CN217654067U - Heat pump type air curtain system - Google Patents
Heat pump type air curtain system Download PDFInfo
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- CN217654067U CN217654067U CN202221758906.6U CN202221758906U CN217654067U CN 217654067 U CN217654067 U CN 217654067U CN 202221758906 U CN202221758906 U CN 202221758906U CN 217654067 U CN217654067 U CN 217654067U
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Abstract
The utility model belongs to the technical field of the shielding equipment is made to the air current, a heat pump type air curtain system is disclosed, heat transfer device's cryogen export intercommunication compressor, the compressor is used for discharging the CO after compressing 2 A refrigerant; an inlet and an outlet of the heat exchange device are communicated with a refrigerant pipeline, a throttling device is arranged on the refrigerant pipeline, and the refrigerant pipeline is communicated with the air curtain device; wherein, the refrigerant pipeline connects the compressor, the heat exchange device, the throttling device and the air curtain device into a closed circulation loop, and CO is filled in the refrigerant pipeline 2 Refrigerant to form heat pump circulation to provide heat source for the air curtain device. When the variable-frequency centrifugal fan is used in winter, when the cold air speed detected by the air speed sensor is large, the rotating speed of the variable-frequency centrifugal fan and the opening angle of the louver at the air outlet are intelligently adjusted, and the outdoor cold air speed and the air outlet speed of the air curtain are mutually offset, so that the outdoor cold air is completely prevented from entering the room, and the ideal effect of the air curtain is realized.
Description
Technical Field
The utility model belongs to the technical field of the shielding equipment is made to the air current, especially, relate to a heat pump type air curtain system.
Background
The air curtain is a heating device which generates high-speed airflow through a cross-flow fan or a centrifugal fan to form a curtain-shaped airflow. The air curtain is installed at the door opening of a building needing heat insulation, and can prevent cold and hot air exchange between the indoor space and the outdoor space and prevent dirty air or dust from entering the indoor space by generating air flow to block the indoor and outdoor air.
In traditional air curtain, the heater sets up in air outlet department, and the air current carries out the heat exchange through the heater from air return opening department after accelerating the wind channel with higher speed to form one air curtain form air current, thereby play the separation effect. Because the outdoor cold air flow entering the room has a certain speed, and the air flow of the air curtain is in a fixed direction and cannot be adjusted, under the interaction of the air flows, a large amount of cold air can enter the room at the lower part of the air curtain, so that the heat load in the room is increased, and the air curtain loses the effect of blocking the cold air. Meanwhile, the traditional air curtain is mostly a fixed-frequency fan, namely, the fan works at the same rotating speed all the time after being opened, and when the air speed of outdoor cold air is lower, unnecessary loss of building energy consumption is caused.
The first prior art provides an air curtain based on coupling of an air source heat pump and electric heating, and an authorization notice number is as follows: CN211953175U, including air source heat pump, blower and electric heating unit, wherein the condenser, blower and electric heating unit in the air source heat pump are assembled in a casing, the blower is arranged at one side of the casing, the condenser and electric heating unit are arranged in the inner cavity of the casing, and the condenser is arranged between the blower and electric heating unit.
Second in the prior art provides a photovoltaic curtain wall and waste heat pump utilization system based on building envelope, the authorization notice number: the building comprises a CN205980441U, and is characterized by comprising a wall support arranged on the outer layer of the building, wherein an air source heat pump is arranged at the top of the building, a gap is formed between the wall support and the outer layer of the building, a photovoltaic curtain wall is laid on the inner side surface of the wall support, and a plurality of air inlets which are all communicated with the gap are arranged below the photovoltaic curtain wall, so that an air interlayer is formed between the photovoltaic curtain wall and the outer layer of the building; the photovoltaic curtain wall is characterized in that a pipeline communicated with the air interlayer is arranged at the upper end of the photovoltaic curtain wall, the other end of the pipeline is connected to the air source heat pump, the pipeline is provided with a valve, a temperature measurement control system and a drainage fan, and the temperature measurement control system is connected with the valve.
In summary, most of the conventional hot air curtain heat sources are heat pumps combined with electric heating methods or utilize waste heat, and the operation of the traditional hot air curtain heat sources in severe cold areas without waste heat utilization or in cold outdoor climates is large in energy consumption, which is mainly reflected in the following aspects:
(1) Because the opening and the direction of the air port of the traditional air curtain can not be adjusted according to the actual meteorological parameters outside the room, a large amount of cold air can enter the room at the lower part, the indoor heat load is increased, and the air curtain loses the function of blocking the cold air.
(2) Traditional air curtain is mostly the fan of deciding frequently, opens the back fan promptly and carries out work with the same rotational speed all the time, when outdoor cold air wind speed is lower, has lead to the loss of unnecessary building energy consumption.
(3) The traditional air curtain heat source is mostly electric heating and hot water heater, and the electric heater is directly used to make the operation power consumption of hot air curtain itself huge, uses hot water heater, because the characteristics of air curtain intermittent operation, very easily causes the freeze injury to make hot water heat exchanger break because of the improper operation maintenance, causes the accident.
The difficulty in solving the technical problems is as follows: the prior art is difficult to realize the separation effect of the air curtain in a real sense through an effective mode. In the aspect of energy saving, a control principle is difficult to find to realize the control of the variable frequency fan, a control mode is difficult to find in the starting and stopping operation to ensure that the hot air curtain is automatically started and stopped as required, and an energy-saving and environment-friendly heat source is difficult to find in the utilization of the heater.
The significance for solving the technical problems is as follows: the air curtain really realizes the blocking effect of indoor and outdoor air, reduces indoor heat load, reduces the use energy consumption of the air curtain through an ingenious control principle, and utilizes direct expansion CO 2 The heat pump provides a heat source for the air curtain heater, and the effects of intelligence, convenience, energy conservation and emission reduction are achieved.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problems in the related art, the disclosed embodiments provide a heat pump type air curtain system. The technical scheme is as follows:
the utility model provides a heat pump type air curtain system is provided with heat transfer device, heat transfer device' sThe refrigerant outlet is communicated with a compressor which is used for discharging compressed CO 2 A gas;
an inlet and an outlet of the heat exchange device are communicated with a refrigerant pipeline, a throttling device is mounted on the refrigerant pipeline, and the upper end of the refrigerant pipeline is communicated with an air curtain device; wherein, the refrigerant pipeline connects the compressor, the heat exchange device, the throttling device and the air curtain device into a closed circulation loop, and CO is filled in the refrigerant pipeline 2 Refrigerant to form heat pump circulation to provide heat source for the air curtain device.
In one embodiment, a first finned heat exchanger is installed inside the heat exchange device, and a heat exchange fan is installed at the upper end of the first finned heat exchanger.
In one embodiment, the air curtain device is provided with a shell, one side of the shell is embedded with an air inlet, and the other side of the shell opposite to the air inlet is embedded with an air outlet; the air outlet is provided with a movable louver with adjustable angle, and the movable louver is used for forming a hot air curtain which takes an air source heat pump as a heat source and can adjust the air outlet angle;
the inside mounting of casing has automatic control device and temperature sensor, automatic control device's signal acquisition end connects temperature sensor respectively and installs at indoor and outdoor air velocity transducer.
In one embodiment, a second finned heat exchanger is hermetically arranged in the shell, and a variable frequency centrifugal fan is arranged at the upper end of the second finned heat exchanger.
In one embodiment, the variable-frequency centrifugal fan comprises an impeller which is connected with a variable-frequency motor, and the variable-frequency motor drives the impeller to rotate; the variable frequency motor is connected with an automatic control device.
In one embodiment, a shutter motor is mounted on the movable shutter, and the control end of the shutter motor is connected with an automatic control device; an output shaft of the shutter motor is movably connected with movable shutters through linear guide rails, and the movable shutters are arranged on the air outlet through fixed shafts; the movable louver is arranged on the linear guide rail through the movable shaft, and the air outlet angle of the movable louver is controlled after the movable louver is analyzed by the automatic control device.
Combine foretell all technical scheme, the utility model discloses the advantage that possesses and positive effect are:
compared with the prior art, the utility model has the following advantages, see table 1.
TABLE 1
Simulation experiment shows, the utility model discloses when air curtain air outlet angle can be adjusted in good time at any time the outer wind direction, near the temperature at gate promotes to some extent, but winter heat load in the greatly reduced building. According to a small-sized movable garage, 6 shifts are carried out every day, and two groups of hot air curtains are opened every time. At least about 22393 degrees of electricity are saved each year.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic structural diagram of a heat pump type air curtain system according to an embodiment of the present invention;
fig. 2 is a schematic view of a temperature field at a building gate when an air outlet angle of an air curtain provided by an embodiment of the present invention is fixed;
fig. 3 is a schematic view of an air velocity field at a building gate when an air curtain outlet angle provided by an embodiment of the present invention is fixed; wherein fig. 3 (a) is the horizontal plane air velocity at the large gate 0.1m from the ground; fig. 3 (b) is the vertical air flow velocity distribution at the large gate;
fig. 4 is a schematic view of a temperature field at a building gate when an air outlet angle of an air curtain provided by an embodiment of the present invention is variable;
fig. 5 is a schematic view of an air velocity field at a gate of a building when an air curtain outlet angle is variable according to an embodiment of the present invention, wherein fig. 5 (a) is a horizontal plane air velocity at a position 0.1m from the ground at the gate; fig. 5 (b) is the vertical air velocity distribution at the gate;
in the figure: 1. a compressor; 2. a heat exchange device; 3. a throttling device; 4. a heat exchange fan; 5. a refrigerant conduit; 6. a first finned heat exchanger; 7. an air curtain device; 8. a variable frequency centrifugal fan; 9. an air inlet; 10. a temperature sensor; 11. an automatic control device; 12. a shutter motor; 13. a movable louver; 14. an air outlet; 15. a fixed shaft; 16. a movable shaft; 17. a linear guide rail; 18. a second finned heat exchanger; 19. and a wind speed sensor.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be embodied in many other forms different from the embodiments described herein and similar modifications may be made by those skilled in the art without departing from the spirit and scope of the invention and, therefore, the invention is not limited to the embodiments disclosed below.
The utility model provides a heat pump type air curtain system, outdoor wind speed, the wind direction signal input automatic control device 11 that wind speed sensor appearance will gather according to recording the suitable export wind speed of wind speed size regulation fan frequency output. And according to the measured wind direction parameters (the numerical value of a horizontal included angle between the measured wind direction parameters and the plane where the gate is located), calculating, analyzing and outputting execution signals to control the air outlet angle of the movable louver 13 to be vertical to the horizontal wind direction. The air speed sensor 19 is used for sensing the air speed at the door opening to identify the door opening and closing state, when the air speed at the door opening is larger than a certain value, the door opening can be judged to be large, and at the moment, the air curtain fan is opened. When the wind speed at the door is lower than a certain value, the door is judged to be closed, and the air curtain fan stops running.
A door opening signal is transmitted to an automatic control device 11 through a temperature sensor 10, and the automatic control device 11 outputs a signal to start a heat pump system and a variable-frequency centrifugal fan 8; indoor air enters the air curtain device 7 through the air inlet 9, is accelerated by the centrifugal fan and then flows out through the air outlet 14 to form high-speed curtain-shaped airflow which is separated from outdoor cold air. When the wind speed sensor 19 detects that the wind speed of the outdoor cold air is high, a wind speed signal is transmitted to the automatic control device 11, the automatic control device 11 feeds back a signal and adjusts the louver motor 12, the self-hanging louver is driven by the linear guide rail 17 to increase the wind outlet angle and increase the rotating speed of the centrifugal fan, so that the high-speed gas flowing out of the shell and the wind speed of the outdoor cold air are counteracted, and the outdoor cold air is completely blocked from entering the room. When the wind speed sensor 19 detects that the outdoor wind speed is small, the centrifugal fan rotation speed is reduced by the automatic control device 11.
The technical solution of the present invention will be further described with reference to the following embodiments.
Examples
As shown in fig. 1, the heat pump type air curtain system includes: introducing CO 2 The compressor 1, the heat exchange device 2, the air curtain device 7, the throttling device 3 and the refrigerant pipeline 5 are discharged after compression;
the compressor 1, the heat exchange device 2, the throttling device 3 and the air curtain device 7 are connected into a closed circulation loop by a refrigerant pipeline 5, and the refrigerant pipeline 5 is filled with CO 2 A refrigerant forming a heat pump cycle providing a heat source for the air curtain;
the air curtain device 7 includes: the device comprises an air inlet 9, a second fin heat exchanger 18, a variable frequency centrifugal fan 8, an air outlet 14 of an adjustable louver, an automatic control device 11, a temperature sensor 10 and an air speed sensor 19; the variable frequency centrifugal fan 8, the automatic control device 11, the second finned heat exchanger 18 and the movable louver 13 with adjustable angles are integrally and hermetically arranged in the shell. The top of the shell is embedded with an air inlet 9, one side of the shell is embedded with an air outlet 14, a temperature sensor 10 is embedded on the shell, and a movable louver 13 with adjustable angle is installed on the air outlet 14 to form a hot air curtain which takes an air source heat pump as a heat source and can adjust the air outlet angle. The signal acquisition end of the automatic control device 11 is also connected with an air speed sensor 19 and a temperature sensor 10, the air speed sensor 19 is respectively arranged indoors and outdoors, and the temperature sensor 10 is embedded on the shell.
The heat exchange device 2 comprises a first fin heat exchanger 6, a second fin heat exchanger 18 and a heat exchange fan 4 which are connected in a group, and the variable-frequency centrifugal fan 8 comprises an impeller; and the variable frequency motor drives the impeller to rotate, and the automatic control device 11 is connected with the variable frequency motor.
The movable louver 13 with the adjustable angle is provided with a louver motor 12, and the control end of the louver motor 12 is connected with an automatic control device 11; an output shaft of the louver motor 12 is movably connected with the movable louvers 13 with adjustable angles through linear guide rails 17, and the movable louvers 13 with adjustable angles are arranged on the air outlet 14 through a fixed shaft 15; the angle-adjustable movable shutter 13 is installed on a linear guide rail 17 through a movable shaft 16, and the movable shutter 13 inputs collected outdoor wind speed and wind direction signals into the automatic control device 11 according to an outdoor wind speed sensor and outputs execution signals to control the shutter air outlet angle through calculation and analysis.
The signal acquisition end of the automatic control device 11 is connected with an air speed sensor 19 and a temperature sensor 10, and the air speed sensor 19 is arranged indoors or outdoors; and the temperature sensor 10 is embedded on the shell body, and the temperature sensor 10 is embedded on the shell body. And controlling the starting, the stopping and the rotating speed of the fan according to the door opening and closing state and the indoor and outdoor wind speed and direction.
The working principle is as follows:
when a building door is opened, a door opening signal is transmitted to the automatic control device 11 through the temperature sensor 10 (when the temperature is lower than 0 ℃), the automatic control device 11 outputs a signal to start the heat pump system, and the variable-frequency centrifugal fan 8 starts. Indoor air enters the air curtain device 7 through the air inlet 9, is accelerated by the centrifugal fan and then flows out through the air outlet 14 to form high-speed curtain-shaped airflow, so that the high-speed curtain-shaped airflow and outdoor cold air are separated. When the wind speed sensor 19 detects that the wind speed of the outdoor cold air is large, a wind speed signal is transmitted to the automatic control device 11, the automatic control device 11 feeds back a signal and adjusts the louver motor 12, the self-hanging louver is driven by the linear guide rail 17 to increase the wind outlet angle and increase the rotating speed of the centrifugal fan, so that the high-speed gas flowing out of the shell and the outdoor wind speed are counteracted, the outdoor cold air is completely blocked from entering the room, and the working effect of the air curtain is ensured. When the wind speed sensor 19 detects that the outdoor wind speed is low, the rotating speed of the centrifugal fan is reduced through the automatic control device 11, and the energy consumption of the fan is reduced on the premise that the outdoor cold air is blocked.
The utility model provides a heat pump type air curtain system, when using winter, adopts CO 2 The air source heat pump is a heat source, so that the direct use of electric heating is avoided, the energy consumption of air curtain operation is greatly reduced, and the problem of freezing injury caused by the use of hot water heating is avoided. When the cold air speed detected by the air speed sensor 19 is larger, the rotating speed of the variable frequency centrifugal fan 8 and the opening angle of the louver at the air outlet 14 are intelligently adjusted, and the outdoor cold air speed and the air outlet speed of the air curtain are mutually offset to completely prevent the outdoor cold air from entering the room, so that the ideal effect of the air curtain is realized, and the unnecessary heat load energy consumption is reduced. Meanwhile, when the outdoor cold air speed is low, the centrifugal fan is intelligently adjusted to be operated at a low speed, the operation energy consumption of the fan is reduced, and the effects of energy conservation and emission reduction are achieved. The utility model discloses a 7 intelligent air curtain devices simple structure, intelligence is convenient, and is energy-conserving high-efficient, and applicable in various occasions realizes the ideal effect of air curtain.
The variable frequency centrifugal fan 8 and the second finned heat exchanger 18 are arranged in the shell and are integrally and hermetically arranged in the shell; the air outlet 14 is embedded on the shell, and the angle-adjustable shutter is movably arranged on the air outlet 14. An air velocity sensor 19 is provided outside the housing. When the heat pump type air curtain system is used in winter, the second finned heat exchanger 18 is used as an air curtain heat source, when a gate is opened, an air curtain is automatically started in a linkage mode, and when the gate is closed, the air curtain stops in a linkage mode. When the cold air speed detected by the air speed sensor 19 is larger, the rotating speed of the variable frequency centrifugal fan 8 and the opening angle of the louver at the air outlet 14 are intelligently adjusted, and the outdoor cold air speed and the air outlet speed of the air curtain are mutually offset to completely prevent the outdoor cold air from entering the room, so that the ideal effect of the air curtain is realized, and the unnecessary heat load energy consumption is reduced. When the outdoor cold air speed is low, the centrifugal fan is intelligently adjusted to be operated at a low speed, the operation energy consumption of the fan is reduced, and the effects of energy conservation and emission reduction are achieved.
The positive effects of the present invention will be further described with reference to the simulation experiment.
Simulation experiment
1. Simulation airflow simulation of different working conditions of an air curtain of a gate is shown as a temperature field at the gate of a building when the air outlet angle of the air curtain is fixed in the figure 2; as shown in fig. 3, the air velocity field at the gate of the building when the air curtain outlet angle is fixed, wherein fig. 3 (a) shows the air velocity at the horizontal plane at the gate 0.1m away from the ground; fig. 3 (b) is the vertical air velocity distribution at the gate; as shown in fig. 4, the temperature field at the gate of the building when the air curtain outlet angle is variable.
As shown in the air velocity field at the building gate when the air curtain outlet angle is variable in fig. 5, wherein the air velocity at the horizontal plane at the position 0.1m away from the ground at the gate of fig. 5 (a) is shown; fig. 5 (b) is a vertical air flow velocity distribution at the large gate.
The simulation shows that when the angle of the air curtain air outlet 14 can be timely adjusted at any time, the temperature near the gate is raised, and the heat load in winter in the building can be greatly reduced.
2. Example energy consumption
According to the side-blown air curtain samples of different manufacturers, under the conditions that the door height is 6.5m and the blowing air speed is 12m/s, the average air quantity of the single-side air curtain is 20000m 3 And h, the power consumption of the fan is 3kW, and for the hot air curtain, the power consumption of the electric heating air curtain and the designed heating capacity of the hot water air curtain are about 80kW under the condition of ensuring the air outlet temperature of 35 ℃. The calculation is carried out by opening the gate for 15min every time the train works. The outdoor working temperature is lower than-15 ℃.
According to a small-sized movable garage, 6 shifts are carried out every day, and two groups of hot air curtains are opened every time. At least about 22393 degrees of electricity are saved each year.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure should be limited only by the attached claims.
Claims (6)
1. The heat pump type air curtain system is characterized by being provided with a heat exchange device (2), a refrigerant outlet of the heat exchange device (2) is communicated with a compressor (1), and the compressor (1) is used for discharging compressed CO 2 A gas;
an inlet and an outlet of the heat exchange device (2) are communicated with a refrigerant pipeline (5), a throttling device (3) is installed on the refrigerant pipeline (5), and the upper end of the refrigerant pipeline (5) is communicated with an air curtain device (7); wherein, a refrigerant pipeline (5) connects the compressor (1), the heat exchange device (2), the throttling device (3) and the air curtain device (7) into a closed circulation loop, and CO is filled in the refrigerant pipeline (5) 2 Refrigerant to form a heat pump cycle to provide a heat source for the air curtain device (7).
2. A heat pump type air curtain system according to claim 1, wherein said heat exchanging means (2) is internally provided with a first fin heat exchanger (6), and an upper end of said first fin heat exchanger (6) is provided with a heat exchanging fan (4).
3. A heat pump type air curtain system according to claim 1, wherein said air curtain device (7) is provided with a housing having one side thereof fitted with the air intake opening (9) and the other side thereof fitted with the air outlet opening (14) opposite to the air intake opening (9); the air outlet (14) is provided with a movable louver (13) with an adjustable angle, and the movable louver (13) is used for forming a hot air curtain which takes an air source heat pump as a heat source and can adjust the air outlet angle;
the wind speed sensor is characterized in that an automatic control device (11) and a temperature sensor (10) are installed inside the shell, and a signal acquisition end of the automatic control device (11) is connected with the temperature sensor (10) and an outdoor wind speed sensor (19) respectively.
4. A heat pump type air curtain system according to claim 3, wherein said housing is internally hermetically fitted with a second finned heat exchanger (18), an upper end of said second finned heat exchanger (18) being fitted with a variable frequency centrifugal fan (8).
5. A heat pump type air curtain system according to claim 4, characterized in that said variable frequency centrifugal fan (8) comprises an impeller connected to a variable frequency motor which drives the impeller in rotation; the variable frequency motor is connected with an automatic control device (11).
6. A heat pump type air curtain system according to claim 3, wherein said movable louver (13) is provided with a louver motor (12), and a control end of said louver motor (12) is connected to an automatic control device (11); an output shaft of the shutter motor (12) is movably connected with movable shutters (13) through linear guide rails (17), and the movable shutters (13) are arranged on an air outlet (14) through fixed shafts (15); the movable shutter (13) is arranged on the linear guide rail (17) through a movable shaft (16), and the air outlet angle of the movable shutter (13) is controlled after the movable shutter is analyzed by the automatic control device (11).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221758906.6U CN217654067U (en) | 2022-07-08 | 2022-07-08 | Heat pump type air curtain system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221758906.6U CN217654067U (en) | 2022-07-08 | 2022-07-08 | Heat pump type air curtain system |
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| CN217654067U true CN217654067U (en) | 2022-10-25 |
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| CN202221758906.6U Active CN217654067U (en) | 2022-07-08 | 2022-07-08 | Heat pump type air curtain system |
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| CN (1) | CN217654067U (en) |
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2022
- 2022-07-08 CN CN202221758906.6U patent/CN217654067U/en active Active
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