, so as to realize sealing. In addition, in order to further prevent air leakage, a sealing rib 114 is protruded from the volute front cover 111 to the side of the lower cover of the water pan at the periphery of the air inlet, and the lower cover 3 of the water pan is pressed and attached to the sealing rib 114. The sealing rib 114 of the embodiment is an integral molding structure with the volute front cover 111. Compared with the traditional gasket installation structure, the structure is simpler, the assembly is more convenient, and the sealing effect is better.

[0054] When the air conditioner is started, the surface temperature of the evaporator 2 of the air conditioner indoor unit is low, causing the temperature of the outer surface of the air conditioner indoor unit to be relatively low, resulting in the phenomenon of condensate dew on the outer surface of the air conditioner indoor unit. In order to solve this problem, a first heat insulation and heat preservation part 71 is installed inside the volute 11, and a second heat insulation and heat preservation part 72 is installed inside the air inlet channel 5. In the embodiment, the first heat insulation and heat preservation part 71 adopts a foam volute, which is shaped to match the volute 11 and is installed on the inner wall of the volute 11, so as to avoid the phenomenon of condensate dew on the outer surface of the volute 11. The second heat insulation and heat preservation part 72 adopts a foam water collecting box, which is shaped to match the water collecting tray lower cover 3, so as to avoid the phenomenon of condensate dew on the outer surface of the water collecting tray assembly. In addition, the condensate water condensed on the surface of the evaporator 2 will drip into the water collecting tray lower cover 3, and a water outlet hole 32 is arranged at the bottom of the water collecting tray lower cover 3, so as to facilitate the discharge of the condensate water.

[0055] As shown in Figures 8 to 14 , the filter screen 8 is inserted above the air inlet 51 of the air inlet channel 5 along the horizontal direction. The air inlet 51 has a square structure, and along the insertion direction of the filter screen 8, the edges on the left and right sides of the air inlet 51 extend upward to form first buckles 41, and the edge on the front side of the air inlet 51 extends upward to form second buckles 42. The filter screen 8 is limited and fixed by the first buckles 41 and the second buckles 42, which is convenient for replacement in the later period. The external air enters the air inlet channel 5 after passing through the filter screen 8, so that the fan air outlet 15 blows clean air.

[0056] In the embodiment, the first buckles 41 on the left and the first buckles 41 on the right are both three and are spaced apart along the front and back directions. The second buckles 42 are arranged on the front edge of the air inlet 51 of the air inlet channel 5. In the embodiment, the second buckles 42 are two and are spaced apart along the left and right directions.

[0057] The first buckle 41 includes a first buckle wall 411 extending upward from the edge of the air inlet 51 and a first clamping hook 412 extending inward from the top of the first buckle wall. The thickness of the first buckle wall 411 gradually increases along the insertion direction of the filter screen 8, and the front and back thickness difference of the first buckle wall 411 is represented by d, as shown in Figure 14 . The first clamping hook 412 extends obliquely downward along the insertion direction of the filter screen 8, and the inner surface of the first clamping hook 412 forms an angle β with the horizontal plane, as shown in Figure 12 . The existence of the above thickness difference d and the angle β can facilitate the forward pushing of the filter screen 8, and the filter screen 8 is pushed tighter and tighter during the pushing process, which can prevent the filter screen 8 from loosening.

[0058] The second buckle 42 includes a second buckle wall 421 extending upward from the front side edge of the air inlet 51 and a second clamping hook 422 extending from the top of the buckle wall to the rear side, and the second clamping hook 422 extends obliquely upward from front to back, and the inner surface of the second buckle forms an angle α with the horizontal plane, as shown in Figure 11After the angle α is set, the filter screen 8 can be prevented from being pushed up after being inserted into place.

[0059] In addition, the filter screen 8 can be smoothly inserted along the air inlet 51 by the following installation structure. As shown in Figure 9 the left and right edges of the air inlet 51 are provided with guide walls 43 extending upward. In this embodiment, the guide walls 43 are provided at the front of the left and right edges of the air inlet 51 and between the adjacent first buckles 41. During the insertion process, the left and right sides of the filter screen 8 are limited by the corresponding guide walls, so that the filter screen 8 can be smoothly inserted. In addition, a guide corner structure 44 is provided at the rear of the left edge of the air inlet 51 and / or the rear of the right edge of the air inlet 51 to guide the insertion of the filter screen 8. After the guide corner structure 44 is provided, the filter screen 8 will not collide with the edges of the air inlet 51 during insertion, ensuring that it can be smoothly installed into place.

Claims

1. An indoor unit for an air conditioner, comprising a fan (1) and an evaporator (2), characterized in that: It also includes a water receiving tray assembly located on the air inlet side of the fan (1) and detachably connected to the fan. The water receiving tray assembly includes a lower water receiving tray cover (3) and an upper water receiving tray cover (4) that are assembled together. The lower water receiving tray cover (3) and the upper water receiving tray cover (4) form an air inlet channel (5) that communicates with the air inlet (14) of the fan. The evaporator (2) is located in the air inlet channel (5) and detachably installed on the water receiving tray assembly. The lower water receiving tray cover (3) and the upper water receiving tray cover (4) both have mutually cooperating inclined sides. The inclined side of the lower water receiving tray cover (3) and the inclined side of the upper water receiving tray cover (4) are aligned to form a box-shaped structure for assembling the water receiving tray assembly. The top of the upper water receiving tray cover (4) is provided with the air inlet channel (5). The air inlet (51) of the air inlet channel (5) is provided on the side wall of the lower cover (3) of the water tray, the air outlet (52) of the air inlet channel (5) is provided on the side of the fan, the fan inlet (14) is provided on the side of the fan, the fan inlet (14) is directly opposite the air outlet (52) of the air inlet channel, the fan outlet (15) is provided on the top of the fan (1), the evaporator (2) is inclined relative to the vertical plane, and the evaporator (2) is installed on the inclined side of the lower cover (3) and the upper cover (4) of the water tray, the bottom of the lower cover (3) of the water tray has a water outlet hole (32), the top of the upper cover (4) of the water tray forms the air inlet (51) of the air inlet channel (5), and a filter screen (8) is installed in the air inlet (51).

2. The indoor unit of the air conditioner according to claim 1, characterized in that: The fan (1) includes a volute (11), an impeller (12) and a motor (13). The impeller (12) is installed inside the volute (11) and rotates under the drive of the motor (13). The volute (11) is detachably connected to the water receiving tray assembly.

3. The indoor unit of the air conditioner according to claim 2, characterized in that: The volute (11) includes a front cover (111) and a rear cover (112) that are assembled together, and the front cover (111) is detachably connected to the water receiving tray assembly.

4. The indoor unit of the air conditioner according to claim 3, characterized in that: The front cover (111) and the rear cover (112) of the volute are provided with a positioning structure and a locking structure that cooperate with each other.

5. The indoor unit of the air conditioner according to claim 4, characterized in that: The positioning structure includes a stop structure (16) and / or a snap-fit ​​structure (17).

6. The indoor unit of the air conditioner according to claim 4, characterized in that: The locking structure includes a stud limiting groove (18) and a stud (19) inserted into the stud limiting groove and fixedly connected by screws. One of the stud limiting groove (18) and the stud (19) is provided on the front cover (111) of the volute and the other is provided on the rear cover (112) of the volute.

7. The indoor unit of the air conditioner according to claim 3, characterized in that: The lower cover (3) of the water receiving tray is provided with a positioning post (31) on its side wall, and the front cover (111) of the volute is provided with a positioning hole (113) that cooperates with the positioning post (31).

8. The indoor unit of the air conditioner according to claim 3, characterized in that: The water receiving tray lower cover (3) and the volute front cover (111) are positioned and engaged by positioning buckle (61) and engaged by pressing buckle (62).

9. The indoor unit of an air conditioner according to claim 8, characterized in that: A sealing rib (114) is provided around the air inlet of the front cover (111) of the volute and protrudes towards the lower cover of the water tray. The lower cover (3) of the water tray is pressed against the sealing rib (114).

10. The indoor unit of the air conditioner according to claim 2, characterized in that: A first thermal insulation component (71) with a shape adapted to the volute is installed inside the volute (11).

11. The indoor unit of an air conditioner according to claim 1, characterized in that: A second thermal insulation component (72) is installed inside the air inlet channel (5).

12. The indoor unit of the air conditioner according to claim 1, characterized in that: The air inlet (51) has a square structure. Along the direction of filter insertion, the edges on the left and right sides of the air inlet (51) extend upward with a first buckle (41), and the edge on the front side of the air inlet (51) extends upward with a second buckle (42). The filter (8) is limited and fixed by the first buckle (41) and the second buckle (42).

13. The indoor unit of the air conditioner according to claim 12, characterized in that: The first buckle (41) includes a first buckle wall (411) extending upward from the edge of the air inlet (51) and a first hook (412) extending inward after being bent from the top of the first buckle wall. The left and right outer walls of the filter (8) abut against the corresponding first buckle wall (411), and the tops of the left and right sides of the filter (8) abut against the first hook (412).

14. The indoor unit of the air conditioner according to claim 13, characterized in that: The thickness of the first snap-fit ​​wall (411) gradually increases along the insertion direction of the filter screen (8).

15. The indoor unit of the air conditioner according to claim 13, characterized in that: The first hook (412) extends obliquely downward along the insertion direction of the filter (8).

16. The indoor unit of an air conditioner according to claim 13, characterized in that: The second buckle (42) includes a second buckle wall (421) extending upward from the front edge of the air inlet (51) and a second hook (422) extending backward after being bent from the top of the second buckle wall, and the second hook (422) extends obliquely upward from front to back.

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