CN218442568U

CN218442568U - Multi-split central air conditioner control system

Info

Publication number: CN218442568U
Application number: CN202222001083.9U
Authority: CN
Inventors: 沈良洪; 耿倩芸; 李朝珍
Original assignee: Xinke Environmental Protection Technology Co ltd
Current assignee: Xinke Environmental Protection Technology Co ltd
Priority date: 2022-08-01
Filing date: 2022-08-01
Publication date: 2023-02-03
Anticipated expiration: 2032-08-01

Abstract

The utility model discloses a many online central air conditioning control system, which comprises a compressor, the oil separator, outdoor condenser, vapour and liquid separator and indoor set, the compressor is given vent to anger the end intercommunication and is had first copper pipe, be equipped with high pressure switch on the first copper pipe, one side and the oil separator inlet end of first copper pipe communicate, the oil separator is given vent to anger the end intercommunication and is had fifth copper pipe, one side of fifth copper pipe and outdoor condenser's refrigerant entrance point to the intercommunication, outdoor condenser's refrigerant exit end intercommunication has the fourth copper pipe, through an outdoor machine or many parallelly connected off-premises stations, connect many different types or the same type's indoor set, each indoor set can be according to operational environment temperature situation needs independent operation respectively, make this central air conditioning control system control logic more simple and convenient, overcome the not enough shortcoming of the many online central air conditioning refrigerating system refrigeration volumes of equal configuration, this control makes many online central air conditioning refrigerating system integral operation stable.

Description

Multi-split central air conditioner control system

Technical Field

The utility model relates to a central air conditioning technology field specifically is a many online central air conditioning control system.

Background

A central air conditioning system consists of one or more cold heat source systems and multiple air conditioning systems that are different from conventional refrigerant-based air conditioners that centrally treat air (e.g., a monomachine, VRV) to achieve comfort requirements. The principle of liquid gasification refrigeration is adopted to provide the required cold energy for the air conditioning system so as to offset the heat load of the indoor environment; the heating system provides heat required by the air conditioning system to offset the cooling and heating load of the indoor environment, when the existing central air conditioner is used for refrigerating, the refrigerating capacity of the indoor units is easy to be insufficient under the condition that part of the indoor units are in a multi-split state, and the central air conditioner is unstable in operation, so that the multi-split central air conditioner control system is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a many online central air conditioning control system to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a multi-split central air-conditioning control system comprises a compressor, an oil separator, an outdoor condenser, a gas-liquid separator and an indoor unit, wherein the air outlet end of the compressor is communicated with a first copper pipe, a high-pressure switch is arranged on the first copper pipe, one side of the first copper pipe is communicated with the air inlet end of the oil separator, the air outlet end of the oil separator is communicated with a fifth copper pipe, one side of the fifth copper pipe is communicated with the refrigerant inlet end of the outdoor condenser, the refrigerant outlet end of the outdoor condenser is communicated with a fourth copper pipe, the fourth copper pipe is respectively communicated with a check valve and a first electronic expansion valve, the check valve and the air outlet end of the first electronic expansion valve are communicated with a third copper pipe, the third copper pipe is provided with a plurality of second electronic expansion valves, the air outlet end of the second electronic expansion valves is communicated with the indoor unit, the air outlet end of the indoor unit is communicated with an eighth copper pipe, one side of the eighth copper pipe is communicated with the air inlet end of the gas-liquid separator, the air outlet end of the ninth copper pipe is communicated with a ninth copper pipe, a low-pressure switch is arranged on the ninth copper pipe, and one side of the ninth copper pipe is communicated with the air inlet end of the compressor.

As further preferable in the present technical solution: the oil outlet end of the oil separator is communicated with a second copper pipe, an oil return capillary tube is arranged on the second copper pipe, and one side of the oil return capillary tube is communicated with an eighth copper pipe.

As further preferable in the present technical solution: and a second electromagnetic valve is arranged on the fifth copper pipe, the air outlet end of the second electromagnetic valve is communicated with a seventh copper pipe, and one side of the seventh copper pipe is communicated with an eighth copper pipe.

As further preferable in the present technical solution: and a sixth copper pipe is communicated with the fourth copper pipe, a first electromagnetic valve is arranged on the sixth copper pipe, and one side of the first electromagnetic valve is communicated with an eighth copper pipe.

As further preferable in the present technical solution: the compressor outside has cup jointed the oil temperature heat band, compressor one side is equipped with the off-premises station control panel, off-premises station control panel output electric connection is in the input of compressor.

Compared with the prior art, the beneficial effects of the utility model are that: the central air-conditioning control system has the advantages that the indoor units of different types or the same type are connected through one outdoor unit or a plurality of outdoor units connected in parallel, and each indoor unit can be independently operated according to the temperature condition of the working environment, so that the control logic of the central air-conditioning control system is simpler and more convenient, the defect of insufficient refrigerating capacity of the existing multi-split air-conditioning system with the same configuration is overcome, and the control ensures that the multi-split central air-conditioning refrigerating system is stable in overall operation.

Drawings

Fig. 1 is a schematic diagram of the central air conditioner of the present invention.

In the figure: 1. a compressor; 2. an oil temperature heating zone; 3. an oil separator; 4. an outdoor condenser; 5. a one-way valve; 6. a first electronic expansion valve; 7. a second electronic expansion valve; 8. an oil return capillary tube; 9. a gas-liquid separator; 10. an outdoor unit control panel; 11. a high pressure switch; 12. a first copper tube; 13. a second copper tube; 14. a third copper tube; 15. a fourth copper pipe; 16. a fifth copper pipe; 17. a sixth copper pipe; 18. a first solenoid valve; 19. a second solenoid valve; 20. a seventh copper tube; 21. an eighth copper tube; 22. a low pressure switch; 24. an indoor unit; 25. and a ninth copper tube.

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.

Examples

Referring to fig. 1, the present invention provides a technical solution: a multi-connected central air-conditioning control system comprises a compressor 1, an oil separator 3, an outdoor condenser 4, a gas-liquid separator 9 and an indoor unit 24, wherein the air outlet end of the compressor 1 is communicated with a first copper pipe 12, a high-pressure switch 11 is arranged on the first copper pipe 12, one side of the first copper pipe 12 is communicated with the air inlet end of the oil separator 3, the oil outlet end of the oil separator 3 is communicated with a second copper pipe 13, an oil return capillary pipe 8 is arranged on the second copper pipe 13, one side of the oil return capillary pipe 8 is communicated with an eighth copper pipe 21, lubricating oil is returned to the compressor 1 by the oil return capillary pipe 8 at any moment to ensure the stable and reliable operation of the compressor 1, the air outlet end of the oil separator 3 is communicated with a fifth copper pipe 16, a second electromagnetic valve 19 is arranged on the fifth copper pipe 16, the air outlet end of the second electromagnetic valve 19 is communicated with a seventh copper pipe 20, one side of the seventh copper pipe 20 is communicated with the eighth copper pipe 21, the second electromagnetic valve 19 is an air electromagnetic valve, the second electromagnetic valve 19 is opened when the pressure of the multi-connected air conditioning system is overhigh, one side of a fifth copper pipe 16 is communicated with the refrigerant inlet end of the outdoor condenser 4, the refrigerant outlet end of the outdoor condenser 4 is communicated with a fourth copper pipe 15, the fourth copper pipe 15 is communicated with a sixth copper pipe 17, the sixth copper pipe 17 is provided with a first electromagnetic valve 18, one side of the first electromagnetic valve 18 is communicated with an eighth copper pipe 21, the first electromagnetic valve 18 is opened when the exhaust temperature of the multi-connected air conditioning system is overhigh to protect the stable and reliable operation of the refrigeration compressor 1, the fourth copper pipe 15 is respectively communicated with a check valve 5 and a first electronic expansion valve 6, the air outlet ends of the check valve 5 and the first electronic expansion valve 6 are communicated with a third copper pipe 14, the third copper pipe 14 is provided with a plurality of second electronic expansion valves 7, the air outlet end of the second electronic expansion valve 7 is communicated with an indoor unit 24, the air outlet end of the indoor unit 24 is communicated with the eighth copper pipe 21, one side of the eighth copper pipe 21 is communicated with the air inlet end of the gas-liquid separator 9, the air outlet end of the gas-liquid separator 9 is communicated with a ninth copper pipe 25, a low-pressure switch 22 is arranged on the ninth copper pipe 25, one side of the ninth copper pipe 25 is communicated with the air inlet end of the compressor 1, an oil temperature heating belt 2 is sleeved on the outer side of the compressor 1, an outdoor unit control board 10 is arranged on one side of the compressor 1, the output end of the outdoor unit control board 10 is electrically connected to the input end of the compressor 1, and the oil temperature heating belt 2 is used for heating internal lubricating oil, so that the lubricating oil is at a good working temperature.

The working principle is as follows: under the refrigeration cycle, the multi-connected central air conditioner discharges refrigerant gas from an air outlet of a variable frequency compressor 1 at the outdoor side refrigeration working environment temperature, the refrigerant gas is discharged into an oil separator 3 through a first copper pipe 12 and a high pressure switch 11, oil mist separation is carried out on the refrigerant gas in the oil separator 3, lubricating oil enters the bottom of the oil separator 3 along the inner wall surface of the oil separator 3, the refrigerant gas is arranged at the upper part of the oil separator 3, the refrigerant gas from the oil separator 3 enters a refrigerant air inlet end of an outdoor condenser 4 through a fifth copper pipe 16, heat is released and condensed on the refrigerant gas through the outdoor condenser 4, the condensed and heat-released liquid refrigerant simultaneously flows through a one-way valve 5 and a first electronic expansion valve 6, the condensed and heat-released liquid refrigerant enters a plurality of second electronic expansion valves 7 positioned in indoor units 24, the throttled refrigerant absorbs heat in a plurality of indoor units 24 evaporators to realize refrigeration of the plurality of indoor units 24, the refrigerant gas flowing out of the plurality of indoor units 24 is collected in an eighth copper pipe 21 and is communicated with the refrigerant gas-liquid separator 9 to be compressed and separated into a gas-liquid compressor 1, and then the gas-liquid compressor is compressed and separated,

the oil return capillary tube 8 is arranged on the second copper tube 13 communicated with the oil outlet end of the oil separator 3, lubricating oil is constantly returned to the compressor 1, stable and reliable operation of the compressor 1 is guaranteed, the first electromagnetic valve 18 is a liquid bypass electromagnetic valve, the second electromagnetic valve 19 is an air bypass electromagnetic valve, the second electromagnetic valve 19 is opened when the pressure of the multi-split air-conditioning system is too high, the first electromagnetic valve 18 is opened when the exhaust temperature of the multi-split air-conditioning system is too high, stable and reliable operation of the refrigeration compressor 1 is protected, according to the refrigeration principle and the refrigerant characteristic, the defect that the refrigerating capacity of the existing multi-split air-conditioning system with the same configuration is insufficient is overcome, and stable and reliable operation of the multi-split air-conditioning system is guaranteed.

When the multi-split central air conditioner needs to be used, firstly, an indoor unit remote controller is pressed, a starting instruction is sent to an indoor unit control panel, the indoor unit control panel sends an operation instruction, the instruction is sent to an outdoor unit control panel 10, and the outdoor unit control panel 10 respectively sends four groups of instructions:

1. according to feedback information of the multi-split running system, a fan gear of an outdoor condenser 4 is controlled, and a compressor 1 and an oil temperature heating belt 2 are controlled;

2. controlling the states of a second electromagnetic valve 19, a first electromagnetic valve 18, a high-pressure switch 11 and a low-pressure switch 22 of the outdoor unit according to the abnormal feedback information of the multi-split running system;

3. controlling the output capacity of the direct-current variable-frequency compressor 1 according to the total indoor unit 24 capacity value and the indoor unit 24 capacity requirement calculated by the multi-split operation system, and adjusting the operation rotating speed of the direct-current variable-frequency compressor 1, namely, increasing and decreasing the frequency;

4. controlling the opening degree of a first electronic expansion valve 6 of the outdoor condenser 4 according to the operation related information of the outdoor condenser 4 of the multi-connected machine during heating;

then, the information is fed back to the outdoor unit control panel 10, and two sets of information are sent to the indoor unit control panel: giving an initial opening degree to the second electronic expansion valve 7 of the indoor unit 24, and adjusting the opening degree of the second electronic expansion valve 7 of the indoor unit 24 according to relevant operation parameters; the address dial, the capacity dial and the operation mode of the multi-connected indoor unit 24 are identified, the indoor unit 24, the air release motor, the drainage pump and the electric heating operation mode are controlled according to the request signal instruction, and each electric control element of the indoor unit can also be controlled to work by using intelligent control modes such as micro-communication and the like.

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 many online central air conditioning control system, includes compressor (1), oil separator (3), outdoor condenser (4), vapour and liquid separator (9) and indoor set (24), its characterized in that: the air outlet end of the compressor (1) is communicated with a first copper pipe (12), a high-pressure switch (11) is arranged on the first copper pipe (12), one side of the first copper pipe (12) is communicated with the air inlet end of the oil separator (3), the air outlet end of the oil separator (3) is communicated with a fifth copper pipe (16), one side of the fifth copper pipe (16) is communicated with the refrigerant inlet end of the outdoor condenser (4), a refrigerant outlet end of the outdoor condenser (4) is communicated with a fourth copper pipe (15), the fourth copper pipe (15) is respectively communicated with a one-way valve (5) and a first electronic expansion valve (6), the air outlet ends of the one-way valve (5) and the first electronic expansion valve (6) are communicated with a third copper pipe (14), a plurality of second electronic expansion valves (7) are arranged on the third copper pipe (14), the air outlet end of the second electronic expansion valve (7) is communicated with an indoor unit (24), an air outlet end of the indoor unit (24) is communicated with an eighth copper pipe (21), one side of the eighth copper pipe (21) is communicated with the gas inlet end of the gas-liquid separator (9), the air outlet end of the gas-liquid separator (9) is communicated with a ninth copper pipe (25), a low-pressure switch (22) is arranged on the ninth copper pipe (25), one side of the ninth copper pipe (25) is communicated with the air inlet end of the compressor (1).

2. The multi-split central air-conditioning control system as claimed in claim 1, wherein: the oil outlet end of the oil separator (3) is communicated with a second copper pipe (13), an oil return capillary pipe (8) is arranged on the second copper pipe (13), and one side of the oil return capillary pipe (8) is communicated with an eighth copper pipe (21).

3. A multi-split central air-conditioning control system as claimed in claim 1, wherein: a second electromagnetic valve (19) is arranged on the fifth copper pipe (16), an air outlet end of the second electromagnetic valve (19) is communicated with a seventh copper pipe (20), and one side of the seventh copper pipe (20) is communicated with an eighth copper pipe (21).

4. A multi-split central air-conditioning control system as claimed in claim 1, wherein: the fourth copper pipe (15) is communicated with a sixth copper pipe (17), a first electromagnetic valve (18) is arranged on the sixth copper pipe (17), and one side of the first electromagnetic valve (18) is communicated with an eighth copper pipe (21).

5. The multi-split central air-conditioning control system as claimed in claim 1, wherein: the outdoor unit is characterized in that an oil temperature heating belt (2) is sleeved on the outer side of the compressor (1), an outdoor unit control panel (10) is arranged on one side of the compressor (1), and the output end of the outdoor unit control panel (10) is electrically connected to the input end of the compressor (1).