COMPRESSOR, AIR CONDITIONER SYSTEM COMPRISING THE COMPRESSOR AND HEAT PUMP WATER HEATER SYSTEM

• US 20150078928A1
• Filed: 12/07/2012
• Published: 03/19/2015
• Est. Priority Date: 04/10/2012
• Status: Active Grant

• Current Assignee: National Engineering Research Center Of Drying Technology and Equipment
• Original Assignee: Huijun Wei, National Engineering Center of Green Refrigeration Equipment, Wantao Li
• Inventors: Wei, Huijun, Li, Wantao
• Granted Patent: US 10,041,482 B2
• Time in Patent Office: Days
• US Class Current: 417/245
• CPC Class Codes: F01C 21/10 Outer members for co-operation with rotary pistons; Casings casings for rotary engines or machines in general F16M
• CPC Class Codes: F04B 1/12 having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
• CPC Class Codes: F04B 25/04 having cylinders coaxial with, or parallel or inclined to, main shaft axis
• CPC Class Codes: F04C 18/356 with vanes reciprocating with respect to the outer member
• CPC Class Codes: F04C 23/001 of similar working principle
• CPC Class Codes: F04C 23/008 Hermetic pumps
• CPC Class Codes: F04C 28/02 specially adapted for several pumps connected in series or in parallel
• CPC Class Codes: F04C 29/0035 Equalization of pressure pulses silencing F04C29/06
• CPC Class Codes: F04C 29/042 by injecting a fluid injection of fluid for sealing, cooling or lubrication F04C29/0007
• CPC Class Codes: F25B 29/003 of the compression type system
• CPC Class Codes: F25B 31/00 Compressor arrangements

Abstract

Provided is a compressor, an air conditioner system comprising the compressor and a heat pump water heater system. The compressor comprises: a low-pressure compression component, a medium-pressure chamber, a low-pressure chamber gas discharge passageway, an enthalpy-increasing component, a high-pressure compression component, a medium-pressure gas passageway and a high-pressure chamber gas discharge passageway. The medium-pressure gas passageway comprises a passageway section at the side toward the low-pressure chamber gas discharge passageway and a passageway section at the side toward the high-pressure chamber gas suction passageway, wherein a ratio between a minimum cross sectional area of the passageway section at the side toward the low-pressure chamber gas discharge passageway and a minimum cross sectional area of the passageway section at the side toward the high-pressure chamber gas suction passageway is ranged from 1.4 to 4. In the compressor, the pressure fluctuation and the flow velocity fluctuation of the refrigerant are relatively smaller, which can improve the first-stage gas discharge plumpness and the second-stage gas suction plumpness, and increase the gas replenishment volume, thereby improving the working efficiency and the energy efficiency ratio of the compressor, and reducing the energy consumption.

Claims

1. A compressor, comprising:

a low-pressure compression component having a low-pressure chamber, configured to take in refrigerant and compress the refrigerant to form first medium-pressure refrigerant;

a medium-pressure chamber;

a low-pressure chamber gas discharge passageway, through which the first medium-pressure refrigerant from said low-pressure compression component is discharged into the medium-pressure chamber;

an enthalpy-increasing component, configured to convey second medium-pressure refrigerant into the medium-pressure chamber, the second medium-pressure refrigerant and the first medium-pressure refrigerant compressed gas being mixed to form mixed medium-pressure refrigerant in the medium-pressure chamber;

a high-pressure compression component including a high-pressure chamber, configured to take in the mixed medium-pressure refrigerant and compress the mixed medium-pressure refrigerant to form a third high-pressure refrigerant;

a medium-pressure gas passageway, through which the mixed medium-pressure refrigerant from the medium-pressure chamber is conveyed into the high-pressure compression component;

a high-pressure chamber gas discharge passageway, through which the high-pressure refrigerant is discharged from the high-pressure compression component;

wherein, the medium-pressure gas passageway comprises a passageway section at the side toward the low-pressure chamber gas discharge passageway, and a passageway section at the side toward the high-pressure chamber gas suction passageway, wherein, a ratio between minimum cross sectional area of the passageway section at the side toward the low-pressure chamber gas discharge passageway and minimum cross sectional area of the passageway section at the side toward the high-pressure chamber gas suction passageway is ranged from 1.4 to 4.

2. The compressor according to claim 1, wherein, the medium-pressure gas passageway further comprises an intermediate passageway section, which is disposed between the passageway section at the side toward the low-pressure chamber gas discharge passageway and the passageway section at the side toward the high-pressure chamber gas suction passageway;

wherein, a ratio H₂ between the minimum cross sectional area of the passageway section at the side toward the low-pressure chamber gas discharge passageway and a minimum cross sectional area of the intermediate passageway section is ranged from 1.2 to 2;

a ratio H₃ between the minimum cross sectional area of the intermediate passageway section and the minimum cross sectional area of the passageway section at the side toward the high-pressure chamber gas suction passageway is ranged from 1.2 to 2.

3. The compressor according to claim 1, wherein, a ratio between cross sectional area of the low-pressure chamber gas discharge passageway and cross sectional area of the high-pressure chamber gas discharge passageway is 1.2.

4. The compressor according to claim 1, wherein, a ratio H₁ between the minimum cross sectional area H_M of the medium-pressure gas passageway and minimum cross sectional area H_L of the low-pressure chamber gas discharge passageway is greater than 1.2.

5. The compressor according to claim 1, wherein, a volume ratio R₁ between volume V_H of the high-pressure chamber and volume V_L of the low-pressure chamber is ranged from 0.8 to 0.9.

6. The compressor according to claim 5, wherein:

the compressor further comprises a crankshaft (9);

the crankshaft (9) comprises a first eccentric part and a second eccentric part;

the low-pressure compression component comprises a low-pressure cylinder (2), and a low-pressure roller (10) which is disposed on the first eccentric part inside the low-pressure cylinder (2);

the low-pressure chamber is formed between the low-pressure cylinder (2) and the low-pressure roller (10);

the high-pressure compression component comprises a high-pressure cylinder (12), and a high-pressure roller (13) which is disposed on the second eccentric part inside the high-pressure cylinder (12); and

the high-pressure chamber is formed between the high-pressure cylinder (12) and the high-pressure roller (13).

7. The compressor according to claim 6, wherein:

eccentricity amount of the first eccentric part is equal to eccentricity amount of the second eccentric part; and

height of the high-pressure cylinder (12) is less than height of the low-pressure cylinder (2).

8. The compressor according to claim 6, wherein:

eccentricity amount of the first eccentric part is less than eccentricity amount of the second eccentric part; and

height of the high-pressure cylinder (12) is equal to height of the low-pressure cylinder (2).

9. The compressor according to claim 6, wherein:

a ratio between height and inner diameter of the low-pressure cylinder (2) is ranged from 0.4 to 0.55;

a ratio between height and inner diameter of the high-pressure cylinder (12) is ranged from 0.4 to 0.55;

a ratio between eccentricity amount of the first eccentric part and the inner diameter of the low-pressure cylinder (2) is ranged from 0.1 to 0.2; and

a ratio between eccentricity amount of the second eccentric part and the inner diameter of the high-pressure cylinder (12) is ranged from 0.1 to 0.2.

10. The compressor according to claim 1, wherein, a volume ratio R₂ between volume V_M of the medium-pressure chamber and volume V_L of the low-pressure chamber is greater than 1.

11. The compressor according to claim 1, wherein, the compressor further comprises:

a lower flange (3), which is provided under the low-pressure compression component, and said lower flange (3) is provided with a concave cavity at its lower part;

a lower cover plate (4), which is provided under the lower flange (3), and said lower cover plate (4) covers on the concave cavity of the lower flange (3) so that the medium-pressure chamber is formed by the lower flange (3) and the lower cover plate (4).

12. The compressor according to claim 1, wherein, the compressor further comprises:

an intermediate cylinder (203), which is provided between the low-pressure compression component and the high-pressure compression component, and the intermediate cylinder (203) is provided with a concave cavity at one side facing high-pressure compression component;

a pump baffle plate (205), which is provided between the high-pressure compression component and the intermediate cylinder (203), and the pump baffle plate covers on the concave cavity of the intermediate cylinder (203) so that the medium-pressure chamber is formed by the intermediate cylinder (203) and the pump baffle plate.

13. The compressor according to claim 1, wherein, the compressor further comprises:

a case component (309), configured to accommodate the low-pressure compression component and the high-pressure compression component;

an intermediate box (304), which is provided at an exterior of the case component (309), and the intermediate box (304) has an inner cavity which forms the medium-pressure chamber.

14. An air conditioner system, comprising a compressor, wherein, the compressor is the compressor according to claim 1.

15. A heat pump water heater system, comprising a compressor, wherein, the compressor is the compressor according to claim 1.

16. The compressor according to claim 2, wherein, a ratio between cross sectional area of the low-pressure chamber gas discharge passageway and cross sectional area of the high-pressure chamber gas discharge passageway is 1.2.

17. The compressor according to claim 2, wherein, a ratio H₁ between the minimum cross sectional area H_M of the medium-pressure gas passageway and minimum cross sectional area H_L of the low-pressure chamber gas discharge passageway is greater than 1.2.

18. The compressor according to claim 2, wherein, a volume ratio R₁ between volume V_H of the high-pressure chamber and volume V_L of the low-pressure chamber is ranged from 0.8 to 0.9.

19. The compressor according to claim 2, wherein, a volume ratio R₂ between volume V_M of the medium-pressure chamber and volume V_L of the low-pressure chamber is greater than 1.

20. The compressor according to claim 2, wherein, the compressor further comprises:

a lower flange (3), which is provided under the low-pressure compression component, and said lower flange (3) is provided with a concave cavity at its lower part;

a lower cover plate (4), which is provided under the lower flange (3), and said lower cover plate (4) covers on the concave cavity of the lower flange (3) so that the medium-pressure chamber is formed by the lower flange (3) and the lower cover plate (4).