CN214536761U

CN214536761U - Air outlet device for air conditioning system

Info

Publication number: CN214536761U
Application number: CN202023195328.3U
Authority: CN
Inventors: 刘芝磊; 张旭东; 刘畅; 郑军妹
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-10-29
Anticipated expiration: 2030-12-25

Abstract

The utility model relates to an air outlet device for an air conditioning system, which comprises an air duct (1) with an air inlet (11) and an air outlet (12), wherein at least part of the inside of the air duct (1) is a narrowing section (13) with the caliber gradually reduced from the air inlet (11) to the air outlet (12) in the air flow direction, and an injection hole (16) is arranged at the small-caliber part of the peripheral wall of the air duct (1) corresponding to the narrowing section (13); the method is characterized in that: the air duct also comprises an adjusting piece arranged in the air inlet (11) of the air duct (1), and the adjusting piece is arranged to increase or decrease the air inlet area of the air inlet (11). Compared with the prior art, the air flow injection coefficient can be improved without changing the rotating speed of the air supply fan.

Description

Air outlet device for air conditioning system

Technical Field

The utility model belongs to the technical field of air conditioning, concretely relates to air-out device for air conditioning system.

Background

An air conditioning system is a system or equipment for adjusting physical or chemical indexes of indoor air, such as an air conditioner, a cooling fan, etc. for adjusting temperature and/or humidity. The existing air conditioners, cooling fans and the like have the conditions of low air supply temperature and large temperature difference with indoor temperature, and cold air directly blows to human bodies to cause discomfort.

For reducing the air supply temperature difference, the existing scheme is as follows: 1. the running load of the compressor is reduced, and the cold quantity of the refrigerant in the heat exchanger is reduced, so that the temperature of the supplied air is improved; the method can cause the energy efficiency of the air conditioning system to be reduced; 2. the indoor return air is led to be mixed with the cold air passing through the heat exchanger by additionally arranging an injection air mixing mechanism and/or a fan, so that the air supply temperature is improved. The structure disclosed in the invention patent application of application No. CN201910045831.3, namely, the indoor unit of a vertical air conditioner (application publication No. CN111442385A), comprises a shell, a laminar flow fan, a centrifugal fan and an injection air mixing mechanism, wherein the shell is provided with a laminar flow air outlet, a mixing air outlet, a natural air inlet and a heat exchange air inlet; the laminar flow fan is configured to enable part of air in the cavity to form laminar flow wind by utilizing a viscosity effect and enable the laminar flow wind to be blown out from the laminar flow air outlet, and the laminar flow fan comprises a laminar flow fan with a plurality of plane annular discs; the centrifugal fan is configured to suck partial air in the cavity and drive the partial air to flow to the ejection air mixing mechanism; the ejection air mixing mechanism is configured to promote ambient air to enter the cavity from the natural air inlet, and mix the ambient air entering the cavity with air flow blown out by the centrifugal fan to form mixed air to be blown out from the mixed air outlet.

The above application enables a comfortable wind that forms heat without dryness, cool without cooling. But the centrifugal fan and the ejection air mixing mechanism are additionally arranged to eject indoor air, so that the manufacturing cost is increased, and the volume and the running noise of the device are increased.

Therefore, the utility model patent No. ZL201921016753.6, "an induced isolation type anti-dewing air supply opening" (No. CN210801547U), discloses a structure of an air supply opening, which includes: the air supply device comprises an air supply outer shell, a central isolation cavity, a return air isolation cavity, an air supply outlet and a return air inlet; the central isolation cavity carries out temperature separation with primary cold wind, indoor return air, and the primary air supply duct between air supply shell body and the central isolation cavity produces the negative pressure and draws indoor return air to inject to the central isolation cavity, return air keep apart the indoor return air duct between the cavity and mix the back with cold wind and blow from the secondary air supply duct to indoor, avoids air supply temperature to hang down the problem that leads to the wind gap dewfall and influence personnel's comfort level excessively. This patent need not to set up in addition and draws and penetrate the mechanism and can realize drawing penetrating indoor return air, simple structure.

In the fluid injection device, an injection coefficient, namely the ratio of the volume flow of working fluid to the volume flow of injected fluid, is an important parameter for judging the working efficiency of the injection device, in the prior art, in order to improve the injection coefficient of air flow, the rotating speed of a fan needs to be improved, and the improvement of the rotating speed of the fan brings the defects of high noise and high energy consumption.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the first technical problem to provide a need not to change air supply fan's rotational speed and can improve the air conditioning system's of air current injection coefficient air-out device to prior art's current situation.

The utility model provides a technical scheme that above-mentioned first technical problem adopted does: an air outlet device for an air conditioning system comprises an air duct with an air inlet and an air outlet, wherein at least part of the inside of the air duct is a narrowed section with the caliber gradually reduced in the airflow direction from the air inlet to the air outlet, and an injection hole is formed in the peripheral wall of the air duct at the small caliber corresponding to the narrowed section; the method is characterized in that: the air inlet of the air duct is provided with an air inlet, and the air inlet area of the air inlet can be increased or decreased by the adjusting piece.

The adjusting part can be a valve and other structures for adjusting the air inlet area, preferably, the adjusting part comprises a fixed part and a rotating part which are distributed side by side along the air flow direction, the fixed part is fixedly arranged in the air channel, the fixed part comprises at least three wind shields distributed at intervals along the circumferential direction, and a ventilation gap is formed between every two adjacent wind shields; the rotating part is rotatably connected in the air duct and comprises at least three blades which are distributed on the periphery of the central rotating shaft at intervals, and the blades can alternately shield and expose the ventilation gap in the rotating process. So, just can realize the regulation of air inlet area through the slow rotation of blade, and the regulation of air inlet area makes the constantly changing between maximum lift and minimum lift of air supply lift of air outlet department, and then is favorable to room temperature homogeneity.

Furthermore, the injection hole is obliquely arranged from outside to inside towards the airflow direction. Therefore, the direction of the airflow in the air duct is basically consistent with the direction of the ejected airflow, and the ejection ratio of the airflow can be further improved.

Preferably, the inner part of the air duct is a transition section with basically the same caliber along the airflow direction, and the first end of the transition section is connected with the small caliber end of the narrowing section. The low-temperature air flow and the injection air flow are uniformly mixed to form the medium-temperature air supply air flow.

Further preferably, the inner part of the air duct is a diffuser section with gradually increasing caliber along the airflow direction, the small caliber end of the diffuser section is connected with the second end of the transition section, and the large caliber end of the diffuser section is adjacent to the air outlet.

In each of the above schemes, preferably, the air duct is integrally cylindrical, the air inlet and the air outlet are located at two ends of the air duct, and the injection holes are distributed along the circumferential direction of the air duct.

Preferably, the air duct is integrally in a grid shape formed by at least two air plates which are distributed side by side at intervals, and the injection hole is formed in the outer air plate.

And finally, a sound insulation layer is arranged on the inner wall of the air duct. The noise is reduced.

Compared with the prior art, the utility model has the advantages of: at least part of the air channel is designed into a narrowing section and is provided with an injection hole, so that indoor air can be injected through the injection hole when air flows pass through the narrowing section, and the temperature and the humidity of the air flows are adjusted; through setting up the regulating part that can adjust the air inlet area in air inlet department for when the increase of air inlet area, the air pressure increase in the air inlet increase and then the wind channel, the wind pressure increase can improve the ejection coefficient of air current, and then improves the efficiency of drawing of air current, and need not to change air supply fan's rotational speed. And the adjusting piece also realizes the continuous change of the air supply lift at the air outlet between the maximum lift and the minimum lift, thereby being beneficial to the uniformity of the room temperature. And the indoor air is introduced into the injection air supply, so that the air supply volume is increased, and the air supply lift is improved. Simultaneously the utility model discloses simple structure, low in manufacturing cost and be convenient for implement.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;

fig. 2 is a schematic partial structural view of a first embodiment of the present invention;

fig. 3 is a schematic view of a portion of another view angle according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a portion of a structure at a second viewing angle according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a second embodiment of the present invention;

fig. 6 is a front view of the second embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1-4, for the utility model discloses a preferred embodiment one of an air-out device for air conditioning system, this air-out device includes wind channel 1 and regulating part.

The whole air duct 1 is in a cylindrical shape with an axial through, an air inlet 11 and an air outlet 12 are arranged at two ends of the air duct 1, a narrowing section 13 with a gradually reduced caliber, a transition section 14 with a basically same caliber and a diffusion section 15 with a gradually increased caliber are sequentially arranged in the air duct 1 from the air inlet 11 to the air outlet 12 in the air flow direction, two ends of the transition section 14 are respectively connected with a small-caliber end of the narrowing section 13 and a small-caliber end of the diffusion section 15, and a large-caliber end of the diffusion section 15 is adjacent to the air outlet 12. And the small-caliber part of the peripheral wall of the air duct 1 corresponding to the narrowing section 13 is provided with an injection hole 16, and the injection hole 16 is obliquely arranged from outside to inside towards the airflow direction. The injection hole 16 is a passage for indoor air to enter the air duct 1. And the injection holes 16 are distributed along the circumferential direction of the air duct 1. For noise reduction, the packing of 1 inner wall in wind channel has inhales sound insulation material and forms the puigging, so become a silence case with wind channel 1 itself, compare in prior art's the design of adding the silence case in addition at the air outlet, more province space.

The adjusting piece is arranged in the air inlet 11 of the air duct 1 to adjust the air inlet area of the air inlet so as to increase or decrease the air inlet area. The adjusting part comprises a fixed part 2 and a rotating part 3 which are distributed side by side along the airflow direction, the fixed part 2 is fixedly arranged in the air duct 1, the fixed part 2 comprises at least three wind shields 21 which are distributed at intervals along the circumferential direction, and a ventilation gap is formed between the adjacent wind shields 21; the rotating part 3 is rotatably connected in the air duct 1, and the rotating part 3 comprises at least three blades 31 which are distributed on the periphery of the central rotating shaft at intervals, and the blades 31 can alternately shield and expose the ventilation gap in the rotating process. For example, when the vanes 31 rotate to the positions between the wind shields 21, the ventilation gaps are blocked to reduce the intake air amount, and when the vanes 31 rotate to the positions of the wind shields 21, the ventilation gaps are exposed to increase the intake air amount. So air supply fan can keep invariable rotational speed, rotates 3 at the uniform velocity rotations, can be in order to change the air supply lift, and is littleer to air supply fan's loss like this, and the energy consumption is lower, and whole room temperature distribution is more even. The above-mentioned rotary member 3 may be driven by a motor or the like. And when the blade 31 rotates to expose the ventilation gap from shielding the ventilation gap, the wind pressure in the air duct 1 is suddenly increased, and the injection coefficient of the airflow can be effectively improved.

When the air conditioning system is in a refrigeration mode, cold air passes through the adjusting assembly and enters the air duct 1, the air speed of the cold air is increased when the cold air passes through the narrowing section 13, high-speed airflow is formed at the small-caliber part of the narrowing section 13, meanwhile, a negative pressure area is formed near the small-caliber part of the narrowing section 13, so that indoor air is sucked into the air duct 1 from the injection hole 16 and is fully mixed with the cold air at the transition section 14 to form medium-temperature air supply airflow, and finally the air is sent to the indoor through the diffusion section 15, and the air supply temperature can reduce discomfort caused by direct blowing of a human body. Similarly, in the heating mode, the air flow blowing out is performed in the above manner, and the air flow blowing out is formed without drying.

Example two:

as shown in fig. 5 and 6, for the second preferred embodiment of the air outlet device for an air conditioning system of the present invention, the air outlet device is substantially the same as the first embodiment, and the difference lies in that in this embodiment, the whole air duct 1 is in the shape of a grid formed by three air plates 1a arranged side by side and distributed at intervals, and the injection holes 16 are formed in the two air plates 1a at the outermost side.

Claims

1. An air outlet device for an air conditioning system comprises an air duct (1) with an air inlet (11) and an air outlet (12), wherein at least part of the inside of the air duct (1) is a narrowing section (13) with the caliber gradually reduced in the airflow direction from the air inlet (11) to the air outlet (12), and an injection hole (16) is formed in the peripheral wall of the air duct (1) at least at the small caliber position corresponding to the narrowing section (13); the method is characterized in that:

the air duct also comprises an adjusting piece arranged in the air inlet (11) of the air duct (1), and the adjusting piece is arranged to increase or decrease the air inlet area of the air inlet (11).

2. The air outlet device of claim 1, characterized in that: the adjusting part comprises a fixed part (2) and a rotating part (3) which are distributed side by side along the airflow direction, the fixed part (2) is arranged in the air duct (1), the fixed part (2) comprises at least three wind shields (21) which are distributed at intervals along the circumferential direction, and a ventilation gap is formed between every two adjacent wind shields (21); the rotating piece (3) is rotatably connected in the air duct (1), the rotating piece (3) comprises at least three blades (31) which are distributed on the periphery of the central rotating shaft at intervals, and the blades (31) can alternately shield and expose the ventilation gap in the rotating process.

3. The air outlet device of claim 1, characterized in that: the injection hole (16) is obliquely arranged from outside to inside towards the airflow direction.

4. The air outlet device of claim 1, characterized in that: the local part inside the air duct (1) is a transition section (14) with basically the same caliber along the airflow direction, and the first end of the transition section (14) is connected with the small caliber end of the narrowing section (13).

5. The air outlet device of claim 4, characterized in that: the inner part of the air duct (1) is a diffusion section (15) with the caliber gradually increasing along the airflow direction, the small-caliber end of the diffusion section (15) is connected with the second end of the transition section (14), and the large-caliber end of the diffusion section (15) is adjacent to the air outlet (12).

6. An air outlet device according to any one of claims 1 to 5, characterized in that: the air duct (1) is integrally cylindrical, the air inlet (11) and the air outlet (12) are located at two ends of the air duct (1), and the injection holes (16) are distributed along the circumferential direction of the air duct (1).

7. An air outlet device according to any one of claims 1 to 5, characterized in that: the air duct (1) is integrally in a grid shape formed by at least two air plates (1a) which are distributed side by side at intervals, and the injection holes (16) are formed in the outer air plates.

8. An air outlet device according to any one of claims 1 to 5, characterized in that: and a sound insulation layer is arranged on the inner wall of the air duct (1).