Refrigeration Cycle Equipment

JP7610145B2Active Publication Date: 2025-01-08DAIKIN INDUSTRIES LTD
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Patent Information

Application Number
JP2023116597
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2019-07-08
Filing Date
2023-07-18
Publication Date
2025-01-08
Estimated Expiration
2039-07-16

AI Technical Summary

Benefits of technology

圧力差も最小限になるということである。このように対向流型の熱交換器を有する冷凍サイクル装置では、従来システムに比べエネルギー効率や能力の改善をもたらすことができる。

✦ Generated by Eureka AI based on patent content.

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Abstract

To provide a refrigeration cycle apparatus capable of improving the lubricity in the refrigeration cycle apparatus in performing a refrigeration cycle using a refrigerant having a sufficiently small GWP.SOLUTION: A refrigeration cycle apparatus (1) includes a refrigerant circuit (10) and a prescribed small-GWP refrigerant enclosed in the refrigerant circuit (10). The refrigerant circuit includes a compressor (21), a condenser (23), a decompressing unit (24), and an evaporator (31).SELECTED DRAWING: Figure 3A
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Claims

1. A compressor (100) for compressing a refrigerant; A motor (70) for driving the compressor (100); a power conversion device (30, 130, 30B, 130B, 30C, 130C) connected between an AC power source and the motor (70), having a switching element, and controlling the switching element so that the output of the motor (70) becomes a target value; Equipped with The refrigerants include HFO-1132(E) and HFO-1234yf, The refrigerant contains HFO-1132(E) and HFO-1234yf in a total concentration of 99.7% by mass or more, and based on the total mass of HFO-1132(E) and HFO-1234yf, The content of HFO-1132(E) is 35.0 to 65.0 mass%; The content of HFO-1234yf is 65.0 to 35.0 mass%. Refrigeration cycle equipment.

2. A compressor (100) for compressing a refrigerant; A motor (70) for driving the compressor (100); a power conversion device (30, 130, 30B, 130B, 30C, 130C) connected between an AC power source and the motor (70), having a switching element, and controlling the switching element so that the output of the motor (70) becomes a target value; Equipped with The refrigerants include HFO-1132(E) and HFO-1234yf, The refrigerant contains HFO-1132(E) and HFO-1234yf in a total concentration of 99.7% by mass or more, and based on the total mass of HFO-1132(E) and HFO-1234yf, The content of HFO-1132(E) is 12.1 to 72.0 mass%; The content of HFO-1234yf is 87.9 to 28.0 mass%. Refrigeration cycle equipment.

3. A compressor (100) for compressing a refrigerant; A motor (70) for driving the compressor (100); a power conversion device (30, 130, 30B, 130B, 30C, 130C) connected between an AC power source and the motor (70), having a switching element, and controlling the switching element so that the output of the motor (70) becomes a target value; Equipped with The refrigerants include HFO-1132(E) and HFO-1234yf, The refrigerant contains HFO-1132(E) and HFO-1234yf in a total concentration of 99.5% by mass or more, and based on the total mass of HFO-1132(E) and HFO-1234yf, The content of HFO-1132(E) is 40.5 to 49.2 mass%; The content of HFO-1234yf is 59.5 to 50.8 mass%. Refrigeration cycle equipment.

4. A compressor (100) for compressing a refrigerant; A motor (70) for driving the compressor (100); a power conversion device (30, 130, 30B, 130B, 30C, 130C) connected between an AC power source and the motor (70), having a switching element, and controlling the switching element so that the output of the motor (70) becomes a target value; Equipped with The refrigerants include HFO-1132(E) and HFO-1234yf, The refrigerant contains HFO-1132(E) and HFO-1234yf in a total concentration of 99.5% by mass or more, and based on the total mass of HFO-1132(E) and HFO-1234yf, The content of HFO-1132(E) is 31.1 to 39.8% by mass, The content of HFO-1234yf is 68.9 to 60.2 mass%. Refrigeration cycle equipment.

5. A compressor (100) for compressing a refrigerant; A motor (70) for driving the compressor (100); a power conversion device (30, 130, 30B, 130B, 30C, 130C) connected between an AC power source and the motor (70), having a switching element, and controlling the switching element so that the output of the motor (70) becomes a target value; Equipped with The refrigerants include HFO-1132(E) and HFO-1234yf, The refrigerant contains HFO-1132(E) and HFO-1234yf in a total concentration of 99.5% by mass or more, and based on the total mass of HFO-1132(E) and HFO-1234yf, The content of HFO-1132(E) is 21.0 to 28.4 mass%; The content of HFO-1234yf is 79.0 to 71.6 mass%. Refrigeration cycle equipment.

6. The refrigerant is, based on the total mass of HFO-1132(E) and HFO-1234yf, The content of HFO-1132(E) is 41.3 to 53.5 mass%; The content of HFO-1234yf is 58.7 to 46.5 mass%. The refrigeration cycle device according to claim 1.

7. The refrigerant consists of only HFO-1132(E) and HFO-1234yf, The refrigeration cycle apparatus according to claim 1 or 6.

8. The refrigerant consists of only HFO-1132(E) and HFO-1234yf, The refrigeration cycle device according to claim 3.

9. The evaporation temperature is -75 to -5°C. The refrigeration cycle apparatus according to claim 3 or 8.

10. The refrigerant is, based on the total mass of HFO-1132(E) and HFO-1234yf, The content of HFO-1132(E) is 31.1 to 37.9% by mass, The content of HFO-1234yf is 68.9 to 62.1 mass%. The refrigeration cycle device according to claim 4.

11. The refrigerant consists of only HFO-1132(E) and HFO-1234yf, The refrigeration cycle apparatus according to claim 4 or 10.

12. The evaporation temperature is -75 to -5°C.

12. A refrigeration cycle apparatus according to claim 4, 10 or 11.

13. The refrigerant consists of only HFO-1132(E) and HFO-1234yf, The refrigeration cycle device according to claim 5.

14. The power conversion device (30, 130) a rectifier circuit (21) that rectifies the AC voltage of the AC power supply; a capacitor (22) connected in parallel to the output side of the rectifier circuit (21) for smoothing voltage fluctuations caused by switching of the power conversion device (30); Including, The refrigeration cycle apparatus according to any one of claims 1 to 13.

15. The AC power source is a single-phase power source. The refrigeration cycle apparatus according to any one of claims 1 to 14.

16. The AC power source is a three-phase power source. The refrigeration cycle apparatus according to any one of claims 1 to 15.

17. The power conversion device (30B, 130B) A converter (27) that receives the AC power source and converts AC voltage into DC voltage; an inverter (25) that converts the DC voltage into an AC voltage and supplies the AC voltage to the motor; An indirect matrix converter comprising: The refrigeration cycle apparatus according to any one of claims 1 to 13.

18. The power conversion device (30C, 130C) is a matrix converter that directly converts the AC voltage of the AC power supply into an AC voltage of a predetermined frequency and supplies the AC voltage to the motor. The refrigeration cycle apparatus according to any one of claims 1 to 13.

19. The compressor (100) is any one of a scroll compressor, a rotary compressor, a turbo compressor, and a screw compressor. The refrigeration cycle apparatus according to any one of claims 1 to 13.

20. The motor (70) is a permanent magnet synchronous motor having a rotor (71) including a permanent magnet. The refrigeration cycle apparatus according to any one of claims 1 to 19.

Citation Information

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