CN215951817U - Heat pump system with air-supplementing and enthalpy-increasing functions - Google Patents
Heat pump system with air-supplementing and enthalpy-increasing functions Download PDFInfo
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- CN215951817U CN215951817U CN202122487132.XU CN202122487132U CN215951817U CN 215951817 U CN215951817 U CN 215951817U CN 202122487132 U CN202122487132 U CN 202122487132U CN 215951817 U CN215951817 U CN 215951817U
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Abstract
The utility model provides a heat pump system with a gas and enthalpy adding function, which can be started in a refrigerating and heating mode through two combined one-way pipelines, has a simple integral structure and high reliability, and comprises a compressor, a first heat exchanger, a second heat exchanger and a four-way valve, wherein the four-way valve comprises a port 1, a port 2, a port 3 and a port 4, the compressor comprises an exhaust port, a return air port and an air supplementing port, and the exhaust port of the compressor is connected with the port 1; the heat exchanger further comprises an economizer, wherein the economizer comprises a first heat exchange channel and a second heat exchange channel, and heat exchange can be carried out between the first heat exchange channel and the second heat exchange channel.
Description
Technical Field
The utility model belongs to a heat pump system, and particularly relates to a heat pump system with a gas supplementing and enthalpy increasing function.
Background
The existing air-supplementing enthalpy-increasing heat pump water heater and air conditioning system use an air-supplementing enthalpy-increasing technology to increase ultra-high temperature refrigerating capacity and ultra-low temperature heating capacity, and can enlarge the operation range of the unit, and part of manufacturers use flash evaporators to achieve the purpose of starting air supplementation for both refrigeration and heating, but the flash evaporators cannot actively adjust the air supplementation amount, cannot ensure the superheat degree of air supplementation, can ensure that the superheat degree plate economizer scheme can only start the air-supplementing enthalpy-increasing function in a single heating (or refrigeration) mode, and part of the two modes can realize the air-supplementing enthalpy-increasing scheme, so that the control logic is complex and the cost is higher.
For example, patent CN106765617A discloses a heat pump air conditioner, in which, in the heating mode, the first and second heat exchangers ensure that the refrigerant entering the evaporator is supercooled, while the refrigerant entering the air make-up is superheated, but this can only be achieved in the heating mode, and the cooling mode cannot be achieved; patent CN205102289U discloses an tonifying qi increases enthalpy technique, it is parallelly connected through three electronic expansion valve, promote super high temperature refrigeration and ultra-low temperature heating effect, but this system is when refrigerating, the refrigerant is through twice throttle to still need there be the heat transfer difference in temperature between first and second time throttle, it is lower to lead to the refrigerant temperature and the pressure that are used for the tonifying qi after the secondary throttle, the tonifying qi volume can not guarantee, but the structure is complicated relatively with high costs, this scheme lacks economic nature and verifies.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a heat pump system with the functions of air supply and enthalpy increase, which can be started in a refrigerating and heating mode through two combined one-way pipelines, and has the advantages of simple integral structure and high reliability.
The utility model is realized by the following technical scheme:
a heat pump system with a gas and enthalpy supplementing function comprises a compressor, a first heat exchanger, a second heat exchanger and a four-way valve, wherein the four-way valve comprises a port 1, a port 2, a port 3 and a port 4, the compressor comprises an exhaust port, an air return port and an air supplementing port, and the exhaust port of the compressor is connected with the port 1; the heat exchanger also comprises an economizer, the economizer comprises a first heat exchange channel and a second heat exchange channel, heat exchange can be carried out between the first heat exchange channel and the second heat exchange channel,
the No. 2 port is connected with an inlet of the first heat exchanger, and an outlet of the first heat exchanger is communicated with an inlet of the first heat exchange channel in a one-way mode through a first pipeline;
the outlet of the first heat exchange channel is connected with two transition pipelines in parallel, one transition pipeline is connected with the inlet of the second heat exchange channel, and the outlet of the second heat exchange channel is connected with the air supplementing port; the other transition pipeline is connected with a second pipeline and a third pipeline in parallel, the outlet of the second pipeline is connected to the outlet of the first heat exchanger in parallel in a one-way mode, and the outlet of the third pipeline is communicated with the inlet of the second heat exchanger in a one-way mode; the inlet of the second heat exchanger is connected in parallel with the inlet of the first heat exchange channel in a unidirectional mode;
and the outlet of the second heat exchanger is connected with the air return port.
Furthermore, a first one-way valve is arranged on the first pipeline, a second one-way valve is arranged on the second pipeline, and a third one-way valve is arranged on the third pipeline; and the inlet of the second heat exchanger is connected with a fourth pipeline in parallel, the outlet of the fourth pipeline is communicated with the inlet of the first heat exchange channel in a one-way mode, and a fourth one-way valve is arranged on the fourth pipeline.
Furthermore, expansion valves are arranged on the two transition pipelines, and a filter is arranged on the first pipeline.
And the No. 3 port is connected with an inlet of the gas-liquid separator, an inlet of the gas-liquid separator is connected with the air return port, and an outlet of the second heat exchanger is connected with the No. 4 port.
Compared with the prior art, the utility model has the following beneficial effects:
1. the first pipeline, the second pipeline, the third pipeline and the fourth pipeline are all one-way pipelines, so that the refrigerant flows in a single direction, and the air and enthalpy adding functions can be started in a refrigerating and heating mode by combining the first pipeline, the second pipeline, the third pipeline and the fourth pipeline in pairs;
the first heat exchange channel and the second heat exchange channel can exchange heat, and can heat the refrigerant entering the air supplement port, so that the air supplement amount and the air supplement pressure are ensured;
2. the utility model has the advantages of simple structure and high reliability through unidirectional flow without special control logic.
Drawings
FIG. 1 is a schematic diagram of a heat pump system with air-supplying and enthalpy-increasing functions according to the present invention;
FIG. 2 is a heating mode cycle diagram of the heat pump system with air-supplementing and enthalpy-increasing functions according to the present invention;
FIG. 3 is a cycle diagram of the heat pump system with the vapor-supplementing and enthalpy-increasing functions in the refrigeration mode according to the present invention;
in the figure: 1. the heat exchanger comprises a compressor, 11, an exhaust port, 12, a return air port, 13, an air supplementing port, 2, a first heat exchanger, 3, a second heat exchanger, 4, an economizer, 41, a first heat exchange channel, 42, a second heat exchange channel, 5, a gas-liquid separator, 6, a four-way valve, 7, a first pipeline, 8, a second pipeline, 9, a third pipeline, 10 and a fourth pipeline.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
The embodiment discloses a heat pump system with a gas supplementing and enthalpy increasing function, which comprises a compressor 1, a first heat exchanger 2, a second heat exchanger 3, an economizer 4, a gas-liquid separator 5 and a four-way valve 6, as shown in fig. 1. The four-way valve 6 comprises a port 1, a port 2, a port 3 and a port 4, the four-way valve 6 is controlled by electricity, and switching of connection of the port 1 and the port 2, connection of the port 3 and the port 4 to the port 1 and the port 4, and connection of the port 3 and the port 2 can be realized. The shell wall of the compressor 1 is provided with an exhaust port 11, a return air port 12 and a supplementary air port 13, the economizer 4 comprises a first heat exchange channel 41 and a second heat exchange channel 42, the first heat exchange channel 41 and the second heat exchange channel 42 are distributed side by side and can exchange heat with each other, the structure principle of the economizer is the same as that of a conventional plate heat exchanger, and the economizer is not described in detail herein.
The exhaust port 11 of the compressor 1 is communicated with the port 1 of the four-way valve 6 through a refrigerant pipeline (mostly a copper pipe), the port 2 of the four-way valve 6 is communicated with the inlet of the first heat exchanger 2 through a pipeline, the outlet of the first heat exchanger 2 is communicated with the inlet of the first heat exchange channel 41 through the first pipeline 7, and a first one-way valve is arranged on the first pipeline 7, so that the refrigerant in the first pipeline 7 can only flow into the first heat exchange channel 41 in one direction, two transition pipelines are connected in parallel from the outlet of the first heat exchange channel 41, one of the transition pipelines is connected with the inlet of the second heat exchange channel 42, and an auxiliary expansion valve is installed on the transition pipeline, and the outlet of the second heat exchange channel 42 is communicated with the air supplementing port 13 through the refrigerant pipeline. The other transition pipeline is connected with a second pipeline 8 and a third pipeline 9 in parallel, a main expansion valve and a filter are arranged on the transition pipeline, an outlet of the second pipeline 8 is connected to an outlet of the first heat exchanger 2 in parallel, and a second one-way valve is arranged on the second pipeline 8 to ensure that the refrigerant in the second pipeline 8 can only flow into the first heat exchanger 2 in one way. An outlet of the third pipeline 9 is communicated with an inlet of the second heat exchanger 3 through a pipeline, and a third one-way valve is arranged on the third pipeline 9, so that the refrigerant in the third pipeline 9 can only flow into the second heat exchanger 3 in one way. The inlet of the second heat exchanger 3 is connected in parallel with a fourth pipeline 10, the outlet of the fourth pipeline 10 is connected in parallel with the inlet of the first heat exchange channel 41, and the fourth pipeline 10 is provided with a fourth one-way valve, so that cold in the fourth pipeline 10 can only flow into the inlet of the first heat exchange channel 41 in one way.
The outlet of the second heat exchanger 3 is connected with the port 4 of the four-way valve 6 through a pipeline, the port 3 of the four-way valve 6 is connected with the inlet of the gas-liquid separator 5 through a pipeline, and the inlet of the gas-liquid separator 5 is connected with the return air port 12 through a pipeline.
In the present embodiment, a receiver is installed in the circulation system to store the excessive refrigerant, and the receiver is usually installed at the outlet of the first heat exchanger 2. In order to filter impurities, a filter is provided on the first pipe 7.
The heat pump system with the functions of air supply and enthalpy increase has the following specific working process:
1. in the heating mode, as shown in fig. 2, the port 1 in the four-way valve 6 is connected to the port 2, and the port 3 is connected to the port 4. High-temperature and high-pressure refrigerant flows out of an exhaust port 11 of the compressor 1, passes through the four-way valve 6 (at the moment, the refrigerant in the four-way valve 6 flows from a port 1 to a port 2), enters the first heat exchanger 2 to release heat (the form of the first heat exchanger 2 comprises but is not limited to a fin heat exchanger and a sleeve heat exchanger, heat exchange media comprise but is not limited to refrigerant and water, and refrigerant and air), and then enters the liquid storage device, the outlet of the liquid storage device is simultaneously communicated with the second pipeline 8 and the first pipeline 7, because of downstream flow of the first check valve, the refrigerant can pass through the first pipeline 7, and the second check valve is countercurrent, and the refrigerant can not pass through the second pipeline 8. The refrigerant flows to the economizer 4 after being filtered by the filter of the first pipeline 7, and because the first pipeline 7 and the fourth pipeline 10 are connected in parallel at the inlet of the first heat exchange channel 41, the fourth one-way valve is in counter flow, the refrigerant cannot pass through the fourth pipeline 10, and the refrigerant can only enter the first heat exchange channel 41;
the refrigerant is divided into two paths after passing through the first heat exchange channel 41, the first path of refrigerant enters the auxiliary expansion valve, the second path of refrigerant enters the main expansion valve, the first path of refrigerant is throttled by the auxiliary expansion valve and then enters the air supplement port of the compressor 1 through the second heat exchange channel 42, and during the period, the low-temperature and low-pressure refrigerant in the second heat exchange channel 42 can exchange heat with the medium-high-temperature and high-pressure refrigerant in the first heat exchange channel 41, so that the temperature of the refrigerant in the first heat exchange channel 41 is increased, and the air supplement and overheating are ensured;
a second path of refrigerant passes through the filter after being throttled by the main expansion valve and then is divided into two paths, wherein one path of refrigerant enters the third pipeline 9, the other path of refrigerant enters the second pipeline 8, although a second one-way valve on the second pipeline 8 is in a downstream state, an outlet of the second one-way valve is communicated with a high-pressure refrigerant of the liquid storage tank, and under the action of a high-pressure reverse refrigerant, the second one-way valve is in a locked state, so that the refrigerant cannot pass through the second pipeline 8;
the refrigerant entering the third pipeline 9 is divided into two paths after passing through the third one-way valve, one path enters the second heat exchanger 3 to absorb heat, the other path enters the fourth pipeline 10, although the fourth one-way valve on the fourth pipeline 10 is in a downstream state, the outlet of the fourth one-way valve is communicated to the high-pressure refrigerant in the first pipeline 7, and under the action of the high-pressure reverse refrigerant, the fourth one-way valve is in a locked state, so that the refrigerant cannot pass through the fourth pipeline 10;
after absorbing heat in the second heat exchanger 3, the refrigerant enters the gas-liquid separator 5 through the four-way valve 6 (at this time, the refrigerant in the four-way valve 6 flows from the port 4 to the port 3), and finally enters the return air port 12 of the compressor 1;
to this end, the system completes a heating cycle.
2. In the cooling mode, as shown in fig. 3, the port No. 1 and the port No. 4 in the four-way valve 6 are connected, and the port No. 3 and the port No. 2 are connected. The high-temperature and high-pressure refrigerant flows out of an exhaust port 11 of a compressor 1 of the compressor 1, passes through a four-way valve 6 (at the moment, the refrigerant in the four-way valve 6 flows from a port 1 to a port 4), is divided into two paths after being released by a heat exchanger of a second heat exchanger 3 (a fan can be added beside the second heat exchanger 3 to provide forced convection and enhance the heat exchange effect), and one path of refrigerant enters a third pipeline 9, but a third one-way valve is in a counter-flow state, so that the refrigerant cannot pass through the third pipeline 9;
the other path of refrigerant enters a fourth one-way valve of a fourth pipeline 10 and then is divided into two paths, one path of refrigerant enters the first pipeline 7, the refrigerant cannot pass through the first pipeline 7 because the first one-way valve is in a counter-flow state, and the other path of refrigerant enters a first heat exchange channel 41 of the economizer 4;
the refrigerant is divided into two paths after passing through the first heat exchange channel 41, the first path of refrigerant enters the auxiliary expansion valve, the second path of refrigerant enters the main expansion valve, the first path of refrigerant is throttled by the auxiliary expansion valve and then enters the air supplement port of the compressor 1 through the second heat exchange channel 42, and during the period, the low-temperature and low-pressure refrigerant in the second heat exchange channel 42 can exchange heat with the medium-high-temperature and high-pressure refrigerant in the first heat exchange channel 41, so that the temperature of the refrigerant in the first heat exchange channel 41 is increased, and the air supplement and overheating are ensured;
the second path of refrigerant passes through the filter after being throttled by the main expansion valve and then is divided into two paths, one path of refrigerant enters the third pipeline 9, but the outlet of the third one-way valve is high-pressure refrigerant, and the third one-way valve is in a locked state under the action of the high-pressure refrigerant, so that the refrigerant cannot pass through the third pipeline 9; the other path of refrigerant enters a second pipeline 8 and is divided into two paths after passing through a second one-way valve, one path of refrigerant enters a first pipeline 7, but the outlet of the first one-way valve is high-pressure refrigerant, so that the first one-way valve is in a locked state and cannot pass through the first pipeline 7, the other path of refrigerant directly enters a first heat exchanger 2 for heat absorption after entering a liquid storage tank, then enters a gas-liquid separator 5 after passing through a four-way valve 6 (at the moment, the refrigerant in the four-way valve 6 flows from a No. 2 port to a No. 3 port), and finally enters a return air port 12 of the compressor 1;
to this end, the system completes a refrigeration cycle.
In summary, the first pipeline, the second pipeline, the third pipeline and the fourth pipeline of the utility model are all one-way pipelines, so that the refrigerant flows in a single direction, and the gas and enthalpy adding functions can be started under the refrigeration and heating mode by combining two pipelines; the first heat exchange channel and the second heat exchange channel can exchange heat, a refrigerant entering the air supplementing port can be heated, the air supplementing amount and the air supplementing pressure are guaranteed, and the whole structure is simple.
Claims (4)
1. A heat pump system with a gas and enthalpy supplementing function comprises a compressor, a first heat exchanger, a second heat exchanger and a four-way valve, wherein the four-way valve comprises a port 1, a port 2, a port 3 and a port 4, the compressor comprises an exhaust port, an air return port and an air supplementing port, and the exhaust port of the compressor is connected with the port 1;
it is characterized by also comprising an economizer, wherein the economizer comprises a first heat exchange channel and a second heat exchange channel, heat exchange can be carried out between the first heat exchange channel and the second heat exchange channel,
the No. 2 port is connected with an inlet of the first heat exchanger, and an outlet of the first heat exchanger is communicated with an inlet of the first heat exchange channel in a one-way mode through a first pipeline;
the outlet of the first heat exchange channel is connected with two transition pipelines in parallel, one transition pipeline is connected with the inlet of the second heat exchange channel, and the outlet of the second heat exchange channel is connected with the air supplementing port; the other transition pipeline is connected with a second pipeline and a third pipeline in parallel, the outlet of the second pipeline is connected to the outlet of the first heat exchanger in parallel in a one-way mode, and the outlet of the third pipeline is communicated with the inlet of the second heat exchanger in a one-way mode; the inlet of the second heat exchanger is connected in parallel with the inlet of the first heat exchange channel in a unidirectional mode;
and the outlet of the second heat exchanger is connected with the air return port.
2. The heat pump system according to claim 1, wherein a first check valve is disposed on the first pipeline, a second check valve is disposed on the second pipeline, and a third check valve is disposed on the third pipeline; and the inlet of the second heat exchanger is connected with a fourth pipeline in parallel, the outlet of the fourth pipeline is communicated with the inlet of the first heat exchange channel in a one-way mode, and a fourth one-way valve is arranged on the fourth pipeline.
3. The heat pump system of claim 2, wherein an expansion valve is disposed on each of the two transition conduits, and a filter is disposed on the first conduit.
4. The heat pump system according to any one of claims 1-3, further comprising a gas-liquid separator, wherein the port No. 3 is connected to an inlet of the gas-liquid separator, an inlet of the gas-liquid separator is connected to the return air port, and an outlet of the second heat exchanger is connected to the port No. 4.
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| CN202122487132.XU CN215951817U (en) | 2021-10-15 | 2021-10-15 | Heat pump system with air-supplementing and enthalpy-increasing functions |
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| CN202122487132.XU CN215951817U (en) | 2021-10-15 | 2021-10-15 | Heat pump system with air-supplementing and enthalpy-increasing functions |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114992910A (en) * | 2022-05-26 | 2022-09-02 | 浙江中广电器集团股份有限公司 | Three-stage compressed air source heat pump unit adopting flash tank and economizer |
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2021
- 2021-10-15 CN CN202122487132.XU patent/CN215951817U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114992910A (en) * | 2022-05-26 | 2022-09-02 | 浙江中广电器集团股份有限公司 | Three-stage compressed air source heat pump unit adopting flash tank and economizer |
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