CN215724947U - Heat pump dryer - Google Patents
Heat pump dryer Download PDFInfo
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- CN215724947U CN215724947U CN202122084721.3U CN202122084721U CN215724947U CN 215724947 U CN215724947 U CN 215724947U CN 202122084721 U CN202122084721 U CN 202122084721U CN 215724947 U CN215724947 U CN 215724947U
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Abstract
The present invention provides a heat pump dryer, comprising: the device comprises a drying device, a compressor, a first heat exchanger, a flash evaporator, a first throttling part, a second throttling part and a second heat exchanger; the drying device is provided with a cavity; the compressor is provided with an air inlet end, an air supplementing end and an air outlet end; the first heat exchanger is positioned in the cavity, and the inlet end of the first heat exchanger is connected with the air outlet end; the flash evaporator is provided with an input end, a gaseous refrigerant output end and a liquid refrigerant output end, the input end is connected with the outlet end of the first heat exchanger through a first throttling component, and the gaseous refrigerant output end is connected with the air supplementing end; the inlet end of the second heat exchanger is connected with the output end of the liquid refrigerant through a second throttling component, and the outlet end of the second heat exchanger is connected with the air inlet end. The utility model can improve the energy efficiency ratio of the dryer and achieve the purpose of energy saving; in addition, gaseous refrigerant is supplemented from the air supplementing end, the refrigerant quality sucked by the compressor is increased, the heating load is increased, and therefore the drying time of the dryer is reduced.
Description
Technical Field
The utility model relates to the technical field of drying equipment, in particular to a heat pump dryer.
Background
With the increase of the pursuit of consumers for quality life, the demand of the dryer is rapidly increasing. The heat pump type dryer adopts heat pump circulation, so that the energy consumption is low, the drying temperature is low, the heat pump type dryer can be suitable for more articles and is more and more favored by consumers.
At present, modes for improving the energy efficiency of a heat pump dryer include selecting a more efficient compressor, increasing the area of a heat exchanger, reducing the drying temperature and the like, but the modes and measures have the limitation of respective lifting amplitude and the defects thereof.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a heat pump dryer, which can improve the energy efficiency ratio of the dryer by arranging a flash evaporator to partially evaporate a refrigerant passing through a first heat exchanger to generate a gaseous refrigerant and supplementing the gaseous refrigerant into a compressor.
According to an aspect of the present invention, a heat pump dryer includes: the device comprises a drying device, a compressor, a first heat exchanger, a flash evaporator, a first throttling part, a second throttling part and a second heat exchanger; the drying device is provided with a cavity; the compressor is provided with an air inlet end, an air supplementing end and an air outlet end; the first heat exchanger is positioned in the cavity, and the inlet end of the first heat exchanger is connected with the air outlet end; the flash evaporator is provided with an input end, a gaseous refrigerant output end and a liquid refrigerant output end, the input end is connected with the outlet end of the first heat exchanger through a first throttling component, and the gaseous refrigerant output end is connected with the air supplementing end; the inlet end of the second heat exchanger is connected with the liquid refrigerant output end through a second throttling component, and the outlet end of the second heat exchanger is connected with the air inlet end.
The heat pump dryer according to the embodiment of the utility model has at least the following beneficial effects: the refrigerant after being decompressed by the first heat exchanger and the first throttling component enters the flash evaporator for gas-liquid separation, the generated gaseous refrigerant enters the gas supplementing end of the compressor from the gaseous refrigerant output end, and the pressure of the part of the gaseous refrigerant is greater than that of the gaseous refrigerant entering from the gas inlet end, so that the work of the compressor can be saved, the energy efficiency ratio of the dryer can be improved, and the purpose of saving energy can be achieved; in addition, gaseous refrigerant is supplemented from the air supplementing end, the refrigerant quality sucked by the compressor is increased, the heating load is increased, and therefore the drying time of the dryer is reduced.
According to some embodiments of the utility model, the drying device comprises a drying drum and a base, the base is provided with a drying air duct, and two ends of the drying air duct are respectively communicated with the drying drum to form an inner cavity of the cavity.
According to some embodiments of the utility model, the first heat exchanger and the second heat exchanger are both located within the drying duct.
According to some embodiments of the utility model, the first heat exchanger is located in front of the second heat exchanger in a direction of air circulation flow within the cavity.
According to some embodiments of the utility model, the drum is rotatably arranged.
According to some embodiments of the utility model, the first throttling element is provided as a capillary tube or a thermostatic expansion valve or an electronic expansion valve.
According to some embodiments of the utility model, the second throttle member is provided as a capillary tube or a thermostatic expansion valve or an electronic expansion valve.
According to some embodiments of the utility model, the gaseous refrigerant output is higher than the liquid refrigerant output.
According to some embodiments of the present invention, a check valve is disposed between the gaseous refrigerant output end and the air supply end.
According to some embodiments of the present invention, a control valve is disposed between the gaseous refrigerant output end and the air supply end.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Reference numerals:
a compressor 100; an air inlet end 110; a gas supplement end 120; an air outlet end 130;
a first heat exchanger 200;
a first throttling member 300;
a flash evaporator 400; an input terminal 410; a gaseous refrigerant output 420; a liquid refrigerant output 430;
a second throttling member 500;
a second heat exchanger 600;
a first conduit 710; a second conduit 720; a third pipe 730; a fourth pipe 740; a fifth pipe 750;
a drying drum 810; a base 820; a cavity 830; a drying air duct 840;
a one-way valve 900.
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 or similar 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 accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to, for example, the upper, lower, etc., is indicated based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
In the description of the present invention, a plurality means two or more. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
As shown in fig. 1, a heat pump dryer, which may be used for drying laundry, includes: the drying device, the compressor 100, the first heat exchanger 200, the first throttling component 300, the flash evaporator 400, the second throttling component 500 and the second heat exchanger 600.
Specifically, the drying device has a cavity 830, wherein the cavity 830 is used for placing the object to be dried, and the air in the cavity 830 can flow circularly to accelerate the drying process; the compressor 100 adopts an air-supply type compressor 100, and the compressor 100 is provided with an air inlet end 110, an air supply end 120 and an air outlet end 130; the first heat exchanger 200 is positioned in the cavity 830, the first heat exchanger 200 is arranged as a condenser, and the inlet end of the first heat exchanger 200 is connected with the air outlet end 130 through a first pipeline 710; the flash evaporator 400 is provided with an input end 410, a gaseous refrigerant output end 420 and a liquid refrigerant output end 430, the input end 410 is connected with the outlet end of the first heat exchanger 200 through the first throttling part 300, second pipelines 720 are respectively arranged between the input end 410 and the first throttling part 300 and between the first throttling part 300 and the first heat exchanger 200, and the gaseous refrigerant output end 420 is connected with the air supply end 120 through a third pipeline 730; the second heat exchanger 600 is configured as an evaporator, the inlet end of the second heat exchanger 600 is connected to the liquid refrigerant output end 430 through the second throttling component 500, the outlet end of the second heat exchanger 600 is connected to the air inlet end 110 through the fifth pipeline 750, and fourth pipelines 740 are disposed between the second heat exchanger 600 and the second throttling component 500, and between the second throttling component 500 and the liquid refrigerant output end 430.
The flash evaporator 400 is a special gas-liquid separator, and a common gas-liquid separator for an air conditioner generally has only two ports, one is a gas-liquid mixture inlet, and the other is a gas outlet. The flash evaporator 400 has three ports, one is an input port 410 for the refrigerant in a gas-liquid mixed state, the other two ports are a gaseous refrigerant output port 420, the other two ports are a liquid refrigerant output port 430, the flash evaporator 400 is used at the outlet of the condenser, and most of the circulating refrigerant is in a medium-pressure liquid refrigerant.
The operating principle of the flash evaporator 400 is: the gas-liquid mixed refrigerant enters the flash evaporator 400 from the input end, and after gas-liquid separation in the flash evaporator 400, the gaseous refrigerant flows out from the gaseous refrigerant output end 420, and the liquid refrigerant flows out from the liquid refrigerant output end 430.
In the above embodiment, after the high-temperature and high-pressure gaseous refrigerant generated by the compressor 100 comes out from the air outlet end 130, the high-temperature and high-pressure gaseous refrigerant enters the first heat exchanger 200 through the first pipeline 710, is condensed and releases heat in the first heat exchanger 200, the released heat heats the air in the cavity 830, the heat-released refrigerant passes through the second pipeline 720, is depressurized through the first throttling component 300, and then enters the flash evaporator 400, the refrigerant entering the flash evaporator 400 includes gaseous refrigerant and liquid refrigerant, the gaseous refrigerant and the liquid refrigerant are subjected to gas-liquid separation in the flash evaporator 400, the separated gaseous refrigerant flows through the third pipeline 730 from the gaseous refrigerant output end 420 and then enters the air supply end 120 of the compressor 100, the separated liquid refrigerant enters the fourth pipeline 740 from the liquid refrigerant output end 430, enters the second throttling component 500 for depressurization, and then flows into the second heat exchanger 600, the second heat exchanger 600 absorbs heat of the surrounding environment to evaporate the liquid refrigerant, so as to generate a low-pressure gaseous refrigerant, and the low-pressure gaseous refrigerant flows into the compressor 100 through the fifth pipeline 750.
In the above process, the pressure of the gaseous refrigerant separated by the flash evaporator 400 is greater than the pressure of the gaseous refrigerant entering from the air inlet 110, so that the work of the compressor 100 can be saved, the energy efficiency ratio of the dryer can be improved, and the purposes of saving energy and reducing consumption can be achieved; in addition, the gaseous refrigerant is supplemented from the gas supplementing end 120, so that the refrigerant quality sucked by the compressor 100 is increased, the heating load is increased, the drying time of the dryer is reduced, the temperature of the gaseous refrigerant at the gas outlet end 130 of the compressor 100 can be reduced, and the damage of high temperature to a dryer is reduced. Compared with the traditional heat pump dryer, the embodiment only adds the flash evaporator 400, and effectively improves the energy efficiency ratio of the heat pump dryer on the premise of slightly increasing the cost; simple structure is practical, and the effect is showing.
In addition, the air supply mode of the compressor can be realized by the prior art modes such as piston cutting, check valves, double-cylinder independent compression, single-cylinder independent compression and the like, and the details are not repeated herein.
It will be appreciated by those skilled in the art that in order to accelerate the flow of air within the chamber 830, a separate fan may be provided within the chamber 830 that rotates to drive the flow of air within the chamber 830.
In the above embodiment, the heat released by the first heat exchanger 200 can heat the air in the cavity 830, the air is heated and then flows to the periphery of the object to be dried to heat the object to be dried, the moisture in the object to be dried is gradually volatilized, the moisture volatilized is dissipated into the cavity 830 to increase the humidity of the air in the cavity 830, the humidity of the air in the cavity 830 is too high, the volatilization efficiency of the moisture in the object to be dried is reduced, and the drying efficiency is reduced, therefore, the dehumidifying device in the cavity 830 can be considered, the dehumidifying device can be set to a ventilation structure, namely, an opening is formed in the cavity 830, the air with high humidity in the cavity 830 is discharged, and the outside air is introduced into the cavity 830.
As shown in fig. 1, in order to reduce the cost and fully utilize the existing structure of the dryer, in some embodiments of the present invention, the second heat exchanger 600 may be disposed in the cavity 830, the temperature of the outer surface of the second heat exchanger 600 is lower than the temperature of the air in the cavity 830, when the outer surface of the second heat exchanger 600 meets the air with high humidity in the cavity 830, water vapor in the air may condense on the surface of the second heat exchanger 600 to form condensed water, and then the condensed water is collected and timely discharged out of the cavity 830, so that the humidity of the air in the cavity 830 may be effectively reduced, and the drying efficiency may be guaranteed.
Specifically, as shown in fig. 1, drying device includes a drying cylinder 810 and a base 820, the inside setting of drying cylinder 810 is the cavity form, be used for placing the thing of waiting to dry, the inside stoving wind channel 840 that is provided with of base 820, first heat exchanger 200 and second heat exchanger 600 are located stoving wind channel 840, the both ends in stoving wind channel 840 communicate with the both ends of drying cylinder 810 respectively in order to form the inner chamber of cavity 830, cavity 830 is closed ring-shaped, make things convenient for the circulation of air circulation, set up the fan in stoving wind channel 840, accelerate the flow velocity of the interior air of cavity 830. In the embodiment, the objects to be dried are separated from the first heat exchanger 200 and the second heat exchanger 600, so that mutual interference can be avoided, and the working stability is improved; meanwhile, the manufacturing assembly modularization is facilitated, and the later maintenance is also facilitated.
The drying cylinder 810 can be arranged in a cylindrical shape, and the drying cylinder 810 can rotate, so that the to-be-dried objects in the drying cylinder 810 are driven to turn over, the to-be-dried objects are uniformly heated, and the drying efficiency is improved.
Specifically, as shown in fig. 1, the air in the cavity 830 flows in a counterclockwise circulation manner, the first heat exchanger 200 is located on the right, and the second heat exchanger 600 is located on the left, so that the drying efficiency can be improved, and the humidity of the air in the cavity 830 can be reduced. In the above embodiment, the air heated by the first heat exchanger 200 contacts with the object to be dried first, the object to be dried is heated, after moisture in the object to be dried volatilizes, the air is mixed with the air and then flows backwards along the counterclockwise direction until the air contacts with the outer surface of the second heat exchanger 600, because the temperature of the outer surface of the second heat exchanger 600 is lower than that of the air in the cavity 830, water vapor condenses on the outer surface of the second heat exchanger 600 to form condensed water, and the condensed water is collected and discharged out of the cavity 830 through a pipeline, thereby achieving the purpose of reducing the humidity of the air in the cavity 830. In the whole cavity 830, the air heated by the first heat exchanger 200 has the highest temperature, the air with the highest temperature is used for heating the object to be dried, the efficiency is high, the air temperature after the air is subjected to heat exchange with the object to be dried is reduced, then the air is subjected to heat exchange with the second heat exchanger 600, meanwhile, the air with high humidity is condensed on the surface of the second heat exchanger 600 to generate condensed water, and then the condensed water is collected and discharged.
In some embodiments of the present invention, specifically, the gaseous refrigerant output end 420 is located higher than the liquid refrigerant output end 430 in the vertical direction, so that the separated gaseous refrigerant is conveniently conveyed outwards, and the separation efficiency is improved.
In some specific environments, when the pressure of the gaseous refrigerant separated from the flash evaporator 400 is lower than the pressure of the gaseous refrigerant in the air supply end 120, the gaseous refrigerant in the compressor 100 may flow back into the flash evaporator 400, so that the amount of the cold medium in the compressor 100 is reduced, the compression ratio is increased, the heating load is reduced, and the energy efficiency ratio of the dryer is reduced; to avoid this, in some embodiments of the present invention, a check valve 900 is disposed on the third pipeline 730 between the gaseous refrigerant output end 420 and the gas supplementing end 120; when the pressure of the gaseous refrigerant separated from the flash evaporator 400 is higher than the pressure of the gaseous refrigerant at the air supply end 120, the check valve 900 is opened, and the gaseous refrigerant separated from the flash evaporator 400 can be smoothly supplemented into the compressor 100; when the pressure of the gaseous refrigerant separated from the flash evaporator 400 is lower than the pressure of the gaseous refrigerant at the air supply end 120, the check valve 900 is closed, the gaseous refrigerant at the air supply end 120 cannot flow back into the flash evaporator 400, and the total quality of the refrigerant in the compressor 100 is guaranteed not to be reduced.
In some embodiments of the present invention, in order to facilitate controlling the gas supplementing operation of the compressor 100, a control valve is disposed on the third pipeline 730 between the gaseous refrigerant output end 420 and the gas supplementing end 120; the control valve can adopt an electromagnetic valve so as to realize automatic control, and the control valve determines whether to open or not according to a received instruction, so that air supplement can be realized according to requirements, and fine control can be realized.
Specifically, the first throttling part 300 is configured as a capillary tube, and can throttle and depressurize the refrigerant, and in addition, it can be understood by those skilled in the art that the first throttling part 300 can also be configured as a thermal expansion valve or an electronic expansion valve, and can both effectively play a role in throttling and depressurizing.
Specifically, the second throttling part 500 is a capillary tube, which can throttle and depressurize the refrigerant, and in addition, it can be understood by those skilled in the art that the second throttling part 500 can also be a thermal expansion valve or an electronic expansion valve, which can both effectively play a role in throttling and depressurizing.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. A heat pump dryer, comprising:
a drying device having a cavity;
the compressor is provided with an air inlet end, an air supplementing end and an air outlet end;
the first heat exchanger is positioned in the cavity, and the inlet end of the first heat exchanger is connected with the air outlet end;
the flash evaporator is provided with an input end, a gaseous refrigerant output end and a liquid refrigerant output end, the input end is connected with the outlet end of the first heat exchanger through a first throttling component, and the gaseous refrigerant output end is connected with the air supplementing end;
and the inlet end of the second heat exchanger is connected with the liquid refrigerant output end through a second throttling component, and the outlet end of the second heat exchanger is connected with the air inlet end.
2. The heat pump dryer of claim 1, wherein the drying device comprises a drying drum and a base, the base is provided with a drying air duct, and two ends of the drying air duct are respectively communicated with the drying drum to form an inner cavity of the cavity.
3. The heat pump dryer of claim 2, wherein the first heat exchanger and the second heat exchanger are both located within the drying air duct.
4. The heat pump dryer of claim 3, wherein the first heat exchanger is located forward of the second heat exchanger in a direction of circulating air within the cavity.
5. The heat pump dryer of claim 2, wherein the drum is rotatably disposed.
6. The heat pump dryer of claim 1, wherein the first throttling part is provided as a capillary tube or a thermal expansion valve or an electronic expansion valve.
7. The heat pump dryer of claim 1, wherein the second throttling part is provided as a capillary tube or a thermal expansion valve or an electronic expansion valve.
8. The heat pump dryer of claim 1, wherein the gaseous refrigerant output is at a higher position than the liquid refrigerant output.
9. The heat pump dryer of claim 1, wherein a check valve is disposed between the gaseous refrigerant output end and the air make-up end.
10. The heat pump dryer of claim 1, wherein a control valve is disposed between the gaseous refrigerant output end and the air make-up end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122084721.3U CN215724947U (en) | 2021-08-31 | 2021-08-31 | Heat pump dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122084721.3U CN215724947U (en) | 2021-08-31 | 2021-08-31 | Heat pump dryer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215724947U true CN215724947U (en) | 2022-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122084721.3U Active CN215724947U (en) | 2021-08-31 | 2021-08-31 | Heat pump dryer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215724947U (en) |
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2021
- 2021-08-31 CN CN202122084721.3U patent/CN215724947U/en active Active
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