Heat recovery system applied to hospital room
By introducing fresh air handling units and multi-split air conditioning systems into hospital rooms, the waste heat and cold air from operating rooms and sterilization rooms can be effectively recovered and utilized, solving the problem of high energy consumption in hospital rooms and reducing energy consumption and costs.
Patent Information
- Application Number
- CN202423081814.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-13
AI Technical Summary
Hospital rooms such as operating rooms and sterilization rooms consume a lot of energy for heating or cooling, and waste heat and cold air cannot be effectively recovered and utilized, resulting in energy waste and increased costs.
The system employs a fresh air handling unit for the operating room, an exhaust fan, and a multi-split air conditioning system. The exhaust fan draws the cold air from the operating room into the machine room, and in winter, the waste heat from the multi-split air conditioning system is discharged into the heat exchanger to heat the fresh air. In summer, the waste heat is discharged outdoors or outside the machine room, and the low-temperature air inside the machine room is used for cooling, thereby improving the heat recovery and utilization rate.
It reduces the cooling energy consumption of multi-split systems, saves energy, improves heat recovery efficiency, reduces energy waste, and lowers costs.
Smart Images
Figure CN223537733U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heat recovery technology, and in particular to a heat recovery system for use in hospital buildings. Background Technology
[0002] Due to the special nature of hospital facilities, functional rooms such as operating rooms and sterilization rooms consume significant amounts of energy for heating and cooling, resulting in substantial energy waste. For example, the sterilization room, as an auxiliary room to the operating room, houses numerous medical devices that generate considerable heat. To ensure the proper functioning of these devices, the sterilization room requires year-round cooling. Currently, most sterilization rooms are cooled using multi-split air conditioning systems, with the indoor units installed inside and the outdoor units outdoors. The waste heat generated by these systems year-round remains unutilized. Furthermore, operating rooms require high-quality airflow and adequate ventilation. Currently, the cold air from the ventilation system is directly exhausted to the outside, leading to significant energy waste and increased costs. Therefore, improving the heat recovery and utilization rate of various functional rooms in hospitals and reducing energy waste has become a major challenge. Utility Model Content
[0003] This invention provides a heat recovery system for use in hospital rooms, which solves the problem of low heat recovery utilization rate and energy waste in various functional rooms of hospitals.
[0004] This utility model provides a heat recovery system for hospital rooms, including: a fresh air handling device for the operating room, an exhaust fan and a first multi-split unit, wherein the indoor units of the first multi-split unit are all installed in a first disinfection room and the outdoor unit of the first multi-split unit is installed in a first machine room;
[0005] The inlet of the exhaust fan is connected to the ventilation opening of the operating room, and the outlet of the exhaust fan is connected to the first machine room for supplying cool air to the first machine room in summer.
[0006] The fresh air handling unit for the operating room is installed in the second machine room, and the fresh air handling unit for the operating room includes a heat exchanger.
[0007] The outdoor unit of the first multi-split air conditioner is connected to a first exhaust duct at its air outlet. The outlet of the first exhaust duct is connected to the high-temperature side of the heat exchanger, which is used to discharge the waste heat of the outdoor unit into the heat exchanger during winter. A first solenoid valve is installed on the first exhaust duct.
[0008] According to the present invention, a heat recovery system for use in hospital buildings is provided, wherein the air outlet of the outdoor unit of the first multi-split air conditioner is connected to a second exhaust duct, the outlet of the second exhaust duct is connected to the outside, and is used to discharge the waste heat of the outdoor unit to the outside in summer. The second exhaust duct is equipped with a second solenoid valve.
[0009] According to the present invention, a heat recovery system for use in hospital rooms is provided, which also includes a second multi-split unit. The indoor units of the second multi-split unit are all installed in a second disinfection room, and the outdoor unit of the second multi-split unit is installed in the first machine room.
[0010] The outdoor unit of the second multi-split air conditioner is connected to a third exhaust duct, the outlet of which is connected to the second equipment room. This duct is used to discharge the waste heat from the outdoor unit of the second multi-split air conditioner into the second equipment room during winter. The third exhaust duct is equipped with a third solenoid valve.
[0011] According to the present invention, a heat recovery system for use in hospital buildings is provided, wherein the air outlet of the outdoor unit of the second multi-split air conditioner is connected to a fourth exhaust duct, the outlet of the fourth exhaust duct is connected to the outside, and is used to exhaust the waste heat of the outdoor unit of the second multi-split air conditioner to the outside in summer. The fourth exhaust duct is equipped with a fourth solenoid valve.
[0012] According to the present invention, a heat recovery system for use in hospital rooms is provided, which further includes a duct box, wherein the air outlets of the outdoor units of the first multi-split unit and the outdoor units of the second multi-split unit are covered by the duct box.
[0013] According to the present invention, a heat recovery system for use in hospital rooms is provided, which further includes a first ventilation pipe, which is connected to the interior of the second machine room and the outside, respectively, and a fifth solenoid valve is installed on the first ventilation pipe.
[0014] According to the present invention, a heat recovery system for use in hospital rooms is provided, which further includes a differential pressure sensor and a second ventilation duct. The differential pressure sensor is used to monitor the pressure difference between the inside and outside of the first machine room. The second ventilation duct is connected to the inside of the first machine room and the outside of the first machine room, respectively. A sixth solenoid valve is installed on the second ventilation duct. The differential pressure sensor and the sixth solenoid valve are communicatively connected.
[0015] According to the present invention, a heat recovery system for use in hospital rooms also includes a pressurizing fan, which is installed in the first exhaust duct.
[0016] According to the present invention, a heat recovery system for use in hospital rooms is provided, wherein the fresh air handling device for the operating room floor further includes a fresh air handling unit, the heat exchanger is used to preheat the fresh air, the heat exchanger is connected to the fresh air handling unit, and the fresh air handling unit is connected to the operating room floor.
[0017] According to the present invention, a heat recovery system for use in hospital rooms is provided, wherein the heat exchanger is a plate heat exchanger.
[0018] This utility model provides a heat recovery system for hospital rooms. A first multi-split air conditioning unit (VSU) is used to cool the first disinfection room year-round. The outdoor unit of the first VSU is installed in the first machine room. The inlet of the exhaust fan is connected to the ventilation opening of the operating room, and the outlet of the exhaust fan is connected to the first machine room. In summer, the exhaust fan draws cool air from the operating room ventilation opening into the first machine room, lowering the room temperature and ensuring a suitable temperature. Simultaneously, the first VSU utilizes the lower-temperature air in the first machine room for cooling, reducing its energy consumption. In winter, the waste heat generated by the first VSU is discharged into a heat exchanger through the first exhaust duct, serving as part of the heat source for heating the fresh air. This saves energy for the fresh air handling unit in the operating room, improves the waste heat utilization rate of the first VSU, avoids energy waste in various functional rooms of the hospital, enhances heat recovery efficiency, and saves costs. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the heat recovery system for hospital use provided by this utility model.
[0021] Figure label:
[0022] 1. Operating room fresh air handling unit; 11. Heat exchanger; 12. Fresh air handling unit;
[0023] 2. Exhaust fan; 3. First multi-split unit; 31. Indoor unit of the first multi-split unit; 32. Outdoor unit of the first multi-split unit;
[0024] 4. First exhaust duct; 41. First solenoid valve; 5. Second exhaust duct; 51. Second solenoid valve;
[0025] 6. Second multi-split air conditioner; 61. Indoor unit of the second multi-split air conditioner; 62. Outdoor unit of the second multi-split air conditioner;
[0026] 7. Third exhaust duct; 71. Third solenoid valve; 8. Fourth exhaust duct; 81. Fourth solenoid valve;
[0027] 9. Ductwork box; 10. First ventilation duct; 101. Fifth solenoid valve; 20. Differential pressure sensor; 30. Second ventilation duct; 301. Sixth solenoid valve; 40. Pressurized fan;
[0028] 100, First computer room; 200, Second computer room; 300, First disinfection room; 400, Second disinfection room. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0030] The terms "first" and "second" in the specification and claims of this utility model may explicitly or implicitly include one or more of the features. In the description of this utility model, unless otherwise stated, "multiple" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0033] The following is combined with Figure 1 The present invention provides a detailed description of a heat recovery system for hospital use, through specific embodiments and application scenarios.
[0034] like Figure 1 As shown, this utility model provides a heat recovery system for hospital rooms, including: a fresh air handling unit 1 for the operating room, an exhaust fan 2, and a first multi-split unit 3. The indoor units 31 of the first multi-split unit are all installed inside a first disinfection room 300. The outdoor unit 32 of the first multi-split unit is installed inside a first machine room 100.
[0035] The inlet of the exhaust fan 2 is connected to the ventilation opening of the operating room, and the outlet of the exhaust fan 2 is connected to the first machine room 100, which is used to supply cool air to the first machine room 100 in summer.
[0036] The fresh air handling unit 1 for the operating room is installed in the second machine room 200. The fresh air handling unit 1 for the operating room includes a heat exchanger 11.
[0037] The outdoor unit 32 of the first multi-split air conditioner is connected to the air outlet of the first exhaust duct 4. The outlet of the first exhaust duct 4 is connected to the high-temperature side of the heat exchanger 11, which is used to discharge the waste heat of the outdoor unit into the heat exchanger 11 in winter. The first exhaust duct 4 is equipped with a first solenoid valve 41.
[0038] Understandably, the surgical ventilation system is used to heat or cool fresh air to supply hot or cold air to each operating room on the surgical floor. The surgical floor contains a large number of medical devices and occupies a significant area, necessitating a dedicated equipment floor to house the operating room ventilation systems, electrical distribution boxes, air purification units, humidifiers, and other equipment. The equipment floor also experiences heat load requirements in winter, requiring heating equipment such as radiators or fan coil units to ensure a suitable indoor temperature during winter, thus facilitating equipment operation and personnel maintenance.
[0039] The central sterilization supply center is ancillary to the operating rooms, responsible for the cleaning, packaging, sterilization, and supply of medical equipment. For example... Figure 1As shown, the central sterilization supply layer is located on the floor below the operating room, and the first sterilization chamber 300 is located on the central sterilization supply layer. The first sterilization chamber 300 contains several pieces of equipment, such as a steam generator, a high-temperature sterilizer, a cleaning and sterilizing machine, and a drying cabinet. These devices emit a large amount of heat into the room. To ensure the effective operation of these devices, the first sterilization chamber 300 needs to be cooled year-round to meet the usage requirements of the equipment; therefore, the cooling energy consumption of the first sterilization chamber 300 is relatively high. The indoor units 31 of the first multi-split air conditioning system are all installed in the first sterilization chamber 300 to provide year-round cooling for the first sterilization chamber 300.
[0040] like Figure 1 As shown, the equipment floor is located on the floor above the operating room floor. A partition wall can be used to divide the equipment floor into a first equipment room 100 and a second equipment room 200. The outdoor unit 32 of the first multi-split air conditioning unit is installed in the first equipment room 100. The operating room fresh air handling unit, electrical distribution box, air purification unit, humidifier, and other equipment are all installed in the second equipment room 200. Ventilation openings are provided on the operating floor to ensure air circulation within the operating room.
[0041] like Figure 1 As shown, exhaust fan 2 is installed in the second machine room 200. Exhaust fan 2 is connected to a vent via pipes, and its outlet is connected to the first machine room 100 via pipes. This allows the exhaust fan 2 to draw cold air from the operating room vents into the first machine room 100, providing a cooling source. Consequently, the indoor temperature of the first machine room 100 decreases, and the first multi-split unit 3 utilizes the lower temperature air in the first machine room 100 for cooling, reducing its energy consumption and improving its cooling effect. Simultaneously, the exhaust fan 2's drawing of cold air from the operating room vents into the first machine room 100 enhances the comfort of maintenance personnel.
[0042] like Figure 1 As shown, the inlet of the first exhaust duct 4 is connected to the air outlet of the outdoor unit 32 of the first multi-split air conditioner, and the outlet of the first exhaust duct 4 is connected to the heat exchanger 11 in the second machine room 200. In winter, the first solenoid valve 41 is opened, and the waste heat discharged by the outdoor unit 32 of the first multi-split air conditioner is discharged into the heat exchanger 11 through the first exhaust duct 4. The waste heat discharged by the outdoor unit 32 of the first multi-split air conditioner serves as part of the heat source for the heat exchanger 11 to heat the fresh air, thereby saving energy consumption of the operating room fresh air handling unit 1 and improving the waste heat utilization rate of the first multi-split air conditioner 3.
[0043] This utility model provides a heat recovery system for hospital rooms. A first multi-split unit 3 is used to cool the first disinfection room 300 year-round. The outdoor unit 32 of the first multi-split unit is installed in the first machine room 100. The inlet of the exhaust fan 2 is connected to the ventilation opening of the operating room, and the outlet of the exhaust fan 2 is connected to the first machine room 100. In summer, the exhaust fan 2 draws cold air from the ventilation opening of the operating room into the first machine room 100, lowering the room temperature and ensuring a suitable temperature. At the same time, the first multi-split unit 3 can utilize the lower temperature air in the first machine room 100 for cooling, reducing the energy consumption of the first multi-split unit 3. In winter, the waste heat generated by the first multi-split unit 3 is discharged into the heat exchanger 11 through the first exhaust duct 4, serving as the heat source for the heat exchanger 11 to heat the fresh air. This saves energy consumption of the fresh air handling device 1 in the operating room, improves the waste heat utilization rate of the first multi-split unit 3, avoids energy waste in various functional rooms of the hospital, improves the heat recovery utilization rate, and saves costs.
[0044] Furthermore, such as Figure 1 As shown, the air outlet of the outdoor unit 32 of the first multi-split unit is also connected to a second exhaust duct 5. The outlet of the second exhaust duct 5 is connected to the outside, and is used to exhaust the waste heat of the outdoor unit to the outside during the summer. A second solenoid valve 51 is installed in the second exhaust duct 5.
[0045] Specifically, when the first multi-split unit 3 is running, its outdoor unit will discharge a significant amount of waste heat. In summer, the second solenoid valve 51 is opened and the first solenoid valve 41 is closed, allowing the waste heat generated by the outdoor unit 32 of the first multi-split unit to be discharged outdoors through the second exhaust duct 5, preventing excessively high indoor temperatures in the first machine room 100 and ensuring the cooling effect of the first multi-split unit 3. In winter, the first solenoid valve 41 is opened and the second solenoid valve 51 is closed, allowing the waste heat discharged by the outdoor unit 32 of the first multi-split unit to be discharged into the heat exchanger 11 through the first exhaust duct 4.
[0046] In some embodiments, such as Figure 1 As shown, the heat recovery system applied to hospital rooms also includes a second multi-split unit 6. The indoor units 61 of the second multi-split unit are all installed inside the second disinfection room 400. The outdoor unit 62 of the second multi-split unit is installed inside the first machine room 100.
[0047] The outdoor unit 62 of the second multi-split air conditioner is connected to a third exhaust duct 7. The outlet of the third exhaust duct 7 is connected to the second equipment room 200, which is used to exhaust the waste heat of the outdoor unit into the second equipment room 200 during winter. The third exhaust duct 7 is equipped with a third solenoid valve 71.
[0048] Specifically, such as Figure 1 As shown, the disinfection supply center also includes a second disinfection chamber 400. Similar to the first disinfection chamber 300, the second disinfection chamber 400 also requires year-round cooling. A second multi-split unit 6 is used to provide year-round cooling for the second disinfection chamber 400.
[0049] In this embodiment, during summer, the third solenoid valve 71 is closed to prevent waste heat discharged from the outdoor unit 62 of the second multi-split unit from entering the second machine room 200. The cool air discharged from the operating room ventilation vents is drawn into the first machine room 100 by the exhaust fan 2. The first multi-split unit 3 and the second multi-split unit 6 utilize the lower temperature air in the first machine room 100 for cooling, reducing the cooling energy consumption of the first multi-split unit 3 and the second multi-split unit 6 and improving their cooling effect.
[0050] In winter, the third solenoid valve 71 is opened. The inlet of the third exhaust duct 7 is connected to the air outlet of the outdoor unit 62 of the second multi-split air conditioner, and the outlet of the third exhaust duct 7 is connected to the second equipment room 200. The waste heat discharged by the outdoor unit 62 of the second multi-split air conditioner is discharged into the second equipment room 200 through the third exhaust duct 7, increasing the indoor temperature of the second equipment room 200, thus providing favorable conditions for a suitable indoor temperature in the second equipment room 200, and ensuring the effective operation of the equipment in the second equipment room 200.
[0051] In some embodiments, such as Figure 1 As shown, the air outlet of the outdoor unit 62 of the second multi-split unit is also connected to a fourth exhaust duct 8. The outlet of the fourth exhaust duct 8 is connected to the outside, and is used to exhaust the waste heat of the outdoor unit 62 of the second multi-split unit to the outside during the summer. A fourth solenoid valve 81 is installed in the fourth exhaust duct 8.
[0052] Specifically, when the second multi-split unit 6 is running, its outdoor unit discharges a significant amount of waste heat. In summer, the fourth solenoid valve 81 is opened and the third solenoid valve 71 is closed, allowing the waste heat generated by the outdoor unit 62 of the second multi-split unit to be discharged outdoors through the fourth exhaust duct 8. This prevents the indoor temperature of the first machine room 100 from becoming too high and prevents the waste heat discharged by the outdoor unit 62 of the second multi-split unit from entering the second machine room 200, ensuring that the second multi-split unit 6 and the first multi-split unit 3 have optimal cooling performance.
[0053] In winter, open the third solenoid valve 71 and close the fourth solenoid valve 81 to introduce the waste heat of the second multi-split unit 6 into the second machine room 200.
[0054] In some embodiments, such as Figure 1 As shown, the heat recovery system applied to hospital rooms also includes a duct box 9. The air outlets of the outdoor unit 32 of the first multi-split unit and the outdoor unit 62 of the second multi-split unit are both covered with duct boxes 9.
[0055] Specifically, such as Figure 1As shown, the first row of air ducts 4 and the second row of air ducts 5 are respectively connected to the air duct box 9 covering the outdoor unit 32 of the first multi-split unit, and the third row of air ducts 7 and the fourth row of air ducts 8 are respectively connected to the air duct box 9 covering the outdoor unit 62 of the second multi-split unit, so as to collect the waste heat gas discharged by the outdoor unit 32 of the first multi-split unit or the outdoor unit 62 of the second multi-split unit through the air duct box 9, prevent the waste heat gas from leaking out, and ensure that the entire heat recovery system has a relatively sufficient heat recovery capacity.
[0056] In some embodiments, such as Figure 1 As shown, the heat recovery system applied to hospital rooms also includes a first ventilation duct 10. The first ventilation duct 10 is connected to both the interior of the second machine room 200 and the outside. A fifth solenoid valve 101 is installed on the first ventilation duct 10.
[0057] Understandably, the third exhaust duct 7 discharges the waste heat generated by the second multi-split unit 6 to the second machine room 200, which may cause an imbalance in the airflow within the second machine room 200. Opening the fifth solenoid valve 101 on the first ventilation duct 10 connects the second machine room 200 to the outside world through the first ventilation duct 10, thus maintaining the airflow balance within the second machine room 200.
[0058] In some embodiments, such as Figure 1 As shown, the heat recovery system applied to hospital rooms also includes a differential pressure sensor 20 and a second ventilation duct 30. The differential pressure sensor 20 is used to monitor the pressure difference between the inside and outside of the first machine room 100. The second ventilation duct 30 is connected to both the inside and outside of the first machine room 100. A sixth solenoid valve 301 is installed on the second ventilation duct 30. The differential pressure sensor 20 and the sixth solenoid valve 301 are communicatively connected.
[0059] Understandably, the fact that exhaust fan 2 supplies lower-temperature air into the first machine room 100 may cause an imbalance in airflow within the first machine room 100. Specifically, such as... Figure 1 As shown, the exterior wall of the first equipment room 100 has mounting holes. A differential pressure sensor 20 is installed at the mounting holes to detect the pressure difference between the inside of the first equipment room 100 and the outside. The differential pressure sensor 20 is communicatively connected to the controller of the entire heat recovery system, and the controller is communicatively connected to the sixth solenoid valve 301. When the controller determines that the current pressure inside the first equipment room 100 exceeds the preset differential pressure, the controller controls the sixth solenoid valve 301 to open, connecting the first equipment room 100 to the outside through the second ventilation pipe 30, thereby gradually restoring the pressure inside the first equipment room 100 to atmospheric pressure, ensuring the normal operation of all equipment inside the first equipment room 100. Users can also control the opening and closing of the sixth solenoid valve 301 according to actual needs to ensure the supply of fresh air inside the first equipment room 100 and ensure air circulation within the first equipment room 100.
[0060] In some embodiments, such as Figure 1As shown, the heat recovery system applied to hospital rooms also includes a pressurized fan 40. The pressurized fan 40 is installed in the first exhaust duct 4. By overcoming the resistance of the first exhaust duct 4 and the heat exchanger 11, the pressurized fan 40 ensures that the waste heat generated by the outdoor unit 32 of the first multi-split unit can be smoothly discharged into the heat exchanger 11.
[0061] like Figure 1 As shown, the fresh air handling unit 1 for the operating room also includes a fresh air handling unit 12. A heat exchanger 11 is used to preheat the fresh air. The heat exchanger 11 is connected to the fresh air handling unit 12, which is connected to the air supply unit, which is connected to the operating room.
[0062] Specifically, heat exchanger 11 recovers heat to preheat fresh air. The outlet of heat exchanger 11 is connected to fresh air handling unit 12 for secondary treatment of the fresh air. Fresh air handling unit 12 includes heating equipment, cooling equipment, and filtration equipment, which are existing technologies and are not specifically limited. The fresh air treated by fresh air handling unit 12 is then delivered to each operating room in the operating room floor by air supply units to ensure heating and cooling in each operating room. The air supply units can be air conditioning air supply units or cleanroom air supply units, which are existing technologies and are not specifically limited.
[0063] Optionally, heat exchanger 11 is a plate heat exchanger. Alternatively, heat exchanger is a heat pipe heat exchanger.
[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A heat recovery system for use in hospital buildings, characterized in that, include: The operating room includes a fresh air handling unit, an exhaust fan, and a first multi-split unit. The indoor units of the first multi-split unit are all installed in the first disinfection room, and the outdoor units of the first multi-split unit are installed in the first machine room. The inlet of the exhaust fan is connected to the ventilation opening of the operating room, and the outlet of the exhaust fan is connected to the first machine room for supplying cool air to the first machine room in summer. The fresh air handling unit for the operating room is installed in the second machine room, and the fresh air handling unit for the operating room includes a heat exchanger. The outdoor unit of the first multi-split air conditioner is connected to a first exhaust duct at its air outlet. The outlet of the first exhaust duct is connected to the high-temperature side of the heat exchanger, which is used to discharge the waste heat of the outdoor unit into the heat exchanger during winter. A first solenoid valve is installed on the first exhaust duct.
2. The heat recovery system for hospital rooms according to claim 1, characterized in that, The outdoor unit of the first multi-split air conditioner is also connected to a second exhaust duct. The outlet of the second exhaust duct is connected to the outside and is used to exhaust the waste heat of the outdoor unit to the outside in summer. The second exhaust duct is equipped with a second solenoid valve.
3. The heat recovery system for hospital rooms according to claim 1, characterized in that, It also includes a second multi-split air conditioner, the indoor units of which are all installed in the second disinfection room, and the outdoor units of which are installed in the first machine room; The outdoor unit of the second multi-split air conditioner is connected to a third exhaust duct, the outlet of which is connected to the second equipment room. This duct is used to discharge the waste heat from the outdoor unit of the second multi-split air conditioner into the second equipment room during winter. The third exhaust duct is equipped with a third solenoid valve.
4. The heat recovery system for hospital rooms according to claim 3, characterized in that, The outdoor unit of the second multi-split air conditioner is also connected to a fourth exhaust duct. The outlet of the fourth exhaust duct is connected to the outside and is used to exhaust the waste heat of the outdoor unit of the second multi-split air conditioner to the outside in summer. The fourth exhaust duct is equipped with a fourth solenoid valve.
5. The heat recovery system for hospital rooms according to claim 3 or 4, characterized in that, It also includes a duct box, and the air outlets of the outdoor units of the first multi-split unit and the second multi-split unit are covered by the duct box.
6. The heat recovery system for hospital rooms according to claim 3, characterized in that, It also includes a first ventilation duct, which is connected to the interior of the second machine room and the outside, and the first ventilation duct is equipped with a fifth solenoid valve.
7. The heat recovery system for hospital rooms according to claim 1, characterized in that, It also includes a differential pressure sensor and a second ventilation duct. The differential pressure sensor is used to monitor the pressure difference between the first machine room and the outside. The second ventilation duct is connected to the inside of the first machine room and the outside, respectively. The second ventilation duct is equipped with a sixth solenoid valve. The differential pressure sensor and the sixth solenoid valve are communicatively connected.
8. The heat recovery system for hospital rooms according to claim 1, characterized in that, It also includes a pressurizing fan, which is installed in the first exhaust duct.
9. The heat recovery system for hospital rooms according to claim 1, characterized in that, The fresh air handling device for the operating room also includes a fresh air handling unit. The heat exchanger is used to preheat the fresh air. The heat exchanger is connected to the fresh air handling unit, and the fresh air handling unit is connected to the operating room.
10. The heat recovery system for hospital rooms according to claim 1, characterized in that, The heat exchanger is a plate heat exchanger.