A multifunctional fresh air air conditioning system

Abstract

The present invention provides a multifunctional fresh air air-conditioning system, including a casing, on which a first vent, a second vent, a third vent and a fourth vent are arranged, a primary filter module, a heat exchanger, a fan and a high-efficiency filter module are arranged from top to bottom inside the casing, each vent is provided with a switch valve, the switch valve and the fan are electrically connected with a PLC circuit board, the PLC circuit board controls the forward and reverse rotation of the fan and the closing of the switch valve, and further controls the air intake or air outlet of each vent. The present invention performs indoor air conditioning by arranging multiple vents. During adjustment, each vent can switch between air intake and air outlet. While providing fresh air and adjusting the room temperature, it can also purify the air in the room. It has multiple adjustment and purification modes, so as to achieve the purpose of greater flexibility and comfort.

Description

Technical Field

[0001] The invention relates to the field of air conditioning, and in particular to a multifunctional fresh air air conditioning system. Background Art

[0002] With the fresh air air conditioner of the prior art, when fresh air from outdoor is introduced into the room, it is usually blown directly into the room only after dust removal and filtration, or some technical means are used to mix the fresh air with the air-conditioned air before blowing it into the room, or the fresh air and the air-conditioned air are mixed indoors to achieve the purpose of improving blowing comfort and air quality.

[0003] At the same time, some technical means use the CO2 concentration and temperature and humidity in the room as the basis for judging the air quality in the room, so as to adjust the fresh air and temperature and humidity. However, this ignores the impact of pollution sources and dust particles in the room on air quality. The high-speed blowing of the fresh air air conditioner stirs the air in the room, making it easier to roll up the tiny dust particles in the corners of the room and on the ground and fill the entire room, causing the air quality in the room to deteriorate without further treatment. That is, the fresh air air conditioner with current technical means does not filter and purify the dust particles in the air in the room when delivering fresh air to the room.

[0004] Meanwhile, the positions of the air outlet and the return air outlet of the fresh air air conditioner or air conditioner in the prior art are often fixed, or the air outlet and the return air outlet are fixed, and cannot be changed according to the use requirements. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a multifunctional fresh air air-conditioning system. By setting up multiple air outlets that can be switched between air outlet and air intake, while providing fresh air and adjusting the room temperature, the system can also purify the air in the room. It has multiple adjustment and purification modes to achieve a more flexible and comfortable purpose.

[0006] The objective of the present invention is achieved through the following technical solutions:

[0007] A multifunctional fresh air air conditioning system comprises a casing, on which a first vent, a second vent, a third vent and a fourth vent are provided, and a primary filter module, a heat exchanger, a fan and a high-efficiency filter module are provided inside the casing from top to bottom, the first vent is provided on the outer wall of the casing above the primary filter module, the second vent is provided on the outer wall of the casing between the primary filter module and the heat exchanger, the third vent is provided on the outer wall of the casing between the fan and the high-efficiency filter module, and the fourth vent is provided on the outer wall of the casing below the high-efficiency filter module, the first vent, the second vent, the third vent and the fourth vent are all provided with switch valves, and the first to fourth switch valves, the primary filter module, the heat exchanger, the fan and the high-efficiency filter module are all electrically connected to a PLC circuit board.

[0008] In the above invention content, further, the casing is also provided with a fifth vent and a sixth vent, the fifth vent is arranged on the outer wall of the casing below the high-efficiency filter module, and the sixth vent is arranged on the outer wall of the casing above the primary filter module, and the fifth vent and the sixth vent are both provided with switch valves, and the switch valves are electrically connected to the PLC circuit board.

[0009] In the above invention, further, the fan is an axial flow fan or a mixed flow fan.

[0010] The above invention further includes a fan bracket fixed on the inner wall of the casing, the fan bracket includes an upper bracket and a lower bracket, both the upper bracket and the lower bracket are provided with ventilation holes connected to the fan, and the fan is installed and fixed between the upper and lower brackets.

[0011] In the above invention, further, the fan is a centrifugal fan.

[0012] The above invention further includes a fan bracket fixed on the inner wall of the casing, the fan bracket including an upper bracket, a middle bracket and a lower bracket, the upper bracket is provided with an upper air inlet and an upper air outlet, the lower bracket is provided with a lower air inlet and a lower air outlet, the middle bracket is arranged between the upper bracket and the lower bracket, the fan is fixed on the middle bracket, the middle bracket is provided with a middle air inlet, the middle air inlet is respectively connected with the upper air inlet, the lower air inlet and the air inlet of the fan, the upper air outlet and the lower air outlet are both connected with the air outlet of the fan, the upper air inlet, the upper air outlet, the lower air inlet and the lower air outlet are all provided with switch valves, and the switch valves are electrically connected to a PLC circuit board arranged inside the casing.

[0013] In the above invention, further, the distance between the middle air inlet and the inner wall of the casing is L, and L>=2 / 3D, where D is the diameter of the fan.

[0014] In the above invention content, further, the upper bracket is provided with two upper air outlets, and the two upper air outlets are arranged on the left and right sides of the upper air inlet, and the lower bracket is provided with two lower air outlets, and the two lower air outlets are arranged on the left and right sides of the lower air inlet, and two middle brackets are provided between the upper bracket and the lower bracket, and the two middle brackets are provided with fans and have middle air inlets, the two upper air outlets and the two lower air outlets are correspondingly connected with the air outlets of the two fans, the two middle air inlets are connected with the upper air inlet and the lower air inlet, and the air inlets of the two fans are correspondingly connected with the two middle air inlets.

[0015] In the above invention, further, the two upper air outlets are arranged symmetrically with respect to the upper air inlet, and the two lower air outlets are arranged symmetrically with respect to the lower air inlet.

[0016] In the above invention, further, the distance between the two middle air inlets is L1, and

[0017] L1>=max(D1,D2)*0.8, D1 and D2 are the diameters of the two fans.

[0018] In the above invention, further, a partition is provided between the two middle air inlets, and upper and lower ends of the partition are respectively fixed on the upper bracket and the lower bracket.

[0019] In the above invention, further, the surfaces on both sides of the partition are provided with through holes with a porosity of 70%-95%, and the inner layer of the partition is also provided with sound-absorbing cotton.

[0020] The beneficial effects of the present invention are:

[0021] The present invention performs indoor air conditioning by setting up multiple vents. During adjustment, each vent can switch between air intake and air outlet. While providing fresh air and adjusting the room temperature, it can also purify the air in the room. It has multiple adjustment and purification modes to achieve a more flexible and comfortable purpose. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 Another structural schematic diagram of the present invention;

[0024] Figure 3 This is a schematic diagram of the connection between the bracket and the fan in Example 1 and Example 2 of the present invention;

[0025] Figure 4 This is a schematic diagram of the connection between the bracket and the fan in Example 3 of the present invention;

[0026] Figure 5This is a schematic diagram of the connection between the bracket and the fan in Example 4 of the present invention;

[0027] Figure 6 This is a schematic diagram of the connection of the partitions in Example 5 of the present invention;

[0028] Figure 7 This is a schematic diagram of the surface structure of the partition plate of Example 6 of the present invention;

[0029] Figure 8 This is a schematic diagram of the internal structure of the partition according to Example 6 of the present invention.

[0030] In the figure, 1-casing, 1.1-first vent, 1.2-second vent, 1.3-third vent, 1.4-fourth vent, 1.5-fifth vent, 1.6-sixth vent, 2-primary filter module, 3-heat exchanger, 4-fan, 5-high efficiency filter module, 6-bracket, 6.1-upper bracket, 6.2-lower bracket, 6.3-middle bracket, 6.4-upper air inlet, 6.5-upper air outlet, 6.6-lower air inlet, 6.7-lower air outlet, 6.8-middle air inlet, 6.9-partition, 6.91-through hole, 6.92-sound-absorbing cotton. DETAILED DESCRIPTION

[0031] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0032] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0033] Example 1 :

[0034] A multifunctional fresh air air conditioning system, please refer to the attached Figure 1As shown, it includes a casing, and the casing 1 is provided with a first vent 1.1, a second vent 1.2, a third vent 1.3 and a fourth vent 1.4. A primary filter module 2, a heat exchanger 3, a fan 4 and a high-efficiency filter module 5 are arranged inside the casing 1 from top to bottom. The first vent 1.1 is arranged on the outer wall of the casing 1 above the primary filter module 2, the second vent 1.2 is arranged on the outer wall of the casing 1 between the primary filter module 2 and the heat exchanger 3, the third vent 1.3 is arranged on the outer wall of the casing 1 between the fan 4 and the high-efficiency filter module 5, and the fourth vent 1.4 is arranged on the outer wall of the casing 1 below the high-efficiency filter module 5. The first vent 1.1, the second vent 1.2, the third vent 1.3 and the fourth vent 1.4 are all provided with switch valves, and the switch valve and the fan 4 are electrically connected with a PLC circuit board. The PLC circuit board controls the forward and reverse rotation of the fan 4 and the closing of the switch valve, thereby controlling the air inlet or outlet of each vent.

[0035] For further information, please see the attached Figure 3 As shown, it also includes a fan bracket 6 fixed on the inner wall of the casing, the fan bracket 6 includes an upper bracket 6.1 and a lower bracket 6.2, and the upper bracket 6.1 and the lower bracket 6.2 are provided with ventilation holes connected to the fan 4, and the fan 4 is installed and fixed between the upper bracket and the lower bracket.

[0036] The present invention is further described below. During operation, the first vent 1.1 is connected to the outside through the ventilation duct, and different ventilation modes are achieved by controlling the opening or closing of each vent, including the following ventilation modes:

[0037] (1) First fresh air mode: In this mode, the PLC circuit board controls the first vent 1.1 and the third vent 1.3 to open, and the fan 4 rotates forward. Under the action of the fan 4, the outdoor fresh air flows into the first vent 1.1 through the ventilation duct, passes through the primary filter module 2 in turn, and then undergoes temperature and humidity treatment through the heat exchanger 3, and finally flows into the indoor room through the third vent 1.3 under the action of the fan 4. In this mode, the second vent 1.2 and the fourth vent 1.4 are closed.

[0038] (2) Second fresh air mode: In this mode, the PLC circuit board controls the first vent 1.1 and the fourth vent 1.4 to open, and the fan 4 rotates forward. Under the action of the fan 4, the outdoor fresh air flows into the first vent 1.1 through the ventilation duct, passes through the primary filter module 2 in turn, and then undergoes temperature and humidity treatment through the heat exchanger 3. Finally, under the action of the fan 4, it passes through the high-efficiency filter module 5 and flows into the indoor room through the fourth vent 1.4. In this mode, the second vent 1.2 and the third vent 1.3 are closed.

[0039] (3) Third fresh air mode: In this mode, the PLC circuit board controls the first vent 1.1 and the third vent 1.3 to open, and the fan 4 rotates forward. Under the action of the fan 4, the outdoor fresh air flows into the first vent 1.1 through the ventilation duct, passes through the primary filter module 2 in turn, and finally flows into the indoor room through the third vent 1.3 under the action of the fan 4. In this mode, the second vent 1.2 and the fourth vent 1.4 are closed.

[0040] (4) Fourth fresh air mode: In this mode, the PLC circuit board controls the first vent 1.1 and the fourth vent 1.4 to open, and the fan 4 rotates forward. Under the action of the fan 4, the outdoor fresh air flows into the first vent 1.1 through the ventilation duct, passes through the primary filter module 2 in turn, and finally passes through the high-efficiency filter module 5 under the action of the fan 4, and flows into the indoor room through the fourth vent 1.4. In this mode, the second vent 1.2 and the third vent 1.3 are closed.

[0041] (5) First sewage discharge mode: In this mode, the PLC circuit board controls the first vent 1.1 and the third vent 1.3 to open, and the fan 4 is reversed. Under the action of the fan 4, the indoor air enters through the third vent 1.3, and then passes through the heat exchanger 3 and the primary filter module 2 and is discharged to the outside through the first vent 1.1. In the sewage mode, the second vent 1.2 and the fourth vent 1.4 are closed.

[0042] (6) Second sewage discharge mode: In this mode, the PLC circuit board controls the first vent 1.1 and the fourth vent 1.4 to open, and the fan 4 is reversed. Under the action of the fan 4, the indoor air enters from the fourth vent 1.4 and passes through the high-efficiency filter module 5, and then passes through the heat exchanger 3 and the primary filter module 2 and is discharged to the outside through the first vent 1.1. In this mode, the second vent 1.2 and the third vent 1.3 are closed.

[0043] (7) Third sewage discharge mode: In this mode, the PLC circuit board controls the first vent 1.1 and the fourth vent 1.4 to open, and the fan 4 is reversed. Under the action of the fan 4, the indoor air enters through the fourth vent 1.4 and passes through the high-efficiency filter module 5, and then passes through the primary filter module 2 and is discharged to the outside through the first vent 1.1. In this mode, the second vent 1.2 and the third vent 1.3 are closed.

[0044] (8) Fourth sewage discharge mode: In this mode, the PLC circuit board controls the first vent 1.1 and the third vent 1.3 to open, and the fan 4 is reversed. Under the action of the fan 4, the indoor air enters through the third vent 1.3, and then passes through the primary filter module 2 and is discharged to the outside through the first vent 1.1. In the sewage mode, the second vent 1.2 and the fourth vent 1.4 are closed.

[0045] (9) First air purification mode: In this mode, the PLC circuit board controls the second vent 1.2 and the fourth vent 1.4 to open, and the fan 4 is reversed. Under the action of the fan 4, the indoor air enters from the fourth vent 1.4 and passes through the high-efficiency filter module 5, and then passes through the heat exchanger 3 and the primary filter module 2 and is discharged into the room again from the second vent 1.2. In this mode, the first vent 1.1 and the third vent 1.3 are closed.

[0046] (10) Second air purification mode: In this mode, the PLC circuit board controls the second vent 1.2 and the fourth vent 1.4 to open, and the fan 4 is reversed. Under the action of the fan 4, the indoor air enters from the fourth vent 1.4 and passes through the high-efficiency filter module 5, and then passes through the primary filter module 2 and is discharged into the room again from the second vent 1.2. In this mode, the first vent 1.1 and the third vent 1.3 are closed.

[0047] (11) Third air purification mode: In this mode, the PLC circuit board controls the second vent 1.2 and the fourth vent 1.4 to open, and the fan 4 is reversed. Under the action of the fan 4, the indoor air enters through the fourth vent 1.4 and passes through the high-efficiency filter module 5, and is then discharged into the room again through the second vent 1.2. In this mode, the first vent 1.1 and the third vent 1.3 are closed.

[0048] (12) First air conditioning mode: In this mode, the PLC circuit board controls the second vent 1.2 and the third vent 1.3 to open, and the fan 4 rotates forward. Under the action of the fan 4, the indoor air enters the heat exchanger 3 through the second vent 1.2 for temperature and humidity treatment, and is then discharged into the indoor room through the third air outlet 1.3. In this mode, the first vent 1.1 and the fourth vent 1.4 are closed.

[0049] (13) Second air conditioning mode: In this mode, the PLC circuit board controls the second vent 1.2 and the fourth vent 1.4 to open, and the fan 4 rotates forward. Under the action of the fan 4, the indoor air enters the heat exchanger 3 through the second vent 1.2 for temperature and humidity treatment, and then is discharged into the indoor room through the high-efficiency filter module 5 and the fourth air outlet 1.4. In this mode, the first vent 1.1 and the third vent 1.3 are closed.

[0050] (14) Third air conditioning mode: In this mode, the PLC circuit board controls the second vent 1.2 and the third vent 1.3 to open, and the fan 4 is reversed. Under the action of the fan 4, the indoor air enters the heat exchanger 3 through the third vent 1.3 for temperature and humidity treatment, and is then discharged into the indoor room through the second vent 1.2. In this mode, the first vent 1.1 and the fourth vent 1.4 are closed.

[0051] (15) Fourth air-conditioning mode: In this mode, the PLC circuit board controls the second vent 1.2 and the fourth vent 1.4 to open, and the fan 4 is reversed. The indoor air is fed into the room through the fourth vent 1.4 and passes through the high-efficiency filter module 5 under the action of the fan 4, and then undergoes temperature and humidity treatment through the heat exchanger 3, and is finally discharged into the room through the second vent 1.2. In this mode, the first vent 1.1 and the third vent 1.3 are closed.

[0052] (16) First air conditioning and air purification mode: In this mode, the PLC circuit board controls the second vent 1.2 and the third vent 1.3 to open, and the fan 4 rotates forward. Under the action of the fan 4, the indoor air enters through the second vent 1.2, is initially filtered by the primary filter module 2, and then is processed by the heat exchanger 3 for temperature and humidity, and finally is discharged into the indoor room through the third vent 1.3. In this mode, the first vent 1.1 and the fourth vent 1.4 are closed.

[0053] (17) Second air conditioning and air purification mode: In this mode, the PLC circuit board controls the second vent 1.2 and the fourth vent 1.4 to open, and the fan 4 rotates forward. Under the action of the fan 4, the indoor air enters through the second vent 1.2, passes through the primary filter module 2 for preliminary air filtration, then passes through the heat exchanger 3 for temperature and humidity treatment, and then passes through the high-efficiency filter module 5 for secondary filtration, and finally is discharged into the indoor room through the fourth vent 1.4. In this mode, the first vent 1.1 and the third vent 1.3 are closed.

[0054] (18) Third air conditioning and air purification mode: In this mode, the PLC circuit board controls the second vent 1.2 and the fourth vent 1.4 to open, and the fan 4 is reversed. Under the action of the fan 4, the indoor air enters through the fourth vent 1.4, is filtered by the high-efficiency filter module 5, and then is subjected to temperature and humidity treatment by the heat exchanger 3, and finally is discharged into the indoor room through the second vent 1.2. In this mode, the first vent 1.1 and the third vent 1.3 are closed.

[0055] It is necessary to explain the above embodiments that the switch valve mentioned above can be a conventional blade such as an electric blade that can block the air outlet, such as the electric rotating blade of the air outlet of the air conditioner. The fan 4 can be selected as an axial flow fan or a mixed flow fan. The PLC circuit board controls the opening and closing of the switch valve and the forward and reverse rotation of the fan, which is a conventional technical solution in this technical field. Therefore, in this embodiment, no further elaboration is made on how to control the forward and reverse rotation of the fan 4 and the opening and closing of the switch valve.

[0056] Example 2 :

[0057] The difference between this embodiment and embodiment 1 is that, please refer to the attached Figure 2As shown, the casing 1 is further provided with a fifth vent 1.5 and a sixth vent 1.6, the fifth vent 1.5 is arranged on the outer wall of the casing 1 below the high-efficiency filter module 5, and the sixth vent 1.6 is arranged on the outer wall of the casing 1 above the primary filter module 2. Similarly, the fifth vent 1.5 and the sixth vent 1.6 are also provided with a switch valve electrically connected to the PLC circuit board, and the PLC circuit board controls the forward and reverse rotation of the fan 4 and the closing of the switch valve, thereby controlling the fifth vent 1.5 and the sixth vent 1.6 to inlet or outlet air. Specifically, in this embodiment, the fifth vent 1.5 and the sixth vent 1.6 are connected to another indoor room through the ventilation duct, and the air and temperature of another room can be adjusted by using the present invention, which specifically includes:

[0058] (19) Fifth fresh air mode: In this mode, the PLC circuit board controls the first vent 1.1 and the fifth vent 1.5 to open, and the fan rotates forward. Under the action of the fan 4, outdoor fresh air enters through the first vent 1.1, is primarily filtered by the primary filter module 2, and then undergoes temperature and humidity treatment through the heat exchanger 3. Finally, it passes through the high-efficiency filter module 5 and is discharged into the second room through the fifth vent 1.5. In this mode, the second vent 1.2, the third vent 1.3, the fourth vent 1.4 and the sixth vent 1.6 are all closed.

[0059] (20) Sixth fresh air mode: In this mode, the PLC circuit board controls the first vent 1.1, the fourth vent 1.4, and the fifth vent 1.5 to open, and the fan rotates forward. Under the action of the fan 4, the outdoor fresh air enters through the first vent 1.1, is filtered by the primary filter module 2, and then undergoes temperature and humidity treatment by the heat exchanger 3. Finally, after passing through the high-efficiency filter module 5, it enters the first room and the second room through the fourth vent 1.4 and the fifth vent 1.5 respectively. In this mode, the second vent 1.2, the third vent, and the sixth vent 1.6 are closed.

[0060] (21) Fifth sewage discharge mode: In this mode, the PLC circuit board controls the first vent 1.1 and the fifth vent 1.5 to open, and the fan 4 is reversed. Under the action of the fan 4, the indoor air of the second room enters through the fifth vent 1.5, is filtered by the high-efficiency filter module 5, is subjected to temperature and humidity treatment by the heat exchanger 3, and is filtered by the primary filter module 2. Finally, the air is discharged to the outside through the first vent 1.1. In this mode, the second vent 1.2, the third vent 1.3, the fourth vent 1.4 and the sixth vent 1.6 are all closed.

[0061] (22) Sixth sewage discharge mode: In this mode, the PLC circuit board controls the first vent 1.1, the fourth vent 1.4, and the fifth vent 1.5 to open, and the fan 4 is reversed. Under the action of the fan 4, the air in the first room and the second room enters through the fourth vent 1.4 and the fifth vent 1.5 respectively, is filtered by the advanced filter module 5, is subjected to temperature and humidity treatment by the heat exchanger 3, and is filtered by the primary filter module 2, and is finally discharged to the outside through the first vent 1.1. In this mode, the second vent 1.2, the third vent, and the sixth vent 1.6 are closed.

[0062] (23) Seventh sewage discharge mode: In this mode, the PLC circuit board controls the first vent 1.1, the third vent 1.3, and the fifth vent 1.5 to open, and the fan 4 is reversed. Under the action of the fan 4, the air in the first room and the second room enter through the third vent 1.3 and the fifth vent 1.5 respectively. The air in the first room is subjected to temperature and humidity treatment by the heat exchanger 3 and filtered by the primary filter module 2, and then discharged to the outside through the first air outlet 1.1. The air in the second room is filtered by the high-efficiency filter module 5, subjected to temperature and humidity treatment by the heat exchanger 3, and filtered by the primary filter module 2, and finally discharged to the outside through the first air outlet 1.1. In this mode, the second vent 1.2, the fourth vent 1.4, and the sixth vent 1.6 are closed.

[0063] (24) Fourth air purification mode: In this mode, the PLC circuit board controls the fifth vent 1.5 and the sixth vent 1.6 to open, and the fan 4 is reversed. Under the action of the fan 4, the air in the second room enters through the fifth vent 1.5, is filtered by the high-efficiency filter module 5, is subjected to temperature and humidity treatment by the heat exchanger 3, and is filtered by the primary filter module 2, and is finally discharged into the second room again through the sixth vent 1.6. In this mode, the first vent 1.1, the second vent 1.2, the third vent 1.3, and the fourth vent 1.4 are closed.

[0064] (25) Fifth air purification mode: In this mode, the PLC circuit board controls the fifth vent 1.5 and the sixth vent 1.6 to open, and the fan 4 rotates forward. Under the action of the fan 4, the air in the second room enters through the sixth vent 1.6, is filtered by the primary filter module 2, subjected to temperature and humidity treatment by the heat exchanger 3, and filtered by the high-efficiency filter module 5, and is finally discharged into the second room again through the fifth vent 1.5. In this mode, the first vent 1.1, the second vent 1.2, the third vent 1.3, and the fourth vent 1.4 are closed.

[0065] (26) Sixth air purification mode: In this mode, the PLC circuit board controls the fifth vent 1.5 and the sixth vent 1.6 to open, and the fan 4 is reversed. Under the action of the fan 4, the air in the second room enters through the fifth vent 1.5, is filtered by the high-efficiency filter module 5 and the primary filter module 2, and is finally discharged into the second room through the sixth vent 1.6. In this mode, the first vent 1.1, the second vent 1.2, the third vent 1.3, and the fourth vent 1.4 are closed.

[0066] (27) Seventh air purification mode: In this mode, the PLC circuit board controls the fifth vent 1.5 and the sixth vent 1.6 to open, and the fan 4 rotates forward. Under the action of the fan 4, the air in the second room enters through the sixth vent 1.6, is filtered by the primary filter module 2 and the high-efficiency filter module 5, and is finally discharged into the second room again through the fifth vent 1.5. In this mode, the first vent 1.1, the second vent 1.2, the third vent 1.3, and the fourth vent 1.4 are closed.

[0067] (28) Fifth air-conditioning mode: In this mode, the PLC circuit board controls the fifth vent 1.5 and the sixth vent 1.6 to open, and the fan 4 is reversed. Under the action of the fan 4, the air in the second room enters through the fifth vent 1.5, is filtered by the high-efficiency filter module 5, and is subjected to temperature and humidity treatment by the heat exchanger 3, and is finally discharged into the second room through the sixth vent 1.6. In this mode, the first vent 1.1, the second vent 1.2, the third vent 1.3, and the fourth vent 1.4 are closed.

[0068] (29) Sixth air-conditioning mode: In this mode, the PLC circuit board controls the fifth vent 1.5 and the sixth vent 1.6 to open, and the fan 4 rotates forward. Under the action of the fan 4, the air in the second room enters through the sixth vent 1.6, is filtered by the primary filter module 2, subjected to temperature and humidity treatment by the heat exchanger 3, and filtered by the high-efficiency filter module 5, and is finally discharged into the second room through the fifth vent 1.5. In this mode, the first vent 1.1, the second vent 1.2, the third vent 1.3, and the fourth vent 1.4 are closed.

[0069] In summary, in this embodiment, by providing the fifth vent 1.5 and the sixth vent 1.6 on the housing 1, the second room can be air-conditioned, which increases the diversity of use of the present invention.

[0070] Embodiment 3:

[0071] In this embodiment, the difference from the embodiment 1 and the embodiment 2 is that the fan 4 is set as a centrifugal fan. Figure 4As shown, the fan bracket 6 includes an upper bracket 6.1, a middle bracket 6.3 and a lower bracket 6.2, the upper bracket 6.1 is provided with an upper air inlet 6.4 and an upper air outlet 6.5, the lower bracket 6.2 is provided with a lower air inlet 6.6 and a lower air outlet 6.7, the middle bracket 6.3 is arranged between the upper bracket 6.1 and the lower bracket 6.2, the fan 4 is fixed on the middle bracket 6.3, the middle bracket 6.3 is provided with a middle air inlet 6.8, the middle air inlet 6.8 is respectively connected with the upper air inlet 6.4, the lower air inlet 6.6 and the air inlet of the fan 4, the upper air outlet 6.5 and the lower air outlet 6.7 are both connected with the air outlet of the fan 4, the upper air inlet 6.4, the upper air outlet 6.5, the lower air inlet 6.6 and the lower air outlet 6.7 are all provided with switch valves, and the switch valves are electrically connected to the PLC circuit board arranged inside the casing 1.

[0072] Specifically, when the air flow in the casing 1 is required to flow from top to bottom, the PLC controls the switch valve on the air inlet 6.4 on the circuit board to open, and the upper air inlet 6.4 is opened. At the same time, the upper air outlet 6.5 is closed, the lower air inlet 6.6 is closed, and the lower air outlet 6.7 is opened. Due to the rotation of the centrifugal fan, the fan 4 generates negative pressure at the middle air inlet 6.8, and the air flow enters the middle air inlet 6.8 from the upper air inlet 6.4, and then is discharged from the lower air outlet 6.7. The switch valve mentioned in this embodiment is the same as the switch valve in Embodiment 1 and Embodiment 2, and are all conventional blades such as electric blades that can block the air outlet, such as the electrically rotating blades of the air outlet of the air conditioner.

[0073] More specifically, when the airflow of the casing 1 needs to move from bottom to top, the PLC control circuit board controls the lower air inlet 6.6 to open, the lower air outlet 6.7 to close, the upper air inlet 6.4 to close, and the upper air outlet 6.5 to open, and the fan 4 generates negative pressure at the middle air inlet 6.8, and the airflow enters the middle air inlet 6.8 from the lower air inlet 6.6 and is finally discharged from the upper air outlet 6.5.

[0074] From the above, it can be seen that in this embodiment, by controlling the opening or closing of the upper air inlet 6.4, the upper air outlet 6.5, the lower air inlet 6.6, and the lower air outlet 6.7 on the bracket 6, the wind path in the casing 1 can be changed (specifically from top to bottom or from bottom to top) without reversing the fan 4. Compared with the solutions of Examples 1 and 2, there is no need to stop the fan 4. The fan only needs to keep rotating during the process, which makes the operation of the entire air conditioner more stable, the fan is not easily damaged, and the service life of the fan is increased.

[0075] Preferably, in order to reduce the noise of the fan 4 during operation, the distance between the middle air inlet 6.8 and the inner wall of the casing is L, and L>=2 / 3D, where D is the diameter of the fan.

[0076] Embodiment 4:

[0077] Please refer to the attached Figure 5 As shown, in this embodiment, different from Embodiment 4, the upper bracket 6.1 is provided with two upper air outlets 6.5, and the two upper air outlets 6.5 are arranged on the left and right sides of the upper air inlet 6.4, and the lower bracket 6.2 is provided with two lower air outlets 6.7, and the two lower air outlets 6.7 are arranged on the left and right sides of the lower air inlet 6.6, and two middle brackets 6.3 are arranged between the upper bracket 6.1 and the lower bracket 6.2, and the two middle brackets 6.3 are provided with fans 4 and have middle air inlets 6.8, the two upper air outlets 6.5 and the two lower air outlets 6.7 are correspondingly connected to the air outlets of the two fans 4, the two middle air inlets 6.8 are connected to the upper air inlet 6.4 and the lower air inlet 6.6, and the air inlets of the two fans 4 are correspondingly connected to the two middle air inlets 6.8.

[0078] Preferably, the two upper air outlets 6.5 are disposed symmetrically with respect to the upper air inlet 6.4, and the two lower air outlets 6.7 are disposed symmetrically with respect to the lower air inlet 6.6.

[0079] When the air flow in the casing 1 needs to flow from top to bottom, the PLC control circuit board controls the two upper air outlets 6.5 to be closed, the upper air inlet 6.4 to be opened, the lower air inlet 6.6 to be closed, and the two lower air outlets 6.7 to be opened. Under the action of the two fans 4, the air flow enters the two middle air inlets 6.8 from the upper air inlet 6.4, and is then discharged through the two lower air outlets 6.7 respectively. In this embodiment, since two fans 4 are provided, the air intake amount per unit time is increased, the ventilation amount of the fans 4 becomes larger, and the air volume blown into the room is also increased accordingly. Similarly, when the air path in the casing 1 needs to be converted, the PLC control circuit board controls the two lower air outlets 6.7 to be closed, the lower air inlet 6.6 to be opened, the upper air inlet 6.4 to be closed, and the two upper air outlets 6.5 to be opened. Under the action of the two fans 4, the air flow enters the two middle air inlets 6.8 through the lower air inlet 6.6, and is then discharged through the two upper air outlets 6.5.

[0080] In this embodiment, the fan 4, the upper air outlet 6.5 and the lower air outlet 6.7 are symmetrically arranged on the bracket 6, so as to increase the air intake and air outlet of the air conditioner.

[0081] Preferably, in order to reduce the noise of the fan 4 during operation, the distance between the two middle air inlets is L, and L>=max(D1, D2)*0.8, where D1 and D2 are the diameters of the two fans.

[0082] Embodiment 5:

[0083] Please refer to the attached Figure 6As shown, different from Example 4, in this embodiment, a partition 6.9 is further provided between the two middle air inlets 6.8, and the upper and lower ends of the partition 6.9 are respectively fixed on the upper bracket 6.1 and the lower bracket 6.2. The purpose of arranging the partition 6.9 in this embodiment is to isolate the noise of the two fans 4, thereby reducing the coupling effect of the noise of the two fans 4.

[0084] For further information, please see the attached Figure 7 and attached Figure 8 As shown, through holes 6.91 with a porosity of 70%-95% are provided on the surfaces of both sides of the partition 6.9, and sound-absorbing cotton 6.92 is also provided on the inner layer of the partition 6.9. By providing the through holes 6.91 on the surface of the partition 6.9, the noise of the two fans can be absorbed by the sound-absorbing cotton 6.92 through the through holes 6.91, thereby further reducing the noise of the fan 4 during operation.

[0085] The above-mentioned embodiments only express the specific implementation of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A multifunctional fresh air air conditioning system, characterized in that: The invention comprises a casing, wherein the casing is provided with a first vent, a second vent, a third vent and a fourth vent, and a primary filter module, a heat exchanger, a fan and a high-efficiency filter module are arranged inside the casing from top to bottom, wherein the first vent is arranged on the outer wall of the casing above the primary filter module, the second vent is arranged on the outer wall of the casing between the primary filter module and the heat exchanger, the third vent is arranged on the outer wall of the casing between the fan and the high-efficiency filter module, and the fourth vent is arranged on the outer wall of the casing below the high-efficiency filter module, and the first vent, the second vent, the third vent and the fourth vent are all provided with switch valves, The first to fourth switch valves, the primary filter module, the heat exchanger, the fan and the high-efficiency filter module are all electrically connected to the PLC circuit board, and also include a fan bracket fixed on the inner wall of the casing, the fan bracket includes an upper bracket, a middle bracket and a lower bracket, the upper bracket is provided with an upper air inlet and an upper air outlet, the lower bracket is provided with a lower air inlet and a lower air outlet, and the upper bracket is provided with two upper air outlets. The two upper air outlets are arranged on the left and right sides of the upper air inlet, and the lower bracket is provided with two lower air outlets. The two lower air outlets are arranged on the left and right sides of the lower air inlet. Two middle brackets are provided between the upper bracket and the lower bracket. The two middle brackets are provided with fans and have middle air inlets. The two upper air outlets and the two lower air outlets are correspondingly connected with the air outlets of the two fans, and the two middle air inlets are connected with the upper air inlet and the lower air inlet. The air inlets of the two fans are correspondingly connected with the two middle air inlets. A partition is provided between the two middle air inlets, and the upper and lower ends of the partition are respectively fixed on the upper bracket and the lower bracket, and the surfaces on both sides of the partition are provided with through holes with a porosity of 70%-95%, and the inner layer of the partition is also provided with sound-absorbing cotton.

2. A multifunctional fresh air air conditioning system according to claim 1, characterized in that: The casing is also provided with a fifth vent and a sixth vent. The fifth vent is arranged on the outer wall of the casing below the high-efficiency filter module, and the sixth vent is arranged on the outer wall of the casing above the primary filter module. The fifth vent and the sixth vent are both provided with switch valves, and the switch valves are electrically connected to the PLC circuit board.

3. A multifunctional fresh air air conditioning system according to claim 1 or 2, characterized in that: The fan is an axial flow fan or a mixed flow fan.

4. A multifunctional fresh air air conditioning system according to claim 1 or 2, characterized in that: The fan is a centrifugal fan.

5. A multifunctional fresh air air conditioning system according to claim 4, characterized in that: The upper air inlet, the upper air outlet, the lower air inlet and the lower air outlet are all provided with switch valves, and the switch valves are electrically connected to a PLC circuit board arranged inside the casing.

6. A multifunctional fresh air air conditioning system according to claim 5, characterized in that: The distance between the middle air inlet and the inner wall of the casing is L, and L>=2 / 3D, where D is the diameter of the fan.

7. A multifunctional fresh air air conditioning system according to claim 5, characterized in that: The two upper air outlets are arranged symmetrically with respect to the upper air inlet, and the two lower air outlets are arranged symmetrically with respect to the lower air inlet.

8. A multifunctional fresh air air conditioning system according to claim 1 or 7, characterized in that: The distance between the two middle air inlets is L1, and L1>=max(D1, D2)*0.8, where D1 and D2 are the diameters of the two fans.

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