CN215892583U - Multi-connected indoor unit dehumidification and reheating system utilizing condensate water supercooling - Google Patents
Multi-connected indoor unit dehumidification and reheating system utilizing condensate water supercooling Download PDFInfo
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- CN215892583U CN215892583U CN202122409913.7U CN202122409913U CN215892583U CN 215892583 U CN215892583 U CN 215892583U CN 202122409913 U CN202122409913 U CN 202122409913U CN 215892583 U CN215892583 U CN 215892583U
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Abstract
The utility model relates to a multi-connected indoor unit dehumidification and reheating system using condensed water for supercooling, which comprises an outdoor unit and an indoor unit, wherein the outdoor unit comprises a refrigerant pipeline consisting of a compressor, an oil separator, a four-way valve, an outdoor heat exchanger and a gas-liquid separator; the pipeline is connected with the indoor unit through a liquid pipe and an air pipe respectively; the indoor units comprise a first indoor unit and/or a second indoor unit; the first indoor unit is a dehumidification and reheating indoor unit and comprises a first supercooling coil, a reheating coil and a first dehumidification coil; the second indoor unit is a common indoor unit and comprises a second supercooling coil pipe and a second dehumidification coil pipe; the first supercooling coil pipe and the second supercooling coil pipe are arranged in the condensed water receiving disc, and the supercooling degree of refrigerants of different internal machines in the system before throttling is improved by using the cold quantity of the condensed water, so that the throttling noise can be reduced, and the running energy efficiency of the unit is improved.
Description
Technical Field
The utility model relates to an air conditioning device, in particular to an improved multi-connected dehumidification and reheating system, and specifically relates to a multi-connected indoor unit dehumidification and reheating system utilizing condensed water supercooling.
Background
At present, in a multi-split system, different internal machines are often connected at the same time, including an internal machine with a reheating function and an internal machine without the reheating function. When only part of the internal machines need more condensation heat, the condensation pressure of the external machine needs to be increased, so that other internal machines without a reheating function or without starting the reheating function can be throttled in a high-pressure two-phase state, and throttling noise and energy efficiency are easily reduced. Therefore, there is a need for improvements to existing multi-split air conditioning system to meet the comfort and refrigerant system economy requirements.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a multi-connected indoor unit dehumidification and reheating system using condensed water for supercooling, which improves the supercooling degree of refrigerants of different indoor units in the system before throttling by using the cold energy of the condensed water, thereby improving the unit operation energy efficiency and reducing the system operation noise.
The technical scheme of the utility model is as follows:
a multi-connected indoor unit dehumidification and reheating system using condensed water for supercooling comprises an outdoor unit and an indoor unit, wherein the outdoor unit comprises a refrigerant pipeline consisting of a compressor, an oil separator, a four-way valve, an outdoor heat exchanger and a gas-liquid separator; the pipeline is connected with the indoor unit through a liquid pipe and an air pipe respectively;
the indoor units comprise a first indoor unit and/or a second indoor unit; the first indoor unit comprises a first supercooling coil, a reheating coil and a first dehumidifying coil; the first end of the first supercooling coil and the first end of the reheating coil are connected in parallel and then connected with the liquid pipe; the second end of the first supercooling coil and the second end of the reheating coil are connected in parallel and then connected with the second end of the first dehumidifying coil; the first end of the first dehumidifying coil is connected with the air pipe;
the second indoor unit comprises a second supercooling coil and a second dehumidification coil; the first end of the second supercooling coil is connected with the liquid pipe, and the second end of the second supercooling coil is connected with the second end of the dehumidifying coil; the first end of the second dehumidifying coil is connected with the air pipe;
the second end of the first supercooling coil, the second end of the reheating coil and the second end of the second dehumidifying coil are respectively provided with a throttling device;
the first supercooling coil pipe and the second supercooling coil pipe are arranged in the condensate water receiving disc and can exchange heat with condensate water.
Furthermore, a throttling device is arranged at the liquid pipe end of the outdoor heat exchanger.
Furthermore, the first indoor unit and the second indoor unit are connected in parallel.
The utility model has the beneficial effects that:
the utility model has reasonable design, simple structure and convenient control, and can improve the supercooling degree of the refrigerants of different internal machines in the system before throttling by arranging the supercooling coil pipe in the condensate water and utilizing the cold energy of the condensate water, thereby reducing the throttling noise and improving the operation energy efficiency of the unit.
Drawings
Fig. 1 is a schematic diagram of the system architecture of the present invention.
Wherein, 1-compressor; 2-an oil separator; 3-a four-way valve; 4-outdoor heat exchanger; 5-outdoor electronic expansion valve; 6-a first subcooling coil; 7-a reheat coil; 8-a first dehumidifying coil; 9-a first electronic expansion valve; 10-a second electronic expansion valve; 11-a second subcooling coil; 12-a second dehumidifying coil; 13-a gas-liquid separator; 14-third electronic expansion valve.
Detailed Description
The utility model is further described below with reference to the figures and examples.
As shown in fig. 1.
A multi-connected indoor unit dehumidification and reheating system using condensed water supercooling comprises an outdoor unit and an indoor unit.
The outdoor unit includes a refrigerant line composed of a compressor 1, an oil separator 2, a four-way valve 3, an outdoor heat exchanger 4, and a gas-liquid separator 13. The pipeline is connected with the indoor unit through a liquid pipe and an air pipe respectively. The liquid pipe end of the outdoor heat exchanger 4 is provided with an outdoor electronic expansion valve 5 which can throttle the refrigerant in the pipeline or control the on-off of the pipeline.
The indoor unit comprises a first indoor unit and a second indoor unit.
The first indoor unit is a dehumidification and reheating type indoor unit and comprises a first supercooling coil 6, a reheating coil 7 and a first dehumidification coil 8. The first end of the first subcooling coil 6 and the first end of the reheating coil 7 are connected in parallel and then connected to the liquid pipe. The second end of the first subcooling coil 6 and the second end of the reheating coil 7 are connected in parallel and then connected to the second end of the first dehumidifying coil 8. The first end of the first dehumidifying coil 6 is connected to the air pipe. The second end of the first supercooling coil 6 is provided with a first electronic expansion valve 9, and the second end of the reheating coil 7 is provided with a second electronic expansion valve 10, so that the throttling function can be realized respectively, or the on-off of a pipeline can be controlled.
The second indoor unit is a common indoor unit and comprises a second supercooling coil 11 and a second dehumidifying coil 12. The first end of the second subcooling coil 11 is connected to the liquid pipe, and the second end thereof is connected to the second end of the dehumidifying coil 12. The first end of the second dehumidifying coil 12 is connected to the air pipe. The second end of the second dehumidification coil 12 is provided with a third electronic expansion valve 14 to realize the throttling function or control the on-off of the pipeline.
The first supercooling coil 6 and the second supercooling coil 11 are respectively arranged in the condensed water receiving tray, heat exchange can be carried out between the first supercooling coil and the condensed water, and the supercooling degree of the refrigerant before throttling is improved by using the cold energy of the condensed water.
The first indoor unit and the second indoor unit are connected in parallel, so that the indoor units can be used in multiple occasions. In this embodiment, two first indoor units and one second indoor unit are connected in parallel.
The first indoor unit and the second indoor unit can be an air duct machine, a ceiling machine, a wall-mounted machine, a cabinet machine, a fresh air machine and the like respectively, can be adaptively designed according to the structures of different machine types, and the supercooling coil pipe is arranged in the condensate water disc.
The first indoor unit has the operation modes of cooling, reheating, heating, defrosting and the like. The operation modes of the second indoor unit comprise refrigeration, heating and defrosting, and the specific process is as follows:
1. the first indoor unit operates alone.
1.1) a refrigeration mode, wherein at the moment, an outdoor electronic expansion valve is opened and does not play a throttling role; the first electronic expansion valve is opened and plays a role in throttling; the second electronic expansion valve is closed. The refrigerant is discharged by the compressor, flows to the outdoor heat exchanger through the four-way valve, flows into the liquid pipe after passing through the outdoor electronic expansion valve, is supercooled by condensed water through the first supercooling coil pipe, flows into the first dehumidification coil pipe after being throttled by the first electronic expansion valve, and cools the indoor air through evaporation and heat absorption. Then, the refrigerant flows into the air pipe, flows through the four-way valve and the gas-liquid separator and then flows back to the compressor, and primary circulation is completed. Under this mode, indoor air-out temperature is lower, and sensible heat accounts for than great.
1.2) a dehumidification reheating mode, wherein the outdoor electronic expansion valve is opened and does not play a throttling role; the first electronic expansion valve and the second electronic expansion valve are both opened and play a throttling role. The refrigerant is discharged by the compressor, flows to outdoor heat exchanger behind the cross valve, then, flows into the liquid pipe through outdoor electronic expansion valve, and the subdivision is two the tunnel, flows through first subcooling coil pipe and reheat coil pipe respectively, realizes the subcooling to the refrigerant through first condensing coil pipe to it is exothermic to carry out the condensation through reheat coil pipe, carries out the reheat to the air that flows through. Then, the two paths of refrigerants respectively flow into the first dehumidification coil pipe to evaporate and absorb heat after being throttled in parallel by the first electronic expansion valve and the second electronic expansion valve, and the air is cooled and dehumidified. And finally, the refrigerant flows back to the compressor after sequentially passing through the four-way valve and the gas-liquid separator through the gas pipe, and primary circulation is completed. In this mode, the outlet air temperature is high, and the latent heat accounts for a relatively large amount.
1.3) a heating mode, wherein at the moment, an outdoor electronic expansion valve is opened to play a throttling role; the first electronic expansion valve and the second electronic expansion valve are both opened, but do not play a throttling role. The refrigerant is discharged by the compressor, flows to the air pipe through the four-way valve, then passes through the first dehumidification coil pipe, then respectively passes through the first electronic expansion valve and the second electronic expansion valve, and then respectively enters the first supercooling coil pipe and the reheating coil pipe to be condensed and heated, so that the temperature of the indoor air is raised. And then, the refrigerant is converged into the liquid inlet pipe and then flows back to the outdoor unit, throttled by the outdoor electronic expansion valve and flows into an outdoor heat exchanger to be evaporated and absorb heat. And finally, the mixture flows back to the compressor after passing through the four-way valve and the gas-liquid separator, and primary circulation is completed.
2. The second indoor unit operates alone.
2.1) a refrigeration mode, wherein at the moment, the outdoor electronic expansion valve is opened and does not play a throttling role; the third electronic expansion valve is opened and plays a role of throttling. The refrigerant is discharged by the compressor, flows to the outdoor heat exchanger through the four-way valve, flows into the liquid pipe after passing through the outdoor electronic expansion valve, then passes through the second supercooling coil, is supercooled by condensed water, then flows into the second dehumidification coil after being throttled by the third electronic expansion valve, and cools the indoor air through evaporation and heat absorption. Then, the refrigerant flows into the air pipe, flows through the four-way valve and the gas-liquid separator and then flows back to the compressor, and primary circulation is completed.
2.2) a heating mode, wherein at the moment, the outdoor electronic expansion valve is opened to play a throttling role; the third electronic expansion valve is open, but does not throttle. The refrigerant is discharged by the compressor, flows to the trachea through the four-way valve, then flows into the second dehumidification coil pipe to carry out condensation and heat release, and heats up the air. Then, the refrigerant enters a second supercooling coil pipe after passing through a third electronic expansion valve, and the refrigerant is refrigerated by utilizing the condensed water. Then, the refrigerant flows back to the outdoor unit through the liquid pipe, throttles by the outdoor electronic expansion valve, and flows into the outdoor heat exchanger for evaporation and heat absorption. And finally, the mixture flows back to the compressor after passing through the four-way valve and the gas-liquid separator, and primary circulation is completed.
3. The first indoor unit and the second indoor unit operate simultaneously.
And 3.1) carrying out reheating operation on the first indoor unit and carrying out cooling operation on the second indoor unit, wherein the outdoor electronic expansion valve is opened but does not play a throttling role. The first electronic expansion valve, the second electronic expansion valve and the third electronic expansion valve are all opened and play a role in throttling. The refrigerant is discharged by the compressor, flows to the outdoor heat exchanger after passing through the four-way valve, flows into the liquid pipe after passing through the outdoor electronic expansion valve, is divided into two paths, and flows into the first indoor unit and the second indoor unit respectively. The refrigerant that gets into first indoor set flows through first subcooling coil pipe and reheat coil pipe respectively to realize the subcooling to the refrigerant in first condensation coil pipe, and carry out the condensation through reheat coil pipe and release heat, carry out the reheat to the air that flows through. Then, the two paths of refrigerants respectively flow into the first dehumidification coil pipe to evaporate and absorb heat after being throttled in parallel by the first electronic expansion valve and the second electronic expansion valve, and the air is cooled and dehumidified. And then flows out of the first indoor unit. The refrigerant entering the second indoor unit firstly passes through the second supercooling coil, is supercooled by utilizing condensed water, then flows into the second dehumidification coil after being throttled by the third electronic expansion valve, and cools the indoor air through evaporation and heat absorption. And then, the refrigerant flows out of the second indoor unit, is converged with the refrigerant from the first indoor unit, flows back to the outdoor unit through the air pipe, sequentially passes through the four-way valve and the gas-liquid separator, and flows back to the compressor, so that one cycle is completed. During, when first indoor set was operated at low temperature high humidity operating mode, like yellow plum weather, if the heat capacity is not enough, usable outer quick-witted condensation heat, with outer quick-witted fan deceleration. At the moment, the pressure of the refrigerant is increased, the dryness is increased, the residual condensation heat of the refrigerant is condensed in the first supercooling coil and the reheating coil, and the reheating quantity is increased. However, at this time, the high-pressure two-phase refrigerant also enters the second indoor unit. If the throttling is directly performed, the throttling noise is easily generated, and the efficiency of the unit is reduced. In the utility model, the high-pressure two-phase refrigerant passes through the second supercooling coil pipe firstly, and can be cooled to a supercooling state under the action of condensed water. Then, when the air enters the throttling, the throttling noise can be effectively reduced, and the problem of energy efficiency reduction is solved.
The parts not involved in the present invention are the same as or can be implemented using the prior art.
Claims (3)
1. A multi-connected indoor unit dehumidification and reheating system using condensed water for supercooling comprises an outdoor unit and an indoor unit, and is characterized in that the outdoor unit comprises a refrigerant pipeline consisting of a compressor, an oil separator, a four-way valve, an outdoor heat exchanger and a gas-liquid separator; the pipeline is connected with the indoor unit through a liquid pipe and an air pipe respectively;
the indoor units comprise a first indoor unit and/or a second indoor unit; the first indoor unit comprises a first supercooling coil, a reheating coil and a first dehumidifying coil; the first end of the first supercooling coil and the first end of the reheating coil are connected in parallel and then connected with the liquid pipe; the second end of the first supercooling coil and the second end of the reheating coil are connected in parallel and then connected with the second end of the first dehumidifying coil; the first end of the first dehumidifying coil is connected with the air pipe;
the second indoor unit comprises a second supercooling coil and a second dehumidification coil; the first end of the second supercooling coil is connected with the liquid pipe, and the second end of the second supercooling coil is connected with the second end of the dehumidifying coil; the first end of the second dehumidifying coil is connected with the air pipe;
the second end of the first supercooling coil, the second end of the reheating coil and the second end of the second dehumidifying coil are respectively provided with a throttling device;
the first supercooling coil pipe and the second supercooling coil pipe are arranged in the condensate water receiving disc and can exchange heat with condensate water.
2. The multi-connected indoor unit dehumidification and reheating system using condensed water supercooling according to claim 1, wherein a throttling device is arranged at a liquid pipe end of the outdoor heat exchanger.
3. The multi-connected indoor unit dehumidification and reheating system using condensed water supercooling according to claim 1, wherein the first indoor unit and the second indoor unit are connected in parallel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122409913.7U CN215892583U (en) | 2021-10-08 | 2021-10-08 | Multi-connected indoor unit dehumidification and reheating system utilizing condensate water supercooling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122409913.7U CN215892583U (en) | 2021-10-08 | 2021-10-08 | Multi-connected indoor unit dehumidification and reheating system utilizing condensate water supercooling |
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| Publication Number | Publication Date |
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| CN215892583U true CN215892583U (en) | 2022-02-22 |
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| CN202122409913.7U Active CN215892583U (en) | 2021-10-08 | 2021-10-08 | Multi-connected indoor unit dehumidification and reheating system utilizing condensate water supercooling |
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| CN (1) | CN215892583U (en) |
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2021
- 2021-10-08 CN CN202122409913.7U patent/CN215892583U/en active Active
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