CN115977966B - Intelligent absorption type heat exchange device - Google Patents
Intelligent absorption type heat exchange device Download PDFInfo
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- CN115977966B CN115977966B CN202211561465.5A CN202211561465A CN115977966B CN 115977966 B CN115977966 B CN 115977966B CN 202211561465 A CN202211561465 A CN 202211561465A CN 115977966 B CN115977966 B CN 115977966B
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 37
- 238000002425 crystallisation Methods 0.000 claims abstract description 22
- 230000008025 crystallization Effects 0.000 claims abstract description 22
- 239000013078 crystal Substances 0.000 claims abstract description 13
- 239000006096 absorbing agent Substances 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 47
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 38
- 239000000243 solution Substances 0.000 description 11
- 238000005057 refrigeration Methods 0.000 description 8
- 239000000498 cooling water Substances 0.000 description 7
- 239000008236 heating water Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000008400 supply water Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 239000002250 absorbent Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction 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
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000008234 soft water Substances 0.000 description 1
Classifications
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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
-
- 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
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses an intelligent absorption heat exchange device, which 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; still include the elastic component, the elastic component makes the delivery pump have: the pump shaft drives the sleeve to rotate through the engagement of the first tooth-shaped part and the second tooth-shaped part in the first state; in the second state, the sleeve is restricted by crystallization and the pump shaft idles relative to the sleeve. According to the intelligent absorption heat exchange device provided by the invention, when the pump shaft and the impeller are limited by crystallization and can not rotate, the power of the conveying pump is enough to drive the pump shaft limited by crystallization, and the pump shaft continues to rotate, so that the damage probability of the conveying pump is greatly reduced. In addition, in the process of pump shaft rotation, the first tooth-shaped part and the second tooth-shaped part frequently collide and vibrate, so that the breaking speed of crystals on the impeller is greatly increased.
Description
Technical Field
The invention relates to refrigeration technology, in particular to an intelligent absorption heat exchange device.
Background
As is known, the conventional air conditioner has a large energy consumption by using a compressor as a core power, and in recent years, an absorption type heat exchange refrigerating system without a compressor is increasingly widely utilized in the fields of solar energy, thermal power plants, and the like due to silence, environmental protection, energy saving, and the ability to use low-grade heat energy. The absorption heat exchange system generally comprises four parts, namely an absorber, a generator, a condenser and an evaporator, most commonly, lithium bromide solution is used as an absorbent, water is used as a refrigerant, and the purpose of refrigeration is achieved by utilizing evaporation and heat absorption of water under high vacuum.
For example, the patent of the invention of the energy-saving system of the lithium bromide absorption refrigerator, the patent comprises at least one heat supply water source heat pump, a first heating water source heat pump, a second heating water source heat pump, a heat collecting water tank, a cooling water tank and a lithium bromide absorption refrigerator set, wherein the heat supply water source heat pump, the first heating water source heat pump and the second heating water source heat pump are arranged in parallel, the heat supply water source heat pump and the first heating water source heat pump are used for extracting external heat sources to exchange heat from a user side water source and then conveying the user side hot water to the heat collecting water tank for storage, the second heating water source heat pump is used for extracting a condensing outlet of the lithium bromide absorption refrigerator set to convey the heat source to the user side water source for heat exchange and then conveying the user side hot water to the heat collecting water tank for storage, the cooling water after heat exchange at the water source side is conveyed to a cooling water tank for storage, the water supplementing ports of the heat collecting water tank and the cooling water tank are connected with an external soft water system through pipelines and water supplementing valves arranged on the pipelines, the water from the circulating water outlet of the heat collecting water tank is conveyed to the user side of a heat supply water source 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, the 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, the hot water conveyed by the water outlet of the heat collecting water tank is conveyed to the user side of a first heat water source heat pump and a second heat water source heat pump through cold water after heat exchange at the hot water side of the lithium bromide absorption refrigerating unit, the water outlet of the cooling water tank is connected with a cold water port of the lithium bromide absorption refrigerating unit through a pipeline and a pipeline accessory which is arranged on the pipeline and comprises a cooling water circulating pump, and the refrigerating side of the lithium bromide absorption refrigerating unit is connected with a cooling tail end through the pipeline and the pipeline accessory which is arranged on the pipeline and comprises an air conditioner cooling circulating pump so as to perform heat exchange and refrigeration on air conditioner tail end water supply.
The above patent provides a lithium bromide absorption heat exchange refrigeration device utilizing low-grade heat energy, which has the defects that when the pressure of heating energy is too high, the cooling water temperature is too low, or a plurality of reasons such as non-condensable gas exist in a unit, lithium bromide crystallization can occur in a pipeline, although the crystallization can be melted by virtue of heat exchange of a fused transistor, steam or steam condensate and the like, when an impeller of a delivery pump is fixed by crystallization, the delivery pump needs to be repeatedly started to confirm whether the crystallization is in place or not in the process of melting the crystallization, and because the delivery pump in a refrigeration system is generally used as a shielding pump, the shielding pump cannot visually observe whether a pump shaft rotates or not and can only be confirmed by observing a front pressure gauge and a rear pressure gauge of the shielding pump, the problem is that a starting button of the delivery pump is pressed down, but the pump shaft is blocked by the crystallization and cannot rotate, so that the probability of damaging the shielding pump is greatly improved, and the relatively frequent maintenance is caused in other fields.
Disclosure of Invention
The invention aims to provide an intelligent absorption heat exchange device so as to solve the defects in the prior art.
In order to achieve the above object, the present invention provides the following technical solutions:
an intelligent absorption heat exchange device 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; further comprising an elastic member that causes the delivery pump to have:
the pump shaft drives the sleeve to rotate through the engagement of the first tooth-shaped part and the second tooth-shaped part in a first state;
in a second state, the sleeve is restricted from crystallizing and the pump shaft is idle relative to the sleeve.
According to the intelligent absorption heat exchange device, when the first state and the second state are switched, the pump shaft moves axially.
In the intelligent absorption heat exchange device, the pump shaft comprises a first section and a second section with mutually sleeved ends, 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.
According to the intelligent absorption heat exchange device, the elastic piece 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.
According to the intelligent absorption heat exchange device, the end part, far away from the second section, of the first section is rotatably provided with the plurality of cutting edges, and the cutting edges are located in the liquid inlet channel of the impeller.
According to the intelligent absorption heat exchange device, the end part of the cutting edge is movably connected to the first section so that the cutting edge moves from the joint of the sleeve to the direction far away from the sleeve along with the acceleration of the rotation of the first section.
In the intelligent absorption heat exchange device, the cutting edge surface of the cutting edge is obliquely arranged relative to the radial surface of the first section so that the cutting edge linearly cuts with crystals in the rotation process of the cutting edge.
According to the intelligent absorption heat exchange device, when the first state and the second state are switched, the sleeve axially moves.
The intelligent absorption heat exchange device comprises the impeller, wherein the impeller comprises a disc body, and the disc body comprises a central cylinder, two discs which are arranged on the central cylinder and are relatively arranged in parallel, and a plurality of blades which are arranged between the two discs;
the sleeve is connected to the central cylinder in a sliding manner, and meanwhile, the elastic piece is connected between the sleeve and the central cylinder.
In the intelligent absorption heat exchange device, the end part 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 opening end of the sleeve is provided with the protruding column, and the protruding column is inserted into the transmission hole on the central cylinder;
in the first state, the sleeve drives the central cylinder through the protruding column;
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 cannot rotate, the pump shaft and the sleeve relatively move to enter the second state through axial movement, the pump shaft idles, the impeller is not moved, the power of the conveying pump is enough to drive the pump shaft limited by crystallization because the outer surface of the pump shaft is far smaller than the outer surface of the impeller, and the probability of damage of the conveying pump is greatly reduced because the pump shaft continues to rotate.
In addition, in the process of pump shaft rotation, the first tooth-shaped part and the second tooth-shaped part frequently collide and vibrate, so that the breaking speed of crystals on the impeller is greatly increased, and the starting speed of the shielding pump is increased.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed 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 may be obtained according to these drawings for a person having ordinary skill in the art.
FIG. 1 is a schematic view of a pump shaft and impeller according to one embodiment of the present invention;
FIG. 2 is a schematic view of a pump shaft and impeller according to another embodiment of the present invention;
FIG. 3 is a schematic view of a pump shaft and impeller according to yet another embodiment of the present invention;
FIG. 4 is a schematic view of a pump shaft and impeller according to yet another embodiment of the present invention.
Reference numerals illustrate:
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, projecting the post; 4. an elastic member; 5. a first radial ring; 6. a second radial ring; 7. a cutting edge; 8. a fourth radial ring; 9. and a second spring.
Detailed Description
In order to make the technical scheme of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
In the embodiments of the invention, the intelligent absorption heat exchange device refers to an absorption refrigeration system which takes water as a refrigerant and lithium bromide aqueous solution as an absorbent, and the structure of the intelligent absorption heat exchange device comprises an evaporator, a condenser, a generator, a delivery pump, an expansion valve, the evaporator and the like, wherein the delivery pump is a shielding pump and is used for delivering the solution in the absorber into the generator. The evaporator is a high vacuum container, the evaporation of water can make the coolant water in the pipe emit heat and cool, so as to obtain cold, the produced water vapor flows into the absorber, the lithium bromide concentrated solution pumped by the absorber has the capability of absorbing water, the water vapor is contacted with the concentrated solution to be absorbed, so that a dilute solution is formed, the above is the prior art of an absorption refrigeration system, the description is omitted, and the embodiments of the invention aim at the problem of starting a shielding pump caused by lithium bromide crystallization in the lithium bromide absorption refrigeration system.
As shown in fig. 1-4, the intelligent absorption heat exchange device provided by the embodiment of the invention 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 1 and an impeller 2 connected with the pump shaft 1, the impeller 2 is arranged on a sleeve 3, a first tooth-shaped part 1.1 is arranged on the pump shaft 1, and a second tooth-shaped part 3.1 is arranged on the sleeve 3; also included is an elastic member 4, said elastic member 4 providing said delivery pump with: in a first state, the pump shaft 1 drives the sleeve 3 to rotate through the engagement of the first tooth-shaped part 1.1 and the second tooth-shaped part 3.1; in the second state, the sleeve 3 is restricted by crystallization, and the pump shaft 1 idles relative 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 described in detail, in this embodiment, the delivery pump is a canned motor pump, the impeller 2 includes a disc body, the disc body includes a central cylinder 2.1, two discs 2.2 disposed on the central cylinder 2.1 and arranged in parallel relatively, and a plurality of blades 2.3 disposed between the two discs 2.2, one side of the disc body, that is, a central area of one disc 2.2, is connected with the pump shaft 1, a water inlet is disposed on the other side of the disc body, that is, a central area of the other disc 2.2. In this embodiment, the original integrated impeller 2 and pump shaft 1 are set to be separated, a sleeve 3 is set in the central area of the impeller 2, that is, the disc 2.2 of the impeller 2 deviating from the water inlet is connected to the sleeve 3, meanwhile, the sleeve 3 and the pump shaft 1 are kneaded through the tooth-shaped parts, an elastic piece 4 is further set to maintain the sleeve 3 and the pump shaft 1 at the engaged position, which is also the first state, that is, under the precondition that no strong external force (lithium bromide crystallization) is limited, the pump shaft 1 sequentially transmits power through the first tooth-shaped part 1.1, the second tooth-shaped part 3.1, the sleeve 3 and the disc 2.2, so that the impeller 2 is driven, and the state of shielding the normal working and delivering liquid of the pump is realized, and if the external force (lithium bromide crystallization) is too large, the maintaining force of the elastic piece 4 is overcome, the first tooth-shaped part 1.1 and the second tooth-shaped part 3.1 are forced to be separated, and the pump shaft 1 is in the second state. In this way, since the first tooth profile 1.1 and the second tooth profile 3.1 have a disengaged second state, this can be achieved by axial displacement of either the sleeve 3 or the pump shaft 1, in two different ways, see in detail the two embodiments below.
According to the intelligent absorption heat exchange device provided by the embodiment of the invention, when the pump shaft 1 and the impeller 2 are limited by crystallization and cannot rotate, the pump shaft 1 and the sleeve 3 relatively move to enter the second state through axial movement, at the moment, the pump shaft 1 idles, the impeller 2 is not moved, and as the outer surface of the pump shaft 1 is far smaller than the outer surface 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 because the pump shaft 1 continues to rotate. In addition, in the process of the rotation of the pump shaft 1, the first tooth-shaped part 1.1 and the second tooth-shaped part 3.1 frequently collide and vibrate, so that the breaking speed of crystals on the impeller 2 is greatly increased, and the starting speed of the shielding pump is improved.
In one embodiment of the present invention, at this time, when the first state and the second state are switched, the pump shaft 1 moves axially, 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 with end parts sleeved with each other, the sleeve 3 is connected to the first section 1.2, the second section 1.3 is driven by a motor, the first section 1.2 and the second section 1.3 are sleeved with each other, the cross-sectional area of the sleeved part is non-revolving body, for example, one end of the first section 1.2 is sleeved in a cylindrical hole on the second section 1.3 through a prism, so 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 move axially relative to the second section 1.3, so that when the first state and the second state are switched, the first section 1.2 moves axially relative to the second section 1.3.
In this embodiment, as defined in the above orientation, the first section 1.2 is in front, the second section 1.3 is in back, and taking the first section 1.2 being able to move forward into the second state and move backward into the first state as an example, at this time, the front end of the first section 1.2 has a radial disk 1.21, the rear side of the radial disk 1.21 is provided with a first tooth-shaped portion 1.1, at this time, the sleeve 3 and the impeller 2 are in an integral structure or fixed connection, 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 meshed with the second tooth-shaped portion 3.1, at this time, an elastic member 4 in a stretched state is further provided, for example, the elastic member 4 is sleeved on a first spring on the pump shaft 1, one end of the first spring is fixed to a first radial ring 5 on the first section 1.2, and the other end of the first spring is fixed 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 that of the prism of the first section 1.2, so that the cylindrical hole may be provided with an elastic member 4 in a stretched state, when the impeller 2 is limited by crystallization and the pump shaft 1 can rotate due to small resistance, the first toothed portion 1.1 on the first section 1.2 is forced to separate from the second toothed portion 3.1 so that the pump shaft 1 rotates, at this time, the first section 1.2 moves forward to pull the elastic member 4 to further stretch (the elastic member 4 is in a stretched state in the first state), and due to the restoring effect of the elastic member 4, the first section 1.2 continuously makes the first toothed portion 1.1 mesh and separate from the second toothed portion 3.1 in the rotating process until after the crystallization of the impeller 2 melts, the first section 1.2 is connected with the sleeve 3, and enters the first state at this time, so that the shield pump works normally.
Obviously, the person skilled in the art understands that the above-mentioned work can also be done by means of the compressed elastic member 4, wherein the front side surface of the first section 1.2 is provided with the first tooth-shaped portion 1.1, the front end of the sleeve 3 is closed, the inner wall of the front end is provided with the second tooth-shaped portion 3.1, 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 not described in detail.
In a further embodiment, on the basis of the aforementioned radial disk 1.21, a plurality of cutting edges 7 are rotatably disposed on the end portion, away from the second section 1.3, of the first section 1.2, that is, on the radial disk 1.21, 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 smaller radial dimensions, such as a straight rod, or one side of the strip-shaped member is thinner to form a cutting edge, which has the effect that the outer surface of the straight rod or the strip-shaped member is smaller and the dimension occupied in the axial direction of the pump shaft 1 is smaller, so that the rotation of the pump shaft 1 drives the cutting edges 7 to cut off crystals, thereby accelerating the elimination of the restriction of the crystals on the impeller 2.
In both further embodiments, the cutting edge 7 has both a movable connection and a fixed connection with the radial disk 1.21, in which embodiment the cutting edge 7 is flat, like a propeller of reduced width, and the flat face is perpendicular or substantially perpendicular to an axial section of the pump shaft 1, so that during rotation of the pump shaft 1 the cutting edge 7 still impacts the crystallization with its thinner blade face (thickness) instead of a flat face consisting of width and length, while the cutting edge 7 is arranged obliquely to the axis of the pump shaft 1, and the direction of extension of the fixed end of the cutting edge 7 connecting the radial disk 1.21 to the open end is front to rear, which has the further effect that, after the water flow, the water flow impacts the flat face of the cutting edge 7 into the space between the two disks 2.2, when the water flow applies a force to the cutting edge 7 from front to rear, i.e. a force to attach the radial disk 1.21 to the sleeve 3, in the first state of 1 and the sleeve 3, depending on the elastic element 4, a great auxiliary force is fully applied, which reduces the service life of the spring.
In another embodiment, in which the cutting edge 7 has a movable connection with the radial disk 1.21, the end of the cutting edge 7 is movably connected to the first section 1.2 so that, as the first section 1.2 is rotated to accelerate, the cutting edge 7 moves away from the sleeve 3 from abutting the sleeve 3, the rotational connection may be made of a flexible material, such as rubber, or by a rotating shaft, since the rotation of the pump shaft 1 has centrifugal force on the cutting edge 7, the cutting edge 7 is gradually rotated from the position abutting the radial disk 1.21 to the position finally perpendicular to the radial disk 1.21 as the rotational speed increases, which has the effect that the cutting edge 7 can be crystallized to a layer-by-layer cut, rather than the original one. Also, in the first state, the impact of the water flow on the cutting edge 7 and the centrifugal force caused by the pump shaft 1 will be balanced, so that the cutting edge 7 is necessarily 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 is that the cutting edge 7 is driven to be parallel to the pump shaft 1, the two forces are necessarily 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 preferred that the edge face of the cutting edge 7 is arranged obliquely with respect to the radial face of the first segment 1.2 so that it cuts linearly with the crystal during rotation of the cutting edge 7, thus improving cutting capacity and efficiency.
In another embodiment provided by the invention, a third radial ring and a fourth radial ring 8 are further arranged on the outer wall of the first section 1.2, wherein the third radial ring is fixedly connected to the first section 1.2, even the third radial ring and the first radial disk 1.21 can be of the same structure, the fourth radial ring 8 is movably sleeved on the first section 1.2, a second spring 9 is connected between the rear ends of the third radial ring and the fourth radial ring 8, a gap is arranged between the fourth radial ring 8 and the sleeve 3 in the first state, but the size of the gap is smaller than the depth of the tooth shape of the first tooth shape part 1.1, so that in the second state, the fourth radial ring 8 can impact the sleeve 3, and as the impeller 2 is crystallized and limited, the pump shaft 1 can continuously reciprocate, so that the fourth radial ring 8 is repeatedly driven to impact the sleeve 3, the physical release speed of crystallization of the sleeve 3 is accelerated, and in the first state, the fourth radial ring 8 does not negatively influence the sleeve 3.
It should be noted that, dissolution and limit release of lithium bromide crystals are two matters, the melted crystals in the prior art are all dissolved, and the formation of the crystals is only related to the concentration and temperature of the solution, so the prior art is two steps of heating and adding water, but the embodiments of the invention mainly run on limit release and remove, that is, the impeller 2 is limited and can not rotate due to excessive lithium bromide crystals, the embodiments of the invention aim to enable the impeller 2 to rotate so as to rapidly convey the solution, and the crystals only need to be stripped from the impeller 2, and do not necessarily need to be dissolved, however, of course, the impeller 2 rotates so that the solution flows, and the newly obtained solution has the effect of accelerating the dissolution objectively and naturally due to lower regulation concentration.
In still another embodiment of the present invention, when the first state and the second state are switched, the sleeve 3 moves axially, and at this time, the sleeve 3 and the impeller 2 are not in an integral structure, that is, are in a split structure, and because the impeller 2 cannot move axially or cannot move substantially axially, and at this time, the pump shaft 1 does not move axially, the sleeve 3 itself must move axially, and specifically, the impeller 2 includes a disc body, where the disc body includes a central cylinder 2.1, two discs 2.2 disposed on the central cylinder 2.1 and disposed in parallel with each other, and a plurality of blades 2.3 disposed between the two discs 2.2; in the foregoing embodiment in which the pump shaft 1 moves axially, the sleeve 3 and the central cylinder 2.1 are essentially of an integral structure, in this embodiment, the sleeve 3 is split and slidably connected to the central cylinder 2.1, and the elastic member 4 is connected between the sleeve 3 and the central cylinder 2.1. At this time, preferably, a first tooth-shaped part 1.1 is arranged at the end part of the pump shaft 1, one end of the sleeve 3 is a closed end, the second tooth-shaped part 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 on the central cylinder 2.1; in the first state, the sleeve 3 drives the central cylinder 2.1 through the protruding column 3.2; in the second state, the protruding post 3.2 is separated from the transmission hole, alternatively, the elastic piece 4 may be an elastic strip, the elastic strip is directly connected between the bottom wall of the transmission hole and the protruding post 3.2, or similar to the pump shaft 1, a protruding part is directly arranged on the outer wall of the sleeve 3 and the central cylinder 2.1 and connected with the elastic piece 4, at the moment, the pump shaft 1, the sleeve 3 and the central cylinder 2.1, that is, the impeller 2 are sequentially driven to realize transmission, and in the second state, the impeller 2 and the central cylinder 2.1 are limited, so that the first toothed part 1.1 and the second toothed part 3.1 are forced to be separated, the sleeve 3 is separated from the pump shaft 1 and the central cylinder 2.1, the protruding post 3.2 is separated from the transmission hole, and the 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 modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.
Claims (4)
1. An intelligent absorption heat exchange device 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, and is characterized in that,
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 causes the delivery pump to have:
the pump shaft drives the sleeve to rotate through the engagement of the first tooth-shaped part and the second tooth-shaped part in a first state;
a second state in which the sleeve is restricted from crystallization and the pump shaft is idle relative to the sleeve;
when the first state and the second state are switched, the pump shaft moves axially;
the pump shaft comprises a first section and a second section with mutually sleeved ends, 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;
the elastic piece 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;
or when the first state and the second state are switched, the sleeve axially moves;
the impeller comprises a disc body, wherein the disc body comprises a central cylinder, two discs which are arranged on the central cylinder and are relatively arranged in parallel, and a plurality of blades which are arranged between the two discs;
the sleeve is connected to the central cylinder in a sliding manner, and the elastic piece is connected between the sleeve and the central cylinder;
the end part of the pump shaft is provided with a first tooth-shaped part, one end of the sleeve is a closed end, the inner wall of the closed end is provided with a second tooth-shaped part, the opening end of the sleeve is provided with a protruding column, and the protruding column is inserted into a transmission hole on the central cylinder;
the first state is that the sleeve drives the central cylinder through the protruding column;
and in the second state, the protruding column is separated from the transmission hole.
2. The intelligent absorption heat exchange device according to claim 1, wherein a plurality of cutting edges are rotatably arranged on the end of the first section far from the second section, and the cutting edges are located in the liquid inlet channel of the impeller.
3. The intelligent heat exchange device of claim 2 wherein the end of the cutting blade is movably connected to the first segment such that as the first segment rotates is accelerated, the cutting blade moves away from the sleeve from engaging the sleeve.
4. A smart absorption heat exchange device according to claim 3 wherein the edge face of the cutting edge is arranged obliquely to the radial face of the first section such that it cuts linearly with the crystal during rotation of the cutting edge.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211561465.5A CN115977966B (en) | 2022-12-07 | 2022-12-07 | Intelligent absorption type heat exchange device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211561465.5A CN115977966B (en) | 2022-12-07 | 2022-12-07 | Intelligent absorption type heat exchange device |
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| CN115977966A CN115977966A (en) | 2023-04-18 |
| CN115977966B true CN115977966B (en) | 2024-02-23 |
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| CN202211561465.5A Active CN115977966B (en) | 2022-12-07 | 2022-12-07 | Intelligent absorption type heat exchange device |
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| SU1097825A1 (en) * | 1982-11-10 | 1984-06-15 | Aleksandrov Stanislav L | Centrifugal pump |
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| 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 |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8491277B2 (en) * | 2010-02-12 | 2013-07-23 | Ebara Corporation | Submersible motor pump, motor pump, and tandem mechanical seal |
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2022
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1097825A1 (en) * | 1982-11-10 | 1984-06-15 | Aleksandrov Stanislav L | Centrifugal pump |
| 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 |
| 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 |
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| CN115977966A (en) | 2023-04-18 |
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