CN111947385A

CN111947385A - Flow guide device and air-cooled refrigeration equipment with same

Info

Publication number: CN111947385A
Application number: CN201910405527.5A
Authority: CN
Inventors: 廉锋; 李大伟; 丁剑波; 潘自杰; 徐磊; 李录功
Original assignee: Wuhan Haier Refrigerator Co ltd
Current assignee: Wuhan Haier Refrigerator Co ltd
Priority date: 2019-05-16
Filing date: 2019-05-16
Publication date: 2020-11-17
Anticipated expiration: 2039-05-16
Also published as: CN111947385B

Abstract

The invention provides a flow guide device and air-cooled refrigeration equipment with the same, wherein the flow guide device comprises: a conduit and a flexible plate disposed at an end face of a first opening of the conduit, a first surface of the flexible plate comprising a first region and a second region, the first region being fixedly attached to the end face, wherein the first surface of the flexible plate faces the end face; the second area and the end face are in separable connection, the second area can cover the first opening, and the second area is matched with the end face. Here, when the pressure to which the first surface is subjected is greater, the second region is remote from the end surface, otherwise the second region is in close connection with the end surface, i.e. the flow guiding device allows fluid in the conduit to flow out of the first opening, but fluid in the external space cannot enter the conduit along the first opening.

Description

Flow guide device and air-cooled refrigeration equipment with same

Technical Field

The invention relates to the technical field of refrigeration equipment, in particular to a flow guide device and air-cooled refrigeration equipment with the same.

Background

The air-cooled refrigeration equipment is refrigeration equipment keeping constant low temperature, is an electrical appliance for preserving articles at low temperature, and is widely applied to the fields of commerce and household.

In the air cooling refrigeration equipment, an air duct is arranged, during refrigeration, air with higher temperature in a storage chamber can be sucked into the air duct, then flows through the periphery of an evaporator and is cooled into air with lower temperature, frost is condensed on the surface of the evaporator in the process, and then the air with lower temperature flows into the storage chamber through the air duct, so that the refrigeration of the storage chamber is completed. After a certain period of time, it is usually necessary to defrost the storage compartment, at which time the frost on the evaporator surface melts into ice and/or water and falls into the drip-box; thereafter, the ice and/or water flows along the drain pipe into the evaporation pan, where it is evaporated into water vapor, thereby completing the defrosting process of the evaporator.

In the long-term work of the inventor, when the evaporator is refrigerating, the temperature of the air in the air duct may drop, so that the air pressure in the air duct drops, and the following problems are found to exist: (1) hot air in the surrounding environment is sucked into the air channel through a drainage pipeline; (2) the ice and/or water in the evaporating dish is pumped back into the water receiving box through a drainage pipeline; it can be understood that both of these situations need to be avoided to the utmost, and therefore, how to prevent the above two situations in the air-cooled refrigeration equipment becomes a problem to be solved.

Disclosure of Invention

The invention aims to provide a flow guide device and air-cooled refrigeration equipment with the same.

In order to achieve one of the above objects, an embodiment of the present invention provides a flow guide device, including: a conduit and a flexible plate disposed at an end face of a first opening of the conduit, a first surface of the flexible plate comprising a first region and a second region, the first region being fixedly attached to the end face, wherein the first surface of the flexible plate faces the end face; the second area and the end face are in separable connection, the second area can cover the first opening, and the second area is matched with the end face.

As a further improvement of an embodiment of the present invention, the flexible sheet becomes thicker gradually in a direction from the second region toward the first region.

As a further development of an embodiment of the invention, grooves are provided in a second surface of the flexible plate, wherein the second surface faces away from the end surface.

As a further refinement of an embodiment of the invention, the groove traverses the second surface.

As a further improvement of an embodiment of the present invention, a concave portion is provided on the first surface of the flexible board.

As a further improvement of the embodiment of the present invention, when the duct is placed vertically with the first opening facing downward, the height of the bottom surface of the recess gradually increases in a direction from the second region toward the first region.

As a further improvement of an embodiment of the present invention, when the duct is placed vertically with the first opening facing downward, the height of the first surface becomes gradually larger in a direction from the second region toward the first region.

As a further improvement of an embodiment of the present invention, the conduit and the flexible plate are made of rubber material.

The embodiment of the invention also provides air-cooled refrigeration equipment, which comprises: the evaporator, a water receiving box positioned below the evaporator, an evaporation pan, a drain pipe and the flow guide device; the inlet of the drain pipe is communicated with the water receiving box, the outlet of the drain pipe is communicated with the second opening of the guide pipe of the flow guide device, and the flow guide device is positioned right above the evaporating dish.

As a further improvement of an embodiment of the present invention, the first opening of the duct is directed downward.

As a further improvement of an embodiment of the present invention, the drain pipe includes a first pipe disposed obliquely, and a second pipe disposed vertically; the high end of the first pipeline is communicated with the water receiving box, and the low end of the first pipeline is communicated with the upper end of the second pipeline; the lower end of the second pipeline is communicated with a second opening of the guide pipe of the flow guide device.

As a further improvement of the embodiment of the present invention, a first snap-fit connection device is disposed at the lower end of the first pipeline, and a second snap-fit connection device is disposed at the upper end of the second pipeline; the second snap connection means can be inserted axially into the first snap connection means and turned in the circumferential direction to be interlocked in a snap-in manner.

As a further improvement of an embodiment of the present invention, the second snap connection device includes a plurality of protruding jaws, and the first snap connection device includes a plurality of through grooves and notch slots that are matched with the protruding jaws; the protruding jaw is inserted into the through groove and rotates along the circumferential direction, and then falls into the notch clamping groove, so that the lower end of the first pipeline and the upper end of the second pipeline are locked in a buckling mode.

As a further improvement of the embodiment of the present invention, the lower end of the first pipe is inserted into the internal passage at the upper end of the second pipe, and an annular elastic member for sealing the first and second pipes is provided on the outer surface of the lower end of the first pipe.

Compared with the prior art, the invention has the technical effects that: the embodiment of the invention provides a flow guide device and an air-cooling refrigeration device with the same, wherein the flow guide device allows fluid in a guide pipe to flow out from a first opening, but the fluid in an external space cannot enter the guide pipe along the first opening, when an evaporator refrigerates a storage chamber, the temperature of air in an air duct is reduced, the air pressure in the air duct is reduced, and because the flow guide device is arranged at an outlet of a drain pipe, when the evaporator refrigerates, the air pressure in the air duct is reduced, and hot air in the surrounding environment and ice and/or water in an evaporation dish cannot be sucked into the air duct or a water receiving box.

Drawings

FIG. 1A is a perspective view of a deflector device in an embodiment of the invention;

FIGS. 1B-1D are exploded views of a deflector in an embodiment of the invention;

FIG. 1E is a cross-sectional view of a deflector device in an embodiment of the invention;

FIG. 2A is a schematic structural diagram of an air-cooled refrigeration apparatus according to an embodiment of the present invention;

FIG. 2B is a first perspective view of the drain pipe in an embodiment of the present invention;

FIGS. 2C and 2D are first exploded views of a drain pipe in an embodiment of the present invention from different perspectives;

FIG. 2E is a first cross-sectional view of a drain in an embodiment of the present invention;

FIG. 3A is a second perspective view of a drain in an embodiment of the present invention;

FIG. 3B is a second exploded view of the drain pipe in an embodiment of the present invention;

fig. 3C is a second cross-sectional view of a drain in an embodiment of the present invention.

Detailed Description

The present invention will be described in detail below with reference to embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.

Terms such as "upper," "above," "lower," "below," and the like, used herein to denote relative spatial positions, are used for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Also, it should be understood that, although the terms first, second, etc. may be used herein to describe various elements or structures, these described elements should not be limited by these terms. These terms are only used to distinguish these descriptive objects from one another. For example, a first surface may be referred to as a second surface, and similarly a second surface may also be referred to as a first surface, without departing from the scope of the present application.

An embodiment of the present invention provides a flow guiding device, as shown in fig. 1A to 1C, including:

a conduit 1 and a flexible plate 2 arranged at an end surface 111 of a first opening 11 of said conduit 1, a first surface 21 of said flexible plate 2 comprising a first region 211 and a second region 212, the first region 211 being fixedly connected to said end surface 111, wherein the first surface 21 of said flexible plate 2 faces said end surface 111;

the second area 212 is detachably connected to the end surface 111, the second area 212 can cover the first opening 11, and the second area 212 is matched with the end surface 111. Here, since the second region 212 is fitted to the end surface 111, when the second region 212 is connected to the end surface 111, the second region 212 seals the first opening 11; similarly, when the second region 212 is separated from the end surface 111, and there is a gap between the second region 212 and the end surface 111, the fluid can flow into the first opening 11 or flow out of the first opening 11.

As shown in fig. 1A to 1C, the conduit 1 includes a second opening 12, a first opening 11, and an internal passage located inside the conduit 1 and communicating the second opening 12 and the first opening 11.

The flexible plate 2 is made of a flexible material and comprises a first surface 21 and a second surface 22 which are opposite, wherein the first surface 21 faces the end surface 111, and the second surface 22 faces away from the end surface 111; when the pressure difference between the first and second surfaces (i.e. the pressure applied to the first surface 21 minus the pressure applied to the second surface 22) is large enough (i.e. greater than or equal to a predetermined value), the flexible plate 2 deforms, and at this time, the second region 212 is far away from the end surface 111, and a gap is generated between the second region 212 and the end surface 111, and at this time, the flexible plate 2 does not block the first opening 11, and the fluid (e.g. liquid or gas, etc.) in the internal channel flows out from the gap between the flexible plate 2 and the end surface 111, it can be understood that, at this time, the external fluid can also enter the internal channel along the gap; when the pressure difference between the first and second surfaces (i.e. the pressure applied to the first surface 21 minus the pressure applied to the second surface 22) is not large (i.e. smaller than the predetermined value), the flexible plate 2 is not deformed, and the second region 212 is hermetically connected to the end surface 111, at this time, the flexible plate 2 blocks the first opening 11, and the fluid in the external space cannot enter the internal passage along the first opening 11. In summary, when fluid is injected into the internal channel through the second opening 12 and sufficient pressure is applied to the internal channel (the pressure is equal to or greater than a predetermined value) is applied to the internal channel, the fluid flows out along the first opening 11, but when fluid is sucked from the second opening 12 and the pressure in the internal channel is sufficiently small (the pressure is equal to or less than the predetermined value), the flexible plate 2 blocks the first opening 11, and at this time, the fluid in the external space cannot enter the internal channel, that is, the fluid cannot be sucked from the second opening 12, that is, the flow guide device can prevent the fluid from flowing back from the first opening 11.

Optionally, the preset value is greater than zero.

Preferably, as shown in fig. 1D, the flexible board 2 becomes thicker gradually in a direction (e.g., as indicated by a dotted arrow in fig. 1D) of the second region 212 toward the first region 211.

Here, the first surface 21 is divided into a first area 211 and a second area 212, wherein the first area 211 is fixedly connected to the end surface 111, and the second area 212 is detachably connected to the end surface 111, it can be understood that when the pressure difference between the first surface 21 and the second surface 22 is greater than or equal to the preset value, the second area 212 is far away from the end surface 111, a gap is generated between the second area 212 and the end surface 111, and conversely, a sealed connection is formed between the second area 212 and the end surface 111.

Here, it is understood that when a force is applied to a certain point in the second area 212, the farther the force is from the first area 211, the greater the moment generated by the force at the junction of the first and second areas, and as the usage time is prolonged, there is a possibility that the flexible board 2 may not seal the first opening 11 even if the pressure difference between the first and second surfaces is not large, that is, the elastic force of the flexible board 2 is deteriorated. In practical use, the conduit 1 is generally vertical, i.e. the second opening 12 faces upwards, and the first opening 11 faces downwards, and at this time, the gravity of the second region 212 is parallel to the pressure applied to the first surface 21, so that the flexible board 2 is easier to unseal the first opening 11, and in order to reduce the probability of this happening, the thinner the portion farther from the first region 211 is, i.e. the lighter the portion is, the smaller the moment generated by the gravity of the second region 212 at the joint of the first and second regions is; the thicker the portion closer to the first region 211, the better the elasticity of the flexible board 2 is given.

Preferably, as shown in fig. 1C and 1D, several grooves 221 are provided on the second surface 22 of the flexible plate 2, wherein the second surface 22 faces away from the end surface 111. Here, when the pressure difference between the first surface 21 and the second surface 22 is equal to or greater than the predetermined value, the flexible board 2 is easily bent as indicated by the arrow in fig. 1C and 1D, and therefore, the provision of the groove 221 in the second surface 22 greatly facilitates the bending of the flexible board 2 even if the fluid in the internal passage in the conduit 1 flows out along the first opening 11.

Preferably, said groove 221 crosses the second surface 22. The groove 221 traverses the second surface 22 and is very convenient for bending of the flexible plate 2.

Preferably, the first surface 21 of the flexible board 2 is provided with a recess 213. In actual use, the following may occur: in the case of some liquid in the inner channel of the conduit 1, it is possible that the liquid flows out along the gap between the end face 111 and the flexible plate 2 even if it is not desired to flow out from the first opening 11, whereas the liquid can be temporarily stored in the recess 213 if the first surface 21 is provided with the recess 213. Alternatively, when the conduit 1 is in a vertical state, i.e. with the second opening 12 facing upwards and the first opening 11 facing downwards, the pressure difference between the first surface 21 and the second surface 22 is greater than or equal to a preset value if the recess 213 is filled with water.

Preferably, as shown in fig. 1E, when the conduit 1 is vertically placed with the first opening 11 facing downward, the height of the bottom surface of the concave portion 213 becomes gradually larger in a direction (a direction of a dotted arrow in fig. 1E) in which the second region 212 faces the first region 211. Here, when the fluid is collected in the concave portion 213, the fluid flows in a direction away from the first region 211, and it is understood that the moment generated by the gravity of the fluid at the connection of the first and second regions becomes large, and therefore, it is easier to bend the second region 212, that is, it is more favorable for the second region 212 to be away from the end surface 111.

Preferably, as shown in fig. 1E, when the conduit 1 is vertically placed with the first opening 11 facing downward, the height of the first surface 21 becomes gradually larger in a direction (e.g., a direction of a dotted arrow in fig. 1E) in which the second region 212 faces the first region 211. Here, when the fluid is collected on the first surface 21, the fluid flows in a direction away from the first region 211, and it can be understood that the moment generated by the gravity of the fluid at the joint of the first and second regions becomes larger, so that it is easier to bend the second region 212, i.e. it is more favorable for the second region 212 to be away from the end surface 111.

Preferably, the conduit 1 and the flexible plate 2 are both made of rubber material.

Here, as shown in fig. 1A to 1D, in practice, the conduit 1 and the flexible board 2 may be integrally formed and made of a rubber material, and as shown in fig. 1A, the production steps may be: (1) providing an initial pipeline, wherein one end of the initial pipeline is provided with an opening, and the other end of the initial pipeline is provided with a closed structure; (2) the initial pipe is cut along the dotted arrow in fig. 1A without cutting the initial pipe, thereby obtaining a pipe 1 and a flexible board 2. Here, a saw may be used to cut the initial pipe, as shown in fig. 1D, eventually such that the connecting line between the first region 211 and the second region 212 is an approximate straight line, optionally with the groove 221 parallel to the straight line.

Alternatively, as shown in fig. 1A-1D, the outer surface of the catheter 1 may define a cross-sectional area, in the direction from the first opening 11 to the second opening 12, that is a tapered frustum, which can be easily inserted into another tubular body in use.

Alternatively, in the direction in which the first opening 11 faces the second opening 12 (for convenience of description, the direction is described as a first direction), the cross-sectional area of the internal passage is circular, as shown in fig. 1B, and the end surface 111 is not perpendicular to the first direction.

An embodiment of the present invention provides an air-cooled refrigeration apparatus, as shown in fig. 2A, including:

the evaporator 41, the water receiving box 42 positioned below the evaporator 41, the evaporating dish 32, the drain pipe 5 and the flow guide device in the first embodiment;

the inlet of the drainage pipe 5 is communicated with the water receiving box 42, and the outlet is communicated with the second opening 12 of the conduit 1 of the flow guide device, and the flow guide device is positioned right above the evaporation dish 32.

Here, when the defrosting process is performed on the evaporator 41, the frost on the surface of the evaporator 41 may melt into ice and/or water, the ice and/or water may drop into the water receiving box 42, and then the ice and/or water may flow along the drain pipe 5 to the second opening 12 of the deflector and then to the first opening 11, and may be collected on the first surface 21 of the flexible plate 2, and when the ice and/or water is collected on the first surface 21 to a certain amount, that is, when the pressure difference between the first surface 21 and the second surface 22 is greater than or equal to the predetermined value, the second area 212 in the first surface 21 is away from the end surface 111, so that the ice and/or water can flow into the evaporation pan 32.

Here, when the evaporator 41 cools the storage compartment 43, the temperature of the air in the air duct decreases, and the air pressure in the air duct decreases, and since the flow guide device is provided at the outlet of the drain pipe 5, when the evaporator 41 cools, the air pressure in the air duct decreases, and neither the hot air in the ambient environment nor the ice and/or water in the evaporation pan 32 can be sucked into the air duct or the water receiver.

Alternatively, as shown in fig. 2A, the air-cooled refrigeration device may be an air-cooled horizontal refrigerator. In the air-cooled horizontal refrigerator, the press cabin 3 and the evaporator compartment (i.e., the compartment in which the evaporator 41 is located in the air duct) are adjacently arranged side by side, in the evaporator chamber, a water receiving box 42 is arranged below the evaporator 41, an evaporation pan 32 is arranged in the press chamber 3, a drain pipe 5 is arranged in the wall between the evaporator chamber and the press chamber 3, the height of the evaporation pan 32 is lower than that of the water receiving box 42, so that the ice and/or water in the water receiver 42 can flow along the drain pipe 5 to the evaporation pan 32, alternatively, the evaporation pan 32 can evaporate the ice and/or water in the evaporation pan 32 using heat generated by the compressor 31 during operation, and further, a vent hole communicating with the external space is provided in the wall of the pressing chamber 3 so that the water vapor generated by the evaporating dish 32 can flow along the vent hole to the air in the external space. Optionally, a heating wire is arranged in the water receiving box 42, so that ice in the water receiving box 42 can be melted into water, and the water can conveniently flow into the flow guide device through the drain pipe 5.

Optionally, the flow guiding device extends into the evaporation pan 32. Here, in practice, the air-cooled refrigeration equipment usually has electronic components, and in order to prevent the water discharged by the flow guiding device from splashing out of the evaporation pan 32, the flow guiding device may be extended into the evaporation pan 32, that is, the distance between the first opening 11 of the flow guiding device and the evaporation pan 32 is relatively small, so that the ice and/or water dropping from the first opening 11 can be effectively prevented from splashing out of the evaporation pan 32.

Preferably, the first opening 11 of the conduit 1 is directed downwards. Here, the second opening 12 of the conduit 1 is facing upwards and the first opening 11 is facing downwards, i.e. the deflector is arranged vertically.

Preferably, as shown in fig. 2B to 2E, the water discharge pipe 5 includes a first pipe 51 disposed obliquely, and a second pipe 52 disposed vertically; the high end 511 of the first pipeline 51 is communicated with the water receiving box 42, and the low end 512 is communicated with the upper end 521 of the second pipeline 52; the lower end 522 of the second conduit 52 communicates with the second opening 12 of the duct 1 of the deflector. Here, as shown by a dotted arrow in fig. 2E, the ice and/or water in the water receiver 42 first flows in the first pipe 51 in an obliquely downward direction, then flows into the second pipe 52, and then flows in the second pipe 52 in a vertical direction into the deflector. Here, as shown in fig. 2A, the high end 511 of the first pipe 51 is exposed in the evaporator chamber and connected to the water receiver 42 (for example, connected to the bottom of the water receiver 42, or the bottom of one side), the low end is exposed in the press chamber 3, and the rest of the first pipe 51 is disposed in the wall between the evaporator chamber and the press chamber 3. Here, at the time of production, the first pipe 51 may be first installed in the wall between the evaporator compartment and the press cabin 3 such that the high end 511 communicates with the water receiving box 42 and the low end 512 is exposed to the press cabin 3, then the foaming material is injected in the wall between the evaporator compartment and the press cabin 3, and after the foaming is completed, the second pipe 52 may be installed in the press cabin 3, which is understood to be very convenient for production.

Here, as shown in fig. 2E, the cross-section of the inner passage of the first duct 51 becomes gradually smaller in a direction in which the high end 511 is directed toward the low end 512. Here, since the high end 511 has a large cross section, the ice in the water receiver 42 easily flows into the first pipe 51, and it is understood that since the low end 512 is exposed to the press chamber 3, heat generated by the compressor 31 during operation is introduced into the first pipe 51 along with air, so that the ice entering the first pipe 51 can be melted, and then the ice becomes smaller and smaller, and then can flow into the second pipe 52, and finally into the guide device. It will be appreciated that in the baffle device the gap between the flexible plate 2 and the end surface 111 is not generally of a large size, so that when a large volume of ice is present in the guide duct 1, it is not easily able to flow out of the first opening 11, where, in the direction from the high end 511 towards the low end 512, the larger volume of ice is not easily able to enter the second duct 52, i.e. the baffle device, due to the gradually decreasing cross-section of the internal passage of the first duct 51.

Preferably, as shown in fig. 2B-2D, the lower end 512 of the first pipe 51 is provided with a first snap-fit connection device 513, and the upper end 521 of the second pipe 52 is provided with a second snap-fit connection device 523; the second snap connection 523 can be inserted axially into the first snap connection 513 and turned in the circumferential direction to interlock in a snap-in manner. Here, during the production process, it is only necessary to insert the second snap connection means 523 in alignment with the first snap connection means 513 and then rotate it once, which is very convenient for the production, and it can be understood that it is necessary to ensure that the lower end 522 of the second conduit 52 is facing downwards after rotating the second snap connection means 523 in the circumferential direction.

Preferably, as shown in fig. 2B-2D, the second snap connecting means 523 includes a plurality of protruding claws 5231, and the first snap connecting means 513 includes a plurality of through grooves 5131 and notched grooves 5132 matched with the protruding claws 5231; after the protruding claws 5231 are inserted into the through grooves 5131 and rotated in the circumferential direction, the protruding claws 5231 fall into the notch grooves 5132, thereby locking the lower ends 512 of the first pipes 51 and the upper ends 521 of the second pipes 52 in a snap-fit manner. Here, as shown in fig. 2C and 2D, the protrusion jaws 5231 are first inserted into the through grooves 5131 in the direction of the dotted arrow, and then rotated in the circumferential direction as shown by the solid arrow such that the protrusion jaws 5231 fall into the notch groove 5132, and thus the first and

second pipes

51 and 52 are locked. Alternatively, as shown in fig. 2B to 2D, the number of the protruding claws 5231 is two, and is provided on the outer surface of the upper end 521 of the second pipe 52 and uniformly distributed along the circumferential direction of the second pipe 52; the through grooves 5131 and the notch clamping grooves 5132 are two, are disposed at the lower end 512 of the first pipeline 51, and are also uniformly distributed along the circumferential direction of the first pipeline 51. Alternatively, as shown in fig. 2B-2D, the second conduit 52 extends first in a horizontal direction, then bends downward, and then extends in a vertical direction.

As shown in fig. 2E, a first annular boss 514 is provided at the lower end 512 of the first pipe 51, the first annular boss 514 abuts against the end surface of the upper end 521 of the second pipe 52, and here, when the protruding claws 5231 can fall into the notched groove 5132, the first annular boss 514 abuts against the end surface of the upper end 521 of the second pipe 52; the lower end 512 of the first pipe 51 can be inserted into the inner channel of the upper end 521 of the second pipe 52, here, an annular elastic member 515 can be arranged on a side surface of the first annular boss 514 facing the second pipe 52, the annular elastic member 515 can seal the first pipe and the second pipe, and the annular elastic member 515 can apply an elastic force (the elastic force direction is shown by a solid arrow in fig. 2E) on the end surface of the upper end 521 of the second pipe 52, which is away from the first annular boss 514, so that the protruding claws 5231 can be more firmly fixed in the notched groove 5132.

Here, as shown in fig. 2B to 2E, a second annular boss 516 is further provided on the lower end 512 of the first pipe 51, the second annular boss 516 being farther from the end face of the upper end of the second pipe 52 than the first annular boss 514. Here, a through hole having a size larger than that of the cross section of the first annular boss 514 and smaller than that of the second annular boss 516 may be provided on the wall 33 of the pressing chamber 3 (the wall 33 faces the evaporator chamber, and the wall 33 is a part of the wall between the evaporator chamber and the pressing chamber 3), so that, when installed, the lower end 512 of the first pipe 51 is inserted into the through hole of the wall 33 in the wall between the evaporator chamber and the pressing chamber 3, and then the second annular boss 516 abuts against the wall 33, it is understood that the wall 33 and the second annular boss 516 can fix the first pipe 51, thereby effectively preventing the first pipe 51 from sliding during foaming. Here, as shown in fig. 2B-2E, a flange 517 and a plurality of fasteners 518 may be disposed at the high end 511 of the first pipe 51, so that the high end 511 of the first pipe 51 can be firmly fixed in the wall of the evaporator chamber (the wall facing the press chamber 3 and having a through hole and a fastener hole for engaging with the fastener 518) and the first pipe 51 can be effectively prevented from sliding during the foaming process.

In a third embodiment of the present invention, as shown in fig. 3A to 3C, the air-cooled refrigeration apparatus is different from the air-cooled refrigeration apparatus in the second embodiment in that a lower end 512 of the first pipe 51 is inserted into an inner channel of an upper end 521 of the second pipe 52, and an annular elastic member 515 for sealing the first pipe and the second pipe is disposed on an outer surface of the lower end 512 of the first pipe 51. Here, the size of the outer surface of the lower end 512 of the first pipe 51 is equal to or smaller than the size of the inner passage of the upper end 521 of the second pipe 52, so that the lower end 512 of the first pipe 51 can be inserted into the inner passage of the upper end 521 of the second pipe 52, which is very convenient to install, and in addition, the ring-shaped elastic member 515 can prevent water from flowing out from the gap between the first and second pipes.

Here, a plurality of protrusions 5211 are formed in the inner wall of the upper end 521 of the second pipe 52, and these protrusions 5211 may be used to catch the ring-shaped elastic member 515, thereby making the connection between the first and second pipes more firm. For example: two annular bosses are provided in the inner wall of the upper end 521 in the extending direction of the second pipe 52 so that the annular elastic member 515 can be caught in the groove between the two annular bosses, it being understood that the annular bosses are removed to obtain the plurality of unconnected protrusions 5211. In addition, an annular projection is provided in the inner wall of the upper end 521 so that the annular resilient member 515 can be pressed against the annular projection, it being understood that the annular projection is removed to provide a plurality of unconnected protrusions 5211.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.

Claims

1. A flow directing device, comprising:

a conduit (1) and a flexible plate (2) arranged at an end face (111) of a first opening (11) of the conduit (1), a first surface (21) of the flexible plate (2) comprising a first region (211) and a second region (212), the first region (211) being fixedly connected to the end face (111), wherein the first surface (21) of the flexible plate (2) is facing the end face (111);

the second area (212) is detachably connected with the end face (111), the second area (212) can cover the first opening (11), and the second area (212) is matched with the end face (111).

2. The flow directing device of claim 1, wherein:

the flexible plate (2) becomes thicker in the direction of the second region (212) towards the first region (211).

3. The flow directing device of claim 2, wherein:

a plurality of grooves (221) are provided in the second surface (22) of the flexible plate (2), wherein the second surface (22) faces away from the end face (111).

4. The flow directing device of claim 3, wherein:

the groove (221) traverses the second surface (22).

5. The flow directing device of claim 1, wherein:

a recess (213) is provided on the first surface (21) of the flexible board (2).

6. The flow directing device of claim 5, wherein:

when the conduit (1) is placed vertically with the first opening (11) facing downward, the height of the bottom surface of the recess (213) becomes gradually larger in the direction of the second region (212) toward the first region (211).

7. The flow directing device of claim 1, wherein:

when the conduit (1) is placed vertically with the first opening (11) facing downwards, the height of the first surface (21) becomes progressively greater in the direction of the second zone (212) towards the first zone (211).

8. The flow directing device of claim 1, wherein:

the guide pipe (1) and the flexible plate (2) are both made of rubber materials.

9. An air-cooled refrigeration apparatus, comprising:

the evaporator (41), a water receiving box (42) positioned below the evaporator (41), the evaporation dish (32), the drain pipe (5) and the flow guiding device of any one of claims 1-8;

the inlet of the drain pipe (5) is communicated with the water receiving box (42) and the outlet is communicated with the second opening (12) of the guide pipe (1) of the flow guide device, and the flow guide device is positioned right above the evaporating dish (32).

10. The air-cooled refrigeration unit of claim 9, wherein:

the first opening (11) of the conduit (1) is directed downwards.

11. The air-cooled refrigeration unit of claim 9, wherein:

the drain pipe (5) comprises a first pipeline (51) which is obliquely arranged and a second pipeline (52) which is vertically arranged;

the high end (511) of the first pipeline (51) is communicated with the water receiving box (42) and the low end (512) is communicated with the upper end (521) of the second pipeline (52);

the lower end (522) of the second conduit (52) is communicated with the second opening (12) of the guide pipe (1) of the flow guide device.

12. The air-cooled refrigeration unit of claim 11, wherein:

a first snap connection device (513) is arranged at the lower end (512) of the first pipeline (51), and a second snap connection device (523) is arranged at the upper end (521) of the second pipeline (52); the second snap connection means (523) can be inserted axially into the first snap connection means (513) and turned in the circumferential direction to interlock in a snap-in manner.

13. The air-cooled chiller plant of claim 12, wherein:

the second snap connection device (523) comprises a plurality of protruding claws (5231), and the first snap connection device (513) comprises a plurality of through grooves (5131) and notch clamping grooves (5132) matched with the protruding claws (5231);

after the protruding jaws (5231) are inserted into the through grooves (5131) and rotated in the circumferential direction, the protruding jaws (5231) fall into the notch catching grooves (5132), thereby locking the lower end (512) of the first pipe (51) and the upper end (521) of the second pipe (52) in a snap-fit manner.

14. The air-cooled refrigeration unit of claim 11, wherein:

the lower end (512) of the first pipeline (51) is inserted into the inner channel of the upper end (521) of the second pipeline (52), and the outer surface of the lower end (512) of the first pipeline (51) is provided with an annular elastic piece (515) for sealing the first pipeline and the second pipeline.