CN211977301U - Air conditioning system with function of defrosting without stopping machine - Google Patents
Air conditioning system with function of defrosting without stopping machine Download PDFInfo
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- CN211977301U CN211977301U CN201922234130.2U CN201922234130U CN211977301U CN 211977301 U CN211977301 U CN 211977301U CN 201922234130 U CN201922234130 U CN 201922234130U CN 211977301 U CN211977301 U CN 211977301U
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Abstract
The utility model discloses an air conditioning system with function of defrosting without shutdown, including outdoor heat exchanger, cross valve, compressor, indoor heat exchanger and the throttling arrangement that interconnect and form refrigerant circulation circuit, be provided with electromagnetic heater on the liquid refrigerant pipeline between outdoor heat exchanger and the indoor heat exchanger, wherein, electromagnetic heater is configured to heat the refrigerant that flows into outdoor heat exchanger when air conditioning system is under the defrosting mode; by the aid of the defrosting method, defrosting is achieved without stopping, defrosting efficiency is improved, indoor temperature can be kept unaffected in the defrosting process, and comfort of indoor environment is effectively guaranteed in defrosting; meanwhile, the electromagnetic heater heats the refrigerant based on the electromagnetic induction heating principle, and compared with the phase change heat storage technology and the PTC electric heating technology, the electromagnetic heater has the characteristics of rapid reaction, less heat transfer loss, high heating efficiency and long service life.
Description
Technical Field
The utility model belongs to the technical field of air conditioning system technique and specifically relates to an air conditioning system with do not shut down machine frost function is related to.
Background
The existing air conditioning system has serious frosting of the outdoor heat exchanger when running in a low-temperature environment, and the frosting can cause the heat transfer coefficient of the heat exchanger to be reduced, thereby weakening the heating capacity of the air conditioning system.
At present, a heat pump type air conditioning system mainly adopts a reverse circulation defrosting control method, needs to consume part of indoor heat, and reduces the thermal comfort of a room. At present, a systematic solution combining a phase change heat storage technology and a PTC electric heating technology is also proposed, and although the solution can optimize the heating capacity of an air conditioning system to a certain extent and meet the heating requirements of different indoor heat exchangers, the following problems exist: 1. after the phase-change material undergoes a plurality of cold and hot cycles, characteristic parameters of the phase-change material, such as heat storage density, heat conductivity coefficient and the like, can be changed, so that the heat storage efficiency of a heat storage system is reduced; 2. the phase-change material has a certain corrosion effect on the container, so that the heat conduction coefficient is reduced, and the service life of the phase-change material heat storage system is prolonged; 3. the PTC electric heating conducts heat to the metal tube by heating the phase-change material, so that the heat loss is large; on the other hand, the PTC electric heater heats the phase change material and the phase change material heats the metal tube for a long time, which is not fast enough.
SUMMERY OF THE UTILITY MODEL
To prior art's not enough, the utility model aims to provide a change the effectual air conditioning system who has not shutting down the machine frost function that just can provide user to use experience of frost.
In order to achieve the above purpose, the utility model provides a scheme does: the air conditioning system with the function of defrosting without stopping defrosting comprises an outdoor heat exchanger, a four-way valve, a compressor, an indoor heat exchanger and a throttling device which are connected with each other to form a refrigerant circulation loop, wherein an electromagnetic heater is arranged on a liquid refrigerant pipeline between the outdoor heat exchanger and the indoor heat exchanger, and the electromagnetic heater is configured to heat a refrigerant flowing into the outdoor heat exchanger when the air conditioning system is in a defrosting mode.
Further, the liquid refrigerant pipeline between the outdoor heat exchanger and the throttling device comprises a refrigerant circulation main path and a refrigerant heating secondary path which are connected in parallel, wherein the electromagnetic heater is connected in series on the refrigerant heating secondary path, and the refrigerant heating secondary path is configured to be conducted to heat the refrigerant flowing through the electromagnetic heater when the air conditioning system is in a defrosting mode.
Further, a first control valve and a second control valve are respectively arranged on the refrigerant circulation main path and the refrigerant heating secondary path, wherein when the air-conditioning system is in a defrosting mode, the first control valve is closed, the second control valve is opened, and when the air-conditioning system is in a non-defrosting mode, the first control valve is opened, and the second control valve is closed.
Further, the number of the second control valves is two, wherein one of the second control valves is arranged at an inlet end of the secondary refrigerant heating path, and the other second control valve is arranged at an outlet end of the secondary refrigerant heating path.
Further, the first control valve and the second control valve are both solenoid valves.
Further, the number of the indoor heat exchangers is multiple, and the indoor heat exchangers are connected in parallel.
And the defrosting control system further comprises a first temperature sensor arranged in the outdoor environment, a second temperature sensor arranged at the inlet end of the outdoor heat exchanger and a third temperature sensor arranged at the middle position of the indoor heat exchanger, wherein the temperature information respectively detected by the first temperature sensor, the second temperature sensor and the third temperature sensor is used for judging whether the air-conditioning system enters the defrosting mode or not.
Further, the electromagnetic heater comprises a magnetic conductive metal pipe, a bracket and a coil, wherein the magnetic conductive metal pipe and the coil are respectively fixed above and below the bracket, and the magnetic conductive metal pipe is connected in series on a liquid refrigerant pipeline between the outdoor heat exchanger and the indoor heat exchanger.
Further, the magnetic conductive metal tube is in a shape of a roundabout coil.
Further, the throttling device is an electronic expansion valve.
Compared with the prior art, the utility model has the advantages that, through the way, when the air conditioning system is in the defrosting mode, the low-temperature refrigerant coming out of the indoor heat exchanger is heated by the electromagnetic heater and then enters the outdoor heat exchanger for defrosting, so that the defrosting is realized without stopping the machine, the defrosting efficiency is improved, the indoor temperature can be kept unaffected in the defrosting process, and the comfort level of the indoor environment during defrosting is effectively ensured; meanwhile, the electromagnetic heater heats the refrigerant based on the electromagnetic induction heating principle, and compared with the phase change heat storage technology and the PTC electric heating technology, the electromagnetic heater has the characteristics of rapid reaction, less heat transfer loss, high heating efficiency and long service life.
Drawings
Fig. 1 is a schematic structural diagram of the air conditioning system of the present invention.
Fig. 2 is a schematic structural diagram of the electromagnetic heater of the present invention.
The system comprises an outdoor heat exchanger 1, an indoor heat exchanger 2, a throttling device 3, an electromagnetic heater 4, a magnetic conductive metal pipe 41, a bracket 42, a coil 43, a compressor 5, a refrigerant flowing main path 6, a first control valve 61, a refrigerant heating auxiliary path 7 and a second control valve 71.
Detailed Description
The invention will be further described with reference to the following specific embodiments:
referring to fig. 1 and 2, the present embodiment is an air conditioning system with a function of defrosting without stopping defrosting, including an outdoor heat exchanger 1, a four-way valve, a compressor 5, a plurality of indoor heat exchangers 2, and a throttling device 3, which are connected to each other to form a refrigerant circulation loop, wherein the plurality of indoor heat exchangers 2 are connected in parallel, and one outdoor heat exchanger 1 is used to perform heat exchange work with the plurality of indoor heat exchangers 2, so as to realize a "one-driving-many" working mode.
In this embodiment, an electromagnetic heater 4 is disposed on a liquid refrigerant pipeline between the outdoor heat exchanger 1 and the indoor heat exchanger 2, wherein the electromagnetic heater 4 is configured to heat a refrigerant flowing into the outdoor heat exchanger 1 when the air conditioning system is in a defrosting mode, and specifically, the liquid refrigerant pipeline between the outdoor heat exchanger 1 and the throttling device 3 includes a refrigerant circulation main path 6 and a refrigerant heating sub-path 7 that are connected in parallel with each other, wherein the electromagnetic heater 4 is connected in series to the refrigerant heating sub-path 7, and the refrigerant heating sub-path 7 is configured to be conducted to heat a refrigerant flowing through by the electromagnetic heater 4 when the air conditioning system is in the defrosting mode; further, a first control valve 61 is provided on the main refrigerant flow path 6, and second control valves 71 are provided at both the inlet end and the outlet end of the secondary refrigerant heating path 7, wherein when the air conditioning system is in the defrosting mode, the first control valve 61 is closed, and the two second control valves 71 are opened, so that the main refrigerant flow path 6 is closed when it is closed, and the secondary refrigerant heating path 7 is opened when it is closed, and the low-temperature refrigerant flowing out from the throttle device 3 passes through the secondary refrigerant heating path 7 to be heated and then enters the outdoor heat exchanger 1 to be defrosted, and when the air conditioning system is in the non-defrosting mode (generally, in winter, the air conditioning system is in the heating mode for a long time), the first control valve 61 is opened, and the two second control valves 71 are closed, and the low-temperature refrigerant flowing out from the throttle device 3 passes through the main refrigerant flow path 6 and then the outdoor heat exchanger 1.
In this embodiment, the electromagnetic heater 4 is composed of a magnetic conductive metal tube 41, a bracket 42 and a coil 43, wherein the magnetic conductive metal tube 41 and the coil 43 are respectively fixed above and below the bracket 42, and the magnetic conductive metal tube 41 is connected in series to a liquid refrigerant pipeline between the outdoor heat exchanger 1 and the indoor heat exchanger 2; specifically, grooves (not shown in the drawings) for the magnetic conductive metal tube 41 and the coil 43 to be clamped or penetrated are formed above and below the bracket 42 of the electromagnetic heater 4, the coil 43 is electrically connected with a preset alternating power supply, the magnetic conductive metal tube 41 is connected in series on the refrigerant heating secondary circuit 7, according to the electromagnetic induction principle, an alternating current is introduced into the coil 43 to generate an alternating magnetic field, the magnetic conductive metal tube 41 is arranged in the alternating magnetic field to generate a vortex phenomenon, the vortex enables atoms inside the magnetic conductive metal tube 41 to move randomly at a high speed, and the atoms collide with each other and rub to generate heat energy, so that the effect of heating the magnetic conductive metal tube 41 is achieved, and thus, the refrigerant flowing through the magnetic conductive metal tube 41 exchanges heat with the magnetic conductive metal tube 41 to be heated and heated.
In this embodiment, the air conditioning system includes a controller, a first temperature sensor disposed in the outdoor environment, a second temperature sensor disposed at the inlet of the outdoor heat exchanger 1, and a third temperature sensor disposed at the middle position of the indoor heat exchanger 2, and the first control valve 61 and the second control valve 71 are both solenoid valves, the controller is electrically connected to the first temperature sensor, the second temperature sensor, the third temperature sensor, the first control valve 61, the second control valve 71, and the alternating power source connected to the coil 43, respectively, the temperature data collected by the first temperature sensor, the second temperature sensor, and the third temperature sensor are transmitted to the controller in real time, the controller compares and analyzes the collected temperature data with a preset temperature value to determine whether the air conditioning system needs to enter the defrosting mode, when the air conditioning system needs to enter the defrosting mode, the controller controls the first control valve 61 to switch from the open state to the closed state and simultaneously controls the second control valve 71 to switch from the closed state to the open state, and synchronously controls the alternating power supply to start inputting current to the coil 43, at this time, the air conditioning system performs defrosting operation, when the controller judges that the defrosting of the air conditioning system is completed, the controller controls the first control valve 61 to switch from the closed state to the open state and simultaneously controls the second control valve 71 to switch from the open state to the closed state, and synchronously controls the alternating power supply to stop inputting current to the coil 43, at this time, the air conditioning system exits the defrosting operation.
In this embodiment, the magnetic conductive metal tube 41 is in a shape of a winding coil, so that the length of the magnetic conductive metal tube 41 is increased in a small space, the time for the low-temperature refrigerant to flow through the magnetic conductive metal tube 41 is effectively prolonged, and the heat exchange effect of the magnetic conductive metal tube 41 is improved.
In the present embodiment, the throttle device 3 is an electronic expansion valve.
In addition, it should be noted that the names of the parts and the like of the embodiments described in the present specification may be different, and all the equivalent or simple changes made according to the structure, the features and the principle of the present invention are included in the protection scope of the present invention. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (10)
1. The utility model provides an air conditioning system with do not shut machine frost function, includes that interconnect forms refrigerant circulation circuit's outdoor heat exchanger (1), cross valve, compressor (5), indoor heat exchanger (2) and throttling arrangement (3), its characterized in that: an electromagnetic heater (4) is arranged on a liquid refrigerant pipeline between the outdoor heat exchanger (1) and the indoor heat exchanger (2), wherein the electromagnetic heater (4) is configured to heat a refrigerant flowing into the outdoor heat exchanger (1) when the air conditioning system is in a defrosting mode.
2. An air conditioning system having a function of not stopping defrosting according to claim 1, characterized in that: the liquid refrigerant pipeline between the outdoor heat exchanger (1) and the throttling device (3) comprises a refrigerant circulation main channel (6) and a refrigerant heating auxiliary channel (7) which are connected in parallel, wherein the electromagnetic heater (4) is connected in series on the refrigerant heating auxiliary channel (7), and the refrigerant heating auxiliary channel (7) is configured to be conducted to heat the flowing refrigerant through the electromagnetic heater (4) when the air conditioning system is in a defrosting mode.
3. An air conditioning system having a function of not stopping defrosting according to claim 2, characterized in that: the refrigerant circulation main path (6) and the refrigerant heating secondary path (7) are respectively provided with a first control valve (61) and a second control valve (71), wherein when the air-conditioning system is in a defrosting mode, the first control valve (61) is closed, the second control valve (71) is opened, and when the air-conditioning system is in a non-defrosting mode, the first control valve (61) is opened, and the second control valve (71) is closed.
4. An air conditioning system having a function of not stopping defrosting according to claim 3, characterized in that: the number of the second control valves (71) is two, wherein one second control valve (71) is arranged at the inlet end of the secondary refrigerant heating path (7), and the other second control valve (71) is arranged at the outlet end of the secondary refrigerant heating path (7).
5. An air conditioning system having a function of not stopping defrosting according to claim 3, characterized in that: the first control valve (61) and the second control valve (71) are both solenoid valves.
6. An air conditioning system having a function of not stopping defrosting according to claim 1, characterized in that: the number of the indoor heat exchangers (2) is multiple, and the indoor heat exchangers (2) are connected in parallel.
7. An air conditioning system having a function of not stopping defrosting according to claim 1, characterized in that: the defrosting control system is characterized by further comprising a first temperature sensor arranged in an outdoor environment, a second temperature sensor arranged at the inlet end of the outdoor heat exchanger (1) and a third temperature sensor arranged at the middle position of the indoor heat exchanger (2), wherein whether the air-conditioning system enters a defrosting mode or not is judged according to temperature information respectively detected by the first temperature sensor, the second temperature sensor and the third temperature sensor.
8. An air conditioning system having a function of not stopping defrosting according to claim 1, characterized in that: the electromagnetic heater (4) comprises a magnetic conductive metal pipe (41), a support (42) and a coil (43), wherein the magnetic conductive metal pipe (41) and the coil (43) are respectively fixed above and below the support (42), and the magnetic conductive metal pipe (41) is connected in series on a liquid refrigerant pipeline between the outdoor heat exchanger (1) and the indoor heat exchanger (2).
9. An air conditioning system having a function of not stopping defrosting according to claim 8, characterized in that: the magnetic conductive metal tube (41) is in a winding coil shape.
10. An air conditioning system having a function of not stopping defrosting according to claim 1, characterized in that: the throttling device (3) is an electronic expansion valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922234130.2U CN211977301U (en) | 2019-12-13 | 2019-12-13 | Air conditioning system with function of defrosting without stopping machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922234130.2U CN211977301U (en) | 2019-12-13 | 2019-12-13 | Air conditioning system with function of defrosting without stopping machine |
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| Publication Number | Publication Date |
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| CN211977301U true CN211977301U (en) | 2020-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922234130.2U Active CN211977301U (en) | 2019-12-13 | 2019-12-13 | Air conditioning system with function of defrosting without stopping machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113028692A (en) * | 2021-03-31 | 2021-06-25 | 东北大学 | Direct type electromagnetic induction heating heat pump defrosting device and method |
| CN115077119B (en) * | 2022-07-01 | 2024-04-09 | 江苏省华扬新能源有限公司 | Energy-saving air conditioner capable of quickly defrosting without stopping |
-
2019
- 2019-12-13 CN CN201922234130.2U patent/CN211977301U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113028692A (en) * | 2021-03-31 | 2021-06-25 | 东北大学 | Direct type electromagnetic induction heating heat pump defrosting device and method |
| CN115077119B (en) * | 2022-07-01 | 2024-04-09 | 江苏省华扬新能源有限公司 | Energy-saving air conditioner capable of quickly defrosting without stopping |
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