CN211624208U - Anti-freezing air valve of ventilation air-conditioning system - Google Patents
Anti-freezing air valve of ventilation air-conditioning system Download PDFInfo
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- CN211624208U CN211624208U CN201922440184.4U CN201922440184U CN211624208U CN 211624208 U CN211624208 U CN 211624208U CN 201922440184 U CN201922440184 U CN 201922440184U CN 211624208 U CN211624208 U CN 211624208U
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Abstract
The utility model discloses a ventilation air conditioning system blast gate that prevents frostbite, including the valve body the both ends of valve body are provided with the flange interface respectively left side in the valve body is provided with first valve disk group right side in the valve body is provided with second valve disk group leave the air interval that is equipped with the certain distance between first valve disk group and the second valve disk group the middle part of valve body is provided with actuating mechanism, this actuating mechanism pass through drive mechanism respectively with first valve disk group, second valve disk group are connected, actuating mechanism passes through drive mechanism control the aperture of first valve disk group, second valve disk group. The two groups of valve plates with air intervals are arranged in the valve body, so that the heat transfer coefficient difference between air and the valve plates is fully utilized, and the problems of condensation in summer and freezing in winter of the air valve are effectively solved.
Description
Technical Field
The utility model relates to the technical field of air conditioning systems, in particular to an anti-freezing air valve of a ventilation air conditioning system, which is mainly used for ventilation in severe cold and cold areas and places where the air valve of the air conditioning system near the outer wall is likely to be frozen; and the ventilation and air-conditioning system is used in the areas with warm summer and warm winter and in the areas with cold summer and warm winter, and is close to the places where the electric air valves on the outer wall are likely to dew.
Background
In general ventilation and air conditioning systems, fresh air pipes or exhaust pipes close to the outer wall are provided with air valves for reasons such as condensation on metal surfaces and indoor and outdoor wall surfaces due to the intrusion of hot and humid air outdoors in summer and for reasons such as reduction of indoor temperature or frost damage of heating pipes (often seen in fresh air fans) due to the intrusion of cold air indoors in winter when the system stops operating. When the system is in operation, the valve is opened, and when the system is stopped, the valve is closed, so that the problems are hopefully avoided.
However, in actual engineering, the following situation has long occurred: after the air valve is arranged, in summer, condensation is easily generated on the surface of the air valve in a hot and humid area, so that decoration is damaged or other problems are caused; in winter, in severe cold and cold regions, the indoor temperature is not reduced, the heating coil (mostly seen in a new fan) is not frozen, but frost is formed on the inner surface (indoor air side) of the air valve due to obvious temperature difference and humidity difference of air on two sides of the air valve, if the outdoor temperature is too low, the inner surface (indoor air side) of the valve can be frozen for a long time, so that the valve is completely frozen, when the system needs to be started to operate, the valve cannot be normally opened due to freezing, other measures need to be taken to thaw the valve first, and then the system can be normally operated, and the system is very inconvenient.
Disclosure of Invention
The utility model aims at providing a ventilation air conditioning system blast gate that prevents frostbite can stop above the blast gate condense in summer, freeze the problem winter, and simple structure is effective, and production, simple to operate are feasible.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a ventilation air conditioning system blast gate that prevents frostbite, its key lies in: the valve comprises a valve body, wherein flange interfaces are respectively arranged at two ends of the valve body, a first valve plate group is arranged on the left side in the valve body, a second valve plate group is arranged on the right side in the valve body, an air interval with a certain distance is reserved between the first valve plate group and the second valve plate group, an execution mechanism is arranged in the middle of the valve body, the execution mechanism is respectively connected with the first valve plate group and the second valve plate group through a transmission mechanism, and the execution mechanism controls the opening degree of the first valve plate group and the opening degree of the second valve plate group through the transmission mechanism.
Further, the length of the air interval is 300-800 mm.
Further, the length of the air gap is 500 mm.
Furthermore, the actuating mechanism and the transmission mechanism are both arranged on the outer side of the valve body.
Furthermore, the actuating mechanism is communicated with the control room of the air conditioning unit.
Furthermore, the actuating mechanism is an electric actuating mechanism, a pneumatic actuating mechanism or a hydraulic actuating mechanism.
The utility model discloses a show the effect and be: through two groups of valve plates with air intervals arranged in the valve body, the heat transfer coefficient difference between the air and the valve plates is fully utilized, the problems of condensation in summer and freezing in winter of the air valve are effectively solved, and the air valve is simple and effective in structure, novel in design and convenient and feasible to produce and install.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a usage state diagram of the present invention.
Detailed Description
The following provides a more detailed description of the embodiments and the operation of the present invention with reference to the accompanying drawings.
As shown in fig. 1, the anti-freezing air valve of the ventilation air conditioning system comprises a valve body 1, flange connectors 2 are respectively arranged at two ends of the valve body 1, a first valve plate group 3 is arranged at the left side in the valve body 1, a second valve plate group 4 is arranged at the right side in the valve body 1, an air space 5 with a certain distance is reserved between the first valve plate group 3 and the second valve plate group 4, an executing mechanism 6 is arranged at the middle part of the valve body 1, the executing mechanism 6 is respectively connected with the first valve plate group 3 and the second valve plate group 4 through a transmission mechanism 7, the executing mechanism 6 and the transmission mechanism 7 are both arranged at the outer side of the valve body 1, the executing mechanism 6 is communicated with an air conditioning unit control chamber 8 and sends out a control signal through the air conditioning unit control chamber 8 when necessary, and the executing mechanism 6 controls the first valve plate group 3, the second valve plate group 4 through the transmission mechanism 7 according, Opening degree of the second valve disc group 4.
Preferably, the length of the air gap 5 is 300-800 mm. In this example, the length of the air gap 5 is 500 mm.
Preferably, the actuator 6 is an electric actuator 6, and the electric actuator 6 is convenient to control and has high control precision.
Referring to fig. 2, when the anti-freezing air valve according to the embodiment is used, the flange connector 2 at one end of the valve body 1 is connected with the inner air pipe 9, the flange connector 2 at the other end is connected with the outer air pipe 10, the outer air pipe 10 is embedded in the outer wall 11, and the end of the outer air pipe 10, which is located outside the outer wall 11, is covered with the rain-proof louver 12.
The anti-freezing principle of the anti-freezing air valve is as follows:
1) in summer, in hot and humid areas, the temperature of the first valve plate group 3 close to the indoor is low, the temperature of the outer surface (the surface close to the outer wall) of the first valve plate group may be lower than the dew point temperature of the air in the internal air interval 5, condensation is theoretically generated, but the total condensation amount is limited to partial water vapor in the air interval 5, and the partial water vapor is very limited (because the volume of the internal air interval 5 is relatively very small), so that obvious condensation water cannot be generated on the outer surface of the first valve plate group 3; meanwhile, because the heat transfer coefficient of air in the internal air space 5 is very low relative to the heat transfer coefficient of the valve plate, the temperature of the second valve plate group 4 is not lower than the dew point temperature of outdoor air, and no condensed water exists on the outer surface (i.e. the surface close to the outer wall) of the second valve plate group 4.
2) In winter, in severe cold and cold regions, the temperature of the second valve plate group 4 close to the outer wall is low, the temperature of the inner surface (i.e. the surface far away from the outer wall) of the second valve plate group may be lower than the dew point temperature of the air in the internal air interval 5, for example, the outdoor temperature is too low, frost may be formed, but the amount of the total frost is limited to only part of water vapor in the air interval 5, and the amount of the part of water vapor is limited (because the volume of the internal air interval 5 is relatively very small), so that obvious frosting phenomenon cannot be generated on the inner surface of the second valve plate group 4; meanwhile, the heat transfer coefficient of the air of the internal air space 5 is very low relative to the heat transfer coefficient of the valve plate, so that the temperature of the first valve plate group 3 is not lower than the dew point temperature of the indoor air, and the inner surface (namely the surface far away from the outer wall) of the first valve plate group is not condensed and is not frosted or frozen.
In the embodiment, the first valve plate group 3 and the second valve plate group 4 with the air space 5 are arranged in the valve body 1, so that the heat transfer coefficient difference between air and the valve plates is fully utilized, and the problems of condensation in summer and freezing in winter of the air valve are effectively avoided.
The technical scheme provided by the utility model is introduced in detail above. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (6)
1. The utility model provides a ventilation air conditioning system blast gate that prevents frostbite which characterized in that: the valve comprises a valve body, wherein flange interfaces are respectively arranged at two ends of the valve body, a first valve plate group is arranged on the left side in the valve body, a second valve plate group is arranged on the right side in the valve body, an air interval with a certain distance is reserved between the first valve plate group and the second valve plate group, an execution mechanism is arranged in the middle of the valve body, the execution mechanism is respectively connected with the first valve plate group and the second valve plate group through a transmission mechanism, and the execution mechanism controls the opening degree of the first valve plate group and the opening degree of the second valve plate group through the transmission mechanism.
2. The ventilation air conditioning system anti-freeze damper as claimed in claim 1, wherein: the length of the air interval is 300-800 mm.
3. The ventilation air conditioning system anti-freeze damper as claimed in claim 2, wherein: the length of the air gap is 500 mm.
4. The ventilation air conditioning system anti-freeze damper as claimed in claim 1, wherein: the actuating mechanism and the transmission mechanism are both arranged on the outer side of the valve body.
5. The ventilation air conditioning system anti-freeze damper as claimed in claim 1, wherein: and the actuating mechanism is communicated with the control room of the air conditioning unit.
6. A ventilation air conditioning system anti-freezing air valve according to any one of claims 1 to 5, characterized in that: the actuating mechanism is an electric actuating mechanism, a pneumatic actuating mechanism or a hydraulic actuating mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922440184.4U CN211624208U (en) | 2019-12-30 | 2019-12-30 | Anti-freezing air valve of ventilation air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922440184.4U CN211624208U (en) | 2019-12-30 | 2019-12-30 | Anti-freezing air valve of ventilation air-conditioning system |
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| CN211624208U true CN211624208U (en) | 2020-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922440184.4U Active CN211624208U (en) | 2019-12-30 | 2019-12-30 | Anti-freezing air valve of ventilation air-conditioning system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112361560A (en) * | 2020-11-09 | 2021-02-12 | 同方股份有限公司 | Underground space anti-condensation control system and control method thereof |
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2019
- 2019-12-30 CN CN201922440184.4U patent/CN211624208U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112361560A (en) * | 2020-11-09 | 2021-02-12 | 同方股份有限公司 | Underground space anti-condensation control system and control method thereof |
| CN112361560B (en) * | 2020-11-09 | 2023-08-22 | 同方股份有限公司 | Control method of underground space condensation prevention control system |
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