CN219243814U - Cold and hot air mixing blending device - Google Patents

Abstract

The utility model discloses a cold and hot air mixing and homogenizing device, which comprises: fresh air system, return air system, mix wind cavity, first mix wind mixing system, second mix wind mixing system and supply-air outlet, fresh air system and return air system all set up in the one end that mixes the wind cavity, and the other end that mixes the wind cavity is provided with the supply-air outlet, and first mix wind mixing system and second mix wind mixing system set gradually in mixing the wind cavity along first direction. By the application of the utility model, the fresh air and the return air with temperature difference can be well mixed, and the air flows are mixed uniformly for a plurality of times through the corresponding mixed air mixing system, so that the uniform temperature balance of the air flow sent out by the air supply outlet is ensured, the return air is sucked by negative pressure and is automatically sucked, no additional power source is needed, and the sufficient air quantity is ensured while the energy is further saved; the utility model has the advantages of relatively simple structure, convenient use, convenient maintenance and longer service life.

Description

Cold and hot air mixing blending device

Technical Field

The utility model relates to the technical field of fresh air units, in particular to a cold and hot air mixing and homogenizing device.

Background

In order to protect corresponding equipment, a relatively closed equipment room is often arranged outside the equipment room, meanwhile, in order to avoid shutdown caused by overhigh temperature rise in the working process of the equipment, refrigeration equipment is often configured to realize indoor and outdoor cold and heat exchange, and the refrigeration equipment generally adopts a unit capable of introducing fresh air into the equipment room.

However, in the actual working process, most of fresh air units discharge hot air through an exhaust fan and directly introduce fresh air, but due to the existence of negative pressure, more sand and dust are often sucked into a room of equipment, so that the equipment is damaged; in addition, the prior art adopts a mode of matching with the air returning machine, so that the air returning machine mixes the air returning flow with the fresh air flow uniformly, but the air returning machine in the design further increases the energy consumption of the whole unit, the mixed air flow temperature is often uneven, the temperature fluctuation is larger, and the stable operation of equipment is difficult to ensure.

Disclosure of Invention

In view of the above, the present utility model provides a cooling/heating mixing device, comprising: the novel air conditioner comprises a fresh air system, an air return system, an air mixing cavity, a first air mixing and mixing system, a second air mixing and mixing system and an air supply opening, wherein the fresh air system and the air return system are arranged at one end of the air mixing cavity, the air supply opening is arranged at the other end of the air mixing cavity, and the first air mixing and mixing system and the second air mixing and mixing system are sequentially arranged in the air mixing cavity along a first direction;

in another preferred embodiment, the first wind mixing system comprises: the compression part, the balance part and the diffusion part are sequentially connected along the first direction, the inner outline of the compression part is gradually reduced along the first direction, and the inner outline of the diffusion part is gradually increased along the first direction.

In another preferred embodiment, the compressing part includes at least: a first portion and a second portion connected to each other, an inclination of an inner wall of the first portion being different from an inclination of an inner wall of the second portion.

In a further preferred embodiment, the inner contour of the balancing portion is arranged unchanged in the first direction.

In another preferred embodiment, the second wind mixing system comprises: the low-resistance blending device is provided with at least two air guide areas, and the two air guide areas are used for guiding airflow to move along two different directions and collide.

In another preferred embodiment, the low-resistance homogenizer comprises: the air guide device comprises a separation structure and a plurality of air guide sheets, wherein at least two adjacent air guide areas are formed in the separation structure, the two adjacent air guide areas are sequentially sleeved from inside to outside, each air guide area is internally provided with a plurality of air guide sheets, and the two adjacent air guide areas are used for guiding air flow to move along different spiral directions.

In another preferred embodiment, the fresh air system comprises: and the output end of the fresh air collecting unit stretches into the air mixing cavity and is close to the first air mixing and homogenizing system.

In another preferred embodiment, the fresh air collecting unit includes: the air mixing device comprises a fan, a nozzle valve and a nozzle air pipe, wherein the output end of the fan is connected with one end of the nozzle air pipe, the other end of the nozzle air pipe stretches into the air mixing cavity, and the nozzle valve is arranged on the nozzle air pipe.

In another preferred embodiment, the return air system comprises: the air return port is arranged at one end of the air mixing cavity, and the air valve is arranged on the air return port.

In another preferred embodiment, further comprising: the filtering system is connected to the input end of the fresh air system and is used for filtering air flow.

In another preferred embodiment, the filtration system comprises: the fresh air system comprises a filter cavity and a filter module, wherein one end of the filter cavity is communicated with the fresh air system, an air inlet is formed in the other end of the filter cavity, and the filter module is arranged in the filter cavity.

By adopting the technical scheme, the utility model has the positive effects compared with the prior art that: by the application of the utility model, the fresh air and the return air with temperature difference can be well mixed, and the air flows are mixed uniformly for a plurality of times through the corresponding mixed air mixing system, so that the uniform temperature balance of the air flow sent out by the air supply outlet is ensured, the return air is sucked by negative pressure and is automatically sucked, no additional power source is needed, and the sufficient air quantity is ensured while the energy is further saved; the utility model has the advantages of relatively simple structure, convenient use, convenient maintenance and longer service life.

Drawings

FIG. 1 is a schematic view of a first embodiment of a cooling/heating air mixing device according to the present utility model;

FIG. 2 is a schematic side view of a first embodiment of a cold and hot air mixing device according to the present utility model;

FIG. 3 is a schematic diagram of a second mixing system of a cold and hot mixing device according to the present utility model;

fig. 4 is an overall schematic diagram of a second embodiment of a cold and hot air mixing device according to the present utility model.

In the accompanying drawings:

1. a fresh air system; 2. a return air system; 3. a wind mixing cavity; 4. the first mixing system is used for mixing air; 5. the second mixing system is used for mixing air evenly; 6. a compression section; 7. a balancing part; 8. a diffusion section; 9. a low-resistance homogenizer; 10. a partition structure; 11. a deflector; 12. fresh air collecting unit; 13. a blower; 14. a nozzle valve; 15. a nozzle air pipe; 16. an air return port; 17. an air valve; 18. a filtration system; 19. a filter chamber; 20. a filtration module; 21. a sand discharging fan; 22. a fresh air cavity; 23. a shutter; 24. an air supply port; 25. and (3) a bracket.

Detailed Description

The utility model is further described below with reference to the drawings and specific examples, which are not intended to be limiting.

As shown in fig. 1 to 3, a cooling and heating air mixing device according to a preferred embodiment includes: the fresh air system 1, the return air system 2, the air mixing cavity 3, the first air mixing and homogenizing system 4, the second air mixing and homogenizing system 5 and the air supply outlet 24 are arranged at one end of the air mixing cavity 3, the air supply outlet 24 is arranged at the other end of the air mixing cavity 3, and the first air mixing and homogenizing system 4 and the second air mixing and homogenizing system 5 are sequentially arranged in the air mixing cavity 3 along the first direction; wherein, the first mixing system 4 includes: the compression part 6, the balance part 7 and the diffusion part 8 are sequentially connected along the first direction, the inner contour of the compression part 6 is gradually reduced along the first direction, and the inner contour of the diffusion part 8 is gradually increased along the first direction. Further, the cold and hot air mixing device is preferably used in combination with an equipment room where equipment is placed, fresh air flow outside the equipment room is filtered by the fresh air system 1 and then is input into one end of the air mixing cavity 3, meanwhile, warmer return air flow discharged from the equipment room is sucked by the return air system 2 by means of negative pressure generated when the fresh air flow is injected into the first air mixing system 4, the fresh air flow and the return air flow enter the first air mixing system 4 together, the fresh air flow and the return air flow enter the compression part 6 together and are mixed along with the change of the internal size of the compression part 6, mixing is carried out continuously in the balance part 7 and the diffusion part 8, air flow flowing out from the first air mixing system 4 enters the second air mixing system 5 through the air mixing cavity 3, and the second air mixing system 5 is used for further mixing the air flow with low resistance, so that the air flow reaching the ideal temperature is sent into the equipment room from the air supply port 24, and the temperature of the equipment room is reasonably regulated.

Further, as a preferred embodiment, the inner contour of the compressing portion 6 is the radial cross-section of the inner wall thereof, and the inner contour of the diffusing portion 8 is the radial cross-section of the inner wall thereof.

Further, as a preferred embodiment, the compressing portion 6, the balancing portion 7 and the diffusing portion 8 together form a venturi structure.

Further, as a preferred embodiment, as shown in fig. 2, the compressing section 6 includes at least: a first portion and a second portion connected to each other, an inclination of an inner wall of the first portion being different from an inclination of an inner wall of the second portion. Further, the air flow is better homogenized in the inner wall of the compression section 6 by the relative variation of the inner wall of the first section and the inner wall of the second section of the compression section 6.

Further, as a preferred embodiment, the first portion is disposed away from the balance 7 with respect to the second portion, the inner wall of the first portion and the inner wall of the second portion are both tapered, and the first portion and the second portion are disposed coaxially, in other words, the inclination of the inner walls of the first portion and the second portion is preferably different from the inclination of the bus bar of the inner wall of the first portion and the bus bar of the inner wall of the second portion.

Further, as a preferred embodiment, as shown in fig. 1, the angle between the generatrix of the first portion and the axis is smaller than the angle between the generatrix of the second portion and the axis.

Further, as a preferred embodiment, as shown in fig. 2, the angle between the generatrix of the first portion and the axis is larger than the angle between the generatrix of the second portion and the axis.

Further, as a preferred embodiment, the above-mentioned included angle is preferably not less than 0 degrees.

Further, as a preferred embodiment, the compressing portion 6 may preferably include a plurality of sequentially connected portions sequentially disposed in a direction in which the balance portion 7 is away from the diffusion portion 8, that is, a first portion, a second portion, a third portion, and the like sequentially connected, and the inclination of the inner wall of each adjacent two portions is different.

Further, as a preferred embodiment, at least one of the first portion and the second portion is an arcuate necked-down structure.

Further, as a preferred embodiment, an insulation layer is disposed in the air mixing cavity 3.

Further, as a preferred embodiment, the inner contour of the balance 7 is constantly arranged in the first direction. Further, the radial cross section of the balance portion 7 is unchanged in the first direction, and the balance portion 7 may be preferably formed in a straight pipe-like structure extending in the first direction as a whole.

Further, as a preferred embodiment, the second mixing and homogenizing system 5 includes: at least one low-resistance blending device 9, the low-resistance blending device 9 is provided with at least two air guiding areas, and the two air guiding areas are used for guiding the air flow to move along two different directions and collide.

Further, as a preferred embodiment, a plurality of low-resistance blending devices 9 may be disposed at the windward side of the second wind mixing and blending system 5, and the plurality of blending devices are matched with the radial section of the wind mixing cavity 3 at the same.

Further, as a preferred embodiment, the low-resistance homogenizer 9 comprises: the air guide device comprises a separation structure 10 and a plurality of guide vanes 11, wherein at least two adjacent air guide areas are formed in the separation structure 10, the two adjacent air guide areas are sequentially sleeved from inside to outside, each air guide area is internally provided with the plurality of guide vanes 11, and the two adjacent air guide areas are used for guiding air flow to move along different spiral directions.

Further, as a preferred embodiment, the air guiding part is a part with two ends communicated in the first direction, preferably the partition structure 10 includes a plurality of annular structures, and the annular structures are arranged in a contour size and are sequentially overlapped from inside to outside with the axis of the corresponding low-resistance homogenizer 9 as the center; so that in the radial direction, the air guiding area is formed between every two adjacent annular structures and is divided into a plurality of parts after the air flow passes through the separation structure 10; wherein, two airflows of two adjacent wind guiding areas move along different spiral directions. Further, the plurality of guide vanes 11 in each air guiding area are sequentially arranged along the annular direction of the corresponding air guiding area, each guide vane 11 is in a curved shape, and the bending directions of the guide vanes 11 of the adjacent air guiding areas are different, so that the spiral directions of the airflows of the corresponding air guiding areas are different; preferably, the air flow in one of the two adjacent air guiding areas moves along a first spiral direction, the air flow in the other of the two adjacent air guiding areas moves along a second spiral direction, and the first spiral direction and the second spiral direction are opposite in rotation, so that the two air flows strike and are uniformly mixed.

Further, as a preferred embodiment, the fresh air system 1 includes: at least one fresh air collecting unit 12, the output end of the fresh air collecting unit 12 stretches into the air mixing cavity 3 and is arranged close to the first air mixing and homogenizing system 4.

Further, as a preferred embodiment, the fresh air collecting unit 12 includes: the air mixing device comprises a fan 13, a nozzle valve 14 and a nozzle air pipe 15, wherein the output end of the fan 13 is connected with one end of the nozzle air pipe 15, the other end of the nozzle air pipe 15 extends into the air mixing cavity 3, and the nozzle valve 14 is arranged on the nozzle air pipe 15. Further, the fresh air flow is accelerated to be injected into the first air mixing and homogenizing system 4 through the nozzle air pipe 15, so that a certain negative pressure can be generated at the position passing through the input end of the air return system 2, and the introduction of the air return flow is driven.

Further, as a preferred embodiment, the nozzle plenum 15 extends at least a distance in the first direction within the mixing chamber 3.

Further, as a preferred embodiment, two or more fresh air collecting units 12 may be disposed in parallel, at least two fresh air collecting units 12 are all communicated with one end of the air mixing cavity 3, and the nozzle air pipes 15 of at least two fresh air collecting units 12 are all extended to be disposed close to the air mixing cavity 3. Further, the air quantity and the input of different airflows can be better controlled through the arrangement of the plurality of fresh air collecting units 12; meanwhile, when one of the fresh air collecting units 12 does not operate, the nozzle air pipe 15 can be closed through the nozzle valve 14, so that the internal air flow is prevented from flowing backwards into the fresh air collecting unit 12 which does not operate; and when only a new wind collecting unit 12 is provided, the corresponding nozzle valve 14 may not be provided.

Further, as a preferred embodiment, the fan 13 is a variable frequency fan 13, and the nozzle valve 14 is an adjustable air valve.

Further, as a preferred embodiment, the return air system 2 comprises: the air return port 16 and the air valve 17, the air return port 16 sets up on the one end of mixing the wind cavity 3, and the air valve 17 is installed on the air return port 16. Further, the damper 17 is an adjustable damper.

Further, as a preferred embodiment, the axis of the return air inlet 16 is disposed along a second direction, which is perpendicular to the first direction.

Further, as a preferred embodiment, the method further comprises: the filter system 18, the filter system 18 is connected to the input of fresh air system 1, and the filter system 18 is used for filtering the air flow.

Further, as a preferred embodiment, the filter system 18 includes: the fresh air system comprises a filter cavity 19 and a filter module 20, wherein one end of the filter cavity 19 is communicated with the fresh air system 1, an air inlet is formed in the other end of the filter cavity 19, and the filter module 20 is arranged in the filter cavity 19. Further, the filter module 20 divides the interior of the filter cavity 19 into a first space and a second space, the first space is close to the fresh air system 1, and the second space is close to the air inlet; and then the external fresh air flow enters the fresh air system 1 after being filtered by the filter module 20 in the filter cavity 19 under the action of the fresh air system 1, and dust removal is performed.

Further, as a preferred embodiment, the filter module 20 may preferably be an inertial dust collector.

Further, as a preferred embodiment, the filter system 18 further comprises: the sand discharging fan 21, the sand discharging fan 21 sets up in the bottom of filter chamber 19, and the input of sand discharging fan 21 is close to the downside setting of filtration module 20, and the output of sand discharging fan 21 passes filter chamber 19 outwards extension setting. Further, the fresh air flow is filtered after being filtered by the filter module 20, and the sand contained therein is left in the first portion, and the sand in the first portion is collected by the sand discharge fan 21 to be discharged out of the entire filter system 18.

Further, as a preferred embodiment, the input end of the sand-discharging fan 21 is disposed at the bottom of the filter cavity 19, and the output end of the sand-discharging fan 21 can be extended to the position designated by the user through a pipeline for sand-discharging.

Further, as a preferred embodiment, the filter system 18 further comprises: shutter 23, shutter 23 is installed in air intake department.

Further, as a preferred embodiment, the method further comprises: the support 25, support 25 sets up in the inboard of mixing wind cavity 3, and the tip of nozzle tuber pipe 15 is installed on support 25. Further, the bracket 25 is designed to be hollowed out to reduce the influence on the air flow.

Further, as a preferred embodiment, in the first embodiment of the present utility model as shown in fig. 1, further includes: fresh air cavity 22, fresh air cavity 22 set up in the one end that mixes wind cavity 3, and fresh air system 1 installs in fresh air cavity 22, and fresh air cavity 22 and filter chamber 19 intercommunication setting.

Further, as a preferred embodiment, the fresh air chamber 22 may be preferably formed as a single piece with a partition therebetween with respect to the air mixing chamber 3.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the embodiments and the protection scope of the present utility model.

The present utility model has the following embodiments based on the above description:

in a further embodiment of the utility model, which is a second embodiment of the utility model as shown in fig. 4, it differs from the first embodiment in that the fresh air chamber 22 is not required, and the filter chambers 19 are directly connected to the respective input ends of the fresh air collecting units 12 via pipes.

In a further embodiment of the utility model, the number of fresh air collection units 12 is preferably four.

In a further embodiment of the present utility model, as shown in the above second embodiment, the first air mixing and homogenizing part may be integrally formed with the air mixing cavity 3. Further, in other words, the corresponding compressing portion 6, balancing portion 7 and diffusing portion 8 can be formed by recessing the air mixing cavity 3 at the corresponding position, so that nesting in the structure is reduced, and installation-like manufacturing is facilitated.

The foregoing description is only illustrative of the preferred embodiments of the present utility model and is not to be construed as limiting the scope of the utility model, and it will be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present utility model, and are intended to be included within the scope of the present utility model.

Claims (10)

1. A cold and hot air mixing and homogenizing device, which is characterized by comprising: the novel air conditioner comprises a fresh air system, an air return system, an air mixing cavity, a first air mixing and mixing system, a second air mixing and mixing system and an air supply opening, wherein the fresh air system and the air return system are arranged at one end of the air mixing cavity, the air supply opening is arranged at the other end of the air mixing cavity, and the first air mixing and mixing system and the second air mixing and mixing system are sequentially arranged in the air mixing cavity along a first direction;

wherein, the first mixing system includes: the compression part, the balance part and the diffusion part are sequentially connected along the first direction, the inner outline of the compression part is gradually reduced along the first direction, and the inner outline of the diffusion part is gradually increased along the first direction.

2. The cold and hot air mixing device according to claim 1, wherein the inner contour of the balancing portion is constantly disposed along the first direction.

3. The cold and hot air mixing device according to claim 1, wherein the compression portion includes at least: a first portion and a second portion connected to each other, an inclination of an inner wall of the first portion being different from an inclination of an inner wall of the second portion.

4. The cold and hot air mixing device according to claim 1, wherein the second air mixing system comprises: the low-resistance blending device is provided with at least two air guide areas, and the two air guide areas are used for guiding airflow to move along two different directions and collide.

5. The cold and hot air mixing and homogenizing apparatus of claim 4, wherein the low resistance homogenizer comprises: the air guide device comprises a separation structure and a plurality of air guide sheets, wherein at least two adjacent air guide areas are formed in the separation structure, the two adjacent air guide areas are sequentially sleeved from inside to outside, each air guide area is internally provided with a plurality of air guide sheets, and the two adjacent air guide areas are used for guiding air flow to move along different spiral directions.

6. The cold and hot air mixing device according to claim 1, wherein the fresh air system comprises: and the output end of the fresh air collecting unit stretches into the air mixing cavity and is close to the first air mixing and homogenizing system.

7. The cold and hot air mixing device according to claim 6, wherein the fresh air collecting unit comprises: the air mixing device comprises a fan, a nozzle valve and a nozzle air pipe, wherein the output end of the fan is connected with one end of the nozzle air pipe, the other end of the nozzle air pipe stretches into the air mixing cavity, and the nozzle valve is arranged on the nozzle air pipe.

8. The cold and hot air mixing device according to claim 1, wherein the return air system comprises: the air return port is arranged at one end of the air mixing cavity, and the air valve is arranged on the air return port.

9. The cold and hot air mixing device according to claim 1, further comprising: the filtering system is connected to the input end of the fresh air system and is used for filtering air flow.

10. The cold and hot air mixing device according to claim 9, wherein the filtering system comprises: the fresh air system comprises a filter cavity and a filter module, wherein one end of the filter cavity is communicated with the fresh air system, an air inlet is formed in the other end of the filter cavity, and the filter module is arranged in the filter cavity.

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