CN220380020U - Microchannel water heater - Google Patents

Abstract

The utility model is applicable to the technical field of heat exchangers, and provides a micro-channel water heater, which comprises: the utility model provides a vertical symmetrical first collecting pipe and second collecting pipe that sets up, first collecting pipe the dislocation intercommunication has conveyer pipe, exhaust pipe on the second collecting pipe, first collecting pipe with along vertical equidistant distribution between the second collecting pipe has a plurality of flat pipes, every all be provided with at least one microchannel pipe in the flat pipe, fixed establishment, it has: set up in the centre gripping subassembly at flat pipe both ends, this device is through setting up the centre gripping subassembly at flat pipe both ends to the convenience is fixed its inside microchannel pipe, prevents that microchannel pipe and the first pressure manifold of both sides, second pressure manifold from taking place to break away from when installation and follow-up use, and then has guaranteed the smooth circulation of this device refrigerant in the operation process, provides favourable guarantee for the normal heat transfer of this device.

Description

Microchannel water heater

Technical Field

The utility model belongs to the technical field of heat exchangers, and particularly relates to a micro-channel water heater.

Background

In order to improve the heat exchange efficiency of the heat pump water heater, the current heat pump water heater is more prone to be provided with a micro-channel heat exchanger, and the micro-channel heat exchanger is different from a conventional heat exchanger in that the micro-channel heat exchanger has special 'size effect' on heat transfer, mass transfer and flow due to the small cross section area of a channel hole in the micro-channel heat exchanger.

The Chinese patent with publication number of CN107289678A discloses a microchannel heat exchanger and a heat pump water heater, which comprises a pressurizing part, a plurality of groups of microchannel pipes and two collecting pipes, wherein two ends of each group of microchannel pipes are respectively provided with one collecting pipe, and at least one collecting pipe is provided with the pressurizing part for increasing the flowing pressure of a refrigerant in the collecting pipes. According to the microchannel heat exchanger, the pressurizing part is arranged in at least one collecting pipe, when the refrigerant flows through the pressurizing part along the length direction of the collecting pipe, the flowing pressure can be increased under the action of the pressurizing part, so that the pressure loss of the refrigerant flowing along the length direction of the collecting pipe can be compensated, the flow velocity of the refrigerant in each microchannel pipe is increased, the flow velocity and the flow velocity distribution in each microchannel pipe are more uniform, the temperature field of the microchannel heat exchanger is more uniform, the integral heat exchange state of the microchannel heat exchanger is improved, and the heat exchange efficiency is improved.

However, the above-mentioned comparison document has the following technical problems in practical use:

1. the flat pipe both ends in above-mentioned device are installed on the both sides collecting pipe through simple afraid of concatenation mode, and this kind of connected mode can guarantee that flat pipe can be quick installation when the assembly, but after long-time use or above-mentioned device is receiving vibration or collision, flat pipe easily takes place to break away from with the both sides collecting pipe to lead to flowing in the unable effectual conduction of refrigerant medium in the collecting pipe to in the microchannel pipe, thereby cause seepage or the loss of refrigerant medium.

2. Due to the fact that a fixing device for the micro-channel tube is absent in the device, when the device is assembled with the flat tube or the micro-channel tube, if the deviation between the collecting tube and the flat tube or the micro-channel tube is small, the refrigerant medium cannot be stably transmitted to the micro-channel tube, and therefore effective heat exchange of the device cannot be achieved.

Disclosure of Invention

The utility model provides a microchannel water heater, which aims to solve the problems that the positioning device for installing a flat tube is not available in the device in the background art, so that the flat tube is easy to separate from a collecting pipe when the device is used for a long time or collides, and meanwhile, the fixing device for the microchannel tube and the collecting pipe is not available in the device, so that a refrigerant medium cannot be stably transmitted into the microchannel tube when a small deviation occurs during assembly, and the refrigerant medium is lost or wasted.

The utility model is realized in that a microchannel water heater comprises: the utility model provides a vertical symmetrical first collecting pipe and second collecting pipe that sets up, first collecting pipe the dislocation intercommunication has conveyer pipe, exhaust pipe on the second collecting pipe, first collecting pipe with along vertical equidistant distribution between the second collecting pipe has a plurality of flat pipes, every all be provided with at least one microchannel pipe in the flat pipe, fixed establishment, it has: the clamping assemblies are arranged at two ends of the flat tube, are clamped and fixed on the outer sides of the micro-channel tubes, and the locking assemblies are arranged on opposite side walls of the first collecting tube and the second collecting tube, and are used for realizing the installation and fixation of the end parts of the flat tube; in the scheme, when the device works, the refrigerant enters the first collecting pipe communicated with the first collecting pipe through the conveying pipe, is conveyed to the plurality of micro-channel pipes communicated with the first collecting pipe through the first collecting pipe, the gaseous refrigerant flows to the second collecting pipe at the other side in the micro-channel pipes, flows along the second collecting pipe to the first collecting pipe in a roundabout way, heat is continuously released in the flowing process, heat exchange is realized, and finally the liquid refrigerant after heat release is discharged along the discharge pipe.

It should be explained that, because the device is provided with at least one group of baffle plates in the first collecting pipe and the second collecting pipe in a staggered way respectively, and the edges of the baffle plates are connected to the inner walls of the first collecting pipe and the second collecting pipe in a sealing way, under the action of the baffle plates, the refrigerant can flow in an S shape roundabout between the first collecting pipe and the second collecting pipe, and the refrigerant can enter from the conveying pipe and exit from the discharging pipe.

In addition, this device is owing to be provided with fixed establishment, it can realize the centre gripping fixed to a plurality of microchannel pipes in the flat pipe to make the both ends of microchannel pipe all extend to in the circulation groove of seting up in first pressure manifold, the second pressure manifold, avoided the refrigerant to appear the phenomenon of seepage, simultaneously owing to be provided with locking Assembly, can guarantee that the tip fixed connection of flat pipe is on first pressure manifold, the second pressure manifold of both sides, thereby further guaranteed the stability and the fastness that the first pressure manifold of hot side channel pipe and first pressure manifold, second pressure manifold are connected.

Preferably, the flat tube is internally provided with a placing groove capable of accommodating the micro-channel tube, and the clamping assembly comprises: the device comprises a flat tube, a placing groove, a sinking groove, an annular sleeve, a plurality of clamping blocks, a reset spring, a micro-channel tube and a micro-channel tube, wherein the sinking groove is arranged at two ends of the flat tube and is communicated with the placing groove; in this scheme, microchannel pipe inserts the standing groove by the one end of flat pipe in the installation, and a plurality of grip blocks of tip extrusion of microchannel pipe makes it remove and contradict on the outer wall of microchannel pipe towards annular external member direction (under the free state, the interval between a plurality of grip blocks is less than the aperture of standing groove), and reset spring compresses its resilience ability promotion grip block and closely laminates on the outer wall of microchannel pipe simultaneously, realizes the stable centre gripping to the microchannel pipe, avoids it to appear becoming flexible or take off from first collecting pipe, second collecting pipe in the during operation.

Preferably, the locking assembly includes: the installation frames are fixedly installed in the installation grooves, a plurality of first clamping blocks are fixedly connected to the inner walls of two opposite sides of the installation frames at equal intervals along the length of the installation frames, the end parts of the flat pipes are accommodated in the installation frames, second clamping blocks are inserted between every two adjacent first clamping blocks in transition fit, the second clamping blocks are fixedly connected to the outer walls of the flat pipes, and the end parts of the micro-channel pipes penetrate through slotted holes formed in the inner walls of the installation grooves and extend into circulation grooves formed in the first collecting pipes and the second collecting pipes; in this scheme, when installing flat pipe, with the fixed joint of installing frame in the mounting groove, then, insert the tip of flat pipe towards the installing frame in for every second joint piece all inserts between two adjacent first joint pieces, in inserting the in-process, the tip of microchannel pipe inserts in the circulation groove along the slotted hole, so that realize with the intercommunication between the circulation groove, make things convenient for the normal flow of follow-up refrigerant.

It is to be explained that, because the transition fit between first joint piece and the second joint piece, can not produce the gap between the two, simultaneously because of the great two can not take place to break away from of frictional force, reducible fastener such as bolt's use has improved the installation effectiveness to flat pipe in addition, also is convenient for follow-up quick dismantlement.

Preferably, the packaging strip for fixing the second clamping block is further provided with: the two ends of the strip-shaped plate extend to the other two side walls of the mounting frame respectively, are integrally and fixedly connected with connecting blocks, and each connecting block is internally penetrated with a locking bolt, wherein the threaded section of the locking bolt is in threaded connection with a corresponding mounting hole formed in the outer wall of the mounting frame; in this scheme, after flat pipe fixed connection is in the installing frame (after first joint piece and second joint piece are connected), laminate the strip shaped plate on the installing frame surface of first joint piece front side (towards flat pipe direction one side) to make the connecting block at its both ends correspond the mounting hole of seting up on the installing frame outer wall, the screw thread section of price locking bolt passes in the mounting hole after the connecting block later threaded connection, realize the installation fixed to the encapsulation strip, can further guarantee through the encapsulation strip that the second joint piece can not break away from first joint piece, also guaranteed the compactness of technique An Lina sister of first joint piece and second joint piece simultaneously.

Preferably, a plurality of guide strips which are spirally extended and distributed are formed on the inner peripheral wall of the micro-channel tube along the length of the micro-channel tube, and the guide strips are equiangularly distributed on the inner wall of the micro-channel tube; in this scheme, can be to the refrigerant that flows in the microchannel pipe and retrograde the direction through setting up a plurality of water conservancy diversion strips that are heliciform extension and distribute, on the one hand can guarantee that it is abundant and external contact to realize the quick conversion of heat, on the other hand when the microchannel pipe of refrigerant flow middle part or afterbody, partial gaseous refrigerant can be converted into liquid refrigerant, when gas-liquid mixture flows, can produce great noise, through the guide of this water conservancy diversion strip, gas/liquid refrigerant can not produce great separation when flowing, can avoid the production of noise, thereby reduce the noise pollution that this device during operation produced.

Preferably, the first collecting pipe and the second collecting pipe are further provided with connecting pieces for realizing the stability between the connecting pieces and the linked objects, wherein the connecting pieces at least comprise a first connecting bracket and a second connecting bracket which are arranged on the first collecting pipe and the second collecting pipe; in this scheme, can guarantee the stability when this device installs through setting up two at least group's linking bridge to avoid this device to take place to drop or follow the condition that breaks away from on the installed object to appear after long-time the use.

Compared with the prior art, the utility model has the beneficial effects that: the utility model relates to a micro-channel water heater, which comprises:

1. this device is through setting up the centre gripping subassembly at flat pipe both ends to the convenience is fixed its inside microchannel pipe, prevents that microchannel pipe and the first pressure manifold in both sides, second pressure manifold from taking place to break away from when installation and follow-up use, and then has guaranteed the smooth circulation of this device refrigerant in the operation process, provides favourable guarantee for the normal heat transfer of this device.

2. The device is provided with the locking assemblies on the side walls of the first collecting pipe and the second collecting pipe at two sides, and can fix the end parts of the flat pipes, so that the micro-channel pipes in the flat pipes are firmly communicated with the circulating grooves, leakage of the refrigerant in the transmission process is further avoided, and waste of resources is effectively avoided.

3. The device can guide the refrigerant in the gas-liquid mixing state by arranging the guide strips which are spirally distributed, so that the separation of the gaseous refrigerant and the liquid refrigerant in the transmission process is prevented, and the occurrence of noise pollution is further prevented.

Drawings

FIG. 1 is a front view of the present utility model;

FIG. 2 is a side view of the present utility model;

FIG. 3 is a front cross-sectional view of a flattened tube in accordance with the present utility model;

FIG. 4 is a side view of a flattened tube in accordance with the present utility model;

FIG. 5 is an enlarged view of a portion of the structure of FIG. 4A in accordance with the present utility model;

FIG. 6 is a schematic view of a mounting frame of the present utility model;

fig. 7 is a partial cross-sectional view of a header in the present utility model;

FIG. 8 is a side view of a microchannel tube of the present utility model;

in the figure:

1. a first header; 11. a delivery tube; 12. a first connection bracket;

2. a second header; 21. a discharge pipe; 22. a second connection bracket;

3. a flat tube; 31. a placement groove;

4. a microchannel tube; 41. a flow guiding strip;

5. a fixing mechanism; 51. a clamping assembly; 511. sinking grooves; 512. an annular sleeve; 513. a clamping block; 514. a return spring; 52. a locking assembly; 521. a mounting groove; 522. a mounting frame; 523. a first clamping block; 524. a second clamping block; 525. a slot hole; 53. packaging strips; 531. a strip-shaped plate; 532. a connecting block; 533. a locking bolt.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown.

The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model.

All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1-8, the present utility model provides a technical solution: a microchannel water heater comprising: the vertical symmetrical first collecting pipe 1 and the second collecting pipe 2 that set up, dislocation intercommunication has conveyer pipe 11, discharge tube 21 on first collecting pipe 1, the second collecting pipe 2, has a plurality of flat pipes 3 along vertical equidistant distribution between first collecting pipe 1 and the second collecting pipe 2, all is provided with at least one microchannel pipe 4 in every flat pipe 3, and fixed establishment 5 has: the clamping assemblies 51 are arranged at two ends of the flat tube 3, are clamped and fixed on the outer sides of the micro-channel tubes 4, and the locking assemblies 52 are arranged on opposite side walls of the first collecting tube 1 and the second collecting tube 2, and are used for realizing the installation and fixation of the end parts of the flat tube 3.

Further, the flat tube 3 is provided with a placement groove 31 for accommodating the microchannel tube 4, and the clamping assembly 51 includes: the sinking groove 511 that just is linked together with standing groove 31 in flat tub 3 both ends is seted up, and sinking groove 511 internal fixation has annular external member 512, and the inboard of annular external member 512 is provided with a plurality of mutual symmetric distribution's grip block 513, and a plurality of grip blocks 513 are annular equiangular distribution, and the outside perisporium of every grip block 513 all is connected through reset spring 514 with the inboard perisporium of annular external member 512, and the inboard perisporium of a plurality of grip blocks 513 is contradicted on the outer wall of microchannel pipe 4.

Specifically, the annular sleeve 512 may be fixedly mounted on the inner wall of the immersion groove 511 by means of welding, so as to enhance the firmness between the clamping assembly 51 and the flat tube 3, and avoid the situation that the clamping assembly 51 falls off when the microchannel tube 4 is assembled.

Further, the locking assembly 52 includes: the installation frame 522 is fixedly installed in each installation groove 521, the installation frames 522 are fixedly connected with a plurality of first clamping blocks 523 which are equidistant along the length of the installation frames 522 on the inner walls of two opposite sides of the installation frames 522, the end parts of the flat pipes 3 are accommodated in the installation frames 522, the second clamping blocks 524 are inserted between the two first clamping blocks 523 which are adjacently arranged in a transition fit manner, the second clamping blocks 524 are fixedly connected to the outer walls of the flat pipes 3, wherein the end parts of the micro-channel pipes 4 penetrate through slotted holes 525 formed in the inner walls of the installation grooves 521 and extend into circulation grooves formed in the first collecting pipes 1 and the second collecting pipes 2.

Specifically, in order to ensure that the gaseous refrigerant and the liquid refrigerant smoothly enter the micro-channel tube 4, two ends of the micro-channel tube 4 are respectively inserted into the slots 525 on the corresponding sides and are flush with the opening positions of the slots 525, and meanwhile, the outer wall of the end part of the micro-channel tube 4 can be further wrapped with a sealing ring made of rubber material, and a gap between the micro-channel tube 4 and the slots 525 can be sealed by the sealing ring, so that the refrigerant is prevented from leaking along the gap.

Further, a packaging strip 53 for fixing the second clamping block 524 is further included, which has: the two ends of the strip-shaped plate 531 extend to the other two side walls of the mounting frame 522 respectively, and are fixedly connected with connecting blocks 532 in an integrated manner, and each connecting block 532 is internally penetrated with a locking bolt 533, wherein the threaded section of the locking bolt 533 is screwed into a corresponding mounting hole formed on the outer wall of the mounting frame 522.

Specifically, in other embodiments, in order to facilitate quick assembly of the packaging strip 53, the connecting blocks 532 on two sides may be integrally formed on the side wall of the mounting frame 522 near the connecting blocks, and at the corresponding position on the mounting frame 522, slots are provided for plugging with the above-mentioned inserting blocks, so that the inserting blocks are inserted into the slots to be clamped during actual assembly, thereby realizing quick assembly of the packaging strip 53.

In addition, in some preferred embodiments, a first magnetic member may be installed at the insert block position, and a second magnetic member is disposed on the inner wall of the slot, where the first magnetic member and the second magnetic member are opposite in magnetism and magnetically attracted, so as to further enhance the stability of the packaging strip 53 during installation.

Further, a plurality of guide strips 41 extending spirally are formed along the length of the inner peripheral wall of the microchannel tube 4, and the plurality of guide strips 41 are equiangularly distributed on the inner wall of the microchannel tube 4.

Specifically, on the outer wall of the flow guiding strip 41 near the center of the micro-channel tube 4, a plurality of protrusions can be arranged at equal intervals along the length of the flow guiding strip, and the protrusions can play a role in certain turbulence, so that noise generated during the flow of the refrigerant is further reduced.

Furthermore, the first collecting pipe 1 and the second collecting pipe 2 are further provided with connecting pieces for realizing the stability between the connecting pieces and the linked objects, wherein the connecting pieces at least comprise a first connecting bracket 12 and a second connecting bracket 22 arranged on the first collecting pipe 1 and the second collecting pipe 2.

The working principle and the using flow of the utility model are as follows:

the microchannel tube 4 is inserted into the placing groove 31 from one end of the flat tube 3, two ends of the microchannel tube penetrate out of the flat tube 3, the end of the microchannel tube 4 penetrates through the clamping blocks 513 and pushes the clamping blocks 513 to move in the direction of the annular sleeve member 512, and meanwhile, the reset spring 514 is compressed under force and pushes the clamping blocks 513 to be tightly attached to the outer wall of the microchannel tube 4, so that the microchannel tube 4 is clamped and fixed;

the installation frame 522 is inserted into the installation groove 521, then the end part of the flat tube 3 is inserted into the installation frame 522 on the corresponding side, and meanwhile, the second clamping blocks 524 are inserted into gaps formed between the adjacent first clamping blocks 523, so that the end part of the flat tube 3 is fixed, after the flat tube 3 is fixed, the end part of the micro-channel tube 4 is communicated with the circulation groove along the groove holes 525, and the normal flow of the subsequent refrigerants is conveniently realized.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (6)

1. A microchannel water heater, characterized in that: comprising the following steps:

the device comprises a first collecting pipe (1) and a second collecting pipe (2) which are vertically and symmetrically arranged, wherein conveying pipes (11) and discharge pipes (21) are communicated with the first collecting pipe (1) and the second collecting pipe (2) in a staggered manner, a plurality of flat pipes (3) are longitudinally and equidistantly distributed between the first collecting pipe (1) and the second collecting pipe (2), and at least one micro-channel pipe (4) is arranged in each flat pipe (3);

a fixing mechanism (5) provided with:

the clamping assemblies (51) are arranged at two ends of the flat tube (3), are clamped and fixed on the outer sides of the micro-channel tubes (4), and the locking assemblies (52) are arranged on opposite side walls of the first collecting tube (1) and the second collecting tube (2), and are used for realizing the installation and fixation of the end parts of the flat tube (3) through the locking assemblies (52).

2. A microchannel water heater as set forth in claim 1, wherein: a placing groove (31) capable of accommodating the micro-channel tube (4) is formed in the flat tube (3), and the clamping assembly (51) comprises:

the sinking grooves (511) are formed in the two ends of the flat tube (3) and are communicated with the placing grooves (31), annular sleeve members (512) are fixedly installed in the sinking grooves (511), and a plurality of clamping blocks (513) which are symmetrically distributed are arranged on the inner sides of the annular sleeve members (512);

the clamping blocks (513) are distributed at equal angles in a ring shape, and the outer peripheral wall of each clamping block (513) is connected with the inner peripheral wall of the ring-shaped sleeve (512) through a reset spring (514);

the inner peripheral walls of the clamping blocks (513) are abutted against the outer walls of the microchannel tubes (4).

3. A microchannel water heater as set forth in claim 1, wherein: the locking assembly (52) includes:

the mounting grooves (521) are formed in the opposite side walls of the first collecting pipe (1) and the second collecting pipe (2) and correspond to the end parts of the flat pipes (3), and a mounting frame (522) is fixedly mounted in each mounting groove (521);

a plurality of first clamping blocks (523) are fixedly connected to inner walls of two opposite sides of the mounting frame (522) at equal intervals along the length of the inner walls, the end parts of the flat tubes (3) are accommodated in the mounting frame (522), second clamping blocks (524) are inserted between every two adjacent first clamping blocks (523) in transition fit, and the second clamping blocks (524) are fixedly connected to the outer walls of the flat tubes (3);

the end part of the micro-channel pipe (4) penetrates through a slotted hole (525) formed in the inner wall of the mounting groove (521) and extends into a circulation groove formed in the first collecting pipe (1) and the second collecting pipe (2).

4. A microchannel water heater as set forth in claim 3 wherein: also included is a packaging strip (53) for securing the second snap block (524), having:

the two ends of the strip-shaped plate (531) extend to the other two side walls of the mounting frame (522) respectively, and are integrally formed and fixedly connected with connecting blocks (532), and a locking bolt (533) penetrates through each connecting block (532);

the thread section of the locking bolt (533) is screwed into a corresponding mounting hole formed in the outer wall of the mounting frame (522).

5. A microchannel water heater as set forth in claim 1, wherein: and a plurality of guide strips (41) which are spirally extended and distributed are formed on the inner peripheral wall of the micro-channel tube (4) along the length of the micro-channel tube, and the guide strips (41) are equiangularly distributed on the inner wall of the micro-channel tube (4).

6. A microchannel water heater as set forth in claim 5, wherein: the first collecting pipe (1) and the second collecting pipe (2) are also provided with connecting pieces which are used for realizing the stability between the connecting pieces and the linked objects;

the connecting piece at least comprises a first connecting bracket (12) and a second connecting bracket (22) which are arranged on the first collecting pipe (1) and the second collecting pipe (2).