Fresh air heat exchange equipment and fresh air system for ward air purification

Abstract

The present invention discloses a fresh air heat exchange device and a fresh air system for ward air purification, which relates to the technical field of fresh air heat exchange equipment, including: a fresh air heat exchanger box body, an installation box, the fresh air heat exchanger box body is provided with a fresh air inlet, a filter is arranged at a position near the fresh air inlet inside the fresh air heat exchanger box body, two limit frames are fixedly arranged at a position near the fresh air inlet inside the fresh air heat exchanger box body, two connecting ports are connected between the fresh air heat exchanger box body and the installation box, and a fixing port is arranged on the top of the installation box: the problem of the prior art that the filter can only be replaced after the equipment is shut down is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of fresh air heat exchange equipment, and in particular to a fresh air heat exchange equipment and a fresh air system for ward air purification. Background Art

[0002] Fresh air heat exchange equipment is a highly efficient air purification system that circulates indoor and outdoor air to achieve dual functions: on the one hand, it removes indoor dirty air to the outside, and on the other hand, it introduces disinfected and filtered outdoor fresh air into the room to ensure that the indoor air is always fresh and clean. The system adopts fresh air convection technology to promote the convection circulation of indoor air through the air supply and air intake mechanism, thereby maximizing the freshness and cleanliness of indoor air, providing residents with a comfortable breathing environment and protecting human health.

[0003] However, traditional fresh air heat exchange equipment faces a significant problem during use: the filter, as a key component to prevent pollutants such as dust and pollen from entering the room, needs to be replaced regularly to maintain its filtration efficiency, but the existing design often requires the equipment to be shut down before the filter can be replaced. This not only affects the continuity of indoor ventilation, but may also cause adverse effects on the indoor environment due to short-term poor air circulation caused by shutdown maintenance, especially in places with extremely high air quality requirements, such as hospitals, laboratories or precision manufacturing workshops.

[0004] Therefore, the present application provides a fresh air heat exchange device and a fresh air system for ward air purification to meet the needs. Summary of the invention

[0005] The purpose of the present application is to provide a fresh air heat exchange device and a fresh air system for ward air purification, which solves the problem that the prior art requires the equipment to be shut down before the filter can be replaced.

[0006] To solve the above problems, the present application provides the following technical solutions: a fresh air heat exchange device, comprising: a fresh air heat exchanger box, an installation box, a fresh air inlet is provided on the fresh air heat exchanger box, a filter is provided at a position near the fresh air inlet inside the fresh air heat exchanger box, two limit frames are fixedly provided at a position near the fresh air inlet inside the fresh air heat exchanger box, two connecting ports are connected between the fresh air heat exchanger box and the installation box, and a fixing port is provided at the top of the installation box;

[0007] A position switching mechanism is provided inside the installation box, and the position switching mechanism includes two containing boxes, one of which is located at a position corresponding to the connecting port, and the other is located at a position corresponding to the fixed port. The position switching mechanism can switch the positions of the two containing boxes;

[0008] Two first notches are provided at the top of the accommodation box, and two second notches and two accommodation notches are provided on the side of the accommodation box; a new filter screen pushing mechanism is arranged inside the installation box, and the new filter screen pushing mechanism is used to push the new filter screen from the inside of the installation box into the inside of the fresh air heat exchanger box body. An old filter screen pushing mechanism is arranged inside the fresh air heat exchanger box body, and the old filter screen pushing mechanism is used to push the old filter screen from the inside of the fresh air heat exchanger box body into the inside of the installation box.

[0009] Preferably, the installation box is fixedly connected to the side wall of the fresh air heat exchanger box body. A fresh air outlet, an old air inlet, and an old air outlet are provided on the fresh air heat exchanger box body. A fresh air fan is arranged inside the fresh air heat exchanger box body near the fresh air outlet, and an old air fan is arranged inside the fresh air heat exchanger box body near the old air outlet. A total heat exchange core is arranged at the center inside the fresh air heat exchanger box body, and an installation cover is installed on the top of the fresh air heat exchanger box body.

[0010] Preferably, the limiting frame is in a "U" shape, and an installation groove for adapting to the filter screen is provided on the limiting frame. Two guide plates are fixedly arranged inside the fresh air heat exchanger box body near the fresh air inlet. The guide plates are inclined, one side of the guide plate is fixedly connected to the inner wall of the fresh air heat exchanger box body, and the other side of the guide plate is fixedly connected to the side wall of the corresponding limiting frame.

[0011] Preferably, two second notches are provided on the side of the accommodation box away from the fresh air heat exchanger box body, and two accommodation notches are provided on the side of the accommodation box close to the fresh air heat exchanger box body. The first notch is communicated with the accommodation notch, and the second notch is communicated with the accommodation notch.

[0012] Preferably, the position switching mechanism further includes a first screw rod and a second screw rod rotatably connected inside the installation box. The second screw rod is above the first screw rod. A first guide rod and a second guide rod are fixedly connected inside the installation box. The second guide rod is above the first guide rod. The first screw rod cooperates with the first guide rod, and the second screw rod cooperates with the second guide rod. One end of each of the first screw rod and the second screw rod penetrates through the side wall of the installation box. An activity plate is jointly arranged on the first screw rod and the first guide rod. The activity plate is threadedly connected to the first screw rod. The activity plate slidably penetrates through the first guide rod. The activity plate can drive one of the accommodation boxes to move. One of the sliders is threadedly connected to the outside of the second screw rod, and the other slider is slidably arranged on the outside of the second guide rod. The tops of the two sliders are fixedly connected to the same moving plate. The other accommodation box is fixedly arranged on the top of the moving plate. A driving motor is fixedly arranged on the outside of the installation box. A supporting block for supporting the driving motor is fixedly arranged on the outside of the installation box. The output end of the driving motor is fixedly connected to the first screw rod, and a transmission mechanism is arranged on the outside of the installation box.

[0013] Preferably, the transmission mechanism includes a first sprocket fixedly sleeved on the outside of the first screw rod and a second sprocket fixedly sleeved on the second screw rod. The first sprocket and the second sprocket are located on the outside of the mounting box, and a chain is transmission-connected between the second sprocket and the first sprocket.

[0014] Preferably, an anti-collision mechanism is provided inside the installation box, the anti-collision mechanism includes a guide plate fixedly arranged inside the installation box, a guide notch is opened on the guide plate, the guide notch consists of two short notch parts, two inclined notch parts and a long notch part, the two short notch parts are opened near the top of the guide plate, the long notch part is opened near the bottom of the guide plate, the two short notch parts are respectively located on both sides of the long notch part, and the long notch part is connected to the short notch part through the corresponding inclined notch parts; the anti-collision mechanism also includes a plurality of guide columns fixedly connected to the bottom of the accommodating box corresponding to the movable plate, and two limit plates, a rolling rod is rotatably connected between the two limit plates, the two limit plates are respectively located on both sides of the guide plate, the rolling rod passes through the guide notch, and the plurality of guide columns all slide through the movable plate.

[0015] Preferably, two third electric push rods are fixedly provided on the outside of the installation box, and a closing plate is slidably connected to the inside of the installation box at a position corresponding to the connecting port, and the telescopic end of the third electric push rod penetrates the side wall of the installation box and is fixedly connected to the closing plate; the new filter mesh pushing mechanism includes two second electric push rods fixedly provided on the outside of the installation box, and the telescopic end of the second electric push rod penetrates the side wall of the installation box and is fixedly connected to the second push plate, and the old filter mesh pushing mechanism includes two first electric push rods, and two first electric push rods are fixedly provided on the inside of the fresh air heat exchanger box near the fresh air inlet, and the telescopic end of the first electric push rod penetrates the corresponding limit frame and is fixedly connected to the first push plate.

[0016] Preferably, a fixed mouth sealing mechanism is provided on the top of the installation box, and the fixed mouth sealing mechanism includes two fixed plates, the bottom of the fixed plate is fixedly connected to the top of the installation box, a threaded rod is rotatably connected between the two fixed plates, a limiting column is fixedly connected between the two fixed plates, a servo motor is fixedly provided on the side of one of the fixed plates, the output end of the servo motor passes through the corresponding fixed plate and is fixedly connected to one end of the threaded rod, a sealing plate is jointly provided on the threaded rod and the limiting column, the sealing plate is threadedly connected to the threaded rod, and the sealing plate slides through the limiting column.

[0017] The invention also discloses a fresh air system for ward air purification using the above-mentioned fresh air heat exchange device.

[0018] In summary, the technical effects and advantages of the present invention are as follows:

[0019] 1. In the present invention, two accommodating boxes are arranged inside the installation box, and each accommodating box has two accommodating notches, one of which has a new filter, and the other is idle for receiving the old filter. A new filter pushing mechanism is arranged inside the installation box, and an old filter pushing mechanism is arranged inside the fresh air heat exchanger box. When the filter inside the fresh air heat exchanger box needs to be replaced, the new filter pushing mechanism can be used to push the new filter inside the accommodating notch of the corresponding accommodating box through the connecting port into the installation groove of one of the limit frames when the fresh air heat exchanger is running, and the old filter pushing mechanism can be used to push the old filter inside the other limit frame through the connecting port to the other accommodating notch of the corresponding accommodating box, so that the filter can be replaced while the equipment is running continuously without stopping.

[0020] 2. In the present invention, the position switching mechanism can enable the two containing boxes to switch positions while the equipment is continuously running. When a new filter in one containing box is pushed into the fresh air heat exchanger box and replaces the old filter, the position switching mechanism can swap the positions of the two containing boxes, so that the containing box originally in the standby state is moved to the connecting port position and waits for the next replacement operation.

[0021] 3. In the present invention, in order to further ensure that the two storage boxes will not collide during the movement, an anti-collision mechanism is set inside the installation box. The mechanism ensures the stability and safety of the storage box during the movement through the coordinated use of guide plates, guide notches, guide columns, limit plates, rolling rods and other components. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the internal structure of the fresh air heat exchanger box and the installation box of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the guide plate of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the communication port of the present invention;

[0027] Figure 5 It is a partial structural schematic diagram of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the position switching mechanism of the present invention;

[0029] Figure 7 It is a partial structural schematic diagram of the present invention;

[0030] Figure 8 For the present invention Figure 6 Enlarged structural diagram at A in the middle.

[0031] In the figure: 1. fresh air heat exchanger housing; 101. old air outlet; 102. fresh air inlet; 103. fresh air outlet; 104. old air inlet; 105. installation cover; 2. installation box; 21. fixing port; 3. first electric push rod; 4. limit frame; 5. guide plate; 6. first push plate; 7. connecting port; 8. filter screen; 9. second electric push rod; 10. second push plate; 11. position switching mechanism; 111. first screw rod; 112. first guide rod; 113. drive motor; 114. second screw rod; 115. second guide rod; 116. moving plate; 117. Slider; 118. Accommodating box; 1181. First notch; 1182. Second notch; 119. Movable plate; 12. Anti-collision mechanism; 121. Guide plate; 122. Guide notch; 123. Guide column; 124. Limit plate; 125. Roller; 13. Transmission mechanism; 131. First sprocket; 132. Second sprocket; 133. Chain; 14. Fixed-mouth sealing mechanism; 141. Sealing plate; 142. Limit column; 143. Threaded rod; 144. Servo motor; 145. Fixed plate; 15. Closing plate; 16. Third electric push rod. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example: Reference Figure 1-Figure 8A fresh air heat exchange device shown in the figure includes: a fresh air heat exchanger box body 1 and an installation box 2. The installation box 2 is fixedly connected to the side wall of the fresh air heat exchanger box body 1. A fresh air inlet 102, a fresh air outlet 103, an old air inlet 104, and an old air outlet 101 are provided on the fresh air heat exchanger box body 1. Inside the fresh air heat exchanger box body 1, a fresh air fan (not shown in the figure) is provided near the fresh air outlet 103, and an old air fan (not shown in the figure) is provided near the old air outlet 101. A total heat exchange core is provided at the center inside the fresh air heat exchanger box body 1. A filter screen 8 is provided near the fresh air inlet 102 inside the fresh air heat exchanger box body 1. An installation cover 105 is installed on the top of the fresh air heat exchanger box body 1.

[0034] When the fresh air fan and the old air fan are working, the fresh air fan draws outside air into the room through the fresh air inlet 102, the filter screen 8, the total heat exchange core, and the fresh air outlet 103. The old air fan sends the indoor air out of the room through the old air inlet 104, the total heat exchange core, and the old air outlet 101. Fresh air refers to the air outside the room, and old air refers to the air inside the room.

[0035] Two limiting frames 4 are fixedly provided near the fresh air inlet 102 inside the fresh air heat exchanger box body 1. The limiting frames 4 are in a "U" shape. Installation slots for adapting to the filter screen 8 are provided on the limiting frames 4. Two guide plates 5 are fixedly provided near the fresh air inlet 102 inside the fresh air heat exchanger box body 1. The guide plates 5 are inclined. The guide plates 5 can guide the fresh air to the position corresponding to the filter screen 8. One side of the guide plate 5 is fixedly connected to the inner wall of the fresh air heat exchanger box body 1, and the other side of the guide plate 5 is fixedly connected to the side wall of the corresponding limiting frame 4. The filter screen 8 inside the fresh air heat exchanger box body 1 is provided by the installation box 2, and at least one filter screen 8 inside the fresh air heat exchanger box body 1 is working. When the filter screen 8 working inside the fresh air heat exchanger box body 1 needs to be replaced after being used for a certain period of time, the installation box 2 provides a new filter screen 8 to the inside of the fresh air heat exchanger box body 1 and allows the old filter screen 8 to be recycled into the inside of the installation box 2.

[0036] Two communication ports 7 are connected between the fresh air heat exchanger box body 1 and the installation box 2. The size of the communication ports 7 is adapted to the filter screen 8. The filter screen 8 can enter the inside of the fresh air heat exchanger box body 1 from the installation box 2 through the communication ports 7, and can also enter the installation box 2 from the fresh air heat exchanger box body 1 through the communication ports 7. A fixing port 21 is provided on the top of the installation box 2. Through the fixing port 21, the old filter screen 8 can be taken out and a new filter screen 8 can be placed inside the installation box 2.

[0037] The installation box 2 is provided with a position switching mechanism 11 inside. The position switching mechanism 11 includes two receiving boxes 118. One filter screen 8 is located at a position corresponding to the connecting port 7, and the other filter screen 8 is located at a position corresponding to the fixing port 21. The position switching mechanism 11 can switch the positions of the two receiving boxes 118, and the two receiving boxes 118 can avoid collision when they move close to each other. The top of the receiving box 118 is provided with two first notches 1181, and the side of the receiving box 118 away from the fresh air heat exchanger box 1 is provided with two second notches 1182. The receiving box 118 Two accommodating notches are provided on the side near the fresh air heat exchanger case 1, and the accommodating notches are used to accommodate the filter 8, and the first notch 1181 is connected to the accommodating notch, and the second notch 1182 is connected to the accommodating notch. A new filter pushing mechanism is provided inside the installation box 2, and the new filter pushing mechanism is used to push the new filter 8 from the inside of the installation box 2 to the inside of the fresh air heat exchanger case 1. An old filter pushing mechanism is provided inside the fresh air heat exchanger case 1, and the old filter pushing mechanism is used to push the old filter from the inside of the fresh air heat exchanger case 1 to the inside of the installation box 2.

[0038] In the initial state, one of the receiving notches of each receiving box 118 has a new filter 8, and the other receiving notch is idle (waiting to receive the old filter 8). When the filter 8 inside the fresh air heat exchanger box 1 needs to be replaced, only one receiving notch of the receiving box 118 corresponding to the position of the connecting port 7 has a new filter 8. The connecting port 7 is opened, and the new filter pushing mechanism is used to push the new filter 8 inside the receiving notch of one of the receiving boxes 118 through the connecting port 7 into the mounting groove of one of the limit frames 4, and then the old filter pushing mechanism is used to push the old filter 8 inside the other limit frame 4 through the connecting port 7 to the other receiving notch of the above-mentioned receiving box 118, and the position switching mechanism 11 is started. The position switching mechanism 11 switches the positions of the two receiving boxes 118, and the position of the above-mentioned receiving box 118 is switched to the position corresponding to the fixed port 21. The old filter 8 is taken out through the fixed port 21 and the new filter 8 is placed inside the above-mentioned receiving box 118. The position of the other receiving box 118 is switched to the position corresponding to the connecting port 7, waiting for the next replacement of the old and new filter 8.

[0039] The position switching mechanism 11 also includes a first screw rod 111 and a second screw rod 114 which are rotatably connected to the inside of the installation box 2, the second screw rod 114 is located above the first screw rod 111, the inside of the installation box 2 is fixedly connected with a first guide rod 112 and a second guide rod 115, the second guide rod 115 is located above the first guide rod 112, the first screw rod 111 cooperates with the first guide rod 112, the second screw rod 114 cooperates with the second guide rod 115, one end of the first screw rod 111 and the second screw rod 114 both penetrate the side wall of the installation box 2, the first screw rod 111 and the first guide rod 112 are jointly provided with a movable plate 119, the movable plate 119 is threadedly connected to the first screw rod 111, and the movable plate 119 slides through the first guide rod 11 2, the movable plate 119 can drive one of the accommodating boxes 118 to move, the outer side of the second screw rod 114 is threadedly connected with one of the sliders 117, the outer side of the second guide rod 115 is slidably provided with another slider 117, the tops of the two sliders 117 are fixedly connected with the same movable plate 116, and the other accommodating box 118 is fixedly provided on the top of the movable plate 116, the outer side of the installation box 2 is fixedly provided with a driving motor 113, the outer side of the installation box 2 is fixedly provided with a supporting block for supporting the driving motor 113, the output end of the driving motor 113 is fixedly connected with the first screw rod 111, and the outer side of the installation box 2 is provided with a transmission mechanism 13, when the first screw rod 111 rotates, the second screw rod 114 can be driven to rotate through the transmission mechanism 13.

[0040] The transmission mechanism 13 includes a first sprocket 131 fixedly sleeved on the outside of the first screw rod 111 and a second sprocket 132 fixedly sleeved on the second screw rod 114. The first sprocket 131 and the second sprocket 132 are located on the outside of the installation box 2, and a chain 133 is transmission-connected between the second sprocket 132 and the first sprocket 131.

[0041] The drive motor 113 is started, and the output end of the drive motor 113 drives the first screw rod 111 and the first sprocket 131 on the first screw rod 111 to rotate. The first sprocket 131 drives the second sprocket 132 and the second screw rod 114 to rotate as a whole through the chain 133. The thread rotation direction on the first screw rod 111 is opposite to the thread rotation direction on the second screw rod 114, so that the movable plate 119 and the two sliders 117 move closer to each other, and the movable plate 119 can drive one of the storage boxes 118 to move. The two sliders 117 can drive the other storage box 118 to move through the movable plate 116, so that the two storage boxes 118 move closer to each other, switch positions, and avoid collision when the two storage boxes 118 move closer to each other.

[0042] The installation box 2 is provided with an anti-collision mechanism 12 inside, and the anti-collision mechanism 12 can prevent the two receiving boxes 118 from colliding when they move close to each other. The anti-collision mechanism 12 includes a guide plate 121 fixedly arranged inside the installation box 2, and a guide notch 122 is provided on the guide plate 121. The guide notch 122 is composed of two short notch parts, two inclined notch parts, and a long notch part. The two short notch parts are provided near the top of the guide plate 121, and the long notch part is provided near the bottom of the guide plate 121. The two short notch parts are respectively located at the bottom of the long notch part. On both sides, the long notch portion and the short notch portion are connected through the corresponding inclined notch portion; the anti-collision mechanism 12 also includes a plurality of guide columns 123 and two limit plates 124 fixedly connected to the bottom of the accommodating box 118 corresponding to the movable plate 119, and a rolling rod 125 is rotatably connected between the two limit plates 124. The two limit plates 124 are respectively located on both sides of the guide plate 121, and the rolling rod 125 passes through the guide notch 122. The rolling rod 125 can run along the trajectory of the guide notch 122, and the plurality of guide columns 123 all slide through the movable plate 119.

[0043] When the movable plate 119 moves to a position close to the fixed opening 21, the rolling rod 125 enters the long strip notch at the bottom along one of the short strip notches and one of the inclined guide notches, and the height of the storage box 118 corresponding to the movable plate 119 decreases, thereby avoiding collision with the other storage box 118. The rolling rod 125 then rises along the other inclined guide notch, and finally enters the other short strip notch, and is at a position corresponding to the fixed opening 21.

[0044] Two third electric push rods 16 are fixedly arranged on the outside of the installation box 2, and a closing plate 15 is slidably connected to the inner wall of the installation box 2 and the position corresponding to the connecting port 7. The closing plate 15 can seal the connecting port 7. The telescopic end of the third electric push rod 16 penetrates the side wall of the installation box 2 and is fixedly connected to the closing plate 15. The new filter net pushing mechanism includes two second electric push rods 9 fixedly arranged on the outside of the installation box 2. The telescopic end of the second electric push rod 9 penetrates the side wall of the installation box 2 and is fixedly connected to the second push plate 10. The second push plate 10 can pass through the second notch. 1182 enters the accommodating gap, thereby pushing the new filter 8 from the inside of the installation box 2 to the inside of the fresh air heat exchanger box 1; the old filter pushing mechanism includes two first electric push rods 3, and the inside of the fresh air heat exchanger box 1 is fixed with two first electric push rods 3 near the fresh air inlet 102. The telescopic end of the first electric push rod 3 passes through the corresponding limit frame 4 and is fixedly connected with the first push plate 6. The first push plate 6 can push the old filter 8 in the installation groove of the limit frame 4 from the inside of the fresh air heat exchanger box 1 to the inside of the installation box 2.

[0045] A fixed port sealing mechanism 14 is provided at the top of the installation box 2, and the fixed port sealing mechanism 14 includes two fixed plates 145, the bottom of the fixed plate 145 is fixedly connected to the top of the installation box 2, a threaded rod 143 is rotatably connected between the two fixed plates 145, and a limiting column 142 is fixedly connected between the two fixed plates 145, a servo motor 144 is fixedly provided on the side of one of the fixed plates 145, the output end of the servo motor 144 passes through the corresponding fixed plate 145 and is fixedly connected to one end of the threaded rod 143, a sealing plate 141 is commonly provided on the threaded rod 143 and the limiting column 142, the sealing plate 141 can seal the fixed port 21, the sealing plate 141 is threadedly connected to the threaded rod 143, and the sealing plate 141 slides through the limiting column 142. When one of the receiving boxes 118 moves to the position corresponding to the fixed opening 21, the servo motor 144 is started, and the output end of the servo motor 144 drives the threaded rod 143 to rotate, so that the sealing plate 141 moves away from the fixed opening 21 and the fixed opening 21 is opened. Subsequently, the old filter screen 8 can be taken out through the fixed opening 21 and a new filter screen 8 can be placed into the other receiving gap.

[0046] Working principle:

[0047] When the filter 8 inside the fresh air heat exchanger box 1 needs to be replaced, the two third electric push rods 16 are started, and the telescopic end of the third electric push rod 16 drives the closing plate 15 to move in the direction close to the fixed opening 21, thereby opening the connecting opening 7; one of the second electric push rods 9 is started, and the telescopic end of the second electric push rod 9 drives the corresponding second push plate 10 to move in the direction close to the connecting opening 7, and the second push plate 10 enters into one of the accommodating notches through the second notch 1182, and then pushes the new filter 8 from the inside of the corresponding accommodating notch to the inside of the fresh air heat exchanger box 1, and then makes the new filter 8 dock with the mounting groove of one of the limit frames 4, completing the installation of the new filter 8; one of the first electric push rods 3 is started, and the telescopic end of the first electric push rod 3 drives the first push plate 6 to move in the direction close to the connecting opening 7, and the first push plate 6 pushes the old filter 8 in the mounting groove of the other limit frame 4 from the inside of the fresh air heat exchanger box 1 to the other accommodating notch of the above-mentioned accommodating box 118;

[0048] The two third electric push rods 16 are started, and the telescopic ends of the third electric push rods 16 drive the closing plate 15 to move away from the fixed opening 21, thereby closing the connecting port 7. The position switching mechanism 11 is started, and the position switching mechanism 11 switches the positions of the two receiving boxes 118. The positions of the above-mentioned receiving boxes 118 are exchanged to the positions corresponding to the fixed opening 21. The servo motor 144 is started, and the output end of the servo motor 144 drives the threaded rod 143 to rotate, so that the sealing plate 141 is away from the fixed opening 21, and the fixed opening 21 is opened. The old filter 8 is taken out from the corresponding receiving notch through the fixed opening 21, and a new filter 8 is placed in the other receiving notch of the above-mentioned receiving box 118. The position of the other receiving box 118 is exchanged to the position corresponding to the connecting port 7, waiting for the next replacement of the old and new filters 8, and then the fixed opening 21 is closed.

[0049] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fresh air heat exchange device, comprising: A fresh air heat exchanger box and an installation box, wherein a fresh air inlet is provided on the fresh air heat exchanger box, and the features include: a filter is provided inside the fresh air heat exchanger box near the fresh air inlet, two limit frames are fixedly provided inside the fresh air heat exchanger box near the fresh air inlet, two connecting ports are connected between the fresh air heat exchanger box and the installation box, and a fixing port is provided on the top of the installation box; A position switching mechanism is provided inside the installation box, and the position switching mechanism includes two containing boxes, one of which is located at a position corresponding to the connecting port, and the other is located at a position corresponding to the fixed port. The position switching mechanism can switch the positions of the two containing boxes; Two first notches are provided on the top of the receiving box, and two second notches and two receiving notches are provided on the side of the receiving box; a new filter pushing mechanism is provided inside the installation box, and the new filter pushing mechanism is used to push the new filter from the inside of the installation box to the inside of the fresh air heat exchanger box; an old filter pushing mechanism is provided inside the fresh air heat exchanger box, and the old filter pushing mechanism is used to push the old filter from the inside of the fresh air heat exchanger box to the inside of the installation box; The position switching mechanism also includes a first screw rod and a second screw rod rotatably connected to the inside of the installation box, a movable plate is arranged on the first screw rod, the movable plate is threadedly connected to the first screw rod, the movable plate can drive one of the accommodating boxes to move, the outer side of the second screw rod is threadedly connected to one of the sliders, the inside of the installation box is fixedly connected to a second guide rod, another slider is slidably arranged on the outer side of the second guide rod, the tops of the two sliders are fixedly connected to the same movable plate, another accommodating box is fixedly arranged on the top of the movable plate, a transmission mechanism is arranged on the outer side of the installation box, a driving motor is fixedly arranged on the outer side of the installation box, the output end of the driving motor is fixedly connected to the first screw rod, and when the first screw rod rotates, the second screw rod can be driven to rotate through the transmission mechanism; An anti-collision mechanism is arranged inside the installation box, which can prevent collision between two storage boxes when they move close to each other. The anti-collision mechanism includes a guide plate fixedly arranged inside the installation box, a guide notch is opened on the guide plate, and the guide notch consists of two short notch parts, two inclined notch parts, and a long notch part. The anti-collision mechanism also includes a plurality of guide columns fixedly connected to the bottom of the storage box corresponding to the movable plate, and two limit plates, a rolling rod is rotatably connected between the two limit plates, the two limit plates are respectively located on both sides of the guide plate, the rolling rod passes through the guide notch, and a plurality of guide columns all slide through the movable plate.

2. A fresh air heat exchange device according to claim 1, characterized in that: The installation box is fixedly connected to the side wall of the fresh air heat exchanger box, the fresh air heat exchanger box is provided with a fresh air outlet, an old air inlet and an old air outlet, the interior of the fresh air heat exchanger box is provided with a fresh air fan near the fresh air outlet, the interior of the fresh air heat exchanger box is provided with an old air fan near the old air outlet, a full heat exchange core is provided at the inner center of the fresh air heat exchanger box, and a installation cover is installed on the top of the fresh air heat exchanger box.

3. A fresh air heat exchange device according to claim 1, characterized in that: The limiting frame is in a "U" shape. An installation groove adapted to the filter screen is formed on the limiting frame. Two guide plates are fixedly arranged inside the fresh air heat exchanger box body near the fresh air inlet. The guide plates are inclined. One side of the guide plate is fixedly connected to the inner wall of the fresh air heat exchanger box body, and the other side of the guide plate is fixedly connected to the side wall of the corresponding limiting frame.

4. A fresh air heat exchange device according to claim 1, characterized in that: Two second notches are formed on the side of the accommodation box away from the fresh air heat exchanger box body. Two accommodation notches are formed on the side of the accommodation box close to the fresh air heat exchanger box body. Moreover, the first notch communicates with the accommodation notch, and the second notch communicates with the accommodation notch.

5. The fresh air heat exchange device according to claim 1, characterized in that: The second lead screw is above the first lead screw. A first guide rod is fixedly connected inside the installation box. The second guide rod is above the first guide rod. The first lead screw cooperates with the first guide rod, and the second lead screw cooperates with the second guide rod. One end of each of the first lead screw and the second lead screw penetrates through the side wall of the installation box. A movable plate is jointly arranged on the first lead screw and the first guide rod. The movable plate slidably penetrates through the first guide rod. A supporting block for supporting the driving motor is fixedly arranged outside the installation box.

6. A fresh air heat exchange device according to claim 5, characterized in that: The transmission mechanism includes a first sprocket fixedly sleeved on the outside of the first lead screw and a second sprocket fixedly sleeved on the second lead screw. The first sprocket and the second sprocket are outside the installation box. A chain is传动连接 between the second sprocket and the first sprocket.

7. A fresh air heat exchange device according to claim 5, characterized in that: Two short strip notches are formed at a position close to the top of the guide plate, and a long strip notch is formed at a position close to the bottom of the guide plate. The two short strip notches are respectively located on both sides of the long strip notch, and the long strip notch communicates with the short strip notch through the corresponding inclined notch.

8. The fresh air heat exchange device according to claim 1, characterized in that: Two third electric push rods are fixedly arranged outside the installation box. A closing plate is slidably connected inside the installation box at a position corresponding to the communication port. The telescopic end of the third electric push rod penetrates through the side wall of the installation box and is fixedly connected to the closing plate; the new filter screen pushing mechanism includes two second electric push rods fixedly arranged outside the installation box. The telescopic end of the second electric push rod penetrates through the side wall of the installation box and is fixedly connected to a second push plate. The old filter screen pushing mechanism includes two first electric push rods. Two first electric push rods are fixedly arranged inside the fresh air heat exchanger box body near the fresh air inlet. The telescopic end of the first electric push rod penetrates through the corresponding limiting frame and is fixedly connected to a first push plate.

9. The fresh air heat exchange device according to claim 1, characterized in that: A fixing port sealing mechanism is arranged on the top of the installation box. The fixing port sealing mechanism includes two fixing plates. The bottom of the fixing plate is fixedly connected to the top of the installation box. A threaded rod is rotatably connected between the two fixing plates. A limiting column body is fixedly connected between the two fixing plates. A servo motor is fixedly arranged on the side of one of the fixing plates. The output end of the servo motor penetrates through the corresponding fixing plate and is fixedly connected to one end of the threaded rod. A sealing plate is jointly arranged on the threaded rod and the limiting column body. The sealing plate is threadedly connected to the threaded rod. The sealing plate slidably penetrates through the limiting column body.

10. The fresh air system used for ward air purification is characterized by: A fresh air heat exchange device according to any one of claims 1-9 is used.

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