Drying equipment

Abstract

The utility model relates to the technical field of clothes processing equipment, in particular to drying equipment, and aims to solve the problem that existing drying equipment is low in drying efficiency. Therefore, the drying equipment comprises a drying cylinder, an air duct and a heat pump system, the two ends of the air duct are communicated with an air inlet and an air return opening of the drying cylinder respectively, an evaporator of the heat pump system is installed in the air duct, and the cross section size of the air duct at the installation position of the evaporator is larger than that of other parts of the air duct. The size of the cross section of the air duct at the mounting position of the evaporator is increased, so that the drying equipment can reduce the flow rate of humid and hot air entering the air duct from the air return port in the drying process, the humid and hot air slowly flows through the evaporator, the contact time of the humid and hot air and the evaporator is prolonged, and the condensation efficiency is improved; and the drying efficiency of the drying equipment is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clothing treatment equipment, and particularly provides a drying device. Background Art

[0002] With the improvement of people's living standards, clothes dryers have gradually become one of the essential household appliances in people's daily lives.

[0003] Most of the existing clothes dryers achieve the effect of condensation drying by installing an evaporator in the drying air duct. The humid and hot air in the drying drum enters the drying air duct and fully contacts the evaporator. The flow rate of the humid and hot air in the drying air duct of the existing clothes dryer is relatively fast, resulting in insufficient contact between the humid and hot air and the evaporator, incomplete condensation of the humid and hot air, and thus reducing the drying efficiency of the drying device.

[0004] Therefore, a new technical solution is needed in this field to solve the above problems. Summary of the Utility Model

[0005] The utility model aims to solve the above technical problems, that is, to solve the problem of low drying efficiency of the existing drying device.

[0006] In a first aspect, the utility model provides a drying device, including a drying drum, an air duct, and a heat pump system. The two ends of the air duct are respectively communicated with the air inlet and the air return port of the drying drum. The evaporator of the heat pump system is installed in the air duct. Among them, the cross-sectional dimension of the air duct at the evaporator installation position is larger than the cross-sectional dimension of the part upstream of the evaporator.

[0007] In the case of adopting the above technical solution, by increasing the cross-sectional dimension of the air duct at the evaporator installation position, during the drying process of the drying device, the flow rate of the humid and hot air entering the air duct from the air return port can be reduced, so that the humid and hot air slowly flows through the evaporator, increasing the contact time between the humid and hot air and the evaporator, improving the condensation efficiency, and thus improving the drying efficiency of the drying device.

[0008] In a preferred technical solution of the above drying device, the air duct includes a return air duct and a first heat exchange air duct. The two ends of the return air duct are respectively communicated with the air return port and one end of the first heat exchange air duct. The cross-sectional dimension of the first heat exchange air duct is larger than that of the return air duct. The evaporator is installed in the first heat exchange air duct.

[0009] In the case of adopting the above technical solution, by setting the air duct as a connected return air duct and a first heat exchange air duct, and setting the cross-sectional dimension of the first heat exchange air duct to be larger than that of the return air duct, the structural form is simple, and the processing and installation are convenient.

[0010] In the preferred technical solution of the above drying device, the drying device further includes a water receiving tray, and the water receiving tray is installed in the first heat exchange air duct and below the evaporator.

[0011] In the case of adopting the above technical solution, the utility model arranges a water receiving tray below the evaporator, so that the condensed water generated by the contact between the humid and hot air and the evaporator can be collected on the water receiving tray, thereby preventing the condensed water from flowing into the air duct.

[0012] In the preferred technical solution of the above drying device, the drying device further includes a drainage pump, one end of the drainage pump is communicated with the drainage port of the water receiving tray, and the other end of the drainage pump is communicated with the water tank of the drying device.

[0013] In the case of adopting the above technical solution, the utility model can pump the condensed water in the water receiving tray into the water tank by arranging the drainage pump, thereby recycling the condensed water and preventing the waste of water resources.

[0014] In the preferred technical solution of the above drying device, the drying device further includes a water level detection member, and the water level detection member is installed in the water receiving tray to detect the water level in the water receiving tray.

[0015] In the case of adopting the above technical solution, the utility model arranges a water level detection member in the water receiving tray, so as to be able to detect the water level in the water receiving tray in real time and prevent the condensed water from overflowing due to too high a water level in the water receiving tray.

[0016] In the preferred technical solution of the above drying device, the air duct further includes a second heat exchange air duct, both ends of the second heat exchange air duct are respectively communicated with the other end of the first heat exchange air duct and the air inlet, the condenser of the heat pump system is installed in the second heat exchange air duct, and the cross-sectional size of the second heat exchange air duct is smaller than that of the first heat exchange air duct.

[0017] In the case of adopting the above technical solution, the utility model installs the condenser in the second heat exchange air duct. After the humid and hot air is fully contacted with the evaporator and becomes dry and cold air, when the dry and cold air flows through the condenser, the condenser can heat the dry and cold air, so that the dry and cold air becomes dry and hot air and enters the drying cylinder, thereby improving the drying efficiency of the drying device. By setting the cross-sectional size of the second heat exchange air duct to be smaller than that of the first heat exchange air duct, the air flow can be accelerated, the wind speed can be increased, and thus the heat exchange efficiency between the condenser and the air can be improved.

[0018] In the preferred technical solution of the above drying device, the cross-sectional size of the second heat exchange air duct is the same as that of the return air duct.

[0019] In the case of adopting the above technical solution, the cross-sectional size of the second heat exchange air duct of the present utility model is set to be the same as that of the return air duct, which is convenient for processing and installation.

[0020] In a preferred technical solution of the above drying equipment, the drying equipment further includes a filtering member, and the filtering member is installed in the air duct and located upstream of the evaporator along the air flow direction.

[0021] In the case of adopting the above technical solution, by installing a filtering member in the air duct, the present utility model can filter out sundries such as lint in the humid and hot air, and avoid the accumulation of sundries such as lint in the air duct, which affects the drying efficiency of the drying equipment.

[0022] In a preferred technical solution of the above drying equipment, the drying equipment further includes an electric heating member, and the electric heating member is installed in the second heat exchange air duct and located downstream of the condenser.

[0023] In the case of adopting the above technical solution, by installing an electric heating member downstream of the condenser, the present utility model can heat the air blown into the drying cylinder, thereby improving the drying efficiency of the drying equipment.

[0024] In a preferred technical solution of the above drying equipment, the drying equipment is a dryer, a washing and drying integrated machine or a clothing care machine. Description of the Drawings

[0025] The following describes the preferred embodiments of the present utility model with reference to the drawings. In the drawings:

[0026] Figure 1 is a schematic structural diagram of the drying equipment of the present utility model.

[0027] List of Reference Numerals:

[0028] 1. Drying cylinder; 11. Air inlet; 12. Air return port;

[0029] 21. Evaporator; 22. Condenser;

[0030] 31. First heat exchange air duct; 32. Second heat exchange air duct; 33. Return air duct;

[0031] 4. Water receiving tray;

[0032] 5. Filtering member;

[0033] 6. Electric heating member. Detailed Embodiments

[0034] The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present utility model and are not intended to limit the protection scope of the present utility model. For example, although the following embodiments are described in conjunction with a clothes dryer, the technical solutions of the present utility model can also be applied to other drying devices, such as a washer-dryer, a garment care machine, etc. Such adjustments and changes to the application object do not deviate from the principle and scope of the present utility model and should all be limited within the protection scope of the present utility model.

[0035] It should be noted that in the description of the present utility model, the terms indicating directions or positional relationships such as "upper", "lower", "top", "bottom", "left", "right", etc. are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0036] In addition, it should also be noted that in the description of the present utility model, unless otherwise clearly specified and defined, the terms "set", "connected", "installed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0037] Based on the problem of low drying efficiency of existing drying devices pointed out in the background art, the present utility model provides a drying device, aiming to increase the cross-sectional size of the air duct at the installation position of the evaporator. During the drying process of the drying device, the flow rate of the humid and hot air entering the air duct from the air return port can be reduced, so that the humid and hot air slowly flows through the evaporator, increasing the contact time between the humid and hot air and the evaporator, improving the condensation efficiency, and further improving the drying efficiency of the drying device.

[0038] Specifically, as Figure 1 shown, the drying device of the present utility model includes a drying cylinder 1, an air duct, and a heat pump system. The two ends of the air duct are respectively communicated with the air inlet 11 and the air return port 12 of the drying cylinder 1. The evaporator 21 of the heat pump system is installed in the air duct. Among them, the cross-sectional size of the air duct at the installation position of the evaporator 21 is larger than the cross-sectional size of the part upstream of the evaporator 21.

[0039] Exemplarily, as Figure 1As shown in the figure, the present utility model provides a clothes dryer. The drying cylinder 1 is used to hold the clothes to be dried. The air duct is arranged below the drying cylinder 1. The left and right ends of the air duct are respectively communicated with the air return port 12 and the air inlet 11 of the drying cylinder 1. The evaporator 21 is installed in the air duct. The evaporator 21 can condense the humid and hot air flowing through it. The humid and hot air in the drying cylinder 1 enters the air duct through the air return port 12. The humid and hot air fully contacts the evaporator 21 in the air duct and is condensed, and then enters the drying cylinder 1 through the air inlet 11, taking away the water vapor generated by the clothes and entering the air duct again, so as to form a circulating air to dry the clothes and achieve the effect of drying the clothes.

[0040] Wherein, the cross-sectional dimension of the air duct at the installation position of the evaporator 21 is larger than the cross-sectional dimension of the upstream part of the evaporator 21. That is to say, the cross-sectional dimension of the air duct becomes larger at the installation position of the evaporator 21. During the drying process of the clothes dryer, the humid and hot air rapidly enters the air duct from the air return port 12. When flowing through the evaporator 21, due to the larger cross-sectional dimension of the air duct at the installation position of the evaporator 21, the flow rate of the humid and hot air also decreases, so that the humid and hot air can slowly flow through the evaporator 21, increasing the contact time between the humid and hot air and the evaporator 21, improving the condensation efficiency, and further improving the drying efficiency of the clothes dryer.

[0041] It should be noted that the present utility model does not limit the structural form of the air duct. For example, those skilled in the art can set the air duct as two air ducts with different cross-sectional areas, or only increase the cross-sectional area of the air duct at the installation position of the evaporator 21, or can also set the air duct as two air ducts with different cross-sectional areas and a connecting air duct connecting the two air ducts, etc. Such adjustments and changes to the specific structural form of the air duct do not deviate from the principle and scope of the present utility model and should be limited within the protection scope of the present utility model.

[0042] Preferably, as Figure 1 shown, the air duct of the present utility model includes an air return duct 33 and a first heat exchange duct 31. The two ends of the air return duct 31 are respectively communicated with the air return port 12 and one end of the first heat exchange duct 31. The cross-sectional dimension of the first heat exchange duct 31 is larger than the cross-sectional dimension of the air return duct 33. The evaporator 21 is installed in the first heat exchange duct 31.

[0043] Exemplarily, as Figure 1 shown, the air return duct 33 of the present utility model is arranged vertically, the first heat exchange duct 31 is arranged horizontally. The top end of the air return duct 33 is communicated with the air return port 12, the bottom end of the air return duct 33 is communicated with the left end of the first heat exchange duct 31. The cross-sectional dimension d1 of the first heat exchange duct 31 is larger than the cross-sectional dimension d2 of the air return duct 33. The evaporator 21 is installed in the first heat exchange duct 31.

[0044] Exemplarily, the left end of the first heat exchange air duct 31 is a reducing pipe, and the return air duct 33 with different cross-sectional sizes and the first heat exchange air duct 31 are communicated through the left end of the first heat exchange air duct 31. The structural form is simple, the processing and installation are convenient, and it is also beneficial to the flow of humid and hot air in the air duct.

[0045] Preferably, as Figure 1 shown, the dryer of the present invention further includes a water receiving tray 4, and the water receiving tray 4 is installed in the first heat exchange air duct 31 and below the evaporator 21.

[0046] Exemplarily, as Figure 1 shown, the water receiving tray 4 of the present invention is installed directly below the evaporator 21. The water receiving tray 4 can collect the condensed water dripping from the evaporator 21, avoiding the condensed water from dripping into the air duct and thus affecting the drying efficiency of the dryer.

[0047] Preferably, the dryer of the present invention further includes a drainage pump (not shown in the figure). One end of the drainage pump is communicated with the drainage port of the water receiving tray 4, and the other end of the drainage pump is communicated with the water tank of the dryer.

[0048] Exemplarily, the two ends of the drainage pump of the present invention are respectively communicated with the drainage port of the water receiving tray 4 and the water tank through drain pipes. The drainage pump can pump the condensed water in the water receiving tray 4 into the water tank, so that the condensed water can be recycled and the waste of water resources is avoided.

[0049] Preferably, the dryer of the present invention further includes a water level detection member (not shown in the figure), and the water level detection member is installed in the water receiving tray 4 to detect the water level in the water receiving tray 4.

[0050] Exemplarily, the water level detection member of the present invention is installed in the water receiving tray 4. When the water level detection member detects that the water level in the water receiving tray 4 reaches the upper limit water level, the water level detection member transmits the water level information to the controller of the dryer by wire communication, and the controller starts the drainage pump to drain the condensed water in the water receiving tray 4, so as to avoid the water level of the condensed water being too high and overflowing the water receiving tray 4.

[0051] Preferably, as Figure 1 shown, the air duct of the present invention further includes a second heat exchange air duct 32. The two ends of the second heat exchange air duct 32 are respectively communicated with the other end of the first heat exchange air duct 31 and the air inlet 11. The condenser 22 of the heat pump system is installed in the second heat exchange air duct 32, and the cross-sectional size of the second heat exchange air duct 32 is smaller than the cross-sectional size of the first heat exchange air duct 31.

[0052] Exemplarily, as Figure 1As shown in the figure, the second heat exchange air duct 32 of the present utility model includes a horizontal section communicating with the other end of the first heat exchange air duct 31 and a vertical section communicating with the air inlet 11. The condenser 22 is installed in the horizontal section of the second heat exchange air duct 32. The cross-sectional dimension d3 of the second heat exchange air duct 32 is smaller than the cross-sectional dimension d1 of the first heat exchange air duct 31.

[0053] Exemplarily, the right end of the first heat exchange air duct 31 is a reducing pipe. The second heat exchange air duct 32 with different cross-sectional dimensions and the first heat exchange air duct 31 are connected through the right end of the first heat exchange air duct 31. The structural form is simple and the processing and installation are convenient. Among them, after the humid and hot air is in full contact with the evaporator 21, it becomes dry and cold air. When the dry and cold air enters the horizontal section of the second heat exchange air duct 32, the wind speed increases, so that the dry and cold air can flow through the condenser 22 rapidly, which can improve the heating efficiency of the condenser 22 for the dry and cold air. Then, the dry and cold air becomes dry and hot air and enters the drying cylinder 1, so that the moisture on the clothes in the drying cylinder 1 can be quickly evaporated into water vapor, improving the drying efficiency of the dryer.

[0054] Preferably, as Figure 1 shown, the cross-sectional dimension of the second heat exchange air duct 32 of the present utility model is the same as the cross-sectional dimension of the return air duct 33.

[0055] That is to say, the cross-sectional dimension d3 of the second heat exchange air duct 32 is equal to the cross-sectional dimension d2 of the return air duct 33. The cross-sectional dimension at the installation position of the evaporator 21 is increased in the air duct, and the cross-sectional dimensions at other positions of the air duct remain unchanged. Such a setting has a simple structure and is convenient for installation.

[0056] Preferably, as Figure 1 shown, the dryer of the present utility model further includes a filtering member 5. The filtering member 5 is installed in the air duct and is located upstream of the evaporator 21 along the air flow direction.

[0057] Exemplarily, as Figure 1 shown, the filtering member 5 of the present utility model is installed in the first air duct 31 and is installed near the air return port 12. The humid and hot air enters the first air duct 31 through the air return port 12. When flowing through the filtering member 5, the filtering member 5 can filter out debris such as lint in the humid and hot air, avoiding the debris such as lint from falling into the first air duct 31 and then accumulating together to affect the ventilation efficiency of the first air duct 31.

[0058] Preferably, as Figure 1 shown, the dryer of the present utility model further includes an electric heating member 6. The electric heating member 6 is installed in the second heat exchange air duct 32 and is located downstream of the condenser 22.

[0059] Exemplarily, as Figure 1As shown, the electric heating component 6 of the present utility model is installed in the second heat exchange air duct 32 and is located downstream of the condenser 22. The electric heating component 6 can heat the air blown into the drying cylinder 1, thereby increasing the temperature of the air in the drying cylinder 1, enabling the moisture on the clothes in the drying cylinder 1 to quickly turn into water vapor, and thus improving the drying efficiency of the dryer.

[0060] It should be noted that the present utility model does not limit the type of the electric heating component 6. For example, those skilled in the art can set the electric heating component 6 as an electric heating wire or an electric heating plate, etc. Such adjustments and changes to the specific type of the electric heating component 7 do not deviate from the principle and scope of the present utility model and should all be limited within the protection scope of the present utility model.

[0061] Those skilled in the art can understand that although some of the embodiments described herein include certain features included in other embodiments rather than other features, the combination of the features of different embodiments means that it is within the scope of this application and forms different embodiments. For example, in the claims of this application, any one of the claimed embodiments can be used in any combination.

[0062] So far, the technical solution of the present utility model has been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present utility model is obviously not limited to these specific embodiments. Without departing from the principle of the present utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present utility model.

Claims

1. A drying device, characterized in that: It includes a drying drum, an air duct and a heat pump system, wherein the two ends of the air duct are respectively connected to the air inlet and the return air outlet of the drying drum, and the evaporator of the heat pump system is installed in the air duct, wherein the cross-sectional dimension of the air duct at the evaporator installation position is larger than the cross-sectional dimension of the upstream part of the evaporator.

2. The drying device according to claim 1, characterized in that: The air duct includes a return air duct and a first heat exchange air duct, the two ends of the return air duct are respectively connected to the return air port and one end of the first heat exchange air duct, the cross-sectional size of the first heat exchange air duct is larger than the cross-sectional size of the return air duct, and the evaporator is installed in the first heat exchange air duct.

3. The drying device according to claim 2, characterized in that: The drying device further includes a water receiving tray, which is installed in the first heat exchange air duct and is located below the evaporator.

4. The drying device according to claim 3, characterized in that: The drying device further comprises a drainage pump, one end of which is communicated with the drainage port of the water receiving tray, and the other end of which is communicated with the water tank of the drying device.

5. The drying device according to claim 4, characterized in that: The drying device further includes a water level detection component installed in the water receiving tray to detect the water level in the water receiving tray.

6. The drying device according to claim 2, characterized in that: The air duct also includes a second heat exchange air duct, both ends of which are respectively connected to the other end of the first heat exchange air duct and the air inlet, and the condenser of the heat pump system is installed in the second heat exchange air duct, and the cross-sectional size of the second heat exchange air duct is smaller than the cross-sectional size of the first heat exchange air duct.

7. The drying device according to claim 6, characterized in that: The cross-sectional dimension of the second heat exchange air duct is the same as the cross-sectional dimension of the return air duct.

8. The drying device according to claim 1, characterized in that: The drying device further includes a filter component installed in the air duct and located upstream of the evaporator along the air flow direction.

9. The drying device according to claim 6, characterized in that: The drying device further includes an electric heating component installed in the second heat exchange air duct and located downstream of the condenser.

10. The drying device according to any one of claims 1 to 9, characterized in that: The drying device is a clothes dryer, a washer-dryer or a clothing care machine.

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