Ventilation air supply device and ventilation system

Abstract

The utility model discloses a ventilation air supply device and a ventilation system, the ventilation air supply device comprises at least one air supply unit, each air supply unit comprises a plurality of air supply ports, a flow equalizing plate is arranged behind the plurality of air supply ports, and a plurality of flow equalizing holes are formed in the flow equalizing plate. According to the ventilation and air supply device, inlet air can be evenly distributed through the flow equalizing plate, evenly-distributed air flow is endowed with rotating components through the guide fins of the air supply opening and then is rapidly and evenly mixed with indoor air, and the indoor temperature can be rapidly and evenly adjusted.

Description

Technical Field

[0001] The utility model belongs to the technical field of ventilation and air change, and specifically relates to a ventilation air supply device and a ventilation and air change system. Background Art

[0002] In a ventilation and air change system, an air conditioner sucks outdoor air into the air conditioner to make low-temperature air, and supplies it to a air supply unit through an air supply channel. The air supply unit supplies air slightly lower than the room temperature to a living area formed in the lower part of the air-conditioned space at a slow speed. The air is heated by a heating body (such as a person) existing in the living area and generates an upward air flow, thereby transporting pollutants such as dust or gas generated in the air-conditioned space to the upper part of the air-conditioned space. In the ventilation and air change system, the pollutants and the heated air are exhausted together through an exhaust port provided on the ceiling or the like to perform ventilation in the air-conditioned space. In such a ventilation and air change system, in order to suppress the temperature difference between the feet and the head to, for example, 3°C or less (international standard, comfort reference value of the American Society of Heating, Refrigerating and Air-Conditioning Engineers), a large-airflow operation with a reduced supply and exhaust temperature difference is performed. Therefore, it is necessary to arrange a plurality of large air supply units in the air-conditioned space, and there is a problem that it is difficult to ensure the installation place of the air supply unit.

[0003] In order to ensure the installation place obtained by compacting the air supply unit, reduce the temperature gradient in the living area, and improve the pollutant dilution effect in the living area, Chinese Patent ZL

[0004] 200510059558.8 gives a rotating component to the blown air through a plurality of guide vanes, increases the induction amount near the air supply unit, thereby improving the diffusibility of the air supply, and thus the air supply unit can be made more compact.

[0005] However, since the air entering the air supply unit is not evenly distributed at a certain air flow rate, the air blown out from the air outlet of the air supply unit cannot be evenly mixed with the air in the living area, resulting in uneven temperature in the living area and inability to evenly transport pollutants such as dust or gas generated in the air-conditioned space to the upper part of the air-conditioned space. Summary of the Utility Model

[0006] The present application provides a ventilation air supply device for a ventilation and air change system, which can be installed on a wall. The ventilation and air change system transports temperature-adjusted air to the ventilation air supply device through an air conditioner. The ventilation air supply device enables the incoming air to be evenly distributed through a flow equalizing plate. The evenly distributed air flow is given a rotating component through the guide vanes of the air supply port and then quickly and evenly mixed with the indoor air, so that the temperature in the room can be quickly and evenly adjusted. The air flow can flow more quickly and evenly toward the air supply port through a wind shield, improving the air supply efficiency and uniformity.

[0007] The technical solution adopted is as follows:

[0008] A ventilation and air supply device includes at least one air supply unit. Each air supply unit includes a plurality of air supply ports. A flow equalizing plate is provided behind the plurality of air supply ports, and a plurality of flow equalizing holes are provided on the flow equalizing plate.

[0009] Optionally, the flow equalizing plate is vertically arranged.

[0010] Optionally, the flow equalizing holes on the flow equalizing plate are arranged in different opening ratios in different regions.

[0011] Optionally, the opening ratio in the upper region of the flow equalizing plate is 20%-25%, and the opening ratio in the lower region of the flow equalizing plate is below 10%.

[0012] Optionally, the length of the upper region exceeds half of the length of the flow equalizing plate.

[0013] Optionally, the flow equalizing plate is connected to the ventilation and air supply device by fasteners.

[0014] Optionally, a wind deflector is provided on the upper part of the side wall on the side opposite to the air supply port in the ventilation and air supply device, and the wind deflector extends horizontally from the side wall on the side opposite to the air supply port.

[0015] Optionally, the ventilation and air supply device is a box body with a cavity formed by an air outlet panel, a rear panel, side panels and an upper panel. The air outlet panel is rotatably installed at the front end of the ventilation and air supply device.

[0016] This application also provides a ventilation and air exchange system, including an air conditioner and the above-mentioned ventilation and air exchange device. The ventilation and air exchange device is used to be installed at the lower part of the air-conditioned space, so that the air supply ports of the air supply units are exposed at the lower part of the air-conditioned space. An exhaust port is provided at the upper part of the air-conditioned space. The air conditioner is used to supply conditioned air to the air inlet of the ventilation and air exchange device. The air supply ports are used to input conditioned air into the air-conditioned space. The exhaust port is used to discharge the mixed air formed by the conditioned air and the air in the air-conditioned space rising after mixing.

[0017] Among them, a plurality of guiding vanes for imparting a rotating component to the conditioned air blown into the air-conditioned space are installed on the air supply ports of the air supply units. The plurality of guiding vanes are arranged radially around the central axis of the air supply port. Moreover, the plurality of guiding vanes are inclined at the same angle with respect to the plane orthogonal to the central axis of the air supply port, and a cylinder coaxial with the central axis of the air supply port is formed around the plurality of guiding vanes.

[0018] Optionally, the conditioned air is low-temperature air lower than the temperature of the air in the air-conditioned space or high-temperature air higher than the temperature of the air in the air-conditioned space.

[0019] The ventilation and air supply device and ventilation and air exchange system of the present utility model have the following beneficial effects:

[0020] (1) The ventilation and air supply device enables the incoming air to be evenly distributed through the flow equalizing plate. The evenly distributed air flow is given a rotational component by the guiding vanes of the air supply port and then quickly and evenly mixed with the indoor air, enabling rapid and uniform adjustment of the indoor temperature.

[0021] (2) By using the flow equalizing plate to evenly distribute the air flow, the thickness of the ventilation and air supply device can be reduced as a whole.

[0022] (3) Different opening ratios are set in the upper region and the lower region, which can make the air flow more evenly distributed.

[0023] (4) The air flow can flow more quickly and evenly towards the air supply port through the wind deflector, improving the air supply efficiency and uniformity.

[0024] (5) The flow equalizing plate is detachable. When cleaning is required, the flow equalizing plate can be removed for cleaning.

[0025] (6) By using the flow equalizing plate to evenly distribute the incoming air flow, the rotational air flows blown out from each air supply port are also evenly distributed, so that the air volume in the air-conditioned space induced by the conditioned air also increases evenly. This makes the temperature difference between the conditioned air and the surrounding air decrease rapidly and evenly, and it will not cause the need to increase the air supply volume of the air conditioner due to insufficient uniformity of the upper and lower temperature differences, and the air in the air-conditioned space can be evenly adjusted efficiently with as small an air volume as possible, having a certain energy-saving effect.

[0026] (7) The flow equalizing plate evenly diverts the incoming air to each air supply port, and the guiding vanes give the conditioned air at the air supply port a rotational component, which can evenly increase the induction amount of the air in the air-conditioned space induced by the conditioned air volume. Moreover, as the induction amount increases, according to the law of conservation of momentum, the speed of the conditioned air rapidly and evenly decelerates after being supplied into the air-conditioned space, so there is almost no discomfort caused by the air flow when supplying the conditioned air to the living area.

[0027] (8) The flow equalizing plate evenly diverts the incoming air to each air supply port, and the guiding vanes give the conditioned air at the air supply port a rotational component, which can evenly increase the induction amount of the air in the air-conditioned space induced by the conditioned air volume. The air in the living area and the conditioned air are quickly and evenly mixed and then rise to near the ceiling, which can evenly and effectively dilute the pollutants generated in the living area, etc., and avoid uneven distribution of fresh air indoors. Description of the Drawings

[0028] The above features and technical advantages of the present utility model will become clearer and easier to understand by describing its embodiments in conjunction with the following drawings.

[0029] Figure 1 It is a schematic diagram of the ventilation and air exchange system according to an embodiment of the present application.

[0030] Figure 2 It is a schematic diagram of the air supply unit according to an embodiment of the present application.

[0031] Figure 3 It is a schematic diagram of the air supply port according to an embodiment of the present application.

[0032] Figure 4 It is a front view of the ventilation and air supply device according to an embodiment of the present application.

[0033] Figure 5 It is a side view of the ventilation and air supply device according to an embodiment of the present application.

[0034] Figure 6 It is a schematic diagram of the layout of the flow equalizing holes according to an embodiment of the present application. Detailed Embodiments

[0035] The embodiments of the present utility model will be described below with reference to the drawings. Those of ordinary skill in the art can recognize that the described embodiments can be modified in various different ways or combinations thereof without departing from the spirit and scope of the present utility model. Therefore, the drawings and the description are illustrative in nature and are not used to limit the protection scope of the claims. In addition, in this specification, the drawings are not drawn to scale, and the same reference numerals represent the same parts.

[0036] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application.

[0037] This embodiment provides a ventilation and air supply device, which is used in a ventilation and air change system and can be installed on a wall. The ventilation and air change system transports conditioned air to the ventilation and air supply device through an air conditioner. The ventilation and air supply device makes the incoming air evenly distributed through a flow equalizing plate. The evenly distributed air flow is given a rotational component through the guiding vanes of the air supply port and then quickly and evenly mixed with the indoor air, so that the indoor temperature can be quickly and evenly adjusted. The air flow can be made to flow more quickly and evenly towards the air supply port through a wind deflector, improving the air supply efficiency and uniformity.

[0038] First, taking refrigeration as an example, the ventilation and air supply device will be described below. Figure 1 It is a schematic diagram of the ventilation and air change system involved in the embodiment of the present application. Please refer to Figure 1 , an air conditioner space 10 is equipped with a ventilation and air change system. The air conditioner space 10 can be an office, a computer room, a reception room, a banquet hall, a game room, a printing room, a ward, a toilet, a kitchen, a machinery room, a boiler room, a factory, etc. In the example shown in Figure 1 , in the living area 11 formed below the interior of the air conditioner space 10, as a heat source, for example, a ventilation and air supply device 200 is installed at the lower part of the side surface ( Figure 1 is the right side surface of the air conditioner space 10 in Figure 4 ) 17 of the air conditioner space 10 where there is a person 12. The ventilation and air supply device 200 is a box body with a cavity. The ventilation and air supply device 200 includes at least one air supply unit 20 of patent ZL200510059558.8. The ventilation and air supply device can have only one air supply unit 20, or two or more air supply units 20 arranged vertically can be integrated into one ventilation and air supply device 200 (as shown in Figure 5 ), or two or more air supply units 20 arranged horizontally can be integrated into one ventilation and air supply device 200. As shown in Figure 5 , two air supply units are vertically integrated into the ventilation and air supply device 200, and a plurality of circular air supply ports 15 are provided on each air supply unit. As shown in Figure 5 , in , the air outlet panel 1, the rear panel 2, the side panels 3, and the upper panel 4 are combined to enclose a box body with a cavity and are connected to the upper end of the base 5. Rotating shafts are installed at both the upper and lower ends of the air outlet panel 1 and are installed at the front end of the ventilation and air supply device 200 through the rotating shafts. When the air outlet panel is opened, the air supply ports 15 can be exposed, and air can be supplied to the indoor through the air supply ports 15. When air supply is not required, the air outlet panel can be closed.

[0039] In a ventilation system, a ventilation device 200 is provided on the back side of the lower part of the side surface 17 of an air-conditioned space 10. An air supply unit 20 is provided with an air supply port 15, and an exhaust port 16 is provided at the upper part of the side surface 17 in the air-conditioned space 10. The front surface 21 of the air supply unit 20 is exposed at the lower part of the side surface 17 of the air-conditioned space 10. On the front surface 21 of the air supply unit 20 exposed at the lower part of the side surface 17 of the air-conditioned space 10, as Figure 2 shown, a plurality of circular air supply ports 15 are arranged in a vertical and horizontal pattern. The low-temperature air SA produced by sucking external air OA into an air conditioner 22 is supplied to the air supply unit 20 via an air supply passage 23. Therefore, the low-temperature air SA is supplied from the plurality of air supply ports 15 formed on the front surface 21 of the air supply unit to the living area 11 below the interior of the air-conditioned space 10. The air conditioner 22 includes a cooler 25 for cooling the external air OA to produce the low-temperature air SA and a filter (not shown), and also includes an air supply fan 27 and the like for supplying the produced low-temperature air SA to the air-conditioned space 10 via the air supply passage 23 and the air supply unit 20.

[0040] An exhaust passage 41 equipped with an exhaust fan 40 is connected to the exhaust port 16 at the upper part of the air-conditioned space 10. Therefore, the air staying in the upper part of the air-conditioned space 10 (the air heated by the heat load of people or office machines etc. existing in the air-conditioned space 10) is discharged to the outside via the exhaust passage 41. The connection of the air supply unit to the passage can be made from above the air supply unit. It can also be a structure in which a part of the exhaust air is returned to the air conditioner 22 for reuse by providing a return passage 45 shown by the dotted line in Figure 1 . Moreover, the exhaust fan 40 can be omitted, and the heated air staying in the upper part of the air-conditioned space 10 can be pushed out sequentially by the low-temperature air SA supplied to the lower part inside the air-conditioned space 10. Also, the exhaust port 16 can be formed on the ceiling of the air-conditioned space 10. In addition, the ventilation system of the present utility model is not limited to a living room, and can also be applied to various air-conditioned spaces where people or various instruments etc. exist.

[0041] In order to impart a rotational component to the discharged air flow, as Figure 2 , Figure 3As shown, a plurality of guide vanes 30 for imparting a rotational component to the low-temperature air SA blown into the air-conditioning space 10 are respectively fixed on each air supply port 15. A support member 31 is arranged on the central axis of each air supply port 15. The guide vanes 30 can be radially fixed on the support member 31. The plurality of guide vanes are inclined at the same angle with respect to a plane orthogonal to the central axis of the air supply port. A cylinder 32 can be installed around the guide vanes. By forming an inner wall surface in a cylindrical shape around the guide vanes, more rotational components can be imparted to the outgoing air flow than in the case without the inner wall surface in a cylindrical shape. The specific structures and arrangement forms of the guide vanes and the cylinder are the same as those in Patent ZL 200510059558.8 and will not be elaborated here.

[0042] In some embodiments, in order to make the air flow flowing into the air inlet more evenly distributed, a flow equalizing cloth bag can be provided in the ventilation and air change device 200. The flow equalizing cloth bag is in the shape of a pocket and has fine pores. Its open end is installed at the air inlet, and the bag body extends all the way to the bottom of the ventilation and air change device. The incoming air flows out through the fine pores of the flow equalizing pocket after passing through the flow equalizing pocket and enters the air supply port 15. Since the flow equalizing cloth bag has a certain effect of delaying the air flow, the incoming air with uneven flow velocity can be changed into a gentle and uniform air flow after flowing out through the fine pores, so that the air flow entering each air supply port can be made uniform. The air flow further flows through the air supply port 15, and a rotational component is imparted by the guide vanes. A rotational component is imparted to the low-temperature air SA blown out from each air supply port 15, and the rotational air flows blown out from each air supply port 15 are evenly distributed, so that the amount of air in the air-conditioning space 10 induced by the low-temperature air SA also increases evenly. Along with this, according to the principle of conservation of momentum, the velocity of the low-temperature air SA also decreases evenly after being blown out from each air supply port 15. The temperature difference between the low-temperature air SA and the surrounding air rapidly and evenly decreases, and the temperature difference between the upper and lower parts in the living area 11 in the air-conditioning space 10 can be evenly changed. In this way, it will not cause the situation that the air intake of the air conditioner needs to be increased due to the insufficiently uniform temperature difference between the upper and lower parts, and the air-conditioning space 10 can be efficiently and evenly air-conditioned with as small an air volume as possible, having a certain energy-saving effect.

[0043] In some embodiments, a flow equalizing plate 150 is provided at a certain distance behind the air supply port 15. The flow equalizing plate 150 is in the shape of a flat plate and can be vertically arranged, with a plurality of flow equalizing holes 151 for passing air flow distributed thereon. The flow equalizing holes 151 can be formed in a multi-row and multi-column form uniformly in the vertical and horizontal directions along the plate surface of the flow equalizing plate 150. For example, there are 100 rows and 20 columns of flow equalizing holes. The air flow entering from the air inlet passes through each of the flow equalizing holes 151, and the flow equalizing holes all over the flow equalizing plate evenly distribute the air flow, so that the air flow passes through the flow equalizing plate more evenly and stably. When the air flow passing through the flow equalizing holes 151 is uniform and stable, the air flow further passes through the air supply port 15, and after passing through the rotational component imparted by the guiding vanes, the cold air SA blown out from each air supply port 15 is imparted with a rotational component, and the rotational air flows blown out from each air supply port 15 are evenly distributed, so that the air volume in the air-conditioning space 10 induced by the cold air SA also increases evenly. Along with this, according to the principle of conservation of momentum, the speed of the cold air SA also decreases evenly after being blown out from each air supply port 15. The temperature difference between the cold air SA and the surrounding air rapidly and evenly decreases, which can make the temperature difference between the upper and lower parts in the living area 11 in the air-conditioning space 10 change evenly. In this way, it will not cause the need to increase the air supply volume by opening the air inlet of the air conditioner due to the uneven temperature difference between the upper and lower parts, and it can efficiently and evenly condition the air in the air-conditioning space 10 with as small an air volume as possible, having a certain energy-saving effect.

[0044] By using a flow equalizing plate, compared with using a flow equalizing cloth bag, the thickness of the air supply unit can be reduced. Since a flow equalizing cloth bag is used, a relatively large space capable of accommodating the flow equalizing cloth bag is required inside the air supply unit, and the thickness dimension needs to reach 450 mm. However, by using a flow equalizing plate, the thickness of the air supply unit can be significantly reduced, and the thickness dimension can reach 200 mm to 250 mm.

[0045] Furthermore, the flow equalizing holes 151 on the flow equalizing plate 150 can be arranged in different opening ratios in different regions. For example, the flow equalizing plate 150 is divided into an upper region A and a lower region B. Among them, the upper region A can be a little longer than half of the length of the entire flow equalizing plate. For example, if the ventilation and air change device includes a single air supply unit, the upper region A can be a little longer than half of the length of the flow equalizing plate of this air supply unit. For example, if the ventilation and air change device includes two vertically arranged air supply units, the entire upper air supply unit is the upper region A, and the upper part of the lower air supply unit is also the upper region A. The two upper regions A adopt the same opening ratio, while the lower region B adopts another opening ratio. For example, the opening ratio of the upper region A is 20%-25%, and the opening ratio of the lower region B is less than 10%. This is because it is considered that the air flow first passes through the upper region. By arranging more flow equalizing holes in the upper region, the air flow passing through first can be evenly divided by more flow equalizing holes. Since the air flow passes through the lower region later, relatively fewer flow equalizing holes are arranged. Even if the air flow passes through later, it can still make the air passing through the lower region pass through the flow equalizing plate 150 evenly at the same time as the air evenly divided in the upper region.

[0046] Among them, the flow equalizing plate can be connected to the ventilation and air supply device 200 by bolts. Multiple bolt holes can be arranged along the perimeter of the flow equalizing plate, and the flow equalizing plate is installed on the ventilation and air supply device 200 by screwing bolts into the bolt holes. When it is necessary to clean the flow equalizing plate, the flow equalizing plate can be disassembled and cleaned.

[0047] In some embodiments, a wind deflector 201 can also be arranged in the ventilation and air supply device 200, which is arranged at the upper part of the side wall on the side opposite to the air supply port 15. The wind deflector 201 extends horizontally from this side wall for a certain distance and has a certain distance from the side wall where the air supply port is located. On the side opposite to the air supply port 15, since the incoming air is blocked by the wind deflector 201, it bypasses the wind deflector and flows downward, which can make the incoming air flow towards the air supply port more quickly. Without the wind deflector 201, on the side opposite to the air supply port 15, a large amount of incoming air will flow downward, and such an incoming air flow path is not efficient enough. By arranging the wind deflector, this problem can be solved.

[0048] In addition, the ventilation and air supply device 200 can be configured to supply low-temperature air to the air-conditioned space, but it can also be used for a heating air conditioner that supplies high-temperature air to the air-conditioned space for heating. Its flow equalizing plate and wind deflector have the same functions as those in refrigeration.

[0049] Among them, in the ventilation and air supply device 200, when high-temperature air is supplied into the air-conditioning space from the air supply port 15, the induction effect that the air in the air-conditioning space is induced by the supplied high-temperature air and moves together comes into play. The uniform flow plate evenly diverts the incoming air to each air supply port 15. At the air supply port, the guiding vanes impart a rotating component to the high-temperature air at the air supply port, and can uniformly increase the induction amount (induction ratio) of the air in the air-conditioning space induced by the high-temperature air volume. Moreover, as the induction amount increases, according to the law of conservation of motion, the speed of the high-temperature air rapidly and uniformly decelerates after being supplied into the air-conditioning space. Therefore, almost no airflow discomfort occurs due to the supply of high-temperature air to the living area.

[0050] Moreover, as the induction amount increases, the low-temperature air in the living area formed below in the air-conditioning space can be mixed with the supplied high-temperature air and rapidly and uniformly heated. Therefore, the low-temperature air in the living area and the high-temperature air supplied from the air supply port into the air-conditioning space are uniformly mixed and then rapidly and uniformly rise in the air-conditioning space, reaching near the ceiling. In this way, the pollutants generated in the living area can be uniformly and effectively diluted and moved to near the ceiling.

[0051] Moreover, the air rising near the ceiling is cooled by contacting the low-temperature wall surface of the air-conditioning space and then descends again to the living area. After that, it is mixed with the high-temperature air supplied from the air supply port and rises again to near the ceiling. In this way, through the circulation of the air in the living area and the air near the ceiling in the air-conditioning space, the air in the living area is successively replaced by the fresh air descending from near the ceiling, and the living area can be heated without generating airflow discomfort.

[0052] Moreover, by circulating the air in the living area and the air near the ceiling in the air-conditioning space while discharging the air in the air-conditioning space from the exhaust port, the indoor air is uniformly replaced by the fresh high-temperature air supplied from the air supply port in sequence. In this way, the pollutants generated in the living area and the like can be uniformly removed, and uneven distribution of fresh air indoors can be avoided.

[0053] This embodiment provides a ventilation and air exchange system, including the above-mentioned ventilation and air supply device 200 and the air conditioner 22. The air conditioner transports the temperature-adjusted air to the ventilation and air supply device. The ventilation and air supply device enables the incoming air to be evenly distributed through the uniform flow plate. The evenly distributed air flow is imparted with a rotating component by the guiding vanes at the air supply port and then quickly and uniformly mixed with the indoor air, so that the indoor temperature can be quickly and uniformly adjusted. The air flow can be made to flow more quickly and evenly towards the air supply port through the wind deflector, improving the air supply efficiency and uniformity.

[0054] Next, the ventilation and air exchange system will be described taking refrigeration as an example first. Figure 1FIG. 0 is a schematic diagram of a ventilation system according to an embodiment of the present application. The ventilation system is installed on an air-conditioned space 10, and the air-conditioned space 10 can be an office, a computer room, a reception room, a banquet hall, a game room, a printing room, a ward, a toilet, a kitchen, a machinery room, a boiler room, a factory, etc. In the example shown in this Figure 1 In the living area 11 formed below the interior of the air-conditioned space 10, as a heating body, for example, a ventilation and air-conditioning device 200 is installed at the lower part of the side surface 17 ( Figure 1 in FIG. 0 is the right side surface of the air-conditioned space 10) of the air-conditioned space 10 where there is a person 12. An exhaust port 16 is provided in the upper part of the air-conditioned space 10, and can be provided on the side surface 17, for example. The front surface 21 of the air supply unit 20 is exposed at the lower part of the side surface 17 of the air-conditioned space 10. On the front surface 21 of the air supply unit 20 exposed at the lower part of the side surface 17 of the air-conditioned space 10, as Figure 2 shown, a plurality of circular air supply ports 15 are arranged in a vertical and horizontal pattern, and the low-temperature air SA formed by sucking the outside air OA into the air conditioner 22 is supplied to the air supply unit 20 via the air supply passage 23. Therefore, the low-temperature air SA is supplied from the plurality of air supply ports 15 formed on the front surface 21 of the air supply unit to the living area 11 below the interior of the air-conditioned space 10. The air conditioner 22 includes a cooler 25 for cooling the outside air OA to form the low-temperature air SA and a filter (not shown), and also includes an air supply fan 27 for supplying the formed low-temperature air SA to the air-conditioned space 10 via the air supply passage 23 and the air supply unit 20, etc.

[0055] An exhaust passage 41 equipped with an exhaust fan 40 is connected to the exhaust port 16 in the upper part of the air-conditioned space 10. Therefore, the air remaining in the upper part of the air-conditioned space 10 (the air heated by the heat load of the people or office machines in the air-conditioned space 10) is discharged to the outside via the exhaust passage 41. The connection of the air supply unit to the passage can be made from above the air supply unit. It can also be a structure in which a part of the exhaust air is returned to the air conditioner 22 through a return passage 45 shown by a dashed line in FIG. 1 for reuse. Moreover, the exhaust fan 40 can be omitted, and the heated air remaining in the upper part of the air-conditioned space 10 can be pushed out successively by the low-temperature air SA supplied to the lower part of the air-conditioned space 10. Moreover, the exhaust port 16 can be formed on the ceiling of the air-conditioned space 10. In addition, the ventilation system of the present utility model is not limited to living rooms, and can also be applied to various air-conditioned spaces where there are people or various instruments, etc.

[0056] In addition, the ventilation system can supply low-temperature air to the air-conditioned space for refrigeration, or can be used as a heating air conditioner for supplying high-temperature air to the air-conditioned space for heating. Its flow equalizing plate and wind deflector have the same functions as those in refrigeration, and will not be elaborated here.

[0057] Among them, in the ventilation and air exchange system, when high-temperature air is supplied from the air supply port 15 into the air-conditioning space, the induction effect that the air in the air-conditioning space is induced by the supplied high-temperature air and moves together comes into play. The air inlet is evenly diverted to each air supply port 15 through the air distribution plate. At the air supply port, the guide vanes impart a rotating component to the high-temperature air at the air supply port, and can evenly increase the induction amount (induction ratio) of the air in the air-conditioning space induced by the high-temperature air volume. Moreover, as the induction amount increases, according to the law of conservation of momentum, the velocity of the high-temperature air rapidly and evenly decelerates after being supplied into the air-conditioning space. Therefore, almost no airflow discomfort occurs due to the supply of high-temperature air to the living area.

[0058] Moreover, as the induction amount increases, the low-temperature air in the living area formed below in the air-conditioning space can be mixed with the supplied high-temperature air and rapidly and evenly heated up. Therefore, the low-temperature air in the living area and the high-temperature air supplied from the air supply port into the air-conditioning space are evenly mixed and then rapidly and evenly rise in the air-conditioning space and reach near the ceiling. In this way, the pollutants generated in the living area can be evenly and effectively diluted and moved to near the ceiling.

[0059] Moreover, the air rising to near the ceiling is cooled by contacting the low-temperature wall surface of the air-conditioning space and then descends to the living area again. After that, it is mixed with the high-temperature air supplied from the air supply port and heated up again and rises to near the ceiling. In this way, through the circulation of the air in the living area and the air near the ceiling in the air-conditioning space, the air in the living area is successively replaced by the fresh air descending from near the ceiling, and the living area can be heated without generating airflow discomfort.

[0060] Moreover, by circulating the air in the living area and the air near the ceiling in the air-conditioning space while exhausting the air in the air-conditioning space from the exhaust port, the indoor air is evenly replaced by the fresh high-temperature air supplied from the air supply port in turn. In this way, the pollutants generated in the living area and other places can be evenly removed, and the uneven distribution of fresh air indoors can be avoided.

[0061] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A ventilation and air supply device, characterized in that, It includes at least one air supply unit, each air supply unit includes a plurality of air supply ports, a flow equalizing plate is arranged behind the plurality of air supply ports, and a plurality of flow equalizing holes are arranged on the flow equalizing plate.

2. The ventilation and air supply device according to claim 1, characterized in that The flow equalizing plate is vertically arranged.

3. The ventilation and air supply device according to claim 1, characterized in that, The flow equalizing holes on the flow equalizing plate are arranged in different opening ratios in different regions.

4. The ventilation and air supply device according to claim 3, characterized in that, The opening ratio in the upper region of the flow equalizing plate is 20%-25%, and the opening ratio in the lower region of the flow equalizing plate is below 10%.

5. The ventilation and air supply device according to claim 4, characterized in that, The length of the upper region exceeds half of the length of the flow equalizing plate.

6. The ventilation and air supply device according to claim 1, characterized in that, The flow equalizing plate is connected to the ventilation and air supply device through fasteners.

7. The ventilation and air supply device according to claim 1, characterized in that, A wind baffle is arranged on the upper part of the side wall on the side opposite to the air supply port in the ventilation and air supply device, and the wind baffle extends horizontally from the side wall on the side opposite to the air supply port.

8. The ventilation and air supply device according to claim 1, characterized in that, The ventilation and air supply device is a box body with a cavity formed by enclosing an air outlet panel, a rear panel, side panels and an upper panel, and the air outlet panel is rotatably installed at the front end of the ventilation and air supply device.

9. A ventilation system, characterized in that, It includes an air conditioner and the ventilation and air supply device according to any one of claims 1 to 8. The ventilation and air supply device is used to be installed at the lower part of the air conditioning space so that the air supply ports of the air supply units are exposed at the lower part of the air conditioning space. An exhaust port is arranged at the upper part of the air conditioning space. The air conditioner is used to convey conditioned air to the air inlet of the ventilation and air supply device. The air supply ports are used to input conditioned air into the air conditioning space, and the exhaust port is used to discharge the mixed air formed by the conditioned air and the air in the air conditioning space rising after mixing. Wherein, a plurality of guide vanes for imparting a rotational component to the conditioned air blown into the air conditioning space are installed on the air supply ports of the air supply units. The plurality of guide vanes are arranged radially around the central axis of the air supply port, and the plurality of guide vanes are inclined at the same angle with respect to the planes perpendicular to the central axis of the air supply port. A cylinder coaxial with the central axis of the air supply port is formed around the plurality of guide vanes.

10. The ventilation and air change system according to claim 9, wherein The conditioned air is low-temperature air with a temperature lower than the air temperature in the air conditioning space, or high-temperature air with a temperature higher than the air temperature in the air conditioning space.

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