Air supply unit capable of uniformly mixing fresh air and return air

Abstract

An air supply mechanism comprises an air inlet pipe, a baffle is fixedly installed in the middle of the inner wall of the air inlet pipe, an air outlet pipe is fixedly installed in the middle of the bottom face of the air inlet pipe, the interior of the air outlet pipe is communicated with the interior of the air inlet pipe, the lower end of the baffle extends into the air outlet pipe, and the lower end of the baffle extends into the air outlet pipe. Baffle plates are fixedly connected to the two sides of the inner wall of the air outlet pipe, the baffle plates on the two sides are arranged in a staggered mode, a plurality of uniform holes are formed in the surface of each baffle plate, a fresh air inlet and a return air inlet are formed in the two sides of the air inlet pipe correspondingly, heat of hot air at exhaust outlets of equipment such as a workshop motor is recycled to enter the return air inlet, and the heat of hot air at the exhaust outlets of the equipment such as the workshop motor is recycled. Therefore, direct mixing of cold air and hot air is achieved, mixed air is output through the air outlet pipe, the problem that the temperature of fresh air is too low is solved, a plurality of uniform holes are formed in the surface of the baffle plate, airflow can pass through the holes and be diffused, and the original high-speed airflow is dispersed when passing through the baffle plate.

Description

Technical Field

[0001] The utility model relates to the technical field of fresh air devices, in particular to a blower unit for mixing fresh air and return air. Background Art

[0002] The fresh air device in a factory building is a device used to improve the air quality in an industrial factory building. It introduces fresh air from the outside into the room, filters out harmful substances such as dust and pollutants, and at the same time discharges the waste gas and harmful gas in the room to keep the air circulating.

[0003] In winter, the outdoor temperature is very low. After a large amount of fresh air is sent into the factory building, the temperature in the factory building is very low, which brings the risk of freezing of the system pipeline, is unfavorable to the equipment, affects the stability of the system, and is also not conducive to the operation of the staff. Content of the Utility Model

[0004] The technical problems to be solved by the utility model are as follows: In winter, the outdoor temperature is very low. After a large amount of fresh air is sent into the factory building, the temperature in the factory building is very low.

[0005] The purpose of the utility model can be realized by the following technical solutions:

[0006] A blower unit for mixing fresh air and return air includes a blowing mechanism, and a sound insulation mechanism is arranged below the blowing mechanism. The blowing mechanism includes a motor;

[0007] It further includes:

[0008] The blowing mechanism includes an air inlet pipe, a baffle is fixedly installed in the middle of the inner wall of the air inlet pipe, an air outlet pipe is fixedly installed in the middle of the bottom surface of the air inlet pipe, and the inside of the air outlet pipe is connected to the inside of the air inlet pipe in a through manner;

[0009] Wherein, the lower end of the baffle extends into the air outlet pipe, both sides of the inner wall of the air outlet pipe are fixedly connected with baffle plates, and the baffle plates on both sides are arranged staggeredly. A plurality of uniform holes are formed on the surface of each baffle plate.

[0010] As a further scheme of the utility model: A rain shield is fixedly installed on one side of the upper end of the air inlet pipe, a blower is fixedly installed on the inner wall of the air inlet pipe near the rain shield, a fresh air inlet is formed on the bottom surface of the rain shield, a bird-proof net is fixedly installed at the bottom inside the rain shield, and fixed louvers are fixedly installed above the bird-proof net inside the rain shield.

[0011] As a further solution of the present utility model: a return air inlet is provided at the upper end of the air inlet pipe and on the side far from the rain shield. The motor is fixedly installed on the surface of the air inlet pipe near the return air inlet. The output shaft of the motor penetrates into the interior of the air inlet pipe, and the output shaft of the motor is fixedly connected with a wind valve. The middle part of the side of the wind valve is also rotatably connected to the inner wall of the air inlet pipe.

[0012] As a further solution of the present utility model: an installation frame is fixedly installed at the bottom end of the air outlet pipe. A plug board is slidably connected to the inner wall of the installation frame. One side of the plug board extends to the outside of the installation frame and is fixedly connected with a pull ring. A filter screen is inlaid on the surface of the plug board located inside the installation frame.

[0013] As a further solution of the present utility model: a threaded abutting rod is threadedly connected to one end of the top of the installation frame. The lower end surface of the threaded abutting rod abuts against the outside of the plug board.

[0014] As a further solution of the present utility model: the sound insulation mechanism includes a first clamping plate. A second clamping plate is movably connected to one side of the first clamping plate. The first clamping plate and the second clamping plate form a rectangle. A sound insulation layer is movably connected to the inner sides of the first clamping plate and the second clamping plate. The inner side of the sound insulation layer abuts against the outer wall of the air outlet pipe. A clamping groove is provided at one end of the surface of the first clamping plate.

[0015] As a further solution of the present utility model: a positioning shaft is fixedly connected to one end of the second clamping plate. The surface of the positioning shaft is inserted into the inner wall of the first clamping plate. A fixed frame is fixedly installed on the side of the second clamping plate far from the positioning shaft. A spring is fixedly connected to the inner wall of the fixed frame. The other side of the spring is fixedly connected with a pressing member. A rolling ball is movably contacted with the side of the pressing member. One side of the rolling ball extends out of the fixed frame and abuts against the inside of the clamping groove.

[0016] The beneficial effects of the present utility model:

[0017] (1) In the present utility model, a fresh air inlet and a return air inlet are respectively arranged on both sides of the air inlet pipe. The heat of the hot air discharged from the exhaust ports of equipment such as factory motors is recovered and enters the return air inlet, so as to realize the direct mixing of cold and hot air. The mixed gas is output from the air outlet pipe, solving the problem of too low fresh air temperature.

[0018] (2) A baffle plate is arranged on the inner wall of the air outlet pipe. A plurality of uniform holes are provided on the surface of the baffle plate. The holes can allow the air flow to pass through and diffuse, so that the originally high-speed air flow is dispersed when passing through the baffle plate, avoiding too strong air flow or turbulent flow in local areas. The fresh air and the return air are mixed more evenly, and the air flow is more stable after passing through, reducing the wind noise;

[0019] (3) A sound insulation mechanism is provided on the outer side of the air outlet pipe. Multiple sound insulation mechanisms can be set according to the length of the pipe. It is composed of a first clamping plate and a second clamping plate, which jointly clamp the sound insulation layer tightly on the outer side of the air outlet pipe, facilitating installation and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present utility model will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 is a schematic diagram of the overall internal structure of the present utility model;

[0022] Figure 2 is a side view schematic diagram of the overall structure of the blower unit in the present utility model;

[0023] Figure 3 is a top view schematic diagram of the overall structure of the baffle in the present utility model;

[0024] Figure 4 is a cross-sectional schematic diagram of the sound insulation mechanism in the present utility model from a top-down perspective;

[0025] Figure 5 is Figure 4 the enlarged structure schematic diagram of area A in

[0026] In the figures: 1, air supply mechanism; 101, air inlet pipe; 102, rain shield; 103, fresh air inlet; 104, fixed louver; 105, bird-proof net; 106, fan; 107, baffle; 108, return air inlet; 109, motor; 110, air valve; 111, air outlet pipe; 112, baffle plate; 113, uniform holes; 114, installation frame; 115, insertion plate; 116, filter screen; 117, pull ring; 118, threaded abutting rod; 2, sound insulation mechanism; 201, first clamping plate; 202, second clamping plate; 203, positioning shaft; 204, fixed frame; 205, extrusion member; 206, spring; 207, ball; 208, card slot; 209, sound insulation layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0028] Such as Figures 1-5As shown in the figure, a fresh air and return air mixing air supply unit includes an air supply mechanism 1, and a sound insulation mechanism 2 is arranged below the air supply mechanism 1. The air supply mechanism 1 includes a motor 109; it also includes: The air supply mechanism 1 includes an air inlet pipe 101. A baffle 107 is fixedly installed in the middle of the inner wall of the air inlet pipe 101. A bottom air outlet pipe 111 is fixedly installed in the middle of the bottom surface of the air inlet pipe 101. The inside of the air outlet pipe 111 is connected to the inside of the air inlet pipe 101 in a through manner; wherein, the lower end of the baffle 107 extends into the air outlet pipe 111. Baffle plates 112 are fixedly connected to both sides of the inner wall of the air outlet pipe 111, and the baffle plates 112 on both sides are arranged staggeredly. A plurality of uniform holes 113 are formed on the surface of each baffle plate 112, as Figure 1 shown, the setting of the baffle 107 prevents the fresh air and the return air from colliding, thus affecting the entry of air on both sides of the air inlet pipe 101.

[0029] A rain shield 102 is fixedly installed on one side of the upper end of the air inlet pipe 101. A fan 106 is fixedly installed on the inner wall of the air inlet pipe 101 near the rain shield 102. A fresh air inlet 103 is formed on the bottom surface of the rain shield 102. A bird-proof net 105 is fixedly installed at the bottom inside the rain shield 102. Fixed louvers 104 are fixedly installed inside the rain shield 102 and above the bird-proof net 105, as Figure 1 shown, the main function of the fixed louvers 104 is to adjust or evenly distribute the inflow of fresh air.

[0030] A return air inlet 108 is formed on the upper end of the air inlet pipe 101 and on the side far from the rain shield 102. The motor 109 is fixedly installed on the surface of the air inlet pipe 101 near the return air inlet 108. The output shaft of the motor 109 penetrates into the air inlet pipe 101, and the output shaft of the motor 109 is fixedly connected to a wind valve 110. The middle part of the side of the wind valve 110 is also rotatably connected to the inner wall of the air inlet pipe 101, as Figure 1 shown, the rotation of the wind valve 110 can adjust the effective air inlet area of the return air inlet 108, so as to achieve the function of adjusting the return air flow rate.

[0031] An installation frame 114 is fixedly installed at the bottom end of the air outlet pipe 111. A plug board 115 is slidably connected to the inner wall of the installation frame 114. One side of the plug board 115 extends to the outside of the installation frame 114 and is fixedly connected to a pull ring 117. A filter screen 116 is inlaid on the surface of the plug board 115 located inside the installation frame 114, as Figure 1 shown, the filter screen 116 intercepts dust.

[0032] One end of the top of the installation frame 114 is threadedly connected with a threaded abutting rod 118. The lower end surface of the threaded abutting rod 118 abuts against the outside of the plug board 115, as Figure 1 shown, loosen and remove the threaded abutting rod 118, then the pull ring 117 can be pulled outwards, and the plug board 115 can be pulled out from the installation frame 114.

[0033] The sound insulation mechanism 2 includes a first clamping plate 201. A second clamping plate 202 is movably connected to one side of the first clamping plate 201. The first clamping plate 201 and the second clamping plate 202 form a rectangle. A sound insulation layer 209 is movably connected to the inner sides of the first clamping plate 201 and the second clamping plate 202. The inner side of the sound insulation layer 209 abuts against the outer wall of the air outlet pipe 111. A clamping groove 208 is formed at one end of the surface of the first clamping plate 201. A positioning shaft 203 is fixedly connected to one end of the second clamping plate 202. The surface of the positioning shaft 203 is inserted into the inner wall of the first clamping plate 201. A fixing frame 204 is fixedly installed on the side of the second clamping plate 202 away from the positioning shaft 203. A spring 206 is fixedly connected to the inner wall of the fixing frame 204. The other side of the spring 206 is fixedly connected to a pressing member 205. A rolling ball 207 is movably in contact with the side of the pressing member 205. One side of the rolling ball 207 extends out of the fixing frame 204 and abuts against the inner side of the clamping groove 208. As Figures 4-5 shown, when the pressing member 205 moves to the left, the pressing member 205 separates from the rolling ball 207. Thus, when the first clamping plate 201 and the second clamping plate 202 separate, the first clamping plate 201 pushes the rolling ball 207 to contract into the interior of the fixing frame 204.

[0034] The working principle of the present utility model:

[0035] When the device is in use, the fan 106 is started to send the air outside the fresh air inlet 103 into the air inlet pipe 101. The hot air in the workshop is sent into the air inlet pipe 101 through the return air inlet 108. By starting the motor 109, the air valve 110 is adjusted to turn, thereby restricting the return air flow rate in the air inlet pipe 101;

[0036] The return air and the fresh air are guided downward along the surface of the baffle 107 in the air inlet pipe 101 into the air outlet pipe 111. Then, the fresh air and the return air are fully mixed after contacting each baffle plate 112. The mixed air passes through the filter screen 116 and is output outward;

[0037] When installing the sound insulation mechanism 2, the sound insulation layer 209 is sleeved on the outside of the air outlet pipe 111. The first clamping plate 201 and the second clamping plate 202 are respectively abutted against both sides of the sound insulation layer 209. The positioning shaft 203 is inserted into the interior of the first clamping plate 201. At the same time, under the push of the spring 206, the pressing member 205 presses the rolling ball 207 into the interior of the clamping groove 208. When disassembling, the pressing member 205 is pulled in the direction away from the first clamping plate 201, so that the pressing member 205 separates from the rolling ball 207, and the rolling ball 207 can be separated from the clamping groove 208.

[0038] The above has described in detail an embodiment of the present utility model, but the above content is only a preferred embodiment of the present utility model and cannot be considered as defining the scope of implementation of the present utility model. All equivalent changes and improvements made in accordance with the scope of application of the present utility model shall still fall within the scope covered by the patent of the present utility model.

Claims

1. A fresh air and return air mixing air supply unit, including an air supply mechanism (1), a sound insulation mechanism (2) is arranged below the air supply mechanism (1), and the air supply mechanism (1) includes a motor (109); It is characterized in that It further includes: The air supply mechanism (1) includes an air inlet pipe (101), a baffle (107) is fixedly installed in the middle of the inner wall of the air inlet pipe (101), an air outlet pipe (111) is fixedly installed in the middle of the bottom surface of the air inlet pipe (101), and the inside of the air outlet pipe (111) is connected to the inside of the air inlet pipe (101) through connection; Among them, the lower end of the baffle (107) extends into the air outlet pipe (111), baffles (112) are fixedly connected to both sides of the inner wall of the air outlet pipe (111), and the two sides of the baffles (112) are arranged staggeredly respectively, and a number of uniform holes (113) are formed on the surface of each baffle (112).

2. The supply air fan unit for mixing fresh air and return air according to claim 1, wherein A rain shield (102) is fixedly installed on one side of the upper end of the air inlet pipe (101), a fan (106) is fixedly installed on the inner wall of the air inlet pipe (101) near the rain shield (102), a fresh air inlet (103) is formed on the bottom surface of the rain shield (102), a bird-proof net (105) is fixedly installed on the inner bottom of the rain shield (102), and fixed louvers (104) are fixedly installed above the bird-proof net (105) on the inner side of the rain shield (102).

3. The air supply fan unit for mixing fresh air and return air according to claim 2, wherein, A return air inlet (108) is formed on the upper end of the air inlet pipe (101) on the side far from the rain shield (102), the motor (109) is fixedly installed on the surface of the air inlet pipe (101) near the return air inlet (108), the output shaft of the motor (109) penetrates into the air inlet pipe (101) internally, and the output shaft of the motor (109) is fixedly connected to a wind valve (110), and the middle part of the side of the wind valve (110) is also rotationally connected to the inner wall of the air inlet pipe (101).

4. The fresh air return air mixing type air supply unit according to claim 3, characterized in that, An installation frame (114) is fixedly installed at the bottom end of the air outlet pipe (111), a plug board (115) is slidably connected to the inner wall of the installation frame (114), one side of the plug board (115) extends to the outside of the installation frame (114) and is fixedly connected to a pull ring (117), and a filter screen (116) is inlaid on the surface of the plug board (115) located inside the installation frame (114).

5. A fresh air and return air mixing air supply unit according to claim 4, characterized in that, One end of the top of the installation frame (114) is threadedly connected with a threaded abutting rod (118), and the lower end surface of the threaded abutting rod (118) abuts against the outside of the plug board (115).

6. A fresh air and return air mixing air supply fan unit according to claim 1, characterized in that, The sound insulation mechanism (2) includes a first clamping plate (201), a second clamping plate (202) is movably connected to one side of the first clamping plate (201), the first clamping plate (201) and the second clamping plate (202) form a rectangle, a sound insulation layer (209) is movably connected to the inner sides of the first clamping plate (201) and the second clamping plate (202), the inner side of the sound insulation layer (209) abuts against the outer wall of the air outlet pipe (111), and a clamping groove (208) is formed at one end of the surface of the first clamping plate (201).

7. A fresh air and return air mixing supply fan unit according to claim 6, characterized in that, One end of the second clamping plate (202) is fixedly connected with a positioning shaft (203). The surface of the positioning shaft (203) is inserted into the inner wall of the first clamping plate (201). A fixed frame (204) is fixedly installed on the side of the second clamping plate (202) away from the positioning shaft (203). A spring (206) is fixedly connected to the inner wall of the fixed frame (204). The other side of the spring (206) is fixedly connected with an extrusion member (205). The side of the extrusion member (205) is in movable contact with a ball (207). One side of the ball (207) extends out of the fixed frame (204) and abuts against the inner side of the clamping groove (208).

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