An indoor and outdoor ventilation control system and control method

Abstract

The present invention discloses an indoor and outdoor ventilation control system and a control method. The indoor and outdoor ventilation control system includes a floor slab, an overhead floor provided below the floor slab, and a makeup air device provided below the ground. At least a part of the overhead floor is located below the ground. An air supply channel and a return air channel communicating with the atmosphere above the ground are opened in the part of the overhead floor located below the ground. The makeup air device is communicated with the air supply channel and the return air channel. The present invention solves the problems existing in the prior art, such as poor ventilation and moisture-proof effects and inconvenient building structure layout.

Description

Technical Field

[0001] The present invention relates to the technical field of building ventilation, and specifically to an indoor and outdoor ventilation control system and a control method. Background Art

[0002] The typical characteristics of humid and hot climate regions are high temperature and high humidity in summer, cold and humid in winter, and particularly humid in the transitional season. The Sichuan-Chongqing region in China belongs to a typical humid and hot climate region.

[0003] When the precipitation and air humidity increase, "moisture return" phenomena often occur in waterfront building complexes in such regions, accelerating the reproduction of microorganisms, mildewing on the wall surfaces, and damaging the indoor environment. The "Evaluation Standard for Indoor Thermal and Humid Environment of Civil Buildings" clearly requires that there should be no condensation and mildew in the indoor environment, and this situation should be avoided and eliminated.

[0004] In addition, waterfront building complexes are dense, and various factors such as human living heat emissions, air pollution, and artificial structures interact with each other, causing the local temperature in the residential area to be too high and deteriorating the outdoor thermal environment. The "Design Standard for Thermal Environment of Urban Residential Areas" JGJ286-2013 promoted by the state at the present stage also puts forward higher requirements for the outdoor thermal environment.

[0005] At present, the existing building overhead moisture-proof practices all have disadvantages:

[0006] 1. The first floor above the ground is raised to form an overhead floor above the ground, and natural ventilation openings are added to the building facade. It is impossible to ensure the ventilation effect of the overhead floor, the moisture-proof effect is discounted, and the advantages of warm in winter and cool in summer underground cannot be effectively utilized. At the same time, the building elevation is raised and openings are made on the side, which has a great impact on the general layout planning and the building facade.

[0007] 2. No ventilation measures are taken for the overhead floor, and no ventilation holes are opened on the facade, forming a closed overhead floor. Since the air cannot circulate, it is impossible to fully achieve moisture-proof and anti-condensation.

[0008] 3. It is impossible to combine the indoor thermal environment with the outdoor thermal environment and propose a comprehensive solution. Summary of the Invention

[0009] To overcome the deficiencies of the prior art, the present invention provides an indoor and outdoor ventilation control system and a control method, which solve the problems existing in the prior art such as poor ventilation and moisture-proof effects and inconvenient building structure layout.

[0010] The technical solutions adopted by the present invention to solve the above problems are as follows:

[0011] An indoor and outdoor ventilation control system includes a floor slab, an overhead floor provided below the floor slab, and a make-up air device provided below the ground. At least a part of the overhead floor is located below the ground. An air supply channel and a return air channel communicating with the atmosphere above the ground are provided in the part of the overhead floor located below the ground. The make-up air device is communicated with the air supply channel and the return air channel.

[0012] The overhead floor can achieve heat preservation and insulation, and can also make full use of the advantages of warm in winter and cool in summer underground; the air supply channel and the return air channel realize air circulation and heat exchange. The make-up air device takes in fresh air and further promotes the air circulation and heat exchange in the air supply channel and the return air channel. At least a part of the overhead floor is located below the ground, which avoids the influence on the building structure layout on the ground such as the elevation of the building elevation and the side openings, and also ensures airtight waterproofing. The present invention solves the problems existing in the prior art such as poor ventilation and moisture-proof effects and inconvenient building structure layout.

[0013] As a preferred technical solution, the make-up air device includes a fan room and an air outlet device provided outside the fan room and communicating with the atmosphere above the ground. The fan room is communicated with the overhead floor through the air supply channel, the fan room is also communicated with the overhead floor through the return air channel, the return air channel is also communicated with the air outlet device, and a return air valve is provided on the return air channel.

[0014] The fan room is used to supply air to the overhead floor through the air supply channel, and the air can also return to the overhead floor through the return air channel. The air outlet device is used to discharge air to the outside, so as to achieve a better ventilation and heat exchange effect; the return air valve controls the on-off of the return air channel, which is convenient for controlling the flow of the return air.

[0015] As a preferred technical solution, the fan room includes a fresh air inlet, a ventilation valve, an air supply chamber, a mixing chamber, and a return air chamber communicating with the outside of the fan room. The air supply chamber, the mixing chamber, and the return air chamber are communicated in sequence and separated by the ventilation valve. A supply fan communicating with the air supply channel is provided in the air supply chamber, a return fan communicating with the return air channel is provided in the return air chamber, and the return air chamber is communicated with the air outlet device through the return air channel.

[0016] The supply fan is used to supply air to the overhead floor through the air supply channel, and the return fan is used to enable the air to return to the overhead floor through the return air channel. The air supply chamber, the mixing chamber, and the return air chamber are communicated in sequence, providing a working space for the air flow and heat exchange; the air supply chamber, the mixing chamber, and the return air chamber are separated by the ventilation valve, which is convenient for controlling the air flow and the rhythm of heat exchange according to the actual situation.

[0017] As a preferred technical solution, the air outlet device includes an air outlet and an air outlet valve connected to each other, and the air outlet valve is connected to the return air channel.

[0018] The air outlet valve is used to control the opening and closing of the air outlet, so as to open or close the air outlet according to different working conditions.

[0019] As a preferred technical solution, the return air valve, the ventilation valve, and the air outlet valve are all electric valves.

[0020] The electric valve is convenient for electrification control and occupies less space.

[0021] As a preferred technical solution, a dehumidifier is provided in the air mixing chamber.

[0022] The dehumidifier is beneficial to removing impurities such as moisture in the air, so as to achieve a better ventilation and heat exchange effect.

[0023] As a preferred technical solution, a centralized management control box is further provided in the fan room, and the centralized management control box is electrically connected to the supply fan, the return fan, the return air valve, the ventilation valve, and the air outlet valve respectively.

[0024] The centralized management control box is convenient for realizing automatic and remote control of electrical components, that is, it improves the degree of automation, is convenient for operation, and saves occupied space. Preferably, a control system such as a PLC is installed in the centralized management control box.

[0025] An indoor and outdoor ventilation control method. In summer working conditions, when using the indoor and outdoor ventilation control system described above, the following steps are adopted:

[0026] S1. Turn on the supply fan, take air from the fresh air inlet, and then send the air through the air supply channel to the overhead floor for circulation and ventilation;

[0027] S2. Close the return air valve and turn on the air outlet device so that the cooled cold air does not pass through the return air channel.

[0028] This achieves a good ventilation and heat exchange effect, realizes the function of keeping the indoor cool in summer, and saves energy.

[0029] An indoor and outdoor ventilation control method. In winter working conditions and / or transition season working conditions, when using the indoor and outdoor ventilation control system described above, the following steps are adopted:

[0030] K1. Turn on the supply fan, take air from the fresh air inlet, and then send the air through the air supply channel to the overhead floor for circulation and ventilation;

[0031] K2. Close the air outlet device and turn on the return air valve and the return fan.

[0032] This achieves a good ventilation and heat exchange effect, realizes the function of keeping the indoor warm and moisture-proof in winter and / or transition season, and saves energy.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] (1) The overhead floor of the present invention can achieve heat insulation, and can also make full use of the advantages of warm in winter and cool in summer underground; the air supply channel and the air return channel realize air circulation and heat exchange. The air make-up device takes in fresh air and further promotes the air circulation and heat exchange in the air supply channel and the air return channel. At least a part of the overhead floor is located below the ground, avoiding the influence on the building structure layout on the ground such as the elevation of the building and the opening on the side, and also ensuring airtightness and waterproofing; the present invention solves the problems existing in the prior art such as poor ventilation and moisture-proof effects and inconvenient building structure layout;

[0035] (2) The fan room is used to supply air to the overhead floor through the air supply channel, and the air can also return to the overhead floor through the air return channel. The air outlet device is used to discharge air to the outside, so as to achieve a better ventilation and heat exchange effect; the air return valve controls the on-off of the air return channel, facilitating the control of the air return flow;

[0036] (3) The air supply fan is used to supply air to the overhead floor through the air supply channel, and the air return fan is used to enable the air to return to the overhead floor through the air return channel. The air supply chamber, the air mixing chamber, and the air return chamber are connected in sequence, providing a working space for the air flow and heat exchange; the air supply chamber, the air mixing chamber, and the air return chamber are separated by ventilation valves, which facilitates controlling the rhythm of the air flow and heat exchange according to the actual situation;

[0037] (4) The air outlet valve is used to control the opening and closing of the air outlet, so as to open or close the air outlet according to different working conditions;

[0038] (5) The electric valve is convenient for electrical control and occupies less space;

[0039] (6) The dehumidifier is beneficial to removing impurities such as moisture in the air, so as to achieve a better ventilation and heat exchange effect;

[0040] (7) The centralized management control box is convenient for realizing automatic and remote control of electrical components, that is, it improves the degree of automation, is convenient for operation; and saves the occupied space;

[0041] (8) It achieves a very good ventilation and heat exchange effect, realizes the function of keeping the indoor cool in summer, and saves energy;

[0042] (9) It achieves a very good ventilation and heat exchange effect, realizes the function of keeping the indoor warm and moisture-proof in winter and / or transitional seasons, and saves energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic structural diagram of the indoor and outdoor thermal environment regulation building structure described in the present invention;

[0044] Figure 2 It is a schematic structural diagram of the indoor and outdoor ventilation control system described in the present invention;

[0045] Figure 3 This is the air flow diagram of the indoor and outdoor ventilation control system of the present invention under summer conditions;

[0046] Figure 4 This is the air flow diagram of the indoor and outdoor ventilation control system of the present invention under winter conditions and / or transitional season conditions.

[0047] Marks in the attached drawings and corresponding component names: 1, return air duct; 2, floor; 3, cushion layer; 4, overhead floor; 5, supply air duct; 6, precast slab; 7, floor slab; 31, fan room; 32, supply fan; 33, mixing chamber; 34, return air fan; 35, centralized management control box; 36, dehumidifier; 37, fresh air inlet; 38, ventilation valve; 39, return air chamber electric valve; 42, return air valve; 43, air outlet device; 44, air outlet; 45, air outlet valve. Detailed implementation manners

[0048] The present invention will be further described in detail below in conjunction with embodiments and the attached drawings, but the implementation manners of the present invention are not limited thereto.

[0049] Embodiment 1

[0050] As Figures 1 to 4 shown, an indoor and outdoor ventilation control system includes a floor slab 7, an overhead floor 4 provided below the floor slab 7, and a makeup air device provided below the ground. At least a part of the overhead floor 4 is located below the ground. A supply air duct 5 and a return air duct 1 communicating with the atmosphere above the ground are provided in the part of the overhead floor 4 located below the ground. The makeup air device is communicated with the supply air duct 5 and the return air duct 1.

[0051] The overhead floor 4 can achieve heat insulation, and can also make full use of the advantages of warm in winter and cool in summer underground; the supply air duct 5 and the return air duct 1 realize air circulation and heat exchange. The makeup air device takes in fresh air and further promotes the air circulation and heat exchange in the supply air duct 5 and the return air duct 1. At least a part of the overhead floor 4 is located below the ground, which avoids the influence on the building structure layout on the ground such as the elevation of the building elevation and the side opening, and also ensures airtightness and waterproofing. The present invention solves the problems existing in the prior art such as poor ventilation and moisture-proof effect and inconvenient building structure layout. Preferably, a placement space is further provided below the ground to place the makeup air device, and the placement space is isolated from the overhead floor 4 by the underground soil, and the soil also plays a further role in ventilation and heat exchange.

[0052] As a preferred technical solution, the make-up air device includes a fan room 31 and an air outlet device 43 provided outside the fan room 31 and communicating with the atmosphere above the ground. The fan room 31 is communicated with the overhead floor 4 through the air supply channel 5. The fan room 31 and the overhead floor 4 are also communicated through the return air channel 1. The return air channel 1 is also communicated with the air outlet device 43. A return air valve 42 is provided on the return air channel 1.

[0053] The fan room 31 is used to supply air to the overhead floor 4 through the air supply channel 5. Air can also return to the overhead floor 4 through the return air channel 1. The air outlet device 43 is used to discharge air to the outside, so as to achieve a better ventilation and heat exchange effect. The return air valve 42 controls the on-off of the return air channel 1, which is convenient for controlling the flow of return air.

[0054] As a preferred technical solution, the fan room 31 includes a fresh air inlet 37, a ventilation valve 38, an air supply chamber 46, a mixing chamber 33, and a return air chamber 47 that communicate with the outside of the fan room 31. The air supply chamber 46, the mixing chamber 33, and the return air chamber 47 are sequentially communicated and separated by the ventilation valve 38. A supply fan 32 communicated with the air supply channel 5 is provided in the air supply chamber 46. A return fan 34 communicated with the return air channel 1 is provided in the return air chamber 47. The return air chamber 47 is communicated with the air outlet device 43 through the return air channel 1.

[0055] The supply fan 32 is used to supply air to the overhead floor 4 through the air supply channel 5. The return fan 34 is used to enable air to return to the overhead floor 4 through the return air channel 1. The air supply chamber 46, the mixing chamber 33, and the return air chamber 47 are sequentially communicated, providing a working space for the flow and heat exchange of air. The air supply chamber 46, the mixing chamber 33, and the return air chamber 47 are separated by the ventilation valve 38, which is convenient for controlling the flow of air and the rhythm of heat exchange according to actual conditions.

[0056] As a preferred technical solution, the air outlet device 43 includes an air outlet 44 and an air outlet valve 45 that are connected to each other. The air outlet valve 45 is connected to the return air channel 1.

[0057] The air outlet valve 45 is used to control the opening and closing of the air outlet 44, so as to open or close the air outlet 44 according to different working conditions.

[0058] As a preferred technical solution, the return air valve 42, the ventilation valve 38, and the air outlet valve 45 are all electric valves.

[0059] The electric valve is convenient for electric control and occupies less space.

[0060] As a preferred technical solution, a dehumidifier 36 is provided in the mixing chamber 33.

[0061] The dehumidifier 36 is beneficial to removing impurities such as moisture in the air, so as to achieve a better ventilation and heat exchange effect.

[0062] As a preferred technical solution, a centralized management control box 35 is further provided in the fan room 31, and the centralized management control box 35 is electrically connected to the supply fan 32, the return fan 34, the return air valve 42, the ventilation valve 38, and the air outlet valve 45 respectively.

[0063] The centralized management control box 35 facilitates the realization of automatic and remote control of electrical components, that is, it improves the degree of automation, is convenient for operation; and saves occupied space. Preferably, a control system such as a PLC is installed in the centralized management control box 35.

[0064] Embodiment 2

[0065] As Figures 1 to 4 shown, as a further optimization of Embodiment 1, this embodiment includes all the technical features of Embodiment 1. In addition, this embodiment further includes the following technical features:

[0066] An indoor and outdoor ventilation control method. In the summer working condition, using the indoor and outdoor ventilation control system described above, the following steps are adopted:

[0067] S1. Turn on the supply fan 32, take air from the fresh air inlet 37, and then send the air through the air supply channel 5 to the overhead floor 4 for circulation and ventilation;

[0068] S2. Close the return air valve 42 and turn on the air outlet device 43 so that the cooled cold air does not pass through the return air channel 1.

[0069] This achieves a good ventilation and heat exchange effect, realizes the function of keeping the indoor cool in summer, and saves energy.

[0070] An indoor and outdoor ventilation control method. In the winter working condition and / or transition season working condition, using the indoor and outdoor ventilation control system described above, the following steps are adopted:

[0071] K1. Turn on the supply fan 32, take air from the fresh air inlet 37, and then send the air through the air supply channel 5 to the overhead floor 4 for circulation and ventilation;

[0072] K2. Close the air outlet device 43 and turn on the return air valve 42 and the return fan 34.

[0073] This achieves a good ventilation and heat exchange effect, realizes the function of keeping the indoor warm and moisture-proof in winter and / or transition season, and saves energy.

[0074] Embodiment 3

[0075] As Figures 1 to 4 shown, this embodiment includes all the technical features of Embodiment 1 and Embodiment 2. On the basis of Embodiment 1 and Embodiment 2, this embodiment provides a more refined implementation manner.

[0076] The present invention discloses a new type of indoor and outdoor thermal environment regulation system. After adoption, it can not only effectively improve the indoor living environment, but also alleviate the outdoor heat island effect and local climate in the residential area, achieving the purpose of comprehensively regulating the indoor and outdoor thermal environment, improving the indoor and outdoor thermal comfort in the residential area, reducing energy consumption, and improving operation efficiency.

[0077] The indoor and outdoor ventilation control system of the present invention includes an indoor and outdoor thermal environment regulation building structure and an indoor and outdoor ventilation control system.

[0078] The building structure of the present invention includes the following components:

[0079] 800mmx800mm independent return air duct 1, 100 - thick rigid floor 2, 100mm - thick C15 plain concrete cushion 3, 800mm - 1200mm - high underground overhead layer 4, 800mmx800mm independent supply air duct 5, 100mm - thick precast slab 6, household floor slab 7 with a heat transfer coefficient not greater than 1.9W / (㎡·K), etc.

[0080] The building structure of the present invention can not only ensure the enclosure of the overhead layer 4, but also achieve effective ventilation and air change.

[0081] By designing the underground overhead layer 4, the room floor is separated from the foundation, and ground moisture will not directly penetrate into the room through capillary action. The overhead layer 4 provides a space for heat exchange and ventilation, and can achieve the effect of heat preservation and insulation. Compared with the traditional elevated building with an above - ground overhead layer, the underground overhead layer 4 can make full use of the advantages of warm in winter and cool in summer underground. At the same time, making the underground overhead layer 4 can ensure that the ±0 elevation of the above - ground building remains unchanged, and has no impact on the overall building planning. The bottom of the underground overhead layer 4 adopts a 100 - thick rigid floor 2 and a 100mm - thick C15 plain concrete cushion 3 to ensure airtight waterproofing and effective heat exchange.

[0082] Supply air ducts 5 and return air ducts 1 are respectively arranged at both ends of the underground overhead layer 4. Using the underground overhead layer 4 as a ventilation air layer, a mechanical air - make - up device is designed for active regulation. The supply air duct 5 and the return air duct 1 can achieve full air circulation in the underground overhead layer 4, achieving the purpose of moisture - proofing and cooling. A 100mm - thick precast slab 6 is laid on the top of the supply air duct 5 and the return air duct 1, and then 400mm - thick soil covering is adopted to achieve the function of airtightening the overhead layer 4 and ensure convenient subsequent maintenance.

[0083] In the indoor and outdoor ventilation control system, a control system such as a PLC is arranged in the centralized management control box 35, and the ventilation valve 38 is of the normally open type.

[0084] The present invention can achieve the purpose of improving the indoor and outdoor thermal environment by centrally controlling each device for different seasons, namely summer, winter, and transitional seasons.

[0085] I. Summer working condition

[0086] When the air supply fan 32 is turned on and takes in air from the outside, after being dehumidified by the dehumidifier 36 in the air mixing chamber 33, it is sent through the buried air supply channel 5 to the underground overhead floor 4 of the building for circulation and ventilation, which can ensure the dryness of the overhead floor 4 and prevent condensation. At the same time, the outdoor air enters from the fresh air inlet 37, passes through the air supply channel 5 and the underground overhead floor 4, and then exchanges heat with the soil on a large area. The air in the return air channel 1 has been cooled.

[0087] At this time, through the centralized management control box 35, the electric valve (return air valve 42) on the return air channel 1, the electric valve 39 of the return air chamber, and the return air fan 34 are automatically closed, and the outdoor air outlet valve 45 (preferably an electric valve) and the air outlet 44 are automatically opened, ensuring that the cooled cold air does not pass through the return air channel 1 and is only sent to the outdoor air outlet 44.

[0088] Among them, the outdoor integrated air outlet device 43 can be customized in shape and air outlet 44 for different nodes.

[0089] In summary, through the airtight ventilation and moisture-proof of the overhead floor 4 and the cooling of the outdoor by the tunnel air at the same time, the purpose of comprehensively improving the indoor and outdoor thermal environment is achieved.

[0090] II. Winter and transitional season working conditions

[0091] Since there is no need to improve the outdoor thermal environment in winter and the transitional season, at this time the air temperature is lower than the wall temperature of the air supply channel 5 and the underground overhead floor 4. As the air continuously exchanges heat with the soil along the way, the air temperature gradually rises and the relative humidity decreases.

[0092] Through the centralized management control box 35, the outdoor air outlet valve 45 and the air outlet 44 are automatically closed, and the return air valve 42, the electric valve 39 of the return air chamber, and the return air fan 34 are automatically opened. At this time, all the outdoor ventilation openings of the entire regulation system are closed and the return air channel 1 is fully opened, and only internal circulation ventilation is carried out. The entire control system has formed a closed underground overhead ventilation space, which can enhance the heat storage performance of the ground, utilize the advantages of the cool summer and warm winter of the underground temperature to improve the indoor thermal environment, and achieve the purpose of indoor moisture-proof. Since the heat insulation performance of the ground is enhanced, the energy consumption loss of air conditioning and heating can also be reduced, achieving the purpose of building energy conservation.

[0093] As described above, the present invention can be preferably realized.

[0094] All the features disclosed in all the embodiments in this specification, or all the steps in the methods or processes implicitly disclosed, except for the mutually exclusive features and / or steps, can be combined and / or extended and replaced in any way.

[0095] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Based on the technical essence of the present invention, any simple modifications, equivalent replacements, and improvements made to the above embodiments within the spirit and principles of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. An indoor and outdoor ventilation control method, characterized in that, it uses an indoor and outdoor ventilation control system, and the indoor and outdoor ventilation control system includes: a floor slab (7), an overhead floor (4) provided below the floor slab (7), and a makeup air device provided below the ground. At least a part of the overhead floor (4) is located below the ground. An air supply channel (5) and a return air channel (1) communicating with the atmosphere above the ground are provided in the part of the overhead floor (4) located below the ground. The makeup air device is communicated with the air supply channel (5) and the return air channel (1); the makeup air device includes a fan room (31) and an air outlet device (43) provided outside the fan room (31) and communicating with the atmosphere above the ground. The fan room (31) is communicated with the overhead floor (4) through the air supply channel (5), the fan room (31) is also communicated with the overhead floor (4) through the return air channel (1), the return air channel (1) is also communicated with the air outlet device (43), and a return air valve (42) is provided on the return air channel (1); the fan room (31) includes a fresh air inlet (37), a ventilation valve (38), an air supply chamber (46), a mixing chamber (33), and a return air chamber (47) communicating with the outside of the fan room (31). The air supply chamber (46), the mixing chamber (33), and the return air chamber (47) are communicated in sequence and separated by the ventilation valve (38). An air supply fan (32) communicated with the air supply channel (5) is provided in the air supply chamber (46), a return air fan (34) communicated with the return air channel (1) is provided in the return air chamber (47), and the return air chamber (47) is communicated with the air outlet device (43) through the return air channel (1); the air outlet device (43) includes an air outlet (44) and an air outlet valve (45) connected to each other, and the air outlet valve (45) is connected to the return air channel (1); the return air valve (42), the ventilation valve (38), and the air outlet valve (45) are all electric valves; a dehumidifier (36) is provided in the mixing chamber (33); a centralized management control box (35) is also provided in the fan room (31), and the centralized management control box (35) is electrically connected to the air supply fan (32), the return air fan (34), the return air valve (42), the ventilation valve (38), and the air outlet valve (45) respectively. In the summer working condition, the following steps are adopted: S1. Turn on the air supply fan (32), take air from the fresh air inlet (37), and then send the air to the overhead floor (4) through the air supply channel (5) for circulation and ventilation; S2. Close the return air valve (42) and turn on the air outlet device (43) so that the cooled cold air does not pass through the return air channel (1); In the winter working condition and / or the transitional season working condition, the following steps are adopted: K1. Turn on the air supply fan (32), take air from the fresh air inlet (37), and then send the air to the overhead floor (4) through the air supply channel (5) for circulation and ventilation; K2, close the air outlet device (43), open the return air valve (42) and the return air fan (34) 。

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