CN210892258U - Outdoor system and heat pump system - Google Patents
Outdoor system and heat pump system Download PDFInfo
- Publication number
- CN210892258U CN210892258U CN201921962355.3U CN201921962355U CN210892258U CN 210892258 U CN210892258 U CN 210892258U CN 201921962355 U CN201921962355 U CN 201921962355U CN 210892258 U CN210892258 U CN 210892258U
- Authority
- CN
- China
- Prior art keywords
- refrigerant
- port
- heat exchanger
- tonifying
- outdoor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The utility model discloses an outdoor system and heat pump system. The outdoor system includes: the air supply device comprises an air supply compressor, a reversing component, an outdoor heat exchanger, a first heat exchanger and a refrigerant heater for heating a refrigerant in an air supply loop. The utility model discloses an outdoor system, be provided with the refrigerant heater who is arranged in carrying out the heating to the refrigerant in the tonifying qi return circuit, heat to the gaseous state through the refrigerant in the refrigerant heater in the tonifying qi return circuit, make gaseous refrigerant directly enter into the tonifying qi compressor through the tonifying qi mouth again, can increase the refrigerant circulation speed of tonifying qi compressor during the start-up on the one hand, increase the output of tonifying qi compressor, thereby accelerate the speed of heating, on the other hand, guarantee that the refrigerant that the tonifying qi return circuit got into the tonifying qi compressor is whole to gaseous state refrigerant, to tonifying qi compressor security, no liquid return risk.
Description
Technical Field
The utility model belongs to the technical field of air conditioning and specifically relates to an outdoor system and heat pump system are related to.
Background
In the related art, in the heating mode of the heat pump system, the refrigerant absorbs heat from outdoor air through the outdoor heat exchanger and transfers heat from the outdoor side to the indoor side to achieve a heating effect, but in the heating mode in winter, the lower the outdoor temperature is, the less heat can be transferred from the outdoor side to the indoor side, and the poorer the heating effect of the indoor air conditioner is.
And due to the characteristic of refrigerant migration during low-temperature heating starting, during the low-temperature heating starting, the time for the refrigerant to migrate from the indoor heat exchanger to the outdoor heat exchanger after starting is long, so that air cannot be quickly exerted during the starting. Therefore, in winter, the waiting time of hot air outlet of the indoor unit is long and the user experience is poor under the condition of low-temperature heating of the air conditioner.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least.
Therefore, the utility model provides an outdoor system to shorten the indoor set and go out hot-blast time, accelerate the speed of heating.
The utility model discloses still provide a heat pump system who has above-mentioned outdoor system.
According to the utility model discloses outdoor system, include: the air supply device comprises an air supply compressor, a reversing component, an outdoor heat exchanger, a first heat exchanger and a refrigerant heater for heating a refrigerant in an air supply loop. The air supply compressor comprises an exhaust port, a return air port and an air supply port, the reversing assembly is provided with a first valve port to a fourth valve port, the first valve port is communicated with one of the second valve port and the third valve port, the fourth valve port is communicated with the other of the second valve port and the third valve port, the first valve port is connected with the exhaust port, and the fourth valve port is connected with the return air port.
The first end of the outdoor heat exchanger is connected with the second valve port, the first heat exchanger comprises a first flow channel and a second flow channel which exchange heat with each other, the first end of the first flow channel is suitable for being connected with an indoor unit, a first throttling element is connected between the second end of the first flow channel and the second end of the outdoor heat exchanger in series, a second throttling element is connected between the first end of the second flow channel and the second end of the first flow channel in series, and the second end of the second flow channel is connected with the air supplementing port through an air supplementing loop.
According to the utility model discloses outdoor system, be provided with the refrigerant heater who is arranged in carrying out the heating to the refrigerant in the tonifying qi return circuit, heat to the gaseous state through the refrigerant in refrigerant heater to the tonifying qi return circuit, make gaseous refrigerant directly enter into the tonifying qi compressor through the tonifying qi mouth again, can increase the refrigerant circulation speed of tonifying qi compressor during the start-up on the one hand, increase the output of tonifying qi compressor, thereby accelerate the speed of heating, on the other hand, guarantee that the refrigerant that the tonifying qi return circuit got into the tonifying qi compressor is whole to gaseous state refrigerant, to tonifying qi compressor security, no liquid return risk.
In some embodiments of the present invention, the refrigerant heater includes: the air supply system comprises a second heat exchanger and a heating element, wherein the second heat exchanger is provided with a refrigerant flow path, the second heat exchanger is connected in series on an air supply loop, and the heating element is used for heating the second heat exchanger.
In some embodiments of the present invention, the heating member includes: the electromagnetic heating coil is suitable for being connected with a power supply, the electromagnetic heater senses the magnetic field of the electromagnetic heating coil to generate heat, and the electromagnetic heater is in contact with the second heat exchanger to transfer heat to the second heat exchanger.
In some embodiments of the present invention, the refrigerant heater further includes a heat insulation material, and the heat insulation material wraps the electromagnetic heater and the outside of the second heat exchanger.
In some embodiments of the present invention, the electromagnetic heater is a steel plate.
In some embodiments of the present invention, the second heat exchanger is a microchannel heat exchanger.
According to the utility model discloses heat pump system, include: indoor set and outdoor system, outdoor system does the utility model discloses in the above-mentioned embodiment outdoor system, the third valve port with the first end of first runner respectively with indoor set links to each other.
According to the utility model discloses heat pump system, be provided with the refrigerant heater who is arranged in carrying out the heating to the refrigerant in the tonifying qi return circuit, heat to the gaseous state through the refrigerant in refrigerant heater to the tonifying qi return circuit, make gaseous refrigerant directly enter into the tonifying qi compressor through the tonifying qi mouth again, can increase the refrigerant circulation speed of tonifying qi compressor during the start-up on the one hand, increase the output of tonifying qi compressor, thereby accelerate the speed of heating, on the other hand, guarantee that the tonifying qi return circuit gets into all gaseous state refrigerants that the tonifying qi compressor, to tonifying qi compressor security, no liquid return risk.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic diagram of an outdoor system according to an embodiment of the present invention;
fig. 2 is a schematic view of a heating element according to an embodiment of the present invention;
fig. 3 is a control logic diagram of a refrigerant heater during heating of the heat pump system according to the embodiment of the present invention;
fig. 4 is a control logic diagram of the refrigerant heater when the air supply circuit of the heat pump system has a risk of liquid return according to the embodiment of the present invention.
Reference numerals:
100. an outdoor system;
1. a compressor for supplying air; 11. an exhaust port; 12. an air return port; 13. an air supplement port;
2. a commutation assembly; 21. a first valve port; 22. a second valve port; 23. a third valve port; 24. a fourth valve port;
3. an outdoor heat exchanger;
4. a first heat exchanger; 41. a first flow passage; 42. a second flow passage;
5. a refrigerant heater; 51. a second heat exchanger; 52. a heating member; 521. an electromagnetic heating coil; 522. a power source; 523. an electromagnetic heater; 524. a piece of thermally insulating material;
6. and a gas replenishing loop.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
An outdoor system 100 according to an embodiment of the present invention is described below with reference to fig. 1-4, where the outdoor system 100 may be a enhanced vapor injection air conditioning system.
According to the utility model discloses outdoor system 100, include: the air supply system comprises an air supply compressor 1, a reversing component 2, an outdoor heat exchanger 3, a first heat exchanger 4 and a refrigerant heater 5 for heating the refrigerant in an air supply loop 6. The air supply compressor 1 comprises an exhaust port 11, an air return port 12 and an air supply port 13, wherein a refrigerant can enter the air supply compressor 1 from the air return port 12 and then is compressed by the air supply compressor 1 and then is exhausted from the exhaust port 11.
As shown in fig. 1, the direction changing assembly 2 has a first port 21 to a fourth port 24, the first port 21 is communicated with one of the second port 22 and the third port 23, and the fourth port 24 is communicated with the other of the second port 22 and the third port 23, it can be understood that the first port 21 is communicated with one of the second port 22 and the third port 23 in a switching manner, and the fourth port 24 is communicated with the other of the second port 22 and the third port 23 in a switching manner, and the refrigerant flow direction can be changed by operating the direction changing assembly 2, so that the air conditioning system provided with the outdoor system 100 can be switched between a cooling mode and a heating mode.
As shown in fig. 1, the first port 21 is connected to the exhaust port 11, and the fourth port 24 is connected to the return port 12. It can be understood that, by communicating the first valve port 21 with the exhaust port 11, the refrigerant discharged from the exhaust port 11 by the air make-up compressor 1 enters the reversing assembly 2 through the first valve port 21, the refrigerant in the reversing assembly 2 flows out through the second valve port 22 or the third valve port 23 according to the function mode of the outdoor system 100, and at the same time, the refrigerant in the reversing assembly 2 flows out through the fourth valve port 24 and then flows back into the air make-up compressor 1 through the return port 12.
A first end of the outdoor heat exchanger 3 is connected to the second valve port 22, so that the refrigerant flows between the outdoor heat exchanger 3 and the reversing assembly 2, for example, in the heating mode, the outdoor heat exchanger 3 allows the refrigerant with heat to flow into the reversing assembly 2 through the first end.
As shown in fig. 1, the first heat exchanger 4 includes a first flow passage 41 and a second flow passage 42 for exchanging heat with each other, and the first heat exchanger 4 may be a plate heat exchanger, it can be understood that there are two independent first flow passages 41 and second flow passages 42 in the first heat exchanger 4, and when the refrigerants in the first flow passages 41 and the second flow passages 42 sequentially flow through, the refrigerants in the first flow passages 41 and the second flow passages 42 can exchange heat with each other in the first heat exchanger 4.
Wherein, the first end of the first flow channel 41 is suitable for being connected with an indoor unit, and a first throttling element is connected in series between the second end of the first flow channel 41 and the second end of the outdoor heat exchanger 3. A second throttling element is connected in series between the first end of the second flow passage 42 and the second end of the first flow passage 41, and the second end of the second flow passage 42 is connected with the air replenishing port 13 through the air replenishing loop 6. It can be understood that, in the heating mode, the refrigerant enters the first heat exchanger 4 through the first end of the first flow channel 41 to be cooled, and then flows out from the second end of the first flow channel 41, a part of the flowed-out refrigerant flows to the outdoor heat exchanger 3 after being cooled by the first throttling element, the outdoor heat is absorbed by the outdoor heat exchanger 3 and then flows into the air make-up compressor 1, the other part of the flowed-out refrigerant flows through the second throttling element and then flows back into the first heat exchanger 4 through the first end of the second flow channel 42, at this time, the refrigerant in the second flow channel 42 and the refrigerant in the first flow channel 41 perform heat exchange, the temperature of the refrigerant in the second flow channel 42 rises and then flows out to the air make-up loop 6 from the second end of the second flow channel 42, the refrigerant is heated by the refrigerant heater 5 in the air make-up loop 6 and then flows into the air make-up compressor 1, so as to shorten the time for the indoor unit to output, the heating speed is accelerated.
In addition, a refrigerant heater 5 for heating the refrigerant in the air supply loop 6 is arranged in the air supply loop 6, when the outdoor system 100 is in a heating mode, the refrigerant in the air supply loop 6 is heated to a gaseous state by the refrigerant heater 5, and then the gaseous refrigerant directly enters the air supply compressor 1 through the air supply port 13, so that the air supply compressor 1 can quickly compress and then is discharged from the air discharge port 11, thereby shortening the time for discharging hot air from the indoor unit and accelerating the heating speed.
By arranging the refrigerant heater 5 in the air supply loop 6, during the low-temperature heating starting period, after the air supply compressor 1 is started, the refrigerant heater 5 is started, the power of the air supply compressor 1 can be effectively improved, and meanwhile, the refrigerant passing through the indoor unit returns to the air supply compressor 1 through the air supply loop 6 to realize quick heat absorption, so that hot air can be quickly discharged during the low-temperature heating period, and the purpose of quick heating is achieved.
It should be noted that, the flow rate of the refrigerant flowing into the air make-up circuit 6 and the outdoor heat exchanger 3 is controlled by the first throttling element and the second throttling element, when the outdoor temperature is low or during the low-temperature heating start period, most of the refrigerant can flow into the air make-up circuit 6, the refrigerant is heated by the refrigerant heater 5 in the air make-up circuit 6, and the heated gaseous refrigerant directly enters the air make-up compressor 1 through the air make-up port 13, so that on one hand, the refrigerant circulation speed of the air make-up compressor 1 during the start period can be increased, the output power of the air make-up compressor 1 is increased, and thus the heating speed is increased, on the other hand, the refrigerant entering the air make-up compressor 1 from the air make-up circuit 6 is all gaseous refrigerant, and no liquid.
According to the utility model discloses outdoor system 100, be provided with in tonifying qi return circuit 6 and be used for carrying out the refrigerant heater 5 that heats to the refrigerant in tonifying qi return circuit 6, heat to the gaseous state through the refrigerant heater 5 to the refrigerant in tonifying qi return circuit 6, make gaseous refrigerant directly enter into tonifying qi compressor 1 through tonifying qi mouth 13 again, on the one hand, can increase the refrigerant circulation speed of tonifying qi compressor 1 during the start-up, increase the output of tonifying qi compressor 1, thereby accelerate the speed of heating, on the other hand, ensure that the refrigerant that tonifying qi return circuit 6 got into tonifying qi compressor 1 is whole to gaseous state refrigerant, to tonifying qi compressor 1 security, no liquid return risk, thereby guarantee system reliability.
As shown in fig. 1 and 2, in some embodiments of the present invention, the refrigerant heater 5 includes: the second heat exchanger 51 has a refrigerant flow path, the second heat exchanger 51 is connected in series to the air make-up circuit 6, and the heating member 52 heats the second heat exchanger 51. That is to say, the second heat exchanger 51 is connected in series to the air make-up circuit 6, and in the process that the refrigerant flows through the second heat exchanger 51, the heating element 52 heats the second heat exchanger 51, so as to achieve the purpose of heating the refrigerant in the second heat exchanger 51. Thereby simplifying the structure of the refrigerant heater 5.
As shown in fig. 1 and 2, in some embodiments of the present invention, the heating member 52 includes: an electromagnetic heating coil 521 and an electromagnetic heater 523, the electromagnetic heating coil 521 is adapted to be connected to a power source 522, the electromagnetic heater 523 senses a magnetic field of the electromagnetic heating coil 521 to generate heat, and the electromagnetic heater 523 is in contact with the second heat exchanger 51 to transfer heat to the second heat exchanger 51. That is to say, after the electromagnetic heating coil 521 is communicated with the power supply 522, the electromagnetic heating coil 521 generates an electromagnetic induction magnetic field, the electromagnetic heater 523 generates heat under the action of the electromagnetic induction magnetic field, and transmits the heat to the second heat exchanger 51, so that the refrigerant passes through the second heat exchanger 51 to take away the heat in time, and the purpose of heating the refrigerant in the air supply loop 6 is achieved.
As shown in fig. 1 and fig. 2, in some embodiments of the present invention, the refrigerant heater 5 further includes a heat insulation material 524, and the heat insulation material 524 wraps the electromagnetic heater 523 and the second heat exchanger 51. That is to say, the outer sides of the electromagnetic heater 523 and the second heat exchanger 51 are wrapped with the heat insulation material 524, and the heat insulation material 524 may be heat insulation cotton to improve the heat insulation effect of the electromagnetic heater 523 and the second heat exchanger 51, so that the heat generated by the electromagnetic heater 523 can heat the second heat exchanger 51 better.
In some embodiments of the present invention, a heat insulation material 524 may be disposed between the outside of the second heat exchanger 51, the electromagnetic heater 523 and the magnetic heating coil, and the heat insulation material 524 may be heat insulation cotton to improve the heat insulation effect of the second heat exchanger 51, so that the heat generated by the electromagnetic heater 523 can heat the second heat exchanger 51 better.
In some embodiments of the present invention, the electromagnetic heater 523 is a steel plate. The steel plate generates heat under the action of the electromagnetic induction magnetic field, and transfers the heat to the second heat exchanger 51 to achieve the purpose of heating the second heat exchanger 51, so that the electromagnetic heater 523 has a simple structure, and the cost is saved.
In some embodiments of the present invention, the second heat exchanger 51 is a microchannel heat exchanger. That is to say, the second heat exchanger 51 may be a microchannel heat exchanger, after the electromagnetic heating coil 521 is communicated with the power supply 522, the electromagnetic heating coil 521 generates an electromagnetic induction magnetic field, the electromagnetic heater 523 generates heat under the action of the electromagnetic induction magnetic field, and transmits the heat to the microchannel heat exchanger, a plurality of fine flow channels are provided in the microchannel heat exchanger, so that the refrigerant can flow through the microchannel heat exchanger through the plurality of fine flow channels, so as to improve the flow rate of the refrigerant in each fine flow channel, so that the refrigerant flowing at a high speed takes away the heat in time, thereby increasing the heat exchange efficiency and meeting the higher energy efficiency standard.
According to the utility model discloses heat pump system, include: indoor set and outdoor system 100, outdoor system 100 is the outdoor system 100 of the above-mentioned embodiment of the present invention, and third valve 23 and the first end of first flow path 41 are connected to the indoor set respectively.
It can be understood that one end of the indoor unit is communicated with the third valve port 23, the other end of the indoor unit is communicated with the first end of the first flow channel 41, when in the heating mode, the refrigerant compressed by the air make-up compressor 1 and discharged from the exhaust port 11 enters the reversing assembly 2, the refrigerant in the reversing assembly 2 enters the indoor unit through the third valve port 23, and the refrigerant in the indoor unit flows into the first flow channel 41 after heat exchange.
Moreover, the refrigerant heater 5 for heating the refrigerant in the air supply loop 6 is arranged in the air supply loop 6, when the outdoor system 100 is in the heating mode, the refrigerant in the air supply loop 6 is heated to a gaseous state by the refrigerant heater 5, and then the gaseous refrigerant directly enters the air supply compressor 1 through the air supply port 13, so that the air supply compressor 1 can quickly compress and then is discharged from the exhaust port 11, thereby shortening the time of hot air discharge of the indoor unit and accelerating the heating speed.
According to the utility model discloses heat pump system, be provided with in tonifying qi return circuit 6 and be used for carrying out the refrigerant heater 5 that heats to the refrigerant in tonifying qi return circuit 6, heat to the gaseous state through the refrigerant heater 5 to the refrigerant in tonifying qi return circuit 6, make gaseous refrigerant directly enter into tonifying qi compressor 1 through tonifying qi mouth 13 again, can increase the refrigerant circulation speed of tonifying qi compressor 1 during the start-up on the one hand, increase the output of tonifying qi compressor 1, thereby accelerate the speed of heating, on the other hand, ensure that the refrigerant that tonifying qi return circuit 6 got into tonifying qi compressor 1 is whole to gaseous state refrigerant, to 1 security of tonifying qi compressor, no liquid return risk.
In some embodiments of the present invention, one end of the indoor unit is connected to the third port 23 through the gas-side stop valve, and the other end of the indoor unit is connected to the first end of the first flow channel 41 through the liquid-side stop valve.
As shown in fig. 1 to 4, according to the embodiment of the present invention, a method for controlling a heat pump system, the heat pump system is a heat pump system according to the embodiment of the present invention, the method includes the following steps: detecting the outdoor environment temperature during heating operation; determining whether the outdoor ambient temperature T is less than a first set temperature T0; if the outdoor ambient temperature T is less than the first set temperature T0, the refrigerant heater 5 is controlled to be turned on to heat the refrigerant in the charge air circuit 6.
That is to say, the outdoor environment temperature T can be detected, when the outdoor environment temperature T is less than the first set temperature T0, it is determined that the outdoor environment temperature is low, and there is a risk of low-temperature heating start, the refrigerant heater 5 is turned on to heat the refrigerant in the air make-up circuit 6 to a gaseous state, and then the gaseous refrigerant directly enters the air make-up compressor 1 through the air make-up port 13, on one hand, the refrigerant circulation speed of the air make-up compressor 1 during the start-up period can be increased, and the output power of the air make-up compressor 1 is increased, so that the heating speed is increased, on the other hand, it is ensured that all the refrigerants entering the air make-up compressor 1 in the air make-up circuit 6 are gaseous refrigerants.
According to the utility model discloses heat pump system's control method, be provided with in tonifying qi return circuit 6 and be used for carrying out the refrigerant heater 5 that heats to the refrigerant in tonifying qi return circuit 6, when there is low temperature to heat the start risk, heat to the gaseous state through refrigerant heater 5 to the refrigerant in tonifying qi return circuit 6, make gaseous refrigerant directly enter into tonifying qi compressor 1 through tonifying qi mouth 13 again, can increase the refrigerant circulation speed of tonifying qi compressor 1 during the start-up on the one hand, increase the output of tonifying qi compressor 1, thereby accelerate the speed of heating, on the other hand, it is gaseous state refrigerant to ensure that tonifying qi return circuit 6 gets into tonifying qi compressor 1's refrigerant is whole, to 1 security of tonifying qi compressor, no liquid return risk.
As shown in fig. 1 and fig. 3, in some embodiments of the present invention, after controlling the refrigerant heater 5 to be turned on, it is determined whether the condition of the refrigerant heater 5 satisfies at least one of the following conditions: the on time of the refrigerant heater 5 reaches the set time, and the temperature of the refrigerant heater 5 reaches a second set temperature T1; if the above at least one condition is satisfied, the refrigerant heater 5 is turned off, and if none of the conditions is satisfied, the heating power of the refrigerant heater 5 is adjusted.
Specifically, the make-up compressor 1 may be turned on first, then the refrigerant heater 5 may be turned on, and meanwhile, by detecting the turn-on time of the refrigerant heater 5 and the temperature of the refrigerant heater 5, when the turn-on time of the refrigerant heater 5 reaches the set time or the temperature of the refrigerant heater 5 reaches the second set temperature T1, the refrigerant heater 5 may be turned off, and at this time, the make-up compressor 1 has already entered the normal operation state, and the above conditions are not satisfied, the refrigerant heater 5 may continue to operate, and the heating power of the refrigerant heater 5 may be adjusted until one of the above conditions is satisfied.
It should be noted that, the heating power of the refrigerant heater 5 may be adjusted by PI controller (proportional integral controller) to perform PI adjustment control on the refrigerant heater 5, specifically, the deviation between the actual temperature of the refrigerant heater 5 and the second set temperature T1 is △ T, the value of △ T is used as the reference of PI adjustment control, when the value of △ T is larger, the power of the refrigerant heater 5 is larger, when the value of △ T is smaller, the power of the refrigerant heater 5 is smaller, when the value of △ T is zero, the power of the refrigerant heater 5 is zero, and the refrigerant heater 5 is turned off.
As shown in fig. 1 and 4, in some embodiments of the present invention, the control method further includes the following steps: when the heat pump system is in operation, detecting the temperature difference between the two ends of the second flow passage 42 and judging whether the temperature difference is smaller than a first set temperature difference T2; if the temperature difference is smaller than the first set temperature difference T2, the refrigerant heater 5 is controlled to be turned on to heat the refrigerant in the gas replenishing circuit 6, otherwise, the refrigerant heater 5 is controlled to be turned off.
That is to say, the temperature difference between the two ends of the second flow channel 42 can be detected to determine whether the temperature between the two ends of the second flow channel 42 is smaller than the first set temperature difference T2, and when it is determined that the temperature difference is smaller than the first set temperature difference T2, it is proved that the liquid return risk may exist in the gas supply loop 6, and at this time, the refrigerant heater 5 is turned on to heat the refrigerant in the gas supply loop 6, so as to ensure that the refrigerant flowing back to the gas supply compressor 1 from the gas supply loop 6 is in a gaseous state, thereby achieving the effect of preventing the liquid refrigerant from flowing to the gas supply compressor 1, and further protecting the gas supply compressor 1.
As shown in fig. 1, in some embodiments of the present invention, a temperature sensor T6a may be disposed at the first end of the second flow channel 42, and a temperature sensor T6b may be disposed at the second end of the second flow channel 42, so that the accuracy of detecting the temperature difference between the two ends of the second flow channel 42 may be improved by determining whether the temperature difference between the temperature sensor T6a and the temperature sensor T6b is smaller than the first set temperature difference T2.
As shown in fig. 1 and 4, in some embodiments of the present invention, after the refrigerant heater 5 is turned on, the temperature difference between the two ends of the second flow channel 42 is continuously detected and it is determined whether the temperature difference is smaller than a second set temperature difference T3; if the temperature difference reaches a second set temperature difference T3, the refrigerant heater 5 is turned off; if the temperature difference is smaller than the second set temperature difference T3, the refrigerant heater 5 is controlled to continue heating until the temperature difference reaches the second set temperature difference T3, and then the refrigerant heater 5 is turned off.
That is to say, in the process of turning on the refrigerant heater 5, the temperature difference between the two ends of the second flow channel 42 may be continuously monitored, and when the temperature difference is smaller than the second set temperature difference T3, it is proved that the liquid return risk may exist in the gas supply loop 6, so that the refrigerant flowing back from the gas supply loop 6 to the gas supply compressor 1 is ensured to be in a gaseous state by adjusting the heating power of the refrigerant heater 5, and the gas supply compressor 1 is further protected.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. An outdoor system, comprising:
the air supply compressor comprises an air outlet, an air return port and an air supply port;
a direction changing assembly having a first port communicating with one of the second port and the third port, a fourth port communicating with the other of the second port and the third port, the first port being connected to the exhaust port, the fourth port being connected to the return port;
the first end of the outdoor heat exchanger is connected with the second valve port;
the first heat exchanger comprises a first flow channel and a second flow channel which exchange heat with each other, the first end of the first flow channel is suitable for being connected with an indoor unit, a first throttling element is connected between the second end of the first flow channel and the second end of the outdoor heat exchanger in series, a second throttling element is connected between the first end of the second flow channel and the second end of the first flow channel in series, and the second end of the second flow channel is connected with the air supplementing port through an air supplementing loop;
and the refrigerant heater is used for heating the refrigerant in the air replenishing loop.
2. The outdoor system of claim 1, wherein the refrigerant heater comprises:
the second heat exchanger is provided with a refrigerant flow path and is connected in series on the air supply loop;
and the heating element is used for heating the second heat exchanger.
3. The outdoor system of claim 2, wherein the heating element comprises:
an electromagnetic heating coil adapted to be connected to a power source;
the electromagnetic heater is used for sensing the magnetic field of the electromagnetic heating coil to generate heat, and the electromagnetic heater is in contact with the second heat exchanger to transfer heat to the second heat exchanger.
4. The outdoor system of claim 3, wherein the refrigerant heater further comprises a piece of insulation material wrapped around the electromagnetic heater and the second heat exchanger.
5. The outdoor system of claim 3, where the electromagnetic heater is a steel plate.
6. The outdoor system of claim 2, where the second heat exchanger is a microchannel heat exchanger.
7. A heat pump system, comprising:
an indoor unit;
an outdoor system according to any one of claims 1 to 6, wherein the third port and the first end of the first flow channel are connected to the indoor unit, respectively.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921962355.3U CN210892258U (en) | 2019-11-13 | 2019-11-13 | Outdoor system and heat pump system |
| PCT/CN2020/078845 WO2021093229A1 (en) | 2019-11-13 | 2020-03-11 | Outdoor system, heat pump system, and control method for heat pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921962355.3U CN210892258U (en) | 2019-11-13 | 2019-11-13 | Outdoor system and heat pump system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210892258U true CN210892258U (en) | 2020-06-30 |
Family
ID=71314966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921962355.3U Active CN210892258U (en) | 2019-11-13 | 2019-11-13 | Outdoor system and heat pump system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210892258U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110726268A (en) * | 2019-11-13 | 2020-01-24 | 广东美的暖通设备有限公司 | Outdoor system, heat pump system, and method for controlling heat pump system |
| CN112432399A (en) * | 2020-12-08 | 2021-03-02 | 合肥美的暖通设备有限公司 | Heat exchange device and air conditioning system |
-
2019
- 2019-11-13 CN CN201921962355.3U patent/CN210892258U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110726268A (en) * | 2019-11-13 | 2020-01-24 | 广东美的暖通设备有限公司 | Outdoor system, heat pump system, and method for controlling heat pump system |
| CN112432399A (en) * | 2020-12-08 | 2021-03-02 | 合肥美的暖通设备有限公司 | Heat exchange device and air conditioning system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101975422B (en) | Warm/cool air-conditioner and defrosting method thereof | |
| CN102278794B (en) | Air conditioning device | |
| CN106288071A (en) | Electrochemistry air conditioning system | |
| KR20120053409A (en) | Refrigerator with a convertible chamber and an operation method thereof | |
| JP5805833B1 (en) | Heat pump air conditioner | |
| CN104729029A (en) | Air conditioning system and control method thereof | |
| CN105914422B (en) | A kind of new energy vehicle power battery thermal management system | |
| CN210892258U (en) | Outdoor system and heat pump system | |
| CN208968044U (en) | Teat pump boiler | |
| JP4104261B2 (en) | Water heater | |
| CN110173822A (en) | Progress control method, control device, air conditioner and computer readable storage medium | |
| JP4058696B2 (en) | Heat pump hot water supply system | |
| JP7467814B2 (en) | Air Conditioning System | |
| CN110836553A (en) | Control method of heat pump system | |
| CN117199628A (en) | Heat pump type thermal management system for electrochemical energy storage | |
| CN110726268A (en) | Outdoor system, heat pump system, and method for controlling heat pump system | |
| JP2003065585A (en) | Air conditioning system | |
| JP2003232581A (en) | Air conditioner | |
| JP2013203190A (en) | Battery temperature adjusting device | |
| CN105890084A (en) | Hot water supply system and air conditioner with same | |
| CN218602483U (en) | Fuel cell testing system | |
| CN201047687Y (en) | Hot gas bypass back-out concurrent heating defrost constant temperature hot-water system | |
| CN106403345A (en) | Heat pump system and control method thereof | |
| WO2021093229A1 (en) | Outdoor system, heat pump system, and control method for heat pump system | |
| CN210624788U (en) | Air conditioning system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |