Differential pressure regulation and control door for isolation cabin and isolation cabin with differential pressure regulation and control door

Abstract

The utility model relates to the technical field of medical isolation cabins, in particular to a differential pressure regulation and control door for an isolation cabin and the isolation cabin. Comprising a door body and further comprises an exhaust fan, a ventilation pipeline and an efficient filter element. The exhaust fan and the efficient filter element are installed on the two sides, namely the high-pressure side and the low-pressure side, of the door body respectively. An exhaust outlet of the exhaust fan is communicated with an air inlet of the efficient filter element through the ventilation pipeline; air supply pipelines do not need to be arranged in the ward area, the buffer area and the rest area, air can be supplied only by arranging the air supply pipelines in the rest area, air is supplied to the buffer area and the ward area sequentially through the at least two pressure difference control doors, and the construction complexity and maintenance cost of the system are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical isolation cabins, in particular to a pressure difference control door for an isolation cabin and the isolation cabin. Background Art

[0002] Isolation cabins are mainly used for the isolation, treatment or transfer of infectious patients. To protect the safety of medical staff, they are usually divided into ward areas, buffer areas and rest areas. Each area is isolated by an airtight door. By controlling the pressure difference between each area and the direction of airflow, the risk of harmful gases infecting medical staff is reduced.

[0003] Currently, the commonly used isolation cabin pressure control measures are: air supply ducts are arranged in each functional area, valves are installed on the ducts to control the air supply volume, and exhaust modules are installed in each functional area. The exhaust modules control the exhaust volume by controlling the fan speed or the size of the valve opening. By controlling the supply and exhaust air volumes, the pressure difference and ventilation frequency of each functional area in the cabin can be controlled.

[0004] The isolation cabin in the existing technology has the following technical defects: each functional area needs to be equipped with air supply and exhaust modules, which requires a large amount of construction and cost; the air supply ducts in each functional area are usually installed inside or outside the ceiling for packaging, which makes maintenance difficult; each functional area uses fresh air for air supply and exhausts the air to the outside separately, resulting in a large amount of fresh air in the cabin and a short flow path in the cabin, which requires a large cooling and heating power of the HVAC system. Utility Model Content

[0005] The purpose of the utility model is to provide a pressure differential control door for an isolation cabin and an isolation cabin thereof. After the pressure differential control door is installed, there is no need to set up air supply ducts in the ward area, buffer area and rest area. Air supply ducts can be laid only to the rest area to supply air. At least two pressure differential control doors supply air to the buffer area and ward area respectively in turn, thereby reducing the complexity of system construction and maintenance costs.

[0006] To solve the above technical problems, the present invention provides a pressure differential control door for an isolation cabin, comprising a door body, an exhaust fan, a ventilation duct, and a high-efficiency filter element; the exhaust fan and the high-efficiency filter element are respectively installed on both sides of the door body, i.e., the high-pressure side and the low-pressure side; the exhaust port of the exhaust fan is connected to the air inlet of the high-efficiency filter element through the ventilation duct;

[0007] The high-efficiency filter element and the exhaust fan are arranged on the door body from top to bottom, and the casing of the exhaust fan also includes a pressure measuring head installed.

[0008] Preferably, the ventilation duct is a built-in structure and is built into the door body along an up and down path.

[0009] Preferably, the high-efficiency filter element is a detachable structure, and the high-efficiency filter element is detachably mounted on the upper end of the door body through a filter element pressing plate.

[0010] Preferably, the door body also includes an electronic lock and a handle.

[0011] Preferably, the door body also includes a visual window.

[0012] Preferably, the exhaust fan also includes a display screen, a switch, an audible and visual alarm, and an electrical connector.

[0013] Preferably, the door body is an airtight door structure.

[0014] The utility model also provides an isolation cabin, which adopts a pressure differential control door for the isolation cabin as described above, including a ward area, a buffer area and a rest area divided in sequence; and the areas are isolated by the pressure differential control door.

[0015] Preferably, an air supply duct is arranged on the top of the rest area, and air is supplied to the rest area from the upper side through the air supply port of the air supply duct. An exhaust duct is arranged on the bottom of the bulkheads on both sides of the ward area, and air is exhausted to the outside from the lower side through the air exhaust port of the exhaust duct.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] After the pressure differential control door of the utility model is installed, there is no need to set up air supply ducts in the ward area, buffer area and rest area. Air can be supplied only to the rest area, and at least two pressure differential control doors are used to supply air to the buffer area and ward area respectively, reducing the complexity of system construction and maintenance costs; the pressure differential control door directly discharges the air flow from the high-pressure side to the low-pressure side, ensuring the pressure difference between adjacent areas, and preventing the problems of difficult adjustment of air volume distribution and mutual influence of air supply due to unified air supply in multiple areas; the pressure differential control door exhaust fan exhausts air from the bottom side, and the air supply port supplies air from the top side, meeting the "upper supply and lower exhaust" design principle of the isolation cabin fresh air system; the fresh air flow path in the cabin is extended, and the heat exchange efficiency is increased. For cooling and heating conditions, especially in extreme temperature environments, it can significantly reduce energy consumption loss caused by heat exchange with air outside the cabin. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of a pressure differential control door for an isolation cabin of the present invention; (a) is a front view; (b) is a side view; and (c) is a rear view.

[0019] Figure 2 It is a structural diagram of the exhaust fan of the present utility model.

[0020] Figure 3 It is a structural diagram of an isolation cabin equipped with a pressure differential control door according to the present invention.

[0021] Figure 4 The utility model is a work flow chart of a pressure difference control door for an isolation cabin.

[0022] In the figure: 1-door, 2-exhaust fan, 21-display screen, 22-switch, 23-sound and light alarm, 24-electrical connector, 3-ventilation duct, 4-high-efficiency filter element, 41-filter element pressure plate, 5-pressure measuring head, 6-electronic lock, 7-handle, 8-visual window, 9-ward area, 10-buffer zone, 11-rest area. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are greatly simplified and not to exact scale, and are intended solely to facilitate and clearly illustrate the embodiments of the present invention.

[0024] like Figures 1 to 4 As shown, the embodiment of the present invention provides a pressure differential control door for an isolation cabin, comprising a door body 1, an exhaust fan 2, a ventilation duct 3, and a high-efficiency filter element 4; the exhaust fan 2 and the high-efficiency filter element 4 are respectively installed on both sides of the door body 1, namely the high-pressure side and the low-pressure side; the exhaust port of the exhaust fan 2 is connected to the air inlet of the high-efficiency filter element 4 through the ventilation duct 3;

[0025] The high-efficiency filter element 4 and the exhaust fan 2 are arranged on the door body 1 from top to bottom, and the housing of the exhaust fan 2 also includes a pressure gauge 5. The high-efficiency filter element 4 is installed on the low-pressure side, and the air flow flows from the high-pressure side to the low-pressure side, so the high-pressure side is the protected side. The air supply duct arranged in the rest area 11 is fed into the air supply duct through the air supply port. The high-pressure side gas in the rest area 11 enters the exhaust fan 2 through the air inlet, enters the ventilation duct 3 built into the door body 1 through the exhaust port, and enters the top of the door body 1 along the ventilation duct 3. After being filtered by the high-efficiency filter element 4, it enters the low-pressure side on the other side of the door body 1. Pressure gauge 5 detects the pressure on the high-pressure side of door body 1 and calculates the pressure differential with the outside air. When the pressure differential detected by pressure gauge 5 is less than the lower limit of the calibrated pressure differential, exhaust fan 2's speed and exhaust volume increase. When the pressure differential detected by pressure gauge 5 is greater than the upper limit of the calibrated pressure differential, exhaust fan 2's speed and exhaust volume decrease. When the pressure differential detected by pressure gauge 5 falls within the calibrated pressure differential range, exhaust fan 2's speed and exhaust volume remain unchanged. Exhaust fan 2 only controls the exhaust volume on the high-pressure side and regulates the pressure on this side. The low-pressure side pressure is regulated by a subsequent control door or other device.

[0026] The ventilation duct 3 is a built-in structure and is built into the door body 1 along an up-down path.

[0027] The high-efficiency filter element 4 is a detachable structure, and the high-efficiency filter element 4 is detachably mounted on the upper end of the door body 1 through the filter element pressing plate 41. Since the high-efficiency filter element 4 is a consumable material, the filter element pressing plate 41 can be removed to replace the filter element.

[0028] The door body 1 also includes an electronic lock 6 and a handle 7. The electronic lock 6 is used to lock the door body 1. At the same time, in order to prevent the ward area 9 from being directly connected to the rest area 11, interlocking between different door bodies 1 can be achieved. The electronic lock 6 can detect the closed state of the door body 1. When the door body 1 is in the open state, it indicates that the spaces on both sides of the door body 1 are connected. At this time, the exhaust fan 2 is not started for pressure adjustment.

[0029] The door body 1 further includes a viewing window 8 through which both sides of the door body 1 can be observed.

[0030] The exhaust fan 2 also includes a display screen 21, a switch 22, an audible and visual alarm 23, and an electrical connector 24. The display screen 21 displays the exhaust fan 2's operating status, such as speed, air volume, and pressure differential. The switch 22 is used to start and stop the device. The audible and visual alarm is used to warn of equipment anomalies. The electrical connector 24 is used to power the device and transmit data.

[0031] The door body 1 is an airtight door structure.

[0032] The present invention also provides an isolation cabin, which adopts a pressure differential control door for the isolation cabin as described above, including a ward area 9, a buffer area 10 and a rest area 11 divided in sequence; and each area is isolated by the pressure differential control door.

[0033] An air supply duct is arranged on the top of the rest area 11, and air is supplied to the rest area 11 from the upper side through the air supply port of the air supply duct. An exhaust duct is arranged on the bottom of the bulkheads on both sides of the ward area 9, and air is exhausted to the outside from the lower side through the exhaust port of the exhaust duct.

[0034] After the pressure differential control door of the utility model is installed, there is no need to set up air supply ducts in the ward area 9, the buffer zone 10, and the rest area 11. Air can be supplied only to the rest area 11, and air is supplied to the buffer zone 10 and the ward area 9 in turn by at least two pressure differential control doors, reducing the complexity of system construction and maintenance costs; the pressure differential control door directly discharges the airflow from the high-pressure side to the low-pressure side, ensuring the pressure difference between adjacent areas, and preventing the problems of difficult adjustment of air volume distribution and mutual influence of air supply due to unified air supply in multiple areas; the pressure differential control door exhaust fan 2 exhausts air from the bottom side, and the air supply port supplies air from the top side, meeting the "upper supply and lower exhaust" design principle of the isolation cabin fresh air system; extending the fresh air flow path in the cabin, increasing the heat exchange efficiency, and for cooling and heating conditions, especially in extreme temperature environments, it can significantly reduce energy consumption loss caused by heat exchange with the air outside the cabin.

[0035] The above description is only a description of the preferred embodiment of the present invention and does not limit the scope of the present invention. Any changes and modifications made by ordinary technicians in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A pressure differential control door for an isolation cabin, comprising a door body (1), characterized in that: Also includes: An exhaust fan (2), a ventilation duct (3) and a high-efficiency filter element (4); the exhaust fan (2) and the high-efficiency filter element (4) are respectively installed on both sides of the door body (1), namely the high-pressure side and the low-pressure side; the exhaust port of the exhaust fan (2) and the air inlet of the high-efficiency filter element (4) are connected through the ventilation duct (3); The high-efficiency filter element (4) and the exhaust fan (2) are arranged on the door body (1) from top to bottom, and the casing of the exhaust fan (2) also includes a pressure measuring head (5) installed.

2. A pressure differential control door for an isolation cabin according to claim 1, characterized in that: The ventilation duct (3) is a built-in structure and is built into the door body (1) along an up-down path.

3. The pressure differential control door for an isolation cabin according to claim 1, characterized in that: The high-efficiency filter element (4) is a detachable structure, and the high-efficiency filter element (4) is detachably mounted on the upper end of the door body (1) via a filter element pressing plate (41).

4. The pressure differential control door for an isolation cabin according to claim 1, characterized in that: The door body (1) also includes an electronic lock (6) and a handle (7).

5. The pressure differential control door for an isolation cabin according to claim 1, characterized in that: The door body (1) also includes a visual window (8).

6. The pressure differential control door for an isolation cabin according to claim 1, characterized in that: The exhaust fan (2) also includes a display screen (21), a switch (22), an audible and visual alarm (23) and an electrical connector (24).

7. The pressure differential control door for an isolation cabin according to claim 1, characterized in that: The door body (1) is an airtight door structure.

8. An isolation cabin, using the pressure differential control door for an isolation cabin according to any one of claims 1 to 7, characterized in that: It includes a ward area (9), a buffer area (10) and a rest area (11) which are divided in sequence; and each area is isolated by a pressure difference control door.

9. An isolation cabin according to claim 8, characterized in that: An air supply duct is arranged on the top of the rest area (11), and air is supplied to the rest area (11) from the upper side through the air supply port of the air supply duct. An exhaust duct is arranged on the bottom of the bulkheads on both sides of the ward area (9), and air is exhausted to the outside from the lower side through the exhaust port of the exhaust duct.

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