Hospital air conditioner control system
The hospital air conditioning control system, which features centralized monitoring and dynamic adjustment, solves the problems of parameter fluctuations and cumbersome manual operation caused by the independent operation of traditional air conditioning systems. It achieves rapid and accurate environmental parameter control, meeting the infection control needs of key areas in the hospital.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI HANYE TECH CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-05-08
AI Technical Summary
Traditional hospital air conditioning systems operate independently without coordination, resulting in large fluctuations in environmental parameters, delayed control, cumbersome manual operation, difficulty in ensuring the accuracy and stability of key parameters, high energy consumption, and difficulty in achieving rapid and accurate differential pressure control to meet infection control requirements.
It employs a display screen, air conditioner, exhaust fan, humidifier, temperature sensor, humidity sensor, differential pressure sensor, and control cabinet. Through unified coordination and management via control circuits, it achieves centralized monitoring and dynamic adjustment of key environmental parameters. It utilizes control chips and relays to control the start and stop of the air conditioner, humidifier, and exhaust fan.
It improves the accuracy and response speed of environmental parameter control, reduces the intensity of manual operation and the risk of error, enhances equipment operating efficiency and management level, and meets the stringent requirements of infection control.
Smart Images
Figure CN224215520U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air conditioning system technology, and in particular to a hospital air conditioning control system. Background Technology
[0002] Hospital environments, especially critical areas such as operating rooms, intensive care units (ICUs), sterile wards, laboratories, and pharmacies, have extremely strict and specific requirements for indoor air quality, temperature, humidity, and air pressure differences (pressure differentials) between different areas. Suitable temperature and humidity are fundamental to patient comfort and wound healing, and are also conditions for the stable operation of sophisticated medical equipment. Precise air pressure gradient control is a core means of preventing cross-infection; for example, operating rooms need to maintain positive pressure to prevent external contaminants from entering, while isolation wards need to maintain negative pressure to prevent pathogens from leaking out. Traditionally, hospitals often use decentralized and independent equipment to meet these needs: independent air conditioning units are responsible for temperature regulation, independent humidifiers or dehumidifiers control humidity, independent exhaust or fresh air systems regulate ventilation and pressure differentials, and various sensors are also installed separately. Operators need to monitor multiple dashboards and manually adjust the start / stop and parameter setpoints of multiple devices. This model has significant drawbacks: there is a lack of effective linkage between devices, environmental parameters fluctuate greatly and control is lagging; manual operation is cumbersome and prone to errors, making it difficult to guarantee the accuracy and stability of key parameters; independent operation of each system leads to high energy consumption; more importantly, for the crucial differential pressure control, the decentralized system cannot achieve rapid and accurate dynamic adjustment to meet the strict requirements of infection control. Utility Model Content
[0003] The purpose of this invention is to provide a hospital air conditioning control system to solve the problems existing in the prior art.
[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:
[0005] A hospital air conditioning control system includes a display screen, an air conditioner, an exhaust fan, a humidifier, a temperature sensor, a humidity sensor, a differential pressure sensor, and a control cabinet. The display screen is located at the center of the front end of the control cabinet. The display screen, air conditioner, and exhaust fan are electrically connected to the control cabinet. A control circuit is installed inside the control cabinet. The control circuit includes a power module, a control module, and a switch module. One end of the power module is connected to one end of the control module, the other end of the control module is connected to one end of the switch module, and the other end of the switch module is connected to the other end of the power module.
[0006] By adopting the above technical solution, the display screen, air conditioner, exhaust fan, humidifier, temperature sensor, humidity sensor, and differential pressure sensor are connected to the control circuit set in the control cabinet and managed in a unified manner by the control cabinet. This centralized monitoring of key environmental parameters such as temperature, humidity, and air pressure difference in critical areas of the hospital improves the accuracy, response speed, and stability of environmental parameter control, reduces the intensity of manual operation and the risk of error, and at the same time improves equipment operating efficiency and management level.
[0007] In a further embodiment, the power module includes a main power supply and a control power supply. The control power supply converts AC power to DC power. The input terminal of the display screen is connected to the DC output terminal of the control power supply, and the output terminal of the display screen is connected to the DC input terminal of the control power supply. The AC input terminal of the control power supply is connected to the live wire of the main power supply, and the AC output terminal of the control power supply is connected to the neutral wire of the main power supply.
[0008] In a further embodiment, the control module includes a control chip, a first intermediate relay, a second intermediate relay, and a third intermediate relay. The control chip has 15 ports, including a first common terminal, a temperature sensor input terminal, a temperature sensor output terminal, a humidity sensor input terminal, a humidity sensor output terminal, a differential pressure sensor input terminal, a differential pressure sensor output terminal, a power input terminal, a power output terminal, a ground terminal, a power supply terminal, a first signal output terminal, a second signal output terminal, a third signal output terminal, and a second common terminal. The first common terminal is connected to the DC input terminal of the control power supply and to the output terminal of the display screen. The temperature sensor input terminal is connected to the input terminal of the temperature sensor, the temperature sensor output terminal is connected to the output terminal of the temperature sensor, and the differential pressure sensor input terminal is connected to the input terminal of the differential pressure sensor. The output terminal of the device is connected to the output terminal of the differential pressure sensor; the input terminal of the humidity sensor is connected to the input terminal of the humidity sensor; the output terminal of the humidity sensor is connected to the output terminal of the humidity sensor; the power input terminal is connected to the live wire of the main power supply; the power output terminal is connected to the neutral wire of the main power supply; the grounding terminal is connected to the earth; the power supply terminal is connected to the live wire of the main power supply; the first signal output terminal is connected to one end of the first intermediate relay; the other end of the intermediate relay is connected to the neutral wire of the main power supply; the second signal output terminal is connected to one end of the second intermediate relay; the other end of the second intermediate relay is connected to the neutral wire of the main power supply; the third signal output terminal is connected to one end of the third intermediate relay; the other end of the third intermediate relay is connected to the neutral wire of the main power supply; and the other ends of the first, second, and third intermediate relays are interconnected.
[0009] In a further embodiment, the switch module includes a first switch, a second switch, and a third switch. The first, second, and third switches are sequentially linked with a first, second, and third intermediate relays. The first intermediate relay controls the closing of the first switch, the second intermediate relay controls the closing of the second switch, and the third intermediate relay controls the closing of the third switch. One end of the first switch is connected to the live wire of the main power supply, and the other end of the first switch is connected to one end of the air conditioner motor. The other end of the air conditioner motor is connected to the neutral wire of the main power supply. One end of the second switch is connected to the live wire of the main power supply, and the other end of the second switch is connected to one end of the humidifier. The other end of the humidifier is connected to the neutral wire of the main power supply. One end of the third switch is connected to the live wire of the main power supply, and the other end of the third switch is connected to one end of the exhaust fan motor. The other end of the exhaust fan motor is connected to the neutral wire of the main power supply. The first, second, and third switches are used to sequentially control the start and stop of the air conditioner, the exhaust fan, and the humidifier.
[0010] In a further embodiment, the bottom of the control cabinet is provided with multiple cushioning feet, and the interior of the control cabinet is provided with a heat dissipation device.
[0011] In a further embodiment, both the live wire and the neutral wire of the main power supply are equipped with an air switch and a start switch, and both the start switch and the air switch are mounted on the control cabinet via a fixed electrical connection plate.
[0012] By adopting the above technical solution, closing the air switch and the start switch energizes the control chip. Based on the values detected by the temperature sensor, humidity sensor, and differential pressure sensor, when the temperature sensor detects a temperature outside the set range, the control chip controls the first signal output terminal to output current, energizing the first intermediate relay and closing the first switch, thereby starting the air conditioner. When the temperature sensor detects that the temperature has reached the set temperature, the control chip shuts off the output of the first signal output terminal, de-energizing the first intermediate relay and opening the first switch, thereby turning off the air conditioner. When the humidity sensor detects a humidity outside the set range, the control chip controls the second signal output terminal to output current, energizing the second intermediate relay and closing the second switch, thus turning off the air conditioner. When the humidifier is activated, if the humidity sensor detects that the humidity has reached the set range, the control chip shuts off the output of the second signal terminal, and the second switch opens, thus turning off the humidifier. If the differential pressure sensor detects that the differential pressure is not within the set range, the control chip controls the output current of the third signal terminal, energizing the third intermediate relay and closing the third switch, thus starting the exhaust fan. If the differential pressure sensor detects that the differential pressure is within the set range, the control chip disconnects the output of the third signal terminal, and the third switch opens, thus turning off the exhaust fan. By controlling the air conditioner, humidifier, and exhaust fan in a coordinated manner, the control chip maintains the temperature, humidity, and differential pressure in the hospital within a suitable range, thereby achieving rapid and precise dynamic adjustment to meet the stringent requirements of infection control.
[0013] In summary, this utility model has the following beneficial effects:
[0014] 1. Closing the air switch and the start switch energizes the control chip. Based on the values detected by the temperature sensor, humidity sensor, and differential pressure sensor, when the temperature sensor detects a temperature outside the set range, the control chip controls the first signal output terminal to output current, energizing the first intermediate relay and closing the first switch, thus starting the air conditioner. When the temperature sensor detects that the temperature has reached the set range, the control chip shuts off the output of the first signal output terminal, de-energizing the first intermediate relay and opening the first switch, thus turning off the air conditioner. When the humidity sensor detects a humidity outside the set range, the control chip controls the second signal output terminal to output current, energizing the second intermediate relay and closing the second switch, thus starting the humidifier. When the humidity sensor detects that the humidity has reached the set range, the control chip shuts off the output of the second signal terminal, and the second switch opens, thereby turning off the humidifier. When the differential pressure sensor detects that the differential pressure is not within the set range, the control chip controls the output current of the third signal terminal, which energizes the third intermediate relay and closes the third switch, thereby starting the exhaust fan. When the differential pressure sensor detects that the differential pressure is within the set range, the control chip disconnects the output of the third signal terminal, and the third switch opens, thereby turning off the exhaust fan. By controlling the air conditioner, humidifier, and exhaust fan in a coordinated manner through the control chip, the temperature, humidity, and differential pressure in the hospital are maintained within a suitable range, thereby achieving rapid and precise dynamic adjustment to meet the strict requirements of infection control. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the control current of this utility model.
[0017] In the diagram, 6 is the display screen; 7 is the control cabinet; 8 is the control circuit; 1M is the first common terminal; I0 is the temperature sensor input terminal; I1 is the humidity sensor input terminal; I2 is the differential pressure sensor input terminal; L1 is the power input terminal; N is the power output terminal; 1L is the power supply terminal; 0 is the first signal output terminal; 1 is the second signal output terminal; 2 is the third signal output terminal; 3 is the temperature sensor output terminal; 4 is the humidity sensor output terminal; 5 is the differential pressure sensor output terminal; M is the second common terminal; K1 is the first intermediate relay; K2 is the second intermediate relay; K3 is the third intermediate relay; SB1 is the first switch; SB2 is the second switch; SB3 is the third switch; QF1 is the air switch; SB4 is the start switch; PE is the grounding terminal. Detailed Implementation
[0018] The present invention will be further described in detail below with reference to the accompanying drawings.
[0019] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the attached figures. Figure 1 In this specification, the terms "bottom surface" and "top surface," "inner" and "outer" refer to the direction toward or away from the geometry of a specific component. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "a plurality of" means two or more, unless otherwise explicitly and specifically defined by the direction of the center.
[0020] Example 1:
[0021] like Figures 1-2 As shown, a hospital air conditioning control system includes a display screen 6, an air conditioner, an exhaust fan, a humidifier, a temperature sensor, a humidity sensor, a differential pressure sensor, and a control cabinet 7. The temperature sensor can be a resistance temperature sensor, the humidity sensor can be an HF3223 type, and the differential pressure sensor can be a Model 161 micro differential pressure sensor. The display screen 6 is located at the front center of the control cabinet 7. The display screen 6, the air conditioner, and the exhaust fan are electrically connected to the control cabinet 7. The control cabinet 7 contains a control circuit 8, which includes a power module, a control module, and a switch module. One end of the power module is connected to one end of the control module, the other end of the control module is connected to one end of the switch module, and the other end of the switch module is connected to the other end of the power module.
[0022] The power module includes a main power supply and a control power supply. The control power supply converts AC power to DC power. The input terminal of the display screen 6 is connected to the DC output terminal of the control power supply, and the output terminal of the display screen 6 is connected to the DC input terminal of the control power supply. The AC input terminal of the control power supply is connected to the live wire of the main power supply, and the AC output terminal of the control power supply is connected to the neutral wire of the main power supply.
[0023] The control module includes a control chip, a first intermediate relay K1, a second intermediate relay K2, and a third intermediate relay K3. The control chip has 15 ports. An SR 20XP control chip can be selected. The control chip ports include a first common terminal 1M, a temperature sensor input terminal I0, a temperature sensor output terminal 3, a humidity sensor input terminal I1, a humidity sensor output terminal 4, a differential pressure sensor input terminal I2, a differential pressure sensor output terminal 5, a power input terminal L1, a power output terminal N, a ground terminal PE, a power supply terminal 1L, a first signal output terminal 0, a second signal output terminal 1, a third signal output terminal 2, and a second common terminal M. The first common terminal 1M is connected to the DC input terminal of the control power supply and to the output terminal of the display screen 6. The temperature sensor input terminal I0 is connected to the input terminal of the temperature sensor, the temperature sensor output terminal 3 is connected to the output terminal of the temperature sensor, and the differential pressure sensor input terminal I1... 2 is connected to the input terminal of the differential pressure sensor; 5 is connected to the output terminal of the differential pressure sensor; I1 is connected to the input terminal of the humidity sensor; 4 is connected to the output terminal of the humidity sensor; L1 is connected to the live wire of the main power supply; N is connected to the neutral wire of the main power supply; PE is connected to the earth; 1L is connected to the live wire of the main power supply; 0 is connected to one end of the first intermediate relay K1; the other end of the intermediate relay is connected to the neutral wire of the main power supply; 1 is connected to one end of the second intermediate relay K2; the other end of the second intermediate relay K2 is connected to the neutral wire of the main power supply; 2 is connected to one end of the third intermediate relay K3; the other end of the third intermediate relay K3 is connected to the neutral wire of the main power supply; the other ends of the first intermediate relay K1, the second intermediate relay K2, and the third intermediate relay K3 are interconnected.
[0024] Temperature sensor output terminal 3 is used to receive the resistance change transmitted by the temperature sensor; humidity sensor output terminal 4 is used to receive the frequency signal transmitted by the humidity sensor; differential pressure sensor output terminal 5 is used to receive the capacitance change value transmitted by the differential pressure sensor. Through different signals, the opening and closing of the first intermediate relay K1, the second intermediate relay K2, and the third intermediate relay K3 are controlled, thereby indirectly controlling the opening and closing of the air conditioner, humidifier, and exhaust fan. The PE terminal is used to connect to the ground; the power input terminal L1 and the power output terminal N are used to power the control chip; and the power supply terminal 1L is used to power the first intermediate relay K1, the second intermediate relay K2, and the third intermediate relay K3, forming a circuit.
[0025] The switch module includes a first switch SB1, a second switch SB2, and a third switch SB3. These switches are sequentially linked with a first intermediate relay K1, a second intermediate relay K2, and a third intermediate relay K3. The first intermediate relay K1 controls the closing of the first switch SB1, the second intermediate relay K2 controls the closing of the second switch SB2, and the third intermediate relay K3 controls the closing of the third switch SB3. One end of the first switch SB1 is connected to the live wire of the main power supply, and the other end is connected to one end of the air conditioner motor. The other end of the air conditioner motor is connected to the neutral wire of the main power supply. One end of the second switch SB2 is connected to the live wire of the main power supply, and the other end is connected to one end of the humidifier. The other end of the humidifier is connected to the neutral wire of the main power supply. One end of the third switch SB3 is connected to the live wire of the main power supply, and the other end is connected to one end of the exhaust fan motor. The other end of the exhaust fan motor is connected to the neutral wire of the main power supply. The first switch SB1, the second switch SB2, and the third switch SB3 are used to sequentially control the start and stop of the air conditioner, the exhaust fan, and the humidifier.
[0026] The bottom of the control cabinet 7 is equipped with multiple buffer feet. The interior of the control cabinet 7 is equipped with a heat dissipation device. The live wire and neutral wire of the main power supply are equipped with an air switch QF1 and a start switch SB4. The start switch SB4 and the air switch QF1 are both installed on the control cabinet 7 through a fixed electrical connection plate.
[0027] Specific implementation process: The air switch QF1 and start switch SB4 are closed, energizing the control chip. Based on the values detected by the temperature sensor, humidity sensor, and differential pressure sensor, when the temperature sensor detects a temperature outside the set range, the control chip controls the first signal output terminal 0 to output current, energizing the first intermediate relay K1 and closing the first switch SB1, thus starting the air conditioner. When the temperature sensor detects that the temperature has reached the set range, the control chip shuts off the output of the first signal output terminal 0, de-energizing the first intermediate relay K1 and opening the first switch SB1, thus turning off the air conditioner. When the humidity sensor detects a humidity outside the set range, the control chip controls the second signal output terminal 1 to output current, energizing the second intermediate relay K2 and closing the second switch SB2. When the humidity sensor detects that the humidity has reached the set range, the control chip shuts off the output of the second signal output terminal 1, and the second switch SB2 opens, thus turning off the humidifier. When the differential pressure sensor detects that the differential pressure is not within the set range, the control chip controls the output current of the third signal output terminal 2, which energizes the third intermediate relay K3 and closes the third switch SB3, thus starting the exhaust fan. When the differential pressure sensor detects that the differential pressure is within the set range, the control chip disconnects the output of the third signal output terminal 2, and the third switch SB3 opens, thus turning off the exhaust fan. By controlling the air conditioner, humidifier, and exhaust fan in a coordinated manner, the control chip maintains the temperature, humidity, and differential pressure in the hospital within a suitable range, thereby achieving rapid and precise dynamic adjustment to meet the strict requirements of infection control.
[0028] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.
[0029] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.
Claims
1. A hospital air conditioning control system, characterized in that, The system includes a display screen, an air conditioner, an exhaust fan, a humidifier, a temperature sensor, a humidity sensor, a differential pressure sensor, and a control cabinet. The display screen is located at the front center of the control cabinet. The display screen, air conditioner, and exhaust fan are electrically connected to the control cabinet. The control cabinet contains a control circuit, which includes a power module, a control module, and a switch module. One end of the power module is connected to one end of the control module, and the other end of the control module is connected to one end of the switch module. The other end of the switch module is connected to the other end of the power module.
2. The hospital air conditioning control system according to claim 1, characterized in that: The power module includes a main power supply and a control power supply. The control power supply converts AC power to DC power. The input terminal of the display screen is connected to the DC output terminal of the control power supply, and the output terminal of the display screen is connected to the DC input terminal of the control power supply. The AC input terminal of the control power supply is connected to the live wire of the main power supply, and the AC output terminal of the control power supply is connected to the neutral wire of the main power supply.
3. A hospital air conditioning control system according to claim 2, characterized in that: The control module includes a control chip, a first intermediate relay, a second intermediate relay, and a third intermediate relay. The control chip has 15 ports, including a first common terminal, a temperature sensor input terminal, a temperature sensor output terminal, a humidity sensor input terminal, a humidity sensor output terminal, a differential pressure sensor input terminal, a differential pressure sensor output terminal, a power input terminal, a power output terminal, a ground terminal, a power supply terminal, a first signal output terminal, a second signal output terminal, a third signal output terminal, and a second common terminal. The first common terminal is connected to the DC input terminal of the control power supply and to the output terminal of the display screen. The temperature sensor input terminal is connected to the input terminal of the temperature sensor, the temperature sensor output terminal is connected to the output terminal of the temperature sensor, the differential pressure sensor input terminal is connected to the input terminal of the differential pressure sensor, and the differential pressure sensor output terminal is connected to... The output terminal of the differential pressure sensor is connected to the input terminal of the humidity sensor, the output terminal of the humidity sensor is connected to the output terminal of the humidity sensor, the power input terminal is connected to the live wire of the main power supply, the power output terminal is connected to the neutral wire of the main power supply, the grounding terminal is connected to the earth, the power supply terminal is connected to the live wire of the main power supply, the first signal output terminal is connected to one end of the first intermediate relay, the other end of the intermediate relay is connected to the neutral wire of the main power supply, the second signal output terminal is connected to one end of the second intermediate relay, the other end of the second intermediate relay is connected to the neutral wire of the main power supply, the third signal output terminal is connected to one end of the third intermediate relay, the other end of the third intermediate relay is connected to the neutral wire of the main power supply, and the other ends of the first, second, and third intermediate relays are interconnected.
4. A hospital air conditioning control system according to claim 2, characterized in that: The switch module includes a first switch, a second switch, and a third switch. The first, second, and third switches are sequentially linked with a first, second, and third intermediate relays. The first intermediate relay controls the closing of the first switch, the second intermediate relay controls the closing of the second switch, and the third intermediate relay controls the closing of the third switch. One end of the first switch is connected to the live wire of the main power supply, and the other end of the first switch is connected to one end of the air conditioner motor. The other end of the air conditioner motor is connected to the neutral wire of the main power supply. One end of the second switch is connected to the live wire of the main power supply, and the other end of the second switch is connected to one end of the humidifier. The other end of the humidifier is connected to the neutral wire of the main power supply. One end of the third switch is connected to the live wire of the main power supply, and the other end of the third switch is connected to one end of the exhaust fan motor. The other end of the exhaust fan motor is connected to the neutral wire of the main power supply. The first, second, and third switches are used to sequentially control the start and stop of the air conditioner, the exhaust fan, and the humidifier.
5. A hospital air conditioning control system according to claim 1, characterized in that: The bottom of the control cabinet is equipped with multiple cushioning feet, and the interior of the control cabinet is equipped with a heat dissipation device.
6. A hospital air conditioning control system according to claim 2, characterized in that: Both the live wire and the neutral wire of the main power supply are equipped with air switches and start switches, and the start switches and air switches are installed on the control cabinet through fixed electrical connection plates.