CN210625025U - Air conditioning system capable of enhancing evaporation heat exchange effect - Google Patents
Air conditioning system capable of enhancing evaporation heat exchange effect Download PDFInfo
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- CN210625025U CN210625025U CN201921671201.9U CN201921671201U CN210625025U CN 210625025 U CN210625025 U CN 210625025U CN 201921671201 U CN201921671201 U CN 201921671201U CN 210625025 U CN210625025 U CN 210625025U
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Abstract
The utility model discloses an air conditioning system that can strengthen evaporation heat transfer effect. The air conditioning system comprises an indoor heat exchanger and an outdoor heat exchanger, wherein a pipeline between the indoor heat exchanger and the outdoor heat exchanger is provided with a pulse generator, and the pulse generator generates pulse to a refrigerant which flows into the indoor heat exchanger or the outdoor heat exchanger to strengthen the evaporation heat exchange effect of the indoor heat exchanger or the outdoor heat exchanger. The utility model discloses a thereby the pulse generator makes the refrigerant carry out the pulsation in the evaporimeter and flows and strengthened heat transfer performance, has improved air conditioning system's efficiency.
Description
Technical Field
The utility model relates to an air conditioning system especially relates to an air conditioning system that can strengthen evaporation heat transfer effect.
Background
In an air conditioning system, an evaporator is taken as one of core parts, the heat exchange performance of the evaporator has direct influence on the operation of the whole system, and the better heat exchange performance has important significance for reducing refrigerant filling, improving the system energy efficiency and developing the system in a small and light manner.
In order to improve the heat exchange effect of the evaporator in the prior art, the heat exchange performance of the evaporator is improved by mostly adopting a mode of matching round metal pipes with fins, but the effect is limited.
Therefore, how to provide an air conditioning system with better evaporation heat exchange effect is a technical problem to be solved urgently in the industry.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem of how to further improve the evaporation heat exchange performance of the air conditioning system in the prior art, the air conditioning system capable of enhancing the evaporation heat exchange effect is provided.
The utility model provides an air conditioning system, including indoor heat exchanger and outdoor heat exchanger, indoor heat exchanger with be equipped with pulse generator on the pipeline between the outdoor heat exchanger, pulse generator produces the pulsation to the refrigerant that will flow into indoor heat exchanger or outdoor heat exchanger and strengthens indoor heat exchanger or outdoor heat exchanger's evaporation heat transfer effect.
Preferably, the air conditioner further comprises a temperature sensor and a pressure sensor which are arranged on the upstream side of the pulsation generator according to the flow direction of a refrigerant, and the controller of the air conditioning system controls the amplitude and the vibration frequency of the pulsation generator according to the detection results of the temperature sensor and the pressure sensor on the upstream side of the pulsation generator.
Specifically, the controller receives detection results of the pressure sensor and the temperature sensor to calculate a gas-liquid state and a proportion of the refrigerant, and adjusts the vibration frequency and the vibration amplitude of the pulsation generator according to the proportion by combining the distance from the pulsation generator to the indoor heat exchanger or the outdoor heat exchanger and the length of the heat exchange tube of the indoor heat exchanger or the outdoor heat exchanger.
Specifically, the controller finds an enthalpy value h1 corresponding to the detection result in a pressure-enthalpy diagram, finds the enthalpy value h in a corresponding saturation state and the latent heat of vaporization r corresponding to the evaporation temperature according to the evaporation temperature, and uses a formula
And calculating to obtain the proportion of the gaseous refrigerant in the unit mass of the refrigerant steam.
Specifically, the vibration frequency range of the pulse generator is 0.5-2 Hz.
In one embodiment, when the air conditioning system is a heat pump air conditioning system, a set of temperature sensor and a set of pressure sensor are respectively arranged on the pipelines at two sides of the pulsation generator. The pipeline on the two sides of the pulse generator is respectively provided with a throttling device, the throttling devices open a throttling effect when the throttling devices are positioned on one side of the upstream of the pulse generator according to the flowing direction of a refrigerant, and each group of temperature sensors and pressure sensors are positioned between the pulse generator and the throttling devices.
Specifically, a solenoid valve is arranged on a pipeline of the indoor heat exchanger connected with one outlet of the four-way valve of the air conditioning system, two ends of the solenoid valve are connected in parallel with a branch, and a liquid storage tank and a solenoid valve are connected in series on the branch.
Specifically, a solenoid valve is arranged on a pipeline of the outdoor heat exchanger connected with one outlet of the four-way valve of the air conditioning system, two ends of the solenoid valve are connected in parallel with a branch, and a liquid storage tank and a solenoid valve are connected in series on the branch.
On the basis, the heat exchange tubes in the indoor heat exchanger and/or the outdoor heat exchanger can be corrugated tubes, and the indoor heat exchanger and/or the outdoor heat exchanger are fin type heat exchangers.
The utility model discloses on the basis of present air conditioning system's evaporimeter, through the form that changes the heat exchange tube and the mobile form of refrigerant, reach the purpose of reinforcing heat transfer. The structure is simple, and the heat exchange performance of the evaporator can be effectively improved, so that the overall energy efficiency of the system is improved; meanwhile, on the premise of achieving the same refrigerating/heating quantity, the whole system can be developed towards miniaturization and light weight.
Drawings
The invention is explained in more detail below with reference to exemplary embodiments and the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The principles and embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Fig. 1 is a specific embodiment of the air conditioning system of the present invention, in this embodiment, the air conditioning system is a heat pump air conditioning system, and includes a compressor 1, a four-way valve 2, an indoor heat exchanger 3, an outdoor heat exchanger 4, a throttling device, a gas-liquid separator 11, and other components. Wherein the compressor 1 is connected with an indoor heat exchanger 3 and an outdoor heat exchanger 4 through a four-way valve 2, a solenoid valve 5 is arranged on a pipeline of the indoor heat exchanger 3 connected with an outlet of the four-way valve 2, two ends of the solenoid valve are connected in parallel with a branch, and a liquid storage tank 6 and a solenoid valve 5 are connected in series on the branch. The pipeline of the outdoor heat exchanger 4 connected with one outlet of the four-way valve 2 of the air conditioning system is provided with an electromagnetic valve 5, two ends of the electromagnetic valve 5 are connected in parallel with a branch, and a liquid storage tank 6 and an electromagnetic valve 5 are connected in series on the branch. Two throttling devices are arranged between the indoor heat exchanger and the outdoor heat exchanger, the throttling devices can be electronic expansion valves specifically, when the electronic expansion valve 7 is positioned on the upstream side of the pulse generator 8 according to the flow direction of the refrigerant, the throttling effect is opened, and the electronic expansion valve 7 positioned on the downstream side of the pulse generator 8 closes the throttling effect and is only used as a switch valve for the refrigerant to pass through. When the air conditioning system is refrigerating, the high-temperature and high-pressure refrigerant is condensed by the condenser (outdoor heat exchanger) to become a high-temperature and low-pressure liquid refrigerant, and the high-temperature and high-pressure liquid refrigerant is expanded by the electronic expansion valve 7 to form a low-temperature and low-pressure liquid refrigerant and then flows into the evaporator (indoor heat exchanger).
A pulse generator 8 is arranged on a pipeline between the indoor heat exchanger 3 and the outdoor heat exchanger 4, and the pulse generator 8 generates pulse to the refrigerant flowing into the indoor heat exchanger or the outdoor heat exchanger to strengthen the evaporation heat exchange effect of the indoor heat exchanger or the outdoor heat exchanger. That is, the pulsation generator 8 pulsates the refrigerant flowing into the evaporator in the air conditioning system, thereby enhancing the evaporation heat exchange effect of the evaporator of the air conditioning system. When the air conditioning system is a single cooling system, the pulsation generator 8 is installed in the evaporator (upstream of the outdoor heat exchanger side).
According to experimental data, when the vibration frequency range of the pulse generator 8 is 0.5-2Hz, the evaporation heat exchange effect of the evaporator can be effectively enhanced. In a preferred embodiment, a temperature sensor 9 and a pressure sensor 10 disposed at an upstream side of the pulsation generator 8 in a refrigerant flow direction may be disposed between the evaporator and the electronic expansion valve 7, and then a controller of the air conditioning system controls the amplitude and the vibration frequency of the pulsation generator 8 according to detection results of the temperature sensor 9 and the pressure sensor 10. In the heat pump air conditioning system of the present embodiment, a set of temperature sensor and pressure sensor are respectively disposed on the pipelines on both sides of the pulsation generator 8, and specifically, two sets of temperature sensor 9 and pressure sensor 10 of the present embodiment are respectively installed between the pulsation generator 8 and one electronic expansion valve 7. The controller controls only one set of the temperature sensor and the pressure sensor on the upstream side of the pulsation generator 8 to detect the refrigerant flow direction, and controls the amplitude and the vibration frequency of the pulsation generator 8 based on the detection results.
The controller receives detection results of the pressure sensor 10 and the temperature sensor 9 on the upstream side of the pulse generator 8 to calculate the gas-liquid state and the proportion of the refrigerant, and adjusts the vibration frequency and the vibration amplitude of the pulse generator 8 according to the proportion and the distance from the pulse generator 8 to the indoor heat exchanger or the outdoor heat exchanger and the length of a heat exchange tube of the indoor heat exchanger or the outdoor heat exchanger. In this embodiment, the controller is a combination of the length of the heat exchange pipe of the indoor heat exchanger or the outdoor heat exchanger currently functioning as the evaporator and the pulsation generator 8 functioning as the evaporator according to the ratioThe distance of the indoor heat exchanger or the outdoor heat exchanger of the evaporator effect is adjusted. The utility model discloses an air conditioning system's controller finds the enthalpy value h1 that the testing result that pressure sensor and temperature sensor correspond corresponds in the pressure enthalpy diagram to find enthalpy value h and the vaporization latent heat r that evaporation temperature corresponds under corresponding saturated condition according to evaporation temperature, and through the formula
And calculating to obtain the proportion of the gaseous refrigerant in the unit mass of the refrigerant steam. Different proportions, corresponding distances between the pulse generator 8 and the evaporator and the length of the heat exchange tube of the evaporator are verified and calculated in advance through experiments to obtain the optimal amplitude and vibration frequency of the pulse generator 8, the optimal amplitude and vibration frequency are stored in a corresponding database or a corresponding memory, and after the controller calculates the proportions, the existing result data can be searched in combination with the distances and the lengths to quickly obtain the amplitude and the vibration frequency which need to be adjusted.
In this embodiment, the heat exchange tubes in the indoor heat exchanger and/or the outdoor heat exchanger are corrugated tubes, and the indoor heat exchanger and/or the outdoor heat exchanger are fin-type heat exchangers. When the corrugated pipe is adopted as a heat exchange pipe of the heat exchanger with the evaporator effect, the low-temperature low-pressure liquid refrigerant with a pulsating flow state exchanges heat through the corrugated pipe evaporator, at the moment, the heat exchange effect is enhanced due to the pulsating flow, the heat exchange area is increased by the corrugated pipe, the evaporation process can be rapidly finished, and the evaporated refrigerant becomes low-temperature low-pressure gas and then returns to the compressor to finish a cycle. Of course, if the corrugated pipe is not adopted, the evaporation performance can be greatly improved compared with the prior art only by adopting the pulse generator.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (11)
1. An air conditioning system comprises an indoor heat exchanger and an outdoor heat exchanger, and is characterized in that a pulsation generator is arranged on a pipeline between the indoor heat exchanger and the outdoor heat exchanger, and the pulsation generator generates pulsation to a refrigerant which is about to flow into the indoor heat exchanger or the outdoor heat exchanger to strengthen the evaporation heat exchange effect of the indoor heat exchanger or the outdoor heat exchanger.
2. The air conditioning system as claimed in claim 1, further comprising a temperature sensor and a pressure sensor provided at an upstream side of the pulsation generator in a refrigerant flow direction, wherein the controller of the air conditioning system controls an amplitude and a vibration frequency of the pulsation generator based on detection results of the temperature sensor and the pressure sensor at the upstream side of the pulsation generator.
3. The air conditioning system as claimed in claim 2, wherein the controller receives the detection results of the pressure sensor and the temperature sensor to calculate a gas-liquid state and a ratio of the refrigerant, and adjusts the vibration frequency and amplitude of the pulsation generator according to the ratio in combination with a distance from the pulsation generator to the indoor heat exchanger or the outdoor heat exchanger and a length of a heat exchange pipe of the indoor heat exchanger or the outdoor heat exchanger.
4. The air conditioning system as claimed in claim 3, wherein said controller finds an enthalpy h1 corresponding to said detection result in a pressure-enthalpy diagram, finds an enthalpy h corresponding to a saturation state and a latent heat of vaporization r corresponding to said evaporation temperature according to the evaporation temperature, and uses the formula
And calculating to obtain the proportion of the gaseous refrigerant in the unit mass of the refrigerant steam.
5. The air conditioning system as claimed in claim 2, wherein the vibration frequency of the pulsation generator is in a range of 0.5-2 Hz.
6. The air conditioning system as claimed in claim 2, wherein when the air conditioning system is a heat pump air conditioning system, a set of temperature sensor and pressure sensor are respectively provided on the pipes on both sides of the pulsation generator.
7. The air conditioning system as claimed in claim 6, wherein a throttling means is provided on each of the pipes on both sides of the pulsation generator, the throttling means opening a throttling effect when it is positioned on an upstream side of the pulsation generator in a refrigerant flow direction, and each of the sets of the temperature sensor and the pressure sensor is positioned between the pulsation generator and the throttling means.
8. The air conditioning system as claimed in claim 6, wherein a solenoid valve is provided on a pipe connecting the indoor heat exchanger to an outlet of a four-way valve of the air conditioning system, both ends of the solenoid valve are connected in parallel with a branch, and a liquid storage tank and a solenoid valve are connected in series on the branch.
9. The air conditioning system as claimed in claim 6, wherein a solenoid valve is provided on a pipe connecting the outdoor heat exchanger to an outlet of a four-way valve of the air conditioning system, both ends of the solenoid valve are connected in parallel with a branch, and a liquid storage tank and a solenoid valve are connected in series on the branch.
10. The air conditioning system as claimed in claim 1, wherein the heat exchange pipe in the indoor heat exchanger and/or the outdoor heat exchanger is bellows.
11. The air conditioning system as claimed in claim 1, wherein the indoor heat exchanger and/or the outdoor heat exchanger employs a fin type heat exchanger.
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| CN201921671201.9U CN210625025U (en) | 2019-10-08 | 2019-10-08 | Air conditioning system capable of enhancing evaporation heat exchange effect |
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| CN201921671201.9U CN210625025U (en) | 2019-10-08 | 2019-10-08 | Air conditioning system capable of enhancing evaporation heat exchange effect |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671842A (en) * | 2019-10-08 | 2020-01-10 | 珠海格力电器股份有限公司 | Air conditioning system capable of enhancing evaporation heat exchange effect |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671842A (en) * | 2019-10-08 | 2020-01-10 | 珠海格力电器股份有限公司 | Air conditioning system capable of enhancing evaporation heat exchange effect |
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