Cold regenerative air conditioning apparatus

Abstract

An air conditioning apparatus includes a refrigerant tank, a cryogenic liquid pump, a condensing evaporator, a compressor, a user system, a throttle valve, a first reversing valve, and a second reversing valve. It operates in two modes. In the first mode, the refrigerant in the refrigerant tank flows sequentially from the refrigerant tank, the cryogenic liquid pump, the condensing evaporator, the first reversing valve, the compressor, the second reversing valve, the user system, the first reversing valve, the second reversing valve, the condensing evaporator, the throttle valve, and back to the refrigerant tank. In the second mode, refrigerant in the refrigerant tank flows sequentially from the refrigerant tank, the cryogenic liquid pump, the condensing evaporator, the first reversing valve, the second reversing valve, the user system, the first reversing valve, the compressor, the second reversing valve, the condensing evaporator, the throttle valve, and back to the refrigerant tank.

Claims

1. A cold regenerative air conditioning apparatus, comprising a refrigerant, a refrigerant tank, a cryogenic liquid pump, a condensing evaporator, a compressor, a user system, a throttle valve, a first reversing valve, and a second reversing valve, wherein the first reversing valve and the second reversing valve operate to form a first circuit of the refrigerant flow or a second circuit of the refrigerant flow, wherein the first circuit is configured such that during operation the refrigerant in the refrigerant tank flows sequentially from the refrigerant tank, the cryogenic liquid pump, the condensing evaporator, the first reversing valve, the compressor, the second reversing valve, the user system, the first reversing valve, the second reversing valve, the condensing evaporator, the throttle valve, and back to the refrigerant tank, wherein the second circuit is configured such that during operation the refrigerant in the refrigerant tank flows sequentially from the refrigerant tank, the cryogenic liquid pump, the condensing evaporator, the first reversing valve, the second reversing valve, the user system, the first reversing valve, the compressor, the second reversing valve, the condensing evaporator, the throttle valve, and back to the refrigerant tank.

2. The apparatus of claim 1, wherein each of the first reversing valve and the second reversing valve has a first inlet, a second inlet, a first outlet, and a second outlet, wherein, in the first circuit, the refrigerant sequentially passes the first inlet of the first reversing valve, the first outlet of the first reversing valve, the compressor, the first inlet of the second reversing valve, the second outlet of the second reversing valve, the user system, the second inlet of the first reversing valve, the second outlet of the first reversing valve, the second inlet of the second reversing valve, and the first outlet of the second reversing valve.

3. The apparatus of claim 2, wherein, in the second circuit, the refrigerant sequentially passes the first inlet of the first reversing valve, the second outlet of the first reversing valve, the second inlet of the second reversing valve, the second outlet of the second reversing valve, the user system, the second inlet of the first reversing valve, the first outlet of the first reversing valve, the compressor, the first inlet of the second reversing valve, and the first outlet of the second reversing valve.

4. The apparatus of claim 1, further comprising a cold exchanger have a first inlet, a second inlet, a first outlet, and a second outlet, wherein the first outlet of the cold exchanger is connected to the first inlet of the first reversing valve, and the second inlet of the cold exchanger is connected to the first outlet of the second reversing valve.

5. The apparatus of claim 4, wherein the refrigerant from the cryogenic liquid pump and the refrigerant from the colder exchanger exchange heat in the condensing evaporator.

6. The apparatus of claim 5, wherein the refrigerant from the condensing evaporator and the refrigerant from the first outlet of the second reversing valve exchange heat in the cold exchanger.

7. The apparatus of claim 1, wherein the compressor comprises a variable frequency speed regulation device.

Description

DESCRIPTION OF FIGURES

(1) FIG. 1 is a process schematic diagram of a heat pump type air conditioner of the existing technology.

(2) In FIG. 1: 1evaporator, 2filter, 3capillary, 4filter, 5condenser, 6reversing valve, 7gas-liquid separator, 8compressor.

(3) FIG. 2 is the schematic diagram of the heating process of a regenerative air conditioning apparatus of this invention.

(4) In FIG. 2: 1refrigerant tank, 2liquid refrigerant, 3cryogenic liquid pump, 3-1cold exchanger inlet pipeline, 4cold exchanger, 5compressor, 6user system, 7reversing valve, 8reversing valve, 9condensing evaporator, 10throttle valve.

(5) FIG. 3 is the schematic diagram of the refrigerating process of a regenerative air conditioning apparatus of this invention.

(6) In FIG. 3: 1refrigerant tank, 2liquid refrigerant, 3cryogenic liquid pump, 3-1cold exchanger inlet pipeline, 4cold exchanger, 5compressor, 6user system, 7reversing valve, 8reversing valve, 9condensing evaporator, 10throttle valve.

EMBODIMENTS

(7) In the following, this invention is further described in detail in conjunction with figures and embodiments.

Embodiment 1

(8) As shown in FIG. 2 and FIG. 3, a cold regenerative air conditioning apparatus, comprising of a heat supply circulation circuit and a cold supply circulation circuit, with the embodiment as follows.

(9) The liquid refrigerant 2 coming out from refrigerant tank 1, after boosting by cryogenic liquid pump 3, it is sent via condensing evaporator 9 into cold exchanger 4, to transfer the cold energy to the backflow refrigerant at a higher temperature, to release cold energy, the gaseous refrigerant at increased temperature flows via be channel of reversing valve 7.fwdarw.compressor 5.fwdarw.fe channel of reversing valve 8.fwdarw.user system 6.fwdarw.da channel of reversing valve 7.fwdarw.hg channel of reversing valve 8, enters the cold exchanger 4 and condensing evaporator 9, then flows via throttle valve 10 and returns to the refrigerant tank 1, so as to complete the heat supply circulation circuit of the cold regenerative air conditioning apparatus;

(10) The liquid refrigerant 2 coming out from refrigerant tank 1, after boosting by cryogenic liquid pump 3, is sent via condensing evaporator 9 into cold exchanger 4, to transfer the cold energy to the backflow refrigerant at a higher temperature, to release cold energy, the gaseous refrigerant at increased temperature flows via ba channel of reversing valve 7.fwdarw.he channel of reversing valve 8.fwdarw.user system 6.fwdarw.dc channel of reversing valve 7.fwdarw.compressor 5.fwdarw.fg channel of reversing valve 8, enters the cold exchanger 4 and condensing evaporator 9, and then returns via throttle valve 10 to the refrigerant tank 1, so as to complete the cold supply circulation circuit of the cold regenerative air conditioning apparatus.

(11) The said cold exchanger 4 is provided with necessary provisions to enhance heat transfer, such as increased fins, plate-fin heat exchanger, micro channel heat exchanger, and the cold exchange medium in said cold exchanger 4 works in an indirect cold transfer mode.

(12) The variable frequency speed regulation device can be used for the said compressor 5.

(13) Other structures not mentioned in the cold regenerative air conditioning apparatus of this invention are not described in detail, and are all designed with existing mature technologies.

(14) The said refrigerant tank 1 shall be provided with necessary thermal and cold insulation, such as thermal isolated vacuum container, and insulation materials such as pearlite.

(15) The equipment and their backup systems, pipes, instruments, valves, cold insulation and bypass facilities with regulation functions not described in this invention shall be configured with generally known mature technologies.

(16) Safety and regulation and control facilities associated with the cold regenerative air conditioning apparatus of this invention are provided, so that the apparatus can operate economically and safely with high thermal efficiency, to achieve the goal of energy conservation, consumption reduction and environmental protection.

(17) This invention has been made public with an optimum embodiment as above, however, it is not used to restrict this invention, all variations or decorations made by those familiar with this technology without deviating from the spirit and scope of this invention also falls into the scope of protection of this invention. Therefore, the scope of protection of this invention shall be that defined by the claims in this application.