CN218894772U

CN218894772U - Adjustable constant flow fan

Info

Publication number: CN218894772U
Application number: CN202222626566.8U
Authority: CN
Inventors: 徐健; 郑巨会; 陈云
Original assignee: Zhejiang Menred Environment Technology Co ltd
Current assignee: Zhejiang Menred Environment Technology Co ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-04-21
Anticipated expiration: 2032-09-28

Abstract

The utility model relates to an adjustable constant flow fan. The fresh air flow speed adjusting device solves the problems that fresh air flow speed adjusting is inconvenient and using effect is affected in the prior art. The novel air conditioner comprises a motor assembly shell, wherein an air outlet at one end of the motor assembly shell is provided with a fresh air pipeline, air inlets which are symmetrically arranged are respectively arranged at two sides of the motor assembly shell, a pitot tube flow meter assembly which is perpendicularly and alternately arranged is fixedly arranged in the fresh air pipeline, a rotation driving assembly is arranged in the motor assembly shell, an annular air supply structure is arranged on the outer side of the circumference of the rotation driving assembly and on the inner side of the circumference of the motor assembly shell, and an air exhaust gap which is mutually communicated with the fresh air pipeline is arranged between two sides of the annular air supply structure and the motor assembly shell. The utility model has the advantages that: the fresh air flow rate can be automatically adjusted according to the exhaust flow rate, so that the indoor air quality is ensured, and the use effect is good.

Description

Adjustable constant flow fan

Technical Field

The utility model relates to the technical field of new fans, in particular to an adjustable constant flow fan.

Background

Along with the development of technology, people attach more and more importance to indoor air environment quality, wherein, new fan is as an effective air ventilation equipment, can make indoor air circulate, on the one hand discharges indoor dirty air outdoor, on the other hand is imported indoor after measures such as disinfecting, disinfection, filtration to outdoor fresh air, lets the room be fresh clean air everywhere, consequently, gets more and more popular among people. However, the existing fresh air machine is long in fresh air pipeline, and the filter screen is easy to cause that the fresh air flow rate is smaller than the exhaust flow rate after long-term use, so that outdoor turbid gas is led into a room after long-term use, and the use effect is affected.

Disclosure of Invention

The utility model aims to solve the problems and provides an adjustable constant flow fan which is simple in structure and good in use effect.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides an adjusting type constant flow fan, including motor assembly casing, the air exit of motor assembly casing one end is equipped with the new trend pipeline, and motor assembly casing both sides are equipped with the air intake that is the symmetry setting respectively, and new trend pipeline internal fixation is equipped with the pitot tube flowmeter subassembly that is perpendicular alternately setting, is equipped with in the motor assembly casing and rotates drive assembly, and rotates drive assembly circumference outside and is located motor assembly casing circumference inboard and be equipped with annular air supply structure, be equipped with the clearance of airing exhaust that communicates each other with the new trend pipeline between annular air supply structure both sides and the motor assembly casing. Through detecting the new trend flow at the pitot tube flowmeter subassembly that sets up in the new trend pipeline, when new trend flow is less than the flow of airing exhaust, then through rotating drive assembly drive annular, air supply structure improvement rotational speed for new trend air inlet flow, simple structure, the dismouting is convenient, and is with low costs moreover, easily popularizes, and convenient to use and degree of automation are high, and the air flow detects the accuracy height, excellent in use effect.

In the above-mentioned regulation formula constant flow fan, annular air supply structure is including setting up the impeller at air intake circumference inboard, and impeller circumference inboard forms the air inlet cavity, and impeller one side has the air inlet and is uncovered and the opposite side is equipped with the linkage separation disk body. The setting of impeller can be with the new trend rotation after filtering to send to the new trend pipeline, realizes the roll air supply, avoids directly blowing.

In the above-mentioned regulation formula constant flow fan, form the new trend chamber between annular air supply structure circumference and the motor assembly casing inner chamber.

In the above-mentioned regulation formula constant flow fan, rotate drive assembly and include rotation driving motor, motor assembly casing bottom is equipped with the control box, and rotates driving motor and the control module electric connection in the control box through the electric connection line. The rotating speed of the rotating connecting shaft can be adjusted through the control box, so that the air supply speed is adjusted.

In the above-mentioned regulation formula constant flow fan, pitot tube flowmeter subassembly is including pegging graft the pitot tube that sets up in fresh air pipeline, and the pitot tube is alternately perpendicular setting, and one of them pitot tube is equipped with a plurality of full pressure holes towards one side of air exit, and another pitot tube is equipped with a plurality of static pressure holes towards one side of air exit.

In the above-mentioned regulation formula constant flow fan, control module is connected with the data display screen and with rotate drive assembly electric connection.

Compared with the prior art, the utility model has the advantages that: can carry out real-time detection to the new trend velocity of flow through pitot tube flowmeter subassembly, when the new trend velocity of flow is less than the velocity of flow of airing exhaust, thereby can adjust the rotational speed that rotates driving motor through the control box and increase the air supply velocity of flow, thereby make the air inlet efficiency of new trend greater than or equal to the velocity of flow of airing exhaust to realize indoor air change effect, result of use has effectively ensured indoor air quality.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a front view of the present utility model;

FIG. 3 is a schematic view of another view of the present utility model;

FIG. 4 is a cross-sectional view of the present utility model;

fig. 5 is a partial structural connection block diagram of the present utility model.

In the figure: the motor assembly shell 1, the air outlet 11, the fresh air pipeline 12, the air inlet 13, the fresh air cavity 14, the pitot tube flowmeter assembly 2, the pitot tube 21, the full pressure hole 22, the static pressure hole 221, the data display screen 23, the rotation driving assembly 3, the rotation driving motor 31, the rotation connecting shaft 32, the control box 33, the control module 34, the annular air supply structure 4, the air exhaust gap 41, the impeller 42, the air inlet cavity 43, the air inlet opening 44 and the linkage blocking disc 45.

Detailed Description

The utility model will be described in further detail with reference to the drawings and the detailed description.

As shown in fig. 1-5, an adjustable constant-flow fan comprises a motor assembly shell 1, wherein an air outlet 11 at one end of the motor assembly shell 1 is provided with a fresh air pipeline 12, and two sides of the motor assembly shell 1 are respectively provided with air inlets 13 which are symmetrically arranged. When the adjustable constant-flow air valve is used as a fresh air fan, the air inlet 13 is arranged outdoors, the air inlet 13 is connected with a fresh air inlet pipeline, and the end part of the fresh air inlet pipeline is provided with the fresh air fan; when the adjustable constant-flow air valve is used as an exhaust fan, the air inlet 13 can be used as an air outlet, and the air outlet is connected with an exhaust fan for sucking indoor air.

The fresh air pipeline 12 is internally fixed and is provided with a pitot tube flowmeter assembly 2 which is vertically and alternately arranged, the motor assembly shell 1 is internally provided with a rotation driving assembly 3, the circumferential outer side of the rotation driving assembly 3 and the circumferential inner side of the motor assembly shell 1 are provided with an annular air supply structure 4, and an exhaust gap 41 which is mutually communicated with the fresh air pipeline 12 is arranged between two sides of the annular air supply structure 4 and the motor assembly shell 1. The annular air supply structure 4 is used for adjusting the fresh air flow rate, and the exhaust gap 41 is used for circumferentially feeding fresh air into the fresh air pipeline 12.

The annular air supply structure 4 includes an impeller 42 disposed at the inner side of the air inlet 13 in the circumferential direction, and an air inlet cavity 43 is formed at the inner side of the impeller 42 in the circumferential direction. The air supply ring body 42 is arranged on the inner side of the circumference of the relatively independent air inlet 13, so that two sides form bidirectional air supply, and the air supply efficiency is improved.

One side of the impeller 42 is provided with an air inlet opening 44, and the other side is provided with a linkage blocking disc body 45, and the linkage blocking disc body 45 is used for blocking the air inlet cavities 43 at two sides to form split flow.

Specifically, the rotation driving assembly 3 includes a rotation driving motor 31, a control box 33 is disposed at the bottom of the motor assembly housing 1, and the rotation driving motor 31 is electrically connected to a control module 34 in the control box 33 through an electrical connection line.

In detail, a fresh air cavity 14 is formed between the circumferential direction of the annular air supply structure 4 and the inner cavity of the motor assembly housing 1.

The pitot tube flowmeter assembly 2 comprises pitot tubes 21 which are inserted and arranged in the fresh air pipeline 12 in a splicing mode, the pitot tubes 21 are arranged vertically in a crossing mode, one side, facing the air outlet 11, of one pitot tube 21 is provided with a plurality of full-pressure holes 22, and one side, facing away from the air outlet 11, of the other pitot tube 21 is provided with a plurality of static-pressure holes 221.

Preferably, the control module 34 is connected to the data display screen 23 and electrically connected to the rotation driving assembly 3.

In summary, the principle of this embodiment is as follows: the pitot tube flowmeter assembly 2 detects the flow rate of the fresh air, and detects the exhaust flow rate arranged on the other side of the wall body, when the exhaust flow rate is larger than the fresh air flow rate, the rotating speed of the rotating driving motor 31 and the fresh air suction speed of the fresh air fan are increased through the control box 33, so that the fresh air flow rate is increased, and when the pitot tube flowmeter assembly 2 detects that the fresh air flow rate is larger than or equal to the exhaust flow rate, the rotating speed of the rotating driving motor 31 and the fresh air suction speed of the fresh air fan are kept constant, so that the indoor air environment quality is ensured.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Although the terms of the motor assembly housing 1, the air outlet 11, the fresh air duct 12, the air intake 13, the fresh air chamber 14, the pitot tube flowmeter assembly 2, the pitot tube 21, the full pressure hole 22, the static pressure hole 221, the data display screen 23, the rotation driving assembly 3, the rotation driving motor 31, the rotation connecting shaft 32, the control box 33, the control module 34, the rotation cylinder 35, the seal positioning seat 36, the annular air supply structure 4, the air exhaust gap 41, the impeller 42, the air intake cavity 43, the air intake opening 44, the linkage blocking disc 45, and the like are used more herein, the possibility of using other terms is not excluded. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.

Claims

1. The utility model provides an adjusting type constant flow fan, includes motor assembly casing (1), air exit (11) of motor assembly casing (1) one end be equipped with fresh air duct (12), and motor assembly casing (1) both sides are equipped with air intake (13) that are the symmetry setting respectively, its characterized in that, fresh air duct (12) internal fixation be equipped with be vertical cross pitot tube flowmeter subassembly (2) that set up, motor assembly casing (1) in be equipped with rotation drive assembly (3), and rotation drive assembly (3) circumference outside and be located motor assembly casing (1) circumference inboard and be equipped with annular air supply structure (4), annular air supply structure (4) both sides and motor assembly casing (1) between be equipped with fresh air duct (12) intercommunication exhaust clearance (41).

2. The adjustable constant flow fan according to claim 1, wherein the annular air supply structure (4) comprises an impeller (42) arranged on the circumferential inner side of the air inlet (13), an air inlet cavity (43) is formed on the circumferential inner side of the impeller (42), an air inlet opening (44) is formed on one side of the impeller (42), and a linkage blocking disc body (45) is arranged on the other side of the impeller.

3. The adjustable constant flow fan according to claim 2, wherein a fresh air cavity (14) is formed between the circumferential direction of the annular air supply structure (4) and the inner cavity of the motor assembly housing (1).

4. The adjustable constant flow fan as claimed in claim 1, wherein the rotary driving assembly (3) comprises a rotary driving motor (31), a control box (33) is arranged at the bottom of the motor assembly housing (1), and the rotary driving motor (31) is electrically connected with a control module (34) in the control box (33) through an electrical connection line.

5. The adjustable constant flow fan according to claim 1, wherein the pitot tube flowmeter assembly (2) comprises pitot tubes (21) which are inserted and arranged in the fresh air pipeline (12), the pitot tubes (21) are arranged vertically in a crossing mode, one side of each pitot tube (21) facing the air outlet (11) is provided with a plurality of full-pressure holes (22), and one side of the other pitot tube (21) facing away from the air outlet (11) is provided with a plurality of static pressure holes (221).

6. The adjustable constant flow fan as claimed in claim 4, wherein the control module (34) is connected to the data display screen (23) and is electrically connected to the rotation driving assembly (3).