A steady-state displacement flow air conditioning system

Abstract

The present invention discloses a steady-state displacement flow air conditioning system including a steady-state displacement flow air supply device, an air supply channel device arranged at one end of the air outlet of the steady-state displacement flow air supply device, a laminar flow return air channel device arranged at one end of the air inlet of the steady-state displacement flow air supply device, and an attachment plate; the steady-state displacement flow air supply device includes a fan, a first high-efficiency filter and a second high-efficiency filter connected to the air inlet of the fan, and a heat exchanger connected to the air outlet of the fan; the air supply channel device is one of a positive pressure air supply channel device and a reflective air supply channel device; the return air port is arranged at the bottom of the clean room side wall in the diagonal direction of the laminar flow air supply channel device. The present invention utilizes a stable laminar flow for ventilation, has high ventilation efficiency, significantly reduces the system air supply volume, and the required fan power is relatively low, so the fan used is small in size and has a wider range of applications; it has the advantages of no wind feeling, good cleaning effect, can significantly reduce the concentration of pollutants, and save energy.

Description

Technical Field

[0001] The invention relates to the technical field of indoor air purification, and in particular to a steady-state displacement flow air conditioning system. Background Art

[0002] People live indoors most of the time. From the perspective of the dose of human pollutants, indoor air pollution has a more serious impact on human health. Indoor air quality is directly related to the source of pollutants. Outdoor pollutants enter the room through doors and windows, gaps in the wall, and the air inlet of the ventilation system, while indoor sources enter the air directly indoors. At present, fine particles (PM2.5) have become the main atmospheric pollutants that endanger health. Under natural ventilation conditions, the concentration of indoor fine particles is directly positively correlated with the concentration of outdoor PM2.5. Indoor buildings or facilities, personnel activities or production can also produce PM2.5. For example, smoking, cooking, heating processes, etc. can cause the indoor particle concentration to increase several times or even dozens of times in a short period of time. Personnel activities, cleaning, bathing and other activities can also cause the resuspension of particles. For particles with a particle size of 2~10μm, about 57%~80% of the share comes from indoor activities. The current outdoor PM2.5 concentration is high, and corresponding PM2.5 pollution will also be generated indoors.

[0003] At present, the main method to improve indoor air is to use ventilation system to ensure the cleanliness of indoor air, use air conditioner or air purifier to absorb indoor polluted air, and then inject clean air back into the room after filtering through filter element, so as to gradually dilute the indoor polluted air and reduce the concentration of indoor fine particles; at the same time, in order to achieve the cleaning effect, the wind speed is usually increased to increase the air supply distance to increase the ventilation rate.

[0004] Factories, schools and offices are places where people work and live together. Heating and air conditioning are mainly used for heating in winter and cooling in summer in these places. However, people often have obvious periodicity in these places. There are dense crowds during the day and no one at night. Continuing to heat and cool these places is a waste of social resources. When heating or cooling is performed periodically, it often takes a long time to achieve the desired effect. At the same time, the heating and cooling effects in different areas are also different. The human body can clearly feel the noise of the air conditioner, and the wind feeling is obvious, especially in the direction of the air supply of the air conditioner, which may cause discomfort or even illness. Summary of the invention

[0005] The present invention aims to provide a steady-state displacement flow air conditioning system which can quickly ventilate and improve indoor temperature and air quality quickly.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] A steady-state replacement flow air conditioning system, comprising a steady-state replacement flow air supply device, an air supply channel device arranged at one end of an air outlet of the steady-state replacement flow air supply device, and a laminar flow return air channel device arranged at one end of an air inlet of the steady-state replacement flow air supply device;

[0008] The steady-state replacement flow air supply device comprises a fan, a first high-efficiency filter and a second high-efficiency filter connected to the air inlet of the fan, and a heat exchanger connected to the air outlet of the fan;

[0009] The second high efficiency filter is in communication with the outside of the clean room;

[0010] The air supply channel device is arranged along the top of the side wall on one side of the longer length direction of the clean room;

[0011] The air supply channel device is one of a positive pressure air supply channel device and a reflective air supply channel device;

[0012] The positive pressure air supply channel device comprises a first static pressure air supply pipe, a pressure equalizing plate arranged at the lower end of the first static pressure air supply pipe, and a first laminar flow air supply pipe arranged at the lower side of the pressure equalizing plate;

[0013] The pressure equalizing plate is evenly distributed with first pressure equalizing holes;

[0014] The cross section of the first laminar air supply pipe is a right-angle sector;

[0015] The arc surface of the first laminar air supply pipe is uniformly distributed with first laminar air supply holes;

[0016] The arc-shaped surface of the first laminar air supply duct protrudes toward the center of the clean room;

[0017] The axis of the first laminar air supply hole is perpendicular to the arc surface of the first laminar air supply pipe;

[0018] The reflective air supply channel device includes a second laminar air supply pipe and a second static pressure air supply pipe arranged in the second laminar air supply pipe;

[0019] The cross section of the second laminar air supply pipe is a right-angle fan;

[0020] The arc surface of the second laminar air supply pipe is uniformly distributed with second laminar air supply holes;

[0021] The second static pressure air supply pipe is evenly distributed with second pressure equalizing holes;

[0022] The second pressure equalizing hole is arranged on a side facing away from the second laminar air supply hole;

[0023] The axis of the second laminar air supply hole is perpendicular to the arc surface of the second laminar air supply pipe;

[0024] The arc-shaped surface of the second laminar air supply duct protrudes toward the center of the clean room;

[0025] The laminar return air channel device is arranged on the side wall on the other side of the longer length direction of the clean room;

[0026] The laminar return air channel device comprises a return air duct connected to the first high efficiency filter and a return air port arranged at the lower end of the return air duct;

[0027] The surface of the return air outlet is evenly distributed with return air holes;

[0028] The return air port is arranged at the bottom of the clean room side wall in the diagonal direction of the laminar air supply channel device.

[0029] As a further improvement of the present invention, the steady-state replacement flow air supply device further includes a casing disposed outside;

[0030] The heat exchanger includes at least one of the following: an evaporator, a condenser and a heating wire.

[0031] As a further improvement of the present invention, a pressurizing layer is provided on the upper side of the pressure equalizing plate or on the outer side of the second static pressure air supply pipe, which is used to increase the gas pressure difference on both sides of the pressure equalizing plate so that the gas flow rate at each point on the pressure equalizing plate is balanced;

[0032] The pressurization layer is selected from at least one of the following: glass fiber cloth, polyester fiber cloth and nylon cloth.

[0033] As a further improvement of the present invention, the laminar return air channel device further includes a primary filter arranged above the return air outlet in the return air duct;

[0034] The primary filter comprises at least one of the following: a bag filter, a pleated filter and a plate filter;

[0035] A sealing ring is arranged on the peripheral wall of the primary filter to ensure that all the air flowing through the return air duct is filtered by the primary filter.

[0036] As a further improvement of the present invention, the return air port is slidably connected to the lower end of the return air duct;

[0037] The return air duct includes a return air base plate for fixing on the side wall of the clean room and a C-shaped enclosure plate closed and connected to the return air base plate;

[0038] Slide grooves are arranged on both sides of the return air base plate;

[0039] The lower end of the return air base plate protrudes from the lower edge of the arc-shaped enclosure plate;

[0040] The return air outlet is an arc-shaped cover that matches the return air duct, and the inner wall of the arc-shaped cover fits the outer wall of the arc-shaped enclosure;

[0041] The inner walls of the arc-shaped cover are provided with clamping strips which are slidably matched with the sliding grooves.

[0042] As a further improvement of the present invention, a filter screen is arranged inside the return air outlet to prevent insects and ants from entering the laminar return air channel device.

[0043] As a further improvement of the present invention, the steady-state displacement flow air conditioning system further comprises an attachment plate arranged on the outside of the air supply channel device;

[0044] The attachment plate is fixedly connected to the side wall or the top of the clean room;

[0045] The attachment plate is provided with a plurality of ridge-shaped drainage strips;

[0046] The higher end of the guide strip is arranged corresponding to the first air supply hole or the second air supply hole;

[0047] The other end of the drainage strip is tangent to the side wall or the ceiling of the clean room.

[0048] The present invention belongs to a laminar flow clean room, and its working principle is as follows:

[0049] The air supply holes of the laminar clean room are set at the top of the side wall of the clean room, and the air supply holes are set perpendicular to the arc surface of the laminar air supply pipe, so that the clean air is pushed forward at a low speed along the normal direction of the arc surface. Due to the slow propulsion speed of the air, the large number of air supply holes, the small spacing and the small difference in the air output of each air supply hole, the gas turbulence generated when the air is pushed forward is small, no disturbance will be generated, and the dirty air will not mix with the clean air; in addition, the propulsion speed of the air is greater than the free diffusion speed of fine particles, and the clean air continuously sent out from the air supply holes is near the laminar air supply pipe. A high-pressure area is formed near the clean room, which presses the dirty gas in the clean room to the return air outlet set diagonally with the laminar air supply duct, and then is purified through the return air duct; air is also a fluid. When clean air encounters an object that hinders its progress, it becomes sticky with the object and moves forward along the surface of the object, forming an adhesion effect. The internal surfaces of the clean room, including the walls, ceiling and ground, will form an adhesion effect. Therefore, the non-parallel laminar flow field formed by the clean air in the clean room will not produce dead zones in the indoor space, nor will it cause large-scale mixing of clean air and fine particles.

[0050] In summary, laminar flow clean rooms have the characteristics of stable flow field, no turbulence, high ventilation efficiency, simple structure, and low construction and operating costs.

[0051] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0052] The steady-state replacement flow air supply device of the present invention supplements the clean air filtered from the outside through a second high-efficiency filter, and enters the clean room together with the original clean room air filtered through the first high-efficiency filter through the air supply channel device, so that the gas pressure in the clean room is higher than the outdoor atmospheric pressure. The indoor air can only flow to the outside, and the dirty air from the outside will not enter the room through doors, windows and narrow gaps, ensuring that the room is in a positive pressure environment; a steady-state replacement flow air supply device is adopted, a laminar flow air supply channel device is arranged on the top of the side wall of the clean room, and a laminar flow return air channel device is arranged at the bottom of the clean room in a diagonal direction thereof, so that the shortest path side length of the clean air in the room is improved, and the ventilation efficiency is improved; a reflective air supply channel device is adopted, and the second static pressure air supply pipe is arranged in the second laminar flow air supply pipe to save space; the second pressure equalizing hole arranged on the second static pressure air supply pipe faces away from the second laminar flow air supply hole, and the clean air sent out by the second static pressure air supply pipe is reflected and then returned from the second laminar flow air supply pipe The holes flow out, which increases the residence time of clean air in the second laminar air supply duct, improves the balance of pressure at various places in the second laminar air supply duct, and makes the flow rate, flow rate and flow direction of clean air delivered from various places in the second laminar air supply duct balanced; the laminar air supply channel device is arranged on the top of the side wall of the clean room, and the discharged clean air forms a stable clean air high-pressure belt, and the return air outlet discharges the dirty air in the clean room, and forms an air low-pressure zone near the return air outlet. The pressure difference between the clean air high-pressure belt and the air low-pressure zone makes the clean air in the high-pressure belt flow spontaneously to the low-pressure zone to form a stable laminar gas flow field; a heat exchanger is arranged in the steady-state replacement flow air supply device, and the purified air is heat-exchanged by the heat exchanger to further improve the indoor ambient temperature. The heat exchanger is arranged at the end of the steady-state replacement flow air supply device, and the air entering the heat exchanger makes the clean air, which will not affect the service life of the heat exchanger. At the same time, the heat exchanger is close to the air supply channel device to reduce heat loss; The steady-state displacement flow air supply device is provided with a casing, and the fan, the first high-efficiency filter, the second high-efficiency filter and the heat exchanger are arranged in the casing, with a high degree of integration and convenient installation and transportation; a pressurization layer is arranged in the laminar flow air supply channel device, which can increase the gas pressure difference before and after the pressurization layer, so that the gas pressure on the high-pressure side of the pressurization layer is uniform; a primary filter is arranged at the lower part of the return air duct, which can preliminarily filter large particles and dust, and improve the service life and filtering efficiency of the first high-efficiency filter; the return air port is slidably connected to the lower end of the return air duct, which is convenient for replacing the primary filter; an attachment plate is arranged on the outside of the air supply channel device, It can quickly guide clean air to adhere to the side walls and ceiling of the clean room, and reduce the dead space in the inner room, thereby improving the ventilation efficiency; a gas flow regulating valve is set on one side of the second high-efficiency filter, which controls the amount of air added into the room by adjusting the size of the gas flow, ensures that the pressure difference between indoor and outdoor is balanced, and reduces the power consumption of the system; since this system uses stable laminar flow for ventilation, the ventilation efficiency is high, so the air supply volume of this system is significantly reduced compared with the traditional air-conditioning system, and the required fan power is relatively low, so the fan used is smaller in size and has a wider range of use;This system uses a low-speed flow field for ventilation. The human body cannot feel the flow of air, and there is no wind feeling, which will not cause discomfort to the human body. In summary, this system has the characteristics of no wind feeling, good cleaning effect, and can significantly control the concentration of fine particles (PM2.5) and save energy. ; BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Attached Figure 1 It is a schematic diagram of the structure of the present invention (i.e. Figure 2 BB cross-sectional view);

[0054] Attached Figure 2 For the present invention Figure 1 AA section view;

[0055] Attached Figure 3 For the present invention Figure 1 A top view of

[0056] Attached Figure 4 The structural diagram of the positive pressure air supply channel device of the present invention (i.e. Figure 1 ); a local enlarged view of location I of FIG.

[0057] Attached Figure 5 It is a structural diagram of the reflective air supply channel device of the present invention;

[0058] Attached Figure 6 is a cross-sectional view of the laminar return air duct device of the present invention (i.e. Figure 1 (a partial enlarged view of location II);

[0059] Attached Figure 7 It is a structural diagram of the laminar return air channel device of the present invention;

[0060] Attached Figure 8 is a cross-sectional view of the return air duct of the present invention;

[0061] Attached Fig. 9 For the present invention Figure 7 CC section view;

[0062] In the accompanying drawings: 1 side wall, 2 room top, 3 fan, 4 heat exchanger, 5 first high efficiency filter, 6 second high efficiency filter, 7 gas flow regulating valve, 8 casing, 9 first static pressure air supply pipe, 10 equalizing plate, 11 first equalizing hole, 12 first laminar air supply pipe, 13 first laminar air supply hole, 14 second laminar air supply pipe, 15 second laminar air supply hole, 16 second static pressure air supply pipe, 17 second equalizing hole, 18 pressurization layer, 19 return air duct, 20 return air base plate, 21 slide groove, 22 C-type enclosure, 23 primary filter, 24 sealing ring, 25 return air outlet, 26 return air hole, 27 card strip, 28 attachment plate, 29 drainage strip, 30 filter screen. DETAILED DESCRIPTION

[0063] The present invention is described in further detail below with reference to the accompanying drawings.

[0064] As attached Figure 1-9 As shown, a steady-state displacement flow air conditioning system comprises a steady-state displacement flow air supply device, an air supply channel device arranged at one end of the steady-state displacement flow air supply device outlet, and a laminar flow return air channel device arranged at one end of the steady-state displacement flow air supply device inlet; the steady-state displacement flow air supply device comprises a fan 3, a first high-efficiency filter 5 and a second high-efficiency filter 6 connected to the air inlet of the fan 3, and a heat exchanger 4 connected to the air outlet of the fan 3; the second high-efficiency filter 6 is connected to the outside of the clean room; the air supply channel device is arranged along the top of the side wall 1 on one side of the longer length direction of the clean room; the air supply channel device is one of a positive pressure air supply channel device and a reflective air supply channel device; the positive pressure air supply channel device comprises a first static pressure air supply pipe 9, a pressure equalizing plate 10 arranged at the lower end of the first static pressure air supply pipe 9, and a first laminar flow air supply pipe 12 arranged on the lower side of the pressure equalizing plate 10; the pressure equalizing plate 10 is evenly distributed with first pressure equalizing holes 11; the The cross section of the first laminar air supply pipe 12 is a right-angled sector; the first laminar air supply holes 13 are evenly distributed on the arc surface of the first laminar air supply pipe 12; the arc surface of the first laminar air supply pipe 12 protrudes toward the center of the clean room; the axis of the first laminar air supply hole 13 is perpendicular to the arc surface of the first laminar air supply pipe 12; the reflective air supply channel device includes a second laminar air supply pipe 14 and a second static pressure air supply pipe 16 arranged in the second laminar air supply pipe 14; the cross section of the second laminar air supply pipe 14 is a right-angled sector; the second laminar air supply holes 15 are evenly distributed on the arc surface of the second laminar air supply pipe 14; the second static pressure air supply pipe 16 is evenly distributed with second equalizing pressure holes 17; the second equalizing pressure hole 17 is arranged on the side facing away from the second laminar air supply hole 15; the axis of the second laminar air supply hole 15 is perpendicular to the arc surface of the second laminar air supply pipe 14; the arc surface of the second laminar air supply pipe 14 protrudes toward the center of the clean room;

[0065] The laminar return air channel device is arranged on the side wall 1 on the other side of the longer length direction of the clean room; the laminar return air channel device includes a return air duct 19 connected to the first high-efficiency filter 5 and a return air port 25 arranged at the lower end of the return air duct 19; the return air port 25 is evenly distributed with return air holes 26 on the surface; the return air port 25 is arranged at the bottom of the clean room side wall 1 in the diagonal direction of the laminar air supply channel device. The steady-state replacement flow air supply device also includes a casing 8 arranged on the outside; the heat exchanger 4 is an evaporator; a boosting layer 18 is arranged on the upper side of the equalizing plate or on the outer side of the second static pressure air supply pipe 16, which is used to increase the gas pressure difference on both sides of the equalizing plate so that the gas flow rate at each point on the equalizing plate is balanced; the boosting layer 18 is a polyester fiber cloth; the laminar return air channel device also includes a primary filter 23 arranged above the return air port 25 in the return air pipe 19; the primary filter 23 is a bag filter; a sealing ring 24 is arranged on the peripheral wall of the bag filter to ensure that all the air flowing through the return air pipe 19 is filtered by the primary filter 23; the return air port 25 is slidably connected to the lower end of the return air pipe 19; the return air pipe 19 includes a return air base plate 20 for fixing on the side wall 1 of the clean room and a C-shaped enclosure 22 closed and connected to the return air base plate 20; the two sides of the return air base plate 20 A slide groove 21 is arranged on the side; the lower end of the return air base plate 20 protrudes from the lower edge of the arc-shaped enclosure; the return air outlet 25 is an arc-shaped cover matching the return air duct 19, and the inner wall of the arc-shaped cover is in contact with the outer wall of the arc-shaped enclosure; the inner walls of the arc-shaped cover are provided with clamping strips 27 that slide with the slide groove 21 on both sides; a filter screen 30 is arranged on the inner side of the return air outlet 25 to prevent insects and ants from entering the laminar return air channel device; the steady-state displacement flow air-conditioning system also includes an attachment plate 28 arranged on the outside of the air supply channel device; the attachment plate 28 is fixedly connected to the side wall 1 or the ceiling 2 of the clean room; a plurality of ridge-shaped drainage strips 29 are arranged on the attachment plate 28; the higher end of the drainage strip 29 corresponds to the first air supply hole or the second air supply hole; the other end of the drainage strip 29 is tangent to the side wall 1 or the ceiling 2 of the clean room; a gas flow regulating valve 7 is arranged on one side of the second high-efficiency filter 6.

[0066] The above-described embodiments are only preferred embodiments of the present invention, and are not exhaustive of the feasible implementations of the present invention. For those skilled in the art, any obvious changes made thereto without departing from the principles and spirit of the present invention should be considered to be included in the scope of protection of the claims of the present invention.

Claims

1. A steady-state displacement flow air conditioning system, Features: It includes a steady-state replacement flow air supply device, an air supply channel device arranged at one end of the air outlet of the steady-state replacement flow air supply device, and a laminar flow return air channel device arranged at one end of the air inlet of the steady-state replacement flow air supply device; The steady-state replacement flow air supply device comprises a fan (3), a first high-efficiency filter (5) and a second high-efficiency filter (6) connected to an air inlet of the fan (3), and a heat exchanger (4) connected to an air outlet of the fan (3); The air supply channel device is arranged along the top of the side wall (1) on one side of the clean room; The second high efficiency filter (6) is in communication with the outside of the clean room; The air supply channel device is one of a positive pressure air supply channel device and a reflective air supply channel device; The positive pressure air supply channel device comprises a first static pressure air supply pipe (9), a pressure equalizing plate (10) arranged at the lower end of the first static pressure air supply pipe (9), and a first laminar flow air supply pipe (12) arranged at the lower side of the pressure equalizing plate (10); The pressure equalizing plate (10) is evenly distributed with first pressure equalizing holes (11); The first laminar air supply holes (13) are evenly distributed on the arc surface of the first laminar air supply pipe (12); the axes of the first laminar air supply holes (13) are perpendicular to the arc surface of the first laminar air supply pipe (12); The reflective air supply channel device comprises a second laminar air supply pipe (14) and a second static pressure air supply pipe (16) arranged in the second laminar air supply pipe (14); Second laminar flow air supply holes (15) are evenly distributed on the arc-shaped surface of the second laminar flow air supply pipe (14); The second static pressure air supply pipe (16) is evenly distributed with second pressure equalizing holes (17); The second pressure equalizing hole (17) is arranged on a side facing away from the second laminar air supply hole (15); The axis of the second laminar air supply hole (15) is perpendicular to the arc-shaped surface of the second laminar air supply pipe (14); The laminar return air channel device is arranged on the side wall (1) on the other side of the clean room; The laminar return air channel device comprises a return air duct (19) connected to the first high-efficiency filter (5) and a return air port (25) arranged at the lower end of the return air duct (19); The surface of the return air port (25) is evenly distributed with return air holes (26); The return air port (25) is arranged at the bottom of the clean room side wall (1) in a diagonally opposite direction of the laminar air supply channel device.

2. A steady-state displacement flow air conditioning system according to claim 1, Features: The steady-state replacement flow air supply device further comprises a casing (8) arranged outside; The heat exchanger (4) comprises at least one of the following: an evaporator, a condenser and a heating wire.

3. A steady-state displacement flow air conditioning system according to claim 1, Features: A pressurization layer (18) is provided on the upper side of the pressure equalizing plate or on the outer side of the second static pressure air supply pipe (16); The pressurization layer (18) is made of at least one of the following: glass fiber cloth, polyester fiber cloth and nylon cloth.

4. A steady-state displacement flow air conditioning system according to claim 3, Features: The laminar return air channel device further comprises a primary filter (23) arranged above the return air port (25) in the return air duct (19); The primary filter (23) comprises at least one of the following: a bag filter, a pleated filter and a plate filter.

5. A steady-state displacement flow air conditioning system according to claim 3 or 4, Features: The return air port (25) is slidably connected to the lower end of the return air pipe (19); The return air port (25) is an arc-shaped cover that matches the return air pipe (19).

6. A steady-state displacement flow air conditioning system according to claim 1, Features: A filter screen (30) is provided inside the return air port (25).

7. A steady-state displacement flow air conditioning system according to claim 6, Features: It also includes an attachment plate (28) arranged on the outside of the air supply channel device; The attachment plate (28) is fixedly connected to the side wall (1) or the ceiling (2) of the clean room; A plurality of ridge-shaped drainage strips (29) are provided on the attachment plate (28).

8. A steady-state displacement flow air conditioning system according to claim 1, Features: A gas flow regulating valve 7) is provided on one side of the second high efficiency filter (6).

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