Medical air purifier

Abstract

The application discloses a medical air purifier, which comprises a shell and an air filter arranged in the shell. The air filter comprises a shell body, an air inlet, an air outlet and a mandrel vertically arranged at the center of the shell body. The shell body and the mandrel are provided with a spiral flow guide plate which is arranged in the axial direction of the mandrel. A particle counter and a control module are further arranged in the shell. The air outlet of the air filter is connected to the air inlet of an electromagnetic valve. The two air outlets of the electromagnetic valve are correspondingly connected to the particle counter and the air outlet through hole on the shell. The control module generates a valve switching signal according to the set period, controls the electromagnetic valve to open the gas channel between the air outlet of the air filter and the air outlet through hole on the shell or the gas channel between the air outlet of the air filter and the particle counter. The application can avoid the waste caused by frequent replacement of the filter element and the influence on the air purification effect caused by the untimely replacement of the filter element.

Description

Technical Field

[0001] This invention relates to the field of medical equipment, and in particular to a medical air purifier. Background Technology

[0002] The operating room is a crucial technical department in a hospital, providing surgical and emergency care for patients. It should be connected to other surgical departments and located near the blood bank, intensive care unit, and anesthesia recovery room. Effective management of the four routes of surgical site infection is essential: the air in the operating room; surgical supplies; and the fingers of doctors and nurses, as well as the patient's skin, to prevent infection and ensure surgical success. When the air cleanliness in the operating room does not meet requirements, it needs to be filtered through an air filtration system; the effectiveness of the filter cartridge is fundamental to ensuring filtration quality. Summary of the Invention

[0003] The main objective of this invention is to provide a medical environment post-construction monitoring system. This medical air purifier can simultaneously avoid the waste caused by frequent filter replacement and the situation where untimely filter replacement affects the air purification effect.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a medical air purifier, comprising a housing and an air filter disposed within the housing, wherein the air filter comprises a housing, an air inlet, an air outlet, and a spindle vertically disposed at the center of the housing, wherein a spiral guide plate is provided between the housing and the spindle and spirally arranged along the axial direction of the spindle, wherein the inner end of the spiral guide plate is connected to the outer wall of the spindle and the outer end is connected to the housing, thereby forming a rotating cavity surrounded by the housing, the spiral guide plate, and the spindle;

[0005] The rotating cavity is filled with a filter element. The air inlet is located at the upper part of the housing and communicates with the upper end of the rotating cavity. The air outlet located at the bottom of the housing is communicated with the lower end of the rotating cavity. A fan is provided below the rotating cavity. The pitch of the spiral guide plate gradually increases along the spindle direction, thereby making the thickness of the filter element gradually increase in the spiral direction of the rotating cavity.

[0006] The housing also houses a particle counter and a control module. The particle counter is connected to an area near the air filter inlet via a pipe equipped with a first solenoid valve. The air filter outlet is connected to the air inlet of a second solenoid valve. The two outlets of the second solenoid valve are correspondingly connected to the particle counter and the air outlet holes on the housing. The control module generates a first valve on / off signal and a second valve switching signal according to a set period, controlling the opening and closing of the first solenoid valve and controlling the second solenoid valve to open the gas passage between the air filter outlet and the air outlet holes on the housing or between the second solenoid valve and the particle counter.

[0007] The following are further improvements to the above technical solution:

[0008] 1. In the above scheme, the outer casing is equipped with a display screen connected to a particle counter, which is used to display the particle content data in the gas before and after purification measured by the particle counter.

[0009] 2. In the above scheme, a light alarm connected to the control module is installed on the outer shell. The control module compares the particle content values ​​in the gas before and after purification from the particle counter. When the difference in particle content in the gas before and after purification is lower than a set threshold, an alarm signal is generated to drive the light alarm to light up.

[0010] 3. In the above scheme, the upper part of the outer shell has an air inlet hole that matches the air inlet on the shell, and the bottom of the outer shell has an air outlet hole that matches the air outlet of the particle counter and the air filter.

[0011] 4. In the above scheme, at least three steering wheels are installed on the lower surface of the housing.

[0012] 5. In the above scheme, the steering wheel is mounted on the outer shell via a support beam.

[0013] 6. In the above scheme, the air inlet is located on the side surface of the upper part of the housing.

[0014] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0015] 1. The medical air purifier of the present invention extends the filtration path and improves the filtration effect within a small volume. At the same time, the pitch of the spiral guide plate gradually increases along the spindle direction, thereby gradually increasing the thickness of the filter element in the spiral direction of the rotating cavity. This improves the problem of the overall filtration performance decline caused by the large difference in filtration performance decay in different areas of the filter element after prolonged use. It also increases the negative pressure intensity at the end of the filter element away from the fan and improves the uniformity of negative pressure inside the filter element. This helps to reduce the difference in filtration performance in different areas of the filter element over time, thereby extending the service life of the air filter and improving the overall filtration effect.

[0016] 2. The medical air purifier of the present invention can accurately determine the time to replace the filter element by periodically detecting the air quality before and after the air is filtered by the air filter. This can avoid the waste caused by frequent filter element replacement and the situation where the air purification effect is affected by the untimely replacement of the filter element, thereby further extending the service life of the air filter and improving the overall filtration effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the medical air purifier of the present invention;

[0018] Figure 2 This is a schematic diagram of the internal structure of the medical air purifier of the present invention;

[0019] Figure 3 This is a schematic diagram of the air filter structure in the medical air purifier of the present invention;

[0020] Figure 4 This is a schematic diagram of the internal structure of the air filter in the medical air purifier of the present invention when the filter element is not filled;

[0021] Figure 5 This is a schematic diagram of the internal structure of the air filter when filling the filter element in the medical air purifier of the present invention;

[0022] Figure 6 This is a schematic diagram illustrating the principle of the medical air purifier of the present invention.

[0023] In the attached diagrams: 1. Outer shell; 2. Particle counter; 3. Air filter; 31. Shell; 32. Air inlet; 33. Air outlet; 34. Spindle; 35. Spiral guide plate; 36. Rotating cavity; 37. Filter element; 38. Fan; 41. First solenoid valve; 42. Second solenoid valve; 5. Control module; 6. Steering wheel; 7. Support beam; 8. Display screen; 9. Light alarm. Detailed Implementation

[0024] In the description of this patent, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this patent based on the specific circumstances.

[0025] Example 1: A medical air purifier includes a housing 1 and an air filter 3 disposed within the housing 1. The air filter 3 includes a housing 31, an air inlet 32, an air outlet 33, and a spindle 34 vertically disposed at the center of the housing 31. A spiral guide plate 35 is provided between the housing 31 and the spindle 34, which is spirally disposed along the axial direction of the spindle 34. The inner end of the spiral guide plate 35 is connected to the outer wall of the spindle 34, and the outer end is connected to the housing 31, thereby forming a rotating cavity 36 surrounded by the housing 31, the spiral guide plate 35, and the spindle 34.

[0026] The rotating cavity 36 is filled with a filter element 37. The air inlet 32 ​​is located on the upper part of the housing 31 and communicates with the upper end of the rotating cavity 36. The air outlet 33 located at the bottom of the housing 31 communicates with the lower end of the rotating cavity 36. A fan 38 is provided below the rotating cavity 36. The spiral guide plate 35 rotates along the direction of the spindle 34 with a gradually increasing pitch, thereby making the thickness of the filter element 37 gradually increase in the spiral direction of the rotating cavity 36.

[0027] The housing 1 also houses a particle counter 2 and a control module 5. The particle counter 2 is connected to the area near the air inlet 32 ​​of the air filter 3 via a pipe equipped with a first solenoid valve 41. The air outlet 33 of the air filter 3 is connected to the air inlet of a second solenoid valve 42. The two outlets of the second solenoid valve 42 are correspondingly connected to the particle counter 2 and the air outlet holes on the housing 1. The control module 5 generates a first valve on / off signal and a second valve switching signal according to a set period, controlling the opening and closing of the first solenoid valve 41 and controlling the second solenoid valve 42 to open the gas passage between the air outlet 33 of the air filter 3 and the air outlet holes on the housing 1 or the gas passage between the air filter 3 and the particle counter 2.

[0028] The aforementioned housing 1 is equipped with a light alarm 9 connected to the control module 5. The control module 5 compares the particle content values ​​in the gas before and after purification from the particle counter 2. When the difference in particle content in the gas before and after purification is lower than a set threshold, an alarm signal is generated to drive the light alarm 9 to light up.

[0029] The upper part of the outer casing 1 has an air inlet hole that matches the air inlet 32 ​​on the casing 31, and the bottom of the outer casing 1 has an air outlet hole that matches the air outlet 33 of the particle counter 2 and the air filter 3.

[0030] Example 2: A medical air purifier includes a housing 1 and an air filter 3 disposed within the housing 1. The air filter 3 includes a housing 31, an air inlet 32, an air outlet 33, and a spindle 34 vertically disposed at the center of the housing 31. A spiral guide plate 35 is provided between the housing 31 and the spindle 34, which is spirally disposed along the axial direction of the spindle 34. The inner end of the spiral guide plate 35 is connected to the outer wall of the spindle 34, and the outer end is connected to the housing 31, thereby forming a rotating cavity 36 surrounded by the housing 31, the spiral guide plate 35, and the spindle 34.

[0031] The rotating cavity 36 is filled with a filter element 37. The air inlet 32 ​​is located on the upper part of the housing 31 and communicates with the upper end of the rotating cavity 36. The air outlet 33 located at the bottom of the housing 31 communicates with the lower end of the rotating cavity 36. A fan 38 is provided below the rotating cavity 36. The spiral guide plate 35 rotates along the direction of the spindle 34 with a gradually increasing pitch, thereby making the thickness of the filter element 37 gradually increase in the spiral direction of the rotating cavity 36.

[0032] The housing 1 also houses a particle counter 2 and a control module 5. The particle counter 2 is connected to the area near the air inlet 32 ​​of the air filter 3 via a pipe equipped with a first solenoid valve 41. The air outlet 33 of the air filter 3 is connected to the air inlet of a second solenoid valve 42. The two outlets of the second solenoid valve 42 are correspondingly connected to the particle counter 2 and the air outlet holes on the housing 1. The control module 5 generates a first valve on / off signal and a second valve switching signal according to a set period, controlling the opening and closing of the first solenoid valve 41 and controlling the second solenoid valve 42 to open the gas passage between the air outlet 33 of the air filter 3 and the air outlet holes on the housing 1 or the gas passage between the air filter 3 and the particle counter 2.

[0033] The aforementioned housing 1 is equipped with a display screen 8 connected to a particle counter 2, which is used to display the particle content data in the gas before and after purification measured by the particle counter 2; at least three steering wheels 6 are installed on the lower surface of the aforementioned housing 1; the aforementioned steering wheels 6 are installed on the housing 1 through a support beam 7; the aforementioned air inlet 32 ​​is located on the side surface of the upper part of the housing 31.

[0034] When using the above-mentioned medical air purifier, the working principle is as follows: Place the device in the medical area, close the first solenoid valve, and simultaneously control the second solenoid valve to close the gas passage between the air outlet 33 of the air filter 3 and the particle counter 2, and open the gas passage between the air outlet 33 of the air filter 3 and the air outlet hole on the outer shell 1. The air in the area is purified by the air filter. After a period of time, close the first solenoid valve, and use the particle counter to detect the air near the air inlet 32 ​​of the air filter 3. Then close the first solenoid valve again, and simultaneously control the second solenoid valve to open the gas passage between the air outlet 33 of the air filter 3 and the particle counter 2, and close the gas passage between the air outlet 33 of the air filter 3 and the air outlet hole on the outer shell 1. The air quality after being filtered by the air filter 3 is detected by the particle counter. Finally, by comparing the air quality data before and after filtration by the air filter, it is determined whether the filter element needs to be replaced.

[0035] During the process of purifying gas using an air filter, the filtration path can be extended and the filtration effect improved within a small volume. At the same time, the pitch of the spiral guide plate gradually increases along the spindle direction, which makes the thickness of the filter element gradually increase in the spiral direction of the rotating cavity. This improves the problem of the overall filtration performance decline caused by the large difference in filtration performance decay in different areas of the filter element after prolonged use. It also increases the negative pressure intensity at the end of the filter element away from the fan and improves the uniformity of negative pressure inside the filter element. This helps to reduce the difference in filtration performance in different areas of the filter element over time, thereby extending the service life of the air filter and improving the overall filtration effect.

[0036] In addition, by regularly testing the air quality before and after air filtration, the exact time for filter replacement can be determined, thus avoiding waste caused by frequent filter replacement and the impact on air purification effect due to untimely filter replacement. This further extends the service life of the air filter and improves the overall filtration effect.

[0037] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A medical air purifier, comprising a housing (1) and an air filter (3) disposed within the housing (1), characterized in that: The air filter (3) includes a housing (31), an air inlet (32), an air outlet (33), and a spindle (34) vertically disposed at the center of the housing (31). A spiral guide plate (35) is provided between the housing (31) and the spindle (34) along the axial direction of the spindle (34). The inner end of the spiral guide plate (35) is connected to the outer wall of the spindle (34), and the outer end is connected to the housing (31), thereby forming a rotating cavity (36) surrounded by the housing (31), the spiral guide plate (35), and the spindle (34). The rotating cavity (36) is filled with a filter element (37). The air inlet (32) is located on the upper part of the housing (31) and communicates with the upper end of the rotating cavity (36). The air outlet (33) located at the bottom of the housing (31) communicates with the lower end of the rotating cavity (36). A fan (38) is provided below the rotating cavity (36). The spiral guide plate (35) rotates along the direction of the spindle (34) with the pitch gradually increasing, thereby making the thickness of the filter element (37) gradually increase in the spiral direction of the rotating cavity (36). The housing (1) is also equipped with a particle counter (2) and a control module (5). The particle counter (2) is connected to the area near the air inlet (32) of the air filter (3) through a pipe with a first solenoid valve (41). The air outlet (33) of the air filter (3) is connected to the air inlet of a second solenoid valve (42). The two air outlets of the second solenoid valve (42) are connected to the air outlet holes on the particle counter (2) and the housing (1) respectively. The control module (5) generates a first valve on / off signal and a second valve switching signal according to a set period, controls the opening and closing of the first solenoid valve (41) and controls the second solenoid valve (42) to open the gas passage between the air outlet (33) of the air filter (3) and the air outlet hole on the housing (1) or the gas passage between the air filter (3) and the particle counter (2).

2. The medical air purifier according to claim 1, characterized in that: The outer casing (1) is equipped with a display screen (8) connected to a particle counter (2) for displaying particle content data in the gas before and after purification as measured by the particle counter (2).

3. The medical air purifier according to claim 1, characterized in that: The housing (1) is equipped with a light alarm (9) connected to the control module (5). The control module (5) compares the particle content values ​​in the gas before and after purification from the particle counter (2). When the difference in particle content in the gas before and after purification is lower than the set threshold, an alarm signal is generated to drive the light alarm (9) to light up.

4. The medical air purifier according to claim 1, characterized in that: The upper part of the outer shell (1) has an air inlet hole that matches the air inlet (32) on the shell (31), and the bottom of the outer shell (1) has an air outlet hole that matches the air outlet (33) of the particle counter (2) and the air filter (3).

5. The medical air purifier according to claim 1, characterized in that: At least three steering wheels (6) are mounted on the lower surface of the housing (1).

6. The medical air purifier according to claim 5, characterized in that: The steering wheel (6) is mounted on the outer shell (1) via a support beam (7).

7. The medical air purifier according to claim 1, characterized in that: The air inlet (32) is located on the side surface of the upper part of the housing (31).

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