Air conditioning system for negative pressure isolation ward and negative pressure isolation ward

Abstract

The utility model provides an air conditioning system for a negative pressure isolation ward, the negative pressure isolation ward comprises a treatment area for patient treatment, and a sickbed is placed in the treatment area; the air conditioning system comprises an air supply part which is installed at the position, close to the sickbed, of the top of the treatment area and is configured to blow fresh airflow to the upper side surface of the sickbed; the exhaust part is mounted at the lower part, close to the side wall of the sickbed, of the treatment area, and is configured to extract and discharge polluted airflow inside the treatment area to the outside; wherein fresh airflow conveyed by the air supply part is used for breathing of a patient and drives waste gas exhaled by the patient to be blown to the air exhaust part so as to form directional airflow, and the waste gas exhaled by the patient is directionally exhausted outdoors.

Description

Technical Field

[0001] At least one embodiment of the present utility model relates to the technical field of air supply systems for negative pressure isolation wards, and specifically relates to an air conditioning system for a negative pressure isolation ward and a negative pressure isolation ward. Background Art

[0002] For the treatment of some infectious diseases, negative pressure isolation wards are important infrastructure for treating patients and ensuring the safety of medical staff. For this reason, the design standards for negative pressure isolation wards stipulate that negative pressure isolation wards should adopt a ventilation mode with fresh air and a high air change rate. Usually, the air change rate needs to reach more than 12 times. This brings high energy consumption to hospitals, and many hospitals are overwhelmed by it.

[0003] Furthermore, the fresh air supply distance of the existing air conditioning systems in negative pressure isolation wards is short, and the air flow usually forms obvious vortex flow in the negative pressure isolation ward, resulting in local air retention and the locking of pathogens exhaled by patients. When medical staff enter the negative pressure isolation ward, their health risks increase.

[0004] For this reason, the existing air conditioning systems in negative pressure isolation wards usually rely on increasing the air supply volume to reduce the content of pathogens attached to the air in the negative pressure isolation ward. However, only by increasing the air supply volume, the rapid removal of pathogens cannot be achieved. Even if the air supply volume is doubled, the removal efficiency of the pathogens attached to the air only increases by 15%. In this process, a large amount of energy will also be wasted. Summary of the Utility Model

[0005] In view of this, the present utility model provides an air conditioning system for a negative pressure isolation ward to direct the pathogens attached to the air to the outside.

[0006] According to an embodiment of the present utility model, there is provided an air conditioning system for a negative pressure isolation ward. The negative pressure isolation ward includes a treatment area for patient treatment, and a hospital bed is placed inside the treatment area. The air conditioning system includes: an air supply part, installed at the top of the treatment area near the hospital bed, configured to blow fresh air flow to the upper side surface of the hospital bed; and an exhaust part, installed at the lower part of the side wall of the treatment area near the hospital bed, configured to extract and discharge the polluted air flow inside the treatment area to the outside. Wherein, the fresh air flow conveyed by the air supply part is for the patient to breathe, and drives the waste gas exhaled by the patient, and blows it towards the exhaust part to form a directional air flow, and direct the waste gas exhaled by the patient to the outside.

[0007] According to an embodiment of the present utility model, the air supply part includes: two air supply members, respectively installed at the position near the foot of the hospital bed and at the position near one side of the hospital bed extending in the width direction.

[0008] According to an embodiment of the present utility model, each of the air supply members includes: a housing, which is configured as a substantially strip-shaped rectangular frame with an opening formed on one side, and extends along the length direction or the width direction of the hospital bed; a plurality of first adjusting plates, which are arranged in sequence along the length direction of the rectangular frame and are installed at a position close to the opening inside the housing, and each of the first adjusting plates can rotate around a pivot axis parallel to the width direction of the rectangular frame; and a plurality of second adjusting plates, which are arranged in sequence along the width direction of the rectangular frame and are installed at a position close to the opening inside the housing, and each of the second adjusting plates can rotate around a pivot axis parallel to the length direction of the rectangular frame.

[0009] According to an embodiment of the present utility model, the exhaust part includes: a housing, which is configured as a substantially rectangular frame with a notch formed on one side; a plurality of third adjusting plates, which are arranged in sequence, and each of the third adjusting plates is rotatably installed on one side of the housing close to the notch; and an air pump, which is installed on the inner wall of the housing facing the notch and is suitable for extracting the contaminated air flow inside the treatment area.

[0010] According to an embodiment of the present utility model, the exhaust part further includes a filter element, which is suitable for adsorbing pathogens attached to the contaminated air flow.

[0011] According to an embodiment of the present utility model, the air conditioning system further includes: a flow controller, which is installed at the entrance of the negative pressure isolation ward and is suitable for medical staff to adjust the air supply volume of the air supply part.

[0012] According to an embodiment of the present utility model, the flow controller includes: a flow valve, which is installed inside the air supply duct connected to the air supply part; and a control switch, which is installed at the entrance of the negative pressure isolation ward and is electrically connected to the flow valve, and controls the opening angle of the flow valve to control the air supply volume of the air supply part.

[0013] According to an embodiment of the present utility model, there is provided a negative pressure isolation ward, which includes: a treatment area, inside which a hospital bed is arranged and is suitable for patient treatment; and the air conditioning system for the negative pressure isolation ward described in the above embodiment, which is installed inside the treatment area.

[0014] According to an embodiment of the present utility model, the negative pressure isolation ward further includes: a buffer area, which is adjacent to and independently arranged with the treatment area and is suitable for medical staff to perform disinfection operations before entering the treatment area or before leaving the negative pressure isolation ward; and a transfer window, which is installed on the side wall of the buffer area far from the treatment area and is suitable for transferring items between the buffer area and the outside of the negative pressure isolation ward.

[0015] According to an embodiment of the present utility model, the negative pressure isolation ward further includes: a call device, which is installed on the side wall of the treatment area close to the head of the hospital bed and is suitable for a patient to call a medical staff member.

[0016] For the air conditioning system used in the negative pressure isolation ward according to the above embodiment of the present utility model, by installing the air supply part at a position close to the hospital bed at the top of the treatment area, it is suitable for blowing fresh air flow to the upper surface of the hospital bed. Further, the exhaust part is installed at the lower part of the side wall of the treatment area close to the hospital bed and is suitable for extracting and discharging the contaminated air flow inside the treatment area to the outside. The fresh air flow conveyed by the air supply part is for the patient to breathe and drives the waste gas exhaled by the patient, blowing towards the exhaust part to form a directional air flow. In other words, under the suction of the exhaust part, a directional air flow is formed that is blown out by the air supply part, flows through the patient's head, then blows towards the exhaust part, and is absorbed by the exhaust part. During this process, along with the air flow, the waste gas exhaled by the patient is discharged outdoors directionally, so as to discharge the pathogens attached to the air outdoors directionally, thereby ensuring that there are fewer pathogens attached to the air on the side opposite to the air flow direction, reducing the infection probability of the medical staff on that side, and ensuring the health and safety of the medical staff. Description of the Drawings

[0017] Figure 1 is a three-dimensional schematic diagram of the negative pressure isolation ward according to an embodiment of the present utility model;

[0018] Figure 2 is a top view of the negative pressure isolation ward according to an embodiment of the present utility model;

[0019] Figure 3 is a schematic diagram of the air flow direction of the air conditioning system used in the negative pressure isolation ward according to an embodiment of the present utility model;

[0020] Figure 4 is a top view of the air supply part of the air conditioning system used in the negative pressure isolation ward according to an embodiment of the present utility model;

[0021] Figure 5 is a front view of the exhaust part of the air conditioning system used in the negative pressure isolation ward according to an embodiment of the present utility model;

[0022] Figure 6 is an internal side view of the exhaust part of the air conditioning system used in the negative pressure isolation ward according to an embodiment of the present utility model; and

[0023] Figure 7 is a schematic diagram of the installation position of the flow controller of the air conditioning system used in the negative pressure isolation ward according to an embodiment of the present utility model.

[0024] In the figures:

[0025] 1 - Treatment area; 11 - Hospital bed; 12 - First door body; 13 - Bathroom; 14 - Second door body; 15 - Third door body;

[0026] 2 - Air - conditioning system;

[0027] 3 - Air - supply part;

[0028] 31 - Air - supply component;

[0029] 311 - Housing; 3111 - Opening;

[0030] 312 - First adjusting plate;

[0031] 313 - Second adjusting plate;

[0032] 4 - Exhaust part;

[0033] 41 - Outer shell; 411 - Notch;

[0034] 42 - Third adjusting plate;

[0035] 43 - Air pump;

[0036] 44 - Filter element;

[0037] 5 - Flow controller; 51 - Flow valve; 52 - Control switch; 53 - Air - supply air duct;

[0038] 6 - Buffer zone;

[0039] 7 - Transfer window;

[0040] 8 - Call device. Detailed implementation mode

[0041] To make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the following further elaborates on the present utility model in detail with reference to specific embodiments and the accompanying drawings.

[0042] According to the inventive concept of one aspect of the present utility model, an air - conditioning system for a negative - pressure isolation ward is provided. The negative - pressure isolation ward includes a treatment area for patient treatment, and a hospital bed is placed inside the treatment area. The air - conditioning system includes: an air - supply part, installed at the top of the treatment area near the hospital bed, configured to blow fresh air flow to the upper surface of the hospital bed; and an exhaust part, installed at the lower part of the side wall of the treatment area near the hospital bed, configured to extract and discharge the contaminated air flow inside the treatment area to the outside. Among them, the fresh air flow conveyed by the air - supply part is for the patient to breathe, and drives the waste gas exhaled by the patient, blowing towards the exhaust part to form a directional air flow, and discharging the waste gas exhaled by the patient to the outside directionally.

[0043] Figure 1 It is a three - dimensional schematic diagram of the negative - pressure isolation ward of the embodiment of the present utility model;Figure 2 is a top view of a negative pressure isolation ward according to an embodiment of the present utility model; Figure 3 is a schematic diagram of the air flow direction of an air conditioning system for a negative pressure isolation ward according to an embodiment of the present utility model.

[0044] According to an exemplary embodiment of the present utility model, please refer to Figures 1-3 , an air conditioning system for a negative pressure isolation ward is provided. The negative pressure isolation ward includes a treatment area 1 for patient treatment, and a hospital bed 11 is placed inside the treatment area 1. The air conditioning system 2 includes a air supply section 3 and an exhaust section 4. The air supply section 3 is installed at the top of the treatment area 1 near the hospital bed 11, and is configured to blow fresh air flow to the upper side surface of the hospital bed 11. The exhaust section 4 is installed at the lower part of the side wall of the treatment area 1 near the hospital bed 11, and is configured to extract and discharge the contaminated air flow inside the treatment area 1 to the outside. Among them, the fresh air flow conveyed by the air supply section 3 is for the patient to breathe, and drives the waste gas exhaled by the patient, and blows it towards the exhaust section 4 to form a directional air flow, and discharges the waste gas exhaled by the patient to the outside directionally.

[0045] In this embodiment, by installing the air supply section 3 at the top of the treatment area 1 near the hospital bed 11, it is suitable for blowing fresh air flow to the upper side surface of the hospital bed 11. Further, the exhaust section 4 is installed at the lower part of the side wall of the treatment area 1 near the hospital bed 11, which is suitable for extracting and discharging the contaminated air flow inside the treatment area 1 to the outside. The fresh air flow conveyed by the air supply section 3 is for the patient to breathe, and drives the waste gas exhaled by the patient, and blows it towards the exhaust section 4 to form a directional air flow. In other words, under the suction of the exhaust section 4, a directional air flow is formed that is blown out by the air supply section 3, flows through the patient's head, then blows towards the exhaust section 4, and is absorbed by the exhaust section 4. During this process, along with the air flow, the waste gas exhaled by the patient is discharged to the outside directionally, so as to discharge the pathogens attached to the air to the outside directionally, and build an air curtain between the patient and the medical staff, thereby ensuring that there are fewer pathogens attached to the air on the side opposite to the air flow, reducing the probability of infection of the medical staff on that side, and ensuring the health and safety of the medical staff.

[0046] In some exemplary embodiments, refer to Figures 1-2 , the air supply section 3 includes two air supply members 31, which are respectively installed at the position near the foot end 111 of the hospital bed 11 and on one side extending along the width direction of the hospital bed 11.

[0047] It should be noted that in this embodiment, the position where the medical staff is located and one of the air supply members 31 are respectively on both sides of the hospital bed 11 extending along the width direction, so as to build an air curtain between the patient and the medical staff. Thus, an air flow direction is formed that blows from the air supply member 31 to the upper side surface of the hospital bed 11 on the side far from the medical staff in the transverse direction, and drives the waste gas exhaled by the patient to blow towards the exhaust section 4, as shown in Figure 3In the direction indicated by arrow A, thereby ensuring that the location where the medical staff is located has fewer pathogens attached to the air, so as to ensure the health and safety of the medical staff.

[0048] Furthermore, the air supply member 31 is installed at a position close to the end 111 of the hospital bed 11, so as to avoid directly supplying air to the patient's head and ensure the comfort of the patient's breathing.

[0049] Figure 4 It is a top view of the air supply member of the air conditioning system for a negative pressure isolation ward according to an embodiment of the present invention.

[0050] In some exemplary embodiments, referring to Figures 1-4 , each air supply member 31 includes a housing 311, a plurality of first adjusting plates 312 and a plurality of second adjusting plates 313. The housing 311 is configured as a generally strip-shaped rectangular frame with an opening 3111 formed on one side, extending along the length direction or the width direction of the hospital bed 11. The plurality of first adjusting plates 312 are arranged in sequence along the length direction of the rectangular frame and are installed at a position close to the opening 3111 inside the housing 311, and each first adjusting plate 312 can rotate around a pivot axis parallel to the width direction of the rectangular frame. The plurality of second adjusting plates 313 are arranged in sequence along the width direction of the rectangular frame and are installed at a position close to the opening 3111 inside the housing 311, and each second adjusting plate 313 can rotate around a pivot axis parallel to the length direction of the rectangular frame.

[0051] In this embodiment, by changing the angles of the first adjusting plate 312 and the second adjusting plate 313, the air supply direction of the air supply part 3 is changed, so that the air supply direction of the air supply part 3 faces the position where the exhaust part 4 is located, so that the fresh air flow conveyed by the air supply part 3 flows to the upper surface of the hospital bed 11 for the patient to breathe, and drives the waste gas exhaled by the patient to flow towards the exhaust part 4.

[0052] Furthermore, in this embodiment, the housing 311 is configured as a generally strip-shaped rectangular frame with an opening 3111 formed on one side, so as to increase the air supply distance of the air supply member 31, so that the fresh air flow output by the air supply member 31 can flow to the upper surface of the hospital bed 11. It overcomes the technical defect that the air supply distance of the existing air conditioning system for negative pressure isolation wards is short, and the air flow usually forms obvious vortex flow in the negative pressure isolation ward, resulting in local air retention and the locking of pathogens exhaled by patients.

[0053] Figure 5 It is a front view of the exhaust part of the air conditioning system for a negative pressure isolation ward according to an embodiment of the present invention; Figure 6 It is an internal side view of the exhaust part of the air conditioning system for a negative pressure isolation ward according to an embodiment of the present invention.

[0054] In some exemplary embodiments, referring to Figures 1-3and Figures 5-6 The exhaust section 4 includes a housing 41, a plurality of third adjusting plates 42, and an air pump 43. The housing 41 is configured as a substantially rectangular frame with a notch 411 formed on one side. The plurality of third adjusting plates 42 are arranged in sequence, and each third adjusting plate 42 is rotatably mounted on one side of the housing 41 close to the notch 411. The air pump 43 is mounted on the inner wall of the housing 41 facing the notch 411 and is adapted to extract the contaminated air flow inside the treatment area 1.

[0055] In this embodiment, by adjusting the angle of the third adjusting plate 42, the angle at which the exhaust section 4 absorbs the waste gas is changed.

[0056] In some exemplary embodiments, referring to Figure 6 the exhaust section 4 further includes a filter element 44, which is adapted to adsorb the pathogens attached to the contaminated air flow and prevent the pathogens attached to the air flow from leaking to the outside and causing harm to the atmospheric environment.

[0057] Figure 7 is a schematic diagram of the installation position of the flow controller of the air conditioning system for a negative pressure isolation ward according to an embodiment of the present invention.

[0058] In some exemplary embodiments, referring to Figure 3 and Figure 7 the air conditioning system 2 further includes a flow controller 5. The flow controller 5 is installed at the entrance of the negative pressure isolation ward and is adapted for medical staff to adjust the air supply volume of the air supply section 3.

[0059] In some exemplary embodiments, referring to Figure 3 and Figure 7 the flow controller 5 includes a flow valve 51 and a control switch 52. The flow valve 51 is installed inside the air supply duct 53 connected to the air supply section 3. The control switch 52 is installed at the entrance of the negative pressure isolation ward and is electrically connected to the flow valve 51. By controlling the opening angle of the flow valve 51, the air supply volume of the air supply section 3 is controlled.

[0060] In this embodiment, the air supply speed range of the air supply section 3 is controlled within 1 m / s. When medical staff enter the negative pressure isolation ward, the air supply volume can be increased, and the air supply speed of the air supply section 3 can be set to 1 m / s to quickly remove the pathogens attached to the air inside the negative pressure isolation ward and ensure the health and safety of medical staff. When medical staff leave the negative pressure isolation ward, the air supply volume can be reduced, and the reduced air supply volume still meets the design standard for the air supply volume of the negative pressure isolation ward. The air supply speed of the air supply section 3 can be set to 0.6 - 0.8 m / s to supply the minimum air supply volume required by the specification, which can save energy on the one hand and ensure the comfort of patients on the other hand.

[0061] Furthermore, compared with the existing air conditioning systems for negative pressure isolation wards, the air conditioning system for negative pressure isolation wards in this embodiment has the following advantages:

[0062] Compared with the air supply mode with a short fresh air supply distance of the existing air conditioning systems for negative pressure isolation wards, the air conditioning system for negative pressure isolation wards in this embodiment adopts an upper supply and lower return air supply mode, forming an air curtain between patients, with a directional flow formed in the patient's breathing area, enabling the aerosols exhaled by the patient to be targeted and discharged, reducing the content of pathogens attached to the air at the location of medical staff, and reducing cross-infection between patients and medical staff, thereby improving the safety of the air inside the negative pressure isolation ward. At the same time, the air conditioning system for negative pressure isolation wards in this embodiment has higher targeted sewage discharge performance, and can still meet the technical requirements of reducing the infection of medical staff by making the content of pathogens attached to the air inside the negative pressure isolation ward meet the requirements under a lower air supply volume, so as to reduce the fresh air treatment energy consumption of the air conditioning system.

[0063] Furthermore, the air conditioning system for negative pressure isolation wards in this embodiment realizes a faster removal of the pathogens exhaled by patients. While ensuring the safety of medical staff and the comfort of patients, it realizes energy conservation and consumption reduction in the negative pressure isolation ward. The air conditioning system in this embodiment forms a directional flow of air in the patient's breathing area, realizes the targeted removal of the pathogens exhaled by patients, and increases the reliability of protecting the health and safety of medical staff.

[0064] According to an exemplary embodiment of the present utility model, please refer to Figures 1-3 , a negative pressure isolation ward is provided, including a treatment area 1 and the air conditioning system 2 for negative pressure isolation wards described in the above embodiment. A hospital bed 11 is arranged inside the treatment area 1, which is suitable for patient treatment. The air conditioning system 2 for negative pressure isolation wards described in the above embodiment is installed inside the treatment area 1.

[0065] Through the above setting method, in the negative pressure isolation ward of this embodiment, under the suction of the exhaust part 4, a directional air flow is formed that is blown out by the air supply part 3, flows through the patient's head, then blows towards the exhaust part 4, and is absorbed by the exhaust part 4. During this process, along with the air flow, the waste gas exhaled by the patient is directed to be discharged outdoors, so as to direct the pathogens attached to the air outdoors, building an air curtain between the patient and the medical staff, thereby ensuring that there are fewer pathogens attached to the air on the side opposite to the air flow, reducing the probability of infection of the medical staff on that side, and ensuring the health and safety of the medical staff.

[0066] In some exemplary embodiments, refer to Figure 1, the negative pressure isolation ward further includes a buffer area 6 and a transfer window 7. The buffer area 6 is adjacent to and independently arranged from the treatment area 1, and is suitable for medical staff to perform disinfection operations before entering the treatment area 1 or before leaving the negative pressure isolation ward. The transfer window 7 is installed on the side wall of the buffer area 6 away from the treatment area 1, and is suitable for transferring items between the buffer area 6 and the outside of the negative pressure isolation ward, reducing the probability of pathogens attached to the air inside the negative pressure isolation ward leaking to the outside of the negative pressure isolation ward, and avoiding harm to the air environment outside the negative pressure isolation ward.

[0067] In some exemplary embodiments, referring to Figure 1 , the negative pressure isolation ward further includes a call device 8. The call device 8 is installed on the side wall of the treatment area 1 near the head of the hospital bed 11, and is suitable for patients to call medical staff.

[0068] It should be noted that the negative pressure isolation ward of this embodiment is usually applied to a single - room negative pressure isolation ward.

[0069] Furthermore, a first door body 12 for isolating the buffer area 6 from the treatment area 1 is also provided between the buffer area 6 and the treatment area 1. The negative pressure isolation ward of this embodiment is also provided with a toilet 13, and a second door body 14 for isolating the toilet 13 from the treatment area 1 is also provided at the entrance of the toilet 13. A third door body 15 for isolating from the outside is also provided at the exit of the treatment area 1.

[0070] The specific embodiments described above have further elaborated on the purpose, technical solutions, and beneficial effects of the present utility model. It should be understood that the above - mentioned are only specific embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An air conditioning system for a negative pressure isolation ward, characterized in that: The negative pressure isolation ward comprises a treatment area (1) for treating patients, wherein a bed (11) is placed inside the treatment area (1); the air conditioning system (2) comprises: an air supply unit (3), installed at the top of the treatment area (1) near the bed (11), and configured to blow fresh air to the upper surface of the bed (11); and An exhaust unit (4) is installed at the lower part of the side wall of the treatment area (1) close to the bed (11), and is configured to extract and discharge polluted airflow inside the treatment area (1) to the outside; The fresh air flow delivered by the air supply part (3) is provided for the patient to breathe, and drives the waste air exhaled by the patient to blow toward the exhaust part (4) to form a directional air flow, and exhausts the waste air exhaled by the patient to the outside in a directional manner.

2. The air conditioning system for negative pressure isolation wards according to claim 1, characterized in that: The air supply unit (3) comprises: The two air supply members (31) are respectively installed at a position close to the foot of the bed (111) of the hospital bed (11) and close to a side of the hospital bed (11) extending in the width direction.

3. The air conditioning system for negative pressure isolation wards according to claim 2, characterized in that: Each of the air supply members (31) comprises: The shell (311) is constructed as a substantially strip-shaped rectangular frame with an opening (3111) formed on one side, and extends along the length direction or the width direction of the hospital bed (11); a plurality of first adjustment plates (312), arranged in sequence along the length direction of the rectangular frame, and installed in a position close to the opening (3111) inside the housing (311), each of the first adjustment plates (312) being rotatable about a pivot parallel to the width direction of the rectangular frame; and A plurality of second adjustment plates (313) are arranged in sequence along the width direction of the rectangular frame and are installed inside the shell (311) at a position close to the opening (3111); each of the second adjustment plates (313) can rotate around a pivot parallel to the length direction of the rectangular frame.

4. The air conditioning system for negative pressure isolation wards according to claim 1, characterized in that: The exhaust part (4) comprises: The housing (41) is constructed as a substantially rectangular frame with a notch (411) formed on one side; A plurality of third adjustment plates (42) are arranged in sequence, and each of the third adjustment plates (42) is rotatably mounted on a side of the housing (41) close to the notch (411); and An air pump (43) is mounted on the inner wall of the housing (41) facing the notch (411) and is suitable for extracting contaminated airflow inside the treatment area (1).

5. The air conditioning system for negative pressure isolation wards according to claim 4, characterized in that: The exhaust portion (4) also includes a filter element (44) suitable for absorbing pathogens attached to the contaminated airflow.

6. The air conditioning system for negative pressure isolation wards according to claim 1, characterized in that: The air conditioning system (2) further comprises: A flow controller (5) is installed at the entrance of the negative pressure isolation ward and is suitable for medical staff to adjust the air supply volume of the air supply unit (3).

7. The air conditioning system for negative pressure isolation wards according to claim 6, characterized in that: The flow controller (5) comprises: a flow valve (51) installed inside an air supply duct (53) connected to the air supply unit (3); and The control switch (52) is installed at the entrance of the negative pressure isolation ward and is electrically connected to the flow valve (51). The air supply volume of the air supply part (3) is controlled by controlling the opening angle of the flow valve (51).

8. A negative pressure isolation ward, characterized in that: include: A treatment area (1) is provided with a bed (11) and is suitable for treating patients; as well as The air conditioning system (2) for a negative pressure isolation ward described in any one of claims 1 to 7 is installed inside the treatment area (1).

9. The negative pressure isolation ward according to claim 8, characterized in that: The negative pressure isolation ward also includes: a buffer zone (6), adjacent to and independently of the treatment zone (1), suitable for medical staff to perform disinfection operations before entering the treatment zone (1) or before leaving the negative pressure isolation ward; and The transfer window (7) is installed on the side wall of the buffer zone (6) away from the treatment zone (1), and is suitable for transferring items between the buffer zone (6) and the outside of the negative pressure isolation ward.

10. The negative pressure isolation ward according to claim 8, characterized in that: The negative pressure isolation ward also includes: A calling device (8) is installed on the side wall of the treatment area (1) near the head of the bed (11), and is suitable for patients to call medical staff.

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