CN210951949U

CN210951949U - Double-frequency-conversion multi-connected air conditioning unit

Info

Publication number: CN210951949U
Application number: CN201922112764.0U
Authority: CN
Inventors: 黄开明; 莫理光
Original assignee: Shenzhen Kanon Air Conditioning System Co ltd
Current assignee: Shenzhen Kanon Air Conditioning System Co ltd
Priority date: 2019-12-01
Filing date: 2019-12-01
Publication date: 2020-07-07
Anticipated expiration: 2029-12-01

Abstract

The utility model discloses a two frequency conversion multiple air conditioning unit, including inverter compressor, the vapour and liquid separator and the cross valve switch-on of inverter compressor one end switch-on, inverter compressor and third electronic expansion valve switch-on, the oil separator and the cross valve switch-on of inverter compressor one end switch-on, the output switch-on of cross valve and outdoor heat exchanger, the first electronic expansion valve and the equal switch-on economic ware of second electronic expansion valve that outdoor heat exchanger one end was put through respectively, the third electronic expansion valve and the cross valve switch-on of economic ware switch-on, economic ware one end and first stop valve switch-on, second stop valve one end and cross valve switch-on. The utility model discloses a first electronic expansion valve and second electronic expansion valve independent control have improved air conditioning unit's energy efficiency ratio, and two sets of independent work's inverter compressor still can work when can making one of them trouble, has improved air conditioning unit's practicality.

Description

Double-frequency-conversion multi-connected air conditioning unit

Technical Field

The utility model relates to an air conditioning unit technical field specifically is a two frequency conversion multiple air conditioning unit.

Background

After the technologies of variable-frequency speed regulation and electronic expansion valves are gradually mature, variable-frequency multi-split air conditioning systems generally adopt variable-frequency compressors and electronic expansion valves. The air conditioning system works under the condition that the environmental temperature and the indoor load are constantly changed, and the system environment and the environment are mutually changed, so that the state of the multi-split air conditioning system is constantly changed, the capacity of the air conditioning system needs to be timely adjusted through the control system, and the influence is eliminated. The control system collects indoor comfort parameters, outdoor environment parameters and state parameters representing the running condition of the refrigerating system, adjusts the air delivery quantity of the compressor by means of frequency conversion and the like according to the system running optimization criterion and the human body comfort criterion, controls all controllable components such as a fan, an expansion valve and the like of the air conditioning system, ensures the comfort of the indoor environment and enables the air conditioning system to stably work in the optimal working state.

However, most of the existing variable-frequency multi-connected air conditioning units are highly integrated, the whole air conditioning unit cannot normally operate and cannot work in a refrigerating or heating mode when the key position is damaged, and inconvenience is brought to a user under the condition of hot or cold weather. Therefore, it is desirable to provide a dual inverter multi-connected air conditioning unit.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a two frequency conversion multiple air conditioning unit, through first electronic expansion valve and second electronic expansion valve independent control, can make the heat exchange efficiency of outdoor heat exchanger be in the optimal state, and then improve air conditioning unit's energy efficiency ratio, the variable frequency compressor of two sets of independent work still can work when can making one of them trouble moreover, has improved air conditioning unit's practicality to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a double-frequency-conversion multi-connected air conditioning unit comprises a frequency conversion compressor, a first stop valve, a second stop valve and an outdoor heat exchanger, wherein one end of the frequency conversion compressor is communicated with a gas-liquid separator through a copper pipe, the frequency conversion compressor is communicated with a third electronic expansion valve through a first electromagnetic valve and a second one-way valve, the gas-liquid separator is communicated with an S end of a four-way valve through a filter, one end of the frequency conversion compressor is communicated with an oil separator, the oil separator is communicated with a D end of the four-way valve through a first one-way valve, an output end of the outdoor heat exchanger is communicated with a C end of the four-way valve, an input end of the outdoor heat exchanger is communicated with a first electronic expansion valve through the filter, an input end of the outdoor heat exchanger is communicated with a second electronic expansion valve through the filter, and one ends of the first electronic expansion valve and the, one end of the economizer is communicated with a third electronic expansion valve through a filter, one end of the third electronic expansion valve is communicated with the S end of the four-way valve through a second electromagnetic valve, one end of the economizer is communicated with a first stop valve through the filter, one end of the first stop valve is communicated with the indoor unit, one end of a second stop valve is communicated with the indoor unit, and one end of the second stop valve is communicated with the E end of the four-way valve through the filter.

Preferably, two groups of heat exchangers are arranged inside the outdoor heat exchanger, and a cooling fan is arranged outside the outdoor heat exchanger.

Preferably, a rectangular heat dissipation frame is arranged outside the heat dissipation fan, and a sound-proof cover is fixedly connected to the inner wall of the heat dissipation frame.

Preferably, the variable frequency compressors are symmetrically provided with two groups, and the two groups of variable frequency compressors work independently.

Preferably, the filters are arranged in eight groups, and the filters are arranged in a two-inch copper DN50 thickening.

Preferably, the economizer is set as a profit economizer E EU12FA003 model.

Compared with the prior art, the beneficial effects of the utility model are that: through the independent control of the first electronic expansion valve and the second electronic expansion valve, the heat exchange efficiency of the outdoor heat exchanger can be in the optimal state, the energy efficiency ratio of the air conditioning unit is further improved, the two sets of frequency conversion compressors which work independently can still work when one of the frequency conversion compressors fails, and the practicability of the air conditioning unit is improved.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged schematic view of the area A of FIG. 1 according to the present invention;

fig. 3 is a schematic view of the internal structure of the heat dissipation fan of the present invention.

In the figure: 1. a variable frequency compressor; 2. an oil separator; 3. a first check valve; 301. a second one-way valve; 4. a four-way valve; 5. an outdoor heat exchanger; 6. a heat radiation fan; 601. a heat dissipation frame; 602. a sound-proof housing; 7. a first electronic expansion valve; 8. a second electronic expansion valve; 9. a filter; 10. a gas-liquid separator; 11. a first solenoid valve; 12. a third electronic expansion valve; 13. a second solenoid valve; 14. an economizer; 15. a first shut-off valve; 16. a second shut-off valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a double-frequency conversion multi-connected air conditioning unit comprises a frequency conversion compressor 1, a first stop valve 15, a second stop valve 16 and an outdoor heat exchanger 5, wherein one end of the frequency conversion compressor 1 is communicated with a gas-liquid separator 10 through a copper pipe, the frequency conversion compressor 1 is communicated with a third electronic expansion valve 12 through a first electromagnetic valve 11 and a second one-way valve 301, the gas-liquid separator 10 is communicated with the S end of a four-way valve 4 through a filter 9, one end of the frequency conversion compressor 1 is communicated with an oil separator 2, the oil separator 2 is communicated with the D end of the four-way valve 4 through a first one-way valve 3, the output end of the outdoor heat exchanger 5 is communicated with the C end of the four-way valve 4, the input end of the outdoor heat exchanger 5 is communicated with a first electronic expansion valve 7 through the filter 9, the input end of the outdoor heat exchanger 5 is communicated with a second electronic expansion valve 8 through the filter 9, and one ends of, one end of the economizer 14 is connected to the third electronic expansion valve 12 through the filter 9, one end of the third electronic expansion valve 12 is connected to the S-side of the four-way valve 4 through the second solenoid valve 13, one end of the economizer 14 is connected to the first cut-off valve 15 through the filter 9, one end of the first cut-off valve 15 is connected to the indoor unit, one end of the second cut-off valve 16 is connected to the indoor unit, and one end of the second cut-off valve 16 is connected to the E-side of the four-way valve 4 through the filter 9.

In actual implementation: the inside of outdoor heat exchanger 5 is provided with two sets of heat exchangers, and the outside of outdoor heat exchanger 5 is provided with radiator fan 6, radiator fan 6's outside is provided with the heat dissipation frame 601 of rectangle, fixedly connected with sound-proof housing 602 on heat dissipation frame 601's the inner wall, noise abatement when improving the radiating effect, inverter compressor 1 symmetry is provided with two sets ofly, and independent work between two sets of inverter compressor 1 that set up, avoid one of them to damage unable work, filter 9 sets up to eight groups, and filter 9 sets up to the DN50 thickening type of two inches of copper length, economizer 14 sets up to the profit economizer E EU12FA003 model, improve the heat transfer effect of during operation.

The specific use description is as follows: in actual work, the power supply is switched on, the equipment is started to work, the heat exchange efficiency of the outdoor heat exchanger 5 can be in the optimal state through the cooperation of the first electronic expansion valve 7 and the second electronic expansion valve 8 which are switched on by the outdoor heat exchanger 5 in an independent control mode, the energy efficiency ratio of the air conditioning unit is further improved, the two sets of frequency conversion compressors 1 which work independently can still work when one of the two sets of frequency conversion compressors fails, and the practicability of the air conditioning unit is improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a two frequency conversion multiple air conditioning unit, includes inverter compressor (1), first stop valve (15) second stop valve (16) and outdoor heat exchanger (5), its characterized in that: one end of the variable frequency compressor (1) is communicated with a gas-liquid separator (10) through a copper pipe, the variable frequency compressor (1) is communicated with a third electronic expansion valve (12) through a first electromagnetic valve (11) and a second one-way valve (301), the gas-liquid separator (10) is communicated with the S end of a four-way valve (4) through a filter (9), one end of the variable frequency compressor (1) is communicated with an oil separator (2), the oil separator (2) is communicated with the D end of the four-way valve (4) through a first one-way valve (3), the output end of the outdoor heat exchanger (5) is communicated with the C end of the four-way valve (4), the input end of the outdoor heat exchanger (5) is communicated with a first electronic expansion valve (7) through the filter (9), and the input end of the outdoor heat exchanger (5) is communicated with a second electronic expansion valve (8) through the filter (9), one end of each of the first electronic expansion valve (7) and the second electronic expansion valve (8) is communicated with an economizer (14), one end of each economizer (14) is communicated with a third electronic expansion valve (12) through a filter (9), one end of each third electronic expansion valve (12) is communicated with the S end of the four-way valve (4) through a second electromagnetic valve (13), one end of each economizer (14) is communicated with a first stop valve (15) through the filter (9), one end of each first stop valve (15) is communicated with the indoor unit, one end of each second stop valve (16) is communicated with the indoor unit, and one end of each second stop valve (16) is communicated with the E end of the four-way valve (4) through the filter (9).

2. The double-frequency-conversion multi-connected air conditioning unit as claimed in claim 1, wherein: the indoor heat exchanger is characterized in that two groups of heat exchangers are arranged inside the outdoor heat exchanger (5), and a cooling fan (6) is arranged outside the outdoor heat exchanger (5).

3. The double-frequency-conversion multi-connected air conditioning unit as claimed in claim 2, wherein: the heat dissipation fan is characterized in that a rectangular heat dissipation frame (601) is arranged outside the heat dissipation fan (6), and a sound insulation cover (602) is fixedly connected to the inner wall of the heat dissipation frame (601).

4. The double-frequency-conversion multi-connected air conditioning unit as claimed in claim 1, wherein: the variable frequency compressors (1) are symmetrically provided with two groups, and the two groups of variable frequency compressors (1) work independently.

5. The double-frequency-conversion multi-connected air conditioning unit as claimed in claim 1, wherein: the filters (9) are arranged into eight groups, and the filters (9) are arranged into a DN50 thickened type with the length of two inches made of copper.

6. The double-frequency-conversion multi-connected air conditioning unit as claimed in claim 1, wherein: the economizer (14) is set to be a profit-making economizer E EU12FA003 model.