Fresh air fan box and fresh air unit

Abstract

This utility model discloses a fresh air distribution box and a fresh air handling unit. The fresh air distribution box includes: a distribution box body with an air inlet and multiple air outlets connected to the air inlet, each of at least some of the air outlets corresponding to a room air zone, and each of at least some of the air outlets connected to an electric air valve. At least some of the air outlets without electric air valves are equipped with normally fully closed air vents and / or normally fully open air vents; a distribution control board connected to the electric air valves, and the air valve detection port of the distribution control board is connected to the air valve feedback port of the air valve drive unit of the electric air valves, for detecting whether the corresponding air outlet is equipped with an electric air valve; and a DIP switch connected to the distribution control board for providing feedback to the distribution control board on whether the air outlet is normally fully closed or normally fully open. This utility model is applicable to various air distribution scenarios by flexibly configuring the air outlet status.

Description

Technical Field

[0001] This utility model relates to the field of fresh air technology, and in particular to a fresh air distribution box and a fresh air unit. Background Technology

[0002] Currently, a fresh air system is an independent air handling system consisting of a ventilation fan, ducts, and some accessories that can exchange and purify air. The ventilation fan filters and purifies fresh outdoor air and delivers it indoors through ducts, while simultaneously expelling stale indoor air outdoors.

[0003] Existing air distribution units are typically available in different specifications, such as four, six, eight, or ten air outlets, depending on the actual number of air outlets in different rooms. In some cases, it is even necessary to pre-order air distribution units with a certain number of air outlets to meet the requirements of the site. This results in long installation cycles, high inventory and manufacturing costs, and air distribution units with different numbers of air outlets need to be manufactured on different production lines, which reduces production efficiency. Utility Model Content

[0004] In response to the problems mentioned in the background art, this application provides a fresh air distribution box with multiple air outlets. Some of these air outlets are equipped with electric air valves, some are configured as normally fully closed air outlets, and some are configured as normally fully open air outlets. By flexibly configuring the air outlet states, it is applicable to various air distribution scenarios, eliminating the need for independent customization and shortening the installation cycle.

[0005] To achieve the above-mentioned objectives, the present invention employs the following technical solution:

[0006] In some embodiments of this application, this application relates to a fresh air distribution box, comprising:

[0007] The air distribution box has an air inlet and multiple air outlets connected to the air inlet. Each of the air outlets corresponds to a room air zone. Each of the air outlets is connected to an electric air valve. The air outlets without electric air valves are equipped with normally fully closed air vents and / or normally fully open air vents.

[0008] The air distribution control board is connected to the electric air valve, and the air valve detection port of the air distribution control board is connected to the air valve feedback port of the air valve drive unit of the electric air valve, for detecting whether the corresponding air outlet is equipped with an electric air valve.

[0009] A DIP switch, which is connected to the air distribution control board, is used to provide feedback to the air distribution control board on whether the air outlet is normally fully closed or normally fully open.

[0010] The technical solution of this embodiment has the following beneficial effects or advantages:

[0011] The air distribution box has multiple air outlets, which can meet the different number of air outlets required by users in most air distribution scenarios, and avoid the problems of long installation cycle and high production cost caused by the need to customize air distribution boxes for different air distribution scenarios.

[0012] Depending on the air distribution scenario, some air outlets can be equipped with electric air valves, while some air outlets without electric air valves can be configured to be fully open and others to be fully closed, flexibly meeting the needs of users in different air distribution scenarios.

[0013] In some embodiments of this application, the electric air valve is connected to the air outlet via an electric air valve bracket.

[0014] The technical solution of this embodiment has the following beneficial effects or advantages:

[0015] By setting up an electric air valve bracket, it is easy to install the electric air valve and connect the electric air valve to the air outlet.

[0016] In some embodiments of this application, the air distribution box has an installation space, and the installation space is designed with multiple independent air ducts. Each independent air duct receives the air distribution from the air inlet and its end is connected to the corresponding air outlet.

[0017] The technical solution of this embodiment has the following beneficial effects or advantages:

[0018] By setting up independent air ducts, interference between different air ducts can be avoided, which would affect the amount of air entering the room's airflow area and improve the accuracy of the amount of air entering the room's airflow area through the air outlet.

[0019] In some embodiments of this application, the air distribution box has a top surface, four side surfaces and a bottom surface, the air inlet and air outlet are respectively opened on different surfaces, and the air distribution control plate is disposed on one surface.

[0020] The technical solution of this embodiment has the following beneficial effects or advantages:

[0021] The air inlet and outlet are located on the four side surfaces to facilitate the arrangement of air ducts, while the air distribution control panel is located on the top surface for easy maintenance and installation.

[0022] In some embodiments of this application, when a normally fully open air vent exists, a sealing element is filled into the normally fully open air vent to form a normally fully closed air vent.

[0023] The technical solution of this embodiment has the following beneficial effects or advantages:

[0024] Depending on the user's air distribution scenario, when air supply is not required, the fully open air vents can be blocked, which reduces costs compared to setting the air valve opening to zero.

[0025] Some embodiments of this application also relate to a fresh air handling unit, including:

[0026] Fresh air conditioning equipment is used to provide fresh air to the indoor environment;

[0027] The main air distribution controller integrates a control panel and a main control unit connected to the control panel;

[0028] The fresh air distribution box includes:

[0029] The air distribution box has an air inlet and multiple air outlets connected to the air inlet. Each of the air outlets corresponds to a room air zone. Each of the air outlets is connected to an electric air valve. The air outlets without electric air valves are equipped with normally fully closed air vents and / or normally fully open air vents.

[0030] The air distribution control board is connected to the electric air valve, and the air valve detection port of the air distribution control board is connected to the air valve feedback port of the air valve drive unit of the electric air valve, for detecting whether the corresponding air outlet is equipped with an electric air valve.

[0031] A DIP switch, which is connected to the air distribution control board, is used to provide feedback to the air distribution control board on whether the air outlet is normally fully closed or normally fully open.

[0032] The main control unit is connected to the air distribution control board, and the control panel displays the ventilation status of the air outlet. After receiving the air outlet opening adjustment command from the control panel, the main control unit controls the air distribution control board to adjust the opening of the electric air valve.

[0033] The ventilation status of the air outlet includes the actual opening degree of the air outlet, fully open, and / or fully closed.

[0034] The technical solution of this embodiment has the following beneficial effects or advantages:

[0035] The main air distribution controller can display the ventilation status of the air outlets, allowing users to view it directly. It can also control and adjust the opening of the corresponding electric air valves through the control panel, making it easy to adjust the air volume.

[0036] In some embodiments of this application, the fresh air distribution box further includes:

[0037] An electric air valve detection unit, which is connected to the air distribution control board, is used to detect whether the corresponding electric air valve is blocked.

[0038] The technical solution of this embodiment has the following beneficial effects or advantages:

[0039] The reliability of the electric air valve can be detected by the electric air valve detection unit, thereby ensuring the reliability of the fresh air handling unit.

[0040] In some embodiments of this application, when the electric air valve is stuck, the air distribution control board controls the electric air valve to reset.

[0041] The technical solution of this embodiment has the following beneficial effects or advantages:

[0042] When a jammed electric air valve is detected, first control the electric air valve to reset, avoid false detection of the electric air valve, and improve the reliability of the electric air valve.

[0043] In some embodiments of this application, the fresh air handling unit further includes:

[0044] An alarm notification unit, connected to the main control unit, is used to display the air outlet number corresponding to the faulty electric air valve on the control panel when the corresponding electric air valve is blocked, and the alarm notification unit issues an alarm notification.

[0045] The technical solution of this embodiment has the following beneficial effects or advantages:

[0046] The alarm notification unit can easily and intuitively display the faulty electric air valve to the user, making it convenient for the user to deal with it as soon as possible and improving the user experience of the fresh air unit.

[0047] Other features and advantages of this utility model will become clearer after reading the detailed embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 This is a block diagram of an air conditioner.

[0050] Figure 2 This is a schematic diagram of the total heat exchanger in an existing fresh air conditioning system.

[0051] Figure 3 Here is a structural diagram of the fresh air distribution box proposed in this application;

[0052] Figure 4 This is a schematic diagram illustrating the air volume output from the fresh air distribution box to the air zone in the room according to this application.

[0053] Figure 5 This is a schematic diagram showing the connection between the fresh air distribution box, the fresh air conditioning equipment, and the distribution duct according to this application;

[0054] Figure 6 This is a schematic diagram of the fresh air distribution box proposed in this application;

[0055] Figure 7 The schematic diagram of the electric air valve in the fresh air distribution box according to this application is shown.

[0056] Figure 8 The schematic diagram of the connection between the main air distribution controller and the fresh air distribution box in the embodiment of the fresh air handling unit proposed in this application is shown below. Figure 1 ;

[0057] Figure 9 The schematic diagram of the connection between the main air distribution controller and the fresh air distribution box in the embodiment of the fresh air handling unit proposed in this application is shown below. Figure 2 ;

[0058] Figure 10 This is a schematic block diagram of the air distribution main controller in the embodiment of the fresh air handling unit proposed in this application;

[0059] Figure label:

[0060] 100. Fresh air distribution box; 110. Distribution box body; 120. Electrical control box; 121. Distribution control board; 122. DIP switch; 130. Electric air valve; 131. Air valve drive unit; 132. Motor; 133. Valve plate; 140. Air outlet; 200. Fresh air conditioning equipment; 210. Heat exchanger housing; 220. Heat exchanger core; 230. Fresh air duct; 240. Supply air duct; 250. Return air duct; 260. Exhaust air duct; 270. Supply fan; 280. Exhaust fan; 300. Distribution main controller; 310. Main control unit; 320. Control panel; 330. Alarm unit; 400. Room air zone; 410. Living room; 420. Study; 430. Secondary bedroom; 440. Master bedroom; G. Distribution duct. Detailed Implementation

[0061] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0062] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0063] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0064] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0065] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0066] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0067] See Figure 1 It shows a block diagram of the air conditioner.

[0068] Air conditioners execute a refrigeration cycle using a compressor, condenser, expansion valve, and evaporator. The refrigeration cycle involves a series of processes, including compression, condensation, expansion, and evaporation, to cool or heat an indoor space.

[0069] Low-temperature, low-pressure refrigerant enters the compressor, which compresses it into a high-temperature, high-pressure refrigerant gas and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0070] The expansion valve expands the high-temperature, high-pressure liquid refrigerant that condenses in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the expanded refrigerant in the expansion valve and returns the low-temperature, low-pressure refrigerant gas to the compressor. The evaporator achieves its cooling effect by utilizing the latent heat of refrigerant evaporation to exchange heat with the material being cooled. Throughout the cycle, the air conditioner regulates the temperature of the indoor space.

[0071] The outdoor unit of an air conditioner refers to the part of the refrigeration cycle that includes the compressor and the outdoor heat exchanger. The indoor unit of an air conditioner includes the indoor heat exchanger, and an expansion valve can be provided in either the indoor or outdoor unit.

[0072] The indoor and outdoor heat exchangers function as either condensers or evaporators. When the indoor heat exchanger is used as a condenser, the air conditioner functions as a heater in heating mode; when the indoor heat exchanger is used as an evaporator, the air conditioner functions as a cooler in cooling mode.

[0073] In some embodiments of this application, the fresh air distribution box 100 is used to distribute the fresh air supplied by the fresh air conditioning equipment 200 to different room air zones 400 (e.g., living room 410, study 420, master bedroom 440, secondary bedroom 430). The fresh air conditioning equipment 200 can refer to an existing fresh air unit, a total heat exchanger, or a fresh air dehumidifier (see the fresh air dehumidifier disclosed in application number 2021106670543). The fresh air output from the air outlet of the fresh air conditioning equipment 200 is connected to the air inlet (not shown) of the fresh air distribution box 100.

[0074] As is well known, a fresh air dehumidifier includes a refrigeration cycle system and a total heat exchanger. The refrigeration cycle system involved in the fresh air system is the same as that of an air conditioner.

[0075] See Figure 2 The total heat exchanger includes an exhaust vent EA, an exhaust fan 280, a total heat exchanger housing 210, a total heat exchanger core 220, a return air vent RA, a fresh air vent OA, a supply air vent SA, and a supply fan 270.

[0076] The heat exchanger housing 210 is equipped with an exhaust vent EA, a return air vent RA, a supply air vent SA, and a fresh air vent OA.

[0077] The exhaust vent EA is equipped with an exhaust fan 280, which is used to exhaust the exchanged air outdoors.

[0078] Return air inlet RA returns air to the house.

[0079] The air outlet SA is equipped with a blower 270, which is used to deliver the introduced fresh air into the air inlet of the fresh air distribution box 100.

[0080] The fresh air inlet (OA) is used to receive fresh air from outdoors.

[0081] The total heat exchange core 220 is located inside the total heat exchanger housing 210, and divides the space inside the total heat exchanger housing 210 into four channels that are all connected to the total heat exchange core 220.

[0082] The four channels include fresh air channel 230, supply air channel 240, return air channel 250, and exhaust air channel 260.

[0083] The fresh air duct 230 is the passageway from the fresh air inlet OA to the total heat exchanger 220.

[0084] The air supply duct 240 is the passage from one side of the total heat exchanger 220 to the air outlet SA.

[0085] The return air duct 250 is a passage from the return air outlet RA to one side of the total heat exchanger core 220.

[0086] The exhaust duct 260 is the passage from one side of the total heat exchanger core 220 to the exhaust outlet EA.

[0087] When the total heat exchanger is exchanging heat, the return air from the return air inlet RA and the fresh air from the fresh air inlet OA exchange heat through the total heat exchange core 220.

[0088] When the total heat exchanger is operating during the summer cooling season, the fresh air gains cooling energy from the return air, which lowers the temperature and dries the fresh air, thus reducing its humidity. When it is operating during the winter heating season, the fresh air gains heat from the return air, which raises the temperature and humidifies the fresh air, thus increasing its humidity.

[0089] The fresh air conditioning unit 200 with a total heat exchanger can reduce energy waste and improve air quality while achieving air exchange.

[0090] In some embodiments of this application, the fresh air output by the fresh air conditioning equipment 200 generally needs to be distributed to many rooms through the corresponding air outlet 140. The number of air outlets 140 required for air distribution varies depending on the number of rooms, and the required air volume also varies depending on the air distribution needs of different rooms.

[0091] Therefore, to avoid the need to customize different numbers of air outlets (140) for different needs, and to meet the air volume requirements of different rooms, in some embodiments of this application, see... Figure 3 The fresh air distribution box 100 includes an air inlet (not shown) and multiple air outlets 140. The number of air outlets 140 involved in this application is more than the number of air outlets commonly found on the market, for example, ten air outlets 140.

[0092] The structure of the fresh air distribution box 100 will be introduced below.

[0093] In some embodiments of this application, see Figure 3 The fresh air distribution box 100 includes a distribution box body 110.

[0094] The air distribution box 110 forms the outer shell of the fresh air distribution box 100, and is typically designed to be square, including a top surface (unmarked), a bottom surface (unmarked), and four side surfaces (unmarked).

[0095] In some embodiments of this application, the air distribution box 110 is made of high-strength ABS material.

[0096] An air inlet and multiple air outlets 140 connected to the air inlet are provided on the air distribution box 110. Depending on the arrangement requirements, the air inlet and multiple air outlets 140 are respectively arranged on different surfaces. For example, the air inlet is arranged on one side surface, and the multiple air outlets 140 are arranged on one or more of the top surface, bottom surface and other side surfaces.

[0097] See Figure 4 and Figure 5 The air inlet is connected to the air outlet SA of the fresh air conditioning equipment 200. Each air outlet 140 corresponds to a room air zone 400, which is used to distribute the fresh air at the air inlet to each room air zone 400 (e.g., living room 410, study 420, secondary bedroom 430, master bedroom 440) through the fresh air distribution box 100 and the corresponding air distribution pipes G of the air outlet 140.

[0098] In some embodiments of this application, in order to achieve independent air outlets 140, multiple independent air ducts (not shown) corresponding to the multiple air outlets 140 are provided in the air distribution box 110.

[0099] The air distribution box 110 has an installation space (not shown) within which multiple independent air ducts are designed. For example, multiple air duct covers (not shown) can be installed in the installation space to isolate multiple independent air ducts.

[0100] The inlet of the air duct is connected to the air inlet of the fresh air distribution box 100, and the outlet of the air duct is connected to the corresponding air outlet 140.

[0101] In some embodiments of this application, the number of air outlets 140 (e.g., ten air outlets 140) can be greater than or equal to the number of room air zones 400. In this way, basically all users can use this kind of fresh air distribution box 100. The production line only needs to manufacture a single model, without producing different specifications of products in batches. Standardized production reduces the frequency of mold changes, improves production efficiency, and at the same time avoids the backlog of multiple models and reduces inventory costs.

[0102] At least some of the air outlets 140 correspond to one room air zone 400. That is, depending on the number of room air zones 400, not all of the air outlets 140 of the fresh air distribution box 100 are necessarily connected to the room air zone 400.

[0103] In some embodiments of this application, for example, the fresh air distribution box 100 has ten air outlets 140, and the room air zone 400 only needs four air outlets 140. Therefore, four of the ten air outlets 140 can be used to connect the four room air zones 400, and the other air outlets 140 are completely closed to form a normally fully closed air outlet. All unused air outlets 140 are blocked and closed to reduce air duct resistance.

[0104] For example, a plug (not shown, for example, completely blocking the air outlet 140 with a material such as foam to block the corresponding air duct) is inserted at the air outlet 140 to completely close the air outlet 140.

[0105] In some embodiments of this application, at least some air outlets 140 are each connected to an electric air valve 130, which can adjust the air volume at the corresponding air outlet 140 by controlling the opening degree of the electric air valve 130.

[0106] Based on the air supply volume requirements of room air zone 400, not all air outlets 140 of the fresh air distribution box 100 need to be equipped with electric air valves 130, thereby reducing the cost of the fresh air distribution box 100.

[0107] For example, the fresh air distribution box 100 has ten air outlets 140, and the room air zone 400 only needs four air outlets 140 with adjustable air volume. Therefore, electric air valves 130 can be installed at the air outlets 140 that are connected to the four room air zones 400. The remaining air outlets 140 can be partially opened to form a normally fully open air outlet, or partially closed to form a normally fully closed air outlet, depending on the needs.

[0108] Therefore, when users select the fresh air distribution box 100, they can match the corresponding number of electric air valves 130 at certain air outlets 140 according to the specific needs of the site. The electric air valves 130 are standard optional accessories, and the quantity and installation can be selected as needed.

[0109] The same fresh air distribution box 100 can be adapted to various air distribution scenarios, such as four, six, eight, or ten air outlets, covering more than 90% of users' installation needs and improving the flexibility of the fresh air distribution box 100.

[0110] When using the fresh air distribution box 100, no on-site customization is required. The number of air outlets 140 can be configured on-site according to the needs of different rooms and air zones 400. Whether to match it with electric air valves 130 can be selected according to the different needs of different rooms and air zones 400. The installation time is shortened from 3-5 days for the original customized fresh air distribution box 100 to 1-2 days, thus shortening the installation cycle.

[0111] In some embodiments of this application, see reference 1. Figure 3 The fresh air distribution box 100 includes an electrical control box 120, which can be arranged on one of the surfaces of the distribution box body 110. For example, for ease of maintenance, the electrical control box 120 can be placed on a side surface.

[0112] It should be noted that when using the fresh air distribution box 100, it will be embedded in the ceiling. Therefore, the upward-facing surface is called the top surface, and the corresponding surface is the bottom surface.

[0113] See Figure 6 The electrical control box 120 is equipped with a ventilation control board 121.

[0114] In some embodiments of this application, the electric air valve 130 is mounted at the air outlet 140 via an electric air valve bracket (not shown).

[0115] See Figure 7 The existing electric air valve 130 includes a valve plate 133, an air valve drive unit 131 and a motor 132. The air valve drive unit 131 receives the drive signal sent by the air distribution control board 121 and drives the motor 132 to drive the valve plate 133 to move, thereby adjusting the opening degree of the electric air valve 130. When the opening degree is large, the air volume is large, and when the opening degree is small, the air volume is small.

[0116] In some embodiments of this application, in order to identify which air outlets 140 are equipped with electric air valves 130, the air valve detection port (not shown) of the air distribution control board 121 is connected to the air valve feedback port (not shown) of the air valve drive unit 131. When an electric air valve 130 is configured at an air outlet 140, the air valve detection port receives, for example, a high-level signal output by the air valve feedback port; otherwise, the air valve detection port receives, for example, a low-level signal.

[0117] The air distribution control board 121 receives a signal through its air valve detection port and identifies whether the corresponding air outlet 140 is equipped with an electric air valve 130.

[0118] It should be noted that the damper detection port and the air outlet number of the air outlet 140 are in one-to-one correspondence. For example, the damper detection ports 1 to 10 of the air distribution control board 121 correspond to the air outlet numbers 1 to 10 of the air outlet 140, respectively.

[0119] In some embodiments of this application, the electrical control box 120 is also provided with a DIP switch 122, which is connected to the air distribution control board 121.

[0120] The DIP switch 122 is used to obtain the status of the air outlet 140 (including normally fully open and normally fully closed) without the electric damper 130.

[0121] See back Figure 6 The air distribution control board 121 is connected to the DIP switch 122 and the electric air valve 130 respectively. When the air distribution control board 121 detects that the electric air valve 130 exists in the corresponding air outlet 140 through the air valve detection port, the ON / OFF state of the DIP switch 122 corresponding to the air outlet 140 is not considered. When the air distribution control board 121 detects that the electric air valve 130 does not exist in the corresponding air outlet 140 through the air valve detection port, the ON / OFF state of the DIP switch 122 corresponding to the air outlet 140 is considered.

[0122] The DIP switch 122 is an existing push-button switch. For example, when the DIP switch 122 is ON, the air outlet 140 is considered to be in the normally fully open state, and when the DIP switch 122 is OFF, the air outlet 140 is considered to be in the normally fully closed state.

[0123] After the air distribution control board 121 identifies the electric air valve 130 corresponding to the air outlet 140, it can control and adjust the opening of the electric air valve 130, thereby adjusting the air volume of the corresponding air outlet 140.

[0124] It should be noted that the pins of the DIP switch 122 and the air valve detection port need to be bound to the air outlet 140 (or the air outlet number) in advance. This binding method is a conventional technique and will not be described in detail here.

[0125] In some embodiments of this application, see Figures 8 to 10 The fresh air handling unit includes a fresh air conditioning unit 200 and the aforementioned fresh air distribution box 100.

[0126] As described above, the fresh air conditioning unit 200 exhausts fresh air into the indoor environment through the air outlet SA, and see... Figure 8 and Figure 9 The new air handling unit also includes a 300 air distribution controller.

[0127] In some embodiments of this application, see Figure 9 The main control unit 300 integrates a main control unit 310 and a control panel 320, which is connected to the main control unit 310.

[0128] The main control unit 310 is connected to the air distribution control board 121 and is used to display the status of the corresponding air outlet on the control panel 320 according to the status of the air outlet 140 identified by the air distribution control board 121.

[0129] For example, there are ten air outlets 140, numbered from 1 to 10. Air outlets 140 with numbers 1 to 4 are equipped with electric air valves 130. Air outlets 140 with numbers 5 and 7 are normally fully open. The remaining air outlets 140 are normally fully closed.

[0130] The status of the corresponding air outlet 140 will be displayed on the control panel 320. The air outlet 140 equipped with the electric air valve 130 will display the current actual opening degree of its electric air valve 130. The air outlet 140 in the normally fully open state will display the word "fully open", and the air outlet 140 in the normally fully closed state will display the word "fully closed".

[0131] In some embodiments of this application, the user can input an opening adjustment command through the control panel 320 (for example, to increase or decrease the electric air valve 130 corresponding to the air outlet 140 with air outlet number 1). The main control unit 310 receives the command and sends it to the air distribution control board 121, which controls and adjusts the opening of the corresponding electric air valve 130.

[0132] In some embodiments of this application, an electric air valve detection unit (not shown) is also provided, which is connected to the air distribution control board 121 and is used to detect whether the corresponding electric air valve 130 is blocked.

[0133] In some embodiments of this application, the electric air valve detection unit may select a current sampling unit (e.g., a sampling resistor) to sample the current flowing through the electric air valve 130. If the current suddenly increases and remains for a period of time, it is considered that the electric air valve 130 is blocked; otherwise, the electric air valve 130 is not blocked.

[0134] In some embodiments of this application, the electric air valve detection unit may select a speed sensor to detect the speed of the motor 132 in the electric air valve 130. When the speed is lower than a threshold, the electric air valve 130 is considered to be blocked; otherwise, the electric air valve 130 is not blocked.

[0135] When the air distribution control board 121 receives a signal from the electric air valve detection unit that the electric air valve 130 is stuck, it controls the electric air valve 130 to reset.

[0136] The number of resets can be selected to be multiple times to improve the reset reliability of the electric damper 130.

[0137] In some embodiments of this application, the fresh air handling unit also includes an alarm notification unit 330, which is connected to the main control unit 310.

[0138] The alarm notification unit 330 can be installed within the main air distribution controller 300 or can be installed independently of the main air distribution controller 300. See [link / reference]. Figure 10 The alarm notification unit 330 can be installed inside the air distribution main controller 300 and connected to the main control unit 310.

[0139] When the electric air valve 130 is stuck or stuck and cannot be reset, the alarm prompt unit 330 issues an alarm prompt (e.g., flashing light alarm) and displays the air outlet number corresponding to the faulty electric air valve 130 on the control panel 320 to intuitively remind the user which electric air valve 130 needs to be repaired.

[0140] In some embodiments of this application, the alarm indication unit 330 may be a conventionally designed sound (e.g., the sound emitted by a buzzer) and / or light (e.g., the sound emitted by an LED) indication circuit, which will not be described in detail here.

[0141] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0142] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A fresh air distribution box, characterized in that, include: The air distribution box has an air inlet and multiple air outlets connected to the air inlet. Each of the air outlets corresponds to a room air zone. Each of the air outlets is connected to an electric air valve. The air outlets without electric air valves are equipped with normally fully closed air vents and / or normally fully open air vents. The air distribution control board is connected to the electric air valve, and the air valve detection port of the air distribution control board is connected to the air valve feedback port of the air valve drive unit of the electric air valve, for detecting whether the corresponding air outlet is equipped with an electric air valve. A DIP switch, which is connected to the air distribution control board, is used to provide feedback to the air distribution control board on whether the air outlet is normally fully closed or normally fully open.

2. The fresh air distribution box according to claim 1, characterized in that, The electric air valve is connected to the air outlet via an electric air valve bracket.

3. The fresh air distribution box according to claim 1, characterized in that, The air distribution box has an installation space, within which multiple independent air ducts are designed. Each independent air duct receives air from the air inlet and its end is connected to the corresponding air outlet.

4. The fresh air distribution box according to claim 1, characterized in that, The air distribution box has a top surface, four side surfaces and a bottom surface, the air inlet and air outlet are respectively opened on different surfaces, and the air distribution control plate is set on one surface.

5. The fresh air distribution box according to claim 1, characterized in that, When a normally fully open air vent exists, a sealing component is filled into the normally fully open air vent to form a normally fully closed air vent.

6. A fresh air handling unit, characterized in that, include: Fresh air conditioning equipment is used to provide fresh air to the indoor environment; The main air distribution controller integrates a main control unit and a control panel connected to the main control unit; The fresh air distribution box includes: The air distribution box has an air inlet and multiple air outlets connected to the air inlet. Each of the air outlets corresponds to a room air zone. Each of the air outlets is connected to an electric air valve. The air outlets without electric air valves are equipped with normally fully closed air vents and / or normally fully open air vents. The air distribution control board is connected to the electric air valve, and the air valve detection port of the air distribution control board is connected to the air valve feedback port of the air valve drive unit of the electric air valve, for detecting whether the corresponding air outlet is equipped with an electric air valve. A DIP switch, which is connected to the air distribution control board, is used to provide feedback to the air distribution control board on whether the air outlet is normally fully closed or normally fully open. The main control unit is connected to the air distribution control board, and the control panel displays the ventilation status of the air outlet. After receiving the air outlet opening adjustment command from the control panel, the main control unit controls the air distribution control board to adjust the opening of the electric air valve. The ventilation status of the air outlet includes the actual opening degree of the air outlet, fully open, and / or fully closed.

7. The fresh air handling unit according to claim 6, characterized in that, The fresh air distribution box also includes: An electric air valve detection unit, which is connected to the air distribution control board, is used to detect whether the corresponding electric air valve is blocked.

8. The fresh air handling unit according to claim 7, characterized in that, When a fault occurs in the electric air valve, the air distribution control board controls the electric air valve to reset.

9. The fresh air handling unit according to claim 7, characterized in that, The fresh air handling unit also includes: An alarm notification unit, connected to the main control unit, is used to display the air outlet number corresponding to the faulty electric air valve on the control panel when the corresponding electric air valve is blocked, and the alarm notification unit issues an alarm notification.

Images