CN215062955U - High-efficient supercritical multistage tonifying qi increases enthalpy system - Google Patents
High-efficient supercritical multistage tonifying qi increases enthalpy system Download PDFInfo
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- CN215062955U CN215062955U CN202120556263.6U CN202120556263U CN215062955U CN 215062955 U CN215062955 U CN 215062955U CN 202120556263 U CN202120556263 U CN 202120556263U CN 215062955 U CN215062955 U CN 215062955U
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Abstract
The utility model relates to a high-efficient supercritical multistage tonifying qi increases enthalpy system belongs to industry, commercial heating with hot technical field. The liquid working medium out of the condenser enters a flash evaporator after being throttled by a primary expansion valve, a refrigerant in the flash evaporator is separated into liquid and gas, the gas refrigerant is supplemented into a No. 1 middle cavity and an electromagnetic heating module through a gas supplementing pipeline, and a compressor continuously pressurizes until the refrigerant is saturated; the electromagnetic heating module heats and pressurizes the gaseous refrigerant in the capillary pipeline, the gaseous refrigerant is supplemented into the No. 2 intermediate cavity again, the pressure of the refrigerant is released, the refrigerant can be pressurized again, the refrigerant enters the condenser for heat exchange after reaching secondary saturation, and the liquid refrigerant enters the secondary expansion valve for secondary throttling after coming out from the flash evaporator. The invention effectively solves the problems that the conventional air source heat pump unit can not stably operate in cold regions and has low operation performance. Safe and reliable, wide application, and remarkable economic benefit of energy conservation and social benefit of emission reduction.
Description
Technical Field
The utility model relates to a high-efficient supercritical multistage tonifying qi increases enthalpy system belongs to industry, commercial heating with hot technical field.
Background
The air-supplying enthalpy-increasing system can add air-supplying enthalpy-increasing in the operation system of the air source heat pump unit aiming at the operation under the low-temperature working condition, and improves the operation efficiency of the system. The air-supplying enthalpy-increasing compressor adopts a two-stage throttling middle air-supplying technology, and a flash evaporator is used for gas-liquid separation, so that the enthalpy-increasing effect is realized. The air is compressed and air is supplemented for mixed cooling at the medium and low pressure, and then the air is normally compressed at the high pressure, so that the air displacement of the compressor is improved, and the purpose of improving the heating capacity in the low-temperature environment is achieved.
Most products in the market are divided into a single-stage air-supply enthalpy-increasing air source heat pump system technology, a quasi-air-supply enthalpy-increasing system technology, a cascade type and a composite system technology due to the difference of product structure structures. The above modes are technical means for improving the heating capacity of the air source heat pump unit in a low-temperature environment, but the problems that the conventional air source heat pump unit cannot stably operate in a cold area, the heating efficiency is low and the like exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that current heat pump set can not the steady operation in cold areas, a high-efficient supercritical multistage tonifying qi increases enthalpy system is provided, this system has set up the two-stage refrigerant sunction inlet at conventional tonifying qi increases enthalpy system, and set up electromagnetic heating capillary pipeline module at second grade refrigerant sunction inlet front end, in order to realize that second grade high temperature high pressure refrigerant mends the high-pressure intracavity of compressor smoothly, make the system obtain absorbing higher thermal refrigerant, carry out the heat transfer back in the condenser, improve unit leaving water temperature, promote unit operating efficiency, make air source heat pump set can the steady operation in cold areas, and the efficiency of heating can reach higher effect relatively.
The purpose of the utility model is realized by the following technical scheme.
An efficient supercritical multistage gas-supplementing enthalpy-increasing system, comprising: the device comprises a compressor low-pressure cavity, a first air supplementing cavity, a second air supplementing cavity, a compressor high-pressure cavity, a condenser, a first expansion valve, a flash evaporator, an electromagnetic heating cavity, a second expansion valve and an evaporator.
Two air supplementing ports are arranged between a high-pressure cavity and a low-pressure cavity driven by a single motor and are respectively called as a first air supplementing cavity and a second air supplementing cavity; after absorbing heat in the air through the evaporator, the refrigerant is injected into a low-pressure cavity of the compressor; at the moment, the compressor motor starts to work, the linkage transmission shaft compresses the refrigerant in the cavity, and finally the high-temperature and high-pressure liquid refrigerant is discharged from the outlet of the high-pressure cavity of the compressor after the refrigerant is saturated; the liquid refrigerant exchanges heat with a water system through a condenser, heat is released into the water system, and the refrigerant is changed from a high-temperature high-pressure state to a medium-temperature high-pressure state. The liquid refrigerant passes through the expansion valve from the outlet of the condenser, so that the medium-temperature high-pressure liquid refrigerant is throttled into a low-temperature low-pressure state and enters the flash evaporator, the liquid refrigerant is boiled and vaporized rapidly in the flash evaporator, and gas-liquid two-phase separation is carried out. The gas refrigerant is supplied with gas through the first gas supply cavity, the second gas supply cavity and the electromagnetic heating cavity; and the liquid refrigerant enters the second expansion valve again for pressure reduction after passing through the flash evaporator, and the refrigerant returns to the normal-pressure normal-temperature gas state and enters the evaporator to complete a closed-loop working cycle.
The air supply method of the system comprises the following steps:
the method comprises the following steps: the first-stage air supplement process: after the condenser releases heat, the refrigerator converts the liquid refrigerant with medium temperature and high pressure into a low-temperature and low-pressure state through the first expansion valve, the low-pressure refrigerant enters the flash evaporator to be subjected to liquid-gas separation, the gaseous low-pressure refrigerant separated by the flash evaporator enters the low-pressure cavity of the compressor through the first air supply cavity, and the refrigerant in the low-pressure cavity of the compressor is in a normal-pressure state at the moment to be subjected to primary air supply; the low pressure of the gaseous low-pressure refrigerant separated by the flash evaporator is higher than the normal pressure;
the second method comprises the following steps: and (3) secondary air supplement process: after the condenser releases heat, the refrigerator converts the liquid refrigerant with medium temperature and high pressure into a state with low temperature and low pressure through the first expansion valve, the liquid refrigerant enters the flash evaporator for liquid-gas separation, the gaseous low-pressure refrigerant separated by the flash evaporator firstly enters the electromagnetic heating cavity through the capillary pipeline for temperature rise and pressure rise, after reaching a pressure value, the gaseous low-pressure refrigerant enters the high-pressure cavity of the compressor through the second air supplementing cavity, finally, the compression process is finished through the compressor, the liquid refrigerant with high temperature and high pressure is produced, and the process is the secondary air supplementing process of the system. The low pressure of the gaseous low-pressure refrigerant separated by the flash evaporator is less than the high pressure;
advantageous effects
The utility model discloses a high-efficient supercritical multistage tonifying qi increases enthalpy system has effectively solved conventional air source heat pump set and can not the steady operation in cold areas, and the situation that the working property is low. Safe and reliable, wide application, and remarkable economic benefit of energy conservation and social benefit of emission reduction.
Drawings
Fig. 1 is a schematic structural diagram of the high-efficiency supercritical multistage gas-supplementing enthalpy-increasing system of the present invention.
In the figure: 1-compressor low pressure cavity, 2-first air supply cavity, 3-second air supply cavity, 4-compressor high pressure cavity, 5-condenser, 6-first expansion valve, 7-flash evaporator, 8-electromagnetic heating cavity, 9-second expansion valve, and 10-evaporator.
Detailed Description
The present invention will be further described with reference to the following examples and drawings.
An efficient supercritical multistage gas-supplementing enthalpy-increasing system, comprising: the device comprises a compressor low-pressure cavity 1, a first air supplementing cavity 2, a second air supplementing cavity 3, a compressor high-pressure cavity 4, a condenser 5, a first expansion valve 6, a flash evaporator 7, an electromagnetic heating cavity 8, a second expansion valve 9 and an evaporator 10.
Two air supplementing ports are arranged between a high-pressure cavity and a low-pressure cavity driven by a single motor and are respectively called as a first air supplementing cavity 2 and a second air supplementing cavity 3; after absorbing heat in air through the evaporator 10, the refrigerant is injected into the low-pressure cavity 1 of the compressor; at the moment, the compressor motor starts to work, the linkage transmission shaft compresses the refrigerant in the cavity, and finally the high-temperature and high-pressure liquid refrigerant is discharged from the outlet of the high-pressure cavity 4 of the compressor after the refrigerant is saturated; the liquid refrigerant exchanges heat with a water system through the condenser 5, heat is released into the water system, and the refrigerant is changed from a high-temperature high-pressure state to a medium-temperature high-pressure state. The liquid refrigerant passes through an expansion valve from the outlet of the condenser 5, so that the medium-temperature high-pressure liquid refrigerant is throttled into a low-temperature low-pressure state, enters the flash evaporator 7, is rapidly boiled and vaporized in the flash evaporator 7, and is subjected to gas-liquid two-phase separation. The gas refrigerant is supplied with gas through the first gas supply cavity 2, the second gas supply cavity 3 and the electromagnetic heating cavity 8; after passing through the flash evaporator 7, the liquid refrigerant enters the second expansion valve 9 again for pressure reduction, and the refrigerant returns to a normal-pressure normal-temperature gas state and enters the evaporator 10 to complete a closed-loop working cycle.
The specific operation process can be expressed as three operation processes:
the refrigerant circulating process: during normal work, the refrigerant absorbs heat in air through the evaporator 10, then the refrigerant starts to be injected into the compressor, firstly enters the low-pressure cavity 1 of the compressor, the motor of the compressor starts to work, the linkage transmission shaft compresses the refrigerant in the cavity, and finally the high-temperature and high-pressure liquid refrigerant is discharged from the outlet of the high-pressure cavity 4 of the compressor after the refrigerant is saturated, the refrigerant exchanges heat with a water system through the condenser 5, heat is released to the water system, and the refrigerant is changed from high-temperature and high-pressure to medium-temperature and high-pressure. The refrigerant passes through an expansion valve from the outlet of the condenser 5, so that the medium-temperature high-pressure liquid refrigerant is throttled into a low-temperature low-pressure state, enters the flash evaporator 7, and the liquid refrigerant is boiled and vaporized rapidly in the flash evaporator 7 to carry out gas-liquid two-phase separation. During the period, the gaseous refrigerant is used for air supplement, the liquid refrigerant enters the expansion valve again for pressure reduction after passing through the flash evaporator 7, the refrigerant is restored to the initial normal-temperature normal-pressure gaseous state and enters the evaporator 10, and a closed-loop working cycle is completed.
The first-stage air supplement process: after the heat of the condenser 5 is released, the refrigerator converts the liquid refrigerant with medium temperature and high pressure into a state with low temperature and low pressure through the first expansion valve 6, enters the flash evaporator 7 for liquid-gas separation, separates the gaseous low-pressure refrigerant, the pressure of the low-pressure refrigerant at the moment is larger than the normal pressure, and enters the compressor low-pressure cavity 1 in the normal pressure state through the first intermediate cavity for the primary air supplement process.
And (3) secondary air supplement process: after the condenser 5 releases heat, the refrigerator converts the medium-temperature high-pressure liquid refrigerant into a low-temperature low-pressure state through the first expansion valve 6, enters the flash evaporator 7 for liquid-gas separation, separates the separated gas-state low-pressure refrigerant, the pressure of the low-pressure refrigerant at the moment is smaller than the high pressure, firstly enters the electromagnetic heating cavity 8 through the capillary pipeline for heating and boosting, after reaching the pressure value, enters the compressor high-pressure cavity 4 in the high-pressure state through the second intermediate cavity, finally completes the compression process through the compressor, and produces the high-temperature high-pressure liquid refrigerant, wherein the process is the secondary air supplement process of the system.
Through industrial tests, in a cold region with the lowest outdoor environment temperature of-15 ℃, the water supply temperature of system facilities is 50 ℃, and the comprehensive energy efficiency (COP (coefficient of performance coefficient) of the system is 2.52; the system facility water supply temperature is 55 ℃, and the system comprehensive energy efficiency (COP (coefficient of performance) is 2.37; the system facility feed water temperature is 60 ℃, and the system comprehensive energy efficiency (COP (coefficient of performance) is 2.06. The general air-supplying enthalpy-increasing system can only achieve the comprehensive energy efficiency of about 1.8 in cold regions, and compared with the general system, the system has the characteristics of high heating efficiency, low exhaust temperature and stable operation.
The above detailed description further illustrates the objects, technical solutions and advantages of the present invention, and it should be understood that the above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (1)
1. The utility model provides a high-efficient supercritical multistage tonifying qi increases enthalpy system which characterized in that: the method comprises the following steps: the system comprises a compressor low-pressure cavity, a first air supplement cavity, a second air supplement cavity, a compressor high-pressure cavity, a condenser, a first expansion valve, a flash evaporator, an electromagnetic heating cavity, a second expansion valve and an evaporator;
two air supplementing ports are arranged between a high-pressure cavity and a low-pressure cavity driven by a single motor and are respectively called as a first air supplementing cavity and a second air supplementing cavity; after absorbing heat in the air through the evaporator, the refrigerant is injected into a low-pressure cavity of the compressor; at the moment, the compressor motor starts to work, the linkage transmission shaft compresses the refrigerant in the cavity, and finally the high-temperature and high-pressure liquid refrigerant is discharged from the outlet of the high-pressure cavity of the compressor after the refrigerant is saturated; the liquid refrigerant exchanges heat with a water system through a condenser, heat is released into the water system, and the refrigerant is changed from a high-temperature high-pressure state to a medium-temperature high-pressure state; the liquid refrigerant passes through an expansion valve from the outlet of the condenser, so that the medium-temperature high-pressure liquid refrigerant is throttled into a low-temperature low-pressure state, enters a flash evaporator, is rapidly boiled and vaporized in the flash evaporator, and is subjected to gas-liquid two-phase separation; the gas refrigerant is supplied with gas through the first gas supply cavity, the second gas supply cavity and the electromagnetic heating cavity; after passing through the flash evaporator, the liquid refrigerant enters the second expansion valve again for pressure reduction, and the refrigerant returns to the normal-pressure normal-temperature gas state and enters the evaporator to complete a closed-loop working cycle; and stable operation is realized through two-stage air supplement.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114811984A (en) * | 2022-04-29 | 2022-07-29 | 珠海格力电器股份有限公司 | Compressor and compressor air conditioning system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114811984A (en) * | 2022-04-29 | 2022-07-29 | 珠海格力电器股份有限公司 | Compressor and compressor air conditioning system |
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