CN211972836U

CN211972836U - Heat pump clothes dryer

Info

Publication number: CN211972836U
Application number: CN201922330895.6U
Authority: CN
Inventors: 刘庆伟; 邴进东; 刘秀姣
Original assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-11-20
Anticipated expiration: 2029-12-23

Abstract

The utility model relates to the technical field of household appliances, especially, relate to a heat pump clothes dryer. This heat pump dryer includes cylinder and heat pump system, heat pump system is including connecting gradually compressor, condenser and the evaporimeter that forms medium circulation passageway, the cylinder the evaporimeter with the condenser connects gradually and forms the circulation wind channel, heat pump system still includes vapour and liquid separator, set up in the condenser with between the evaporimeter, can with by the medium that the condenser flows carries out twice gas-liquid separation at least to make liquid medium get into the evaporimeter. The gas-liquid separator is arranged between the condenser and the evaporator, so that gaseous media can be prevented from entering the evaporator, the waste of the heat exchange area of the evaporator is avoided, and the heat exchange effect is improved; the gas-liquid separator can perform gas-liquid separation on the medium for at least two times, so that the gas-liquid separation is more thorough, and the energy efficiency of the heat pump system is further improved.

Description

Heat pump clothes dryer

Technical Field

The utility model relates to the technical field of household appliances, especially, relate to a heat pump clothes dryer.

Background

At present, the heat pump type clothes dryer is widely applied due to the characteristics of high efficiency and energy conservation. The heat pump system includes a compressor, a condenser, and an evaporator to form a circulation passage of a heat exchange medium. In addition to the compressor and the heat exchange medium, the evaporator and the condenser have a large influence on the energy efficiency of the heat pump dryer and the duration of the drying cycle.

In a traditional heat pump system, when a medium enters an evaporator from a condenser, a part of liquid medium is changed into a gas state, the refrigerating capacity of the part of gas state is small, the area of the part of evaporator is wasted, and the energy efficiency of the heat pump system is influenced. In order to solve the problems, the existing heat pump system avoids gaseous media from entering an evaporator by adding a gas-liquid separator to perform primary gas-liquid separation, but the gas-liquid separation effect is poor, the gas-liquid separation is not thorough, and the energy efficiency of the heat pump system can still be influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a heat pump clothes dryer can avoid in gaseous state medium gets into the evaporimeter for gas-liquid separation is more thorough.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a heat pump clothes dryer, includes cylinder and heat pump system, heat pump system is including connecting gradually compressor, condenser and the evaporimeter that forms medium circulation passageway, the cylinder the evaporimeter with the condenser connects gradually and forms the circulation wind channel, heat pump system still includes:

and the gas-liquid separator is arranged between the condenser and the evaporator and can carry out gas-liquid separation on the medium flowing out of the condenser at least twice so as to enable the liquid medium to enter the evaporator.

The liquid outlet of the gas-liquid separator is communicated with the medium inlet of the evaporator, and the gas outlet of the gas-liquid separator is communicated with the medium inlet of the compressor.

Wherein a capillary tube is arranged between the condenser and the gas-liquid separator.

The gas-liquid separator comprises at least two separation cavities which are sequentially communicated, a gas-liquid mixing inlet and a gas outlet are formed in the top of each separation cavity, a liquid outlet is formed in the bottom of each separation cavity, and the gas outlet of each separation cavity located on the upstream of the fluid is communicated with the gas-liquid mixing inlet of each separation cavity located on the downstream of the fluid.

Wherein the gas-liquid separator further comprises:

the gas-liquid mixing inlet is inserted into the separation cavity, and the length of the gas-liquid mixing inlet extending into the separation cavity is smaller than the depth of the separation cavity; and

the separation tube is arranged in the separation cavity, the bottom end of the separation tube is communicated with the liquid outlet, the separation tube is sleeved outside the inlet tube, and the length of the separation tube is smaller than the depth of the separation cavity.

Wherein the gas-liquid separator further comprises:

and one end of the communicating pipe is communicated with the gas-liquid mixing inlet of one of the two adjacent separation chambers, and the other end of the communicating pipe is communicated with the gas outlet of the other of the two adjacent separation chambers.

Wherein, be provided with in the separator tube and keep off the class board, keep off class board and be located the below of leading in the pipe.

The separation pipe is internally provided with a plurality of flow baffle plates along the vertical direction, and the flow baffle plates are arranged in a staggered manner.

Wherein, the pipe diameter of a plurality of said pipe that lets in reduces along the flow direction of fluid one by one.

The condenser is a micro-channel heat exchanger, and the evaporator is a copper tube fin type evaporator.

Has the advantages that: the gas-liquid separator is arranged between the condenser and the evaporator, so that gaseous media can be prevented from entering the evaporator, the waste of the heat exchange area of the evaporator is avoided, and the heat exchange effect is improved; the gas-liquid separator can perform gas-liquid separation on the medium for at least two times, so that the gas-liquid separation is more thorough, and the energy efficiency of the heat pump system is further improved.

Drawings

Fig. 1 is a schematic structural diagram of a heat pump clothes dryer provided in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a gas-liquid separator according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a gas-liquid separator according to a third embodiment of the present invention.

Wherein:

1. a drum; 2. a compressor; 3. a condenser; 4. an evaporator; 5. a capillary tube; 6. a gas-liquid separator; 61. a separation chamber; 62. introducing a pipe; 63. a separation tube; 64. a communicating pipe; 65. a gas outlet; 66. keep off the flow board.

Detailed Description

Reference will now be made in detail to the 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 functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly and encompass, for example, both fixed and removable connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in direct contact with the second feature but being in contact with the second feature by another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Example one

The embodiment provides a heat pump clothes dryer, which can make full use of the heat exchange area in an evaporator, thereby improving the clothes drying efficiency of the heat pump clothes dryer.

As shown in fig. 1, the heat pump dryer includes a cabinet, a drum 1 rotatably disposed in the cabinet, and a heat pump system disposed between the cabinet and the drum 1. A medium circulation channel is formed in the heat pump system, the heat pump system and the roller 1 form a circulation air channel, a medium in the medium circulation channel exchanges heat with air flow in the circulation air channel, so that the air flow is heated, the heated air flow enters the roller 1 to heat wet clothes in the roller, and moisture in the wet clothes is evaporated. The clothes can be dried by the circulating heat exchange of the medium and the air flow.

Specifically, the heat pump system comprises a compressor 2, a condenser 3 and an evaporator 4 which are sequentially connected to form a medium circulation channel, and the medium channel is arranged in each of the compressor 2, the condenser 3 and the evaporator 4. The medium outlet of the compressor 2 is communicated with the medium inlet of the condenser 3, the medium outlet of the condenser 3 is communicated with the medium inlet of the evaporator 4, the medium outlet of the evaporator 4 is communicated with the medium inlet of the compressor 2, and the medium flows through the condenser 3 and the evaporator 4 in sequence from the outflow port of the compressor 2 and then flows back into the compressor 2.

Still be provided with the air current way in the casing, evaporimeter 4 and condenser 3 all set up at the air current way, are provided with gas vent and income gas port on the cylinder 1, and the gas vent on the cylinder 1 communicates with the income gas port of air current way, and the gas in the air current way is in proper order behind evaporimeter 4 and condenser 3, with the income gas port intercommunication on the cylinder 1 to realize the circulation wind channel. The temperature of the gas passing through the gas flow channel is raised through heat exchange with a heat exchange medium, after the high-temperature gas enters the roller 1, moisture in wet clothes is evaporated to form wet-hot gas, after the wet-hot gas enters the gas flow channel, the wet-hot gas is cooled by the evaporator 4 to condense the moisture in the wet-hot gas, so that the dry gas is dried, and after the heat exchange of the dry gas is carried out by the condenser 3, the high-temperature gas is formed, so that the high-temperature gas enters the roller 1 again. The circulation achieves the aim of drying the clothes.

In the circulation process of the medium in the medium channel, the medium passing through the compressor 2 is a high-temperature medium, the high-temperature medium enters the condenser 3 and exchanges heat with the dry air passing through the condenser 3, the temperature of the medium is reduced, and the temperature of the dry air is increased to form high-temperature gas. The medium with the reduced temperature further flows into the evaporator 4 to exchange heat with the damp-heat gas passing through the evaporator 4, and absorbs heat in the damp-heat gas, so that the damp-heat gas is cooled, moisture in the damp-heat gas is condensed into water, and the dry gas is separated to exchange heat with the condenser 3. The medium with the increased temperature enters the compressor 2, further increasing the temperature. The circulation is carried out in such a way, and the heat exchange is carried out with the gas in the circulating air duct.

Optionally, a capillary tube 5 is further provided between the condenser 3 and the evaporator 4. The capillary tube 5 can act as a throttle, so that the heat exchange performance of the evaporator 4 and the condenser 3 is more matched.

Optionally, the condenser 3 is a micro-channel heat exchanger, and the evaporator 4 is a copper tube fin type evaporator, which is beneficial to improving the heat exchange performance of the heat pump system.

After the heat exchange medium passes through the condenser 3, the heat exchange medium is converted into a liquid state from a gas state due to the temperature reduction of the medium, but the condition of coexistence of the gas state and the liquid state exists, and after the gas state heat exchange medium enters the evaporator 4, the heat exchange effect of the gas state heat exchange medium is poor compared with the heat exchange effect of the damp and hot air, so that the heat exchange area of the evaporator 4 is wasted, the heat exchange effect is influenced, and the energy efficiency of the heat pump system is influenced.

In order to solve the above problems, the heat pump system further includes a gas-liquid separator 6, the gas-liquid separator 6 is disposed between the capillary tube 5 and the evaporator 4, and is capable of performing gas-liquid separation on the medium flowing out of the condenser 3, so that the liquid medium enters the evaporator 4 to absorb heat, thereby avoiding waste of heat exchange area in the evaporator 4 after the gaseous medium enters, and further improving energy efficiency of the heat pump system.

Optionally, the liquid outlet of the gas-liquid separator 6 is communicated with the medium inlet of the evaporator 4, so that the liquid medium enters the evaporator 4 to exchange heat with the damp and hot air; the gas outlet 65 of the gas-liquid separator 6 is communicated with the medium inlet of the compressor 2, so that the direct waste of gas state is avoided, and the separated gas state medium directly enters the compressor 2 for further temperature rise.

In order to further improve the heat exchange effect in the evaporator 4, the gas-liquid separator 6 can perform gas-liquid separation at least twice, so that the gas medium and the liquid medium can be separated more thoroughly.

Specifically, the gas-liquid separator 6 includes at least two separation chambers 61 that are sequentially communicated, a gas-liquid mixture inlet and a gas outlet 65 are provided at the top of the separation chamber 61, a liquid outlet is provided at the bottom of the separation chamber 61, and the gas outlet 65 of the separation chamber 61 located upstream of the fluid and the gas-liquid mixture inlet of the separation chamber 61 located downstream of the fluid are communicated. The air current passes through two at least separation chamber 61 in proper order, and the air current all passes through a gas-liquid separation in every separation chamber 61 to realize twice gas-liquid separation at least, make gas and liquid separation more thorough.

As shown in fig. 2, in the present embodiment, the gas-liquid separator 6 includes two separation chambers 61, i.e., a left separation chamber and a right separation chamber, respectively, for convenience of description. The air current gets into left separation intracavity from the gas-liquid mixture import of left separation chamber, after once separating in left separation intracavity, liquid flows out by the liquid outlet of left separation chamber, and gas gets into right separation intracavity through the gas outlet 65 of left separation chamber, the gas-liquid mixture import of right separation chamber in proper order to carry out secondary gas-liquid separation. Alternatively, the gas outlet 65 of the left separation chamber communicates with the gas-liquid mixture inlet of the right separation chamber through the communicating pipe 64 to connect the two separation chambers 61 in series.

The separation cavity 61 also comprises an inlet pipe 62 and a separation pipe 63, the inlet pipe 62 is inserted into the separation cavity 61 through a gas-liquid mixing inlet, and the length of the inlet pipe 62 extending into the separation cavity 61 is smaller than the depth of the separation cavity 61, so that a gap exists between one end of the inlet pipe 62 extending into the separation cavity 61 and the inner wall of the separation cavity 61. The bottom end of the separation pipe 63 is communicated with the liquid outlet of the separation cavity 61, the separation pipe 63 is sleeved outside the access pipe 62, and the length of the separation pipe 63 is smaller than the depth of the separation cavity 61.

After the medium enters the separation chamber 61 through the inlet pipe 62, the liquid will be subjected to gravity and will have a downward velocity when flowing together with the gas due to the different densities of the gaseous and liquid media, while the gas will still flow in the original direction, so that the liquid and gas will tend to separate in the inlet pipe 62. After the gaseous and liquid media enter the separation pipe 63 through the inlet pipe 62, because the pipe diameter of the separation pipe 63 is larger than that of the inlet pipe 62, the resistance of the media is reduced, and the gas has the escape property, the gas flows upwards along the gap between the inlet pipe 62 and the separation pipe 63, and then flows out from the gas outlet 65 at the top of the separation cavity 61; the liquid will continue to flow downwards under the influence of gravity and will flow out through the liquid outlet at the bottom of the separation chamber 61, whereby a separation of gas and liquid is achieved.

In this embodiment, gas-liquid separator 6's simple structure, it is small, can reduce heat pump system's cost, reduce the space that heat pump system occupy, improve the space utilization in the casing.

In order to improve the separation effect of the gas-liquid separator 6, the diameters of the plurality of inlet pipes 62 are gradually reduced along the flow direction of the fluid, so that the gap between the inlet pipes 62 and the separation pipe 63 is gradually increased along the flow direction of the fluid, the gas flows more smoothly up and down, and the separation effect is further improved.

Example two

The present embodiment provides a heat pump clothes dryer, which is different from the first embodiment in that a spiral separation pipe is disposed in the separation chamber 61, one end of the spiral separation pipe is communicated with the gas inlet, and the other end of the spiral separation pipe is spaced from the bottom of the separation chamber 61.

After the gas-liquid mixed fluid enters the spiral separation pipe, the fluid rotates and flows together, and the centrifugal force applied to the liquid is greater than that applied to the gas, so that the liquid has a centrifugal separation tendency, is attached to the pipe wall of the spiral separation pipe, and is gathered together under the action of gravity, so that the liquid is discharged through a liquid outlet at the bottom of the separation cavity 61; the gas will be discharged after separation through a gas outlet 65 at the top of the separation chamber 61.

Through setting up the spiral separation pipe, can improve the flow stroke of gas-liquid mixture fluid on the basis of not increasing the size of separation chamber 61 to make liquid and gas separate more thoroughly under the effect of centrifugal force.

EXAMPLE III

As shown in fig. 3, the present embodiment provides a heat pump clothes dryer, in addition to the first embodiment, a flow baffle 66 is further disposed in the separation pipe 63, and the flow baffle 66 is located below the inlet pipe 62. After the gas flow mixed with the liquid enters the separation pipe 63 through the inlet pipe 62, the gas is blocked by the baffle plate 66, the gas is deflected, and the liquid is attached to the baffle plate 66 due to inertia and continues to flow forward under the action of gravity to flow out of the liquid outlet.

By providing the baffle plate 66, the gas-liquid separation effect can be further improved, so that the gas and the liquid can be separated more thoroughly.

Optionally, a plurality of flow baffles 66 are vertically disposed in the separation pipe 63, and the plurality of flow baffles 66 are staggered, so that the gas flowing along with the liquid is baffled after being blocked by the plurality of flow baffles 66 on the basis of allowing the liquid to flow, thereby further improving the gas-liquid separation effect.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims

1. The utility model provides a heat pump clothes dryer, includes cylinder (1) and heat pump system, heat pump system is including connecting gradually compressor (2), condenser (3) and evaporimeter (4) that form medium circulation passageway, cylinder (1) evaporimeter (4) with condenser (3) connect gradually and form circulation wind channel, its characterized in that, heat pump system still includes:

and the gas-liquid separator (6) is arranged between the condenser (3) and the evaporator (4) and can carry out gas-liquid separation on the medium flowing out of the condenser (3) at least twice so as to enable the liquid medium to enter the evaporator (4).

2. The heat pump laundry dryer according to claim 1, characterized in that the liquid outlet of the gas-liquid separator (6) communicates with the medium inlet of the evaporator (4), and the gas outlet (65) of the gas-liquid separator (6) communicates with the medium inlet of the compressor (2).

3. The heat pump laundry dryer according to claim 1, characterized in that a capillary tube (5) is arranged between the condenser (3) and the gas-liquid separator (6).

4. The heat pump clothes dryer according to any one of claims 1 to 3, wherein the gas-liquid separator (6) comprises at least two separation chambers (61) communicating in sequence, a gas-liquid mixing inlet and a gas outlet (65) are provided at the top of the separation chambers (61), a liquid outlet is provided at the bottom of the separation chambers (61), and the gas outlet (65) of the separation chambers (61) located upstream of the fluid and the gas-liquid mixing inlet of the separation chambers (61) located downstream of the fluid communicate.

5. The heat pump clothes dryer of claim 4, characterized in that the gas-liquid separator (6) further comprises:

the inlet pipe (62) is inserted into the separation cavity (61) from the gas-liquid mixing inlet, and the length of the inlet pipe (62) extending into the separation cavity (61) is smaller than the depth of the separation cavity (61); and

the separation tube (63) is arranged in the separation cavity (61), the bottom end of the separation tube (63) is communicated with the liquid outlet, the separation tube (63) is sleeved outside the access tube (62), and the length of the separation tube (63) is smaller than the depth of the separation cavity (61).

6. The heat pump clothes dryer of claim 4, characterized in that the gas-liquid separator (6) further comprises:

and one end of the communicating pipe (64) is communicated with the gas-liquid mixing inlet of one of the two adjacent separation chambers (61), and the other end of the communicating pipe is communicated with the gas outlet (65) of the other one of the two adjacent separation chambers (61).

7. The heat pump clothes dryer of claim 5 wherein a baffle plate (66) is disposed within the separator tube (63), the baffle plate (66) being located below the inlet tube (62).

8. The heat pump clothes dryer of claim 7, wherein a plurality of the flow blocking plates (66) are vertically disposed in the separation pipe (63), and the flow blocking plates (66) are alternately disposed.

9. The heat pump clothes dryer of claim 5, wherein a plurality of the introducing pipes (62) are reduced in pipe diameter one by one in a flow direction of the fluid.

10. The heat pump clothes dryer according to any one of claims 1-3, characterized in that the condenser (3) is a micro channel heat exchanger and the evaporator (4) is a copper tube fin evaporator.