Ventilation device

Abstract

The utility model relates to a ventilation device which comprises an installation box, an air inlet box, an air outlet box and a fan assembly, the air inlet box and the air outlet box are installed on the top of the installation box in parallel, and the air inlet box is communicated with the installation box. An air inlet is formed in the side wall of the air inlet box, an air outlet is formed in the side wall of the air outlet box, and the side wall, provided with the air inlet, of the air inlet box is opposite to the side wall, provided with the air outlet, of the air outlet box; the fan assembly is fixed in the mounting box; the fan assembly comprises a double-head motor and at least two air blowing mechanisms; the at least two air blowing mechanisms are symmetrically mounted on the two sides of the double-end motor and are used for communicating the mounting box and the air outlet box; according to the ventilation device, the impeller and the shell are precisely machined, so that the efficiency of a main fan of the central air conditioner can be greatly improved when the ventilation device is applied to the central air conditioner.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation devices, in particular to a ventilation device. Background Art

[0002] A ventilation device is a device used for exchanging air flow inside and outside air conditioning and heating equipment. Existing ventilation devices achieve air flow exchange by installing a motor and an impeller inside. However, the existing ventilation devices are limited by the impeller structure, which results in that they can only take in air from the side and exhaust air in the forward direction, that is, the air inlet direction and the air outlet direction cannot be kept in the same direction. Utility Model Content

[0003] In view of this, the utility model provides a ventilation device for solving the problem that the air inlet and outlet directions of the ventilation device in the prior art cannot be kept in the same direction.

[0004] In order to achieve one, part or all of the above purposes or other purposes, the utility model proposes:

[0005] A ventilation device comprises an installation box, an air inlet box, an air outlet box and a fan assembly, wherein the air inlet box and the air outlet box are installed in parallel on the top of the installation box, and the air inlet box is connected to the installation box; the side wall of the air inlet box is provided with an air inlet, the side wall of the air outlet box is provided with an air outlet, and the side wall of the air inlet box provided with the air inlet is arranged opposite to the side wall of the air outlet box provided with the air outlet;

[0006] The fan assembly is fixed in the installation box; the fan assembly includes a double-headed motor and at least two blowing mechanisms; at least two of the blowing mechanisms are symmetrically installed on both sides of the double-headed motor, and at least two of the blowing mechanisms are used to connect the installation box and the air outlet box.

[0007] Furthermore, the air blowing mechanism comprises an outer guide shell and an outer impeller, and the outer guide shell is provided with an outer air inlet hole for connecting to the installation box and an outer guide hole for connecting to the air outlet box;

[0008] The two output shafts of the double-headed motor are respectively connected to the blowing mechanisms on both sides. The output shaft of the double-headed motor extends into the outer guide shell and is coaxially arranged with the outer air inlet hole. The outer impeller is arranged in the outer guide shell and is mounted on the output shaft of the double-headed motor.

[0009] Furthermore, the air blowing mechanism further comprises an inner guide shell and an inner impeller; the inner guide shell is provided with an inner air inlet hole connected to the mounting box and an inner guide hole for connecting to the air outlet box;

[0010] The inner guide shell is arranged on the inner side of the outer guide shell, the outer air inlet hole and the inner air inlet hole are in opposite directions, and the inner impeller is arranged in the inner guide shell and sleeved on the output shaft of the double-headed motor.

[0011] Furthermore, the blowing mechanism also includes a partition, which is arranged between the inner guide shell and the outer guide shell, and is used to separate the inner cavity of the inner guide shell and the inner cavity of the outer guide shell. The partition is provided with a avoidance opening, and the inner impeller and the outer impeller are coaxially provided with connecting columns on the side facing the partition, and the facing ends of the connecting columns are provided with tooth grooves along the circumferential direction, and the two connecting columns are inserted into the avoidance opening and meshed through the tooth grooves.

[0012] Furthermore, the fan assembly also includes a flow tube, both ends of which are respectively connected to the inner guide shells on both sides, and are coaxially arranged with the double-headed motor, and the inner wall of the flow tube and the outer wall of the double-headed motor form a flow cavity, and the flow cavity is respectively connected to the inner air inlet holes on both sides; a plurality of flow holes are provided on the tube wall of the flow tube.

[0013] Furthermore, the diameter of the middle portion of the flow tube is larger than the diameters of the two sides of the flow tube, and a plurality of the flow holes are opened in the middle portion of the flow tube.

[0014] Furthermore, the fan assembly also includes a support frame, which is fixed on the bottom wall of the installation box, and the support frame is respectively connected to at least two of the blowing mechanisms.

[0015] Furthermore, the inner guide casing and the outer guide casing are both volute casings.

[0016] Furthermore, the inner impeller and the outer impeller are both made of aluminum.

[0017] Furthermore, both the inner impeller and the outer impeller are three-dimensional flow impellers.

[0018] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0019] The ventilation device is configured by placing a fan assembly in an installation box to form an airflow transition chamber by the installation box, and using an air inlet box arranged on the top of the installation box as an airflow input chamber and an air outlet box as an airflow output chamber, thereby enabling openings to be opened on different side walls of the air inlet box and the air outlet box to achieve different or same air inlet and outlet directions. In the present embodiment, the side wall of the air inlet box provided with an air inlet and the side wall of the air outlet box provided with an air outlet are arranged relative to each other, thereby enabling the air inlet direction and the air outlet direction of the ventilation device to be consistent with each other, thereby solving the problem that the air inlet direction and the air outlet direction of the traditional ventilation device cannot be kept in the same direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the overall structure of a ventilation device in one of the embodiments of the present application;

[0022] Figure 2 This is an exploded view of the overall structure of a ventilation device in one embodiment of the present application;

[0023] Figure 3 This is a schematic diagram of the structure of a fan assembly of a ventilation device in one of the embodiments of the present application;

[0024] Figure 4 An exploded view of the fan assembly structure of a ventilation device in one of the embodiments of the present application;

[0025] Figure 5 A cross-sectional view of the fan assembly structure of a ventilation device in one embodiment of the present application;

[0026] Figure 6 This is a schematic diagram of the outer impeller structure of a ventilation device in one of the embodiments of the present application.

[0027] Reference numerals:

[0028] 1 installation box, 2 air inlet box, 20 air inlet, 3 air outlet box, 30 air outlet, 4 fan assembly, 40 double-head motor, 41 blowing mechanism, 42 outer guide shell, 420 outer air inlet hole, 421 outer guide hole, 43 outer impeller, 44 inner guide shell, 440 inner air inlet hole, 441 inner guide hole, 45 inner impeller, 435 tooth groove, 46 partition, 460 avoidance, 47 flow pipe, 470 flow cavity, 471 flow hole, 48 support frame. DETAILED DESCRIPTION

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present invention; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present invention or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0030] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0031] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0032] See attached Figure 1 - Attachment Figure 6 The present embodiment discloses a ventilation device, which includes a fan assembly 4, an installation box 1, an air inlet box 2 and an air outlet box 3, the air inlet box 2 and the air outlet box 3 are installed in parallel on the top of the installation box 1, and the air inlet box 2 is connected to the installation box 1; the side wall of the air inlet box 2 is provided with an air inlet 20, the side wall of the air outlet box 3 is provided with an air outlet 30, and the side wall of the air inlet box 2 provided with the air inlet 20 is arranged opposite to the side wall of the air outlet box 3 provided with the air outlet 30; the fan assembly 4 is fixed in the installation box 1; the fan assembly 4 includes a double-headed motor 40 and at least two blowing mechanisms 41; the at least two blowing mechanisms 41 are symmetrically installed on both sides of the double-headed motor 40, and the at least two blowing mechanisms 41 are used to connect the installation box 1 and the air outlet box 3.

[0033] Specifically, by arranging the fan assembly 4 in the installation box 1, an air flow transition chamber is formed by the installation box 1, and the air inlet box 2 arranged on the top of the installation box 1 is used as the air flow input chamber and the air outlet box 3 is used as the air flow output chamber, so that openings are opened on different side walls of the air inlet box 2 and the air outlet box 3 to achieve different or same air inlet and outlet directions. In the present embodiment, the side wall of the air inlet box 2 provided with the air inlet 20 and the side wall of the air outlet box 3 provided with the air outlet 30 are arranged opposite to each other, so that the air inlet direction and the air outlet direction of the ventilation device are consistent; in other embodiments, the air inlet 20 can be set on any side wall of the air inlet box 2 and the air outlet 30 can be set on any side wall of the air outlet box 3 according to actual needs. The air inlet and outlet directions of the ventilation device can be adjusted by any side wall of the ventilation device. For example, the air inlet direction and the air outlet direction are arranged with horizontal planes perpendicular to each other, vertical planes perpendicular to each other, the air inlet direction and the air outlet direction are opposite to each other, etc. The shapes of the air inlet 20 and the air outlet 30 can be set according to the actual connected equipment; it should also be noted that the number of the blowing mechanisms 41 can be two, four, etc., and they can be symmetrically installed on the two output shafts of the double-headed motor 40. This embodiment is explained with two blowing mechanisms 41 installed on the two output shafts of the double-headed motor 40. By driving multiple blowing mechanisms 41 simultaneously by a single motor, the power consumption and volume of the ventilation device can be reduced, thereby reducing production costs. In this embodiment, the double-headed motor 40 can be a double-headed permanent magnet motor, a double-headed magnetic levitation centrifugal motor, or a double-headed air levitation motor. A vector inverter can also be provided in the fan assembly 4 to be electrically connected to the double-headed motor 40. The double-headed motor 40 is controlled and operated by the vector inverter. The torque vector of the double-headed motor 40 can be controlled so as to make efficient adjustments according to the actual needs of the customer, so that the double-headed motor 40 can maintain the highest efficiency when working in different air volume and pressure periods.

[0034] See attached Figure 3 - Attachment Figure 5The air blowing mechanism 41 includes an outer guide shell 42, an outer impeller 43, an inner guide shell 44 and an inner impeller 45. The outer guide shell 42 is provided with an outer air inlet hole 420 for connecting to the installation box 1 and an outer guide hole 421 for connecting to the air outlet box 3; the inner guide shell 44 is provided with an inner air inlet hole 440 for connecting to the installation box 1 and an inner guide hole 441 for connecting to the air outlet box 3; the two output shafts of the double-headed motor 40 are respectively connected to the air blowers on both sides. Mechanism 41, the output shaft of the double-headed motor 40 extends into the outer guide shell 42 and is coaxially arranged with the outer air inlet hole 420, the outer impeller 43 is arranged in the outer guide shell 42, and is sleeved on the output shaft of the double-headed motor 40; the inner guide shell 44 is arranged on the inner side of the outer guide shell 42, the outer air inlet hole 420 and the inner air inlet hole 440 are in opposite directions, the inner impeller 45 is arranged in the inner guide shell 44, and is sleeved on the output shaft of the double-headed motor 40. Specifically, the outer guide shell 42 and the inner guide shell 44 are both volutes, that is, the axis of the outer air inlet hole 420 is perpendicular to the axis of the outer guide hole 421. Similarly, the inner guide shell 44 transports the gas in the installation box 1 through the inner guide hole 441 to the air outlet box 3 through the inner impeller 45; the blowing mechanism 41 also includes a partition 46, which is arranged between the inner guide shell 44 and the outer guide shell 42. The partition 46 is used to separate the inner cavity of the inner guide shell 44 from the inner cavity of the outer guide shell 42, so that the airflow of the outer guide shell 42 and the airflow of the inner guide shell 44 do not interfere with each other. When the double-headed motor 40 is started, the outer impeller 43 and the inner impeller 45 rotate at the same time, wherein the outer impeller 43 sucks the airflow in the installation box 1 into the outer guide shell 42 through the outer air inlet hole 420 of the outer guide shell 42, and the impeller of the outer impeller 43 The airflow is quickly discharged through the outer guide hole 421 along the internal pipeline of the outer guide shell 42, and finally the high-pressure airflow is delivered to the corresponding equipment or chamber through the air outlet 30 of the air outlet box 3. The inner guide shell 44 is provided with an inner air inlet hole 440 which is opposite to the opening direction of the outer air inlet hole 420, so that the gas suction of the inner impeller 45 and the gas suction of the outer impeller 43 do not interfere with each other, so that the outer guide shell 42 and the inner and outer guide shells 42 can simultaneously inhale and discharge the airflow, thereby improving the efficient output of the ventilation device; in general, this embodiment drives four impeller structures simultaneously through the double-headed motor 40, and provides high-pressure airflow for a single air outlet box 3 through multiple outer guide shells 42 and multiple inner guide shells 44, so as to make full use of the power of the double-headed motor 40 and improve the output air volume and wind force of the ventilation device;

[0035] It should also be noted that the material of the inner impeller 45 and the outer impeller 43 are both aluminum, and the high-strength aviation aluminum material is adopted, which is light in weight and can effectively reduce the energy consumption of the double-headed motor 40; the inner impeller 45 and the outer impeller 43 are both high-efficiency three-dimensional flow impellers, which improve the blowing efficiency and increase the air volume; in the present embodiment, the various structures of the fan assembly are precisely processed, so that the gap between the inner impeller 45 and the inner guide shell 44 is 0.3mm to 0.5mm, and the outer guide shell 42 is designed in the same way as the outer impeller 43. By reducing the gap between the impeller and the shell, the internal leakage of the airflow in the shell can be effectively reduced, the power consumption of the double-headed motor 40 can be reduced, and the working efficiency can be improved, so that the ventilation device can be more efficient for ventilating equipment such as central air conditioners; through the precision processing of the impeller and the shell, the ventilation device can greatly improve the efficiency of the main fan of the central air conditioner when used in the central air conditioner.

[0036] See attached Figure 4 The partition 46 is a circular partition 46 with a avoidance opening 460 at the center. The inner impeller 45 and the outer impeller 43 are coaxially provided with connecting columns on the side facing the partition 46. The ends of the connecting columns facing each other are circumferentially provided with tooth grooves 435. The two connecting columns are inserted into the avoidance opening 460 and meshed through the tooth grooves 435. Specifically, the tooth grooves 435 are designed as a whole in a circular ring shape. The tooth grooves 435 on the inner impeller 45 can mesh with the tooth grooves 435 on the outer impeller 43, thereby improving the assembly stability of the inner impeller 45 and the outer impeller 43 on the output shaft of the double-headed motor 40, and through the mutual meshing of the two, the rotation consistency of the inner impeller 45 and the outer impeller 43 is improved, and the rotation power of the double-headed motor 40 is effectively utilized.

[0037] See attached Figure 4 and attached Figure 5The fan assembly 4 also includes a flow tube 47, the two ends of which are respectively connected to the inner guide shells 44 on both sides, and are coaxially arranged with the double-headed motor 40, and the inner wall of the flow tube 47 and the outer wall of the double-headed motor 40 form a flow cavity 470, and the flow cavity 470 is respectively connected to the inner air inlet holes 440 on both sides; a plurality of flow holes 471 are provided on the tube wall of the flow tube 47, specifically, a connecting plate can be provided at the inner air inlet hole 440 of the inner guide shell 44, and a hole is opened on the connecting plate for connecting the end wall of the flow tube 47, and a through hole connecting the inner air inlet hole 440 and the flow cavity 470 is correspondingly provided on the connecting plate, so as to facilitate the assembly and overall structure of the flow tube 47 The stability of the structure; when the double-headed motor 40 is started, the inner impellers 45 at both ends of the flow tube 47 rotate to inhale the gas in the installation box 1. The airflow first enters the flow cavity 470 through multiple flow holes 471, and then enters the corresponding inner guide shell 44 under the suction of the inner impellers 45 on both sides. In this process, the airflow first converges in the middle of the flow cavity 470 and then flows to the inner guide shells 44 on both sides, so that the inner impeller 45 can effectively take away the heat on the double-headed motor 40 while realizing gas inhalation, avoiding the temperature generated by the continuous operation of the double-headed motor 40 affecting the normal operation of the double-headed motor 40 itself, thereby ensuring the reliability of the double-headed motor 40.

[0038] In this embodiment, the middle diameter of the flow tube 47 is larger than the diameters on both sides of the flow tube 47, and multiple flow holes 471 are opened in the middle of the flow tube 47, so that the middle volume of the flow cavity 470 is larger, and the end side volume of the flow cavity 470 is smaller, so that the airflow enters the flow cavity 470 through the flow holes 471 and can flow more quickly into the inner guide shell 44, thereby improving the flow speed of the airflow and the heat dissipation effect on the double-headed motor 40.

[0039] See attached Figure 5 The fan assembly 4 also includes a support frame 48, which is fixed on the bottom wall of the installation box 1. The support frame 48 is respectively connected to at least two blowing mechanisms 41. On the one hand, the support frame 48 facilitates the installation of the fan assembly 4 in the installation box 1. On the other hand, the flow tube 47 and the double-headed motor 40 of the fan assembly 4 are suspended by the support frame 48, so that the airflow in the installation box 1 is uniformly merged into the flow cavity 470 along the circumference of the flow tube 47, thereby improving the airflow suction effect of the inner impeller 45 on the installation box 1, and improving the ventilation efficiency and output air volume of the ventilation device.

[0040] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A ventilation device, characterized in that: It includes a mounting box, an air inlet box, an air outlet box and a fan assembly; The air inlet box and the air outlet box are installed in parallel on the top of the installation box, and the air inlet box is connected to the installation box; the side wall of the air inlet box is provided with an air inlet, and the side wall of the air outlet box is provided with an air outlet, and the side wall of the air inlet box provided with the air inlet is arranged opposite to the side wall of the air outlet box provided with the air outlet; The fan assembly is fixed in the installation box; the fan assembly includes a double-headed motor and at least two blowing mechanisms; at least two of the blowing mechanisms are symmetrically installed on both sides of the double-headed motor, and at least two of the blowing mechanisms are used to connect the installation box and the air outlet box.

2. A ventilation device according to claim 1, characterized in that: The air blowing mechanism comprises an outer guide shell and an outer impeller, wherein the outer guide shell is provided with an outer air inlet hole for connecting to the installation box and an outer guide hole for connecting to the air outlet box; The two output shafts of the double-headed motor are respectively connected to the blowing mechanisms on both sides. The output shaft of the double-headed motor extends into the outer guide shell and is coaxially arranged with the outer air inlet hole. The outer impeller is arranged in the outer guide shell and is mounted on the output shaft of the double-headed motor.

3. A ventilation device according to claim 2, characterized in that: The air blowing mechanism further comprises an inner guide shell and an inner impeller; the inner guide shell is provided with an inner air inlet hole connected to the mounting box and an inner guide hole for connecting to the air outlet box; The inner guide shell is arranged on the inner side of the outer guide shell, the outer air inlet hole and the inner air inlet hole are in opposite directions, and the inner impeller is arranged in the inner guide shell and sleeved on the output shaft of the double-headed motor.

4. A ventilation device according to claim 3, characterized in that: The blowing mechanism also includes a partition, which is arranged between the inner guide shell and the outer guide shell, and is used to separate the inner cavity of the inner guide shell from the inner cavity of the outer guide shell. The partition is provided with a avoidance opening, and the inner impeller and the outer impeller are coaxially provided with connecting columns on the side facing the partition, and the facing ends of the connecting columns are provided with tooth grooves along the circumferential direction, and the two connecting columns are inserted into the avoidance opening and meshed through the tooth grooves.

5. A ventilation device according to claim 3, characterized in that: The fan assembly also includes a flow tube, the two ends of which are respectively connected to the inner guide shells on both sides, and are coaxially arranged with the double-headed motor, and the inner wall of the flow tube and the outer wall of the double-headed motor form a flow cavity, and the flow cavity is respectively connected to the inner air inlet holes on both sides; a plurality of flow holes are provided on the tube wall of the flow tube.

6. A ventilation device according to claim 5, characterized in that: The diameter of the middle portion of the flow tube is larger than the diameters of the two sides of the flow tube, and a plurality of flow holes are opened in the middle portion of the flow tube.

7. A ventilation device according to claim 3, characterized in that: The fan assembly also includes a support frame, which is fixed on the bottom wall of the installation box and is respectively connected to at least two of the air blowing mechanisms.

8. A ventilation device according to claim 3, characterized in that: The inner guide casing and the outer guide casing are both volute casings.

9. A ventilation device according to claim 3, characterized in that: The inner impeller and the outer impeller are both made of aluminum.

10. A ventilation device according to claim 3, characterized in that: The inner impeller and the outer impeller are both three-dimensional flow impellers.

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