Solar enthalpy-increasing air conditioning system

Abstract

The utility model discloses a solar enthalpy-increasing air conditioning system, which comprises a solar thermal collector, an energy storage water tank, a water pump, a plate heat exchanger, an economizer, a two-stage compressor and the like, the solar thermal collector is connected with the energy storage water tank through a first water circulation pipeline, and the plate heat exchanger is connected with the energy storage water tank through a second water circulation pipeline. The second evaporator is connected with the energy storage water tank through a third water circulation pipeline, a first pipeline of the double-stage compressor is connected with the condenser and the first evaporator, and the economizer is connected with the plate heat exchanger through a second pipeline and connected with the condenser through a second pipeline. The first evaporator is connected with the two-stage compressor through a first pipeline. The enthalpy increasing effect is achieved, the working efficiency of the compressor is improved, auxiliary heating can be achieved through the second evaporator when the load is low in winter, and the evaporator can be protected when an air conditioning system conducts refrigeration in summer.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of heating ventilation air conditioning, specifically relates to a solar energy enthalpy increasing air conditioning system. BACKGROUND

[0002] Over the past century, the significant progress in medical science and the remarkable progress in agricultural productivity brought by the "green revolution" have led to rapid growth in the global population. The growth of the population, coupled with changes in lifestyle and an increase in the desire for improved quality of life, has led to an ever-increasing demand for energy worldwide. To meet this demand for energy, both non-renewable resources, such as fossil fuels, and renewable resources, such as solar and wind energy, are used. Although fossil fuels have historically played a role in electricity generation, they currently face two major challenges: the problem of environmental pollution and global warming through the emission of greenhouse gases such as carbon dioxide. As non-renewable resources, their availability is limited and can be unstable. Therefore, given the limited nature of primary energy and its impact on the environment, a dual strategy must be adopted: reducing energy demand through storage and reducing the inefficiency of energy consumption units; and leading the development of renewable energy. According to the results of a report, activities related to buildings account for 30% of the total final energy consumption in the world and 26% of global energy-related emissions. This emission profile includes 8% of direct emissions from buildings and 18% of indirect emissions from the production of electricity and heat used within these buildings. Given the large proportion of energy related to buildings, it is necessary to address the problem of low energy efficiency, implement energy storage solutions, and integrate advanced technologies for renewable energy in these structures.

[0003] The utility model discloses a kind of solar energy enthalpy increasing heat pump refrigeration heating equipment, which is heated by solar energy for its heat process, to effectively save electric energy.The equipment can play the effect of enthalpy increasing heat supplement to a certain extent, but there are also problems such as insufficient heat storage.

[0004] The utility model discloses a kind of jet enthalpy increasing refrigeration heating equipment, which is heated by relatively high temperature gas of back gas port for compressor, to effectively improve efficiency.The equipment can play the effect of enthalpy increasing heat supplement to a certain extent, but there are also problems such as excessive energy dependence.

[0005] Household air source heat pump air conditioner with water system carries out energy transfer efficiently through water system, but when refrigeration water system flow is suddenly reduced in summer, evaporator freeze often appears problem such as. UTILITY MODEL CONTENTS

[0006] To solve the above technical problems, the utility model provides a kind of solar energy enthalpy increasing air conditioning system.

[0007] In order to achieve the above object, the technical scheme of the utility model is as follows:

[0008] The utility model provides a kind of solar energy enthalpy's air conditioning system, the air conditioning system includes solar energy heat collection subsystem and jet enthalpy air conditioning subsystem, solar energy heat collection subsystem includes: solar energy collector, energy storage water tank, plate heat exchanger, second evaporator, first water circulation pipeline, second water circulation pipeline, third water circulation pipeline;Jet enthalpy air conditioning subsystem includes: first evaporator, condenser, economizer, two-stage compressor, first pipeline, second pipeline;Air conditioning system further includes terminal device, fourth water circulation pipeline and fifth water circulation pipeline;The solar energy collector is connected with energy storage water tank by first water circulation pipeline, and the plate heat exchanger is connected with energy storage water tank by second water circulation pipeline simultaneously connected with economizer and two-stage compressor by second pipeline, and the second evaporator is connected with energy storage water tank by third water circulation pipeline, and the two-stage compressor is connected with condenser and first evaporator by first pipeline, and the economizer is connected with plate heat exchanger by second pipeline simultaneously connected with condenser by second pipeline, and the first evaporator is connected with two-stage compressor by first pipeline;The terminal device is used for heat exchange with air;The solar energy collector selects light-collecting heat collector, including the parabolic structure mirror surface that can focus sunlight to a small area heat absorber and the heat absorber pipeline that allows water flow.

[0009] Further, the first water pump is arranged on the second water circulation pipeline;The second water pump is arranged on the third water circulation pipeline;The third water pump is arranged on the fourth water circulation pipeline;The fourth water pump is arranged on the fifth water circulation pipeline.

[0010] Further, the first throttle valve is arranged on the first pipeline;The second throttle valve is arranged on the second pipeline;The third throttle valve is arranged on the third pipeline.

[0011] Further, one side of the plate heat exchanger is connected with the second water circulation pipeline, and the other side is connected with the second pipeline after the economizer.

[0012] Further, the first valve is arranged on the first water circulation pipeline;The second valve is arranged on the second water circulation pipeline;The third valve is arranged on the third water circulation pipeline;The fourth valve and the fifth valve are arranged at the intersection of the fourth water circulation pipeline and the fifth water circulation pipeline.

[0013] Further, the first valve, the second valve and the third valve are all one-way valves;The fourth valve and the fifth valve are all 3-way stop valves.

[0014] Further, the double-stage compressor is a screw double-stage compressor, comprising a first-stage compressor, a second-stage compressor and a jet device, refrigerant enters the compressor from an air inlet, is compressed into high-pressure gas by the first-stage compressor, high-temperature gas is injected into the compressor in the jet enthalpy increasing area, is transported to the second-stage compressor after being mixed with the first-stage high-pressure gas, and is output after being compressed again.

[0015] Further, the first evaporator and the second evaporator are both plate evaporators and are composed of a plurality of parallel metal plates, refrigerant and cooled liquid flow between the plates to exchange heat.

[0016] Further, the economizer is a thermal expansion economizer and comprises a shell made of pressure-resistant material, a refrigerant flow pipeline and a throttling device, liquid refrigerant enters the economizer, the branch liquid refrigerant is rapidly reduced in pressure by the internal throttling device in the economizer, part of the liquid refrigerant starts to evaporate, and the temperature of the main refrigerant is reduced due to the fact that the evaporation process of the branch refrigerant needs to absorb heat from the main refrigerant.

[0017] The air conditioning system of the utility model will heat water through a solar heat collector, store the heated water in a heat preservation water tank, heat the air conditioning refrigerant by the heated water in the plate heat exchanger, increase the enthalpy to improve the working efficiency of the compressor, flow through the second evaporator to assist heating when the load is low in winter, protect the evaporator when the air conditioning system is refrigerating in summer, and prevent the evaporator from being damaged due to insufficient water flow or low-temperature environment and other factors. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 FIG. 2 is a winter operation diagram of the solar enthalpy-increasing air conditioning system of the utility model.

[0019] Fig. 2 FIG. 3 is a summer operation diagram of the solar enthalpy-increasing air conditioning system of the utility model.

[0020] Fig. 3 FIG. 4 is a summer refrigeration anti-freezing principle diagram of the solar enthalpy-increasing air conditioning system of the utility model.

[0021] Among them, 1-solar collector, 2-energy storage tank, 3-first water pump, 4-second water pump, 5-plate heat exchanger, 6-first evaporator, 7-second evaporator, 8-condenser, 9-economizer, 10-two-stage compressor, 11-first pipeline, 12-second pipeline, 13-first water circulation pipeline, 14-second water circulation pipeline, 15-third water circulation pipeline, 16-first throttle valve, 17-second throttle valve, 18-first valve, 19-second valve, 20-third valve, 21-fourth valve, 22-fifth valve, 23-terminal device, 24-fourth water circulation pipeline, 25-fifth water circulation pipeline, 26-third water pump, 27-fourth water pump, 28-third throttle valve, 29-third pipeline. Detailed Implementation

[0022] The preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0023] Example 1: Winter Heating

[0024] In order to achieve the purpose of this utility model, such as Figs. 1 to 3 As shown, this utility model provides a solar-powered enthalpy-enhancing air conditioning system, including: a solar collector 1, an energy storage tank 2, a first water pump 3, a second water pump 4, a plate heat exchanger 5, a first evaporator 6, a second evaporator 7, a condenser 8, an economizer 9, and a two-stage compressor 10. In some embodiments, the solar collector 1 is connected to the energy storage tank 2 via a first water circulation pipe 13. In some embodiments, the plate heat exchanger 5 is connected to the energy storage tank 2 via a second water circulation pipe 14, and simultaneously connected to the economizer 9 and the two-stage compressor 10 via a third pipe 29; the second evaporator 7 is connected to the energy storage tank 2 via a third water circulation pipe 15; the two-stage compressor 10 is connected to the condenser 8 and the first evaporator 6 via a first pipe 11; the economizer 9 is connected to the plate heat exchanger 5 via a third pipe 29, and simultaneously connected to the condenser 8 via a third pipe 29; and the first evaporator 6 is connected to the two-stage compressor 10 via a first pipe 11.

[0025] In some embodiments, the first water pump 3 is disposed on the second water circulation pipe 14; the second water pump 4 is disposed on the third water circulation pipe 15; the third water pump 26 is disposed on the fourth water circulation pipe 24; and the fourth water pump 27 is disposed on the fifth water circulation pipe 25.

[0026] In some embodiments, a first throttle valve 16 is disposed in a first pipe 11; a second throttle valve 17 is disposed in a second pipe 12; and a third throttle valve 28 is disposed in a third pipe 29.

[0027] In some embodiments, one side of the plate heat exchanger 5 is connected to the pipeline of the second water circulation pipe 14, and the other side is connected to the pipeline of the second pipe 12 after the economizer 9.

[0028] In some embodiments, the first valve 18 is arranged in the first water circulation pipeline 13; the second valve 19 is arranged in the second water circulation pipeline 14; the third valve 20 is arranged in the third water circulation pipeline 15; the fourth valve 21 and the fifth valve 22 are both arranged at the intersection of the fourth water circulation pipeline 24 and the fifth water circulation pipeline 25.

[0029] In some embodiments, the terminal device 23 is used for heat exchange with air. In some embodiments, the first valve 18, the second valve 19 and the third valve 20 are all one-way valves; the fourth valve 21 and the fifth valve 22 are both 3-way plug valves.

[0030] In some embodiments, the solar collector 1 is a light-concentrating collector, which includes a parabolic mirror that can focus sunlight onto a small-area heat absorber and a heat absorber pipeline that allows water flow.

[0031] In some embodiments, the two-stage compressor 10 is a screw-type two-stage compressor, which includes a first-stage compressor, a second-stage compressor and an injection device.

[0032] In some embodiments, the first evaporator 6 and the second evaporator 7 are both plate-type evaporators, which are composed of a plurality of parallel metal plates, and the refrigerant and the cooled liquid flow between the plates to exchange heat.

[0033] In some embodiments, the economizer 9 is a thermal expansion economizer, which includes a shell made of pressure-resistant material, an evaporator part for evaporation and heat exchange of the refrigerant and a valve for adjusting flow or pressure.

[0034] Specifically, the solar collector 1 circulates and heats the water in the heat-insulating and energy-storing water tank 2, the heated hot water can be delivered to the plate-type heat exchanger 5 and exchange heat with the refrigerant in the second pipeline 12 from the economizer 9 to increase the enthalpy of the refrigerant, and the heated refrigerant is delivered to the two-stage compressor 10 to increase the overall efficiency of the compressor by the way of jet injection and enthalpy increase; when the indoor load is very small in winter, a part of the hot water in the heat-insulating and energy-storing water tank 2 can be delivered to the second evaporator 7 for heating, at this time, the first evaporator 6 in the air conditioning system can stop working or work at a small power; when the indoor load is very large in winter, a part of the hot water in the heat-insulating and energy-storing water tank 2 can be delivered to the second evaporator 7 for auxiliary heating, at this time, the first evaporator 6 in the air conditioning system works at a normal power.

[0035] Embodiment Example 2: summer refrigeration

[0036] In order to achieve the purpose of the present application, like Figs. 2 to 3As shown, the utility model provides a kind of solar energy enthalpy's air conditioning system, comprising: solar collector 1, energy storage water tank 2, water pump, plate heat exchanger 5, first evaporator 6, second evaporator 7, condenser 8, economizer 9, two-stage compressor 10 etc., the solar collector 1 is connected with energy storage water tank 2 by first water circulation pipeline 13, plate heat exchanger 5 is connected with energy storage water tank 2 by second water circulation pipeline 14, simultaneously by second pipeline 12 with economizer 9 and two-stage compressor 10 are connected, second evaporator 7 is connected with energy storage water tank 2 by third water circulation pipeline 15, two-stage compressor 10 is connected with condenser 8 and first evaporator 6 by first pipeline 11, economizer 9 is connected with plate heat exchanger 5 by second pipeline 12, simultaneously by second pipeline 12 with condenser 8 are connected, first evaporator 6 is connected with two-stage compressor 10 by first pipeline 11.

[0037] In some embodiments, the first water pump 3 is arranged on the second water circulation pipeline 14;The second water pump 4 is arranged on the third water circulation pipeline 15;The third water pump 26 is arranged on the fourth water circulation pipeline 24;The fourth water pump 27 is arranged on the fifth water circulation pipeline 25.

[0038] In some embodiments, the first throttle valve 16 is arranged on the first pipeline 11;The second throttle valve 17 is arranged on the second pipeline 12;The third throttle valve 28 is arranged on the third pipeline 29.

[0039] In some embodiments, one side of plate heat exchanger 5 is connected with the pipeline of second water circulation pipeline 14, and the other side is connected with the pipeline of second pipeline 12 after economizer 9.

[0040] In some embodiments, the first valve 18 is arranged on the first water circulation pipeline 13;The second valve 19 is arranged on the second water circulation pipeline 14;The third valve 20 is arranged on the third water circulation pipeline 15;The fourth valve 21 and the fifth valve 22 are arranged at the intersection of the fourth water circulation pipeline 24 and the fifth water circulation pipeline 25.

[0041] In some embodiments, the terminal device 23 is used for heat exchange with air.In some embodiments, the first valve 18, the second valve 19 and the third valve 20 are all one-way valves;The fourth valve 21 and the fifth valve 22 are all 3-way stop valves.

[0042] In some embodiments, the solar collector 1 selects a light-concentrating collector, including parabolic mirror surface that can focus sunlight on a small area of heat absorber and heat absorber pipeline that allows water flow.

[0043] In some embodiments, the two-stage compressor 10 selects a screw two-stage compressor, including first-stage compressor, second-stage compressor and jet device.

[0044] In some embodiments, the first evaporator 6 and the second evaporator 7 are both plate evaporators, which are composed of a plurality of parallel metal plates, and the refrigerant and the cooled liquid flow between the plates to exchange heat.

[0045] In some embodiments, the economizer 9 is a thermal expansion economizer, which includes a shell made of pressure-resistant material, an evaporator part for evaporation and heat exchange of the refrigerant, and a valve for adjusting the flow or pressure.

[0046] Specifically, the solar heat collector 1 heats the water in the heat preservation energy storage water tank 2, and the heated hot water can be delivered to the plate heat exchanger 5 and exchanged with the refrigerant in the second pipeline 12 from the economizer 9 to increase the enthalpy of the refrigerant, and the heated refrigerant is delivered to the double-stage compressor 10 to improve the overall efficiency of the compressor by means of jet augmentation enthalpy.

[0047] In order to further optimize the implementation effect of the utility model, in another embodiment of the utility model, on the basis of the foregoing content, a plurality of solar heat collectors can be arranged in parallel to meet greater demand.

[0048] The above description is only the preferred embodiment of the utility model, and it should be pointed out that for ordinary skilled persons in the art, without departing from the creative concept of the utility model, a number of modifications and improvements can be made, which all belong to the protection scope of the utility model.

Claims

1. A solar energy heat boost air conditioning system, characterized in that, The air conditioning system comprises a solar heat collecting subsystem and an air injection enthalpy increasing air conditioning subsystem, the solar heat collecting subsystem comprises a solar heat collector (1), an energy storage water tank (2), a plate heat exchanger (5), a second evaporator (7), a first water circulation pipeline (13), a second water circulation pipeline (14), and a third water circulation pipeline (15); the air injection enthalpy increasing air conditioning subsystem comprises a first evaporator (6), a condenser (8), an economizer (9), a two-stage compressor (10), a first pipeline (11), and a second pipeline (12); The air conditioning system further comprises a terminal device (23), a fourth water circulation pipeline (24), and a fifth water circulation pipeline (25); The solar heat collector (1) is connected with the energy storage water tank (2) through the first water circulation pipeline (13), the plate heat exchanger (5) is connected with the energy storage water tank (2) through the second water circulation pipeline (14), and is connected with the economizer (9) and the two-stage compressor (10) through the second pipeline (12); the second evaporator (7) is connected with the energy storage water tank (2) through the third water circulation pipeline (15); the two-stage compressor (10) is connected with the condenser (8) and the first evaporator (6) through the first pipeline (11); the economizer (9) is connected with the plate heat exchanger (5) through the second pipeline (12), and is connected with the condenser (8) through the second pipeline (12); the first evaporator (6) is connected with the two-stage compressor (10) through the first pipeline (11); the terminal device (23) is connected with the first evaporator (6) and the second evaporator (7) through the fourth water circulation pipeline (24) and the fifth water circulation pipeline (25); The terminal device (23) is used for heat exchange with air; the solar heat collector (1) is a light-concentrating collector, which comprises a parabolic mirror surface for focusing sunlight onto a heat absorber and a heat absorber pipeline allowing water flow.

2. The solar energy boosted air conditioning system of claim 1, wherein, Further comprising a first water pump (3) and a second water pump (4), wherein the first water pump (3) is arranged in the second water circulation pipeline (14); and the second water pump (4) is arranged in the third water circulation pipeline (15).

3. The solar energy boosted air conditioning system of claim 2, wherein, Further comprising a third water pump (26) and a fourth water pump (27), wherein the third water pump (26) is arranged in the fourth water circulation pipeline (24); and the fourth water pump (27) is arranged in the fifth water circulation pipeline (25).

4. The solar boosted air conditioning system of claim 1, wherein, Further comprising a first throttling valve (16), a second throttling valve (17), a third throttling valve (28), and a third pipeline (29), wherein the first throttling valve (16) is arranged in the first pipeline (11); the second throttling valve (17) is arranged in the second pipeline (12); and the third throttling valve (28) is arranged in the third pipeline (29).

5. The solar boosted air conditioning system of claim 1, wherein, Further comprising a first valve (18), a second valve (19) and a third valve (20), wherein the first valve (18) is arranged in the first water circulation pipeline (13); the second valve (19) is arranged in the second water circulation pipeline (14); and the third valve (20) is arranged in the third water circulation pipeline (15).

6. The solar boosted air conditioning system of claim 5, wherein, Further comprising a fourth valve (21) and a fifth valve (22), wherein the fourth valve (21) and the fifth valve (22) are arranged at the intersection of the fourth water circulation pipeline (24) and the fifth water circulation pipeline (25).

7. The solar boosted air conditioning system of claim 6, wherein, The first valve (18), the second valve (19) and the third valve (20) are all one-way valves; the fourth valve (21) and the fifth valve (22) are all 3-way stopcock valves.

8. The solar boosted air conditioning system of claim 1, wherein, The double-stage compressor (10) is a screw double-stage compressor.

9. The solar boosted air conditioning system of claim 1, wherein, The first evaporator (6) and the second evaporator (7) are both plate evaporators, which are composed of a plurality of parallel metal plates, and the refrigerant and the cooled liquid flow between the metal plates to exchange heat.

10. The solar boosted air conditioning system of claim 1, wherein, The economizer (9) is a thermal expansion economizer.

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