CN114294726A - Double-cold-source air conditioning system - Google Patents
Double-cold-source air conditioning system Download PDFInfo
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- CN114294726A CN114294726A CN202111592352.7A CN202111592352A CN114294726A CN 114294726 A CN114294726 A CN 114294726A CN 202111592352 A CN202111592352 A CN 202111592352A CN 114294726 A CN114294726 A CN 114294726A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 230000009977 dual effect Effects 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 claims description 4
- 239000000498 cooling water Substances 0.000 description 4
- 241000700605 Viruses Species 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 206010011409 Cross infection Diseases 0.000 description 2
- 206010029803 Nosocomial infection Diseases 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention belongs to the technical field of air conditioners, and discloses a double-cold-source air conditioning system which comprises a fresh air channel, wherein an evaporator and a surface air cooler are sequentially arranged in the fresh air channel along the airflow direction in the fresh air channel; the outdoor fresh air enters the room after passing through the evaporator and the surface cooler; the evaporator is connected with the outdoor unit of the air conditioner, the surface air cooler is connected with an outdoor cold source, the cold source in the surface air cooler is in a normally closed state, and when the evaporator breaks down, the cold source in the surface air cooler is open. The evaporator is used as a cold source, the surface cooler is used as another cold source, and the two cold sources are mutually independent; when the evaporator breaks down, the cold source in the surface air cooler is started, so that the normal treatment of indoor air can be ensured; secondly, the cold source of the surface air cooler is simple and easy to obtain, and when the double-cold-source air conditioning system is applied to a hospital, the surface air cooler is connected with a cold water system of the hospital; in addition, the invention integrally designs the two cold sources, and can be suitable for indoor environment with smaller space.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a double-cold-source air conditioning system.
Background
Patients are main users of hospital buildings, have poor physique and lower resistance than ordinary people, particularly have higher requirements on environment and air quality of high-cleanness areas such as operating rooms and ICUs, and need a comfortable, healthy and sanitary clean air conditioning system to avoid virus cross infection caused by poor factors such as air flow, temperature and cleanliness of indoor air.
In view of the above, there is a special air conditioning system for controlling the air in a clean operating room, which is mainly used to provide clean and comfortable room air for patients and to control the air flow direction to reduce indoor cross infection; for a clean operating room, an air conditioner of a patient needs to stably operate during an operation, once a problem occurs, normal refrigeration and dehumidification of indoor air cannot be guaranteed, viruses can be spread everywhere, even the operation fails, and serious safety accidents are caused.
Disclosure of Invention
In view of this, the present invention provides a dual cold source air conditioning system, which ensures stable operation of the air conditioning system by providing two mutually independent cold sources.
In order to solve the above problems, according to an aspect of the present application, an embodiment of the present invention provides a dual-cold-source air conditioning system, which includes a fresh air channel, and an evaporator and a surface air cooler are sequentially disposed in the fresh air channel along an airflow direction in the fresh air channel; the outdoor fresh air enters the room after passing through the evaporator and the surface cooler; the evaporator is connected with the outdoor unit of the air conditioner, the surface air cooler is connected with an outdoor cold source, the cold source in the surface air cooler is in a normally closed state, and when the evaporator breaks down, the cold source in the surface air cooler is open.
In some embodiments, a first fresh air filter is disposed between the inlet of the fresh air channel and the evaporator, and the first fresh air filter is used for primary filtering of fresh air.
In some embodiments, a heat exchange tube is arranged between the first filter and the evaporator, and the heat exchange tube is used for primary cooling of fresh air.
In some embodiments, the dual cold source air conditioning system comprises an exhaust channel, the heat exchange tube penetrates through the fresh air channel and the exhaust channel, and exhaust air in the exhaust channel is exhausted after heat exchange of the heat exchange tube.
In some embodiments, a ventilation filter is disposed between the end of the ventilation channel and the heat exchange tube.
In some embodiments, an electric heater is arranged between the surface air cooler and the outlet of the fresh air channel, and the electric heater is used for finely adjusting the temperature of the fresh air.
In some embodiments, a fan is disposed between the electric heater and the outlet of the fresh air channel, and an air outlet of the fan faces the outlet of the fresh air channel.
In some embodiments, a second fresh air filter is arranged between the fan and the outlet of the fresh air channel, and the second fresh air filter is used for performing secondary filtration on fresh air.
In some embodiments, an air outlet temperature and humidity sensor is arranged on a pipeline for connecting the fresh air channel and the indoor.
In some embodiments, the dual-cold-source air conditioning system further comprises a return air channel, wherein the tail end of the return air channel is communicated with the fresh air channel and is positioned between the evaporator and the surface cooler.
In some embodiments, a return air fan and a return air filter are sequentially arranged in the return air channel along the air flow direction in the return air channel.
In some embodiments, a return air temperature and humidity sensor is arranged on a pipeline connecting the return air channel and the room.
In some embodiments, the inlet and the outlet of the surface cooler are respectively connected with a water supply pipe and a water return pipe of an external water source.
Compared with the prior art, the double-cold-source air conditioning system has the following beneficial effects:
firstly, the evaporator is used as a cold source, the surface cooler is used as another cold source, and the two cold sources are mutually independent; when the evaporator breaks down, the cold source in the surface air cooler is started, so that the normal treatment of indoor air can be ensured; secondly, the cold source of the surface air cooler is simple and easy to obtain, and when the double-cold-source air conditioning system is applied to a hospital, the surface air cooler is connected with a cold water system of the hospital; in addition, the invention integrally designs the two cold sources, and can be suitable for indoor environment with smaller space.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of a dual cold source air conditioning system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an application of a dual cold source air conditioning system in a building according to an embodiment of the present invention.
Wherein:
1. a fresh air channel; 2. an air exhaust channel; 3. an air return channel; 4. an air conditioner outdoor unit; 5. an outdoor cold source; 11. an evaporator; 12. a surface cooler; 13. a first fresh air filter; 14. a heat exchange pipe; 15. an electric heater; 16. a fan; 17. a second fresh air filter; 18. an air outlet temperature and humidity sensor; 21. an exhaust air filter; 31. a return air fan; 32. a return air filter; 33. return air temperature and humidity sensor.
Detailed Description
To further explain the technical means and effects of the present invention adopted to achieve the predetermined object, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In the description of the present invention, it is to be understood that the terms "vertical", "lateral", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention, and do not mean that the device or member to which the present invention is directed must have a specific orientation or position, and thus, cannot be construed as limiting the present invention.
In the description of the present invention, it should 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiment provides a dual-cold-source air conditioning system, as shown in fig. 1, the dual-cold-source air conditioning system includes a fresh air channel 1, and an evaporator 11 and a surface air cooler 12 are sequentially arranged in the fresh air channel 1 along an airflow direction in the fresh air channel 1; the fresh outdoor air enters the room after passing through the evaporator 11 and the surface cooler 12; the evaporator 11 is connected with the outdoor unit 4 of the air conditioner, the surface air cooler 12 is connected with the outdoor cold source 5, the cold source in the surface air cooler 12 is in a normally closed state, and when the evaporator 11 fails, the cold source in the surface air cooler 12 is open.
Specifically, in the present embodiment, the evaporator 11 is used as a cold source and connected to an outdoor unit of an air conditioner, the surface air cooler 12 is used as another cold source and connected to an outdoor cold source (generally, a cold water system in a building), and the two cold sources are independent of each other; when the evaporator 11 breaks down, the cold source in the surface air cooler 12 is started, so that the normal treatment of indoor air can be ensured; in addition, the cold sources of the surface air cooler 12 in the embodiment are simple and easy to obtain, and when the double-cold-source air conditioning system is applied to hospitals, the surface air cooler is connected with a cold water system of the hospitals, so that the waste of energy is avoided.
More specifically, the outdoor unit of the air conditioner connected to the evaporator 11 includes a compressor, a condenser, and a restrictor, an outlet of the evaporator 11 is connected to an inlet of the compressor, and an outlet of the condenser is connected to an inlet of the evaporator 11 through the restrictor, so that the refrigerant output from the condenser flows through the evaporator and then flows back to the compressor.
The inlet and the outlet of the surface air cooler 12 are respectively connected with a water supply pipe and a water return pipe of an external cold source through a freezing water pipe, and the freezing water pipe is provided with a regulating valve for controlling whether the cold source in the surface air cooler 12 is switched on or not.
In a specific embodiment: a first fresh air filter 13 is arranged between the inlet of the fresh air channel 1 and the evaporator 11, and the first fresh air filter 13 is used for primary filtration of fresh air.
The first fresh air filter 13 is mainly used for filtering large particles of dust and other substances in the air and preventing the large particles of dust and other substances from affecting the performance of the evaporator 11 and the surface air cooler 12.
In a specific embodiment: a heat exchange tube 14 is arranged between the first fresh air filter 13 and the evaporator 11, and the heat exchange tube 14 is used for carrying out primary cooling on fresh air. And, the air conditioning system of the double cold sources includes the air exhaust channel 2, the heat exchange tube 14 runs through the new trend channel 1 and air exhaust channel 2, the air exhaust in the air exhaust channel 2 is discharged after the heat exchange of the heat exchange tube 14.
In this embodiment, when the exhaust air is exhausted to the outdoor through the exhaust channel 2, the heat exchange is performed through the heat exchange tube 14, and the heat exchange tube 14 recovers the temperature of the exhaust air and uses the temperature for primary cooling of fresh air; that is, the present embodiment utilizes the waste heat of the discharged air through the heat exchange pipe 14, so that the utilization efficiency of the air is higher, and the refrigeration load of the evaporator 11 or the surface air cooler 12 is reduced.
In a specific embodiment: an exhaust filter 21 is arranged between the tail end of the exhaust channel 2 and the heat exchange pipe 14. The exhaust filter 21 is mainly used for filtering contaminants such as viruses and bacteria in indoor exhaust air to prevent air from being polluted after the contaminants are directly exhausted to the outdoor.
In a specific embodiment: an electric heater 15 is arranged between the surface air cooler 12 and the outlet of the fresh air channel 1, the electric heater 15 is used for finely adjusting the temperature of fresh air, a fan 16 is arranged between the electric heater 15 and the outlet of the fresh air channel 1, and the air outlet of the fan 16 faces the outlet of the fresh air channel 1.
Specifically, the electric heater 15 is used to finely adjust the temperature of the air to a target temperature, and then sent out by the fan 16.
In a specific embodiment: a second fresh air filter 17 is arranged between the fan 16 and the outlet of the fresh air channel 1, and the second fresh air filter 17 is used for carrying out secondary filtration on fresh air.
The second fresh air filter 17 is a high efficiency filter, which can be a single filter or a combination of a plurality of filters, but in any way, it should be selected and set strictly according to the current national standard "building technical code of clean operating department of hospital" GB 50333.
In a specific embodiment: an air outlet temperature and humidity sensor 18 is arranged on a pipeline connecting the fresh air channel 1 and the room; the air outlet temperature and humidity sensor 18 is mainly used for detecting whether the temperature and the humidity of air to be introduced into the room meet requirements or not, and if the temperature and the humidity do not meet the requirements, the device inside the fresh air channel 1 is controlled to be adjusted. For example, when the outlet air temperature and humidity sensor 18 detects that the temperature of the air is too low, the cold source of the surface air cooler 12 or the evaporator 11 may be reduced, or the electric heater 15 may be adjusted to sufficiently heat the air. Of course, each parameter can be controlled manually or automatically, for example, a controller is provided, the controller can receive the parameters collected by the air outlet temperature and humidity sensor 18, compare the parameters with preset standard parameters, and control the air cooler 12, the evaporator 11 or the electric heater according to the compared structure; more specifically, an electric valve may be disposed on the freezing water pipe of the surface cooler 12 connected to the external cold source, and the controller controls the participation amount of the cold source by controlling the opening and closing degree of the electric valve.
In a specific embodiment: the double-cold-source air conditioning system further comprises a return air channel 3, wherein the tail end of the return air channel 3 is communicated with the fresh air channel 1 and is positioned between the evaporator 11 and the surface air cooler 12.
Specifically, along the airflow direction in the return air channel 3, a return air fan 31 and a return air filter 32 are sequentially arranged in the return air channel 3, and a return air temperature and humidity sensor 33 is arranged on a pipeline connecting the return air channel 3 and the room.
Thus, under the action of the return air fan 31, the return air passes through the return air filter 32 and then is mixed with the fresh air; the return air temperature and humidity sensor 33 can be used for detecting the temperature and humidity of return air, and further pre-judging the temperature and humidity of the return air and fresh air after mixing, so as to control the working state of each device in the fresh air channel 1; of course, the return air temperature and humidity sensor 33 can also make the staff visually see the temperature and humidity of the return air, and then judge whether the return air meets the requirements indoors.
The working process of the double-cold-source air conditioning system provided by the embodiment of the invention is as follows:
outdoor air firstly enters a first fresh air filter 13 in a fresh air channel 1 for preliminary filtration, the air is cooled under the action of a heat exchange pipe 14, the temperature of the air is further reduced through an evaporator 11, the air humidity is reduced at the moment, then dry air enters a return air channel 3 to be mixed with return air and then enters a surface air cooler 12, a cold source in the surface air cooler 12 is normally closed, heat exchange is not carried out under normal conditions, then the air enters an electric heater 15, the air is sent out after the fine adjustment temperature of the air meets the requirement, and finally the air is efficiently filtered through a second fresh air filter 17 to meet the strict clean requirement and then is sent into a room; meanwhile, the indoor discharge air is heat-transferred with the heat exchange pipe 14 through the discharge air passage 2, so that the waste heat of the discharge air is absorbed by the heat exchange pipe 14 and then discharged through the discharge air filter 21.
Of course, in the above process, if the evaporator 11 fails, the cold source in the surface air cooler 12 is opened, and the surface air cooler 12 replaces the evaporator 11 to further cool the air.
In addition, the two cold source air conditioning system that this embodiment provided can be arranged in the clean operating room of hospital, as shown in fig. 2, the cooling water system of surface cooler 12 is the cooling water system 6 of other floors of hospital of integration, and the cold source is the same, and the cooling water system mainly provides other floors of hospital to use inside the room to the condition at ordinary times, and clean operating room need not utilize its cold source, and after the evaporimeter broke down, the inside cold source of clean operating room starts and will carry out the heat transfer, and it can to utilize the inside demand of partial cold volume assurance clean operating room of cooling water system this moment.
The double-cold-source air conditioning system provided by the embodiment is mainly applied to emergency situation treatment, such as a clean operating room of a hospital, because the evaporator runs for a long time, the outdoor unit of the air conditioner is likely to break down, such as fluorine leakage, compressor failure and the like, so that the evaporator can stop working, and the operating room which is operating is very dangerous, at the moment, the standby surface cooler can be opened to supply cold again, so that the air in the air can be ensured to be in a basic air state, and no major accident can be caused.
In summary, it is easily understood by those skilled in the art that the advantageous technical features described above can be freely combined and superimposed without conflict.
The present invention is not intended to be limited to the particular embodiments shown, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (13)
1. The double-cold-source air conditioning system is characterized by comprising a fresh air channel (1), wherein an evaporator (11) and a surface air cooler (12) are sequentially arranged in the fresh air channel (1) along the airflow direction in the fresh air channel (1); outdoor fresh air enters the room after passing through the evaporator (11) and the surface cooler (12); the evaporator (11) is connected with an outdoor unit of an air conditioner, the surface air cooler (12) is connected with an outdoor cold source, the cold source in the surface air cooler (12) is in a normally closed state, and when the evaporator (11) breaks down, the cold source in the surface air cooler (12) is opened.
2. Double cold source air conditioning system according to claim 1, wherein a first fresh air filter (13) is arranged between the inlet of the fresh air channel (1) and the evaporator (11), the first fresh air filter (13) being used for primary filtration of fresh air.
3. Double cold source air conditioning system according to claim 2, wherein a heat exchange tube (14) is arranged between the first fresh air filter (13) and the evaporator (11), the heat exchange tube (14) being used for primary cooling of the fresh air.
4. The dual cold source air conditioning system according to claim 3, wherein the dual cold source air conditioning system comprises an exhaust channel (2), the heat exchange pipe (14) penetrates through the fresh air channel (1) and the exhaust channel (2), and exhaust air in the exhaust channel (2) is exhausted after being subjected to heat exchange through the heat exchange pipe (14).
5. Double cold source air conditioning system according to claim 4, wherein a ventilation filter (21) is arranged between the end of the ventilation channel (2) and the heat exchange pipe (14).
6. Double cold source air conditioning system according to any of claims 1-5, wherein an electric heater (15) is arranged between the surface air cooler (12) and the outlet of the fresh air channel (1), and the electric heater (15) is used for fine adjustment of the temperature of the fresh air.
7. The dual cold source air conditioning system according to claim 6, wherein a fan (16) is disposed between the electric heater (15) and the outlet of the fresh air channel (1), and an air outlet of the fan (16) faces the outlet of the fresh air channel (1).
8. Double cold source air conditioning system according to claim 7, wherein a second fresh air filter (17) is arranged between the fan (16) and the outlet of the fresh air channel (1), the second fresh air filter (17) being used for secondary filtration of fresh air.
9. The dual cold source air conditioning system according to any one of claims 1-5, wherein a pipeline connecting the fresh air channel (1) and the room is provided with an outlet air temperature and humidity sensor (18).
10. The dual cold source air conditioning system as claimed in any one of claims 1 to 5, further comprising a return air channel (3), wherein the end of the return air channel (3) is communicated with the fresh air channel (1) and is located between the evaporator (11) and the surface air cooler (12).
11. Double cold source air conditioning system according to claim 10, wherein a return air fan (31) and a return air filter (32) are arranged in the return air channel (3) in sequence in the direction of the air flow in the return air channel (3).
12. The dual cold source air conditioning system as claimed in claim 10, wherein a return air temperature and humidity sensor (33) is provided on a pipeline connecting the return air channel (3) and the indoor.
13. The dual cold source air conditioning system as claimed in any one of claims 1 to 5, wherein an inlet and an outlet of the surface cooler (12) are connected to a water supply pipe and a water return pipe, respectively, of an external water source.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111592352.7A CN114294726A (en) | 2021-12-23 | 2021-12-23 | Double-cold-source air conditioning system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111592352.7A CN114294726A (en) | 2021-12-23 | 2021-12-23 | Double-cold-source air conditioning system |
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| CN114294726A true CN114294726A (en) | 2022-04-08 |
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| CN202111592352.7A Pending CN114294726A (en) | 2021-12-23 | 2021-12-23 | Double-cold-source air conditioning system |
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| SU1689725A1 (en) * | 1989-07-31 | 1991-11-07 | Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Институт По Оборудованию Для Кондиционирования Воздуха И Вентиляции | Method and air-conditioner for cooling incoming air |
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2021
- 2021-12-23 CN CN202111592352.7A patent/CN114294726A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1689725A1 (en) * | 1989-07-31 | 1991-11-07 | Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Институт По Оборудованию Для Кондиционирования Воздуха И Вентиляции | Method and air-conditioner for cooling incoming air |
| CN207907434U (en) * | 2018-01-15 | 2018-09-25 | 广东省建筑科学研究院集团股份有限公司 | A kind of double low-temperature receiver depth dehumidifying fresh air treatment systems |
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Application publication date: 20220408 |
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