CN210740778U - Year-round refrigeration roof type air conditioning unit - Google Patents
Year-round refrigeration roof type air conditioning unit Download PDFInfo
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- CN210740778U CN210740778U CN201921557744.8U CN201921557744U CN210740778U CN 210740778 U CN210740778 U CN 210740778U CN 201921557744 U CN201921557744 U CN 201921557744U CN 210740778 U CN210740778 U CN 210740778U
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Abstract
The utility model discloses a year-round refrigeration roof type air conditioning unit, including compressor, condensing equipment, throttling mechanism, evaporation plant and the control unit, be equipped with high pressure sensor between compressor and the condensing equipment, condensing equipment includes first fin type heat exchanger, axial fan and EC motor, evaporation plant includes second fin type heat exchanger, centrifugal fan and AC motor; the control unit is matched with the high-pressure sensor, the EC motor and the centrifugal fan blade to realize the stable control of the condensation pressure, so that the roof type air conditioning unit can realize the purpose of year-round refrigeration.
Description
Technical Field
The utility model belongs to the technical field of the air conditioner, especially, relate to a year-round refrigeration roof formula air conditioning unit.
Background
The air-cooled air conditioning unit, condensing pressure receives ambient temperature to influence greatly during refrigeration, but the unit compressor receives the interval restriction of normal operating, and condensing pressure can not hang down excessively, so when ambient temperature is lower, the unable normal operating of refrigeration, conventional unit all can restrict the refrigeration operation interval, can't realize the year round refrigeration.
At present, the conventional solution for realizing year-round refrigeration is to control the condensation pressure by starting and stopping a fan, so that year-round refrigeration is realized, when the condensation pressure is too low, one fan is closed, and the condensation pressure is increased by a method of reducing air volume; when the condensing pressure is too high, a fan is started, and the condensing pressure is reduced to a proper range by a method of increasing the air quantity.
The second solution is to control the rotating speed of the condensing fan through the fan speed regulator so as to regulate the condensing air quantity, but the corresponding fan is an AC fan, the speed regulation interval and the effect are limited, and the cost of the fan speed regulator is very high.
Above two kinds of schemes can both tentatively realize the function of refrigerating all the year round, but the effect is limited because the regulation curve of amount of wind is discontinuous, and the regulation interval is limited moreover, and the cost is on the high side again simultaneously.
Therefore, a year-round refrigeration roof type air conditioning unit is needed to realize continuous adjustment of air volume in a wider operation area under the premise of acceptable cost, so that the condensing pressure is stably controlled, and the normal operation of the unit is realized.
SUMMERY OF THE UTILITY MODEL
The utility model provides a roof type air conditioning unit capable of refrigerating all the year round, which overcomes the defects of the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a year-round refrigeration roof type air conditioning unit comprises a compressor, a condensing device, a throttling mechanism, an evaporating device and a control unit, wherein a high-pressure sensor is arranged between the compressor and the condensing device, the condensing device comprises a first fin type heat exchanger, an axial flow fan and an EC motor, and the evaporating device comprises a second fin type heat exchanger, a centrifugal fan and an AC motor; the high-temperature and high-pressure gas discharged by the compressor is changed into high-pressure liquid through a condensing device, then changed into a low-temperature and low-pressure gas-liquid two-phase working medium through a throttling mechanism, and then changed into low-temperature and low-pressure gas through an evaporating device and returned to the compressor; the control unit is matched with the high-pressure sensor, the EC motor and the centrifugal fan blade to realize the stable control of the condensation pressure, so that the roof type air conditioning unit can realize the purpose of year-round refrigeration; the control unit reads high-pressure through the high-pressure sensor in real time, compares the high-pressure with target pressure, and then adjusts the speed of the EC motor; the EC motor can realize stepless speed regulation, thereby realizing continuous and smooth change of condensation air quantity and controlling the condensation pressure in a smaller stable region.
The compressor, the condensing device, the throttling mechanism and the evaporating device are connected through a copper pipe; under the action of the copper pipe, all the components on the unit are connected into a whole, so that all the components are mutually coordinated and matched for use, and the reliability of the overall operation of the unit is improved.
A drying filter is arranged between the throttling mechanism and the condensing device, the drying filter comprises a shell and end covers arranged at two ends of the shell, two groups of metal nets are arranged in the shell, and a drying agent is arranged between the two groups of metal nets; under the arrangement of the drying filter, the filter plays a role in filtering the coolant passing through the filter, impurities and moisture in the coolant are removed, and the influence on the normal operation of the unit caused by the impurities mixed into the unit is avoided; the drying agent is fixed under the action of the metal mesh, so that the drying agent is stably arranged in the shell, and the moisture in the coolant is absorbed when the coolant passes through the drying agent.
A first mounting groove is formed in the inner wall of the shell, a first mounting disc is arranged in the first mounting groove, a second mounting groove is formed in the first mounting disc, the group of metal nets are arranged in the second mounting groove, a fixing ring is arranged in the second mounting groove, and the fixing ring is connected with the second mounting groove through threads; when the metal net is installed, the metal net is placed in the first installation groove, then the fixing ring is installed in the first installation groove, the fixing ring is rotated, the fixing ring is fixed in the second installation groove under the threaded fit, and therefore the metal net is pressed in the second installation groove, and connection between the metal net and the second installation groove is completed; and then, the first installation disc is installed in the first installation groove, the end cover is covered, and the first installation disc is fixed in the first installation groove under the action of the end cover, so that the installation of the metal mesh is completed.
A first connecting plate is arranged on the first mounting disc, the first connecting plate is of a cylindrical structure, a plurality of first push rods are arranged on the inner wall of the first connecting plate, and a plurality of fan blades are arranged on the other side of the first mounting disc; when coolant flow is great, the coolant enters into the casing and directly strikes on first mounting disc, and partial coolant strikes on the flabellum, promotes first mounting disc rotation under the flabellum effect, and first mounting disc drives first connecting plate and rotates, and first push rod rotates along with first connecting plate, makes the push rod contact with the drier in the casing, plays the stirring effect to the drier, makes the drier fully contact with the coolant to absorb moisture in the coolant fast, promote the dry effect of coolant, it is extravagant to reduce the drier.
One end of the first connecting plate is provided with a connecting ring, the inner wall of the first mounting groove is provided with a first connecting groove matched with the connecting ring, and a plurality of balls are arranged in the first connecting groove; after the first mounting disc is arranged in the first mounting groove, the connecting ring is inserted into the first connecting groove, so that the connecting ring is matched with the first connecting groove, and the connecting effect of the first mounting disc and the first mounting groove is improved; the inner wall of the first connecting groove is in contact with the side wall of the connecting ring through the balls, so that the friction force between the first connecting groove and the connecting ring is reduced, the first connecting plate can rotate more easily under the impact of the coolant, the drying agent is stirred, and the drying agent is fully utilized.
The two ends of the shell are respectively provided with a second connecting groove, the end cover is provided with a second connecting plate matched with the second connecting groove, and the second connecting plate is connected with the second connecting groove through threads; under mutually supporting of second spread groove and second connecting plate, realize being connected dismantled of casing and end cover, can be convenient pull down the end cover from the casing, and then take out first mounting disc from first mounting groove, maintain first mounting disc and metal mesh, the while can be convenient change the drier, guarantee the drying effect of filter to the coolant.
A connecting rod is arranged on the inner wall of the end cover at one end of the shell, a mounting plate is arranged on the connecting rod, a through hole is formed in the mounting plate, a second push rod penetrates through the through hole, a push plate is arranged at one end of the second push rod, a limiting plate is arranged at the other end of the second push rod, and a reset spring is arranged on the push plate; when the coolant flows out from the shell, the coolant directly impacts the push plate to enable the push plate to move towards the outer side of the shell, when the coolant flow is reduced or the coolant does not flow into the shell any more, the push plate is pushed to move towards the direction of the metal mesh under the action of the reset spring, the push plate is enabled to impact on the metal mesh, vibration is generated on the metal mesh to shake off the drying agent on the metal mesh, the drying agent is prevented from being blocked on meshes of the metal mesh, the smoothness of the metal mesh is guaranteed, the coolant can normally pass through the filter, and the use reliability of the filter is guaranteed.
The utility model has the advantages of it is following: the control unit is matched with the high-pressure sensor, the EC motor and the centrifugal fan blade to realize the stable control of the condensation pressure, so that the roof type air conditioning unit can realize the purpose of year-round refrigeration.
Drawings
Fig. 1 is a schematic flow chart of the present invention.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a schematic diagram of the control module of the present invention.
Fig. 4 is the utility model discloses EC motor + axial fan structural schematic.
Fig. 5 is a control logic diagram of the present invention.
Fig. 6 is a schematic structural view of the drying filter of the present invention.
Fig. 7 is a schematic cross-sectional view of the filter-drier according to the present invention.
Fig. 8 is an enlarged view of fig. 7 at a.
Fig. 9 is an enlarged view of fig. 7 at B.
Fig. 10 is an enlarged view of fig. 7 at C.
Detailed Description
As shown in fig. 1-10, a year-round refrigeration roof-type air conditioning unit includes a compressor 1, a condensing device 2, a throttling mechanism 4, an evaporating device 3 and a control unit 7, wherein a high-pressure sensor 6 is disposed between the compressor 1 and the condensing device 2, the condensing device 2 includes a first fin-type heat exchanger 23, an axial flow fan 21 and an EC motor 22, the EC motor 22 can achieve continuous stepless regulation, drives the axial flow fan 21 to rotate, generates condensing air volume, the condensing air volume affects the condensing effect, thereby affecting the condensing pressure, the control unit 7 detects the condensing pressure of the running unit through the high-pressure sensor 6, compares the condensing pressure with a set target pressure, judges the pressure change trend, sends an instruction to the EC motor 22 according to a preset logic, and regulates the rotating speed until the condensing pressure is controlled in a set area; the evaporation device 3 comprises a second finned heat exchanger 33, a centrifugal fan 31 and an AC motor 32; the high-temperature and high-pressure gas discharged by the compressor is changed into high-pressure liquid through a condensing device, then changed into a low-temperature and low-pressure gas-liquid two-phase working medium through a throttling mechanism, and then changed into low-temperature and low-pressure gas through an evaporating device and returned to the compressor; the control unit is matched with the high-pressure sensor, the EC motor and the centrifugal fan blade to realize the stable control of the condensation pressure, so that the roof type air conditioning unit can realize the purpose of year-round refrigeration; the control unit reads high-pressure through the high-pressure sensor in real time, compares the high-pressure with target pressure, and then adjusts the speed of the EC motor; the EC motor can realize stepless speed regulation, thereby realizing continuous and smooth change of condensation air quantity and controlling the condensation pressure in a smaller stable region.
The compressor 1, the condensing device 2, the throttling mechanism 4 and the evaporating device 3 are connected through a copper pipe; under the action of the copper pipe, all the components on the unit are connected into a whole, so that all the components are mutually coordinated and matched for use, and the reliability of the overall operation of the unit is improved.
A drying filter 5 is arranged between the throttling mechanism 4 and the condensing device 2, the drying filter 5 comprises a shell 51 and end covers 52 arranged at two ends of the shell 51, two groups of metal nets 55 are arranged in the shell 51, and a drying agent is arranged between the two groups of metal nets 55; under the arrangement of the drying filter, the filter plays a role in filtering the coolant passing through the filter, impurities and moisture in the coolant are removed, and the influence on the normal operation of the unit caused by the impurities mixed into the unit is avoided; the drying agent is fixed under the action of the metal mesh, so that the drying agent is stably arranged in the shell, and the moisture in the coolant is absorbed when the coolant passes through the drying agent.
A first mounting groove is formed in the inner wall of the shell 51, a first mounting disc 53 is arranged in the first mounting groove, a second mounting groove is formed in the first mounting disc 53, the group of metal nets are arranged in the second mounting groove, a fixing ring 551 is arranged in the second mounting groove, and the fixing ring 551 is connected with the second mounting groove through threads; when the metal net is installed, the metal net is placed in the first installation groove, then the fixing ring is installed in the first installation groove, the fixing ring is rotated, the fixing ring is fixed in the second installation groove under the threaded fit, and therefore the metal net is pressed in the second installation groove, and connection between the metal net and the second installation groove is completed; and then, the first installation disc is installed in the first installation groove, the end cover is covered, and the first installation disc is fixed in the first installation groove under the action of the end cover, so that the installation of the metal mesh is completed.
A first connecting plate 531 is arranged on the first mounting plate 53, the first connecting plate 531 is in a cylindrical structure, a plurality of first push rods 532 are arranged on the inner wall of the first connecting plate 531, and a plurality of fan blades are arranged on the other side of the first mounting plate 53; when coolant flow is great, the coolant enters into the casing and directly strikes on first mounting disc, and partial coolant strikes on the flabellum, promotes first mounting disc rotation under the flabellum effect, and first mounting disc drives first connecting plate and rotates, and first push rod rotates along with first connecting plate, makes the push rod contact with the drier in the casing, plays the stirring effect to the drier, makes the drier fully contact with the coolant to absorb moisture in the coolant fast, promote the dry effect of coolant, it is extravagant to reduce the drier.
A connecting ring 5311 is arranged at one end of the first connecting plate 531, a first connecting groove matched with the connecting ring 5311 is arranged on the inner wall of the first mounting groove, and a plurality of balls are arranged in the first connecting groove; after the first mounting disc is arranged in the first mounting groove, the connecting ring is inserted into the first connecting groove, so that the connecting ring is matched with the first connecting groove, and the connecting effect of the first mounting disc and the first mounting groove is improved; the inner wall of the first connecting groove is in contact with the side wall of the connecting ring through the balls, so that the friction force between the first connecting groove and the connecting ring is reduced, the first connecting plate can rotate more easily under the impact of the coolant, the drying agent is stirred, and the drying agent is fully utilized.
Two ends of the shell 51 are respectively provided with a second connecting groove, the end cover 52 is provided with a second connecting plate matched with the second connecting groove, and the second connecting plate is connected with the second connecting groove through threads; under mutually supporting of second spread groove and second connecting plate, realize being connected dismantled of casing and end cover, can be convenient pull down the end cover from the casing, and then take out first mounting disc from first mounting groove, maintain first mounting disc and metal mesh, the while can be convenient change the drier, guarantee the drying effect of filter to the coolant.
A connecting rod 521 is arranged on the inner wall of the end cover 52 at one end of the shell 51, a mounting plate 522 is arranged on the connecting rod 521, a through hole is formed in the mounting plate 522, a second push rod 523 penetrates through the through hole, a push plate 5231 is arranged at one end of the second push rod 523, a limiting plate 5232 is arranged at the other end of the second push rod 5231, and a return spring is arranged on the push plate 5231; when the coolant flows out from the shell, the coolant directly impacts the push plate to enable the push plate to move towards the outer side of the shell, when the coolant flow is reduced or the coolant does not flow into the shell any more, the push plate is pushed to move towards the direction of the metal mesh under the action of the reset spring, the push plate is enabled to impact on the metal mesh, vibration is generated on the metal mesh to shake off the drying agent on the metal mesh, the drying agent is prevented from being blocked on meshes of the metal mesh, the smoothness of the metal mesh is guaranteed, the coolant can normally pass through the filter, and the use reliability of the filter is guaranteed.
The casing other end is equipped with the third mounting groove, is equipped with the second mounting disc in the third mounting groove, and in the second mounting disc was located to the metal mesh of the casing other end, the connected mode of metal mesh and second mounting disc was the same with the connected mode of first mounting disc and metal mesh.
When the drying agent is filled into the shell, the metal mesh is firstly filled into the first mounting disc, then the first mounting disc is filled into the first mounting groove, then the end cover is filled into one side of the first mounting groove, the first mounting disc is fixed, the drying agent is filled into the shell, after the drying agent is filled, the second mounting disc is filled into the third mounting groove, so that the drying agent is fixed between the two metal meshes, and then the end cover at the other end is connected onto the shell, so that the filling of the drying agent in the filter is completed.
The working process of the unit is as follows:
p1: powering on the unit;
p2: initializing a machine set;
p3: starting up;
p4: detecting the operating condensing pressure of the unit;
p4.1: if the operating pressure is in a preset reasonable interval, the current state is maintained, and the rotating speed of the EC motor is unchanged;
p4.2: if the operating pressure is lower than the preset interval, the rotating speed of the EC motor needs to be reduced, so that the air volume is reduced;
p4.3: if the operation pressure is higher than the preset interval, the rotating speed of the EC motor needs to be increased, so that the air quantity is increased.
Claims (8)
1. The utility model provides a year-round refrigeration roof formula air conditioning unit, includes compressor (1), condensing equipment (2), throttle mechanism (4), evaporation plant (3) and control unit (7), its characterized in that: the high-pressure air conditioner is characterized in that a high-pressure sensor (6) is arranged between the compressor (1) and the condensing device (2), the condensing device (2) comprises a first finned heat exchanger (23), an axial flow fan (21) and an EC motor (22), and the evaporating device (3) comprises a second finned heat exchanger (33), a centrifugal fan (31) and an AC motor (32).
2. A year round refrigerated rooftop air conditioning unit as recited in claim 1 further comprising: the compressor (1), the condensing device (2), the throttling mechanism (4) and the evaporating device (3) are connected through a copper pipe.
3. A year round refrigerated rooftop air conditioning unit as recited in claim 1 further comprising: a drying filter (5) is arranged between the throttling mechanism (4) and the condensing device (2), the drying filter (5) comprises a shell (51) and end covers (52) arranged at two ends of the shell (51), two groups of metal nets (55) are arranged in the shell (51), and a drying agent is arranged between the two groups of metal nets (55).
4. A year round refrigerated rooftop air conditioning unit as set forth in claim 3 wherein: the inner wall of the shell (51) is provided with a first mounting groove, a first mounting disc (53) is arranged in the first mounting groove, a second mounting groove is formed in the first mounting disc (53), the group of metal nets are arranged in the second mounting groove, a fixing ring (551) is arranged in the second mounting groove, and the fixing ring (551) is connected with the second mounting groove through threads.
5. A year round refrigerated rooftop air conditioning unit as set forth in claim 4 wherein: be equipped with first connecting plate (531) on first mounting disc (53), first connecting plate (531) are the cylindrical structure, be equipped with a plurality of first push rods (532) on first connecting plate (531) inner wall, first mounting disc (53) opposite side is equipped with a plurality of flabellums.
6. A year round refrigerated rooftop air conditioning unit as set forth in claim 5 wherein: one end of the first connecting plate (531) is provided with a connecting ring (5311), the inner wall of the first mounting groove is provided with a first connecting groove matched with the connecting ring (5311), and a plurality of balls are arranged in the first connecting groove.
7. A year round refrigerated rooftop air conditioning unit as set forth in claim 3 wherein: the two ends of the shell (51) are respectively provided with a second connecting groove, the end cover (52) is provided with a second connecting plate matched with the second connecting groove, and the second connecting plate is connected with the second connecting groove through threads.
8. A year round refrigerated rooftop air conditioning unit as set forth in claim 3 wherein: be equipped with connecting rod (521) on end cover (52) the inner wall of casing (51) one end, be equipped with mounting panel (522) on connecting rod (521), be equipped with the through-hole on mounting panel (522), wear to be equipped with second push rod (523) in the through-hole, second push rod (523) one end is equipped with push pedal (5231), and the other end is equipped with limiting plate (5232), be equipped with reset spring on push pedal (5231).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921557744.8U CN210740778U (en) | 2019-09-19 | 2019-09-19 | Year-round refrigeration roof type air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921557744.8U CN210740778U (en) | 2019-09-19 | 2019-09-19 | Year-round refrigeration roof type air conditioning unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210740778U true CN210740778U (en) | 2020-06-12 |
Family
ID=71008746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921557744.8U Active CN210740778U (en) | 2019-09-19 | 2019-09-19 | Year-round refrigeration roof type air conditioning unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210740778U (en) |
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2019
- 2019-09-19 CN CN201921557744.8U patent/CN210740778U/en active Active
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