CN220871008U - Full-new wind direct expansion unit based on electronic expansion valve - Google Patents
Full-new wind direct expansion unit based on electronic expansion valve Download PDFInfo
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- CN220871008U CN220871008U CN202322591884.XU CN202322591884U CN220871008U CN 220871008 U CN220871008 U CN 220871008U CN 202322591884 U CN202322591884 U CN 202322591884U CN 220871008 U CN220871008 U CN 220871008U
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- 239000007788 liquid Substances 0.000 claims description 32
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 239000003507 refrigerant Substances 0.000 abstract description 37
- 238000004378 air conditioning Methods 0.000 abstract description 12
- 230000008016 vaporization Effects 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 238000009834 vaporization Methods 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 238000005057 refrigeration Methods 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Air Conditioning Control Device (AREA)
Abstract
The application relates to an electronic expansion valve-based full-fresh air direct expansion unit, which is characterized in that a refrigerant is transmitted through a circulating pipe network between an indoor unit and an outdoor unit, and the indoor temperature is adjusted by utilizing the liquefaction heat release of the refrigerant in the outdoor unit and the vaporization heat absorption of the indoor unit. In the process that the refrigerant moves from the outdoor unit to the indoor unit, the electronic expansion valve completely responds to the actual opening requirement of the unit in operation, so that the maximum performance of vaporizing the refrigerant of the unit is fully exerted for most of the time. Specifically, the electronic expansion valve adjusts the opening degree of the electronic expansion valve according to the comparison of the actual suction superheat degree and the target superheat degree, so that the electronic expansion valve can be quickly adjusted to an optimal opening degree value, and the efficient and reliable operation of the unit is ensured. The application solves the defect that the maximum performance of the air conditioning unit cannot be fully exerted in most of time due to insufficient fine adjustment of the flow of the refrigerating medium in the refrigerating pipeline.
Description
Technical Field
The application relates to the technical field of air conditioners, in particular to an all-new-air direct expansion unit based on an electronic expansion valve.
Background
The full fresh air direct expansion air conditioning unit is a central air conditioner suitable for various industries and commercial places such as hotels, shops, office buildings, factories and the like, has the advantages of a large central air conditioner and a small split machine, has uniform air flow organization in the whole air conditioner air flow coverage space, and can introduce fresh air to improve indoor air quality. The air conditioner and the air duct can be completely concealed and combined with interior decoration, and meanwhile, the air conditioner and the air duct can be independently controlled in a partitioned mode, and the operation is simple and flexible.
However, most of the manufacturers currently adopt a thermal expansion valve, and the thermal expansion valve cannot fully respond to the actual opening demand of the air conditioning unit in operation because the flow of the refrigeration medium in the regulating refrigeration pipeline is not fine enough, so that the maximum performance of the air conditioning unit cannot be fully exerted for most of the time. The application provides an electronic expansion valve-based full fresh air direct expansion type air conditioning unit, which aims to overcome the defect that the maximum performance of the air conditioning unit cannot be fully exerted in most of time due to insufficient fine adjustment of the flow of a refrigerating medium in a refrigerating pipeline of the traditional full fresh air direct expansion type air conditioning unit.
Disclosure of utility model
The electronic expansion valve-based full fresh air direct expansion air conditioning unit is necessary to overcome the defect that the maximum performance of the air conditioning unit cannot be fully exerted in most of time due to insufficient fine adjustment of the flow of a refrigerating medium in a refrigerating pipeline of the traditional full fresh air direct expansion air conditioning unit.
An all-new-wind direct expansion unit based on an electronic expansion valve, comprising:
The indoor unit comprises an evaporator and a first motor, wherein the first motor is attached to the evaporator and is externally connected with a circuit board;
The outdoor unit comprises an electronic expansion valve, a condenser, a second motor, a four-way valve and a compressor, wherein the electronic expansion valve is externally connected with a circuit board, the electronic expansion valve comprises a first end and a second end, the first end of the electronic expansion valve is communicated with an inlet of the evaporator, the second end of the electronic expansion valve is communicated with an outlet of the condenser, the inlet of the condenser is communicated with the first end of the four-way valve, the second motor is attached to the condenser, the second motor is externally connected with the circuit board, the second end of the four-way valve is communicated with an outlet of the compressor, the third end of the four-way valve is communicated with the inlet of the compressor, and the fourth end of the four-way valve is communicated with the outlet of the evaporator.
The application relates to an all-fresh-air direct expansion unit based on an electronic expansion valve, which is characterized in that a refrigerant is transmitted through a circulating pipe network between an indoor unit and an outdoor unit, the refrigerant is utilized to liquefy and release heat in the outdoor unit, the indoor unit is utilized to absorb heat in vaporization (refrigeration) or the outdoor unit, and the indoor temperature is regulated in liquefaction and release heat (heating) of the indoor unit. In the process that the refrigerant moves from the outdoor unit to the indoor unit, the electronic expansion valve completely responds to the actual opening requirement of the unit in operation, so that the maximum performance of vaporizing the refrigerant of the unit is fully exerted for most of the time. Specifically, the electronic expansion valve adjusts the opening degree of the electronic expansion valve according to the comparison of the actual suction superheat degree and the target superheat degree, so that the electronic expansion valve can be quickly adjusted to an optimal opening degree value, and the efficient and reliable operation of the unit is ensured. In fact, the electronic expansion valve is arranged between the evaporator and the condenser, and can be sensitively adapted to the working efficiency of the compressor, so that the performance of exerting the maximum vaporized refrigerant of the electronic expansion valve is further realized. The application solves the defect that the maximum performance of the air conditioning unit cannot be fully exerted in most of time due to insufficient fine adjustment of the flow of the refrigerating medium in the refrigerating pipeline.
Drawings
Fig. 1 is a schematic structural diagram of an all-new-wind direct expansion unit based on an electronic expansion valve according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of an all-new-wind direct expansion unit based on an electronic expansion valve according to another embodiment of the present application.
Fig. 3 is a schematic structural diagram of an indoor unit of an all-fresh-air direct expansion unit based on an electronic expansion valve according to an embodiment of the present application.
Fig. 4 is a schematic structural diagram of a secondary outdoor unit of an all-new-wind direct expansion unit based on an electronic expansion valve according to an embodiment of the present application.
Reference numerals:
100-indoor units; 110-an evaporator; 111-a first branch pipe network; 111 a-a first dispensing head;
112-a second branch pipe network; 112 a-a second dispense head; 112 b-solenoid valve; 113-a first tee;
114-a second tee; 120-a first motor; 130-a circuit board; 140-a secondary evaporator;
150-a secondary fan; 151-first joint; 152-a second linker; 200-an outdoor unit;
210-an electronic expansion valve; 220-a condenser; 230-a second motor; 240-a four-way valve; 250-compressor;
260-copper filter; 270-drying the filter; 280-a reservoir; 291-first needle valve;
292-high voltage switch; 293-gas-liquid separator; 294-second needle valve; 295-third needle valve;
296-low pressure sensor; 297-a low voltage switch; 300-a first temperature sensor;
301-a second temperature sensor; 302-a third temperature sensor; 303-fourth temperature sensor;
304-a fifth temperature sensor; 310-a secondary outdoor unit; 311-third linker; 312-fourth joint.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
The application provides a full fresh air direct expansion unit based on an electronic expansion valve 210.
As shown in fig. 1, in an embodiment of the present application, an indoor unit 100 of a fresh air direct expansion unit based on an electronic expansion valve 210 includes an indoor unit 100 and an outdoor unit 200.
The indoor unit 100 includes an evaporator 110 and a first motor 120, the first motor 120 is attached to the evaporator 110, and the first motor 120 is externally connected to a circuit board 130.
The outdoor unit 200 includes an electronic expansion valve 210, a condenser 220, a second motor 230, a four-way valve 240 and a compressor 250, the electronic expansion valve 210 is externally connected to the circuit board 130, the electronic expansion valve 210 includes a first end and a second end, the first end of the electronic expansion valve 210 is communicated with the inlet of the evaporator 110, the second end of the electronic expansion valve 210 is communicated with the outlet of the condenser 220, the inlet of the condenser 220 is communicated with the first end of the four-way valve 240, the second motor 230 is attached to the condenser 220, the second motor 230 is externally connected to the circuit board 130, the second end of the four-way valve 240 is communicated with the outlet of the compressor 250, the third end of the four-way valve 240 is communicated with the inlet of the compressor 250, and the fourth end of the four-way valve 240 is communicated with the outlet of the evaporator 110.
Specifically, the refrigerant is transmitted through the circulation pipe network between the indoor unit 100 and the outdoor unit 200, and the heat of liquefaction of the refrigerant in the outdoor unit 200 is used to absorb heat by vaporization (refrigeration) of the indoor unit 100 or by chemical heat absorption of the refrigerant in the outdoor unit 200, so that the indoor temperature is adjusted by heat of liquefaction (heating) of the indoor unit 100. The electronic expansion valve 210 completely responds to the actual opening demand of the unit during the movement of the outdoor unit 200 to the indoor unit 100 (cooling) or during the movement of the indoor unit 100 to the outdoor unit 200 (heating), so that the maximum performance of vaporizing the refrigerant is fully exerted for most of the time of the unit. Specifically, the electronic expansion valve 210 adjusts its opening according to the comparison between the actual suction superheat degree and the target superheat degree, so as to quickly adjust itself to an optimal opening value, and ensure efficient and reliable operation of the unit.
The embodiment relates to a full fresh air direct expansion unit based on an electronic expansion valve 210, wherein the electronic expansion valve 210 completely responds to the actual opening requirement of the unit during operation, and the maximum performance of vaporized refrigerant of the unit is fully exerted for most of the time. Specifically, the electronic expansion valve 210 adjusts its opening according to the comparison between the actual suction superheat degree and the target superheat degree, so as to quickly adjust itself to an optimal opening value, and ensure efficient and reliable operation of the unit. In practice, the electronic expansion valve 210 is disposed between the evaporator 110 and the condenser 220, and can be adapted to the working efficiency of the compressor 250 more sensitively, so as to further realize the performance of exerting the maximum vaporized refrigerant of the electronic expansion valve 210. The application solves the defect that the maximum performance of the air conditioning unit cannot be fully exerted in most of time due to insufficient fine adjustment of the flow of the refrigerating medium in the refrigerating pipeline.
As shown in fig. 1 to 4, in an embodiment of the present application, the evaporator 110 includes a first branch pipe network 111, a second branch pipe network 112, a first tee 113, and a second tee 114. The first end of the second tee 114 is in communication with the first end of the electronic expansion valve 210. The second end of the second tee 114 is in communication with the inlet of the first branch pipe network 111. The third end of the second tee 114 is connected to the inlet of the second branch pipe network 112. The first end of the first tee 113 is connected to the fourth end of the four-way valve 240. The second end of the first tee 113 is connected to the outlet of the first branch pipe network 111. The third end of the first tee 113 is connected to the outlet of the second branch pipe network 112.
Specifically, the evaporator 110 includes a first branch pipe network 111 and a second branch pipe network 112. In practice, the fresh air direct expansion unit based on the electronic expansion valve 210 may be an independent refrigeration system formed by a single compressor 250 or a plurality of refrigeration systems formed by a plurality of compressors 250. It may be a single refrigeration system composed of a single evaporator 110 or a plurality of refrigeration systems composed of a plurality of evaporators 110 connected in parallel.
This embodiment relates to an evaporator 110. The multi-pipeline evaporator 110 is beneficial to improving the suitability of the full fresh air direct expansion unit based on the electronic expansion valve 210 to the indoor pattern of a user. This ensures a good fit of the multi-line evaporator 110 due to the high ability of the electronic expansion valve 210 to adjust the optimal opening value.
As shown in fig. 1 to 4, in an embodiment of the present application, the first branch pipe network 111 includes a first distribution head 111a. The first distribution head 111a is disposed on a link between the second end of the second tee 114 and the inlet of the first branch pipe network 111. The second branch pipe network 112 includes a second distribution head 112a and a solenoid valve 112b. The second distribution head 112a is disposed on a link between the third end of the second tee 114 and the inlet of the second branch pipe network 112. The solenoid valve 112b is disposed in a link between the second dispensing head 112a and the third end of the second tee 114.
Specifically, with the introduction of multiple refrigeration systems formed by parallel connection of multiple evaporators 110, it is necessary to realize orderly adjustment of different branch pipe networks, so that the electromagnetic valve 112b is required to adjust the on/off of the second branch pipe network 112, and it should be noted that the electromagnetic valve 112b is used to adjust the on/off of the second branch pipe network 112 by receiving high and low levels.
The distributing head distributes the refrigerant from the throttling mechanism through the liquid distributing capillary tube and then uniformly transmits the refrigerant to each flow of the evaporator, so that uniform and equal liquid supply to the evaporator is realized, the refrigerant can absorb heat by maximum efficiency evaporation, and the performance of the evaporator is optimized, and the optimal refrigerating effect is achieved. .
This embodiment relates to the solenoid valve 112b. The electromagnetic valve 112b is used for adjusting the on-off state of the second branch pipe network 112 to realize the suitability of the all fresh air direct expansion unit based on the electronic expansion valve 210 to the indoor pattern of the user. This ensures a good fit of the multi-line evaporator 110 due to the high ability of the electronic expansion valve 210 to adjust the optimal opening value.
As shown in fig. 1 to 4, in an embodiment of the present application, the outdoor unit 200 further includes a copper filter 260, a dry filter 270, and a reservoir 280. The reservoir 280 is disposed in a link between the first end of the electronic expansion valve 210 and the first end of the second tee 114. The copper filter 260 is disposed in a link between the reservoir 280 and the first end of the electronic expansion valve 210. The dry filter 270 is disposed in a link between the second end of the electronic expansion valve 210 and the outlet of the condenser 220.
This embodiment relates to a copper filter 260 and a dry filter 270. Actually, the copper filter 260 and the dry filter 270 are respectively disposed at two sides of the electronic expansion valve 210, so as to remove moisture impurities in the refrigerant, and protect the evaporator 110, the electronic expansion valve 210 and the condenser 220. The liquid storage 280 is used for storing liquid refrigerant to prevent the system from being excessively high in pressure during heating.
As shown in fig. 1 to 4, in an embodiment of the present application, the outdoor unit 200 further includes a first needle valve 291, a fourth temperature sensor 303, and a high pressure switch 292. The fourth temperature sensor 303 and the high voltage switch 292 are externally connected to the circuit board 130. The high-pressure switch 292 is provided in a link between the first needle valve 291 and an outlet of the compressor 250.
The present embodiment relates to a fourth temperature sensor 303. A fourth temperature sensor 303 is installed between the four-way valve 240 and the exhaust side of the compressor 250 to enable actual exhaust temperature measurement of the unit. The opening of the electronic expansion valve 210 is adjusted through the upper limit and the lower limit of the actual temperature and the exhaust temperature, so that the electronic expansion valve is quickly adjusted to an optimal opening value, and the efficient and reliable operation of the unit is ensured.
As shown in fig. 1 to 4, in an embodiment of the present application, the outdoor unit 200 further includes a gas-liquid separator 293, a second needle valve 294, a third needle valve 295, a low pressure sensor 296, a fifth temperature sensor 304, and a low pressure switch 297. The gas-liquid separator 293 is disposed in a link between the third end of the four-way valve 240 and the inlet of the compressor 250. The low pressure sensor 296 circumscribes the circuit board 130. The fifth temperature sensor 304 is externally connected to the circuit board 130. The low voltage switch 297 is external to the circuit board 130. The second needle valve 294 is provided at the gas outlet end of the gas-liquid separator 293. The third needle valve 295 is disposed at the gas inlet end of the gas-liquid separator 293.
The present embodiment relates to a second needle valve 294, a third needle valve 295, a low pressure sensor 296, a fifth temperature sensor 304, and a low pressure switch 297. A low pressure sensor 296 and a fifth temperature sensor 304 are installed between the four-way valve 240 and the suction side of the compressor 250 to enable actual suction superheat determination of the unit. The opening of the electronic expansion valve 210 is adjusted through the actual suction superheat degree and the target superheat degree, so that the electronic expansion valve is quickly adjusted to an optimal opening value, and the efficient and reliable operation of the unit is ensured.
As shown in fig. 1 to 4, in an embodiment of the present application, the second needle valve 294 is provided at a link between the gas-liquid separator 293 and the inlet of the compressor 250. The third needle valve 295 is disposed in a link between the gas-liquid separator 293 and the third end of the four-way valve 240. The low pressure sensor 296 is disposed in a link between the second needle valve 294 and the inlet of the compressor 250.
The present embodiment relates to the suction side device of the four-way valve 240.
When refrigerating: the compressor 250 sucks low-temperature low-pressure refrigerant vapor from the evaporator 110, and compresses the vapor into high-temperature high-pressure superheated vapor. Then, the high-temperature and high-pressure refrigerant vapor enters the condenser 220 through the four-way valve 240, exchanges heat with the forced convection outdoor air through the condenser 220, and condenses the high-temperature and high-pressure refrigerant vapor into a high-temperature and high-pressure liquid refrigerant. The high-temperature high-pressure liquid refrigerant is throttled and depressurized by the electronic expansion valve 210 to become a low-temperature low-pressure liquid refrigerant. The throttled and depressurized liquid refrigerant enters the evaporator 110 to exchange heat with indoor air, then turns into low-temperature low-pressure gaseous refrigerant, and enters the gas-liquid separator 293 to return to the compressor 250, thus being circulated reciprocally.
When heating, the method comprises the following steps: the four-way valve 240 is reversed, and the compressor 250 sucks in low-temperature low-pressure refrigerant vapor from the condenser 220, compresses the vapor into high-temperature high-pressure superheated vapor. Then, the high-temperature and high-pressure refrigerant vapor enters the evaporator 110 through the four-way valve 240 after reversing, and exchanges heat with the indoor air with lower temperature through the evaporator 11010, so that the high-temperature and high-pressure refrigerant vapor is condensed into a high-temperature and high-pressure liquid refrigerant. The high-temperature high-pressure liquid refrigerant first enters the liquid reservoir 280, and then is throttled and depressurized by the electronic expansion valve 210 to become low-temperature low-pressure liquid refrigerant. The liquid refrigerant after throttling and depressurization enters the condenser 220 to exchange heat with outdoor low-temperature air, then turns into low-temperature low-pressure gaseous refrigerant, and enters the gas-liquid separator 293 to return to the compressor 250, and the liquid refrigerant is circulated in a reciprocating manner.
A fifth temperature sensor 304 and a low pressure sensor 296 are installed on the outlet side of the evaporator 110 and the suction side of the compressor 250 to achieve actual suction superheat determination of the unit. The opening of the electronic expansion valve 210 is adjusted through the actual suction superheat degree and the target superheat degree, so that the electronic expansion valve is quickly adjusted to an optimal opening value, and the efficient and reliable operation of the unit is ensured.
As shown in fig. 1 to 4, in an embodiment of the present application, the outdoor unit 200 further includes a first temperature sensor 300, a second temperature sensor 301, a third temperature sensor 302, a fourth temperature sensor 303, and a fifth temperature sensor 304. The first temperature sensor 300, the second temperature sensor 301, the third temperature sensor 302, the fourth temperature sensor 303 and the fifth temperature sensor 304 are all externally connected with the circuit board 130. The first temperature sensor 300 is disposed in a link between the first distribution head 111a and the outlet of the first branch pipe network 111. The second temperature sensor 301 is disposed on a link between the first end of the first tee 113 and the first end of the electronic expansion valve 210. The third temperature sensor 302 is disposed in a link between the filter drier 270 and the outlet of the condenser 220. The fourth temperature sensor 303 is provided in a link between the first needle valve 291 and an outlet of the compressor 250. The fifth temperature sensor 304 is disposed in a link between the third needle valve 295 and a third end of the four-way valve 240.
The present embodiment relates to a sensor. The first temperature sensor 300 is an inner disk temperature, the second temperature sensor 301 is an inner disk outlet temperature, the third temperature sensor 302 is an outer disk temperature, the fourth temperature sensor 303 is an exhaust temperature sensor to provide an exhaust temperature signal and the fifth temperature sensor 304 is an intake temperature sensor to provide an intake temperature signal. The opening degree of the electronic expansion valve 210 is realized through the data of the actual suction superheat degree and the target superheat degree, so that the electronic expansion valve is quickly adjusted to an optimal opening degree value, and the efficient and reliable operation of the unit is ensured. In addition, when it is detected that the actual exhaust temperature is higher than the set upper limit of the exhaust temperature, the electronic expansion valve 210 controls the opening degree of the electronic expansion valve 210 by comparing the actual exhaust temperature with the set upper limit of the exhaust temperature, thereby achieving the purpose of controlling the exhaust temperature, preventing the exhaust temperature from being excessively high, and ensuring the normal operation of the compressor 250.
As shown in fig. 1 to 4, in an embodiment of the present application, the indoor unit 100 further includes a plurality of secondary evaporators 140 and a plurality of secondary fans 150. One of the secondary fans 150 is attached to one of the secondary evaporators 140. One of the secondary evaporators 140 includes a first joint 151 and a second joint 152. The first joint 151 is disposed in a link between the first end of the electronic expansion valve 210 and the inlet of the secondary evaporator 140. The second connector 152 is disposed on a link between the fourth end of the four-way valve 240 and the outlet of the secondary evaporator 140.
The present embodiment relates to an indoor unit 100. In practice, the whole fresh air direct expansion unit based on the electronic expansion valve 210 may be an indoor unit 100 formed by connecting a plurality of secondary evaporators 140 and a plurality of secondary fans 150 in parallel. It should be noted that, in this embodiment, the indoor unit 100 may be formed by a plurality of secondary fans 150 and a secondary evaporator 140, and a plurality of secondary evaporators 140 are connected in parallel. This is advantageous to improving the suitability of the all fresh air direct expansion unit based on the electronic expansion valve 210 to the indoor pattern of the user. This ensures a good fit of the multi-line evaporator 110 due to the high ability of the electronic expansion valve 210 to adjust the optimal opening value.
As shown in fig. 1 to 4, in an embodiment of the application, the fresh air direct expansion unit based on the electronic expansion valve 210 further includes a plurality of secondary outdoor units 310. Each of the secondary outdoor units 310 includes a third joint 311 and a fourth joint 312. The third joint 311 is provided in a link between the inlet of the evaporator 110 and the outlet of the secondary outdoor unit 310. The fourth joint 312 is provided in a link between the outlet of the evaporator 110 and the inlet of the secondary outdoor unit 310.
The present embodiment relates to an outdoor unit 200. In practice, the fresh air direct expansion unit based on the electronic expansion valve 210 may include a plurality of secondary outdoor units 310 composed of a plurality of compressors 250. This is advantageous to improving the suitability of the all fresh air direct expansion unit based on the electronic expansion valve 210 to the indoor pattern of the user. This ensures a good fit of the multi-line evaporator 110 due to the high ability of the electronic expansion valve 210 to adjust the optimal opening value.
The technical features of the above embodiments may be combined arbitrarily, and the steps of the method are not limited to the execution sequence, so that all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description of the present specification.
The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be assessed as that of the appended claims.
Claims (10)
1. All-new-wind direct expansion unit based on electronic expansion valve, which is characterized by comprising:
The indoor unit comprises an evaporator and a first motor, wherein the first motor is attached to the evaporator and is externally connected with a circuit board;
The outdoor unit comprises an electronic expansion valve, a condenser, a second motor, a four-way valve and a compressor, wherein the electronic expansion valve is externally connected with a circuit board, the electronic expansion valve comprises a first end and a second end, the first end of the electronic expansion valve is communicated with an inlet of the evaporator, the second end of the electronic expansion valve is communicated with an outlet of the condenser, the inlet of the condenser is communicated with the first end of the four-way valve, the second motor is attached to the condenser, the second motor is externally connected with the circuit board, the second end of the four-way valve is communicated with an outlet of the compressor, the third end of the four-way valve is communicated with the inlet of the compressor, and the fourth end of the four-way valve is communicated with the outlet of the evaporator.
2. The electronic expansion valve-based full-fresh air direct expansion unit according to claim 1, wherein the evaporator comprises a first branch pipe network, a second branch pipe network, a first three-way pipe and a second three-way pipe;
the first end of the second three-way pipe is communicated with the first end of the electronic expansion valve;
The second end of the second tee pipe is communicated with the inlet of the first branch pipe network;
the third end of the second three-way pipe is communicated with the inlet of the second branch pipe net;
the first end of the first three-way pipe is communicated with the fourth end of the four-way valve;
the second end of the first tee pipe is communicated with the outlet of the first branch pipe network;
And the third end of the first three-way pipe is communicated with the outlet of the second branch pipe network.
3. The electronic expansion valve-based full fresh air direct expansion unit of claim 2, wherein the first branch network comprises a first distribution head;
the first distribution head is arranged on a link between the second end of the second tee pipe and the inlet of the first branch pipe network;
The second branch pipe network comprises a second distribution head and an electromagnetic valve;
the second distribution head is arranged on a link between the third end of the second tee pipe and the inlet of the second branch pipe network;
the electromagnetic valve is arranged on a link between the second distribution head and the third end of the second three-way pipe.
4. The electronic expansion valve-based full fresh air direct expansion unit according to claim 3, wherein the outdoor unit further comprises a copper filter, a dry filter and a liquid reservoir;
the liquid storage device is arranged on a link between the first end of the electronic expansion valve and the first end of the second three-way pipe;
The copper filter is arranged on a link between the liquid reservoir and the first end of the electronic expansion valve;
The dry filter is disposed in a link between the second end of the electronic expansion valve and the condenser outlet.
5. The electronic expansion valve-based full fresh air direct expansion unit according to claim 4, wherein the outdoor unit further comprises a first needle valve, a fourth temperature sensor and a high-voltage switch;
the fourth temperature sensor is externally connected with a circuit board;
the first needle valve is arranged on a link between the second end of the four-way valve and the outlet of the compressor;
the high-voltage switch is externally connected with a circuit board;
The high pressure switch is disposed in a link between the first needle valve and an outlet of the compressor.
6. The electronic expansion valve-based full fresh air direct expansion unit according to claim 5, wherein the outdoor unit further comprises a gas-liquid separator, a second needle valve, a third needle valve, a low pressure sensor, a fifth temperature sensor and a low pressure switch;
The gas-liquid separator is arranged on a link between the third end of the four-way valve and the inlet of the compressor;
The second needle valve is arranged at the air outlet end of the air-liquid separator;
the third needle valve is arranged at the gas inlet end of the gas-liquid separator;
The low pressure sensor is externally connected with a circuit board;
the fifth temperature sensor is externally connected with a circuit board;
the low-voltage switch is externally connected with a circuit board.
7. The electronic expansion valve-based full fresh air direct expansion unit according to claim 6, wherein said second needle valve is disposed in a link between said gas-liquid separator and an inlet of said compressor;
The third needle valve is arranged on a link between the gas-liquid separator and the third end of the four-way valve;
the low pressure sensor is disposed in a link between the second needle valve and an inlet of the compressor.
8. The electronic expansion valve-based full fresh air direct expansion unit according to claim 7, wherein the outdoor unit further comprises a first temperature sensor, a second temperature sensor, a third temperature sensor, a fourth temperature sensor and a fifth temperature sensor;
the first temperature sensor, the second temperature sensor, the third temperature sensor, the fourth temperature sensor and the fifth temperature sensor are all externally connected with a circuit board;
The first temperature sensor is arranged on a link between the first distribution head and the outlet of the first branch pipe network;
The second temperature sensor is arranged on a link between the first end of the first three-way pipe and the first end of the electronic expansion valve;
The third temperature sensor is arranged on a link between the dry filter and the condenser outlet;
the fourth temperature sensor is arranged on a link between the first needle valve and an outlet of the compressor;
The fifth temperature sensor is arranged on a link between the third needle valve and the third end of the four-way valve.
9. The electronic expansion valve-based full fresh air direct expansion unit according to claim 1, wherein the indoor unit further comprises a plurality of secondary evaporators and a plurality of secondary fans;
one of the secondary fans is attached to one of the secondary evaporators;
one of the secondary evaporators includes a first junction and a second junction;
the first joint is arranged on a link between the first end of the electronic expansion valve and the inlet of the secondary evaporator;
The second joint is arranged on a link between the fourth end of the four-way valve and the outlet of the secondary evaporator.
10. The electronic expansion valve-based full fresh air direct expansion unit according to claim 1, further comprising a plurality of secondary outdoor units;
each secondary outdoor unit comprises a third joint and a fourth joint;
The third joint is arranged on a link between the inlet of the evaporator and the outlet of the secondary outdoor unit;
The fourth joint is disposed at a link between the outlet of the evaporator and the inlet of the secondary outdoor unit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322591884.XU CN220871008U (en) | 2023-09-22 | 2023-09-22 | Full-new wind direct expansion unit based on electronic expansion valve |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202322591884.XU CN220871008U (en) | 2023-09-22 | 2023-09-22 | Full-new wind direct expansion unit based on electronic expansion valve |
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| CN220871008U true CN220871008U (en) | 2024-04-30 |
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| CN202322591884.XU Active CN220871008U (en) | 2023-09-22 | 2023-09-22 | Full-new wind direct expansion unit based on electronic expansion valve |
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| CN (1) | CN220871008U (en) |
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