Double-circulation indoor air purification system

Abstract

The utility model relates to the technical field of air purification, in particular to a double-circulation indoor air purification system which comprises a shell, and a first air inlet channel, a first air outlet channel, a second air outlet channel, a second air inlet channel, a third air outlet channel, a fourth air outlet channel and a heat exchanger are arranged in the shell. The first air inlet channel comprises a first air inlet / outlet and a first fan unit; the first exhaust passage comprises a first filter element, a second fan unit and a first exhaust port; the second exhaust passage comprises a second filter element and a second air inlet / outlet; the first exhaust passage and the second exhaust passage are both communicated with the first air inlet passage; the second air inlet channel comprises a third air inlet / outlet and a third fan unit; the third exhaust passage comprises a third filter element, a fourth fan unit and a second exhaust port; the fourth exhaust passage comprises a fourth filter element and a fourth air inlet / outlet; and the third exhaust passage and the fourth exhaust passage are both communicated with the second air inlet passage. By the adoption of the scheme, an inner circulation mode and an outer circulation mode can be effectively integrated, indoor air is efficiently adjusted and purified, and the indoor air quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air purification, in particular to a double-circulation indoor air purification system. Background Art

[0002] With the acceleration of urbanization and the increasing prominence of indoor and outdoor air quality issues, indoor air purification technology has received widespread attention and rapid development. Pollutants in indoor air, such as dust, pollen, viruses, bacteria, and chemical volatiles, pose a serious threat to people's quality of life and health. Traditional indoor air purification systems usually adopt a single circulation mechanism, either only able to filter and purify indoor air through an internal circulation mode, or only able to introduce external fresh air and exhaust indoor old air through an external circulation mode. However, these traditional systems have some significant limitations.

[0003] Although the internal circulation mode can effectively reduce the concentration of indoor pollutants, long-term operation will lead to the accumulation of carbon dioxide and other metabolic gases, reducing the indoor air quality. Although the external circulation mode can introduce fresh air, it helps to improve the oxygen content and overall feeling of indoor air, but when the external air quality is poor, it may introduce more pollutants, increase the burden on the air purifier, and affect the purification effect.

[0004] Therefore, there is an urgent need to provide a dual-circulation indoor air purification system that can achieve effective integration of the internal circulation mode and the external circulation mode, efficiently regulate and purify the indoor air, and improve the indoor air quality. Utility Model Content

[0005] The utility model provides a double-circulation indoor air purification system, which can realize the effective integration of the internal circulation mode and the external circulation mode, efficiently regulate and purify the indoor air, and improve the indoor air quality.

[0006] In order to achieve the above objectives, this application provides the following technical solutions:

[0007] A dual-circulation indoor air purification system comprises a shell, wherein a first air inlet duct, a first exhaust duct, a second exhaust duct, a second air inlet duct, a third exhaust duct, a fourth exhaust duct and a heat exchanger are arranged in the shell; the heat exchanger is provided with a first heat exchange channel and a second heat exchange channel; the first air inlet duct is communicated with the first heat exchange channel of the heat exchanger, and the second air inlet duct is communicated with the second heat exchange channel of the heat exchanger;

[0008] The first air inlet duct includes a first air inlet and outlet and a first fan unit; the first exhaust duct includes a first filter element, a second fan unit and a first exhaust port; the second exhaust duct includes a second filter element and a second air inlet and outlet; the first exhaust duct and the second exhaust duct are both connected to the first air inlet duct, and a first valve is provided between the first exhaust duct and the second exhaust duct;

[0009] The second air inlet duct includes a third air inlet and outlet and a third fan unit; the third exhaust duct includes a third filter element, a fourth fan unit and a second exhaust duct; the fourth exhaust duct includes a fourth filter element and a fourth air inlet and outlet; the third exhaust duct and the fourth exhaust duct are both connected to the second air inlet duct, and a second valve is provided between the third exhaust duct and the fourth exhaust duct;

[0010] A third valve is provided between the second exhaust passage and the fourth exhaust passage;

[0011] The first air inlet and outlet, the second air inlet and outlet, the third air inlet and outlet, the fourth air inlet and outlet, the first exhaust port and the second exhaust port are all provided with valves.

[0012] Further, the first air inlet passage further includes a first electric field filter and a first evaporator;

[0013] A first fan unit and a first air inlet and outlet are sequentially arranged on one side of the first heat exchange channel of the heat exchanger, and a first electric field filter and a first evaporator are sequentially arranged on the other side.

[0014] Further, the second air intake passage further comprises a second electric field filter and a second evaporator;

[0015] A third fan unit and a third air inlet and outlet are sequentially arranged on one side of the second heat exchange channel of the heat exchanger, and a second electric field filter and a second evaporator are sequentially arranged on the other side.

[0016] Furthermore, the second fan unit is arranged between the first exhaust port and the first filter element.

[0017] Furthermore, the fourth fan unit is arranged between the second exhaust port and the third filter element.

[0018] The principles and advantages of this utility model are:

[0019] By adopting the technical solution in this application, the internal circulation mode is effectively integrated with the external circulation mode and the upper and lower wind direction switching. Through the control of each valve, different working modes can be selected according to actual needs. In the internal circulation mode, the system purifies the indoor air, removes pollutants therein, and ensures the cleanliness of the indoor air. In the external circulation mode, the system introduces fresh air from the outside, introduces it into the room after heat exchange through the heat exchanger, and maintains a stable indoor temperature.

[0020] Specifically, the design of the heat exchanger enables the system to effectively utilize energy when switching between internal and external circulation. When the system switches from internal circulation to external circulation, the heat exchanger can preheat or precool the introduced external air to meet the indoor temperature requirements. This can avoid indoor temperature fluctuations caused by the introduction of overcooled or overheated air and improve energy utilization efficiency. The precise control of the fan ensures the high efficiency of air flow. Whether it is internal circulation or external circulation, the fan can adjust the wind speed and wind direction according to actual needs to ensure a good air circulation rate. This can effectively remove the dirty air in the room and introduce fresh air to improve the indoor air quality. The filter element set in each airway further improves the efficiency and level of air purification. The filter element can effectively filter out various pollutants in the air, including particulate matter and gaseous pollutants. Through the treatment of the filter element, particulate matter such as bacteria, viruses, pollen, dust, etc. in the air can be removed, and harmful gases such as formaldehyde, benzene and other gaseous pollutants can also be removed. This can effectively improve the indoor air quality and provide a healthy and comfortable living environment.

[0021] In summary, this solution realizes the effective integration of the internal circulation mode and the external circulation mode. By reasonably controlling the working conditions of components such as valves, heat exchangers, fans and filter elements, efficient air purification effects can be achieved, indoor air quality can be improved, and people's health and comfort can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the upper internal structure of an embodiment of a double-circulation indoor air purification system of the utility model.

[0023] Figure 2 This is a schematic diagram of the lower internal structure of an embodiment of a double-circulation indoor air purification system of the utility model.

[0024] Figure 3 It is a front view of the lower internal structure of an embodiment of a double-circulation indoor air purification system of the utility model.

[0025] Figure 4 It is a schematic structural diagram of a heat exchanger in an embodiment of a double-circulation indoor air purification system of the utility model.

[0026] Figure 5 This is a first external structural schematic diagram of an embodiment of a double-circulation indoor air purification system of the utility model.

[0027] Figure 6 This is a second external structural schematic diagram of an embodiment of a double-circulation indoor air purification system of the utility model. DETAILED DESCRIPTION

[0028] The following is further described in detail through specific implementation methods:

[0029] The marks in the drawings of the specification include: shell 1, heat exchanger 2, first heat exchange channel 3, second heat exchange channel 4, first air inlet and outlet 5, first fan unit 6, third air inlet and outlet 7, third fan unit 8, first electric field filter 9, second electric field filter 10, first exhaust port 11, second fan unit 12, first filter element 13, first evaporator 14, second air inlet and outlet 15, second filter element 16, second exhaust port 17, fourth fan unit 18, third filter element 19, second evaporator 20, fourth air inlet and outlet 21, fourth filter element 22, first valve 23, second valve 24, third valve 25, channel 26.

[0030] In the description of this application, unless otherwise clearly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance; unless otherwise specified or explained, the term "plurality" refers to two or more; the terms "connected" and "fixed" should be understood in a broad sense, for example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] In the description of this specification, it should be understood that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described at the angles shown in the accompanying drawings and should not be understood as limitations on the embodiments of the present application. In addition, in the context, it should also be understood that when it is mentioned that an element is connected to the "upper", "lower", "left", or "right" of another element, it can not only be directly connected to the "upper", "lower", "left", or "right" of another element, but can also be indirectly connected to the "upper", "lower", "left", or "right" of another element through an intermediate element.

[0032] Embodiment 1:

[0033] A dual-circulation indoor air purification system comprises a housing 1, wherein a first air inlet, a first exhaust, a second exhaust, a second air inlet, a third exhaust, a fourth exhaust and a heat exchanger 2 are arranged in the housing 1. Figure 4 As shown, the heat exchanger 2 is provided with a first heat exchange channel 3 and a second heat exchange channel 4; the first air inlet is connected to the first heat exchange channel 3 of the heat exchanger 2, and the second air inlet is connected to the second heat exchange channel 4 of the heat exchanger 2. Specifically, the heat exchanger 2 is formed by stacking a number of identical metal sheets with curled edges on both sides, and the curled edges of each two adjacent metal sheets are staggered at 90 degrees to form two vertical gas channels 26, and the gas in the first heat exchange channel 3 and the second heat exchange channel 4 exchanges heat through the thin wall of the metal sheet.

[0034] like Figure 5 , Figure 6 As shown, the shell 1 includes a side shell, an upper shell and a lower shell, and a plurality of partitions are provided in the shell 1, which are tightly connected to the shell 1 to form the above-mentioned air passages. In this embodiment, the upper shell and the lower shell are removed to clearly show the components in the shell 1. The space in the shell 1 is divided into two layers by a transverse partition, such as Figure 3 As shown, two channels 26 are symmetrically arranged between the upper and lower layers to respectively realize gas circulation inside the first air inlet duct and the second air inlet duct.

[0035] like Figure 1 As shown, the first air inlet duct includes a first air inlet and outlet 5 and a first fan unit 6; Figure 2 , Figure 3 As shown, the first exhaust passage includes a first filter element 13, a second fan unit 12 and a first exhaust port 11, and the second fan unit 12 is arranged between the first exhaust port 11 and the first filter element 13. The second exhaust passage includes a second filter element 16 and a second air inlet and outlet 15; the first exhaust passage and the second exhaust passage are both connected to the first air inlet passage, and a first valve 23 is arranged between the first exhaust passage and the second exhaust passage. The first air inlet passage also includes a first electric field filter 9 and a first evaporator 14; the first heat exchange channel 3 of the heat exchanger 2 is provided with a first fan unit 6 and a first air inlet and outlet 5 on one side in sequence, and a first electric field filter 9 and a first evaporator 14 on the other side in sequence.

[0036] like Figure 1 As shown, the second air inlet includes a third air inlet and outlet 7 and a third fan unit 8; Figure 2 , Figure 3 As shown, the third exhaust passage includes a third filter element 19, a fourth fan unit 18 and a second exhaust port 17, and the fourth fan unit 18 is arranged between the second exhaust port 17 and the third filter element 19. The fourth exhaust passage includes a fourth filter element 22 and a fourth air inlet and outlet 21; the third exhaust passage and the fourth exhaust passage are both connected to the second air inlet passage, and a second valve 24 is arranged between the third exhaust passage and the fourth exhaust passage. The second air inlet passage also includes a second electric field filter 10 and a second evaporator 20; a third fan unit 8 and a third air inlet and outlet 7 are arranged in sequence on one side of the second heat exchange channel 4 of the heat exchanger 2, and a second electric field filter 10 and a second evaporator 20 are arranged in sequence on the other side.

[0037] A third valve 25 is provided between the second exhaust passage and the fourth exhaust passage; and valves are provided in the first air inlet and outlet 5, the second air inlet and outlet 15, the third air inlet and outlet 7, the fourth air inlet and outlet 21, the first exhaust port 11 and the second exhaust port 17. In this embodiment, the first valve 23, the second valve 24, the third valve 25 and each valve are air valves.

[0038] It also includes a controller, a first temperature detection device and a second temperature detection device. The controller is electrically connected to the first valve 23, the second valve 24, the third valve 25, the first temperature detection device, the second temperature detection device, and the valves provided in the first air inlet and outlet 5, the second air inlet and outlet 15, the third air inlet and outlet 7, the fourth air inlet and outlet 21, the first exhaust port 11, and the second exhaust port 17. The first temperature detection device and the second temperature detection device respectively detect the temperature of the gas in the first air inlet and the second air inlet, and respectively feed back the first temperature detection signal and the second temperature detection signal to the controller. The controller controls the display device electrically connected to the controller to display the corresponding temperature data according to the first temperature detection signal and the second temperature detection signal. The first temperature detection device and the second temperature detection device both use thermal resistance type air temperature sensors.

[0039] In this embodiment, each filter element is composed of a primary filter paper filter element, an activated carbon filter element and a secondary filter paper filter element stacked together, and is detachably arranged inside the airway; in other embodiments of the present application, a sponge filter element can also be used.

[0040] In actual application, the first air inlet and outlet 5 and the third air inlet and outlet 7 are connected to the room, and the second air inlet and outlet 15, the fourth air inlet and outlet 21, the first exhaust port 11 and the second exhaust port 17 are connected to the outside. The first air inlet and outlet 5 and the third air inlet and outlet 7 can be connected to multiple pipes respectively to achieve air purification in multiple rooms.

[0041] In the internal circulation mode: the first valve 23, the third valve 25, the valves in the first air inlet and outlet 5 and the third air inlet and outlet 7 are all open; the second valve 24, the second air inlet and outlet 15, the fourth air inlet and outlet 21, the first exhaust port 11 and the second exhaust port 17 are all closed; the first fan unit 6 is turned on and set to the air intake mode to draw air inward (inside the shell 1); the third fan unit 8 is turned on and set to the exhaust mode to exhaust air outward (indoors), and the second fan unit 12 and the fourth fan unit 18 are closed. In actual application, the opening and closing of each valve and fan unit can be flexibly controlled according to actual needs.

[0042] The air flow direction is as follows: the indoor air flows in from the first air inlet and outlet 5 under the action of the first fan unit 6, passes through the first heat exchange channel 3 of the heat exchanger 2, and then flows through the first electric field filter 9, enters the lower layer through the channel 26, and passes through the first evaporator 14, the first filter element 13, through the first valve 23 and the third valve 25, flows through the fourth filter element 22 and the second evaporator 20, returns to the upper layer through the channel 26, and then flows through the second electric field filter 10, enters the heat exchanger 2 through the second heat exchange channel 4, and finally returns to the room from the third air inlet and outlet 7 under the action of the third fan unit 8.

[0043] The components in this solution are arranged symmetrically on the left and right, that is, in other embodiments of the present application, the air inlet and outlet directions of the first air inlet and outlet 5 and the second air inlet and outlet 15 can be swapped, and the operating modes of other components can be changed accordingly, so as to achieve flexible adjustment of the air inlet and exhaust directions.

[0044] In the external circulation mode: the valves in the first air inlet and outlet 5, the third air inlet and outlet 7, the fourth air inlet and outlet 21 and the first exhaust port 11 are all open; the valves in the second air inlet and outlet 15 and the second exhaust port 17, as well as the first valve 23, the second valve 24 and the third valve 25 are all closed; the second fan unit 12 is turned on and set to the exhaust mode to exhaust to the outside (outdoors); the third fan unit 8 is turned on and set to the exhaust mode to exhaust to the outside (indoors); the first fan unit 6 and the fourth fan unit 18 are closed.

[0045] The air flow direction is as follows: indoor air flows into the shell 1 from the first air inlet and outlet 5, passes through the first fan unit 6, the heat exchanger 2, the first electric field filter 9 in sequence, and then enters the lower layer through the channel 26, and passes through the first evaporator 14 and the first filter element 13 in sequence, and is discharged to the outside from the first exhaust port 11 under the action of the second fan unit 12; outdoor air flows in from the fourth air inlet and outlet 21, passes through the fourth filter element 22 and the second evaporator 20 in sequence, flows to the upper layer through the channel 26, and after passing through the second electric field filter 10, enters the heat exchanger 2 through the second heat exchange channel 4, exchanges heat with the air in the first heat exchange channel 3 in the heat exchanger 2, and then enters the room from the third air inlet and outlet 7 under the action of the third fan unit 8.

[0046] The components in this solution are arranged symmetrically on the left and right, that is, in other embodiments of the present application, the air inlet and outlet directions of the first air inlet and outlet 5 and the second air inlet and outlet 15 can be swapped, and the operating modes of other components can be changed accordingly, so as to achieve flexible adjustment of the air inlet and exhaust directions.

[0047] The above are only embodiments of the utility model. The common sense such as the known specific structures and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for the technicians in this field, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, which will not affect the effect of the implementation of the utility model and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to explain the content of the claims.

Claims

1. A double-circulation indoor air purification system, comprising a housing, characterized in that: The housing is provided with a first air intake passage, a first exhaust passage, a second exhaust passage, a second air intake passage, a third exhaust passage, a fourth exhaust passage and a heat exchanger; the heat exchanger is provided with a first heat exchange passage and a second heat exchange passage; the first air intake passage is communicated with the first heat exchange passage of the heat exchanger, and the second air intake passage is communicated with the second heat exchange passage of the heat exchanger; The first air inlet duct includes a first air inlet and outlet and a first fan unit; the first exhaust duct includes a first filter element, a second fan unit and a first exhaust port; the second exhaust duct includes a second filter element and a second air inlet and outlet; the first exhaust duct and the second exhaust duct are both connected to the first air inlet duct, and a first valve is provided between the first exhaust duct and the second exhaust duct; The second air inlet duct includes a third air inlet and outlet and a third fan unit; the third exhaust duct includes a third filter element, a fourth fan unit and a second exhaust duct; the fourth exhaust duct includes a fourth filter element and a fourth air inlet and outlet; the third exhaust duct and the fourth exhaust duct are both connected to the second air inlet duct, and a second valve is provided between the third exhaust duct and the fourth exhaust duct; A third valve is provided between the second exhaust passage and the fourth exhaust passage; The first air inlet and outlet, the second air inlet and outlet, the third air inlet and outlet, the fourth air inlet and outlet, the first exhaust port and the second exhaust port are all provided with valves.

2. The double-circulation indoor air purification system according to claim 1, characterized in that: The first air intake passage also includes a first electric field filter and a first evaporator; A first fan unit and a first air inlet and outlet are sequentially arranged on one side of the first heat exchange channel of the heat exchanger, and a first electric field filter and a first evaporator are sequentially arranged on the other side.

3. The double-circulation indoor air purification system according to claim 1, characterized in that: The second air inlet passage also includes a second electric field filter and a second evaporator; A third fan unit and a third air inlet and outlet are sequentially arranged on one side of the second heat exchange channel of the heat exchanger, and a second electric field filter and a second evaporator are sequentially arranged on the other side.

4. The double-circulation indoor air purification system according to claim 1, characterized in that: The second fan unit is arranged between the first exhaust port and the first filter element.

5. The double-circulation indoor air purification system according to claim 1, characterized in that: The fourth fan unit is arranged between the second exhaust port and the third filter element.

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