CN117257200A - Moisture drying device and dish washer - Google Patents

Abstract

The invention belongs to the technical field of kitchen appliances, and discloses a wet gas drying device and a dish washer. The wet gas drying device comprises a runner shell and a fan; the flow channel shell is provided with a first inlet, a second inlet, an exhaust port and a backflow port, wherein the first inlet and the backflow port are both used for being communicated with a cavity to be dried storing moisture, and the second inlet is used for being communicated with the outside of the flow channel shell; the flow channel is provided with a circulation heating branch and a mixing outer branch, wherein the circulation heating branch and the mixing outer branch are respectively communicated with the first inlet, the circulation heating branch is communicated with the backflow port, and the mixing outer branch is communicated with the exhaust port. The fan comprises an impeller arranged in the flow channel, the circumferential air outlet of the impeller is provided with a second inlet which is communicated with an air inlet of the impeller. The wet gas drying device can improve the drying efficiency of the inner container; the humidity of the discharged mixed air flow is low, so that the cabinet is prevented from being wetted.

Description

Moisture drying device and dish washer

Technical Field

The invention relates to the technical field of kitchen appliances, in particular to a wet gas drying device and a dish washer.

Background

The temperature in the inner container is high after the dish washer works, and the humidity is high, and the dish washer needs to be dried and cooled in time so as to avoid residual water stains on tableware and avoid burn after a user opens a machine door.

The existing dish-washing machine generally adopts the technology of residual temperature drying and automatic door opening drying. The residual temperature drying technology is most common, and mainly uses the residual temperature after rinsing to dry tableware by standing for a period of time, so that the method has the advantages of low cost and no noise, but has poor drying effect and long time consumption; the automatic door opening and closing technology utilizes strong convection heat exchange in large space to directly discharge water vapor from a door, has good drying effect, low energy consumption and no noise, but easily wets a cabinet, and simultaneously dust, bacteria and insects easily enter the inner container.

Part dish washer is taken out the wet and hot gas in the inner bag, and reinjected in the inner bag after condensing separation steam, realizes drying, because the gaseous humidity is big in the inner bag, leads to condensation time long, condensation effect poor, finally influences drying efficiency.

Disclosure of Invention

The invention aims to provide a wet gas drying device and a dish washing machine, which can improve the drying effect, reduce the energy consumption and shorten the drying time.

To achieve the purpose, the invention adopts the following technical scheme:

a moisture drying device comprises a runner shell and a fan;

the flow channel shell is provided with a first inlet, a second inlet, an exhaust port and a backflow port, wherein the first inlet and the backflow port are both used for being communicated with a cavity to be dried storing moisture, and the second inlet is used for being communicated with the outside of the flow channel shell;

A flow passage is formed in the flow passage shell, a circulation heating branch and a mixing outer branch which are respectively communicated with the first inlet are formed in the flow passage, the circulation heating branch is communicated with the backflow port, and the mixing outer branch is communicated with the exhaust port;

the fan comprises an impeller arranged in the flow channel, the circumferential air outlet of the impeller is provided with a second inlet which is communicated with an air inlet of the impeller.

As an alternative to the above-mentioned wet gas drying apparatus, the impeller is disposed at a junction position of the circulation heating branch and the mixing and discharging branch.

As an alternative of the above moisture drying device, the flow channel includes a main flow channel, an outer flow channel, and a return flow channel, the main flow channel and the outer flow channel form the mixing outer flow channel, the main flow channel and the return flow channel form the circulation heating channel, a communication boundary between the outer flow channel and the main flow channel is a first boundary, and the second inlet is disposed near the first boundary;

and/or the first boundary coincides with a part of the circumferential edge of the impeller;

and/or at least part of the second inlet is opposite to the axial end face of the impeller;

And/or the second inlet extends along the first boundary or a portion of the second inlet extends along the first boundary;

and/or, the second inlet is an arc-shaped hole, and the arc-shaped hole extends along the circumferential direction of the impeller.

As an alternative to the above-mentioned wet gas drying apparatus, the outer flow path and the return flow path each extend from the main flow path in a direction away from the main flow path;

or, the outer drainage channel surrounds at least a portion of the total flow channel.

As an alternative of the above moisture drying device, the flow channel includes an inlet flow channel and a mixing flow channel, the first inlet is communicated with the inlet flow channel, the inlet flow channel and the mixing flow channel are arranged in a stacked manner along an axial direction of the fan and are communicated through a communication port, the impeller is arranged in the mixing flow channel, an axial end face of the impeller is opposite to the communication port, and the second inlet, the exhaust port and the return port are communicated with the mixing flow channel.

As an alternative to the above-mentioned moisture drying apparatus, the flow path housing includes:

the shell is internally provided with a runner cavity, an outer row runner and a backflow runner, the outer row runner and the backflow runner are both communicated with the runner cavity, the outer row runner is communicated with the exhaust port, and the backflow runner is communicated with the exhaust port;

The volute is arranged in the flow passage cavity, the communication port is formed in the volute, one side of the volute and the shell enclose an inlet flow passage, the other opposite side of the volute and the shell enclose a mixing flow passage, and the communication port is communicated with the inlet flow passage and the mixing flow passage.

As an alternative scheme of the above moisture drying device, the housing comprises a first shell and a second shell which are connected, wherein a supporting rib is arranged in the middle of the first shell, and the supporting rib is arranged at intervals with the second shell;

the spiral case includes bottom plate and first curb plate, be provided with on the bottom plate the intercommunication mouth, the bottom plate overlap joint in on the supporting rib, first curb plate with the bottom plate is connected and with the second casing butt, the spiral case with the second casing encloses into the mixing runner.

As an alternative of the above moisture drying device, the support rib includes a first rib plate and a second rib plate, the first rib plate extends along a communication boundary between the backflow channel and the channel cavity, the second rib plate extends along a communication boundary between the outer-row channel and the channel cavity, a gap between the first rib plate and the second housing communicates the mixing channel and the backflow channel, and the second rib plate communicates the mixing channel and the outer-row channel.

As an alternative of the above moisture drying device, a water baffle is disposed in the housing, the water baffle is disposed at one end of the backflow channel and is communicated with the mixing channel, the water baffle and the inner wall of the housing enclose a water collecting tank, a drainage channel communicated with the water collecting tank is disposed on the housing, and the drainage channel is located between the bottom plate and the first housing.

As an alternative of the above moisture drying device, the fan further includes a motor, the motor is in driving connection with the impeller, the motor is disposed in the runner shell, and the motor is located inside or outside the runner shell.

As an alternative to the above-mentioned moisture drying apparatus, the flow path housing includes:

the shell is internally provided with the flow channel, and fan mounting holes are formed in the shell;

the installation cover is connected with the shell and shields the installation hole, the fan is arranged on the installation cover, and the installation cover is provided with the second inlet.

As an alternative of the above moisture drying device, the outer wall of the mounting cover is convexly provided with a flow guiding rib, and the flow guiding rib is arranged between the motor and the second inlet.

As an alternative to the above-mentioned wet gas drying apparatus, the wet gas drying apparatus further comprises a heating assembly, at least part of the heating assembly is located in the circulation heating branch, and the return port is located downstream of the heating assembly in the flow direction of the air flow.

As an alternative to the above-mentioned wet gas drying apparatus, a water return groove is formed in the flow channel case, and the water return groove is disposed around at least the bottom of the first inlet.

The dishwasher comprises an inner container and the moisture drying device, wherein the first inlet and the backflow port are communicated with the inner container.

The invention has the beneficial effects that:

in the wet gas drying device provided by the invention, the first air flow is wet air in the liner, and the second air flow is dry air outside the runner shell. After the wet air in the liner is introduced into the runner, at least part of the wet air and the dry air are mixed to form a mixed air flow, the humidity of the mixed air flow is lower than that of the wet air, the mixed air flow is drier, and part of the mixed air flow is discharged out of the runner shell through the exhaust port, so that the mildewing and the wetting of the cabinet can be avoided; the residual gas returns to the inner container through the backflow port, and the residual gas can be residual wet air or mixed air flow. When the residual gas is residual wet air, the amount of the wet air flowing back into the inner container is reduced, so that the humidity in the inner container can be reduced, and the drying efficiency is accelerated; when the air flow flowing back into the inner container is the mixed air flow, the humidity of the mixed air flow is lower, and after the mixed air flow is mixed with the air flow in the inner container, the humidity of the air in the inner container can be quickly reduced, and the drying effect of the inner container is improved.

The dish washer provided by the invention comprises the moisture drying device, so that the drying efficiency of the inner container can be improved, the cost is reduced, and the cabinet cannot be affected with moisture.

Drawings

Fig. 1 is a schematic structural diagram of a moisture drying device according to a first embodiment of the present invention;

fig. 2 is a schematic diagram of a moisture drying device according to a first embodiment of the present invention;

fig. 3 is a schematic structural view of the moisture drying device according to the first embodiment of the present invention when the second housing is not assembled;

fig. 4 is a front view of a moisture drying apparatus according to an embodiment of the present invention without the second housing;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;

FIG. 6 is a cross-sectional view taken along B-B in FIG. 4;

FIG. 7 is a schematic view showing a part of a moisture drying apparatus according to an embodiment of the present invention;

FIG. 8 is a schematic view of a first embodiment of a moisture dryer without a second housing and a blower;

FIG. 9 is a schematic diagram II of a moisture drying apparatus according to an embodiment of the present invention without the second housing and the blower;

fig. 10 is a schematic view of a moisture drying apparatus according to a fourth embodiment of the present invention, in which the second housing and the blower are not assembled;

fig. 11 is a cross-sectional view of a moisture drying apparatus provided in accordance with a fourth embodiment of the present invention;

FIG. 12 is a cross-sectional view of a blower within a flow housing provided in accordance with a fifth embodiment of the present invention;

FIG. 13 is a schematic view of a moisture drying apparatus according to a sixth embodiment of the present invention;

fig. 14 is a schematic structural view of a first housing according to a seventh embodiment of the present invention;

fig. 15 is a cross-sectional view of a moisture drying apparatus according to a seventh embodiment of the present invention.

In the figure:

10. a flow passage housing; 101. a main flow channel; 1011. an inlet flow passage; 1012. a mixing runner; 102. a return flow path; 103. an outer flow path; 104. a water return tank; 105. an exhaust port; 11. a housing; 111. a first housing; 1111. a first inlet; 1112. a return port; 1113. a support rib; 1114. a support column; 1115. a notch; 1116. a window; 1117. a water baffle; 1118. a drainage flow passage; 112. a second housing; 12. a mounting cover; 121. a second inlet; 122. a flow guiding rib; 13. a volute; 131. a bottom plate; 1311. a communication port; 132. a first side plate; 133. a second side plate; 134. a top flange; 14. a tank body; 20. a blower; 21. a motor; 22. an impeller; 30. a heating assembly; 31. a fixing seat; 32. and a heating member.

Detailed Description

The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

Example 1

The embodiment provides a moisture drying device for cooling and drying moist hot air in a cavity to be dried. The wet-air drying device can be used in a dish washer, and the embodiment is described by taking a cavity to be dried as an inner container of the dish washer as an example.

As shown in fig. 1 and 2, the moisture drying device includes a flow path housing 10 and a blower 20, a flow path is formed in the flow path housing 10, a first inlet 1111, a second inlet 121, an exhaust port 105 and a return port 1112 are provided on the flow path housing 10, the first inlet 1111 and the return port 1112 are both used to communicate with a cavity to be dried storing moisture, and the second inlet 121 and the exhaust port 105 are both communicated with the outside of the flow path housing 10 and the flow path. The fan 20 is arranged in the flow channel, and the fan 20 is used for driving airflow to flow according to a preset track. The fan 20 can drive the first air flow in the liner to enter the flow passage through the first inlet 1111, and drive the second air flow outside the flow passage shell 10 to enter the flow passage through the second inlet 121. A circulation heating branch and a mixing external discharge branch are formed in the flow channel, wherein the circulation heating branch is communicated with the reflux port 1112, and the mixing external discharge branch is communicated with the exhaust port 105. At least a portion of the first gas stream will mix with the second gas stream in the flow channel to form a mixed gas stream. Part of the mixed air flow is discharged through the exhaust port 105 under the drive of the fan 20, and part of the first air flow or the rest of the mixed air flow is returned to the inner container through the return port 1112.

In this embodiment, the first air flow is wet air in the liner, and the second air flow is dry air outside the runner casing 10. After the wet air in the liner is introduced into the runner, at least part of the wet air and the dry air are mixed to form mixed air flow, the humidity of the mixed air flow is lower than that of the wet air, the mixed air flow is drier, and part of the mixed air flow is discharged out of the runner shell 10 through the exhaust port 105, so that the mildewing and the wetting of the cabinet can be avoided; the residual gas, which may be residual wet air or mixed gas, is returned to the liner through the return port 1112. When the residual gas is residual wet air, the amount of the wet air flowing back into the inner container is reduced, so that the humidity in the inner container can be reduced, and the drying efficiency is accelerated; when the air flow flowing back into the inner container is the mixed air flow, the humidity of the mixed air flow is lower, and after the mixed air flow is mixed with the air flow in the inner container, the humidity of the air in the inner container can be quickly reduced, and the drying effect of the inner container is improved.

As shown in fig. 3, the flow path includes a main flow path 101, an outer flow path 103, and a return flow path 102, a first inlet 1111 communicates with the main flow path 101, the outer flow path 103 communicates with the main flow path 101 and an exhaust port 105, and the return flow path 102 communicates with the main flow path 101 and a return port 1112. The main flow channel 101 and the outer discharge flow channel 103 form a mixing outer discharge branch, and the main flow channel 101 and the return flow channel 102 form a circulation heating branch. The fan 20 comprises an impeller 22 arranged in the main flow channel 101, the circumferential air outlet of the impeller 22 is at least partially opposite to the axial end surface of the impeller 22, and the second inlet 121 is at least partially opposite to the axial end surface of the impeller 22. After the first air flow enters the main flow channel 101 from the first inlet 1111, the air enters through the axial end face of the impeller 22, and the air is discharged from the periphery of the impeller 22, at least part of the second inlet 121 is opposite to the edge of the axial end face of the impeller 22, so that the second air flow outside the flow channel shell 10 can enter the main flow channel 101 from the second inlet 121 under the action of the impeller 22, the air in the main flow channel 101 can be ensured to enter the air, and the air in the main flow channel 101 can not be discharged out of the flow channel shell 10 from the second inlet 121, thereby ensuring that the air flow flows in the mode.

In order to ensure that the mixed air flow after mixing can enter the outer flow channel 103 or can enter the outer flow channel 103 and the backflow flow channel 102 respectively, the impeller 22 is arranged at the junction of the main flow channel 101, the outer flow channel 103 and the backflow flow channel 102 so as to shorten the distance between the impeller 22 and the outer flow channel 103 and the backflow flow channel 102, so that the mixed air flow mixed at the impeller 22 can enter the outer flow channel 103 or can be shunted into the outer flow channel 103 and the backflow flow channel 102.

For convenience of description, the communication boundary between the outer discharge flow channel 103 and the main flow channel 101 is a first boundary, and the communication boundary between the return flow channel 102 and the main flow channel 101 is a second boundary. As shown in fig. 3, the second inlet 121 is disposed near the first boundary, so that the mixing position of the first air flow and the second air flow is near the outer discharge channel 103, and the mixed air flow can directly enter the outer discharge channel 103 under the driving of the fan 20, so as to be conveniently discharged.

To direct the mixed gas flow into the outer discharge flow channel 103, the first boundary coincides with a portion of the circumferential edge of the impeller 22. This arrangement allows the driven air flow to directly enter the outer discharge flow passage 103 after the peripheral air outlet of the impeller 22, and reduces the flow resistance of the mixed air flow.

As shown in fig. 4 and 5, the second inlet 121 is an arc-shaped hole extending along the circumference of the impeller 22 to increase the flow rate of the second air stream and reduce the humidity of the mixed air stream.

The second inlet 121 extends along the first boundary such that the first air flow and the second air flow are mixed at the first boundary, and the mixed air flow after mixing substantially enters the outer flow passage 103 under the driving of the blower 20; the first air flow which is not mixed with the second air flow enters the return flow passage 102 under the driving of the blower 20.

In other embodiments, a portion of the second inlets 121 extends along the first boundary, and the remaining portion of the second inlets 121 may be located at the second boundary, or may be located at other positions of the main flow channel 101 than the first boundary and the second boundary, so that the first air flow flowing into the return flow channel 102 and the second air flow may be mixed, and the air flow entering the return flow channel 102 is ensured to be a mixed air flow.

Illustratively, the second inlet 121 extends forward from the first boundary in the direction of rotation of the impeller 22 such that a portion of the first air flow, after mixing with the second air flow, is thoroughly mixed about the circumferential rotation of the impeller 22 a distance before entering the return flow path 102.

As shown in fig. 3-5, the first inlet 1111 is offset from the axial end surface of the impeller 22, i.e., the first inlet 1111 is offset from the air inlet of the impeller 22. The arrangement ensures that the first air flow with larger humidity flows in the main flow channel 101 for a certain path and then passes through the air inlet of the impeller 22, which is beneficial to condensing and separating moisture in the first air flow, thereby reducing the humidity of the first air flow contacted with the impeller 22 and playing a role of protecting the impeller 22.

As shown in fig. 3, the main flow path 101 includes an inlet flow path 1011 and a mixing flow path 1012, the first inlet 1111 communicates with the inlet flow path 1011, the inlet flow path 1011 and the mixing flow path 1012 are arranged in a stacked manner along the axial direction of the fan 20 and communicate with each other through a communication port 1311, the impeller 22 is arranged in the mixing flow path 1012, the axial end face of the impeller 22 is opposite to the communication port 1311, and the second inlet 121 is connected to the mixing flow path 1012 through the outer flow path 103 and the return flow path 102. As shown in fig. 5 and 6, the first air flows through the first inlet 1111 into the inlet flow passage 1011 and through the communication port 1311 into the mixing flow passage 1012; at the same time, the second air flow enters the mixing channel 1012 through the second inlet 121. Part of the first air flow and the second air flow are mixed and then enter the outer discharge flow channel 103, and the rest of the first air flow flows into the backflow flow channel 102 in the mixing flow channel 1012 and returns to the inner container through the backflow port 1112.

As shown in fig. 3 and 4, the width of the mixing flow channel 1012 gradually increases along the flowing direction of the air flow, the air flow resistance is reduced, the air flow speed is reduced, the time of the air flow in the mixing flow channel 1012 is prolonged, and the condensation of moisture in the air flow is facilitated.

In this embodiment, one end of each of the outer flow channel 103 and the return flow channel 102 is communicated with the mixing flow channel 1012, and the other end extends away from the mixing flow channel 1012. Specifically, the mixing channel 1012 is disposed above the outer row channel 103 and the backflow channel 102, and the outer row channel 103 and the backflow channel 102 extend from top to bottom.

As shown in fig. 4 and 5, the flow path housing 10 includes a housing 11 and a mounting cover 12, a fan mounting hole is provided on the housing 11, the mounting cover 12 is connected with the housing 11 and shields the mounting hole, the fan 20 is provided on the mounting cover 12 and extends into the flow path through the fan mounting hole, and a second inlet 121 is provided on the mounting cover 12. Through setting up installation lid 12 and fan mounting hole, installation lid 12 can be by the outside dismouting of shell 11 to realize fan 20's dismouting, make things convenient for fan 20's maintenance, convenient operation.

The fan 20 includes a motor 21 and an impeller 22, the motor 21 is disposed on a surface of the installation cover 12 facing the inside of the flow channel, and the motor 21 is in driving connection with the impeller 22 to drive the impeller 22 to rotate. The fan 20 is completely positioned in the runner shell 10, and the motor 21 and the impeller 22 can be protected through the runner shell 10, so that the fan 20 is prevented from being knocked and damaged.

As shown in fig. 1, 4 and 5, the runner housing 10 includes a housing 11 and a scroll casing 13, a runner chamber, an outer row of runners 103 and a return runner 102 are formed in the housing 11, and the outer row of runners 103 and the return runner 102 are both communicated with the runner chamber; the spiral case 13 is arranged in the flow channel cavity, a communication port 1311 is arranged on the spiral case 13, one side of the spiral case 13 and the inner wall of the flow channel cavity enclose an inlet flow channel 1011, the opposite side of the spiral case 13 and the inner wall of the flow channel cavity enclose a mixing flow channel 1012, and the communication port 1311 is communicated with the inlet flow channel 1011 and the mixing flow channel 1012. Through setting up spiral case 13 for the runner chamber forms bilayer structure, in order to guarantee that intercommunication mouth 1311 can be just right with the axial terminal surface of fan 20, in order to realize the axial terminal surface air inlet of fan 20, outer peripheral face air-out.

In the present embodiment, the housing 11 includes a first casing 111 and a second casing 112, and the first casing 111 and the second casing 112 are assembled in the axial direction of the blower 20. The housing 11 is formed by the first housing 111 and the second housing 112, and thus the scroll casing 13 and the like can be easily installed in the housing. Wherein the first inlet 1111 and the return 1112 are both provided on the first housing 111.

Since the first inlet 1111 is disposed offset from the axial end surface of the fan 20, i.e., the first inlet 1111 is disposed offset from the communication port 1311 of the scroll casing 13, the scroll casing 13 needs to be spaced from the first housing 111 to communicate the first inlet 1111 and the communication port 1311. In order to fix the volute casing 13 conveniently, as shown in fig. 7, a supporting rib 1113 is provided at the middle part of the first casing 111, the supporting rib 1113 is spaced from the second casing 112, and the supporting rib 1113 extends along a first boundary of the outer row of flow channels 103 connected with the main flow channel 101 and a second boundary of the return flow channel 102 connected with the main flow channel 101 in sequence; as shown in fig. 8 and 9, the volute 13 includes a bottom plate 131 and a first side plate 132, the bottom plate 131 is provided with a communication port 1311, the bottom plate 131 is lapped on a supporting rib 1113, the first side plate 132 is connected with the bottom plate 131 and is abutted with the second housing 112, and the volute 13 and the second housing 112 enclose a mixing flow channel 1012.

Specifically, the support rib 1113 includes a first rib extending along a communication boundary between the return flow passage 102 and the flow passage chamber, and a second rib extending along a communication boundary between the outer flow passage 103 and the flow passage chamber. And the gap between the first rib plate and the second shell 112 can be communicated with the mixing runner 1012 and the backflow runner 102, and the gap between the second rib plate and the second shell 112 can be communicated with the mixing runner 1012 and the outer drainage runner 103. The flow channel can be divided into two branches on the basis of meeting the requirement of installing the fan 20 by arranging the supporting ribs 1113 so as to form a circulating heating branch and a mixed discharging branch.

By providing the support ribs 1113, on the one hand, the scroll casing 13 can be supported, so that the scroll casing 13 and the first casing 111 are arranged at intervals, and on the other hand, the inlet flow passage 1011, the outer flow passage 103 and the return flow passage 102 can be blocked by the support ribs 1113, so that the first air flow in the inlet flow passage 1011 is prevented from directly entering the outer flow passage 103 and the return flow passage 102. By providing the first side plate 132, the first side plate 132 is in contact with the second housing 112, and the inlet flow passage 1011 and the mixing flow passage 1012 can be blocked, so that the first air flow in the inlet flow passage 1011 can enter the mixing flow passage 1012 only through the communication port 1311. Here, the edges of the bottom plate 131 at the first and second boundaries are not connected to the first side plate 132, so as to ensure that the mixing channels 1012 can communicate with the outer flow channels 103 and the return flow channels 102, respectively.

To improve the stability of the volute 13, the volute 13 further includes a second side plate 133, where the second side plate 133 is connected to the bottom plate 131, and the second side plate 133 is located on a side of the support rib 1113 facing away from the main flow channel 101. By arranging the second side plate 133, the lap joint effect of the bottom plate 131 and the supporting ribs 1113 can be ensured, the situation that the bottom plate 131 and the supporting ribs 1113 are separated due to the fact that the position of the volute 13 moves is avoided, and the stability of the volute 13 is improved.

As shown in fig. 7 and 9, the scroll case 13 further includes a top flange 134, the top flange 134 is connected to the first side plate 132, a notch 1115 is provided in the first housing 111, and the top flange 134 is inserted into the notch 1115. After the top flange 134 is inserted into the notch 1115, on one hand, the volute 13 can be supported by the abutting of the notch 1115 and the top flange 134, so that the stability of the volute 13 is improved; on the other hand, the position deflection of the volute 13 can be avoided, and after the first housing 111 and the second housing 112 are assembled, the top flange 134 is clamped between the first housing 111 and the second housing 112, so that the position stability of the volute 13 is further improved.

The first housing 111 is further provided with a support column 1114, and the support column 1114 is used for supporting the scroll casing 13 to ensure that a gap is formed between the scroll casing 13 and the first housing 111 to ensure that the first inlet 1111 communicates with the communication port 1311.

In order to improve the drying efficiency of the liner, the heating element 30 is disposed in the backflow channel 102, and the backflow port 1112 is located downstream of the heating element 30 along the airflow flowing direction, so that the airflow entering the backflow channel 102 is heated by the heating element 30 and then returns to the liner through the backflow port 1112. The air flow entering the inner container from the reflux port 1112 is dry high-temperature air flow, so that the moisture in the inner container can be dried, and the drying efficiency is improved.

Alternatively, the heating assembly 30 may be a PTC heater or a heating wire. The PTC heating element is composed of a PTC ceramic heating element and an aluminum tube, and has the advantages of small thermal resistance and high heat exchange efficiency. The heating wire is generally made of iron-chromium-aluminum or nickel-chromium electrothermal alloy, and has the advantages of high heating temperature, long service life and low cost.

In order to ensure that the air flow entering the reflow flow passage 102 is heated by the heating component 30 and then enters the liner through the reflow opening 1112, the reflow flow passage 102 is divided into a reflow front section and a reflow rear section by the heating component 30, and the heating component 30 is positioned at the joint of the reflow front section and the reflow rear section and is communicated with the reflow front section and the reflow rear section. The air flow in the reflow heating front section can only enter the reflow heating rear section after passing through the heating component 30, so as to ensure the heating effect of the heating component 30 on the reflow air flow.

In this embodiment, the heating assembly 30 is a cuboid, one set of surfaces of the heating assembly 30 opposite to each other are an air inlet surface and an air outlet surface, and the other four side surfaces of the heating assembly 30 are all abutted against the inner wall of the backflow channel 102, so as to ensure that the air flow entering the backflow channel 102 passes through the heating assembly 30.

Alternatively, the heating assembly 30 may include a heating body for generating heat and a plurality of fins provided at intervals on the heating body to heat the air flow by conduction of the heat generated by the heating body; the gaps between two adjacent fins are for the passage of air flow.

In this embodiment, the heating element 30 is disposed in the runner housing 10, and the housing 11 is attached and detached to and from the heating element 30. The heating component 30 is wrapped by the shell 11, so that the heating component 30 can be prevented from being contacted with other structures, and the heating component 30 is protected.

In order to prevent the washing water in the inner container from entering the flow passage through the first inlet 1111 during the washing process, a water return groove 104 is formed in the flow passage housing 10, and the water return groove 104 is disposed around at least the bottom of the first inlet 1111. The water return tank 104 can block the washing water, so that the washing water is gathered in the water return tank 104, and the washing water can flow back into the liner through the first inlet 1111, so that the washing water is prevented from contacting the fan 20.

In addition, the water return groove 104 can guide the first air flow, so that the first air flow flows upwards along the inner wall of the water return groove 104, on one hand, the condensation of the moisture in the first air flow on the inner wall of the water return groove 104 can be facilitated, and on the other hand, the flow path of the first air flow can be prolonged, and the moisture in the first air flow can be cooled and separated out. The condensed water drops into the water return tank 104, and can flow back into the liner to be discharged.

In this embodiment, the lowest point of the water return tank 104 is flush with the lowest point of the first inlet 1111, so that the water in the water return tank 104 is completely returned to the liner.

The runner housing 10 further includes a tank 14, where the tank 14 is covered on an inner wall of the first housing 111, so that the tank 14 and the first housing 111 enclose a water return tank 104.

In order to prevent impurities in the liner from entering the runner casing 10, the first inlet 1111 and the reflux port 1112 are both provided with grating pieces for filtering the impurities, so as to prevent the inside of the runner casing 10 from being blocked or polluted, and ensure the use sanitation.

Alternatively, the grille member may be a cover body structure, which is connected to the first housing 11 through a screw pair, so as to facilitate disassembly and replacement.

Example two

The present embodiment provides a moisture drying apparatus which is further improved on the basis of the first embodiment.

In this embodiment, at least part of the outer exhaust flow channels 103 are bent and extended, so as to prolong the flow stroke of the air flow in the outer exhaust flow channels 103 and improve the gas-liquid separation effect; in addition, the outer drainage channel 103 is bent and extended, so that the number of times of turning of the airflow in the flowing process is increased, moisture carried in the airflow can be condensed on the inner wall of the outer drainage channel 103, and the gas-liquid separation effect is improved.

The bottom of the runner housing 10 is further provided with a drain port communicating with the outer drain runner 103, the drain port being lower than the drain port 105, and for facilitating drainage of condensed water through the drain port. Optionally, the drain outlet can directly drain the condensed water out of the dish washer, and also can be communicated with the inner container so as to drain the condensed water through the inner container.

The outer row of runner 103 includes circuitous section, and circuitous section is including two at least tributary runner sections that connect gradually, and the direction of flow of air current is the contained angle setting in two adjacent tributary runner sections to make the air current flow to the in-process of next tributary runner section by current tributary runner section, the air current will contact and then change flow direction in the inner wall of runner. In the process, the moisture in the air flow is easy to condense and gather on the inner wall of the flow channel, which is beneficial to promoting the separation of air and liquid.

Alternatively, the branch flow channel sections may extend along a straight line, and two adjacent branch flow channel sections are vertical, i.e. a horizontal flow channel section and a vertical flow channel section, respectively. The flow directions of the air flows in the two adjacent horizontal flow channel sections are opposite, so that the plurality of horizontal flow channel sections are vertically arranged, and the size of the detour section in the horizontal direction is reduced.

In other embodiments, the flow direction of the air flow in two adjacent horizontal flow channel sections can be the same, and the tortuous flow of the air flow in the detour sections is not affected.

In other embodiments, the branch channel section may extend in a curved manner, and may also extend the length of the detour section, so as to facilitate moisture condensation.

In other embodiments, at least part of the branch channel sections can also extend obliquely relative to the horizontal direction, the detour section comprises the branch channel sections extending obliquely, and the detour section can realize the detour flow of the air flow in the detour section by matching with the branch channel sections extending horizontally or the branch channel sections extending vertically.

Example III

The present embodiment provides a moisture drying apparatus which is further improved on the basis of the first or second embodiment.

In this embodiment, the mixed air in the outer flow channel 103 can be further condensed by heat exchange to reduce the humidity. Specifically, cooling water may be introduced into the outward flow path 103, and the cooling water exchanges heat with the air flow to separate moisture in the air flow, thereby realizing drying. The runner housing 10 is further provided with a cooling water inlet for introducing cooling water and a cooling water outlet for discharging cooling water, both of which are communicated with the outer discharge flow channel 103.

The cooling water flows in the outer flow channel 103, and condenses water vapor in the air flow through heat exchange with the passing air flow, and the condensed water drops, so that the purpose of drying the air flow is realized. The cooling water flows and has good heat exchange effect with the air flow, thereby being beneficial to improving the drying efficiency of the air flow.

In some embodiments, heat may also be exchanged with the airflow by providing a heat exchange assembly within the outer flow channel 103. The heat exchange assembly can comprise a heat exchanger, a heat exchange medium is filled in the heat exchanger, and when the air flow passes through the heat exchanger, the air flow and the heat exchange medium conduct heat transfer so as to reduce the temperature of the air flow, so that moisture carried in the air flow is condensed, and gas-liquid separation is realized. Wherein the heat exchange medium can be tap water.

Alternatively, the heat exchanger may also be a tube heat exchanger, a coil heat exchanger, a fin tube heat exchanger, or a plate heat exchanger.

In some embodiments, the heat exchange assembly may include a water tank with tap water disposed therein, at least a portion of the water tank being disposed within the outer drain 103, and the air flow is dried by exchanging heat with the air flow from the water tank.

In some embodiments, the heat exchange assembly may include a semiconductor refrigeration sheet having a cold end in contact with the air flow in the outer drain 103 and exchanging heat to absorb heat from the air flow and condense moisture carried in the air flow.

In some embodiments, the heat exchange assembly may include a heat exchanger disposed in the outer drain 103 and a water tank disposed outside the flow shell 10, the heat exchanger and the water tank forming a heat exchange loop for a heat exchange medium that circulates between the heat exchanger and the water tank to increase heat exchange efficiency for the air flow.

In some embodiments, the heat exchange assembly includes a heat exchanger, a semiconductor refrigeration sheet, and a water tank, at least a portion of the heat exchanger is disposed in the outer row of flow channels 103, the water tank and the semiconductor refrigeration sheet are disposed outside the flow channel shell 10, the water tank forms a first heat exchange loop with a hot end of the semiconductor refrigeration sheet through a first pipe, and a cold end of the semiconductor refrigeration sheet forms a second heat exchange loop with the heat exchanger. The water tank absorbs heat emitted by the hot end of the semiconductor refrigeration piece to cool the semiconductor refrigeration piece; the cold end of the semiconductor refrigeration sheet exchanges heat with the heat exchanger to cool the heat exchange medium in the heat exchanger, thereby ensuring the heat exchange efficiency of the heat exchange medium and the air flow in the outer discharge flow channel 103.

Further, part of the second heat exchange loop is located at one end of the return flow channel 102 close to the mixing flow channel 1012, and the air flow entering the return flow channel 102 is preheated through the second heat exchange loop, so that the heat exchange effect of the heat exchanger and the air flow is improved.

Example IV

The present embodiment provides a moisture drying apparatus which is further improved on the basis of the above-described embodiments.

As shown in fig. 10, the outer flow channel 103 surrounds at least part of the mixing flow channel 1012 and at least part of the backflow flow channel 102, so that the mixed air flow with lower temperature in the outer flow channel 103 exchanges heat with the air flow in the mixing flow channel 1012 and the backflow flow channel 102, the temperature of the air flow in the mixing flow channel 1012 and the backflow flow channel 102 is reduced, and moisture in the air flow is condensed and separated, so that the humidity of the air flow returned to the liner is further reduced, and the drying efficiency of the liner is accelerated.

As shown in fig. 11, in order to prevent condensed water from entering the backflow channel 102, a water baffle 1117 is disposed in the housing 11, the water baffle 1117 is disposed at one end of the backflow channel 102, which is communicated with the mixing channel 1012, one end of the water baffle 1117 is connected with the housing 11, and the other end extends toward the center of the backflow channel 102, so that the water collecting tank is surrounded by the water baffle 1117 and the inner wall of the housing 11, and condensed water in the mixing channel 1012 can enter the water collecting tank along the inner wall of the mixing channel 1012. The housing 11 is provided with a drain flow passage 1118 communicating with the water collecting tank, and the drain flow passage 1118 is located between the bottom plate 131 and the first housing 111 to prevent the drain flow passage 1118 from communicating with the outer drain flow passage 103. In addition, the air flow may be prevented from being expelled by the drain flow channel 1118.

Example five

The present embodiment provides a moisture drying apparatus which is different from the above-described embodiments in the arrangement position of the blower 20 and the structure of the flow path case 10.

As shown in fig. 12, in this embodiment, the runner casing 10 does not need to be provided with the volute 13, the runner casing 10 includes a housing 11 and a mounting cover 12, the first inlet 1111 is provided on one side of the housing 11, the mounting cover 12 is provided on the opposite side of the housing 11, the fan 20 is provided in the housing 11, and the axial end surface of the fan 20 is directly opposite to the first inlet 1111, so that double air intake can be achieved by using one fan 20.

Correspondingly, the total flow channel 101 in the flow channel is of a single-layer structure, and the total flow channel 101 is directly connected with the outer flow channel 103 and the backflow flow channel 102, so that the flow channel structure is simplified, and the cost is reduced.

Example six

The present embodiment provides a moisture drying apparatus which is different from the above-described embodiment in the arrangement position of the motor 21.

As shown in fig. 13, in the present embodiment, the motor 21 is provided on a side surface of the mounting cover 12 facing the outside of the flow path case 10, that is, the motor 21 is provided outside the flow path case 10. The motor 21 is arranged outside the runner and cannot be directly contacted with wet air or mixed air, so that the motor 21 is prevented from being broken down due to long-term contact of moisture in air flow and the motor 21, and the reliability of the fan 20 is guaranteed.

The outer wall of the mounting cover 12 is convexly provided with a guide rib 122, the guide rib 122 is used for separating the motor 21 from the second inlet 121, the motor 21 is arranged on one side of the guide rib 122, and the second inlet 121 is arranged on the other side of the guide rib 122. By arranging the flow guide ribs 122, the contact between the air flow entering the flow passage from the second inlet 121 and the motor 21 can be reduced, so that the contact probability between impurities such as dust in the air flow and the motor 21 is reduced, and the phenomenon that dust and the like are accumulated at the motor 21 to influence the normal operation of the motor 21 is avoided.

Example seven

The present embodiment provides a moisture drying apparatus which is further improved on the basis of the above-described embodiments.

As shown in fig. 14 and 15, a window 1116 is provided on the first housing 111, the window 1116 being in communication with the flow passage; the heating assembly 30 includes a fixing seat 31 and a heating element 32, the heating element 32 is disposed on the fixing seat 31, the fixing seat 31 is detachably connected to the outer wall of the first housing 111, and is in sealing fit with the window, and the heating element 32 is located in the runner housing 10. This arrangement allows the heating assembly 30 to be assembled and disassembled from the outside of the runner housing 10, and is more convenient to operate.

Alternatively, the fixing seat 31 may be fixed to the housing 11 by a fastener such as a screw or a pin, or may be fixed to the housing 11 by a clamping manner.

Example eight

The embodiment provides a dish washer, including the casing, set up in the inner bag of casing, set up the supporter in the inner bag, set up in the spraying subassembly in the casing and the moisture drying device in any one of the above-mentioned embodiments. The spraying component is used for spraying washing water to tableware and the like on the rack arranged in the liner so as to clean the tableware. The first inlet 1111 and the return 1112 in the moisture drying apparatus are in communication with the liner to dry the liner.

It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims (15)

1. A moisture drying device, characterized by comprising a runner shell (10) and a fan (20);

the flow channel shell (10) is provided with a first inlet (1111), a second inlet (121), an exhaust port (105) and a backflow port (1112), wherein the first inlet (1111) and the backflow port (1112) are both used for communicating with a cavity to be dried storing moisture, and the second inlet (121) is used for communicating with the outside of the flow channel shell (10);

A flow passage is formed in the flow passage shell (10), a circulation heating branch and a mixing external branch which are respectively communicated with the first inlet (1111) are formed in the flow passage, the circulation heating branch is communicated with the reflux port (1112), and the mixing external branch is communicated with the exhaust port (105);

the fan (20) comprises an impeller (22) arranged in the flow channel, the circumferential air outlet of the impeller (22), and the second inlet (121) is communicated with the air inlet of the impeller (22).

2. The wet gas drying apparatus according to claim 1, wherein the impeller (22) is arranged at the junction of the circulation heating branch and the mixing and discharge branch.

3. The moisture drying apparatus as claimed in claim 2, wherein the flow channels comprise a main flow channel (101), an outer flow channel (103) and a return flow channel (102), the main flow channel (101) and the outer flow channel (103) form the mixing outer flow branch, the main flow channel (101) and the return flow channel (102) form the circulation heating branch, a communication boundary between the outer flow channel (103) and the main flow channel (101) is a first boundary, and the second inlet (121) is arranged close to the first boundary;

and/or, the first boundary coincides with a part of the circumferential edge of the impeller (22);

And/or at least part of the second inlet (121) is opposite to the axial end face of the impeller (22);

and/or the second inlet (121) extends along the first boundary or a part of the second inlet (121) extends along the first boundary;

and/or the second inlet (121) is an arc-shaped hole extending along the circumference of the impeller (22).

4. A moisture drying apparatus according to claim 3, characterized in that the outer row of flow channels (103) and the return flow channel (102) each extend away from the main flow channel (101);

or, the outer flow channel (103) surrounds at least part of the total flow channel (101).

5. The wet gas drying apparatus according to any one of claims 1 to 4, wherein the flow path includes an inlet flow path (1011) and a mixing flow path (1012), the first inlet (1111) communicates with the inlet flow path (1011), the inlet flow path (1011) and the mixing flow path (1012) are arranged in a stacked manner along an axial direction of the blower (20) and communicate through a communication port (1311), the impeller (22) is arranged in the mixing flow path (1012), an axial end surface of the impeller (22) is opposite to the communication port (1311), and the second inlet (121), the exhaust port (105) and the return port (1112) all communicate with the mixing flow path (1012).

6. The moisture drying device according to claim 5, wherein the runner housing (10) comprises:

the device comprises a shell (11), wherein a runner cavity, an outer runner (103) and a backflow runner (102) are formed in the shell (11), the outer runner (103) and the backflow runner (102) are communicated with the runner cavity, the outer runner (103) is communicated with the exhaust port (105), and the backflow runner (102) is communicated with the backflow port (1112);

the spiral case (13) is arranged in the flow passage cavity, the communication port (1311) is formed in the spiral case (13), one side of the spiral case (13) and the shell (11) enclose an inlet flow passage (1011), the other opposite side of the spiral case (13) and the shell (11) enclose a mixing flow passage (1012), and the communication port (1311) is communicated with the inlet flow passage (1011) and the mixing flow passage (1012).

7. The moisture drying device according to claim 6, characterized in that the housing (11) comprises a first shell (111) and a second shell (112) which are connected, wherein a supporting rib (1113) is arranged in the middle of the first shell (111), and the supporting rib (1113) is arranged at a distance from the second shell (112);

the spiral case (13) includes bottom plate (131) and first curb plate (132), be provided with on bottom plate (131) intercommunication mouth (1311), bottom plate (131) overlap joint in on bracing muscle (1113), first curb plate (132) with bottom plate (131) are connected and with second casing (112) butt, spiral case (13) with second casing (112) enclose into mixing runner (1012).

8. The moisture drying apparatus as claimed in claim 7, wherein the support rib (1113) includes a first rib plate and a second rib plate, the first rib plate extends along a communication boundary of the return flow passage (102) and the flow passage chamber, the second rib plate extends along a communication boundary of the outer flow passage (103) and the flow passage chamber, a gap between the first rib plate and the second housing (112) communicates the mixing flow passage (1012) and the return flow passage (102), and the second rib plate communicates the mixing flow passage (1012) and the outer flow passage (103).

9. The wet gas drying apparatus according to claim 7, wherein a water baffle (1117) is disposed in the housing (11), the water baffle (1117) is disposed at one end of the backflow channel (102) and is communicated with the mixing channel (1012), the water baffle (1117) and the inner wall of the housing (11) enclose a water collecting tank, a water drainage channel (1118) communicated with the water collecting tank is disposed on the housing (11), and the water drainage channel (1118) is disposed between the bottom plate (131) and the first housing (111).

10. The moisture drying device according to any of claims 1-4, characterized in that the fan (20) further comprises a motor (21), the motor (21) being in driving connection with the impeller (22), the motor (21) being arranged in the runner casing (10), the motor (21) being located inside or outside the runner casing (10).

11. The moisture drying device according to claim 10, wherein the runner housing (10) comprises:

the air conditioner comprises a shell (11), wherein the flow channel is formed in the shell (11), and a fan mounting hole is formed in the shell (11);

the installation cover (12), the installation cover (12) with shell (11) are connected and shelter from the mounting hole, fan (20) set up in on installation cover (12), be provided with on installation cover (12) second entry (121).

12. The moisture drying device according to claim 11, characterized in that the outer wall of the mounting cover (12) is convexly provided with a flow guiding rib (122), the flow guiding rib (122) being arranged between the motor (21) and the second inlet (121).

13. The wet gas drying apparatus according to any one of claims 1-4, further comprising a heating assembly (30), at least part of the heating assembly (30) being located within the circulation heating branch, the return opening (1112) being located downstream of the heating assembly (30) in the direction of airflow flow.

14. The moisture drying device according to any one of claims 1-4, characterized in that a water return channel (104) is formed in the runner housing (10), which water return channel (104) is arranged at least around the bottom of the first inlet (1111).

15. A dishwasher comprising a liner, characterized in that it further comprises a moisture drying device according to any one of claims 1-14, said first inlet (1111) and said return (1112) being in communication with said liner.