Central Air-Conditioning System

Abstract

A central air-conditioning system, comprises a plurality of air-conditioning assemblies (1) and a plurality of range hood assemblies (2); each air-conditioning assembly (1) comprises a compressor (11), a first heat exchanger (12) and a second heat exchanger (13) which are connected with each other through refrigerating medium pipes (14); all the range hood assemblies (2) are in communication with the public flue (6); a third heat exchanger (3) and the second heat exchanger (13) is connected through a secondary refrigerant channel (4); each end of each secondary refrigerant channel (4) respectively exchanges heat with the second heat exchanger (13) and the third heat exchanger (3). As all the range hood assemblies (2) are in communication with the public flue (6), the third heat exchanger (3) exchanges heat with the second heat exchangers (13) through the secondary refrigerant channel (4), when the system is operating, the heat energy generated by the air-conditioning assemblies (1) can be discharged through the public flue (6).

Claims

1. A central air-conditioning system for installing in a building with a plurality of kitchens and a public flue (6), the system comprising a plurality of air-conditioning assemblies (1) and a plurality of range hood assemblies (2); each air-conditioning assembly (1) comprising a compressor (11), a first heat exchanger (12) and a second heat exchanger (13) which are connected with each other through refrigerating medium pipes (14); each range hood assembly (2) having an air outlet (21); wherein, each range hood assembly (2) is disposed inside each kitchen (5) in the building, and all the range hood assemblies (2) in the building are in communication with the public flue (6); a third heat exchanger (3) is disposed inside the public flue (6), the second heat exchanger (13) of each air-conditioning assembly (1) is connected with the third heat exchanger (3) through a secondary refrigerant channel (4) with two ends; the secondary refrigerant from one end of each secondary refrigerant channel (4) exchanges heat inside the corresponding second heat exchanger (13), and the secondary refrigerant from the other end of each secondary refrigerant channel (4) exchanges heat inside the third heat exchanger (3).

2. The system of claim 1, wherein a flue fan (7) with an air inlet (71) and an air outlet (72) is disposed inside the public flue (6), the air outlet (21) of each range hood assembly (2) is in communication with the air inlet (71) of the flue fan (7), and the air outlet (72) of the flue fan (7) communicates with the outside of the building.

3. The system of claim 2, wherein each range hood assembly (2) comprises a fan for exhausting the fume from each kitchen to the public flue (6).

4. The system of claim 1, wherein each building has a plurality of stairwells, each stairwell has two groups of kitchens, each group of kitchens corresponds to one air-conditioning assembly (1) and one group of range hood assemblies (2), each group of range hood assemblies (2) corresponds to one air-conditioning assembly (1), and the second heat exchanger (13) of each air-conditioning assembly (1) is communicated with the third heat exchanger (3) through the corresponding secondary refrigerant channel (4).

5. The system of claim 1, wherein a driving pump is disposed on the secondary refrigerant channel (4) to drive the secondary refrigerant to flow in the secondary refrigerant channel (4).

6. The system of claim 1, wherein further comprises a sharing air duct (8) communicating with each kitchen (5); each air-conditioning assembly (1) has a fresh air inlet (15) and a fresh air outlet (16), and the fresh air outlet (16) in communication with each kitchen (5) through the sharing air duct (8).

7. The system of claim 6, wherein a fresh air purification device (17) is disposed inside the air duct between the fresh air inlet (15) and the fresh air outlet (16).

8. The system of claim 7, wherein the first heat exchanger (12) is an evaporator having an air outlet, the second heat exchanger (13) is a condenser, and the air outlet of the evaporator is the fresh air outlet (16).

9. The system of claim 8, wherein each air-conditioning assembly (1) comprises a housing (10), and the housing (10) has a first chamber (100) and a second chamber (101); the compressor (11) and the condenser are disposed in the first chamber (100), the evaporator and a fan (18) working together with the evaporator are disposed in the second chamber (101), and the fresh air outlet (16) is formed on the second chamber (101) of the housing (10).

10. The system of claim 9, wherein the fresh air inlet (15) is formed on the second chamber (101) of the housing (10), the fresh air inlet (15) and the fresh air outlet (16) are respectively disposed on two opposite sides of the housing (10), and the fresh air purification device (17) is disposed in the second chamber (101), the fresh air purification device (17) is adjacent to the fresh air inlet (15), and the evaporator is adjacent to the fresh air outlet (16).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG. 1 is a view of a central air-conditioning system according to an embodiment of the present invention;

[0018] FIG. 2 is a perspective view of an air-conditioning assembly according to the embodiment of the present invention;

[0019] FIG. 3 is a view showing the internal structure of the air-conditioning assembly according to the embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

[0020] The present invention will be further described below in detail with reference to the accompanying drawings by embodiments.

[0021] FIGS. 1 to 3 show a preferred embodiment of the central air-conditioning system of the present invention. The system is installed in a building with a plurality of kitchens 5 and a public flue 6. The central air-conditioning system comprises a plurality of air-conditioning assemblies 1 and a plurality of range hood assemblies 2; each air-conditioning assembly 1 comprising a compressor 11, a first heat exchanger 12 and a second heat exchanger 13 which are connected with each other through refrigerating medium pipes 14. A four-way valve (not shown) is disposed on the refrigerating medium pipes 14. The operating principle of the air-conditioning assembly 1 is the same as that of the existing air conditioner, and will not be repeated here.

[0022] Each building has a plurality of stairwells, each stairwell has two groups of kitchens, two groups of kitchens are respectively distributed at two sides of each stairwell, and each range hood assembly 2 is disposed inside each kitchen 5 in the building, and all the range hood assemblies 2 in the building are in communication with the public flue 6, a third heat exchanger 3 is disposed inside the public flue 6, the second heat exchanger 13 of each air-conditioning assembly 1 is connected with the third heat exchanger 3 through a secondary refrigerant channel 4 with two ends. A driving pump is disposed on the secondary refrigerant channel 4 to drive the secondary refrigerant to flow inside the secondary refrigerant channel 4, the secondary refrigerant may be water, ethylene glycol, glycerol, etc. The secondary refrigerant from one end of each secondary refrigerant channel 4 exchanges heat inside the corresponding second heat exchanger 13, and the secondary refrigerant from the other end of each secondary refrigerant channel 4 exchanges heat inside the third heat exchanger 3.

[0023] In this embodiment, each group of kitchens of one stairwell corresponds to one air-conditioning assembly 1 and one group of range hood assemblies 2, each group of range hood assemblies 2 corresponds to one air-conditioning assembly 1, and two second heat exchangers 13 of two air-conditioning assemblies 1 are communicated with the third heat exchanger 3 through the corresponding secondary refrigerant channel 4.

[0024] Each range hood assembly 2 comprises a fan for exhausting the fume from each kitchen to the public flue 6. A flue fan 7 with an air inlet 71 and an air outlet 72 is disposed inside the public flue 6, the air outlet 21 of each range hood assembly 2 is in communication with the air inlet 71 of the flue fan 7, and the air outlet 72 of the flue fan 7 communicates with the outside of the building. The fume in the public flue 6 is exhausted to the outside through the flue fan 7.

[0025] The air-conditioning assembly 1 in this embodiment can provide fresh air for each kitchen. In detail, the system further comprises two sharing air ducts 8 each communicating with each kitchen 5, each air-conditioning assembly 1 has a fresh air inlet 15 and a fresh air outlet 16. A fresh air purification device 17 is disposed inside the air duct between the fresh air inlet 15 and the fresh air outlet 16, and the fresh air outlet 16 in communication with each kitchen 5 through one sharing air duct 8.

[0026] Usually, by switching a four-way valve, the first heat exchanger is used as an evaporator, the second heat exchanger is used as a condenser, and the air outlet of the evaporator is the fresh air outlet 16.

[0027] The air-conditioning assembly 1 in this embodiment further comprises a housing 10, and the housing 10 has a first chamber 100 and a second chamber 101; the compressor 11 and the condenser are disposed in the first chamber 100, the evaporator and a fan 18 working together with the evaporator are disposed in the second chamber 101, and the fresh air outlet 16 is formed on the second chamber 101 of the housing 10.

[0028] Additionally, the fresh air inlet 15 is formed on the second chamber 101 of the housing 10, the fresh air inlet 15 and the fresh air outlet 16 are respectively disposed on two opposite sides of the housing 10, and the fresh air purification device 17 is disposed in the second chamber 101, the fresh air purification device 17 is adjacent to the fresh air inlet 15, and the evaporator is adjacent to the fresh air outlet 16.