CN206891233U - Double-tube heat exchanger - Google Patents
Double-tube heat exchanger Download PDFInfo
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- CN206891233U CN206891233U CN201720754537.6U CN201720754537U CN206891233U CN 206891233 U CN206891233 U CN 206891233U CN 201720754537 U CN201720754537 U CN 201720754537U CN 206891233 U CN206891233 U CN 206891233U
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- pipe
- water
- heat exchanger
- double
- weakenings
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Abstract
The utility model discloses a kind of double-tube heat exchanger.Double-tube heat exchanger includes sleeve pipe, and sleeve pipe includes inner tube and the outer tube being sheathed on the outside of inner tube, and inner tube is water pipe, and sleeve pipe also includes the anti-freezing structure connected with water pipe, and anti-freezing structure includes weakenings, and weakenings are when sleeve pipe is endured cold prior to pipe burst.The sleeve pipe of double-tube heat exchanger of the present utility model is being endured cold when causing the water freezing in water pipe, because weakenings will be prior to pipe burst, therefore can discharge water pipe internal pressure, so as to play a part of anti-frost protection to water pipe.Double-tube heat exchanger of the present utility model breaks through conventional anti-frost protection method, and the effect of protection integral cannula is reached using local failure.And prompting, the timely draining of call user's attention are played a part of in the rupture of weakenings to user.
Description
Technical field
Field of heat exchangers is the utility model is related to, more particularly to a kind of double-tube heat exchanger.
Background technology
Double-tube heat exchanger is a kind of common heat transmission equipment, and the application in refrigeration plant is quite varied.Weighing sleeve pipe
During the performance of heat exchanger, its exchange capability of heat is seen incessantly, antifreeze ability also important appraisal standards.
The antifreeze method of prior art middle sleeve mainly has following several：1, using insulation material be incubated and antifreeze,
It is such as common in sleeve pipe outer wrapping heat-preservation cotton.2, electrical heat tracing, the circulating commercial hot water machine of directly-heated would generally be on water inlet pipe
Heating tape is coiled, when inflow temperature is less than a certain value, now heating tape may turn on, and avoid water pipe from freezing crack.The method power consumption
It is more.3, antifreeze by the mobility for strengthening water, the method requires that circulating pump is always on, therefore when generation power failure or pump event
During barrier, the method is entirely ineffective.4, compressible material is filled in water pipe, utilizes the compressibility compensation water freezing increase of material
Volume, so as to reduce the expansive force suffered by water pipe tube wall, but compressible material is filled in sleeve pipe, be easily caused cannula occlusion and
And it can also influence heat transfer effect.
Utility model content
The purpose of this utility model is to provide a kind of double-tube heat exchanger, to carry out anti-frost protection to sleeve pipe.
The utility model provides a kind of double-tube heat exchanger, including sleeve pipe, and sleeve pipe includes inner tube and is sheathed on the outside of inner tube
Outer tube, inner tube are water pipe, and sleeve pipe also includes the anti-freezing structure connected with water pipe, and anti-freezing structure includes weakenings, and weakenings are covering
Prior to pipe burst when pipe is endured cold.
Further, the material of weakenings and the material of water pipe is identical and the thickness of weakenings be less than water pipe tube wall thickness
Degree；Or the material of weakenings is different from the material of water pipe.
Further, anti-freezing structure includes the destruction branch pipe that is connected with water pipe, destroy branch pipe at least a portion formed it is weak
Change portion.
Further, destroy branch pipe and water pipe is detachably connected.
Further, destroying branch pipe includes branch pipe body and mouth-sealed portion, and the first end of branch pipe body connects with water pipe, sealing
Portion is hermetically covered in the second end of branch pipe body, and mouth-sealed portion forms weakenings.
Further, the end at the second end of branch pipe body forms the circular fold to radially inner side or outside bending, envelope
Oral area is connected on circular fold.
Further, the second end of mouth-sealed portion and branch pipe body is detachably connected, and destroys branch pipe also including being arranged at
Potted component between second end of branch pipe body and mouth-sealed portion.
Further, double-tube heat exchanger also includes being connected with external water source, for conveying the water inlet pipe of water for water pipe, preventing
Freeze structure to be arranged on water inlet pipe.
Further, anti-freezing structure is arranged at its close position with the junction of water pipe of water inlet pipe.
Further, sleeve pipe includes at least two inner tubes being arranged in parallel, and inner tube is water pipe, and water inlet pipe includes water inlet collector
Connected with water inlet collector and with least two inner tubes corresponding connection at least two isocons, anti-freezing structure is arranged at into Shui Ji
Guan Shang.
Based on double-tube heat exchanger provided by the utility model, when sleeve pipe causes the water freezing in water pipe enduring cold, due to
Weakenings will be prior to pipe burst, therefore can discharge water pipe internal pressure, so as to play a part of anti-frost protection to water pipe.This
The double-tube heat exchanger of utility model breaks through conventional anti-frost protection method, and the effect of protection integral cannula is reached using local failure
Fruit.And prompting, the timely draining of call user's attention are played a part of in the rupture of weakenings to user.
It is of the present utility model other by referring to the drawings to the detailed description of exemplary embodiment of the present utility model
Feature and its advantage will be made apparent from.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding to of the present utility model, forms the part of the application,
Schematic description and description of the present utility model is used to explain the utility model, does not form to of the present utility model improper
Limit.In the accompanying drawings：
Fig. 1 is the main structure diagram of the double-tube heat exchanger of the utility model first embodiment；
Fig. 2 is the overlooking the structure diagram of the double-tube heat exchanger shown in Fig. 1；
Fig. 3 is the partial enlargement structural representation of the side view in the M portions of the destruction branch pipe shown in Fig. 2；
Fig. 4 is the main structure diagram of the double-tube heat exchanger of the utility model second embodiment；
Fig. 5 is the overlooking the structure diagram of the double-tube heat exchanger shown in Fig. 4.
Each reference represents respectively：
1- water inlet pipes；11- water inlet collectors；12- isocons；2- destroys branch pipe；21- branch pipe bodys；22- mouth-sealed portions；6- is arranged
Water pipe；FI- refrigerant imports；FO- refrigerant exits；WI- water inlets；WO- delivery ports.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.The description only actually at least one exemplary embodiment is illustrative to be never used as to this practicality below
New and its application or any restrictions used.Based on the embodiment in the utility model, those of ordinary skill in the art are not having
There is the every other embodiment made and obtained under the premise of creative work, belong to the scope of the utility model protection.
Unless specifically stated otherwise, the part and positioned opposite, the digital table of step otherwise illustrated in these embodiments
Up to the unlimited the scope of the utility model processed of formula and numerical value.Simultaneously, it should be appreciated that each shown in accompanying drawing for the ease of description
The size of individual part is not to be drawn according to the proportionate relationship of reality.For skill known to person of ordinary skill in the relevant
Art, method and apparatus may be not discussed in detail, but in the appropriate case, the technology, method and apparatus should be considered as awarding
Weigh part for specification.In shown here and discussion all examples, any occurrence should be construed as merely example
Property, not as limitation.Therefore, the other examples of exemplary embodiment can have different values.It should be noted that：It is similar
Label and letter similar terms is represented in following accompanying drawing, therefore, once be defined in a certain Xiang Yi accompanying drawing, then with
It need not be further discussed in accompanying drawing afterwards.
For the ease of description, space relative terms can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be appreciated that space relative terms are intended to comprising the orientation except device described in figure
Outside different azimuth in use or operation.For example, if the device in accompanying drawing is squeezed, it is described as " in other devices
It will be positioned as " under other devices or construction after the device of part or construction top " or " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " can include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (being rotated by 90 ° or in other orientation), and
And respective explanations are made to the relative description in space used herein above.
Below will be first right before the concrete structure of the double-tube heat exchanger of the utility model embodiment is described in detail
The rupture event of enduring cold of state change principle and sleeve pipe during water freezing illustrates.
Water has a three-phase state, and the water under normal temperature is in liquid, and when water temperature reaches the freezing point (0 DEG C), now water starts to tie
Ice.The density of water is 1g/cm3, and the density of ice is 0.9g/cm3, therefore the water of phase homogenous quantities is after liquid is converted to solid-state, body
Product increase about 10%, that is to say, that if water is completely filled with inside the water pipe of sleeve pipe, then the water in water pipe is after enduring cold
When being changed into solid-state by liquid, the excess room of water pipe needs extra 10% carrys out the increase of the volume of compensation water, and in fact this is
It is difficult to accomplish, so the pressure for just needing by other means release volumetric expansion to bring is increased sharply.
Molecular structure angle chemically is analyzed, hydrone (H2O it is) a tetrahedral microcrystalline texture, with
The rise of temperature, this structure are gradually destroyed, and disorderly arranged between molecule is increased, and increases the density of water.But simultaneously
With the rise of temperature, molecular thermalmotion aggravation can be such that the spacing between hydrone gradually increases, and reduce the density of water.Therefore
The density of water as how the change of temperature changes, destroy and which of molecular thermalmotion the two factors by structure to be depended on
Factor is in leading role.At more than 4 DEG C, the influence of the warm-up movement of molecule to density is in leading role, so now water is in
Reveal the property of " expanding with heat and contract with cold "；At 0~4 DEG C, the influence that structure destroys to density is in leading position, so now water is presented
Go out the property of " pyrocondensation cold expanding ".
When the water in the water pipe of sleeve pipe is stood for a long time to be in low temperature environment, water temperature is gradually lowered to approach since most
Environment temperature, but the water temperature inside water pipe does not change synchronously uniformly.According to analysis above, water has when close to 0 DEG C
There is the property of pyrocondensation cold expanding, that is to say, that the higher water density of temperature is bigger, and the lower water density of temperature is smaller, the small water of density
It is invariably prone to toward water pipe ionized motion, therefore the water temperature above water pipe will be generally below bottom, so the knot of water pipe internal water
Ice order should be from top to bottom.Water above water pipe starts to freeze, and the water that will make not freeze also is accumulated toward the bottom of water pipe,
When the bottom of water pipe finally freezes, accumulative pressure is very big, if can not now discharge in time, will result in bottom
It is split up.
Analyzed based on more than, a kind of technical scheme for rupture of being endured cold the utility model proposes brand-new protection sleeve pipe water pipe,
Reduction water pipe, which is endured cold, deforms the probability of even bursting by freezing.Below by the structure of the double-tube heat exchanger of the utility model specific embodiment
It is described in detail.
The double-tube heat exchanger of the utility model embodiment includes sleeve pipe.Sleeve pipe includes inner tube and is sheathed on outer on the outside of inner tube
Pipe, inner tube is water pipe.Sleeve pipe also includes the anti-freezing structure connected with water pipe.Anti-freezing structure includes weakenings, and weakenings are in sleeve pipe
Prior to pipe burst when enduring cold.When the sleeve pipe of the utility model embodiment causes the water freezing in water pipe enduring cold, due to weak
Change portion will be prior to pipe burst, therefore can discharge water pipe internal pressure, so as to play a part of anti-frost protection to water pipe.This reality
Conventional anti-frost protection method is broken through with the double-tube heat exchanger of new embodiment, protection integral cannula is reached using local failure
Effect.And prompting, the timely draining of call user's attention are played a part of in the rupture of weakenings to user.
In order that weakenings prior to pipe burst, can make the material of weakenings and the material of water pipe when sleeve pipe is endured cold
Expect that thickness that is identical and making weakenings is less than the thickness of the tube wall of water pipe.Can also make weakenings material and water pipe material not
Together.For example, water pipe can be made to be copper pipe, and weakenings are relative to the bigger other materials of copper brittleness, such as plastics etc..
The structure of the double-tube heat exchanger of the utility model specific embodiment is described in detail below according to Fig. 1 to Fig. 5.
First embodiment
The double-tube heat exchanger of the present embodiment includes inner tube and the outer tube being sheathed on the outside of inner tube.Inner tube is water pipe, inside it
Circulate water, and circulate refrigerant between outer tube and inner tube.As depicted in figs. 1 and 2, in the present embodiment, refrigerant enters from refrigerant import FI
Enter between outer tube and inner tube and flow out sleeve pipe from refrigerant exit FO.Water enters in outer tube from water inlet WI and flowed out from delivery port WO
Outer tube.Water inlet WI is in the bottom of water pipe.
In the present embodiment, as shown in figure 1, anti-freezing structure includes the destruction branch pipe 2 connected with water pipe.Destroy branch pipe 2
At least a portion forms weakenings.The anti-freezing structure of the present embodiment is arranged to be formed the destruction branch pipe 2 of the branch road of water pipe, therefore position
It is whole without influenceing water pipe as long as changing weakenings when the rupture of the weakenings on branch pipe 2 is destroyed or destroying branch pipe entirety
The structure of body, therefore the anti-freezing structure of the present embodiment is easy to use and cost is relatively low.
Because the icing order of the water pipe internal water of sleeve pipe is from top to bottom.Therefore in order to prevent the water pipe of sleeve pipe from enduring cold
When entirely rupture, anti-freezing structure can be arranged to the position connected with the bottom of water pipe.
Specifically, the double-tube heat exchanger of the present embodiment includes being connected with external water source for conveying the water inlet of water for water pipe
The water inlet WI of pipe 1 and water pipe is in the bottom of water pipe.Therefore branch pipe 2 can will be destroyed to be arranged on water inlet pipe 1.Destroy branch pipe 2
Connected by water inlet pipe 1 with water pipe, therefore when sleeve pipe is endured cold and causes the water freezing in water pipe, the reduction on destruction branch pipe 2
Portion also can be discharged pressure, so as to protection sleeve pipe by expansive force because prior to water pipe rupture can occur for weakenings.
In the present embodiment, as shown in Fig. 2 destroying branch pipe 2 includes branch pipe body 21 and mouth-sealed portion 22.Branch pipe body 21
First end is connected with water inlet pipe 1, and mouth-sealed portion 22 is hermetically covered in the second end of branch pipe body 21, and mouth-sealed portion 22 forms reduction
Portion.For mouth-sealed portion 22 when being ruptured by expansive force, user can only change mouth-sealed portion, simple to operate.
Preferably, the second end of mouth-sealed portion 22 and branch pipe body 21 is detachably connected, and destroys branch pipe 1 also including setting
Potted component between the second end of branch pipe body 21 and mouth-sealed portion 22.Mouth-sealed portion 22 is arranged so that after rupture, only
The mouth-sealed portion 22 that the mouth-sealed portion 22 of rupture is removed from branch pipe body 21 and more renewed, safeguard simple and convenient.
The material of mouth-sealed portion 22 can be identical with the material of water pipe, can also be different from the material of water pipe.For example, work as water pipe
For copper pipe when, mouth-sealed portion can be the copper sheet or aluminium flake, plastic sheet etc. thinner than the tube wall of copper pipe, as long as can be
Water pipe is split up in time when freezing.Now, the material of branch pipe body 21 can be identical with the material of water pipe, such as can make
During standby water inlet pipe, the connecting branch body directly on water inlet pipe.
Specifically, as shown in figure 3, the end at the second end of branch pipe body 21 forms the annular folding to radially inner side bending
Side, mouth-sealed portion 22 are connected on circular fold.The setting of circular fold cause between mouth-sealed portion 22 and branch pipe body 21 have compared with
It big contact area, can preferably ensure the bonding strength of mouth-sealed portion 22 and branch pipe body 21, and then ensure the closing of water pipe
Property.
In the present embodiment, O-ring seal and uniform multiple in the circumferential is set between mouth-sealed portion 22 and circular fold
Screw ensures the normal work of sleeve pipe to be sealed to ensure sealing of the water pipe in normal work.
In a unshowned embodiment of accompanying drawing, it can also make entirely to destroy branch pipe formation weakenings or make branch pipe pipe
Body forms weakenings, can now make destruction branch pipe and water inlet pipe detachably connected.When sleeve pipe is endured cold, branch pipe is entirely destroyed
Or branch pipe body first occurs rupture in the presence of the bulbs of pressure and protects water pipe.
In order that anti-freezing structure can experience the expansive force of water pipe inner icing when enduring cold in time, can be by anti-freezing structure
It is arranged at its close position with the junction of water pipe of water inlet pipe.Now, the position of the water inlet of anti-freezing structure and water pipe is more
Closely, therefore anti-freezing structure and the expansive force suffered by water pipe are closer, can in time be ruptured when by expansive force and discharge pressure
Power.
Second embodiment
In the present embodiment, sleeve pipe includes two inner tubes being arranged in parallel.That is, outer tube is set in two
Pipe.As shown in Figure 4 and Figure 5, unlike first embodiment, the set location of the destruction branch pipe of the present embodiment is different.
Specifically, in the present embodiment, water inlet pipe 1 includes water inlet collector 11 and is connected with water inlet collector 11 and with least two
At least two isocons 12 of the corresponding connection of individual inner tube, anti-freezing structure are arranged in water inlet collector 11.Anti-freezing structure is arranged at
Can carries out anti-frost protection to two water pipes simultaneously in water inlet collector 11 so that the structure of double-tube heat exchanger is simple.
As shown in Figure 4 and Figure 5, the side of water inlet collector 11 is provided with drainpipe 6.When the mouth-sealed portion for destroying branch pipe 2 exists
After being ruptured by expansive force, user can carry out draining by drainpipe 6 to water pipe.
Annexation, function, effect between other unaccounted each parts of second embodiment and each part etc. can join
According to first embodiment.
Finally it should be noted that：Above example is only illustrating the technical solution of the utility model rather than it is limited
System；Although the utility model is described in detail with reference to preferred embodiment, those of ordinary skill in the art should
Understand：Specific embodiment of the present utility model can still be modified or some technical characteristics are equally replaced
Change；Without departing from the spirit of technical solutions of the utility model, it all should cover in the claimed technical scheme of the utility model
Among scope.
Claims (10)
1. a kind of double-tube heat exchanger, including sleeve pipe, described sleeve pipe includes inner tube and the outer tube being sheathed on the outside of said inner tube, described
Inner tube is water pipe, it is characterised in that described sleeve pipe also includes the anti-freezing structure connected with the water pipe, and the anti-freezing structure includes
Weakenings, the weakenings are when described sleeve pipe is endured cold prior to the pipe burst.
2. double-tube heat exchanger according to claim 1, it is characterised in that the material of the material of the weakenings and the water pipe
Expect that the thickness of identical and described weakenings is less than the thickness of the tube wall of the water pipe；Or the material of the weakenings with it is described
The material of water pipe is different.
3. double-tube heat exchanger according to claim 1, it is characterised in that the anti-freezing structure includes connecting with the water pipe
Destruction branch pipe (2), it is described destroy branch pipe (2) at least a portion form the weakenings.
4. double-tube heat exchanger according to claim 3, it is characterised in that the destruction branch pipe (2) and the water pipe are removable
Connect with unloading.
5. double-tube heat exchanger according to claim 3, it is characterised in that the destruction branch pipe (2) includes branch pipe body
(21) connected with mouth-sealed portion (22), the first end of the branch pipe body (21) with the water pipe, the mouth-sealed portion (22) is hermetically
The second end of the branch pipe body (21) is covered in, the mouth-sealed portion (22) forms the weakenings.
6. double-tube heat exchanger according to claim 5, it is characterised in that the end at the second end of the branch pipe body (21)
The circular fold to radially inner side or outside bending is formed, the mouth-sealed portion (22) is connected on the circular fold.
7. double-tube heat exchanger according to claim 5, it is characterised in that the mouth-sealed portion (22) and the branch pipe body
(21) the second end is detachably connected, and the destruction branch pipe (2) also includes being arranged at the second of the branch pipe body (21)
Potted component between end and the mouth-sealed portion (22).
8. double-tube heat exchanger according to any one of claim 1 to 7, it is characterised in that described sleeve pipe heat exchanger also wraps
Include and be connected with external water source for conveying the water inlet pipe (1) of water for the water pipe, the anti-freezing structure is arranged at the water inlet
Guan Shang.
9. double-tube heat exchanger according to claim 8, it is characterised in that the anti-freezing structure is arranged at the water inlet pipe
(1) its close position with the junction of the water pipe.
10. double-tube heat exchanger according to claim 8, it is characterised in that described sleeve pipe includes at least two be arranged in parallel
Individual inner tube, said inner tube are water pipe, the water inlet pipe include water inlet collector (11) and be connected with the water inlet collector (11) and with
At least two isocons (12) of the corresponding connection of at least two inner tube, the anti-freezing structure are arranged at the water inlet collector
(11) on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720754537.6U CN206891233U (en) | 2017-06-27 | 2017-06-27 | Double-tube heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720754537.6U CN206891233U (en) | 2017-06-27 | 2017-06-27 | Double-tube heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206891233U true CN206891233U (en) | 2018-01-16 |
Family
ID=61315677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720754537.6U Active CN206891233U (en) | 2017-06-27 | 2017-06-27 | Double-tube heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206891233U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107131780A (en) * | 2017-06-27 | 2017-09-05 | 珠海格力电器股份有限公司 | Double-tube heat exchanger |
-
2017
- 2017-06-27 CN CN201720754537.6U patent/CN206891233U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107131780A (en) * | 2017-06-27 | 2017-09-05 | 珠海格力电器股份有限公司 | Double-tube heat exchanger |
| CN107131780B (en) * | 2017-06-27 | 2023-11-24 | 珠海格力电器股份有限公司 | Double-pipe heat exchanger |
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