CN220397706U - Variable air volume air conditioning system for assisting fresh air supply - Google Patents
Variable air volume air conditioning system for assisting fresh air supply Download PDFInfo
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- CN220397706U CN220397706U CN202322202395.0U CN202322202395U CN220397706U CN 220397706 U CN220397706 U CN 220397706U CN 202322202395 U CN202322202395 U CN 202322202395U CN 220397706 U CN220397706 U CN 220397706U
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 73
- 230000001105 regulatory effect Effects 0.000 claims abstract description 79
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000011084 recovery Methods 0.000 claims abstract description 31
- 239000007921 spray Substances 0.000 claims abstract description 21
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 18
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 18
- 230000000694 effects Effects 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000005034 decoration Methods 0.000 claims description 5
- 230000030279 gene silencing Effects 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 239000000243 solution Substances 0.000 description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000013461 design Methods 0.000 description 7
- 239000003507 refrigerant Substances 0.000 description 6
- 238000007791 dehumidification Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008929 regeneration Effects 0.000 description 4
- 238000011069 regeneration method Methods 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- WSNMPAVSZJSIMT-UHFFFAOYSA-N COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 Chemical compound COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 WSNMPAVSZJSIMT-UHFFFAOYSA-N 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000012266 salt solution Substances 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
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- 238000012544 monitoring process Methods 0.000 description 1
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Abstract
The utility model provides a variable air volume air conditioning system for auxiliary fresh air supply, which comprises a solution type total heat recovery device, a variable frequency exhaust fan, an air conditioning BOX, a lower unit spray module, a solution pump, a first electric multi-blade regulating air valve, a second electric multi-blade regulating air valve, a first air conditioning supply tail end VAV-BOX, a first fresh air supply tail end VAV-BOX, a temperature sensor, a carbon dioxide and relative humidity sensor, a first electric double-position regulating valve, a first heat exchange coil section, a second heat exchange coil section, an upper unit spray module, a communicating pipe, a pressure sensor, a second electric double-position regulating valve, a third electric double-position regulating valve, a fourth electric double-position regulating valve, a main air supply pipe pressure sensor, an internal variable frequency blower of a heat exchange unit, a variable frequency exhaust fan in the heat exchange unit and an auxiliary fresh air temperature sensor. The problem that the conventional variable air volume air conditioning system possibly causes insufficient fresh air volume or supercools a room after the fresh air volume requirement is met when the indoor load is met is avoided.
Description
Technical Field
The utility model relates to the technical field of fresh air supply, in particular to a variable air volume air conditioning system for assisting fresh air supply.
Background
When the conventional variable air volume all-air conditioning system is positioned in a unfavorable working condition, a minimum fresh air supply mode is adopted, namely, the ratio of fresh air volume in the system air supply volume is a fixed value, so when the load of a terminal service area is smaller, the terminal air supply volume is reduced along with the reduction of the air conditioning load, and the condition that the fresh air supply volume of the area is smaller and the fresh air supply volume requirement of personnel is not met is caused. Therefore, an independent fresh air supply mode can be adopted to meet the fresh air quantity requirement in the air conditioning area.
Patent document CN107702227A (application number: CN 201711219169.6) discloses a variable air volume air conditioning system, including forced draught blower (1), first variable frequency drive (2), return air machine (3), second variable frequency drive (4), air purification filter (5), cold water coil pipe (6), cold water return circuit (7), cold water valve (8), controller (9) and air duct piping (10), air duct piping (10) include first tuber pipe (10-1) and second tuber pipe (10-2), first tuber pipe (10-1) link up with second tuber pipe (10-2), first tuber pipe (10-1) one end is established as fresh air pipe portion (11), the blast pipe portion (12) are established to the first tuber pipe (10-1) other end, second tuber pipe one end is established as return air pipe portion (13), the second tuber pipe other end is established as blast pipe portion (14), first tuber pipe and second link up the junction and are established as mixing chamber (15). However, this patent does not solve the technical problems existing at present.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model aims to provide a variable air volume air conditioning system for assisting fresh air supply.
The variable air volume air conditioning system for assisting fresh air supply provided by the utility model comprises: the system comprises a solution type total heat recovery device, a variable-frequency exhaust fan, an air conditioning BOX, a lower unit spray module, a solution pump, a first electric multi-blade regulating air valve, a second electric multi-blade regulating air valve, a first air conditioning air supply tail end VAV-BOX, a first fresh air supply tail end VAV-BOX, a temperature sensor, a carbon dioxide and relative humidity sensor, a first electric double-position regulating valve, a first heat exchange coil section, a second heat exchange coil section, an upper unit spray module, a communicating pipe, a pressure sensor, a second electric double-position regulating valve, a third electric double-position regulating valve, a fourth electric double-position regulating valve, an air supply main pipe pressure sensor, a variable-frequency blower in a heat exchange unit, a variable-frequency exhaust fan in the heat exchange unit and an auxiliary fresh air temperature sensor;
the solution type total heat recovery device is arranged on the roof machine room layer;
the variable-frequency exhaust fan is electrically connected with the pressure sensor;
the variable-frequency exhaust fan and the first electric double-position regulating valve are connected with the first heat exchange tube section and the solution type total heat recovery device;
the air conditioning box is electrically connected with a main air supply pipe pressure sensor which is arranged at the near end side of the air supply pipeline;
the lower unit spray module, the first heat exchange coil section, the second heat exchange coil section and the upper unit spray module are connected through a solution pump and a solution transmission pipeline;
the variable-frequency exhaust fan, the air conditioning box, the first electric multi-blade regulating air valve, the second electric multi-blade regulating air valve and the first electric double-position regulating valve are communicated through an air pipe;
the first air conditioner air supply end VAV-BOX and the first fresh air supply end VAV-BOX are arranged above the room decorating ceiling;
the first air conditioner air supply tail end VAV-BOX is electrically connected with the temperature sensor;
the temperature sensor and the carbon dioxide and relative humidity sensor are arranged below the inner decorative surface of the service area;
the carbon dioxide and relative humidity sensor is connected with a second fresh air supply tail end VAV-BOX;
the communicating pipe is arranged at the partition wall between the closed room and the public open space and is positioned above the decorative surface;
the first air-conditioning air supply terminal VAV-BOX and the second air-conditioning air supply terminal VAV-BOX are arranged in an open office area, a personal office and a meeting room;
the first fresh air supply end VAV-BOX and the second fresh air supply end VAV-BOX are only arranged in a personal office or a meeting room, and correspond to the load characteristics in the room;
the solution type total heat recovery device is linked with a fourth electric double-position regulating valve;
the lower unit spraying module, the solution pump, the variable-frequency blower in the heat exchange unit and the auxiliary fresh air temperature sensor are adjacently arranged;
the heat exchange unit inner frequency conversion exhaust fan, the auxiliary fresh air temperature sensor and the second heat exchange coil section are electrically connected with the carbon dioxide and relative humidity sensor.
Preferably, two ends of the communicating pipe are provided with silencing elbows.
Preferably, the variable-frequency exhaust fan in the heat exchange unit is interlocked with the auxiliary fresh air temperature sensor.
Preferably, the first heat exchange coil section is electrically connected with an auxiliary fresh air temperature sensor.
Preferably, the variable frequency exhaust fan in the heat exchange unit is interlocked with the variable frequency exhaust fan.
Preferably, the first electrically powered multi-vane regulator valve is interlocked with the second electrically powered multi-vane regulator valve.
Preferably, the pressure sensor is arranged in a middle area with personnel activity in the public open area and is interlocked with the first electric double-position regulating valve and the variable-frequency exhaust fan.
Preferably, the first electric multi-blade regulating air valve and the second electric multi-blade regulating air valve are respectively arranged on the air conditioner fresh air pipe and the air conditioner exhaust pipe, the first electric multi-blade regulating air valve and the second electric multi-blade regulating air valve are interlocked, correspondingly connected with the air conditioner box, and the total opening is guaranteed to be percent.
Preferably, the first electric double-position regulating valve is opened or closed in linkage with the variable-frequency exhaust fan;
the second electric double-position regulating valve is opened or closed in linkage with the solution type total heat recovery device;
the third electric double-position regulating valve is linked with the second electric double-position regulating valve, when the second electric double-position regulating valve is closed, the third electric double-position regulating valve is opened, and when the second electric double-position regulating valve is opened, the third electric double-position regulating valve is closed.
Preferably, the first air-conditioning supply end VAV-BOX, the second air-conditioning supply end VAV-BOX, the first fresh air supply end VAV-BOX, and the second fresh air supply end VAV-BOX are all pressure independent.
Compared with the prior art, the utility model has the following beneficial effects:
(1) The auxiliary independent fresh air system is arranged to decouple the fresh air control from the indoor cold load control, so that the fresh air system can be supplied according to the room load demand on the premise of meeting the room fresh air demand, has an energy-saving effect, avoids the problem that the conventional variable air volume air conditioning system possibly causes insufficient fresh air volume or the room is supercooled after meeting the fresh air demand when meeting the indoor load, and can meet the indoor air humidity control demand;
(2) The communication pipe is arranged between the closed room and the open large-space area, so that the condition that the closed room is concentrated in the open area to hang down the air and simultaneously provide uniform monitoring conditions for the room pressure of the air conditioner at the layer is realized, and the arranged bidirectional exhaust passage can meet the system working requirements in winter and summer and in transitional seasons;
(3) The conference room, the office and other cubicles adopt all-air systems instead of a fan coil fresh air adding system, so that hidden dangers of suspended ceiling water leakage caused by the fact that an air conditioner water pipeline enters the room are avoided, and the sanitation problem caused by bacterial and algae breeding in a condensate water tray can be avoided;
(4) For the solution type total heat recovery unit, when the solution passes through two heat exchange sections (corresponding to 13 and 14) to participate in heat exchange, the heat medium utilizes waste heat or unit condensation heat extraction, or an air conditioning system stores condensed water as a refrigerant to treat salt solution, so that the solution type total heat recovery unit has good economic and energy-saving significance.
Drawings
Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a diagram of the overall structure of the present utility model;
wherein: 1-a solution type total heat recovery device; 2-a variable-frequency exhaust fan; 3-an air conditioning box; 4-a lower unit spraying module; 5-a solution pump; 6-a first electric multi-blade regulating air valve; 7-a second electric multi-blade regulating air valve; 8-a first air conditioner air supply end VAV-BOX; 9-first fresh air supply end VAV-BOX; 10-a temperature sensor; 11-carbon dioxide and relative humidity sensor; 12-a first electric two-position regulating valve; 13-a first heat exchange coil section; 14-a second heat exchange coil section; 15-an upper unit spray module; 16-communicating pipe; 17-a pressure sensor; 18-a second air conditioner air supply end VAV-BOX; 19-a second fresh air supply tail end VAV-BOX; 20-a second electric two-position regulating valve; 21-a third electric two-position regulating valve; 22-a variable-frequency air blower in the heat exchange unit; 23-a variable-frequency exhaust fan in the heat exchange unit; 24-auxiliary fresh air temperature sensor.
Detailed Description
The present utility model will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present utility model, but are not intended to limit the utility model in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present utility model.
Examples:
the utility model provides a variable air volume air conditioning system for assisting fresh air supply, which is provided with an auxiliary independent fresh air system, is combined with a conventional variable air volume system, sets the temperature of a working point after fresh air is processed as the temperature of an indoor design point, and meets the fresh air volume required by a room on the premise of not influencing the indoor temperature, thereby solving the problem of insufficient fresh air volume caused by smaller air supply volume when the air conditioning load of a service area is smaller in the traditional variable air volume air conditioning system, and can dehumidify by utilizing independent fresh air according to the humidity control requirement of the room, and simultaneously meet the requirements of humidity, temperature and fresh air volume of the room when the variable air volume air conditioning system is applied to the occasion of densely needed fresh air volume of meeting rooms and the like.
As shown in fig. 1, the variable air volume air conditioning system for assisting fresh air supply provided by the utility model comprises: the solution type total heat recovery device 1, the variable-frequency exhaust fan 2, the air conditioning BOX 3, the lower unit spraying module 4, the solution pump 5, the first electric multi-blade regulating air valve 6, the second electric multi-blade regulating air valve 7, the first air conditioning air supply tail end VAV-BOX8, the first fresh air supply tail end VAV-BOX9, the temperature sensor 10, the carbon dioxide and relative humidity sensor 11, the first electric double-position regulating valve 12, the first heat exchange disc pipe section 13, the second heat exchange disc pipe section 14, the upper unit spraying module 15, the communicating pipe 16, the pressure sensor 17, the second electric double-position regulating valve 18, the third electric double-position regulating valve 19, the fourth electric double-position regulating valve 20, the main air supply pipe pressure sensor 21, the variable-frequency air blower 22 in the heat exchange unit, the variable-frequency exhaust fan 23 in the heat exchange unit and the auxiliary fresh air temperature sensor 24.
The whole structure comprises one to three, wherein the first structure is an auxiliary fresh air system and corresponds to the solution type total heat recovery device 1 and is arranged on a roof machine room layer; the second structure is equipment in an air conditioner room, and each regulating valve on an air pipe connected with the equipment is positioned below the second structure; the third structure is mainly the tail end in the service area, the sensor and the communicating pipe, and is adjacent to the second structure; the structural description object is an air conditioning system, namely, the structure one to three are communicated through an air pipe, and the structure one and the structure two are communicated through the structure three to realize the environmental design parameter requirement of an air conditioning area. Connection relationship between three structures:
the temperature control requirement in the air conditioning area is realized by conveying air from the second structure to the service area through the third structure, the air conditioning box 3 in the second structure is electrically connected with the main air supply pipe pressure sensor 21 in the third structure, and the air conditioning box 3 adjusts the total air supply amount according to the feedback signal of the main air supply pipe pressure sensor 21 so as to be matched with the sensible heat load of the air conditioning system;
the variable frequency exhaust fan 2 in the second structure is electrically connected with the internal pressure sensor 17 in the room in the third structure, and the variable frequency exhaust fan 2 adjusts the exhaust volume according to the feedback signal of the internal pressure sensor 17 so as to ensure the micro positive pressure of the system;
the variable frequency exhaust fan 23, the auxiliary fresh air temperature sensor 24 and the second heat exchange coil section 14 in the heat exchange unit of the first component are electrically connected with the carbon dioxide and relative humidity sensor 11 in the third component, and the fresh air supply quantity and the dehumidification effect of the solution on the fresh air are regulated through the feedback of the relative humidity and carbon dioxide concentration of the carbon dioxide and relative humidity sensor 11;
the variable frequency exhaust fan 2 and the first electric double-position regulating valve 12 in the structure II are linked with the first heat exchange tube section 3 and the solution type total heat recovery device 1 in the structure I, when the solution type total heat recovery device 1 or the air conditioning box 3 is opened, the variable frequency exhaust fan 2 and the first electric double-position regulating valve 12 are opened, and when the solution type total heat recovery device 1 and the air conditioning box 3 are closed, the variable frequency exhaust fan 2 and the first electric double-position regulating valve 12 are closed; the frequency conversion exhaust fan 23 in the heat exchange unit in the structure I and the frequency conversion exhaust fan 2 in the structure II are required to be interlocked to keep the exhaust air quantity consistent.
The solution type total heat recovery device 1 in the structure I is linked with the fourth electric double-position regulating valve 20 and is opened and closed in the same action; and in the transition season, the first closing structure only operates the second and third structures, at this time, the second electric double-position regulating valve 18 is closed, and the third electric double-position regulating valve 19 is opened.
Structure one: the device comprises a solution type total heat recovery device 1, a lower unit spray module 4, a solution pump 5, a first heat exchange coil section 13, a second heat exchange coil section 14, an upper unit spray module 15, a heat exchange unit internal variable frequency blower 22, a heat exchange unit internal variable frequency exhaust fan 23 and an auxiliary fresh air temperature sensor 24. The lower unit spray module 4, the first heat exchange coil section 13, the second heat exchange coil section 14 and the upper unit spray module 15 are connected by the solution pump 5 through a solution conveying pipeline, and the upper unit spray module 15 is adjacent to the variable-frequency exhaust fan 23 in the heat exchange unit and is positioned at the uppermost layer of the structure, namely, exhaust air is exhausted outdoors after being subjected to solution regeneration treatment; the first heat exchange coil section 13 and the second heat exchange coil section 14 are adjacently positioned in the middle layer of the first structure and are treatment and regeneration sections of the solution; the lower unit spraying module 4, the solution pump 5, the variable frequency blower 22 in the heat exchange unit and the auxiliary fresh air temperature sensor 24 are adjacent and positioned at the lowest layer of the structure, namely fresh air is treated and then is sent into a room. The variable-frequency exhaust fan 23 in the heat exchange unit is required to be interlocked with the auxiliary fresh air temperature sensor 24 to keep the output of the air quantity of the fan consistent, the first heat exchange coil section 13 is electrically connected with the auxiliary fresh air temperature sensor 24, and the first heat exchange coil section 13 adjusts the refrigerant parameters through the feedback signal of the auxiliary fresh air temperature sensor 24 to ensure that the fresh air supply temperature reaches the indoor design temperature value.
And (2) a structure II: the variable-frequency air exhaust fan comprises a variable-frequency air exhaust fan 2, an air conditioning box 3, a first electric multi-blade adjusting air valve 6, a second electric multi-blade adjusting air valve 7 and a first electric double-position adjusting valve 12, wherein the components are communicated through an air pipe, the components are adjacently arranged, and the first electric multi-blade adjusting air valve 6 is interlocked with the second electric multi-blade adjusting air valve 7 to ensure the opening degree to be 100%; the variable frequency exhaust fan 2 and the first electric double-position regulating valve 12 are linked with the air conditioning box 3.
And (3) a structure III: the air conditioner comprises a first air conditioner air supply tail end VAV-BOX8, a first fresh air supply tail end VAV-BOX9, a temperature sensor 10, a carbon dioxide and relative humidity sensor 11, a communicating pipe 16, a pressure sensor 17 and an air supply main pipe pressure sensor 21, wherein the first air conditioner air supply tail end VAV-BOX8 and the first fresh air supply tail end VAV-BOX9 are arranged above a room decoration suspended ceiling, are adjacently arranged, the temperature sensor 10, the carbon dioxide and the relative humidity sensor 11 are arranged below a decoration surface in a service area, the pressure sensor 17 is arranged in a middle area with personnel activity in a public open area, both ends of the communicating pipe 16 adopt silencing elbows, the sealing room and the public open area are separated by partition walls and are arranged above the decoration surface, and the air supply main pipe pressure sensor 21 is arranged on the near tail end side of an air supply pipeline. The first air conditioner air supply terminal VAV-BOX8 is electrically connected with the temperature sensor 10, and the first air conditioner air supply terminal VAV-BOX8 adjusts the air supply quantity through the feedback signal of the temperature sensor 10 so as to meet the temperature requirement of a service area.
Working principle:
(1) For the air conditioning BOX 3, the outdoor air conditioning fresh air and the indoor return air are mixed and then are sent to the indoor through the first air conditioning air supply tail end VAV-BOX8 and the second air conditioning air supply tail end VAV-BOX18, the temperature of an indoor corresponding area is monitored by the temperature sensor 10 arranged on the suspended ceiling, the design temperature requirement of a service area is met by adjusting the tail end air quantity mode, and the air conditioning BOX 3 is compared with a conventional static pressure variable air quantity system through the set point pressure change on a main pipe to correspondingly adjust the air quantity of a fan so as to match the air quantity required by the system;
(2) Independent fresh air after heat recovery treatment by the solution type total heat recovery device 1 is respectively sent into a room through a first fresh air supply tail end VAV-BOX9 and a second fresh air supply tail end VAV-BOX19, the carbon dioxide concentration and the relative humidity of a corresponding indoor area are monitored by a carbon dioxide and relative humidity sensor 11 arranged on a suspended ceiling, and the fresh air quantity requirement of a service area is preferentially met by adjusting the tail end air quantity; when the fresh air quantity demand is met and the relative humidity of the corresponding service area does not reach the design parameter range under the precondition that the fresh air quantity is unchanged, the solution type total heat recovery device 1 controls the relative humidity of the service area by adjusting the fresh air moisture content so as to meet the demand;
(3) The communicating pipe 16 is responsible for communicating the space between the closed room and the open office area, the variable frequency exhaust fan 2 is connected with the pressure sensor 17 to monitor the indoor pressure value, the air quantity of the exhaust fan is regulated through self frequency conversion to ensure the micro positive pressure requirement of the air-conditioning space, the variable frequency exhaust fan 2 is linked with the solution type total heat recovery device 1 and the air conditioning box 3, when the solution type total heat recovery device 1 or the air conditioning box 3 is opened, the variable frequency exhaust fan 2 is closed, when the solution type total heat recovery device 1 and the air conditioning box 3 are both closed, when the transition season is reached, the solution type total heat recovery device 1 is closed, the variable frequency exhaust fan 2 and the air conditioning box 3 are operated, at the moment, the second electric double-position regulating valve 18 is closed, and the third electric double-position regulating valve 19 is opened;
(4) For the solution type total heat recovery device 1, a salt solution with hygroscopic property is used as a medium, and the solution type total heat recovery device has the functions of sterilization and dust removal. Taking summer conditions as an example: in the upper unit spray module 15, indoor exhaust air contacts with solution in the filler, the solution is cooled and concentrated, the exhaust air is heated and humidified and then is discharged to the outside, the cooled and concentrated solution enters the first heat exchange coil section 13 through the upper unit spray module 15 and is subjected to indirect heat exchange with low-temperature refrigerants to be cooled further, the lower unit spray module 4 is in filler contact with outdoor fresh air, the solution is heated and diluted, the fresh air is cooled and dehumidified to a working condition point required by a system, the solution returns to a solution tank at the bottom again, and the solution reaches the upper unit spray module 15 through the solution pump 5 and the second heat exchange coil section 14 to complete circulation. Fresh air is processed to a working point required by the system and then sent to a required room. When the room is under a working condition in summer, when the wet load of the room is large, the A-side condensation waste heat can be utilized to heat the salt solution in the second heat exchange coil section 14, after the vapor pressure of the surface of the solution is reduced, more moisture is taken away by the return air in the upper unit spray module 15, and the fresh air dehumidification force is increased.
The working condition in winter is similar to the working condition in summer, except that the heat and mass transfer directions are different, the fresh air is heated and humidified, and the exhaust air is cooled and dehumidified; the heat exchange parameters such as the temperature, flow and heat exchange tube and row number of the refrigerant or the heating medium in the device 14 and the device 15 can be adjusted corresponding to the outdoor fresh air parameter and the change of the exhaust air volume and the design parameter value required to be reached after the independent fresh air is processed, so as to meet the design requirement.
When meeting rooms and other places with high wet loads, such as intensive personnel and the like, the independent fresh air system is arranged, the room wet load requirement can not be met yet, and the dehumidification force is increased under the condition, so that the fresh air is treated in a solution dehumidification mode, the large dehumidification depth can be realized, and the total heat recovery mode is adopted, so that the system is more energy-saving.
In the solution regeneration process and the process of further precooling after the solution regeneration, the solution needs to be subjected to heat exchange treatment respectively, the process needs a refrigerant and a heating medium, and in the process, the heating medium can utilize industrial waste heat or a refrigerating unit to condense and reject heat; the refrigerant can utilize the air conditioning system to store condensed water so as to achieve the energy-saving effect.
Compared with the conventional air conditioning all-air system, the air conditioning all-air system has the advantages that the communicating pipe is arranged between the closed room and the open area, so that the pressure balance in the closed room is realized, and the condition that fresh air is difficult to send due to large indoor positive pressure is avoided; in addition, a bidirectional exhaust passage is arranged, and exhaust is directly discharged outdoors when the direct-current ventilation is adopted in the transition season, so that the requirements of winter and summer exhaust heat exchange and switching of direct-current ventilation states in the transition season are met.
In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and are not to be construed as limiting the present application.
The foregoing describes specific embodiments of the present utility model. It is to be understood that the utility model is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the utility model. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily without conflict.
Claims (10)
1. The utility model provides a variable air volume air conditioning system of supplementary new trend air supply which characterized in that includes: the device comprises a solution type total heat recovery device (1), a variable-frequency exhaust fan (2), an air conditioning BOX (3), a lower unit spray module (4), a solution pump (5), a first electric multi-blade regulating air valve (6), a second electric multi-blade regulating air valve (7), a first air conditioning air supply tail end VAV-BOX (8), a first fresh air supply tail end VAV-BOX (9), a temperature sensor (10), carbon dioxide, a relative humidity sensor (11), a first electric double-position regulating valve (12), a first heat exchange coil section (13), a second heat exchange coil section (14), an upper unit spray module (15), a communicating pipe (16), a pressure sensor (17), a second electric double-position regulating valve (18), a third electric double-position regulating valve (19), a fourth electric double-position regulating valve (20), an air supply main pipe pressure sensor (21), a variable-frequency fan (22) in a heat exchange unit, a variable-frequency exhaust fan (23) in the heat exchange unit and an auxiliary fresh air temperature sensor (24);
the solution type total heat recovery device (1) is arranged on a roof machine room layer;
the variable-frequency exhaust fan (2) is electrically connected with the pressure sensor (17);
the variable-frequency exhaust fan (2) and the first electric double-position regulating valve (12) are connected with the first heat exchange coil section (13) and the solution type total heat recovery device (1);
the air conditioning box (3) is electrically connected with the main air supply pipe pressure sensor (21), and the main air supply pipe pressure sensor (21) is arranged at the near-end side of the air supply pipeline;
the lower unit spray module (4), the first heat exchange coil section (13), the second heat exchange coil section (14) and the upper unit spray module (15) are connected through a solution pump (5) by a solution transmission and distribution pipeline;
the variable-frequency exhaust fan (2), the air conditioning box (3), the first electric multi-blade regulating air valve (6), the second electric multi-blade regulating air valve (7) and the first electric double-position regulating valve (12) are communicated through an air pipe;
the first air conditioner air supply end VAV-BOX (8) and the first fresh air supply end VAV-BOX (9) are arranged above the room decoration ceiling;
the first air conditioner air supply tail end VAV-BOX (8) is electrically connected with the temperature sensor (10);
the temperature sensor (10) and the carbon dioxide and relative humidity sensor (11) are arranged below the inner decoration surface of the service area;
the carbon dioxide and relative humidity sensor (11) is connected with the second fresh air supply tail end VAV-BOX;
the communicating pipe (16) is arranged at the partition wall between the closed room and the public open room and is positioned above the decorative surface;
the first air-conditioning air supply terminal VAV-BOX (8) and the second air-conditioning air supply terminal VAV-BOX are arranged in an open office area, a personal office and a meeting room;
the first fresh air supply end VAV-BOX (9) and the second fresh air supply end VAV-BOX are only arranged in a personal office or a meeting room, and correspond to the load characteristics in the room;
the solution type total heat recovery device (1) is linked with a fourth electric double-position regulating valve (20);
the lower unit spraying module (4), the solution pump (5), the variable-frequency blower (22) in the heat exchange unit and the auxiliary fresh air temperature sensor (24) are adjacently arranged;
the heat exchange unit inner frequency conversion exhaust fan (23), the auxiliary fresh air temperature sensor (24) and the second heat exchange coil section (14) are electrically connected with the carbon dioxide and relative humidity sensor (11).
2. The variable air volume air conditioning system for assisting fresh air supply according to claim 1, wherein the two ends of the communicating pipe (16) are provided with silencing elbows.
3. The variable air volume air conditioning system for auxiliary fresh air supply according to claim 1, wherein the variable frequency exhaust fan (23) in the heat exchange unit is interlocked with the auxiliary fresh air temperature sensor (24).
4. The variable air volume air conditioning system for auxiliary fresh air supply according to claim 1, wherein the first heat exchange coil section (13) is electrically coupled with an auxiliary fresh air temperature sensor (24).
5. The variable air volume air conditioning system for assisting fresh air supply according to claim 1, wherein the variable frequency exhaust fan (23) in the heat exchange unit is interlocked with the variable frequency exhaust fan (2).
6. The variable air volume air conditioning system for assisting fresh air supply according to claim 1, wherein the first electric multi-vane regulating air valve (6) is interlocked with the second electric multi-vane regulating air valve (7).
7. The variable air volume air conditioning system for assisting fresh air supply according to claim 1, wherein the pressure sensor (17) is arranged in a middle area with personnel activity in a public open area and is interlocked with the first electric double-position regulating valve (12) and the variable-frequency exhaust fan (2).
8. The variable air volume air conditioning system for assisting fresh air supply according to claim 1, wherein the first electric multi-blade regulating air valve (6) and the second electric multi-blade regulating air valve (7) are respectively arranged on a fresh air pipe of the air conditioner and an exhaust pipe of the air conditioner, the first electric multi-blade regulating air valve (6) and the second electric multi-blade regulating air valve (7) are interlocked, and correspondingly connected with the air conditioning box (3), so that the total opening is ensured to be (100)%.
9. The variable air volume air conditioning system for assisting fresh air supply according to claim 1, wherein the first electric double-position regulating valve (12) is opened or closed in linkage with the variable frequency exhaust fan (2);
the second electric double-position regulating valve (18) is opened or closed in linkage with the solution type total heat recovery device (1);
the third electric double-position regulating valve (19) is linked with the second electric double-position regulating valve (18), when the second electric double-position regulating valve (18) is closed, the third electric double-position regulating valve (19) is opened, and when the second electric double-position regulating valve (18) is opened, the third electric double-position regulating valve (19) is closed.
10. The variable air volume air conditioning system for assisting fresh air supply according to claim 1, wherein the first air conditioning supply end VAV-BOX (8), the second air conditioning supply end VAV-BOX, the first fresh air supply end VAV-BOX (9) and the second fresh air supply end VAV-BOX are all pressure independent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322202395.0U CN220397706U (en) | 2023-08-15 | 2023-08-15 | Variable air volume air conditioning system for assisting fresh air supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322202395.0U CN220397706U (en) | 2023-08-15 | 2023-08-15 | Variable air volume air conditioning system for assisting fresh air supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220397706U true CN220397706U (en) | 2024-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322202395.0U Active CN220397706U (en) | 2023-08-15 | 2023-08-15 | Variable air volume air conditioning system for assisting fresh air supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220397706U (en) |
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2023
- 2023-08-15 CN CN202322202395.0U patent/CN220397706U/en active Active
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