CN115977966A - Intelligent absorption type heat exchange device - Google Patents
Intelligent absorption type heat exchange device Download PDFInfo
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- CN115977966A CN115977966A CN202211561465.5A CN202211561465A CN115977966A CN 115977966 A CN115977966 A CN 115977966A CN 202211561465 A CN202211561465 A CN 202211561465A CN 115977966 A CN115977966 A CN 115977966A
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 41
- 239000013078 crystal Substances 0.000 claims abstract description 19
- 239000006096 absorbing agent Substances 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000001133 acceleration Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 238000002425 crystallisation Methods 0.000 abstract description 12
- 230000008025 crystallization Effects 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 5
- 238000005336 cracking Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 51
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 36
- 239000008236 heating water Substances 0.000 description 8
- 239000000498 cooling water Substances 0.000 description 7
- 238000005057 refrigeration Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 239000002250 absorbent Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000002730 additional effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000008234 soft water Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses an intelligent absorption type heat exchange device which comprises an absorber, a delivery pump, a generator, a condenser, an expansion valve and an evaporator which are connected through a pipeline, wherein the delivery pump comprises a pump shaft and an impeller connected with the pump shaft, the impeller is arranged on a sleeve, a first tooth-shaped part is arranged on the pump shaft, and a second tooth-shaped part is arranged on the sleeve; also included is an elastic member that provides the delivery pump with: in the first state, the pump shaft drives the sleeve to rotate through the meshing of the first tooth-shaped part and the second tooth-shaped part; in the second state, the sleeve is crystal-restricted and the pump shaft idles relative to the sleeve. According to the intelligent absorption type heat exchange device provided by the invention, when the pump shaft and the impeller are limited by the crystallization and can not rotate, the power of the conveying pump is enough to drive the pump shaft limited by the crystallization, and the probability of damage to the conveying pump is greatly reduced as the pump shaft continues to rotate. And in the process of rotating the pump shaft, the first tooth-shaped part and the second tooth-shaped part frequently impact and vibrate, so that the cracking speed of crystals on the impeller is greatly increased.
Description
Technical Field
The invention relates to a refrigeration technology, in particular to an intelligent absorption type heat exchange device.
Background
As is well known, the conventional air conditioner has a large energy consumption due to the adoption of a compressor as a core power, and in recent years, an absorption heat exchange refrigeration system without a compressor is gradually and widely used in the fields of solar energy, thermal power plants and the like due to the quietness, environmental protection, energy conservation and capability of using low-grade heat energy. The absorption heat exchange system generally comprises four parts, namely an absorber, a generator, a condenser and an evaporator, and most commonly, the absorption heat exchange system takes lithium bromide solution as an absorbent and water as a refrigerant and utilizes the evaporation and heat absorption of the water under high vacuum to achieve the aim of refrigeration.
For example, the invention discloses an authorized announcement No. CN109737637B, entitled "an energy-saving system for a lithium bromide absorption refrigerator" which is entitled as an invention patent in 10-30.2020, which comprises at least one hot water supply heat pump, a first heating water source heat pump, a second heating water source heat pump, a heat collection water tank, a cooling water tank and a lithium bromide absorption refrigerator set, wherein the hot water supply heat pump, the first heating water source heat pump and the second heating water source heat pump are arranged in parallel, the hot water supply heat pump and the first heating water source heat pump are used for extracting an external heat source to exchange heat with a user side water source and then conveying the user side hot water to the heat collection water tank for storage, the second heating water source heat pump is used for extracting a condensation outlet of the lithium bromide absorption refrigerator set to convey the heat source to exchange heat with the user side water source and then convey the user side hot water to the heat collection water tank for storage, and convey cooling water after side heat exchange to the cooling water tank for storage, the water replenishing ports of the heat collecting water tank and the cooling water tank are connected with an external soft water system through pipelines and water replenishing valves arranged on the pipelines, water from a circulating water outlet of the heat collecting water tank is conveyed to the user side of a hot water supply heat pump through the pipelines and pipeline accessories which are arranged on the pipelines and comprise a heat collecting water tank heating circulating water pump, a water outlet of the heat collecting water tank is connected with the hot water side of a lithium bromide absorption refrigerating unit through the pipelines and the pipeline accessories which are arranged on the pipelines and comprise a lithium bromide hot water side circulating water pump, hot water conveyed by the water outlet of the heat collecting water tank is conveyed to the user sides of a first heating water source heat pump and a second heating water source heat pump through cold water after heat exchange of the hot water side of the lithium bromide absorption refrigerating unit, a water outlet of the cooling water tank is connected with a cold water port of the lithium bromide absorption refrigerating unit through the pipelines and the pipeline accessories which are arranged on the pipelines and comprise a cooling water circulating water pump, the refrigeration side of the lithium bromide absorption refrigerating unit is connected with the cold supply tail end through a pipeline and a pipeline accessory which is arranged on the pipeline and comprises an air conditioner cold supply circulating water pump so as to supply water to the tail end of the air conditioner for heat exchange refrigeration.
The utility model provides a lithium bromide that utilizes low-grade heat energy absorbs heat transfer refrigerating plant, the shortcoming of prior art lies in, when heating energy pressure is too high, the cooling water temperature is too low, or when there are a plurality of reasons such as non-condensable gas in the unit, all can take place the lithium bromide crystallization in the pipeline, though rely on the crystallizer, steam or steam condensate water to carry out the heat transfer and can carry out melting of crystallization, but the impeller of delivery pump is fixed by the crystallization, in the in-process that the crystallization melts, the delivery pump need repeated start-up in order to confirm whether melt in place, and because the delivery pump in the refrigerating system generally uses the canned motor pump, the canned motor pump can't the naked eye observation pump shaft has rotated, can only rely on the front and back manometer of observing the canned motor pump to confirm, this problem that brings is exactly, the start button of delivery pump has been pressed, but the pump shaft is by the crystallization card and die and can's rotation, this has promoted the canned motor pump probability of damaging greatly, lead to other fields far away frequent maintenance.
Disclosure of Invention
The invention aims to provide an intelligent absorption type heat exchange device to overcome the defects in the prior art.
In order to achieve the above purpose, the invention provides the following technical scheme:
an intelligent absorption type heat exchange device comprises an absorber, a delivery pump, a generator, a condenser, an expansion valve and an evaporator which are connected through pipelines, wherein the delivery pump comprises a pump shaft and an impeller connected with the pump shaft,
the impeller is arranged on a sleeve, a first tooth-shaped part is arranged on the pump shaft, and a second tooth-shaped part is arranged on the sleeve; further comprising an elastic member that makes the delivery pump have:
in a first state, the pump shaft drives the sleeve to rotate through the meshing of the first tooth-shaped part and the second tooth-shaped part;
in a second state, the sleeve is crystal-limited and the pump shaft is idle relative to the sleeve.
When the intelligent absorption heat exchange device is switched between the first state and the second state, the pump shaft axially moves.
In the above intelligent absorption heat exchanger, the pump shaft includes a first section and a second section, the ends of which are sleeved with each other, the sleeve is connected to the first section,
when the first state and the second state are switched, the first section moves axially relative to the second section.
In the intelligent absorption heat exchange device, the elastic member is sleeved on the first spring on the pump shaft, one end of the first spring is fixedly connected to the first radial ring on the first section, and the other end of the first spring is fixedly connected to the second radial ring on the second section.
In the intelligent absorption heat exchange device, the end part of the first section, which is far away from the second section, is provided with a plurality of cutting edges in a rotating manner, and the cutting edges are positioned in the liquid inlet channel of the impeller.
In the above intelligent absorption heat exchanger, the end of the cutting edge is movably connected to the first segment so that the cutting edge moves from being attached to the sleeve to a direction away from the sleeve along with the acceleration of the rotation of the first segment.
In the above-mentioned intelligent absorption heat exchanger, the edge face of the cutting edge is obliquely arranged relative to the radial face of the first section so that the cutting edge linearly cuts the crystal during the rotation of the cutting edge.
When the intelligent absorption heat exchange device is switched between the first state and the second state, the sleeve moves axially.
In the above intelligent absorption heat exchanger, the impeller includes a disk body, and the disk body includes a central cylinder, two disks arranged on the central cylinder and in parallel relatively, and a plurality of blades arranged between the two disks;
the sleeve is connected to the central cylinder in a sliding mode, and meanwhile the elastic piece is connected between the sleeve and the central cylinder.
In the intelligent absorption heat exchanger, the end of the pump shaft is provided with the first tooth-shaped part, one end of the sleeve is a closed end, the inner wall of the closed end is provided with the second tooth-shaped part, the open end of the sleeve is provided with the protruding column, and the protruding column is inserted into the transmission hole in the central cylinder;
in the first state, the sleeve drives the central cylinder through the protruding columns;
in the second state, the protruding post is disengaged from the drive aperture.
In the technical scheme, when the pump shaft and the impeller are limited by crystallization and can not rotate, the pump shaft and the sleeve move relatively to enter a second state through axial movement, the pump shaft idles, the impeller does not move, the outer surface of the pump shaft is far smaller than that of the impeller, the power of the conveying pump is enough to drive the pump shaft limited by crystallization, and the probability of damage to the conveying pump is greatly reduced as the pump shaft rotates continuously.
And moreover, the first tooth-shaped part and the second tooth-shaped part frequently impact and vibrate in the rotating process of the pump shaft, so that the cracking speed of crystals on the impeller is greatly accelerated, and the starting speed of the canned motor pump is increased.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a schematic diagram of a pump shaft and impeller configuration according to one embodiment of the present invention;
FIG. 2 is a schematic diagram of a pump shaft and an impeller according to another embodiment of the present invention;
FIG. 3 is a schematic structural view of a pump shaft and an impeller according to yet another embodiment of the present invention;
fig. 4 is a schematic structural diagram of a pump shaft and an impeller according to still another embodiment of the present invention.
Description of the reference numerals:
1. a pump shaft; 1.1, a first tooth-shaped part; 1.2, a first section; 1.21, radial disk; 1.3, a second section; 2. an impeller; 2.1, a central cylinder; 2.2, a disc; 2.3, blades; 3. a sleeve; 3.1, a second tooth-shaped part; 3.2, protruding columns; 4. an elastic member; 5. a first radial ring; 6. a second radial ring; 7. a cutting edge; 8. a fourth radial ring; 9. a second spring.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
In each embodiment of the invention, the intelligent absorption type heat exchange device refers to an absorption type refrigeration system which takes water as a refrigerant and takes a lithium bromide water solution as an absorbent, and the structure of the system comprises an evaporator, a condenser, a generator, a delivery pump, an expansion valve, an evaporator and the like, wherein the delivery pump is a shield pump and is used for delivering the solution in the absorber to the generator. The evaporator is a high vacuum container, the evaporation of water can make refrigerant water in the tube release heat to cool to obtain cold, the generated water vapor flows into the absorber, the lithium bromide concentrated solution pumped by the absorber has the capacity of absorbing water, and the lithium bromide concentrated solution is contacted with the water vapor to absorb the water vapor to form a dilute solution.
As shown in fig. 1-4, an intelligent absorption heat exchanger according to an embodiment of the present invention includes an absorber, a delivery pump, a generator, a condenser, an expansion valve, and an evaporator, which are connected to each other through a pipeline, where the delivery pump includes a pump shaft 1 and an impeller 2 connected to the pump shaft 1, the impeller 2 is disposed on a sleeve 3, the pump shaft 1 is provided with a first tooth-shaped portion 1.1, and the sleeve 3 is provided with a second tooth-shaped portion 3.1; further comprising an elastic element 4, said elastic element 4 being such that said delivery pump has: in a first state, the pump shaft 1 drives the sleeve 3 to rotate through the meshing of the first tooth-shaped part 1.1 and the second tooth-shaped part 3.1; in a second state, the sleeve 3 is crystal-limited and the pump shaft 1 is idle with respect to the sleeve 3.
Specifically, as described above, the absorber, the generator, the condenser, the expansion valve and the evaporator in the prior art are not repeated, in this embodiment, the delivery pump is a canned pump, the impeller 2 of the delivery pump includes a disk body, the disk body includes a central cylinder 2.1, two disks 2.2 arranged on the central cylinder 2.1 and arranged in parallel relatively, and a plurality of blades 2.3 arranged between the two disks 2.2, one side of the disk body, that is, a central area of one disk 2.2, is connected to the pump shaft 1, and the other side of the disk body, that is, a central area of the other disk 2.2, is provided with a water inlet hole. In this embodiment, the original integrated impeller 2 and pump shaft 1 are split, a sleeve 3 is disposed in the central region of the impeller 2, that is, the disk 2.2 of the impeller 2 facing away from the water inlet is connected to the sleeve 3, and at the same time, the sleeve 3 and the pump shaft 1 are kneaded by the tooth-shaped portion, and an elastic member 4 is further disposed to maintain the sleeve 3 and the pump shaft 1 at the meshing position, at this time, the first state is also the first state, that is, under the premise of no restriction of strong external force (lithium bromide crystal), the pump shaft 1 sequentially transmits power through the first tooth-shaped portion 1.1, the second tooth-shaped portion 3.1, the sleeve 3 and the disk 2.2, so as to realize driving of the impeller 2, and shield the normal working and liquid conveying state of the pump, and if the external force (lithium bromide crystal) is too large, the maintaining force of the elastic member 4 is overcome at this time, the first tooth-shaped portion 1.1 and the second tooth-shaped portion 3.1 are forced to separate, and the pump shaft 1 idles, which is the second state. In this way, since the first tooth profile 1.1 and the second tooth profile 3.1 have the disengaged second state, this can be achieved regardless of whether one of the sleeve 3 or the pump shaft 1 is axially moved, and two different ways are described in detail in the following two specific embodiments.
According to the intelligent absorption type heat exchange device provided by the embodiment of the invention, when the pump shaft 1 and the impeller 2 are limited by crystallization and can not rotate, the pump shaft 1 and the sleeve 3 move relatively to enter the second state through axial movement, at the moment, the pump shaft 1 idles, the impeller 2 does not move, the outer surface of the pump shaft 1 is far smaller than that of the impeller 2, the power of the conveying pump is enough to drive the pump shaft 1 limited by crystallization, and the probability of damage of the conveying pump is greatly reduced as the pump shaft 1 continuously rotates. Moreover, the first tooth-shaped part 1.1 and the second tooth-shaped part 3.1 frequently impact and vibrate in the rotating process of the pump shaft 1, so that the cracking speed of crystals on the impeller 2 is greatly increased, and the starting speed of the shield pump is increased.
In an embodiment of the present invention, at this time, when the first state and the second state are switched, the pump shaft 1 axially moves, and at this time, the pump shaft 1 at least includes two sections capable of moving relatively, for example, the pump shaft 1 includes a first section 1.2 and a second section 1.3 whose ends are sleeved with each other, the sleeve 3 is connected to the first section 1.2, the second section 1.3 is driven by the motor, the first section 1.2 and the second section 1.3 are sleeved with each other, and the cross-sectional area of the sleeved portion of the revolving body is non-like, for example, one end of the first section 1.2 is sleeved in the cylindrical hole of the second section 1.3 through the prism, such that the rotation of the second section 1.3 drives the rotation of the first section 1.2, but the first section 1.2 can axially move relative to the second section 1.3, such that when the first state and the second state are switched, the first section 1.2 axially moves relative to the second section 1.3.
In this embodiment, as the above orientation is limited, the first section 1.2 is in front, the second section 1.3 is behind, and for example, the first section 1.2 can move forward to enter the second state, and move backward to enter the first state, the front end of the first section 1.2 has a radial disc 1.21, the rear side of the radial disc 1.21 is provided with a first tooth-shaped portion 1.1, the sleeve 3 and the impeller 2 are in an integral structure or fixedly connected, the inner wall portion of the central hole of the impeller 2 is the sleeve 3, the front end of the sleeve 3 is provided with a second tooth-shaped portion 3.1, the first tooth-shaped portion 1.1 is engaged with the second tooth-shaped portion 3.1, and at this time, an elastic member 4 in a stretching state is further provided, for example, the elastic member 4 is sleeved on the first spring on the pump shaft 1, one end of the first spring is fixedly connected to a first radial ring 5 on the first section 1.2, and the other end of the first spring is fixedly connected to a second radial ring 6 on the second section 1.3. Optionally, the first spring may be disposed inside the pump shaft 1, for example, the length of the cylindrical hole of the second section 1.3 is greater than the length of the prism of the first section 1.2, so that an elastic member 4 in a stretched state may be disposed in the cylindrical hole, when the impeller 2 is limited by the crystal and the pump shaft 1 can rotate due to small resistance, the first tooth-shaped portion 1.1 on the first section 1.2 is forced to be separated from the second tooth-shaped portion 3.1 to allow the pump shaft 1 to rotate, and at this time, the first section 1.2 moves forward to pull the elastic member 4 to further extend (the elastic member 4 is in a stretched state in the first state), due to a reset effect of the elastic member 4, the first section 1.2 continuously allows the first tooth-shaped portion 1.1 to be meshed with the second tooth-shaped portion 3.1 in the rotation process, until the first section 1.2 is connected with the sleeve 3 after the crystal of the impeller 2 is melted, and at this time, the shield pump enters the first state, and the shield pump normally operates.
Obviously, those skilled in the art understand that the above operation can also be accomplished by means of the compressed elastic member 4, where the front side surface of the first section 1.2 is provided with the first toothed portion 1.1, the front end of the sleeve 3 is closed, the inner wall of the front end is provided with the second toothed portion 3.1, and the first section 1.2 is sleeved on the sleeve 3, and the elastic member 4 is always in a compressed state, which is only the conversion of the pressure direction, and is common knowledge in the art and will not be described again.
On the basis of the radial disk 1.21, in a further embodiment, the end portion of the first section 1.2 far away from the second section 1.3, that is, the radial disk 1.21, is rotatably provided with a plurality of cutting edges 7, the cutting edges 7 are located in the liquid inlet channel of the impeller 2, and the cutting edges 7 are in a structure with a smaller radial dimension, such as a straight rod, or a strip-shaped member with a thinner side to form a cutting edge, and the function is that the outer surface of the straight rod or the strip-shaped member is smaller and occupies a smaller dimension in the axial direction of the pump shaft 1, so that the cutting edges 7 are driven by the rotation of the pump shaft 1 to cut the crystals, thereby accelerating and eliminating the limitation of the crystals on the impeller 2.
In two further embodiments, the cutting edge 7 has both an active connection and a fixed connection with the radial disk 1.21, in the embodiment of fixed connection, the cutting edge 7 is flat, like a propeller with reduced width, and the flat plane is perpendicular or substantially perpendicular to an axial section of the pump shaft 1, so that during the rotation of the pump shaft 1, the cutting edge 7 still strikes the crystal with its thin edge plane (thickness) instead of the flat plane consisting of width and length, at the same time, the cutting edge 7 is arranged obliquely to the axis of the pump shaft 1, and the extension direction of the cutting edge 7 from the fixed end to the open end of the radial disk 1.21 is forward to backward, which has the additional effect that, after the water flow has flown, it impacts the flat plane of the cutting edge 7 to enter the space between the two disks 2.2, that is a forward to backward force applied to the cutting edge 7 by the water flow, that is a force to apply the radial disk 1.21 to the sleeve 3, which was originally maintained in the first state of the pump shaft 1 and the sleeve 3 completely by the elastic member 4, and a great pressure force is added, which reduces the service life of the spring and prolongs its service life.
In another embodiment, in which the cutting edge 7 has an active connection with the radial disc 1.21, the end of the cutting edge 7 is actively connected to the first section 1.2 so that the cutting edge 7 moves away from the sleeve 3 from the position attached to the sleeve 3 with the acceleration of the rotation of the first section 1.2, the rotational connection may be made by a flexible material such as rubber, or by a rotating shaft, and since the rotation of the pump shaft 1 has a centrifugal force on the cutting edge 7, the cutting edge 7 gradually rotates from the position attached to the radial disc 1.21 to a position finally perpendicular to the radial disc 1.21 with the acceleration of the rotational speed, which has the effect that the cutting edge 7 can cut off crystals layer by layer, and a range of cutting is achieved instead of the original cutting only one layer. Similarly, in the first state, the impact of the water flow on the cutting edge 7 and the centrifugal force brought by the pump shaft 1 can be balanced to ensure that the cutting edge 7 is inclined to the pump shaft 1, because the maximum position of the centrifugal force is that the cutting edge 7 is perpendicular to the pump shaft 1, and the maximum force of the water flow drives the cutting edge 7 to be parallel to the pump shaft 1, the two forces can be balanced in the middle position, so that the cutting edge 7 gives an axial backward pressure to the first section 1.2, the pressure of the first spring is reduced, and the service life of the first spring is prolonged.
In this embodiment, it is preferable that the edge face of the cutting edge 7 is arranged obliquely with respect to the radial face of the first section 1.2 so that it cuts linearly with the crystal during the rotation of the cutting edge 7, thus improving cutting ability and efficiency.
In another embodiment provided by the present invention, the outer wall of the first section 1.2 is further provided with a third radial ring and a fourth radial ring 8, wherein the third radial ring is fixedly connected to the first section 1.2, even the third radial ring may be in the same structure as the first radial disc 1.21, the fourth radial ring 8 is movably sleeved on the first section 1.2, and a second spring 9 is connected between rear ends of the third radial ring and the fourth radial ring 8, in the first state, there is a gap between the fourth radial ring 8 and the sleeve 3, but the size of the gap is smaller than the depth of the tooth shape of the first tooth-shaped portion 1.1, so that in the second state, the fourth radial ring 8 impacts the sleeve 3, and as the impeller 2 is crystallized and limited, the pump shaft 1 continuously reciprocates, so as to drive the fourth radial ring 8 to repeatedly impact the sleeve 3, and accelerate the physical release speed of crystallization of the sleeve 3, and in the first state, the fourth radial ring 8 does not negatively affect the sleeve 3.
It should be noted that the dissolution and the position limitation release of the lithium bromide crystal are two things, the molten crystal in the prior art is completely dissolved, and the formation of the crystal is only related to the concentration and the temperature of the solution, so the prior art is two steps of temperature rise and water addition, but the embodiments of the present invention mainly remove the position limitation release, that is, the impeller 2 is limited and can not rotate due to too much lithium bromide crystal, and the embodiments of the present invention aim to enable the impeller 2 to rotate to rapidly convey the solution, and only the crystal needs to be stripped from the impeller 2, and the dissolution is not necessarily needed, but of course, the solution flows due to the rotation of the impeller 2, and the new solution has the effect of objectively and naturally accelerating the dissolution due to the lower regulation concentration.
In another embodiment provided by the present invention, when the first state and the second state are switched, the sleeve 3 axially moves, and at this time, the sleeve 3 and the impeller 2 are not in an integral structure, that is, a split structure, and because the impeller 2 cannot axially move or cannot axially move basically, and at this time, the pump shaft 1 does not axially move, the sleeve 3 itself must axially move, specifically, the impeller 2 includes a disk body, and the disk body includes a central cylinder 2.1, two disks 2.2 arranged on the central cylinder 2.1 and arranged in parallel relatively, and a plurality of blades 2.3 arranged between the two disks 2.2; in the embodiment of the axial movement of the pump shaft 1, the sleeve 3 and the central cylinder 2.1 are of an integral structure, in this embodiment, the sleeve 3 and the central cylinder 2.1 are of a split type, and the elastic element 4 is connected between the sleeve 3 and the central cylinder 2.1. At this time, preferably, a first tooth-shaped portion 1.1 is arranged at the end of the pump shaft 1, one end of the sleeve 3 is a closed end, the second tooth-shaped portion 3.1 is arranged on the inner wall of the closed end, a protruding column 3.2 is arranged at the open end of the sleeve 3, and the protruding column 3.2 is inserted into a transmission hole in the central cylinder 2.1; in the first state, the driving of the central cartridge 2.1 by the sleeve 3 is effected by the projecting stud 3.2; in the second state, the protruding column 3.2 is separated from the transmission hole, optionally, the elastic member 4 may be an elastic strip, the elastic strip is directly connected between the bottom wall of the transmission hole and the protruding column 3.2, or similar to the pump shaft 1, a protruding portion is directly disposed on the outer wall of the sleeve 3 and the outer wall of the central cylinder 2.1 and is connected to the elastic member 4, which is completely similar, in the first state, the pump shaft 1, the sleeve 3 and the central cylinder 2.1, i.e., the impeller 2, sequentially transmit to achieve transmission, and in the second state, since the impeller 2 and the central cylinder 2.1 are limited, the first tooth-shaped portion 1.1 and the second tooth-shaped portion 3.1 are forced to be separated so that the sleeve 3 is separated from the pump shaft 1 and the central cylinder 2.1, and the protruding column 3.2 is separated from the transmission hole, so that transmission is disconnected.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (10)
1. An intelligent absorption heat exchanger comprises an absorber, a delivery pump, a generator, a condenser, an expansion valve and an evaporator which are connected through pipelines, wherein the delivery pump comprises a pump shaft and an impeller connected with the pump shaft,
the impeller is arranged on a sleeve, a first tooth-shaped part is arranged on the pump shaft, and a second tooth-shaped part is arranged on the sleeve; further comprising an elastic member that makes the delivery pump have:
in a first state, the pump shaft drives the sleeve to rotate through the meshing of the first tooth-shaped part and the second tooth-shaped part;
in a second state, the sleeve is crystal-constrained and the pump shaft is idle relative to the sleeve.
2. The intelligent absorption heat exchanger apparatus of claim 1 wherein the pump shaft moves axially when switched between the first state and the second state.
3. The intelligent absorption heat exchanger of claim 2 wherein the pump shaft includes a first section and a second section that are nested together at their ends, the sleeve being attached to the first section,
when the first state and the second state are switched, the first section moves axially relative to the second section.
4. The intelligent absorption heat exchange unit of claim 3 wherein the elastic member is sleeved on a first spring on the pump shaft, one end of the first spring is fixedly connected to a first radial ring on the first section, and the other end of the first spring is fixedly connected to a second radial ring on the second section.
5. The intelligent absorption heat exchanger according to claim 3, wherein a plurality of cutting edges are rotatably arranged on the end of the first section far away from the second section, and the cutting edges are positioned in the liquid inlet channel of the impeller.
6. The intelligent absorption heat exchanger according to claim 5, wherein the end of the cutting edge is movably connected to the first segment such that the cutting edge moves away from the sleeve in response to acceleration of the rotation of the first segment.
7. The smart absorption heat exchanger as claimed in claim 6, wherein the cutting edge facet is arranged obliquely with respect to the radial plane of the first section such that it cuts linearly with the crystal during rotation of the cutting edge.
8. The intelligent absorption heat exchange device of claim 1 wherein the sleeve moves axially when switched between the first and second states.
9. The intelligent absorption heat exchange unit of claim 8 wherein the impeller comprises a disk body comprising a central cylinder, two disks disposed on the central cylinder in opposing parallel arrangement, and a plurality of blades disposed between the two disks;
the sleeve is connected to the central cylinder in a sliding mode, and meanwhile the elastic piece is connected between the sleeve and the central cylinder.
10. The intelligent absorption heat exchanger according to claim 9, wherein a first toothed portion is provided at an end of the pump shaft, one end of the sleeve is a closed end, the second toothed portion is provided on an inner wall of the closed end, and a protruding column is provided at an open end of the sleeve and is inserted into the transmission hole of the central cylinder;
in the first state, the sleeve drives the central cylinder through the protruding columns;
in the second state, the protruding post is disengaged from the drive aperture.
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| CN202211561465.5A CN115977966B (en) | 2022-12-07 | 2022-12-07 | Intelligent absorption type heat exchange device |
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| CN202211561465.5A CN115977966B (en) | 2022-12-07 | 2022-12-07 | Intelligent absorption type heat exchange device |
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| CN115977966A true CN115977966A (en) | 2023-04-18 |
| CN115977966B CN115977966B (en) | 2024-02-23 |
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| SU1097825A1 (en) * | 1982-11-10 | 1984-06-15 | Aleksandrov Stanislav L | Centrifugal pump |
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| CN112855555A (en) * | 2021-02-11 | 2021-05-28 | 张继峰 | Sewage pump |
| CN114508489A (en) * | 2022-02-25 | 2022-05-17 | 江苏惠尔泵业有限公司 | Magnetic pump with particles easy to crystallize and used for high-temperature corrosion |
| KR102435462B1 (en) * | 2022-04-27 | 2022-08-23 | 주식회사 신한알앤디 | Submersible pump with auxiliary vanes to prevent foreign substances from penetrating |
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|---|---|---|---|---|
| SU1097825A1 (en) * | 1982-11-10 | 1984-06-15 | Aleksandrov Stanislav L | Centrifugal pump |
| US20110200469A1 (en) * | 2010-02-12 | 2011-08-18 | Junya Kawabata | Submersible motor pump, motor pump, and tandem mechanical seal |
| CN105963114A (en) * | 2016-05-09 | 2016-09-28 | 吉首大学 | Impulse fitness massage constant temperature water bed |
| CN110397603A (en) * | 2019-08-03 | 2019-11-01 | 东莞海特帕沃液压科技有限公司 | A kind of water pump |
| CN212928208U (en) * | 2020-08-03 | 2021-04-09 | 合肥小牛轻工机械有限公司 | Centrifugal pump for conveying high-viscosity materials in vacuum negative pressure state |
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|---|---|
| CN115977966B (en) | 2024-02-23 |
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