CN114135948A - Air conditioning system for cardiac surgery operating room and control method thereof - Google Patents
Air conditioning system for cardiac surgery operating room and control method thereof Download PDFInfo
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- CN114135948A CN114135948A CN202111421485.8A CN202111421485A CN114135948A CN 114135948 A CN114135948 A CN 114135948A CN 202111421485 A CN202111421485 A CN 202111421485A CN 114135948 A CN114135948 A CN 114135948A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 129
- 238000007675 cardiac surgery Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims description 47
- 238000003303 reheating Methods 0.000 claims description 42
- 238000001816 cooling Methods 0.000 claims description 34
- 238000005057 refrigeration Methods 0.000 claims description 14
- 238000007791 dehumidification Methods 0.000 claims description 10
- 230000000747 cardiac effect Effects 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 4
- 238000010257 thawing Methods 0.000 abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 230000003247 decreasing effect Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 206010002091 Anaesthesia Diseases 0.000 description 2
- 208000024172 Cardiovascular disease Diseases 0.000 description 2
- 230000037005 anaesthesia Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000036760 body temperature Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 230000004060 metabolic process Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000000451 tissue damage Effects 0.000 description 2
- 231100000827 tissue damage Toxicity 0.000 description 2
- 208000017667 Chronic Disease Diseases 0.000 description 1
- 206010019280 Heart failures Diseases 0.000 description 1
- 206010020772 Hypertension Diseases 0.000 description 1
- 208000029078 coronary artery disease Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000004217 heart function Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
- F24F3/065—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units with a plurality of evaporators or condensers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
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Abstract
The invention discloses an air conditioning system for a cardiac surgery operating room and a control method thereof, relates to the technical field of air conditioners, and solves the problem that a direct expansion air conditioning system in the prior art needs to be stopped for defrosting in winter. The air conditioning system comprises a cold and heat source assembly and a combined air conditioning unit, wherein the cold and heat source assembly at least comprises a first cold and heat source and a second cold and heat source, the combined air conditioning unit at least comprises a first direct expansion coil pipe and a second direct expansion coil pipe, the first cold and heat source is connected with the first direct expansion coil pipe, the second cold and heat source is connected with the second direct expansion coil pipe, based on the operation mode and the operation working condition of the air conditioning system, at least one of the first cold and heat source and the second cold and heat source is in an operation state, and at least one of the first direct expansion coil pipe and the second direct expansion coil pipe is in an operation state, so that air passing through the combined air conditioning unit reaches a preset temperature and a preset humidity and then is sent into a room. In winter, the two cold and heat sources of the air conditioning system are alternately used, so that the stability of the humidity of the room temperature of the operation can be maintained.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioning system for a cardiac surgery operating room and a control method thereof.
Background
Currently, cardiovascular diseases have become the first major chronic disease with high mortality, high disability rate and high medical costs, including coronary heart disease, hypertension, heart failure, etc. The treatment of cardiovascular diseases today includes coronary intervention stents and surgical bypass surgery, and there is an increasing need for operating rooms capable of performing cardiac surgery.
According to the actual medical requirements, extracorporeal circulation is needed to be established for a patient during the cardiac surgery, so that the extracorporeal circulation pump is used for temporarily replacing the cardiac function during the operation. In the process of establishing extracorporeal circulation for a patient, the patient needs to be subjected to low-temperature anesthesia, and meanwhile, the operating room needs to be cooled as soon as possible, so that the indoor temperature is 16 ℃ and the humidity is 60%, and the basic metabolism and the tissue damage of the patient are reduced as far as possible. After the extracorporeal circulation is cancelled, the operating room needs to be heated rapidly, the indoor temperature is 22-26 ℃, the humidity is 55%, and the normal body temperature of the human body is recovered rapidly. After the operation, the room temperature was raised to 29 ℃ and maintained at 29 ℃ when the chest was sutured. The temperature of the wound is recovered to 22-25 ℃ after the wound is sutured. It can be seen that the air conditioning system for the cardiac surgery operating room not only needs to rapidly cool and heat, but also needs to be operated stably and reliably throughout the year.
In the prior art, air conditioning systems used in cardiac surgery operating rooms include water systems, direct expansion air conditioning systems and water systems plus a hot section air conditioning system. However, the applicant has found that the above three systems respectively have the following disadvantages: (1) the air outlet temperature at the tail end of the air conditioner of the water system is high, the indoor temperature is cooled to 16 ℃, the required time is long, and the requirement of rapid cooling cannot be met; on the other hand, the water system can not be opened in a low-temperature environment, and the accuracy of the temperature and the humidity in the operating room can not be ensured. (2) The air outlet temperature of the direct expansion air conditioning system can reach 13-14 ℃ at least, the rapid cooling function can be realized, but the direct expansion air conditioning external unit is an air cooling external unit and only has one air cooling external unit, when the direct expansion air conditioning external unit operates in a heating mode in winter, fins of the external unit can freeze, the heat exchange efficiency of the air conditioner is reduced, and when the freezing rate reaches a safety value set by the machine, the unit needs to operate in a defrosting mode. When the unit operates in the defrosting mode, the heating mode is stopped, the air conditioning system compresses a refrigerant by using the compressor, so that the refrigerant is changed into high-temperature and high-pressure gas for defrosting, and the heating mode can be continuously operated after defrosting is finished. However, during the operation, the air conditioning system needs to be kept in an operating state all the time, so that the direct expansion air conditioning system has the problem of defrosting and stopping due to the outdoor unit in winter, the stability of the temperature and humidity in the operating room is affected, and the requirement of the air conditioning in the cardiac surgery operating room cannot be met. (3) Besides the fact that the air conditioning system of the reheating section of the water system cannot rapidly increase and decrease the temperature, the reheating section used by the air conditioning system generally adopts electric heating, and the air conditioning system also has the defects of high cost and narrow adjusting range.
Therefore, it is urgently needed to provide an air conditioning system for a cardiac surgical operating room and a control method thereof.
Disclosure of Invention
One of the purposes of the present invention is to provide an air conditioning system for a cardiac surgery operating room and a control method thereof, which solve the technical problem that when a direct-expansion air conditioning system in the prior art is used in a cardiac surgery operating room, the direct-expansion air conditioning system needs to be stopped for defrosting in winter, and the humidity stability of the room temperature of the cardiac surgery operation is affected. The various technical effects that can be produced by the preferred technical solution of the present invention are described in detail below.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention relates to an air conditioning system for a cardiac surgery operating room, which comprises a cold and heat source assembly and a combined air conditioning unit, wherein the cold and heat source assembly at least comprises a first cold and heat source and a second cold and heat source, the combined air conditioning unit at least comprises a first direct expansion coil pipe and a second direct expansion coil pipe, the first cold and heat source is connected with the first direct expansion coil pipe, the second cold and heat source is connected with the second direct expansion coil pipe, based on the operation mode and the operation working condition of the air conditioning system, at least one of the first cold and heat source and the second cold and heat source is in an operation state, and at least one of the first direct expansion coil pipe and the second direct expansion coil pipe is in an operation state, so that air passing through the combined air conditioning unit reaches a preset temperature and a preset humidity and then is sent into a room.
According to a preferred embodiment, the combined air conditioning unit further includes a reheating section connected to the first direct expansion coil and the second direct expansion coil, and the reheating section is used for heating air passing through the first direct expansion coil or the second direct expansion coil.
According to a preferred embodiment, the combined air conditioning unit further comprises a humidification section connected to the reheating section and configured to humidify air passing through the reheating section.
According to a preferred embodiment, the first cold and heat source and the second cold and heat source are both multi-split outdoor units.
According to the control method of the air conditioning system for the cardiac surgery operating room, based on the operation mode and the operation working condition of the air conditioning system, the operation states of the first cold and heat source and the second cold and heat source are controlled, the operation states of the first direct expansion coil and the second direct expansion coil are controlled, and air passing through the combined air conditioning unit is sent into the room after reaching the preset temperature and the preset humidity.
According to a preferred embodiment, when the air conditioning system operates in the cooling mode, based on an operating condition of the air conditioning system, at least one of the first cold and heat source and the second cold and heat source is controlled to be in a cooling state, at the same time, at least one of the first direct expansion coil and the second direct expansion coil is controlled to be in a cooling and dehumidifying state, and air cooled and dehumidified by the first direct expansion coil or the second direct expansion coil is heated by the reheating section to reach a preset temperature and a preset humidity.
According to a preferred embodiment, when the air conditioning system is in a low-temperature working condition, the first cold and heat source and the second cold and heat source are both in a refrigeration state, the first direct expansion coil and the second direct expansion coil are both in a refrigeration and dehumidification state, and the air which is refrigerated and dehumidified by the second direct expansion coil is heated by the reheating section to reach a preset temperature and a preset humidity.
According to a preferred embodiment, when the air conditioning system is in a normal temperature condition, one of the first cold and heat source and the second cold and heat source is in a cooling state, and the other one of the first cold and heat source and the second cold and heat source is in a closed state; meanwhile, one of the first direct expansion coil and the second direct expansion coil, which is connected with a cold and heat source in a refrigerating state, is in a refrigerating and dehumidifying state, and the other one is in a closing state; and the air which is refrigerated and dehumidified by the first direct expansion coil or the second direct expansion coil is heated by the reheating section to reach the preset temperature and the preset humidity.
According to a preferred embodiment, when the air conditioning system is in a high-temperature working condition, the first cold and heat source is in a cooling state, and the second cold and heat source is in a heating state; the first direct expansion coil is in a refrigeration and dehumidification state, and the second direct expansion coil is in a heating state; and the air which is refrigerated and dehumidified by the first direct expansion coil and heated by the second direct expansion coil is heated by the reheating section to reach the preset temperature.
According to a preferred embodiment, when the air conditioning system operates in the heating mode, the first cold and heat source and the second cold and heat source are controlled to be alternately in the heating state in a linkage control manner, one of the first direct expansion coil and the second direct expansion coil connected to the cold and heat source in the heating state is controlled to be in the heating state, and air heated by the first direct expansion coil or the second direct expansion coil is humidified by the reheating section heating and humidifying section to reach a preset temperature and a preset humidity.
According to a preferred embodiment, the first cold heat source and the second cold heat source are alternately operated every 3 to 5 hours.
According to a preferred embodiment, when the first cold heat source and the second cold heat source exchange operation states, one of the first cold heat source and the second cold heat source decreases in frequency, the other one increases in frequency, and a preset temperature is maintained in a room.
The air conditioning system for the cardiac surgery operating room and the control method thereof provided by the invention at least have the following beneficial technical effects:
the invention relates to an air conditioning system for a cardiac surgery operating room, which comprises a cold and heat source component and a combined air conditioning unit, wherein on one hand, the cold and heat source component at least comprises a first cold and heat source and a second cold and heat source, the first cold and heat source and the second cold and heat source are mutually standby in winter and can be used alternately, namely when one cold and heat source needs to be shut down for defrosting, the standby cold and heat source can be started to maintain the stability of the room temperature and humidity of the cardiac surgery operating room, the stable operation of the air conditioning system all the year around is ensured, and the technical problem that the heating mode needs to be stopped when a direct expansion air conditioning system in the prior art is provided with only one external unit and the unit operates in the defrosting mode, so that the stability of the temperature and the humidity in the cardiac surgery operating room is influenced is solved; on the other hand, the combined air conditioning unit at least comprises a first direct expansion coil and a second direct expansion coil, and the combined air conditioning unit can realize rapid temperature rise and temperature fall through the action of the first direct expansion coil and/or the second direct expansion coil and timely respond to the requirement of a cardiac surgery operating room on temperature and humidity.
According to the control method for the air conditioning system of the cardiac surgery operating room, based on the operation mode and the operation working condition of the air conditioning system, the operation states of a first cold and heat source and a second cold and heat source are controlled, the operation states of a first direct expansion coil and a second direct expansion coil are controlled at the same time, air passing through a combined air conditioning unit reaches a preset temperature and a preset humidity and then is sent into the room, and in winter, the control method can maintain the stability of the humidity of the room temperature of the cardiac surgery operating room by enabling the two cold and heat sources to be alternately used; on the other hand, the method can also rapidly heat up and cool down, and timely respond to the requirements of the heart surgery operating room on temperature and humidity.
The air conditioning system for the cardiac surgery operating room and the control method thereof solve the technical problems that when the direct expansion air conditioning system in the prior art is used for the cardiac surgery operating room, the direct expansion air conditioning system needs to be stopped for defrosting in winter, and the humidity stability of the room temperature of the cardiac surgery operation is influenced; simultaneously still solved the technical problem that the water system air conditioner among the prior art can not fast go up and down and the water system air conditioner can't open under low temperature environment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a block schematic diagram of an air conditioning system for a cardiac surgical operating room of the present invention.
In the figure: 101. a first cold heat source; 102. a second cold heat source; 201. a first direct expansion coil; 202. a second direct expansion coil; 203. a reheating section; 204. a humidification stage; 205. a wind mixing section; 206. a filtration section; 207. an air supply section; 208. a high efficiency filter; 30. and (4) indoor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
The air conditioning system for cardiac surgery room and the control method thereof according to the present invention will be described in detail with reference to the accompanying drawings 1 and embodiments 1 and 2.
Example 1
This embodiment will explain the air conditioning system for cardiac surgery operating room of the present invention in detail.
The embodiment is an air conditioning system for a cardiac surgical operating room, which comprises a cold and hot water source component and a combined air conditioning unit. Preferably, the cooling and heating source assembly at least includes a first cooling and heating source 101 and a second cooling and heating source 102, the combined air conditioning unit at least includes a first direct expansion coil 201 and a second direct expansion coil 202, the first cooling and heating source 101 is connected to the first direct expansion coil 201, and the second cooling and heating source 102 is connected to the second direct expansion coil 202, as shown in fig. 1. More preferably, based on the operation mode and the operation condition of the air conditioning system, at least one of the first cold heat source 101 and the second cold heat source 102 is in an operation state, and at least one of the first direct expansion coil 201 and the second direct expansion coil 202 is in an operation state, so that the air passing through the combined air conditioning unit reaches a preset temperature and a preset humidity and is then delivered into the room 30.
On one hand, the cold and heat source assembly of the present embodiment at least comprises a first cold and heat source 101 and a second cold and heat source 102, and in winter, the first cold and heat source 101 and the second cold and heat source 102 are mutually standby and can be used alternately, that is, when one of the cold and heat sources needs to be stopped for defrosting, the standby cold and heat source can be activated to maintain the stability of the room temperature and humidity of the cardiac surgery, thereby avoiding the technical problem that the heating mode needs to be stopped when the direct expansion air conditioning system in the prior art only has an external unit and the unit operates in the defrosting mode, so as to affect the stability of the temperature and humidity in the cardiac surgery room; on the other hand, the combined air conditioning unit of the embodiment at least comprises the first direct expansion coil 201 and the second direct expansion coil 202, and the first direct expansion coil 201 and/or the second direct expansion coil 202 can realize rapid temperature rise and temperature fall and timely respond to the requirement of the cardiac surgery operating room on temperature and humidity. The air conditioning system for the cardiac surgery operating room solves the technical problem that when the direct-expansion air conditioning system in the prior art is used for the cardiac surgery operating room, the direct-expansion air conditioning system needs to be stopped for defrosting in winter, and the humidity stability of the room temperature of the cardiac surgery operation is affected; simultaneously still solved the technical problem that the water system air conditioner among the prior art can not fast go up and down and the water system air conditioner can't open under low temperature environment.
According to a preferred embodiment, the combined air conditioning unit further comprises a reheating section 203, as shown in fig. 1. Preferably, the reheating section 203 is connected to the first direct expansion coil 201 and the second direct expansion coil 202, and the reheating section 203 is used for heating air passing through the first direct expansion coil 201 or the second direct expansion coil 202. The reheating section 203 is, for example, an electric heating device. The combined air conditioning unit of the preferred technical scheme of this embodiment further includes a reheating section 203, and the temperature of the air passing through the combined air conditioning unit can be accurately adjusted through the reheating section 203, so that the temperature of the air sent into the room reaches a preset temperature.
According to a preferred embodiment, the combined air conditioning unit further comprises a humidification stage 204, as shown in fig. 1. Preferably, the humidification stage 204 is connected to the reheating stage 203, and the humidification stage 204 is used to humidify the air passing through the reheating stage 203. The humidification stage 204 may employ a humidification device of the prior art. The humidification stage 204 is generally used in a winter heating mode, and a summer cooling mode can achieve simultaneous temperature and humidity control through the first direct expansion coil 201 and/or the second direct expansion coil 202. The combined air conditioning unit of the preferred technical scheme of this embodiment further includes a humidifying section 204, and the humidity of the air passing through the combined air conditioning unit can be precisely adjusted through the humidifying section 204, so that the temperature sent into the room reaches the preset humidity.
According to a preferred embodiment, the first and second cold heat sources 101 and 102 are all multi-split outdoor units. The multi-split outdoor unit in the preferred technical solution of this embodiment may be a structure in the prior art, and will not be described herein again. Without being limited thereto, in the preferred embodiment, the first heat recovery air conditioning system and the second heat recovery air conditioning system may be used instead of the first cold heat source 101 and the second cold heat source 102.
Fig. 1 shows a block schematic diagram of an air conditioning system for a cardiac surgery operating room according to the present embodiment, and as shown in fig. 1, the air conditioning system for the cardiac surgery operating room further includes an air mixing section 205, a filtering section 206, an air supply section 207, and a high efficiency filter 208. Specifically, the air conditioning system for the cardiac surgery room of the present embodiment supplies air to the room 30 by: after the temperature of the air is controlled by the first direct expansion coil 201 and/or the second direct expansion coil 202, the temperature and humidity are accurately controlled and controlled by the reheating section 203 and/or the humidifying section 204, and then the air is sent into the high-efficiency filter 208 through the air supply section 207 to be filtered and then enters the indoor 30; on the other hand, the return air in the room 30 returns to the air mixing section 205 of the combined air conditioning unit through the return air inlet, the return air is mixed with the fresh air entering the combined air conditioning unit, then the mixture is filtered through the filtering section 206, and then the temperature is controlled through the first direct expansion coil 201 and/or the second direct expansion coil 202, and the circulation is performed, so that the continuous air supply to the room 30 is realized.
Example 2
This embodiment will explain the control method of the air conditioning system for cardiac surgery operating room of the present invention in detail.
In the control method of the air conditioning system for the cardiac surgery operating room according to any one of the embodiments 1, based on the operation mode and the operation condition of the air conditioning system, the operation states of the first cold heat source 101 and the second cold heat source 102 are controlled, and the operation states of the first direct expansion coil 201 and the second direct expansion coil 202 are controlled, so that the air passing through the combined air conditioning unit reaches the preset temperature and the preset humidity and is sent into the room 30. Specifically, the operation mode of the air conditioning system comprises a cooling mode and a heating mode; the operation working conditions of the air conditioning system comprise low-temperature public working conditions, normal-temperature working conditions and high-temperature working conditions; the operation states of the first cold heat source 101 and the second cold heat source 102 include an on state and an off state, wherein the on state includes a cooling state and a heating state; also, the operation states of the first direct expansion coil 201 and the second direct expansion coil 202 include an open state and a closed state, wherein the open state includes a cooling state and a heating state.
In any embodiment of the present invention, the control method for an air conditioning system of a cardiac surgery operating room controls the operating states of the first cold heat source 101 and the second cold heat source 102, and controls the operating states of the first direct expansion coil 201 and the second direct expansion coil 202, based on the operating mode and the operating condition of the air conditioning system, and allows the air passing through the combined air conditioning unit to reach a preset temperature and a preset humidity and then to be sent into the room, and in winter, the control method can maintain the stability of the room temperature and humidity of the cardiac surgery operating room by alternately using the two cold heat sources; on the other hand, the method can also rapidly heat up and cool down, and timely respond to the requirements of the heart surgery operating room on temperature and humidity. The control method for the air conditioning system of the cardiac surgery operating room in the embodiment solves the technical problem that when the direct-expansion air conditioning system in the prior art is used in the cardiac surgery operating room, the direct-expansion air conditioning system needs to be stopped for defrosting in winter, so that the humidity stability of the room temperature of the cardiac surgery operating room is influenced; simultaneously still solved the technical problem that the water system air conditioner among the prior art can not fast go up and down and the water system air conditioner can't open under low temperature environment.
According to a preferred embodiment, when the air conditioning system operates in the cooling mode, based on the operating condition of the air conditioning system, at least one of the first cold heat source 101 and the second cold heat source 102 is controlled to be in the cooling state, and at least one of the first direct expansion coil 201 and the second direct expansion coil 202 is controlled to be in the cooling and dehumidifying state, so that the air cooled and dehumidified by the first direct expansion coil 201 or the second direct expansion coil 202 is heated by the reheating section 203 to reach the preset temperature and the preset humidity.
Preferably, when the air conditioning system is in a low-temperature working condition, the first cold heat source 101 and the second cold heat source 102 are both in a refrigeration state, the first direct expansion coil 201 and the second direct expansion coil 202 are both in a refrigeration and dehumidification state, and the air cooled and dehumidified by the second direct expansion coil 202 is heated by the reheating section 203 to reach a preset temperature and a preset humidity. Specifically, the low-temperature working condition is that the temperature required by the indoor 30 is 16 ℃ and the relative humidity is 60%, and under the temperature and humidity condition, the patient is subjected to low-temperature anesthesia, so that the basal metabolism and the tissue damage of the patient can be reduced as far as possible. When the air conditioning system operates in a low-temperature working condition, the first cold and heat source 101 and the second cold and heat source 102 are both in a refrigeration state, the first direct expansion coil 201 and the second direct expansion coil 202 are both in a refrigeration dehumidification state, air after air mixing is refrigerated and dehumidified by the first direct expansion coil 201, the air temperature can be reduced to 14 ℃, and the relative humidity reaches 95%; after deep cooling and dehumidification are carried out by the second direct expansion coil 202, the air temperature can be reduced to 8 ℃, and the relative humidity reaches 95%; after being heated by the reheating section 203, the air temperature can be treated to 13-14 ℃ and the relative humidity reaches 60%, and then air is supplied, so that the indoor temperature is rapidly reduced to 16 ℃ and the relative humidity reaches 60%. Due to the difference of meteorological parameters in each region, when the first direct expansion coil 201 and the second direct expansion coil 202 are used for cooling and dehumidifying, the humidity of the air is preferentially controlled.
Preferably, when the air conditioning system is in a normal temperature condition, one of the first cold and heat source 101 and the second cold and heat source 102 is in a cooling state, and the other one is in a closed state; meanwhile, one of the first direct expansion coil 201 and the second direct expansion coil 202, which is connected with a cold and heat source in a refrigeration state, is in a refrigeration and dehumidification state, and the other one is in a closed state; and the air cooled and dehumidified by the first direct expansion coil 201 or the second direct expansion coil 202 is heated by the reheating section 203 to reach the preset temperature and the preset humidity. Specifically, under the normal temperature condition, for example, the temperature required by the indoor 30 is 22-26 ℃, the relative humidity is 55%, and under the temperature and humidity condition, after the extracorporeal circulation is cancelled, the normal body temperature of the human body can be quickly recovered. When the air conditioning system operates at a normal temperature, the first cold and heat source 101 is in a refrigeration state, the second cold and heat source 102 is in a closed state, meanwhile, the first direct expansion coil 201 is in a refrigeration dehumidification state, the second direct expansion coil 202 is in a closed state, and after air mixed with air is subjected to refrigeration and dehumidification by the first direct expansion coil 201, the air temperature can be reduced to 14 ℃, and the relative humidity reaches 95%; after being heated by the reheating section 203, the air temperature can be treated to 20-22 ℃ and the relative humidity reaches 55%, and then air is supplied, so that the indoor temperature is rapidly increased to 22 ℃ and the relative humidity reaches 55%. Due to the difference of meteorological parameters in each region, when the first direct expansion coil 201 and the second direct expansion coil 202 are used for cooling and dehumidifying, the humidity of the air is preferentially controlled.
Preferably, when the air conditioning system is in a high-temperature working condition, the first cold and heat source 101 is in a cooling state, and the second cold and heat source 102 is in a heating state; the first direct expansion coil 201 is in a refrigeration and dehumidification state, and the second direct expansion coil 202 is in a heating state; and the air which is cooled and dehumidified by the first direct expansion coil 201 and heated by the second direct expansion coil 202 is heated by the reheating section 203 to reach the preset temperature. Specifically, the high temperature condition is, for example, 29 ℃ required in the chamber 30, and the chest is sutured under the temperature condition. When the air conditioning system operates in a high-temperature working condition, the first cold and heat source 101 is in a refrigerating state, the second cold and heat source 102 is in a heating state, the first direct expansion coil 201 is in a refrigerating and dehumidifying state, the second direct expansion coil 202 is in a heating state, air after air mixing is firstly refrigerated and dehumidified by the first direct expansion coil 201, the air temperature can be reduced to 14 ℃, and the relative humidity reaches 95%; after being heated by the second direct expansion coil 202, the temperature of the air can be raised to 28 ℃; and then the temperature is accurately adjusted through the reheating section 203, so that the air supply temperature is 28-29 ℃, and air is supplied, and the indoor temperature is rapidly increased to 29 ℃. When the air conditioning system is in a high-temperature working condition, the humidity of the indoor 30 is not required, and the temperature of the air conditioning system is controlled preferentially.
After sewing, the air conditioning system operates at normal temperature, and the operation state is as described above.
According to a preferred embodiment, when the air conditioning system operates in the heating mode, the first cold heat source 101 and the second cold heat source 102 are controlled to be alternately in the heating state by using a linkage control manner, and one of the first direct expansion coil 201 and the second direct expansion coil 202 connected to the cold heat source in the heating state is controlled to be in the heating state, so that the air heated by the first direct expansion coil 201 or the second direct expansion coil 202 is heated and humidified by the reheating section 203 and the humidifying section 204 to reach the preset temperature and the preset humidity. When the air conditioning system operates in the heating mode, the heating capacity is much smaller than the cooling capacity, but because the temperature adjusting range of the reheating section 203 is limited, only the reheating section 203 is used for heating, which is not beneficial to quickly controlling the temperature of the indoor 30, and therefore an additional heat source is needed. When the air conditioning system operates in the heating mode, in the preferred technical scheme of this embodiment, one of the first cold heat source 101 and the second cold heat source 102 is controlled to be in the heating state, and the actions of the reheating section 203 and the humidifying section 204 are added, so that the temperature and humidity required by the low-temperature working condition, the normal-temperature working condition and the high-temperature working condition can be realized. In addition, in the preferred technical scheme of this embodiment, a linkage control mode is adopted to control the first cold heat source 101 and the second cold heat source 102 to be alternately in a heating state, so that the air conditioner can operate in a heating mode for 24 hours and maintain the temperature and humidity required by the operating room.
Preferably, the first cold heat source 101 and the second cold heat source 102 are alternately operated every 3 to 5 hours. More preferably, the first cold heat source 101 and the second cold heat source 102 are alternately operated every 4 hours. Without being limited thereto, the time for which the first cold heat source 101 and the second cold heat source 102 are alternately operated may be set based on actual circumstances.
Preferably, when the first cold heat source 101 and the second cold heat source 102 are in the exchange operation state, one of the first cold heat source 101 and the second cold heat source 102 is decreased in frequency, and the other one is increased in frequency, so as to maintain the preset temperature in the room. In the preferred embodiment, when the first cold heat source 101 and the second cold heat source 102 are switched to operate, the frequency of the cold heat source in the heating state is decreased, the frequency of the cold heat source in the off state is increased, and one cold heat source is decreased and one cold heat source is increased, so that the temperature and humidity stability of the indoor 30 can be maintained, and the temperature and humidity fluctuation of the indoor 30 can be avoided.
In the preferred embodiment, the first cold heat source 101 and the second cold heat source 102 are controlled to be alternately in the heating state by a linkage control method, that is, one of the first cold heat source 101 and the second cold heat source 102 is controlled to decrease in frequency, and the other one of the first cold heat source 101 and the second cold heat source 102 is controlled to increase in frequency, that is, the first cold heat source 101 and the second cold heat source 102 are controlled simultaneously. Specifically, in the preferred embodiment of the present invention, the coordinated control circuit in the prior art can be used to realize the coordinated control of the first cold heat source 101 and the second cold heat source 102.
In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (12)
1. An air conditioning system for a cardiac surgery operating room, comprising a cold and hot source assembly and a combined air conditioning unit, wherein the cold and hot source assembly at least comprises a first cold and hot source (101) and a second cold and hot source (102), the combined air conditioning unit at least comprises a first direct expansion coil (201) and a second direct expansion coil (202), the first cold and hot source (101) is connected with the first direct expansion coil (201), the second cold and hot source (102) is connected with the second direct expansion coil (202),
based on the operation mode and the operation condition of the air conditioning system, at least one of the first cold and heat source (101) and the second cold and heat source (102) is in an operation state, at least one of the first direct expansion coil (201) and the second direct expansion coil (202) is in an operation state, and air passing through the combined air conditioning unit reaches a preset temperature and a preset humidity and then is sent into a room (30).
2. The air conditioning system for a cardiac surgical operating room of claim 1, wherein the combined air conditioning pack further comprises a reheating section (203), the reheating section (203) being connected with the first and second direct expansion coils (201, 202), and the reheating section (203) being for heating air passing through the first or second direct expansion coil (201, 202).
3. Air conditioning system for cardiac surgery rooms according to claim 2 characterized in that the combined air conditioning group further comprises a humidifying section (204), the humidifying section (204) being connected with the reheating section (203) and the humidifying section (204) being used for humidifying the air passing through the reheating section (203).
4. Air conditioning system for cardiac surgery rooms according to any of claims 1 to 3, characterized in that the first cold heat source (101) and the second cold heat source (102) are both multi-split outdoor units.
5. A control method of an air conditioning system for a cardiac surgery operating room as set forth in any one of claims 1 to 4, wherein based on the operation mode and operation condition of the air conditioning system, the operation states of the first cold heat source (101) and the second cold heat source (102) are controlled, and the operation states of the first direct expansion coil (201) and the second direct expansion coil (202) are controlled, so that the air passing through the combined air conditioning unit reaches the preset temperature and the preset humidity and is delivered into the room (30).
6. The control method according to claim 5, wherein when the air conditioning system operates in the cooling mode, at least one of the first cold heat source (101) and the second cold heat source (102) is controlled to be in a cooling state based on an operating condition of the air conditioning system, at the same time, at least one of the first direct expansion coil (201) and the second direct expansion coil (202) is controlled to be in a cooling and dehumidifying state, and the air cooled and dehumidified by the first direct expansion coil (201) or the second direct expansion coil (202) is heated to a preset temperature and a preset humidity by the reheating section (203).
7. The control method according to claim 6, wherein when the air conditioning system is in a low temperature condition, the first cold heat source (101) and the second cold heat source (102) are both in a cooling state, the first direct expansion coil (201) and the second direct expansion coil (202) are both in a cooling and dehumidifying state, and the air cooled and dehumidified by the second direct expansion coil (202) is heated by the reheating section (203) to reach a preset temperature and a preset humidity.
8. The control method according to claim 6, wherein when the air conditioning system is in a normal temperature condition, one of the first cold heat source (101) and the second cold heat source (102) is in a cooling state, and the other one is in a closed state; meanwhile, one of the first direct expansion coil (201) and the second direct expansion coil (202) which is connected with a cold and heat source in a refrigerating state is in a refrigerating and dehumidifying state, and the other one is in a closing state; and the air which is refrigerated and dehumidified by the first direct expansion coil (201) or the second direct expansion coil (202) is heated to reach the preset temperature and the preset humidity by the reheating section (203).
9. The control method according to claim 6, wherein when the air conditioning system is in a high temperature condition, the first cold heat source (101) is in a cooling state, and the second cold heat source (102) is in a heating state; the first direct expansion coil (201) is in a refrigeration and dehumidification state, and the second direct expansion coil (202) is in a heating state; and the air which is refrigerated and dehumidified by the first direct expansion coil (201) and heated by the second direct expansion coil (202) is heated by the reheating section (203) to reach the preset temperature.
10. The control method according to claim 5, wherein when the air conditioning system operates in the heating mode, the first cold heat source (101) and the second cold heat source (102) are controlled to be alternately in the heating state in a linkage control manner, and one of the first direct expansion coil (201) and the second direct expansion coil (202) connected to the cold heat source in the heating state is controlled to be in the heating state, so that the air heated by the first direct expansion coil (201) or the second direct expansion coil (202) is heated by the reheating section (203) and humidified by the humidifying section (204) to reach a preset temperature and a preset humidity.
11. The control method according to claim 10, characterized in that the first cold heat source (101) and the second cold heat source (102) are alternately operated every 3 to 5 hours.
12. The control method according to claim 10, wherein when the first cold heat source (101) and the second cold heat source (102) exchange operating states, one of the first cold heat source (101) and the second cold heat source (102) decreases in frequency and the other increases in frequency, and a preset temperature is maintained in a room.
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