A variable flow air conditioning system
By designing a variable flow air conditioning system in the air conditioning system, using components such as compressors, gas-liquid separators and heat exchangers, combined with intelligent control systems, the problem of high energy consumption in traditional air conditioning systems is solved, and rapid cooling and heating are achieved and high efficiency is achieved Energy-saving operation.
Patent Information
- Application Number
- CN201711384618.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2017-12-20
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2037-12-20
AI Technical Summary
Traditional central air conditioning systems consume a lot of losses during energy transfer, making them difficult to effectively adjust their capabilities automatically, resulting in high energy consumption.
Design a variable flow air conditioning system, including outdoor unit and indoor unit, through compressor, gas-liquid separator, four-way valve, outdoor heat exchanger and indoor heat exchanger, use a one-way valve and electronic expansion valve to achieve refrigerant flow Automatic adjustment, combined with intelligent control system, realizes rapid conversion of cooling and heating.
It achieves maximum energy-saving operation of the air conditioning system, reduces energy consumption, improves the cooling and heating effect and intelligent control, and saves costs.
Smart Images
Figure CN107842962B_ABST
Abstract
Description
Technical field:
[0001] The invention relates to a variable flow air conditioning system and relates to the technical field of air conditioning and refrigeration. Background technology:
[0002] With the advancement of science and technology, people's quality of life is getting higher and higher, they know more and more how to enjoy life, and their requirements for a comfortable environment are getting higher and higher. Air conditioning has gradually become a necessity of life. The energy consumption of the air conditioning system in modern buildings accounts for a large proportion of the entire building, while the traditional central air conditioning system has two heat exchanges, and the loss in the energy transfer process is relatively large. Summary of the invention:
[0003] The technical problem to be solved by the present invention is to provide a variable flow air conditioning system which can effectively and automatically adjust the capacity output, reduce energy consumption and realize energy saving effect to the maximum extent.
[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:
[0005] A variable flow air conditioning system comprises an outdoor unit and an indoor unit, wherein the outdoor unit is connected to the indoor unit through a pipeline, the outdoor unit comprises a compressor, a gas-liquid separator, a four-way valve, and an outdoor heat exchanger assembly, the outdoor heat exchanger assembly comprises an outdoor heat exchanger and a one-way valve, the indoor unit comprises an indoor heat exchanger and a first electronic expansion valve, the liquid outlet of the compressor is connected to the four-way valve, the four-way valve is respectively connected to one end of the outdoor heat exchanger, one end of the indoor heat exchanger and one end of the gas-liquid separator, the other end of the gas-liquid separator is connected to the liquid inlet of the compressor, the other end of the indoor heat exchanger is connected to the other end of the outdoor heat exchanger through a pipeline, a one-way valve and a first electronic expansion valve are connected in series on the connecting pipeline between the indoor heat exchanger and the outdoor heat exchanger, the one-way valve is arranged close to the outdoor heat exchanger, and the first electronic expansion valve is arranged close to the indoor heat exchanger.
[0006] Preferably, the compressors are arranged in two groups and both are connected to the four-way valve and the gas-liquid separator.
[0007] Preferably, a second electronic expansion valve connected in parallel with the one-way valve is provided on the pipeline between the outdoor heat exchanger and the indoor heat exchanger.
[0008] Preferably, the outdoor heat exchanger components are arranged in multiple groups and are connected in parallel between the four-way valve and the indoor heat exchanger.
[0009] Preferably, the indoor units are arranged in multiple groups and are connected in parallel between the outdoor heat exchanger assembly and the four-way valve.
[0010] Preferably, the variable flow air conditioning system also includes a control system, which includes a controller control unit, an indoor unit control unit, and an outdoor unit control unit. The controller control unit is used to transmit information required by the user to the indoor unit control unit. The indoor unit control unit is provided with a signal receiver and receives the signal sent by the controller control unit. The indoor unit control unit sends control instructions to the outdoor unit control unit to control the operation of the outdoor unit.
[0011] Compared with the prior art, the advantages of the present invention are: the variable flow air-conditioning system has a simple overall structure and is easy to operate and control. Refrigeration or heating is achieved by controlling the flow rate of the refrigerant and by direct evaporation or direct condensation of the refrigerant. The heating and cooling conversion speeds are fast and do not interfere with each other. The cooling and heating effects are good, and the control process is convenient, fast and highly intelligent, thereby achieving maximum energy-saving operation of the air-conditioning system, thereby saving costs, having high practicality and economic benefits, and being suitable for promotion and application. Description of the drawings:
[0012] The present invention is further described below in conjunction with the accompanying drawings:
[0013] Figure 1 It is a schematic diagram of the process of the present invention. Specific implementation method:
[0014] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention:
[0015] like Figure 1A variable flow air conditioning system shown in the figure includes an outdoor unit and an indoor unit, the outdoor unit and the indoor unit are connected through a pipeline 1, the outdoor unit includes a compressor 2, a gas-liquid separator 3, a four-way valve 4, and an outdoor heat exchanger assembly, the outdoor heat exchanger assembly includes an outdoor heat exchanger 5 and a one-way valve 6, the indoor unit includes an indoor heat exchanger 7 and a first electronic expansion valve 8, the liquid outlet of the compressor is connected to the four-way valve, and the four-way valve is respectively connected to the outdoor heat exchanger, the indoor heat exchanger and the gas-liquid separator, the other end of the gas-liquid separator is connected to the liquid inlet of the compressor, the other end of the indoor heat exchanger is connected to the other end of the outdoor heat exchanger through a pipeline, a one-way valve and a first electronic expansion valve are connected in series on the connecting pipeline between the indoor heat exchanger and the outdoor heat exchanger, as a preferred embodiment, a second electronic expansion valve 9 connected in parallel with the one-way valve is provided on the pipeline between the outdoor heat exchanger and the indoor heat exchanger, the one-way valve is arranged close to the outdoor heat exchanger, and the first electronic expansion valve is arranged close to the indoor heat exchanger.
[0016] In this embodiment, in order to further improve the cooling and heating effects, the compressors are provided in two groups and both are connected to the four-way valve and the gas-liquid separator.
[0017] In order to facilitate control and improve the air conditioning operation effect, the outdoor heat exchanger assembly is set to multiple groups and connected in parallel between the four-way valve and the indoor heat exchanger, and the indoor unit is set to multiple groups and connected in parallel between the outdoor heat exchanger assembly and the four-way valve.
[0018] Therefore, in actual applications, in the air conditioning refrigeration cycle, the outdoor heat exchanger is the condenser and the indoor heat exchanger is the evaporator. When the current in the four-way valve coil is cut off, the valve core falls due to gravity, so that the compressor outlet is connected to the outdoor heat exchanger, and the liquid inlet is connected to the indoor heat exchanger. In the air conditioning heating cycle, the four-way valve is switched, the coil is energized to generate a magnetic field, the valve core is sucked to the upper position, the compressor outlet is connected to the indoor heat exchanger, and the liquid inlet is connected to the outdoor heat exchanger. At this time, the flow direction of the refrigerant vapor changes, the indoor heat exchanger dissipates heat to the indoor room and becomes a condenser, and the outdoor heat exchanger becomes an evaporator. The refrigerant evaporates and absorbs outdoor heat, thereby realizing the heating process.
[0019] In this embodiment, the variable flow air conditioning system also includes a control system, which includes a controller control unit, an indoor unit control unit, and an outdoor unit control unit. The controller control unit is used to encode the information required by the user, such as operation mode, wind speed, set temperature, timer setting information, air guide plate angle setting and other signals, and then transmits them to the indoor unit control unit using an infrared signal modulated by a certain frequency. The indoor unit control unit is provided with a signal receiver, and receives the signal sent by the controller control unit. At the same time, it controls the wind speed of the indoor unit according to the detected indoor ambient temperature, evaporator temperature, evaporator outlet temperature signal, and the return oil and other instructions received from the outside, and sends control instructions to the outdoor unit control unit to provide sufficient control information for the outdoor unit. At the same time, it controls the opening and closing of the outdoor power supply, thereby controlling the operation of the outdoor unit.
[0020] In the actual installation process, in order to further improve the energy-saving effect of the system, the vacuum degree of the pipeline connecting the indoor unit and the outdoor unit can be adjusted by vacuuming. By maintaining a high vacuum degree in the pipeline, the indoor cooling and heating load requirements can be met in a timely manner to achieve maximum energy-saving operation. The specific vacuuming steps are as follows: 1. Tighten the nuts of the bell mouths of the indoor unit and the outdoor unit by hand first, and then tighten them with a wrench; 2. Unscrew the small cap of the thimble valve on the three-way stop valve of the outdoor unit to expose the male head of the thimble body, and screw on the female joint of the fluorine-filling pipe; connect the other end of the fluorine-filling pipe to the controllable male head of the low-pressure gauge valve of R410A, connect one end of another fluorine-filling pipe to the non-controllable male head of the low-pressure gauge valve, and connect the other end to the suction port of the vacuum pump; 3. Tighten all the joints and start the vacuum pump; 4. Slowly unscrew the knob of the low-pressure gauge valve. Note that the knob of the low-pressure gauge valve should not be unscrewed all at once, and the unscrewing process should be done in time. The time is controlled within 1-3 minutes; 5. When the low pressure gauge valve pointer reaches -755mmHg / Hg, tighten the low pressure gauge valve knob and turn off the vacuum pump; 6. Record the value of the low pressure gauge valve pointer, let it stand for 10 minutes, and see if the gauge pointer moves back to 0; 7. If there is a large drop, there may be leaks in the system, fluorine pipe head, pressure gauge valve, etc. You can unscrew the fluorine pipe on the vacuum pump and connect it to the new R410A refrigerant tank or Nitrogen, pressurized inspection, after the inspection, the pressurized R410A new refrigerant tank or nitrogen is evacuated to -755mmHg / Hg with a vacuum pump; 8. Disconnect the vacuum pump from the low-pressure gauge valve, unscrew the low-pressure gauge valve, and after the fluorine in this part is vented, remove the low-pressure gauge valve fluorine pipe and its components from the machine; 9. Use an inner hexagonal wrench to open the two-way valve core and the three-way valve core, tighten the three sealing caps, and check the leak point. If there is no leak point problem, the vacuuming process is completed. Through the above vacuuming process, the air and water vapor in the system pipeline can be pumped out of the system, which not only effectively prevents the air and water vapor from affecting the normal operation of the system, but also prevents the chemical changes between the air and water vapor and the refrigeration oil of the compressor, reduces the generation of dirty pipe blockage, and improves the operating efficiency of the air conditioning system.
[0021] The above-mentioned variable flow air-conditioning system has a simple overall structure and is easy to operate and control. It realizes cooling or heating by controlling the flow rate of refrigerant and through direct evaporation or direct condensation of the refrigerant. The conversion speed between heating and cooling is fast and does not interfere with each other. The cooling and heating effects are good, and the control process is convenient, fast and highly intelligent, thereby realizing the maximum energy-saving operation of the air-conditioning system, thereby saving costs and being highly practical.
[0022] It should be emphasized that the above are only preferred embodiments of the present invention and do not limit the present invention in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.
Claims
1. A variable flow air conditioning system, characterized in that: It includes an outdoor unit and an indoor unit, the outdoor unit and the indoor unit are connected through a pipeline, the outdoor unit includes a compressor, a gas-liquid separator, a four-way valve, and an outdoor heat exchanger assembly, the outdoor heat exchanger assembly includes an outdoor heat exchanger and a one-way valve, the indoor unit includes an indoor heat exchanger and a first electronic expansion valve, the liquid outlet of the compressor is connected to the four-way valve, the four-way valve is respectively connected to one end of the outdoor heat exchanger, one end of the indoor heat exchanger and one end of the gas-liquid separator, the other end of the gas-liquid separator is connected to the liquid inlet of the compressor, the other end of the indoor heat exchanger is connected to the other end of the outdoor heat exchanger through a pipeline, a one-way valve and a first electronic expansion valve are connected in series on the connecting pipeline between the indoor heat exchanger and the outdoor heat exchanger, the one-way valve is arranged close to the outdoor heat exchanger, and the first electronic expansion valve is arranged close to the indoor heat exchanger; The compressors are arranged in two groups and both are connected to the four-way valve and the gas-liquid separator; The outdoor heat exchanger components are arranged in multiple groups and connected in parallel between the four-way valve and the indoor heat exchanger; The indoor units are arranged in multiple groups and connected in parallel between the outdoor heat exchanger assembly and the four-way valve; After the multiple groups of indoor units are connected in parallel, there are only two ends, one end is connected to the outdoor heat exchanger assembly, and the other end is connected to the four-way valve; A second electronic expansion valve connected in parallel with the one-way valve is provided on the pipeline between the outdoor heat exchanger and the indoor heat exchanger; The variable flow air conditioning system also includes a control system, which includes a controller control unit, an indoor unit control unit, and an outdoor unit control unit. The controller control unit is used to transmit information required by the user to the indoor unit control unit. The indoor unit control unit is provided with a signal receiver, and receives the signal sent by the controller control unit. At the same time, the wind speed of the indoor unit is controlled according to the detected indoor ambient temperature, evaporator temperature, evaporator outlet temperature signal, and the oil return command received from the outdoor. The indoor unit control unit sends a control command to the outdoor unit control unit, and then controls the operation of the outdoor unit. In the air conditioning refrigeration cycle, the outdoor heat exchanger is the condenser, and the indoor heat exchanger is the evaporator. When the current in the four-way valve coil is cut off, the valve core falls due to gravity, so that the compressor outlet is connected to the outdoor heat exchanger, and the liquid inlet is connected to the indoor heat exchanger; in the air conditioning heating cycle, the four-way valve is switched, the coil is energized to generate a magnetic field, the valve core is sucked to the upper position, the compressor outlet is connected to the indoor heat exchanger, and the liquid inlet is connected to the outdoor heat exchanger. At this time, the flow direction of the refrigerant vapor changes, the indoor heat exchanger dissipates heat to the indoor room and becomes a condenser, and the outdoor heat exchanger becomes an evaporator. The refrigerant evaporates and absorbs outdoor heat, thereby realizing the heating process; On the connecting pipe between the indoor unit and the outdoor unit, a vacuum method is used to adjust the vacuum degree of the pipe; the air and water vapor in the system pipeline are pumped out of the system by vacuuming, thereby preventing chemical changes between the air, water vapor and the refrigeration oil of the compressor, reducing the occurrence of dirty pipe blockage, and improving the operating efficiency of the air-conditioning system.
Citation Information
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