A temperature and humidity control system and method for hospital operating rooms
The system addresses inefficiencies in hospital operating room air conditioning by using independent humidifying and dehumidifying bellows with precise sensors and components for accurate humidity control, reducing energy use and eliminating cold and heat offsets.
Patent Information
- Application Number
- CN202411529595.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2044-10-30
AI Technical Summary
Existing hospital operating room air conditioning systems face inefficiencies in humidity control, including passive dehumidification methods that consume high energy, inaccurate humidity adjustment, and temperature and humidity feedback inaccuracies, leading to cold and heat offsets and uneven air conditions.
A temperature and humidity control system with independent humidifying and dehumidifying bellows, each equipped with volutes, atomizing and drying components, and multiple sensors, allowing for precise humidity adjustment and real-time feedback, reducing energy consumption and eliminating cold and heat offsets.
The system achieves accurate and efficient humidity control with reduced energy consumption, improved air mixing, and precise temperature and humidity regulation, meeting stringent operating room cleanliness and comfort requirements.
Smart Images
Figure CN119022453B_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of temperature and humidity control, and in particular, relates to a temperature and humidity control system and method for hospital operating rooms. Background Art
[0002] Hospital operating rooms have requirements for air purification levels and air temperature and humidity. For example, the laminar air purification levels in operating rooms are divided into 100, 1,000, 10,000, and 100,000 levels. Surgeries such as cranial surgery, ophthalmic surgery, cardiopulmonary surgery, organ transplantation, and artificial joint replacement have strict requirements on the operating room environment. The cleanliness of the operating room should reach Class 100, which is the highest level of cleanliness, to minimize the probability of wound infection. In addition, the temperature and humidity in the operating room play an important role in controlling wound infection and preventing the frequent accumulation of pathogenic microorganisms. The reason is that the activity of enzymes and the rate of metabolism in microorganisms are different under different temperature and humidity conditions. According to the "General Hospital Building Design Code" GB51039-2014 requirements:
[0003] Generally speaking, the temperature in the operating room should not be lower than 20°C in winter and higher than 26°C in summer.
[0004] Indoor relative humidity should not be lower than 30% in winter and higher than 65% in summer;
[0005] An air conditioning system or a fresh air ventilation system with a terminal filter efficiency not less than that of a high or medium efficiency filter should be used. Positive pressure should be maintained in the operating room, the ventilation rate should not be less than 6 times / h, and the noise level should not exceed 50dB (A).
[0006] In view of the above temperature and humidity requirements, the temperature and humidity of the existing hospital operating room are controlled by the central air conditioning system, but the existing temperature and humidity control has the following shortcomings:
[0007] 1. Humidity reduction control. The existing air conditioning system reduces the humidity of the air by lowering the surface temperature of the evaporator, causing the water vapor in the air to condense on the surface of the evaporator and be discharged from the drain pipe. This method is passive dehumidification and needs to be circulated for a period of time. The air passes through the evaporator continuously to dehumidify. It takes a long time to dehumidify, and the dehumidification efficiency is highest only in the internal circulation mode. If the outdoor air humidity is high, turn on the dehumidification mode in the external circulation mode, and the dehumidification time will be longer.
[0008] In addition, the dehumidification mode of the air conditioner is actually almost the same as the cooling mode, with the only difference being that the wind speed is low in the dehumidification mode, which causes the air to stay in the air cavity longer than in the cooling mode. The dehumidification mode requires the operation of the four major components of the air conditioner, and the power difference between the dehumidification mode and the cooling mode is small. Therefore, in order to reduce the humidity of the air, the air conditioning system operates in the cooling mode, and the power consumption cost of dehumidification cannot be reduced.
[0009] 2. Increase humidity control. The existing air conditioning humidification working modes are mainly divided into the following three types:
[0010] a. Wet film humidification, tap water flows through the wet film (wet film is also called water curtain). Generally, the water of the wet film is not circulated, and flows directly to the drain pipe after passing through the wet film. There are also control pumps that use pumps to circulate tap water, but the cost is relatively high. Wet film humidification generally controls a DO point. The humidity of the air increases greatly after passing through the wet film. The humidification method is simple and rough, and the humidity control is not accurate.
[0011] b. High-pressure micro-mist, with its own pressurized water pump, uses the water pump to increase the water pressure to form high-pressure micro-mist. After the air is mixed with the high-pressure micro-mist, the humidity increases accordingly. High-pressure micro-mist generally controls one or two DO points. The high-pressure micro-mist humidification method is similar to wet film humidification. Both belong to isenthalpic humidification. The water pump nozzle is large, the amount of water sprayed at one time is large, and the humidification accuracy is not high.
[0012] c. Steam humidification. Steam humidification modes include electric humidification and electrode humidification. These modes all belong to the "boiling water" principle. The humidification process is to add dry steam to the air. The amount of dry steam can be adjusted by a solenoid valve. The humidity control is accurate and is mainly used for constant temperature and humidity environment requirements or purification air conditioning. However, the steam humidification method consumes a lot of energy.
[0013] If the above-mentioned wet film humidification and high-pressure micro-fog method is used, the humidification control is rough, and the humidity increment is likely to exceed the set humidity value. In addition, the existing air conditioning system does not have a subsequent dehumidification remediation program, which makes the humidity control accuracy poor. Although steam humidification control is accurate, the power consumption is significantly higher than that of wet film humidification and high-pressure micro-fog, and the comprehensive energy consumption of the air conditioning system is high.
[0014] 3. Temperature control: use the internal circulation air and / or external circulation air to cool down through the evaporator, or heat up through the condenser. The heated or cooled air then passes through the primary, medium and high efficiency filters before entering the operating room, where the cold and hot air and humidity are mixed. Operating rooms with low cleanliness requirements, such as Class 10,000, Class 100,000, and Class 300,000, use a unified temperature and humidity control method for their air conditioning systems, i.e., temperature and humidity are controlled simultaneously. However, this control method has the phenomenon of cold and heat offset. For example, when the humidity is reduced through the evaporator, the temperature is reduced accordingly, and then it is sent to the operating room after being heated, resulting in unreasonable reheating, i.e., the problem of cold and heat offset.
[0015] The air conditioning systems of operating rooms with cleanliness levels of 100 or 1,000 use independent temperature and humidity control. However, the humidity control in the independent temperature and humidity control mode still has the above-mentioned problems of inaccurate humidification control or inability to reduce dehumidification energy consumption.
[0016] 4. Whether it is an independent air conditioner or a central air conditioner, there is no independent air mixing chamber. Instead, the air is discharged from the outlet after the temperature and humidity are mixed in the evaporation chamber or condensation chamber. Generally, temperature and humidity sensors are installed in the center, entrances and exits, top and walls of the operating room. The air with uneven temperature and humidity has high or low temperature, high or low humidity. The high or low air is captured by one or more temperature and humidity sensors and fed back to the air conditioning system, making the temperature and humidity feedback inaccurate, resulting in deviations in temperature and humidity adjustment. Summary of the invention
[0017] In view of the shortcomings of the prior art, the present invention provides a temperature and humidity control system for a hospital operating room, comprising a control module and an indoor unit and an outdoor unit respectively electrically connected to the control module, and the indoor unit and the outdoor unit are connected through a refrigerant circulation pipeline;
[0018] It also includes a humidifying bellows, a dehumidifying bellows and an air outlet assembly;
[0019] The humidifying bellows, dehumidifying bellows, air outlet assembly and operating room are connected in sequence through ventilation ducts, the exhaust port of the operating room is connected with the internal circulation air inlet of the indoor unit, and the internal circulation air outlet of the indoor unit is connected with the air inlet of the humidifying bellows, thereby forming an internal air circulation; the external circulation air inlet and the external circulation air outlet of the indoor unit are respectively connected with the fresh air duct, thereby forming an external circulation; the air outlet of the humidifying bellows and the air outlet of the dehumidifying bellows are both provided with a one-way valve;
[0020] The inner circulation air outlet of the indoor unit and the air inlet of the humidifying bellows are connected to the air inlet of the dehumidifying bellows through a ventilation duct provided with a two-position three-way solenoid valve, the ventilation duct between the one-way valve of the humidifying bellows and the air inlet of the dehumidifying bellows is provided with a first on-off solenoid valve, and the one-way valve of the dehumidifying bellows is connected to the one-way valve of the humidifying bellows through a ventilation duct provided with a second off-off solenoid valve;
[0021] The humidifying bellows and the dehumidifying bellows both include a volute and a temperature and humidity sensor and a fan arranged in the volute. The volute of the humidifying bellows is provided with at least one atomizing component for atomizing water, and the volute of the dehumidifying bellows is provided with at least one drying component for filtering moisture in the air.
[0022] The control module is electrically connected to the two-position three-way solenoid valve, the first on-off solenoid valve, the second on-off solenoid valve, all temperature and humidity sensors, all fans, the atomizing component and the drying component respectively.
[0023] Compared with the prior art, the temperature and humidity control system for hospital operating rooms provided by the present invention has the following advantages:
[0024] 1. The indoor unit only has the function of controlling temperature. The humidity control function is completed by the humidifying bellows and the dehumidifying bellows. The temperature and humidity are controlled independently without affecting each other, avoiding repeated heating and hot and cold offset problems.
[0025] 2. If the air humidity is insufficient, the humidification bellows will increase the humidity. If the air humidity is sufficient or too humid, the humidity will be further adjusted by the dehumidification bellows. Compared with the existing evaporator humidity control method, the humidification bellows and the dehumidification bellows work together to adjust the humidity, and the humidity control is more accurate, overcoming the problem that the existing air-conditioning system does not have a subsequent dehumidification remedial procedure.
[0026] 3. Both the humidifying bellows and the dehumidifying bellows use a volute tube. Compared with the existing in-line air duct, the temperature and humidity mixed air path is greatly increased, which can significantly improve the air mixing effect and reduce the probability of inaccurate temperature and humidity feedback values in the operating room.
[0027] Preferably, the atomization assembly includes a conical atomization shell and an ultrasonic atomization sheet; the larger end of the conical atomization shell is provided with an upward opening and the opening is connected to the bottom wall of the volute of the humidification bellows; the ultrasonic atomization sheet is installed at the bottom of the inner side of the conical atomization shell, and the water at the bottom of the conical atomization shell is atomized by the ultrasonic atomization sheet and discharged into the volute. The atomization assembly also includes a water storage bottle, a liquid level sensor, a refrigeration plate assembly, an electric heating wire and a water pump. The water storage bottle is fixedly connected to the bottom of the conical atomization shell, the liquid level sensor is installed in the conical atomization shell, the electric heating wire is installed in the conical atomization shell, and the water pump is installed in the water storage bottle, and the water in the water storage bottle is pumped into the conical atomization shell through the water pump; the refrigeration plate assembly includes a semiconductor refrigeration plate and a radiator, the semiconductor refrigeration plate is embedded in the side wall of the conical atomization shell, and the refrigeration surface of the semiconductor refrigeration plate is located inside the conical atomization shell, and the heat dissipation surface of the semiconductor refrigeration plate is located outside the conical atomization shell; the radiator is fixedly connected to the heat dissipation surface.
[0028] Compared with the existing wet film humidification method, high-pressure micro-fog method and steam humidification method, the atomization component in the present invention has low power of the ultrasonic atomization sheet itself, and the energy consumption required for humidification is significantly lower than that of the steam humidification method. The liquid level sensor and the water pump form automatic water replenishment, and water replenishment is made on demand. Compared with the wet film humidification method, the water consumption is lower. The ultrasonic atomization sheet uses electronic high-frequency oscillation to break up the liquid water molecular structure through the high-frequency resonance of the ceramic atomization sheet to produce a naturally flowing water mist. Compared with the high-pressure micro-fog method, a high-pressure water pump is not required, and the humidity control is more accurate. In addition, the refrigeration sheet assembly and the electric heating wire can make up for the disadvantage that the air temperature decreases or increases after the water mist is mixed with the air. For example, for hot air, the electric heating wire heats the atomized water temperature to slightly higher than the air temperature, which can avoid the disadvantage that the air temperature decreases after mixing. On the contrary, for cold air, the refrigeration sheet assembly reduces the atomized water temperature to the same as the air temperature, which can avoid the disadvantage that the air temperature rises after the water mist with a temperature higher than the air is mixed with the air.
[0029] Preferably, the drying component includes a booster air pump and a drying tank; the bottom wall of the volute of the dehumidification bellows is provided with two adjacent interfaces, the air inlet end of the booster air pump is connected to one of the interfaces, the exhaust end of the booster air pump is connected to the air inlet end of the drying tank, and the exhaust end of the drying tank is connected to the other interface, and the air inlet end of the booster air pump is located in the upwind area of the exhaust end of the drying tank. A gate assembly is provided between two adjacent interfaces of the volute of the dehumidifying bellows; the gate assembly includes a grooved slide rail, a gate body and a telescopic motor; there are two grooved slide rails, which are longitudinally fixed to the two side walls of the volute in a one-to-one correspondence, and the slide grooves of the grooved slide rails are opposite to each other; the top wall of the volute of the dehumidifying bellows is provided with a notch facing the grooved slide rail, and the gate body is inserted between the two slide grooves from the notch; the telescopic motor is longitudinally fixed to the outside of the top wall of the volute, and the telescopic rod of the telescopic motor is fixedly connected to the gate body, and the gate body is driven to descend by the telescopic motor, and then the gate body is inserted into the volute along the slide groove to block the air circulation between the two interfaces in the volute.
[0030] Compared with the existing air conditioner evaporator dehumidification, the power of the booster pump in the drying component of the present invention is much lower than the compressor power of the external unit, and the energy consumption required for the drying process is lower. The molecular sieve in the drying tank can actively absorb water molecules in the air, and the humidification efficiency and dehumidification effect are more obvious than the passive dehumidification method of the evaporator.
[0031] Preferably, the atomizing assembly is provided with two groups, one of which is close to the air inlet of the humidifying bellows, and the other is located in the middle of the volute of the humidifying bellows; three temperature and humidity sensors are provided in the volute of the humidifying bellows, two of which are respectively located at the air inlet and the air outlet of the humidifying bellows, and the other is located in the upwind area of the atomizing assembly in the middle of the volute. In addition, the drying assembly is provided with two groups, the two groups of drying assemblies are respectively close to the air inlet and the air outlet of the volute of the dehumidifying bellows, and each group of drying assemblies is provided with a corresponding gate assembly; three temperature and humidity sensors are provided in the dehumidifying bellows, two of which are respectively located at the air inlet and the air outlet of the volute of the dehumidifying bellows, and the other is located in the upwind area close to the air outlet of the volute.
[0032] The two groups of atomizing components and drying components in the present invention respectively adopt two-stage humidification and two-stage dehumidification, graded humidification and dehumidification, and the accuracy level of humidity regulation is the same as that of steam humidification, but the energy consumption is lower than that of steam humidification.
[0033] Preferably, the humidification bellows and dehumidification bellows both include a shell covering the outside of the volute, and the inside of the volute wall, the space between the volute wall and the adjacent wall, and the space between the volute and the corresponding shell are filled with sound insulation and heat preservation materials. The filling area in the shell reserves the lifting space required for the gate assembly, and the sound insulation and heat preservation materials are filled to reduce the sound of the humidification bellows and the dehumidification bellows during operation, meeting the noise reduction requirements of the operating room.
[0034] The present invention also includes a mixing bellows, which includes a shell, a volute, a temperature and humidity sensor, an electric heating wire and a fan; the air inlet and the air outlet of the volute are respectively connected between the second on-off solenoid valve and the air outlet assembly, the shell is wrapped around the outside of the volute, and the temperature and humidity sensor, the electric heating wire and the fan are all installed in the volute. The mixing bellows has two functions. One is to further extend the mixed air path, and the other is that the air temperature after passing through the humidification bellows and the dehumidification bellows may be slightly lower than the air temperature at the indoor unit outlet. After entering the mixing bellows, it is fine-tuned by the electric heating wire to further improve the temperature and humidity control accuracy.
[0035] The present invention also provides a temperature and humidity control method for hospital operating rooms, which is applied to the temperature and humidity control system for hospital operating rooms, and the steps are as follows:
[0036] S1. In internal circulation mode, the control module connects the internal circulation air inlet and the internal circulation air outlet of the internal unit to the operating room and the two-position three-way solenoid valve respectively, sets the temperature and humidity of the operating room on the control panel corresponding to the control module, and turns on the cooling or heating mode of the external unit;
[0037] S101. The return air of the operating room is cooled or heated by the indoor unit, and the two-position three-way solenoid valve connects the indoor unit and the humidification bellows. The temperature and humidity sensor at the air inlet in the humidification bellows feeds back the monitored temperature and humidity to the control module. If the monitored humidity value is less than the set humidity value, the ultrasonic atomizer sheet near the air inlet works to increase the air humidity; if the monitored humidity value is greater than the set humidity value, the ultrasonic atomizer sheet near the air inlet does not work;
[0038] S1011. When the monitored humidity value is less than the set humidity value, if the monitored temperature value is greater than the set temperature value, the semiconductor refrigeration sheet works to reduce the water temperature in the conical atomization shell; if the monitored temperature value is less than the set temperature value, the electric heating wire works to increase the water temperature in the conical atomization shell;
[0039] S1012. The liquid level sensor monitors the water level in the conical atomizer shell in real time. When the water level in the conical atomizer shell is lower than the set water level, the water pump replenishes the water in the water storage bottle into the conical atomizer shell; when the water level in the conical atomizer shell is higher than or equal to the set water level, the water pump stops;
[0040] S102. The temperature and humidity sensor in the middle of the humidification bellows feeds back the monitored temperature and humidity to the control module. If the monitored humidity value is less than the set humidity value, the ultrasonic atomizer in the middle of the humidification bellows works to increase the air humidity; if the monitored humidity value is greater than the set humidity value, the ultrasonic atomizer in the middle of the humidification bellows does not work;
[0041] S103. The temperature and humidity sensor at the air outlet of the humidification bellows feeds back the monitored temperature and humidity to the control module. If the positive and negative deviation between the monitored humidity value and the set humidity value is ≤2%, the second on-off solenoid valve opens, and the humidified air enters the mixing bellows; if the positive and negative deviation between the monitored humidity value and the set humidity value is >2%, the first on-off solenoid valve opens, and the humidified air enters the dehumidification bellows;
[0042] S1031. After the humidified air enters the dehumidifying bellows, the temperature and humidity sensor at the air inlet of the dehumidifying bellows feeds back the monitored temperature and humidity to the control module. According to the fed-back humidity value, the booster air pump and the drying tank of the drying assembly near the air inlet of the dehumidifying bellows work at an appropriate power. At the same time, the telescopic motor of the corresponding gate assembly drives the gate body to be inserted into the corresponding slide slot, so that the air flows through the booster air pump and the drying tank in sequence and then returns to the volute of the dehumidifying bellows;
[0043] S1032. The temperature and humidity sensor at the air outlet of the dehumidification bellows feeds back the monitored temperature and humidity to the control module. If the feedback humidity value, if the positive and negative deviation between the monitored humidity value and the set humidity value is ≤2%, the dehumidified air enters the mixing bellows; if the positive and negative deviation between the monitored humidity value and the set humidity value is >2%, according to the feedback difference, the booster air pump and the drying tank of the drying assembly near the air outlet of the dehumidification bellows work at an appropriate power, and at the same time, the telescopic motor of the corresponding gate assembly drives the gate body to be inserted into the corresponding slide slot, so that the air flows through the booster air pump and the drying tank in turn and then returns to the volute of the dehumidification bellows. The air after two dehumidifications enters the mixing bellows;
[0044] S104. The temperature and humidity sensor in the middle of the mixing air box feeds back the monitored temperature and humidity to the control module. If the fed-back temperature value is less than the set temperature value, the electric heating wire in the mixing air box heats the air to the set temperature value;
[0045] S105. The air after fine-tuning the temperature in the mixing air box passes through the high-efficiency filter of the air outlet assembly and the operating room in sequence, and then enters the indoor unit, thereby circulating internally;
[0046] S2. External circulation mode: the control module connects the external circulation air inlet and the external circulation air outlet of the indoor unit to the fresh air duct respectively. The external air of the fresh air duct enters the indoor unit. The temperature and humidity of the operating room are set on the control panel corresponding to the control module. The outdoor unit starts the cooling or heating mode. The temperature and humidity of the air are adjusted according to S101-S105. The return air passes through the external circulation air outlet of the indoor unit and the fresh air duct in turn and is then discharged.
[0047] Compared with the prior art, the advantages of the method provided by the present invention include: temperature sensors are provided in the dehumidifying bellows, the humidifying bellows and the mixing bellows, and the humidity adjustment process and the final temperature fine-tuning process are all real-time feedback of temperature and humidity throughout the entire process. Compared with the collection method of only arranging temperature and humidity probes in the operating room to feedback the temperature and humidity values, the number of temperature and humidity monitoring feedback points is greater, and accordingly, the control of temperature and humidity is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS
[0048] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0049] Figure 1 It is a schematic diagram of circuit connection in the present invention;
[0050] Figure 2 The structure of the humidification bellows in the present invention is shown in FIG. Figure 1 ;
[0051] Figure 3 The structure of the humidification bellows in the present invention is shown in FIG. Figure 2 ;
[0052] Figure 4 It is a schematic diagram of the structure inside the shell of the humidification bellows in the present invention;
[0053] Figure 5 for Figure 4 Schematic diagram of the internal structure of the volute of the medium humidification bellows;
[0054] Figure 6 It is a structural schematic diagram of the atomization assembly in the present invention;
[0055] Figure 7 The structure of the dehumidification bellows in the present invention is shown in FIG. Figure 1 ;
[0056] Figure 8 The structure of the dehumidification bellows in the present invention is shown in FIG. Figure 2 ;
[0057] Fig. 9 for Figure 8 A schematic diagram of the structure inside the shell of the medium dehumidification bellows;
[0058] Fig.10 for Figure 8 Schematic diagram of the cross-section structure.
[0059] Figure numerals: 1, control module; 2, internal unit; 3, external unit; 4, humidification bellows; 5, dehumidification bellows; 6, air outlet assembly; 7, mixing bellows; 8, one-way valve; 9, two-position three-way solenoid valve; 10, first on-off solenoid valve; 11, second off-off solenoid valve; 12, housing; 13, temperature and humidity sensor; 14, fan; 15, atomization assembly; 16, drying assembly; 17, electric heating wire; 18, air inlet pipe; 19, exhaust pipe; 20, cone Atomizer shell; 21. Ultrasonic atomizer; 22. Water storage bottle; 23. Liquid level sensor; 24. Refrigeration plate assembly; 25. Connecting plate; 26. Water pump; 27. Overflow pipe; 28. Drain trough; 29. Semiconductor refrigeration plate; 30. Radiator; 31. Booster air pump; 32. Drying tank; 33. Gate assembly; 34. Slide rail with groove; 35. Gate body; 36. Telescopic motor; 37. Volute; 38. Bracket with bottom support; 39. Interlayer. DETAILED DESCRIPTION
[0060] In view of the deficiencies in the prior art, the inventor of this case has proposed the technical solution of the present invention after long-term research and extensive practice. The following will further explain the technical solution, its implementation process and principle, etc. in conjunction with the drawings in the embodiments of this application and specific implementation cases.
[0061] It should be noted that the embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention. The described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, the present invention covers any substitution, modification, equivalent method and scheme made on the spirit, principle and scope of the present invention defined by the claims. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0062] In the description of the present application, "first", "second", "third" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, "one" or "an" and other similar words do not indicate a quantity limitation, but indicate the existence of at least one. "Include" or "comprise" and other similar words mean that the elements or objects appearing before "include" or "comprises" include the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Example
[0063] Embodiment 1 provides a temperature and humidity control system for hospital operating rooms, including a control module 1 and an indoor unit 2 and an outdoor unit 3 electrically connected to the control module 1, and the indoor unit 2 and the outdoor unit 3 are connected through a refrigerant circulation pipeline. The internal and external circulation functions are integrated in the indoor unit 2. This embodiment also includes a humidifying bellows 4, a dehumidifying bellows 5, an air outlet component 6 and a mixing bellows 7, wherein the air outlet component 6 is provided with a high-efficiency filter to meet the cleanliness requirements of the operating room. The specific air duct connection method is as follows:
[0064] like Figure 1As shown, the humidifying bellows 4, dehumidifying bellows 5, mixing bellows 7, air outlet assembly 6 and the operating room are connected in sequence through the ventilation duct, the exhaust port of the operating room is connected to the internal circulation air inlet of the indoor unit 2, and the internal circulation air outlet of the indoor unit 2 is connected to the air inlet of the humidifying bellows 4, thereby forming an internal air circulation; the external circulation air inlet and the external circulation air outlet of the indoor unit 2 are respectively connected to the fresh air duct, thereby forming an external circulation. The air outlet of the humidifying bellows 4 and the air outlet of the dehumidifying bellows 5 are both provided with a one-way valve 8, the function of the one-way valve 8 here is to prevent air from backflowing into the humidifying bellows 4 and the dehumidifying bellows 5. The inner circulation air outlet of the indoor unit 2 and the air inlet of the humidifying wind box 4 are connected to the air inlet of the dehumidifying wind box 5 through a ventilation duct provided with a two-position three-way solenoid valve 9, the ventilation duct between the one-way valve 8 of the humidifying wind box 4 and the air inlet of the dehumidifying wind box 5 is provided with a first on-off solenoid valve 10, and the one-way valve 8 of the dehumidifying wind box 5 and the one-way valve 8 of the humidifying wind box 4 are connected through a ventilation duct provided with a second off solenoid valve 11, and the ventilation duct between the one-way valve 8 of the dehumidifying wind box 5 and the second off solenoid valve 11 is further connected to the mixing wind box 7. The first off solenoid valve, the second off solenoid valve 11 and the two-position three-way solenoid valve 9 are electrically connected to the output end of the controller respectively.
[0065] like Figure 2 , Figure 4 , Figure 5 , Figure 7 and Fig.10 As shown, the humidifying bellows 4, dehumidifying bellows 5 and mixing bellows 7 in this embodiment have the same partial structures, and the same parts include: a housing 12, a volute 37, and a temperature and humidity sensor 13 and a fan 14 arranged in the volute 37. The housing 12 covers the outside of the volute 37, and the inside of the tube wall of the volute 37, the space between the tube wall of the volute 37 and the adjacent tube wall, and the space between the volute 37 and the corresponding housing 12 are filled with sound insulation and heat preservation materials. The inside of the tube wall of the volute 37 here refers to the side wall of the volute 37 provided with an interlayer 39, and the interlayer 39 is filled with sound insulation and heat preservation materials. The difference is that the volute 37 of the humidifying bellows 4 is provided with two groups of atomizing components 15 for atomizing water, and the volute 37 of the dehumidifying bellows 5 is provided with two groups of drying components 16 for filtering moisture in the air. An electric heating wire 17 is provided in the mixing bellows 7 for fine-tuning the air temperature. In this embodiment, the cross-section of the scroll tube 37 is rectangular, the shape of the housing 12 is cylindrical, and the two ends of the scroll tube 37 are respectively provided with an air inlet pipe 18 and an air outlet pipe 19 for connection, the air inlet pipe 18 extends from the side of the housing 12, and the air outlet pipe 19 extends from the center of the side of the housing 12. The electric heating wire 17 and all the fans 14 are electrically connected to the output end of the control module 1, and all the temperature and humidity sensors 13 are electrically connected to the input end of the control module 1.
[0066] like Figure 3 , Figure 5 , Figure 6 As shown, the above-mentioned atomization assembly 15 includes a conical atomization shell 20 and an ultrasonic atomization sheet 21. The larger end of the conical atomization shell 20 is provided with an upward opening and the opening is connected to the bottom wall of the volute 37 of the humidification bellows 4. The ultrasonic atomization sheet 21 is installed at the bottom of the inner side of the conical atomization shell 20, and the water at the bottom of the conical atomization shell 20 is atomized and discharged into the volute 37 through the ultrasonic atomization sheet 21. The atomization assembly 15 also includes a water storage bottle 22, a liquid level sensor 23, a cooling sheet assembly 24, an electric heating wire 17 and a water pump 26. The water storage bottle 22 is fixedly connected to the bottom of the conical atomization shell 20 through a bottom bracket 38, the liquid level sensor 23 is installed in the conical atomization shell 20, the electric heating wire 17 is installed in the conical atomization shell 20, and the water pump 26 is installed in the water storage bottle 22, and the water in the water storage bottle 22 is pumped into the conical atomization shell 20 through the water pump 26. In addition, an overflow port is provided on the side wall of the conical atomizing shell 20, and the overflow port extends to the water storage bottle 22 through the overflow pipe 27. A drainage groove 28 is provided along the bottom wall of the volute 37 of the humidifying bellows 4, and the drainage groove 28 is connected to the conical atomizing shell 20. The water liquefied on the inner surface of the volute 37 flows into the conical atomizing shell 20 along the drainage groove 28. If the liquid level of the conical atomizing shell 20 is higher than the overflow port, it is back-discharged from the overflow pipe 27 to the water storage bottle 22.
[0067] like Figure 6As shown, the cooling plate assembly 24 in this embodiment includes a semiconductor cooling plate 29 and a radiator 30, wherein the semiconductor cooling plate 29 is embedded in the side wall of the conical atomizing shell 20, and the cooling surface of the semiconductor cooling plate 29 is located inside the conical atomizing shell 20, and the heat dissipation surface of the semiconductor cooling plate 29 is located outside the conical atomizing shell 20; the radiator 30 is fixedly connected to the heat dissipation surface. Compared with the existing wet film humidification method, high-pressure micro-fog method and steam humidification method, the ultrasonic atomizing plate 21 of the atomizing assembly 15 has low power itself, and the energy consumption required for humidification is significantly lower than that of the steam humidification method. The liquid level sensor 23 and the water pump 26 form automatic water replenishment, which replenishes water on demand, and the water consumption is lower than that of the wet film humidification method. The ultrasonic atomizing plate 21 uses electronic high-frequency oscillation to break up the liquid water molecule structure through the high-frequency resonance of the ceramic atomizing plate to produce a naturally floating water mist. Compared with the high-pressure micro-fog method, a high-pressure water pump 26 is not required, and the humidity control is more accurate. In addition, the refrigeration plate assembly 24 and the electric heating wire 17 can make up for the disadvantage that the air temperature decreases or increases after the water mist is mixed with the air. For example, for hot air, the electric heating wire 17 heats the atomized water temperature to a temperature slightly higher than the air temperature, which can avoid the disadvantage of the air temperature decreasing after mixing. Conversely, for cold air, the refrigeration plate assembly 24 reduces the atomized water temperature to the same as the air temperature, which can avoid the disadvantage that the air temperature rises after the water mist with a temperature higher than the air is mixed with the air. The ultrasonic atomization plate 21, electric heating wire 17, water pump 26 and semiconductor refrigeration plate 29 of the atomization assembly 15 here are respectively electrically connected to the output end of the control module 1, and the liquid level sensor 23 is electrically connected to the input end of the control module 1.
[0068] like Figure 7 , Figure 8 , Fig. 9 and Fig.10As shown, the drying assembly 16 includes a booster air pump 31 and a drying tank 32; the bottom wall of the volute 37 of the dehumidifying bellows 5 is provided with two adjacent interfaces, the air inlet end of the booster air pump 31 is connected to one of the interfaces, the exhaust end of the booster air pump 31 is connected to the air inlet end of the drying tank 32, and the exhaust end of the drying tank 32 is connected to the other interface, and the air inlet end of the booster air pump 31 is located in the upwind area of the exhaust end of the drying tank 32. The drying tank 32 is provided with a back-blowing interface and a water filter interface. Dry air is introduced regularly through the back-blowing interface, and the moisture adsorbed in the drying tank 32 can be blown out from the water filter interface. The drying tank 32 can be reused to maintain the drying effect. A gate assembly 33 is provided between two adjacent interfaces of the volute 37 of the dehumidifying bellows 5; the gate assembly 33 includes a grooved slide rail 34, a gate body 35 and a telescopic motor 36; the grooved slide rail 34 is provided with two, and the two grooved slide rails 34 are longitudinally fixed to the two side walls of the volute 37 in a one-to-one correspondence, and the slide grooves of the grooved slide rails 34 are opposite; the top wall of the volute 37 of the dehumidifying bellows 5 is provided with a notch that is directly opposite to the grooved slide rail 34, and the gate body 35 is inserted between the two slide grooves from the notch; the telescopic motor 36 is longitudinally fixed to the outside of the top wall of the volute 37, and the telescopic rod of the telescopic motor 36 is fixedly connected to the gate body 35 through the connecting plate 25, and the gate body 35 is driven to descend by the telescopic motor 36, so that the gate body 35 is inserted into the volute 37 along the slide groove to block the air circulation between the two interfaces in the volute 37.
[0069] Compared with the existing air conditioner evaporator dehumidification, the power of the booster pump 31 in the drying component 16 of this embodiment is much lower than the power of the compressor of the external unit 3, and the energy consumption required for the drying process is lower. The molecular sieve in the drying tank 32 can actively absorb water molecules in the air, and the humidification efficiency and dehumidification effect are more obvious compared with the passive dehumidification method of the evaporator.
[0070] In order to improve the humidity control accuracy, the present embodiment adopts a two-stage adjustment, that is, secondary humidification and secondary dehumidification. The specific method is that two groups of atomizing components 15 are provided, and two groups of drying components 16 are provided. One group of atomizing components 15 is close to the air inlet of the humidifying bellows 4, and the other group of atomizing components 15 is located in the middle of the volute 37 of the humidifying bellows 4; three temperature and humidity sensors 13 are provided in the volute 37 of the humidifying bellows 4, of which two temperature and humidity sensors 13 are respectively located at the air inlet and the air outlet of the humidifying bellows 4, and the other temperature and humidity sensor 13 is located in the upwind area of the atomizing component 15 in the middle of the volute 37. In addition, as Figure 7 and Fig. 9As shown, two groups of drying components 16 are respectively close to the air inlet and air outlet of the volute 37 of the dehumidification wind box 5, and each group of drying components 16 is provided with a corresponding gate component 33; three temperature and humidity sensors 13 are provided in the dehumidification wind box 5, two of which are respectively located at the air inlet and air outlet of the volute 37 of the dehumidification wind box 5, and the other temperature and humidity sensor 13 is located in the upwind area near the air outlet of the volute 37. The two groups of atomization components 15 and drying components 16 respectively adopt two-level humidification and two-level dehumidification, graded humidification and dehumidification, and the accuracy level of humidity regulation is the same as that of steam humidification, but the energy consumption is lower than that of steam humidification.
[0071] The mixing air box 7 in this embodiment includes a housing 12, a volute 37, a temperature and humidity sensor 13, an electric heating wire 17 and a fan 14. The housing 12 and the volute 37 of the mixing air box 7 have the same structure as the housing 12 and the volute 37 of the humidifying air box 4, and the schematic diagram of the mixing air box 7 is no longer shown separately. The electric heating wire 17 of the mixing air box 7 is the same as the electric heating wire 17 of the atomizing assembly 15, and its power is low and the electric energy consumed is small. The humidifying air box 4 and the dehumidifying air box 5 are also equipped with a fan 14. The fan 14 in this embodiment adopts an axial flow fan 14. The air inlet and the air outlet of the volute 37 are respectively connected between the second on-off solenoid valve and the air outlet assembly 6, and the housing 12 is wrapped around the outside of the volute 37. The temperature and humidity sensor 13, the electric heating wire 17 and the fan 14 are all installed in the volute 37. The mixing bellows 7 has two functions: one is to further extend the mixed air path; the other is that the air temperature after passing through the humidifying bellows 4 and the dehumidifying bellows 5 may be slightly lower than the air temperature at the outlet of the indoor unit 2. After entering the mixing bellows 7, it is fine-tuned by the electric heating wire 17 to further improve the temperature and humidity control accuracy. Example
[0072] Embodiment 2 provides a temperature and humidity control method for a hospital operating room, which is based on the temperature and humidity control system for a hospital operating room of embodiment 1 and includes an internal circulation mode and an external circulation mode.
[0073] Select the internal circulation mode on the control panel corresponding to the control module 1, and set the temperature and humidity of the operating room. If the indoor temperature is lower than the set temperature, the outdoor unit 3 turns on the heating mode. Otherwise, the outdoor unit 3 turns on the cooling mode. The specific temperature and humidity adjustment method is as follows:
[0074] Step 1: Working principle of humidification bellows 4:
[0075] The return air of the operating room is cooled or heated through the indoor unit 2, and the two-position three-way solenoid valve 9 connects the indoor unit 2 and the humidification bellows 4. The temperature and humidity sensor 13 at the air inlet in the humidification bellows 4 feeds back the monitored temperature and humidity to the control module 1. If the monitored humidity value is less than the set humidity value, the ultrasonic atomizer 21 near the air inlet works to increase the air humidity. If the monitored humidity value is greater than the set humidity value, the ultrasonic atomizer 21 near the air inlet does not work.
[0076] Step 1 also involves the problem of temperature compensation, specifically: when the monitored humidity value is less than the set humidity value, if the monitored temperature value is greater than the set temperature value, the semiconductor cooling sheet 29 works to reduce the water temperature in the conical atomization shell 20; if the monitored temperature value is less than the set temperature value, the electric heating wire 17 works to increase the water temperature in the conical atomization shell 20. The liquid level sensor 23 monitors the water level in the conical atomization shell 20 in real time. When the water level in the conical atomization shell 20 is lower than the set water level, the water pump 26 replenishes the water in the water storage bottle 22 into the conical atomization shell 20; when the water level in the conical atomization shell 20 is higher than or equal to the set water level, the water pump 26 stops.
[0077] Step 2: Working principle of dehumidification bellows 5:
[0078] After the humidified air enters the dehumidification bellows 5, the temperature and humidity sensor 13 at the air inlet of the dehumidification bellows 5 will feed back the monitored temperature and humidity to the control module 1. According to the fed-back humidity value, the booster air pump 31 and the drying tank 32 of the drying assembly 16 close to the air inlet of the dehumidification bellows 5 work at an appropriate power. At the same time, the telescopic motor 36 of the corresponding gate assembly 33 drives the gate body 35 to be inserted into the corresponding slide groove, so that the air flows through the booster air pump 31 and the drying tank 32 in turn and then returns to the volute 37 of the dehumidification bellows 5. The temperature and humidity sensor 13 at the air outlet of the dehumidifying bellows 5 feeds back the monitored temperature and humidity to the control module 1. If the fed-back humidity value, if the positive and negative deviation between the monitored humidity value and the set humidity value is ≤2%, the dehumidified air enters the mixing bellows 7; if the positive and negative deviation between the monitored humidity value and the set humidity value is >2%, according to the feedback difference, the booster air pump 31 and the drying tank 32 of the drying assembly 16 close to the air outlet of the dehumidifying bellows 5 work at an appropriate power, and at the same time, the telescopic motor 36 of the corresponding gate assembly 33 drives the gate body 35 to be inserted into the corresponding slide groove, so that the air flows through the booster air pump 31 and the drying tank 32 in turn and then returns to the volute 37 of the dehumidifying bellows 5, and the air after two dehumidifications enters the mixing bellows 7.
[0079] The air after secondary humidification passes through the temperature and humidity sensor 13 at the outlet of the dehumidification bellows 5 and feeds back the monitored temperature and humidity to the control module 1. If the humidity value reaches the set humidity value, the control module 1 maintains the secondary humidification operation of step 2. However, if the humidity value is lower than the set humidity value, the control module 1 slowly increases the power of the booster pump 31 to increase the air flow rate, reduce the time the air stays in the drying tank 32, and slowly reduce the dehumidification effect until the feedback humidity value reaches the set humidity value. If the feedback humidity value still cannot be higher than the set humidity value after increasing the power of the booster pump 31, the booster pump 31 of the drying component 16 near the outlet of the dehumidification bellows 5 is closed, and the corresponding gate component 33 is opened at the same time, and only the drying component 16 at the air inlet of the dehumidification bellows 5 is kept working. By fine-tuning the air humidity in this way, the humidity control is more accurate, and the problem that the existing air conditioning system does not have a subsequent dehumidification remedial program is overcome.
[0080] Step 3: Working principle of mixing bellows 7:
[0081] The temperature and humidity sensor 13 in the middle of the mixing bellows 7 feeds back the monitored temperature and humidity to the control module 1. If the fed-back temperature value is less than the set temperature value, the electric heating wire 17 in the mixing bellows 7 heats the air to the set temperature value. The function of the mixing bellows 7 is: although the humidifying bellows 4 is provided with a semiconductor refrigeration sheet 29 and a radiator 30, the temperature change after humidification is reduced, and the sound insulation and heat preservation materials greatly reduce the heat transfer. However, after passing through the volute 37 of the humidifying bellows 4 and the volute 37 of the dehumidifying bellows 5 with a longer path, the air temperature does not drop by more than one degree Celsius. To address this problem, the electric heating wire 17 of the mixing bellows 7 heats the air, and the air after fine-tuning the temperature in the mixing bellows 7 passes through the high-efficiency filter of the air outlet assembly 6 and the operating room in turn, and then enters the indoor unit 2, thereby circulating internally.
[0082] From the above steps, it can be seen that temperature sensors are provided in the dehumidifying bellows 5, the humidifying bellows 4 and the mixing bellows 7. The humidity adjustment process and the final temperature fine-tuning process are all real-time feedback of temperature and humidity throughout the whole process. Compared with the collection method of only arranging temperature and humidity probes in the operating room to feedback the temperature and humidity values, the number of temperature and humidity monitoring feedback points is greater, and accordingly, the control of temperature and humidity is more accurate.
[0083] The temperature and humidity adjustment in the external circulation mode is the same as that in the internal circulation mode. Both are to select the internal / external circulation mode on the control panel corresponding to the control module 1, and set the temperature and humidity of the operating room. If the indoor temperature is lower than the set temperature, the external unit 3 turns on the heating mode. Otherwise, the external unit 3 turns on the cooling mode. The specific temperature and humidity adjustment method is as follows:
[0084] The control module 1 connects the external circulation air inlet and the external circulation air outlet of the indoor unit 2 to the fresh air duct respectively, and the external air of the fresh air duct enters the indoor unit 2. The temperature and humidity of the operating room are set on the control panel corresponding to the control module 1. The outdoor unit 3 turns on the cooling or heating mode, and adjusts the temperature and humidity of the air according to the temperature and humidity adjustment steps of the above-mentioned internal circulation mode. The return air passes through the external circulation air outlet of the indoor unit 2 and the fresh air duct in turn and is then discharged.
[0085] It should be understood that the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, some simple deductions or substitutions can be made without departing from the concept of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims
1. A temperature and humidity control system for a hospital operating room, comprising a control module and an indoor unit and an outdoor unit electrically connected to the control module, and the indoor unit and the outdoor unit are connected through a refrigerant circulation pipeline; Features: It also includes a humidifying bellows, a dehumidifying bellows and an air outlet assembly; The humidifying bellows, dehumidifying bellows, air outlet assembly and operating room are connected in sequence through ventilation ducts, the exhaust port of the operating room is connected with the internal circulation air inlet of the indoor unit, and the internal circulation air outlet of the indoor unit is connected with the air inlet of the humidifying bellows, thereby forming an internal air circulation; the external circulation air inlet and the external circulation air outlet of the indoor unit are respectively connected with the fresh air duct, thereby forming an external circulation; the air outlet of the humidifying bellows and the air outlet of the dehumidifying bellows are both provided with a one-way valve; The inner circulation air outlet of the indoor unit and the air inlet of the humidifying bellows are connected to the air inlet of the dehumidifying bellows through a ventilation duct provided with a two-position three-way solenoid valve, the ventilation duct between the one-way valve of the humidifying bellows and the air inlet of the dehumidifying bellows is provided with a first on-off solenoid valve, and the one-way valve of the dehumidifying bellows is connected to the one-way valve of the humidifying bellows through a ventilation duct provided with a second off-off solenoid valve; The humidifying bellows and the dehumidifying bellows both include a volute and a temperature and humidity sensor and a fan arranged in the volute. The volute of the humidifying bellows is provided with at least one atomizing assembly for atomizing water, and the volute of the dehumidifying bellows is provided with at least one group of drying assemblies for filtering moisture in the air; the atomizing assembly includes a conical atomizing shell and an ultrasonic atomizing sheet; the larger end of the conical atomizing shell is provided with an upward opening and the opening is connected to the bottom wall of the volute of the humidifying bellows, the ultrasonic atomizing sheet is installed at the bottom of the inner side of the conical atomizing shell, and the water at the bottom of the conical atomizing shell is atomized and discharged into the volute through the ultrasonic atomizing sheet; the atomizing assembly also includes a water storage bottle, a liquid level sensor, a refrigeration sheet assembly, an electric heating wire and a water pump, the water storage bottle is fixedly connected to the bottom of the conical atomizing shell, the liquid level sensor is installed in the conical atomizing shell, and the electric heating wire The hot wire is installed in the conical atomizing shell, and the water pump is installed in the water storage bottle, and the water in the water storage bottle is pumped into the conical atomizing shell by the water pump; the refrigeration plate assembly includes a semiconductor refrigeration plate and a radiator, the semiconductor refrigeration plate and the side wall of the conical atomizing shell are embedded, and the cooling surface of the semiconductor refrigeration plate is located inside the conical atomizing shell, and the heat dissipation surface of the semiconductor refrigeration plate is located outside the conical atomizing shell; the radiator is fixedly connected to the heat dissipation surface; the atomizing assembly is provided with two groups, one of which is close to the air inlet of the humidifying bellows, and the other is located in the middle of the volute of the humidifying bellows; three temperature and humidity sensors are provided in the volute of the humidifying bellows, two of which are respectively located at the air inlet and the air outlet of the humidifying bellows, and the other is located in the upwind area of the atomizing assembly in the middle of the volute; The drying assembly includes a booster air pump and a drying tank; the bottom wall of the volute of the dehumidifying bellows is provided with two adjacent interfaces, the air inlet end of the booster air pump is connected to one of the interfaces, the air outlet end of the booster air pump is connected to the air inlet end of the drying tank, and the air outlet end of the drying tank is connected to the other interface, and the air inlet end of the booster air pump is located in the upwind area of the air outlet end of the drying tank; A gate assembly is provided between two adjacent interfaces of the volute of the dehumidifying bellows; the gate assembly comprises a grooved slide rail, a gate body and a telescopic motor; there are two grooved slide rails, which are longitudinally fixed to the two side walls of the volute in a one-to-one correspondence, and the slide grooves of the grooved slide rails are opposite to each other; the top wall of the volute of the dehumidifying bellows is provided with a notch that is directly opposite to the grooved slide rail, and the gate body is inserted between the two slide grooves from the notch; the telescopic motor is longitudinally fixed to the outside of the top wall of the volute, and the telescopic rod of the telescopic motor is fixedly connected to the gate body, and the gate body is driven to descend by the telescopic motor, so that the gate body is inserted into the volute along the slide groove to block the air circulation between the two interfaces in the volute; The control module is electrically connected to the two-position three-way solenoid valve, the first on-off solenoid valve, the second on-off solenoid valve, all temperature and humidity sensors, all fans, the atomizing component and the drying component respectively.
2. A temperature and humidity control system for a hospital operating room according to claim 1, characterized in that: The drying components are provided with two groups, the two groups of drying components are respectively close to the air inlet and the air outlet of the volute of the dehumidifying wind box, and each group of drying components is provided with a corresponding gate assembly; The dehumidification bellows is provided with three temperature and humidity sensors, two of which are respectively located at the air inlet and the air outlet of the volute of the dehumidification bellows, and the other temperature and humidity sensor is located in the upwind area close to the air outlet of the volute.
3. A temperature and humidity control system for a hospital operating room according to claim 1 or 2, characterized in that: The humidifying bellows and the dehumidifying bellows both include an outer shell covering the outside of the volute, and the inside of the volute wall, the space between the volute wall and the adjacent volute wall, and between the volute and the corresponding outer shell are filled with sound insulation and heat preservation materials.
4. A temperature and humidity control system for a hospital operating room according to claim 2, characterized in that: It also includes a mixing bellows, which includes an outer shell, a volute, a temperature and humidity sensor, an electric heating wire and a fan; the air inlet and the air outlet of the volute are respectively connected between the second on-off solenoid valve and the air outlet assembly, the outer shell is wrapped around the outside of the volute, and the temperature and humidity sensor, the electric heating wire and the fan are all installed in the volute.
5. A temperature and humidity control method for a hospital operating room, characterized in that: The temperature and humidity control system for hospital operating rooms as described in claim 4 comprises the following steps: S1. In internal circulation mode, the control module connects the internal circulation air inlet and the internal circulation air outlet of the internal unit to the operating room and the two-position three-way solenoid valve respectively, sets the temperature and humidity of the operating room on the control panel corresponding to the control module, and turns on the cooling or heating mode of the external unit; S101. The return air of the operating room is cooled or heated by the indoor unit, and the two-position three-way solenoid valve connects the indoor unit and the humidification bellows. The temperature and humidity sensor at the air inlet in the humidification bellows feeds back the monitored temperature and humidity to the control module. If the monitored humidity value is less than the set humidity value, the ultrasonic atomizer sheet near the air inlet works to increase the air humidity; if the monitored humidity value is greater than the set humidity value, the ultrasonic atomizer sheet near the air inlet does not work; S1011. When the monitored humidity value is less than the set humidity value, if the monitored temperature value is greater than the set temperature value, the semiconductor refrigeration sheet works to reduce the water temperature in the conical atomization shell; if the monitored temperature value is less than the set temperature value, the electric heating wire works to increase the water temperature in the conical atomization shell; S1012. The liquid level sensor monitors the water level in the conical atomizer shell in real time. When the water level in the conical atomizer shell is lower than the set water level, the water pump replenishes the water in the water storage bottle into the conical atomizer shell; when the water level in the conical atomizer shell is higher than or equal to the set water level, the water pump stops; S102. The temperature and humidity sensor in the middle of the humidification bellows feeds back the monitored temperature and humidity to the control module. If the monitored humidity value is less than the set humidity value, the ultrasonic atomizer in the middle of the humidification bellows works to increase the air humidity; if the monitored humidity value is greater than the set humidity value, the ultrasonic atomizer in the middle of the humidification bellows does not work; S103. The temperature and humidity sensor at the air outlet of the humidification bellows feeds back the monitored temperature and humidity to the control module. If the positive and negative deviation between the monitored humidity value and the set humidity value is ≤2%, the second on-off solenoid valve opens, and the humidified air enters the mixing bellows; if the positive and negative deviation between the monitored humidity value and the set humidity value is >2%, the first on-off solenoid valve opens, and the humidified air enters the dehumidification bellows; S1031. After the humidified air enters the dehumidifying bellows, the temperature and humidity sensor at the air inlet of the dehumidifying bellows feeds back the monitored temperature and humidity to the control module. According to the fed-back humidity value, the booster air pump and the drying tank of the drying assembly near the air inlet of the dehumidifying bellows work at an appropriate power. At the same time, the telescopic motor of the corresponding gate assembly drives the gate body to be inserted into the corresponding slide slot, so that the air flows through the booster air pump and the drying tank in sequence and then returns to the volute of the dehumidifying bellows; S1032. The temperature and humidity sensor at the air outlet of the dehumidification bellows feeds back the monitored temperature and humidity to the control module. If the feedback humidity value, if the positive and negative deviation between the monitored humidity value and the set humidity value is ≤2%, the dehumidified air enters the mixing bellows; if the positive and negative deviation between the monitored humidity value and the set humidity value is >2%, according to the feedback difference, the booster air pump and the drying tank of the drying assembly near the air outlet of the dehumidification bellows work at an appropriate power, and at the same time, the telescopic motor of the corresponding gate assembly drives the gate body to be inserted into the corresponding slide slot, so that the air flows through the booster air pump and the drying tank in turn and then returns to the volute of the dehumidification bellows. The air after two dehumidifications enters the mixing bellows; S104. The temperature and humidity sensor in the middle of the mixing air box feeds back the monitored temperature and humidity to the control module. If the fed-back temperature value is less than the set temperature value, the electric heating wire in the mixing air box heats the air to the set temperature value; S105. The air after fine-tuning the temperature in the mixing air box passes through the high-efficiency filter of the air outlet assembly and the operating room in sequence, and then enters the indoor unit, thereby circulating internally; S2. External circulation mode: the control module connects the external circulation air inlet and the external circulation air outlet of the indoor unit to the fresh air duct respectively. The external air of the fresh air duct enters the indoor unit. The temperature and humidity of the operating room are set on the control panel corresponding to the control module. The outdoor unit starts the cooling or heating mode. The temperature and humidity of the air are adjusted according to S101-S105. The return air passes through the external circulation air outlet of the indoor unit and the fresh air duct in turn and is then discharged.