Ventilation device for elevator car

Abstract

The utility model relates to the technical field of elevator equipment, in particular to an elevator car ventilation device which is installed on the top of a car and comprises a ventilation unit and at least one ventilation hood, and the ventilation unit and the at least one ventilation hood are both installed on the top of the car. The air inlet end and the air outlet end of the ventilation hood communicate with the output end of the ventilation unit and the interior of the lift car correspondingly. Wherein a frame is fixedly connected in the air outlet end of the ventilation hood, a ventilation screen plate is rotationally connected to the outer side of the frame, a filtering piece is detachably connected to the inner side of the ventilation screen plate, the ventilation screen plate is fixed to the frame through an elastic structure at one end, and the ventilation screen plate and the frame are fixed through the elastic structure. The elastic part and the abutting part can be driven to be separated from the clamping groove by pushing and pressing the pressing part, namely, the ventilation screen plate can be rotated, and then the filtering piece can be pulled out in an extraction mode, so that dust accumulated on the surface of the filtering piece can be cleaned conveniently, or the filtering piece can be replaced conveniently.

Description

Technical Field

[0001] This utility model relates to the field of elevator equipment technology, and in particular to an elevator car ventilation and air exchange device. Background Technology

[0002] When an elevator car is in operation, the oxygen content in the air gradually decreases due to passengers' breathing, activities, and the operation of equipment inside the car, while the concentration of harmful gases such as carbon dioxide increases. The ventilation system effectively maintains fresh air inside the car by introducing fresh air and expelling stale air, thereby improving air quality.

[0003] Elevator car ventilation devices are often used in conjunction with filters to prevent external dust from entering the car. For example, Chinese Patent Publication No. CN222498296U discloses an elevator car ventilation device belonging to the field of elevator car technology. It includes a car body, a filter box at the bottom of the car body, a housing fixedly connected to the bottom of the filter box, a motor fixedly installed inside the housing, a main rotating rod fixedly connected to the output end of the motor, and a main gear fixedly connected to the surface of the main rotating rod. This invention uses a motor to drive the main rotating rod to rotate, which in turn drives the main gear and brush plate to rotate. The main gear drives the auxiliary gear to rotate, which in turn drives the auxiliary rotating rod to rotate, which in turn drives the fan blades to rotate. During rotation, the fan blades generate airflow and accelerate the airflow, thereby delivering external air into the car body, enhancing air convection within the car, improving ventilation, and preventing direct airflow onto passengers' heads, thus improving passenger comfort.

[0004] In actual operation, the connecting plate is fixed to the filter box by the clamping plate and fastening bolts, and then the filter screen is fixed in the filter box. However, considering that the dust accumulated on the surface of the filter screen needs to be replaced and cleaned after a long period of use, it is not convenient to disassemble and take out the filter screen, which may affect the normal use of the elevator. Utility Model Content

[0005] The purpose of this utility model is to solve the above-mentioned shortcomings of the existing technology, which make it inconvenient to disassemble and remove the filter screen, and to propose an elevator car ventilation and air exchange device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design an elevator car ventilation device, installed on the top of the car, including a ventilation unit and a ventilation hood. The ventilation unit and at least one ventilation hood are both installed on the top of the car. The air inlet and air outlet of the ventilation hood are respectively connected to the output end of the ventilation unit and the interior of the car.

[0008] A frame is fixedly connected inside the air outlet of the ventilation hood, a ventilation mesh is rotatably connected to the outside of the frame, a filter is detachably connected to the inside of the ventilation mesh, and the ventilation mesh is fixed to the frame by an elastic structure at one end.

[0009] Furthermore, the elastic structure includes an elastic part, the frame is rectangular, its inner wall near the outer side is recessed inward to form a relief groove, the ventilation mesh is placed in the relief groove, the bottom end of the ventilation mesh is rotatably connected to the frame, and at least one of the elastic parts is provided at the top end of the ventilation mesh.

[0010] Furthermore, one end of the elastic part is integrally formed with the top side of the ventilation mesh plate, the free end of the elastic part is bent upward into a V-shaped structure, and its free end has abutment parts on both sides, and a pressing part is located between the abutment parts on both sides.

[0011] Furthermore, the frame has a slot corresponding to the elastic part at the top of the inner wall, wherein the free end of the elastic part abuts against the frame and deforms and engages in the slot, the abutting part abuts against the inner wall of the slot, and the pressing part is placed on the outside of the slot.

[0012] Furthermore, the ventilation mesh plate has two bent portions on its inner side, which are placed in the relief groove. The filter element is a soft structure and is slidably connected between the two bent portions.

[0013] Furthermore, the bending portions on both sides form an elastic positioning portion at one end of the bending through a deformation groove. The elastic positioning portion has a limiting protrusion on the inner side of the movable end. The filter element has a limiting hole on the side of the outer edge. The limiting protrusion engages with the limiting hole through abutment deformation.

[0014] The present invention provides an elevator car ventilation device with the following advantages: The device includes a frame and a ventilation mesh plate inside the air outlet of the ventilation hood. The ventilation mesh plate is rotatably connected to the frame, and is also fixed to the frame by an elastic structure. The elastic part and the abutment part can be separated from the slot by pushing and pressing the pressing part, allowing the ventilation mesh plate to be rotated. The filter element can then be extracted for cleaning or replacement of accumulated dust on its surface. Furthermore, the filter element is fixed to the two side bends by limiting protrusions engaging with limiting holes, facilitating extraction of the filter element after opening the ventilation mesh plate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2This is a schematic diagram of the structure of the ventilation mesh panel of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the elastic positioning part of this utility model;

[0018] Figure 4 for Figure 3 A magnified structural diagram of area A;

[0019] Figure 5 This is a cross-section of the limiting protrusion of this utility model;

[0020] Figure 6 This is a cross-sectional view of the elastic structure of this utility model.

[0021] In the diagram: 1. Car; 2. Ventilation unit; 3. Ventilation hood; 4. Frame; 41. Clearance groove; 5. Ventilation mesh; 51. Bending part; 52. Deformation groove; 53. Elastic positioning part; 531. Limiting protrusion; 6. Filter element; 61. Limiting hole; 7. Elastic structure; 71. Elastic part; 72. Abutment part; 73. Pressing part; 74. Slot. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figure 1-6 An elevator car ventilation device is installed on the top of the car 1, including a ventilation unit 2 and a ventilation hood 3. The ventilation unit 2 and at least one of the ventilation hoods 3 are installed on the top of the car 1. The air inlet and air outlet of the ventilation hood 3 are respectively connected to the output end of the ventilation unit 2 and the interior of the car 1.

[0024] A frame 4 is fixedly connected inside the air outlet of the ventilation hood 3. A ventilation mesh plate 5 is rotatably connected to the outside of the frame 4. A filter element 6 is detachably connected to the inside of the ventilation mesh plate 5. The ventilation mesh plate 5 is fixed to the frame 4 through an elastic structure 7 at one end.

[0025] In some embodiments, the ventilation unit 2 is a blower, the output end of which is connected to the ventilation hood 3 to deliver air to the inside of the car 1. The air entering the inside of the car 1 can be discharged to the outside through the gap of the car door. Alternatively, a ventilation mesh 5 that communicates with the outside can be installed inside the car 1 to accelerate the ventilation efficiency.

[0026] Furthermore, the elastic structure 7 includes an elastic part 71, the frame 4 has a rectangular structure, and its inner wall near the outer side is recessed inward to form a relief groove 41. The ventilation mesh plate 5 is placed in the relief groove 41, the bottom end of the ventilation mesh plate 5 is rotatably connected to the frame 4, and the top end of the ventilation mesh plate 5 is provided with at least one of the elastic parts 71.

[0027] Furthermore, one end of the elastic part 71 is integrally formed with the top side of the ventilation mesh plate 5, the free end of the elastic part 71 is bent upward into a V-shaped structure, and its free end has abutment parts 72 on both sides, and a pressing part 73 is located between the abutment parts 72 on both sides.

[0028] More specifically, the frame 4 has a slot 74 corresponding to the elastic part 71 at the top of its inner wall. The free end of the elastic part 71 abuts against the frame 4 and is engaged in the slot 74. The abutting part 72 abuts against the inner wall of the slot 74. The pressing part 73 is placed on the outside of the slot 74.

[0029] In this embodiment, the way in which the elastic part 71 is fixed in the slot 74 in conjunction with the abutment part 72 can be referred to the fixing method of the battery cover in the prior art;

[0030] Among them, the elastic part 71 and the bending part 51 are preferably supported by materials with deformation capabilities such as rubber and plastic. The free end of the elastic part 71 abuts against the frame 4, deforms and slides. After the elastic part 71 and the abutting part 72 are both set in the slot 74, the elastic part 71 returns to its deformation. The pair of abutting parts 72 abut against the inner wall of the slot 74, and the ventilation mesh plate 5 can be fixed.

[0031] Specifically, by pushing and pressing the pressing part 73, the elastic part 71 causes the abutment part 72 to deform. When the abutment part 72 disengages from the slot 74, the ventilation mesh plate 5 can be rotated.

[0032] In general, the ventilation mesh plate 5 has two bent portions 51 on its inner side, which are placed in the relief groove 41. The filter element 6 is a soft structure and is slidably connected between the two bent portions 51.

[0033] Finally, the bending portions 51 on both sides form an elastic positioning portion 53 at one end of the bending through the deformation groove 52. The elastic positioning portion 53 is provided with a limiting protrusion 531 on the inner side of the movable end. The filter element 6 is provided with a limiting hole 61 on the side of the outer edge. The limiting protrusion 531 engages with the limiting hole 61 through abutment deformation.

[0034] In this embodiment, the filter element 6 is a filter screen, and a rubber reinforcing plate is fixedly connected to the edge of the filter screen to further improve the strength and service life of the filter screen. Of course, both the filter screen and the rubber reinforcing plate are soft structures and can be slidably connected between a pair of bent parts 51 by bending to prevent the filter element 6 from contacting the elastic part 71 when it is disassembled and assembled.

[0035] Furthermore, when the limiting protrusion 531 contacts the rubber reinforcing plate, the limiting protrusion 531 and the elastic positioning part 53 deform under the action of the deformation groove 52. After the limiting protrusion 531 is engaged in the limiting hole 61, the filter element 6 can be fixed.

[0036] Furthermore, the filter element 6 is adapted to the relief groove 41. The filter element 6 is used to filter external dust. The fixed filter element 6 facilitates the positioning of the filter element 6 during installation and avoids the filter element 6 from being unable to close the ventilation mesh plate 5 due to offset or sliding during installation.

[0037] Working method: During operation, the filter element 6 is slidably connected between a pair of bent parts 51 by bending. While the filter element 6 is sliding, its outer wall abuts against the limiting protrusion 531. When the limiting protrusion 531 is abutted, the elastic positioning part 53 deforms under the deformation groove 52. After the limiting protrusion 531 is engaged in the limiting hole 61, the filter element 6 can be fixed.

[0038] Then, the ventilation mesh 5 is driven to close by rotation. At the same time as closing, the free end of the elastic part 71 abuts against the frame 4, deforms and slides. After the elastic part 71 and the abutting part 72 are both in the slot 74, the elastic part 71 returns to its deformation, and the pair of abutting parts 72 abut against the inner wall of the slot 74, thus fixing the ventilation mesh 5.

[0039] Ideally, the ventilation unit 2, together with the ventilation hood 3, filter 6, etc., should ventilate the air inside the car 1.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A ventilation and air exchange device for an elevator car, installed on the top of the car (1), characterized in that: It includes a ventilation unit (2) and a ventilation hood (3). The ventilation unit (2) and at least one of the ventilation hoods (3) are installed on the top of the car (1). The air inlet and air outlet of the ventilation hood (3) are respectively connected to the output end of the ventilation unit (2) and the interior of the car (1). Among them, a frame (4) is fixedly connected inside the air outlet end of the ventilation hood (3), a ventilation mesh plate (5) is rotatably connected to the outside of the frame (4), a filter element (6) is detachably connected to the inside of the ventilation mesh plate (5), and the ventilation mesh plate (5) is fixed to the frame (4) through an elastic structure (7) at one end. The elastic structure (7) includes an elastic part (71), the frame (4) is rectangular, and its inner wall near the outer side is recessed to form a relief groove (41). The ventilation mesh plate (5) is placed in the relief groove (41), the bottom end of the ventilation mesh plate (5) is rotatably connected to the frame (4), and the top end of the ventilation mesh plate (5) is provided with at least one of the elastic parts (71). One end of the elastic part (71) is integrally formed with the top side of the ventilation mesh plate (5). The free end of the elastic part (71) is bent upward into a V-shaped structure, and its free end has abutment parts (72) on both sides, and a pressing part (73) is located between the abutment parts (72) on both sides.

2. An elevator car ventilation device according to claim 1, characterized in that: The frame (4) has a slot (74) on the top of the inner wall corresponding to the elastic part (71). The free end of the elastic part (71) abuts against the frame (4) and deforms and engages in the slot (74). The abutting part (72) abuts against the inner wall of the slot (74). The pressing part (73) is placed on the outside of the slot (74).

3. The elevator car ventilation device according to claim 1, characterized in that: The ventilation mesh plate (5) has two bent parts (51) on the inner side. The bent parts (51) are placed in the relief groove (41). The filter element (6) is a soft structure and is slidably connected between the two bent parts (51).

4. An elevator car ventilation device according to claim 3, characterized in that: The bending portions (51) on both sides form an elastic positioning portion (53) at one end of the bending through a deformation groove (52). The elastic positioning portion (53) has a limiting protrusion (531) on the inner side of the movable end. The filter element (6) has a limiting hole (61) on the side of the outer edge. The limiting protrusion (531) engages with the limiting hole (61) through abutment deformation.

Images