CN208075395U

CN208075395U - Plate ice machine with double plate evaporators

Info

Publication number: CN208075395U
Application number: CN201820300617.9U
Authority: CN
Inventors: 独孤勇
Original assignee: Friendly Ice Making Equipment Co Ltd In Qingdao Three
Current assignee: Friendly Ice Making Equipment Co Ltd In Qingdao Three
Priority date: 2018-03-04
Filing date: 2018-03-04
Publication date: 2018-11-09
Anticipated expiration: 2028-03-04

Abstract

The utility model provides a kind of plate ice machine with double plate evaporators.Refrigeration system is set in the fuselage cover of the utility model, ice making water-carriage system, deices water-carriage system and ice crushing mechanisms；Evaporator includes the double plates of several evaporations, the double plates of evaporation include the opposite evaporation veneer of two panels, two panels forms overheat gap between evaporating veneer, it includes several unit plate bodys to evaporate veneer, it is put down in cell board body to several circulation passages are arranged, the section of circulation passage is rectangle, evenly distributed several fins on the inner wall of circulation passage, the fixed closure plate in the both sides of unit plate body, cavity is set in closure plate, circulation passage is connected with cavity, one end of closure plate internal cavity is opening, closed plate is arranged in the other end, the cavity opening of two closure plates on same unit plate body is in oppositely arranged up and down；Several unit plate bodys are formed along file by splicing component connected, and the closure plate of the neighbouring plate body of Unit two makes the cavity opening of connection closure plate be connected in sealing to just connecting.

Description

Plate ice machine with double plate evaporators

Technical field

The utility model belongs to field of mechanical technique, is related to a kind of ice making equipment, especially a kind of to have double plate evaporators Plate ice machine.

Background technology

Plate ice machine is one kind of ice machine, generally mostly industrial ice machine.Produced ice is bulk.The plate ice that it is manufactured is not Regular, hard, transparent drying.Plate ice thickness and width can freely be adjusted according to purposes.It is given birth to used in large supermarket in commercial field Fresh, the fresh-keeping exhibition booth of frozen meat；Hotel, hotel；Aquatic products sale monopoly, wholesale market.Food processing industry：The meat processing operations such as broiler chicken are fresh-keeping It is cooling；Vegetables, milk, coffee are fresh-keeping；Bread processing, the cooling use of wine manufacture.Fish processing industry：Roast eel, prawn product, fish etc. Non-staple food process is fresh-keeping；Oyster, fresh fish, shellfish transportation fresh-retaining.Fishing boat fishery：It is large-scale from coastal waters small-scale fishing vessel to ocean The seafood freshing of fishing vessel fishing uses.Dye chemical industry industry：It is mainly used for process cooling.Pharmaceutical industry：Pharmaceutical production Process cooling refrigeration uses.

Evaporator is a critically important component in freezing four big parts, and the condensed fluid of low temperature is by evaporator, with the external world Air carry out heat exchange, gasification heat absorption, achieve the effect that refrigeration.Evaporator is mainly by heating room and vaporization chamber two parts group At.It heats room and is provided to liquid and evaporate required heat, liquid boiling is promoted to vaporize；Vaporization chamber makes gas-liquid two-phase divide completely From.

Evaporator in existing plate ice machine has the following problems：

Heat exchange efficiency of the refrigerant in evaporator is relatively low, and a large amount of loss of refrigeration capacity entrained by refrigerant is made to waste.Refrigeration Agent residence time in evaporator is short so that the working efficiency of unit refrigerant is low, when work to increase compressor Between and live load.Evaporator refrigeration effect is general, and the plate ice thickness produced is poor, and should not store, and easily melts.

Utility model content

The purpose of this utility model is the presence of the above problem in view of the prior art, it is proposed that a kind of serpentine-like by being arranged Bending path to enhance heat transfer effect, while adding inner wall of the pipe structure, the exposure level of enhancing and refrigerant promotes heat exchange The plate ice machine with double plate evaporators of efficiency.

The purpose of this utility model can be realized by following technical proposal：Plate ice machine with double plate evaporators, including Fuselage cover, the fuselage cover interior setting refrigeration system, deice water-carriage system and ice crushing mechanisms at ice making water-carriage system, described Refrigeration system includes in loop-coupled compressor, condenser, expansion valve and evaporator, and the ice making water-carriage system includes cycle Cold water storage cistern, ice making water pump, ice making feed pipe and the ice making return flume of connection, the water-carriage system that deices includes the heat being connected by circulation Water tank deices water pump, deices feed pipe and deices return flume, and the ice crushing mechanisms includes trash ice motor, driving pulley and wolf Tooth stick；It is in the double plates of evaporation arranged in parallel that the evaporator, which includes several, and the double plates of evaporation include the opposite evaporation of two panels Veneer, the top of evaporation veneer described in two panels are fixedly connected with by installing floor, and bottom is fixedly connected with by mounting base, is steamed described in two panels Overheat gap is formed between bill plate, the opposite lateral wall that veneer is evaporated described in two panels is chill surface, evaporates veneer described in two panels Relative inner wall be heat-absorbent surface, the evaporation veneer includes several unit plate bodys, the upper and lower edge of the unit plate body Splicing component is set, is put down in the cell board body to several circulation passages are arranged, the section of the circulation passage is in rectangular Shape, evenly distributed several fins on the inner wall of the circulation passage, the fixed closure plate in both sides of the unit plate body, the closure plate Interior setting cavity, the circulation passage are connected with the cavity, and one end of the closure plate internal cavity is opening, other end setting Closed plate, the cavity opening of two closure plates on same unit plate body is in oppositely arranged up and down；Several unit plate bodys are along vertical Row form connected by splicing component, and the closure plate of the neighbouring plate body of Unit two makes the cavity opening of connection closure plate to just connecting It is connected in sealing, liquid supply pipe is connected on a side stopboard of the unit plate body of bottommost, be located at the unit plate body of topmost It is connected to liquid back pipe on one side stopboard；The ice making feed pipe is located at the top of two lateral walls of the double plates of the evaporation, the ice making Several spray apertures on feed pipe are towards the chill surface, and the both sides of the mounting base have outer groove, and the outer groove linking is in institute The lower section of chill surface, one end closing of the outer groove are stated, other end flow-guiding mouth is connected the ice making return flume；It is described to deice water supply Pipe is located at the top of the overheat gap of the double plates of evaporation, and several spray apertures deiced on feed pipe are described towards the heat-absorbent surface There is inside groove, the inside groove linking to be led in the lower section of the heat-absorbent surface, inside groove one end closing, the other end at the middle part of mounting base Return flume is deiced described in head piece linking；The mace is located at the lower section of the evaporator, is provided below the mace Ice mouth, gear sets strainer at the ice mouth, and the cold water storage cistern linking is in the lower section of the strainer.

Intelligence control system is set on this plate ice machine, by the intelligent interface of touch screen, comes arrange parameter, display number According to, monitoring device state.Standard ice making cycle is 25 minutes, also can be only by selecting operating mode freely to set ice making time Using night dip electricity ice making, ice making cost is reduced.What the temperature difference of simultaneous selection ice-make mode reduction Summer and winter was brought to system Failure.

By the blocking or conducting set by closure plate, multiple unit plate bodys of longitudinal arrangement are connected to form multistage bending Thus circulation path extends flow path length of the refrigerant in evaporator, extend delay duration of the refrigerant in evaporator, from And realize the abundant effect of refrigerant, its utilization rate is improved, heat transfer effect is enhanced.

In the above-mentioned plate ice machine with double plate evaporators, the fin is linear type or wave line style, the fin Cross sectional shape be arc-shaped or triangle.

In the above-mentioned plate ice machine with double plate evaporators, the quantity of fin is 8~20 in each circulation passage A, the width of the fin is 0.3~1.8mm, and the height of the fin is 0.4~2.1mm, between the adjacent fin between Away from for 1.2~3.6mm.

In the above-mentioned plate ice machine with double plate evaporators, the spacing in the overheat gap is 30mm~50mm.

In the above-mentioned plate ice machine with double plate evaporators, the splicing component includes being located at unit plate body bottom side Raised line, the raised line is dovetail profile bar body, and the splicing component further includes the groove positioned at unit plate body top side, described Groove is dovetail groove, and the raised line, which is inserted into the groove, forms chimeric clamping.The clamping engagement of dove-tail form can be realized effectively Being connected between two boards body, avoids two plates from being detached from clamping easily by dovetail profile.

In the above-mentioned plate ice machine with double plate evaporators, the unit plate body and the installation floor for being located at topmost are solid Even, raised line is arranged in the bottom side of the installation floor, and the raised line, which is inserted into the groove of unit plate body top side, forms chimeric clamping；Position It is connected with mounting base in the unit plate body of bottommost, dovetail groove, unit plate body bottom is arranged in the top of the mounting base The raised line of side, which is inserted into the dovetail groove, forms chimeric clamping.

Principle using 0 DEG C of icing of water cannot coexist because ice is monomineralic rock with its object, process of the water in crystallization In automatic despumation, only fresh water is freezing at this time, and impurity, air etc. are flowed out with water, thus be condensate in evaporation veneer on Ice have the characteristics that it is net transparent.

Refrigerant collides with the fin in it when flowing through circulation passage and contacts so that the turbulivity of refrigerant increases By force, extend the refrigerant residence time, fin surface increases and refrigerant contact area.

The shape of fin is more complicated, and heat transfer effect is better；The quantity of fin is more, and heat transfer effect is better；The specification of fin Bigger, heat transfer effect is better；The spacing of fin is smaller, and heat transfer effect is better.

Unit plate body is made of aluminum alloy materials, and the closure plate is made of aluminum alloy materials.Using aluminum alloy materials To improve heat exchange efficiency, to optimize ice-making effect, working efficiency is promoted.

Compared with prior art, there is the plate ice machine of double plate evaporators to has the following advantages for this：

By the way that serpentine-like bending path is arranged to increase length of flow across, the residence time of refrigerant, while flowing through pipe The fin that variform is added on road inner wall increases the turbulence intensity of refrigerant, residence time by the complex road condition of flow path, with The refrigerant reached in pipeline comes into full contact with heat exchange, final optimization pass condensation effect with side wall, and improving heat exchanging efficiency thickeies ice making production Product.

Description of the drawings

The main view sectional view of veneer is evaporated in this plate ice machine of Fig. 1.

Fig. 2 is the side view partial cutaway view that double plates are evaporated in this plate ice machine.

Fig. 3 is the external structure that double plates are evaporated in this plate ice machine.

Fig. 4 is internal structure stereogram before this plate ice machine.

Fig. 5 is internal structure stereogram behind this plate ice machine.

In figure, 1, unit plate body；2, raised line；3, circulation passage；4, fin；5, closure plate；6, liquid supply pipe；7, liquid back pipe；8, Floor is installed；9, mounting base；9a, outer groove；9b, inside groove；10, gap is overheated；11, fuselage cover；12, cold water storage cistern；13, ice making water Pump；14, ice making feed pipe；15, ice making return flume；16, boiler；17, water pump is deiced；18, feed pipe is deiced；19, it deices back Sink；20, compressor；21, double plates are evaporated；22, trash ice motor；23, driving pulley；24, mace；25, strainer；26, go out Ice mouth.

Specific implementation mode

It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further Description, but the utility model is not limited to these examples.

As shown in Figures 1 to 5, this has pair plate ice machine of plate evaporators, including fuselage cover 11, is set in fuselage cover 11 It sets refrigeration system, ice making water-carriage system, deice water-carriage system and ice crushing mechanisms, refrigeration system includes in loop-coupled compressor 20, condenser, expansion valve and evaporator, ice making water-carriage system include that the cold water storage cistern 12, ice making water pump 13, ice making being connected by circulation supply Water pipe 14 and ice making return flume 15 deice water-carriage system and include the boiler 16 being connected by circulation, deice water pump 17, deice feed pipe 18 and return flume 19 is deiced, ice crushing mechanisms includes trash ice motor 22, driving pulley 23 and mace 24；Evaporator includes several In the double plates 21 of evaporation arranged in parallel, it includes the opposite evaporation veneer of two panels to evaporate double plates 21, and two panels evaporates the top of veneer It is fixedly connected with by installing floor 8, bottom is fixedly connected with by mounting base 9, and two panels forms overheat gap 10, two panels between evaporating veneer The opposite lateral wall for evaporating veneer is chill surface, and the relative inner wall that two panels evaporates veneer is heat-absorbent surface, if evaporation veneer includes Splicing component is arranged in the upper and lower edge of dry unit plate body 1, unit plate body 1, is put down in unit plate body 1 several to being arranged The section of circulation passage 3, circulation passage 3 is rectangle, evenly distributed several fins 4, unit plate body on the inner wall of circulation passage 3 The fixed closure plate 5 in 1 both sides, closure plate 5 is interior to be arranged cavity, and circulation passage 3 is connected with cavity, and one end of 5 internal cavity of closure plate is Closed plate is arranged in opening, the other end, and the cavity opening of two closure plates 5 on same unit plate body 1 is in oppositely arranged up and down；It is several Unit plate body 1 is formed along file by splicing component connected, and the closure plate 5 of the neighbouring plate body of Unit two 1 makes connection to just connecting The cavity opening of closure plate 5 is connected in sealing, is located on a side stopboard 5 of the unit plate body 1 of bottommost and is connected to liquid supply pipe 6, is located at Liquid back pipe 7 is connected on one side stopboard 5 of the unit plate body 1 of topmost；Ice making feed pipe 14 is located at outside two of evaporation pair plate 21 Top side wall, for several spray apertures on ice making feed pipe 14 towards chill surface, the both sides of mounting base 9 have outer groove 9a, outer groove 9a It is connected in the lower section of chill surface, one end of outer groove 9a is closed, and other end flow-guiding mouth is connected ice making return flume 15；Deice feed pipe 18 Positioned at 10 top of overheat gap of the double plates of evaporation 21, several spray apertures on feed pipe 18 are deiced towards heat-absorbent surface, mounting base 9 There is inside groove, inside groove linking to deice return flume in the lower section of heat-absorbent surface, the closing of inside groove one end, the linking of other end flow-guiding mouth at middle part 19；Mace 24 is located at the lower section of evaporator, and ice mouth 26 is arranged in the lower section of mace 24, and gear sets strainer 25 at ice mouth 26, Cold water storage cistern 12 is connected in the lower section of strainer 25.

Fin 4 is linear type or wave line style, and the cross sectional shape of fin 4 is arc-shaped or triangle.

The quantity of fin 4 is 8~20 in each circulation passage 3, and the width of fin 4 is 0.3~1.8mm, the height of fin 4 Degree is 0.4~2.1mm, and the spacing between adjacent lugs 4 is 1.2~3.6mm.

The spacing for overheating gap 10 is 30mm~50mm.

Splicing component includes the raised line 2 positioned at 1 bottom side of unit plate body, and raised line 2 is dovetail profile bar body, and splicing component further includes Groove positioned at 1 top side of unit plate body, groove are dovetail groove, and raised line 2, which is inserted into groove, forms chimeric clamping.The clamping of dove-tail form Cooperation can effectively realize being connected between two boards body, avoid two plates from being detached from clamping easily by dovetail profile.

Unit plate body 1 positioned at topmost is connected with installation floor 8, and raised line 2 is arranged in the bottom side of installation floor 8, and raised line 2 is inserted Enter and forms chimeric clamping in the groove of 1 top side of unit plate body；Unit plate body 1 positioned at bottommost is connected with mounting base 9, mounting base Dovetail groove is arranged in 9 top, and the raised line 2 of 1 bottom side of unit plate body, which is inserted into dovetail groove, forms chimeric clamping.

The operation method of plate ice machine, includes the following steps：

1), refrigerant is compressed by compressor 20, condenser and expansion valve, is condensed, vaporizing feeding evaporation by booting The liquid supply pipe 6 of device；

2), refrigerant enters in the unit plate body 1 of each evaporation veneer bottommost, by several circulation passages 3 by unit The side of plate body 1 flows to the other side, reaches the other side and is entered in the adjacent unit plate body 1 in top by the closure plate 5 communicated again, by This carries out snakelike bending flow path in several closure plates 5 and several unit plate bodys 1, makes two panels evaporation single during refrigerant flows through The outside chill surface of plate is condensed, and refrigerant finally flows out evaporation veneer with persistent loop refrigeration operation by liquid back pipe 7；Pass through Cold water in cold water storage cistern 12 is delivered to ice making feed pipe 14 by ice making water pump 13, further passes through the spray apertures of ice making feed pipe 14 Spraying cold water is carried out to two outer walls of evaporation pair plate 21, Cold Water Exposure chill surface condenses after being absorbed heat to freeze, extra flow The outer groove 9a for entering mounting base 9, is collected to ice making return flume 15, is back to cold water storage cistern 12 by pipeline, persistent loop spray makes steaming Ice sheet progressive additive in hair 21 outside wall surface of double plates；

3), when ice sheet reaches required thickness in evaporation 21 outside wall surface of double plates, compressor 20 stops defeated to the double plates 21 of evaporation Enter refrigerant；Ice making water pump 13 is stopped, and no longer sprays cold water in two outside wall surfaces of evaporation pair plate 21；

4) startup of water pump 17, is deiced, by the delivery in boiler 16 to feed pipe 18 is deiced, further by deicing The spray apertures of feed pipe 18 carry out sprinkling hot water to two inner walls of evaporation pair plate 21, pass through the inside heat-absorbent surface for evaporating double plates 21 It absorbs heat to hot water, is further conducted heat to its outside chill surface by every evaporation veneer, melted by heat and contacted Face ice body makes slab fall off；The hot-water collection fallen is collected to the inside groove of mounting base 9 and deices return flume 19, is returned by pipeline It is flow to boiler 16, persistent loop spray makes the ice sheet in evaporation 21 outside wall surface of double plates all fall off；

5), trash ice motor 22 is opened, and drives mace 24 to carry out continuing rotation by driving pulley 23, slab, which falls, to pass through It crosses mace 24 and is fractured into required specification, then slab is fallen on strainer 25, is acted on by slide guide and being discharged by ice mouth 26 Plate ice product, trash ice are recycled to by strainer 25 in cold water storage cistern 12.

By the blocking or conducting set by closure plate 5, multiple unit plate bodys 1 connection of longitudinal arrangement is formed into multistage bending Circulation path, thus extend flow path length of the refrigerant in evaporator, extend delay duration of the refrigerant in evaporator, To realize the abundant effect of refrigerant, its utilization rate is improved, enhances heat transfer effect.

Refrigerant collides with the fin 4 in it when flowing through circulation passage 3 and contacts so that the turbulivity of refrigerant increases By force, extend the refrigerant residence time, 4 surface of fin increases and refrigerant contact area.

The shape of fin 4 is more complicated, and heat transfer effect is better；The quantity of fin 4 is more, and heat transfer effect is better；The rule of fin 4 Lattice are bigger, and heat transfer effect is better；The spacing of fin 4 is smaller, and heat transfer effect is better.

Unit plate body 1 is made of aluminum alloy materials, and closure plate 5 is made of aluminum alloy materials.Use aluminum alloy materials with Heat exchange efficiency is improved, to optimize ice-making effect, promotes working efficiency.

There is the plate ice machine of double plate evaporators to has the following advantages for this：

By the way that serpentine-like bending path is arranged to increase length of flow across, the residence time of refrigerant, while flowing through pipe The fin 4 that variform is added on road inner wall increases the turbulence intensity of refrigerant, residence time by the complex road condition of flow path, Heat exchange, final optimization pass condensation effect are come into full contact with to reach the refrigerant in pipeline and side wall, improving heat exchanging efficiency thickeies ice making Product.

The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.

Although unit plate body 1 is used more herein；Raised line 2；Circulation passage 3；Fin 4；Closure plate 5；Liquid supply pipe 6；It returns Liquid pipe 7；Floor 8 is installed；Mounting base 9；Outer groove 9a；Inside groove；Overheat gap 10；Fuselage cover 11；Cold water storage cistern 12；Ice making water pump 13；Ice making feed pipe 14；Ice making return flume 15；Boiler 16；Deice water pump 17；Deice feed pipe 18；Deice return flume 19；Pressure Contracting machine 20；Evaporation pair plate 21；Trash ice motor 22；Driving pulley 23；Mace 24；Strainer 25；The terms such as ice mouth 26, but simultaneously It is not excluded for the possibility using other terms.The use of these items is only for more easily describe and explain the utility model Essence；It is contrary to the spirit of the present invention to interpret them as any one of the additional limitations.

Claims

1. the plate ice machine with double plate evaporators, including fuselage cover, the interior setting refrigeration system of the fuselage cover, ice making water delivery System deices water-carriage system and ice crushing mechanisms, and the refrigeration system includes in loop-coupled compressor, condenser, expansion valve And evaporator, the ice making water-carriage system include the cold water storage cistern being connected by circulation, ice making water pump, ice making feed pipe and ice making return water Slot, the water-carriage system that deices includes the boiler being connected by circulation, deices water pump, deices feed pipe and deice return flume, described Ice crushing mechanisms includes trash ice motor, driving pulley and mace；It is characterized in that, it is in parallel that the evaporator, which includes several, The double plates of the evaporation of row, the double plates of evaporation include the opposite evaporation veneer of two panels, evaporate described in two panels and pass through at the top of veneer Installation floor is fixedly connected with, and bottom is fixedly connected with by mounting base, is formed between evaporation veneer described in two panels and is overheated gap, described in two panels The opposite lateral wall for evaporating veneer is chill surface, and the relative inner wall that veneer is evaporated described in two panels is heat-absorbent surface, and the evaporation is single Plate includes several unit plate bodys, and splicing component is arranged in the upper and lower edge of the unit plate body, put down in the cell board body to Several circulation passages are arranged, the section of the circulation passage is rectangle, evenly distributed on the inner wall of the circulation passage Several fins, the fixed closure plate in both sides of the unit plate body, the closure plate is interior to be arranged cavity, the circulation passage and the sky Chamber is connected, and one end of the closure plate internal cavity is opening, and closed plate, two closure plates on same unit plate body are arranged in the other end Cavity opening in up and down it is oppositely arranged；Several unit plate bodys formed by splicing component along file it is connected, it is neighbouring The closure plate of two unit plate bodys makes the cavity opening of connection closure plate be connected in sealing, is located at the unit plate body of bottommost to just connecting A side stopboard on be connected to liquid supply pipe, be connected to liquid back pipe on a side stopboard of the unit plate body of topmost；The ice making supplies Water pipe is located at the top of two lateral walls of the double plates of evaporation, and several spray apertures on the ice making feed pipe are towards the refrigeration The both sides in face, the mounting base have outer groove, and the outer groove linking is in the lower section of the chill surface, an end seal of the outer groove It closes, other end flow-guiding mouth is connected the ice making return flume；The feed pipe that deices is located at the top of the overheat gap of the double plates of evaporation, institute It states and deices several spray apertures on feed pipe towards the heat-absorbent surface, the middle part of the mounting base has inside groove, the inside groove rank It is connected to the lower section of the heat-absorbent surface, described inside groove one end is closed, and return flume is deiced described in the linking of other end flow-guiding mouth；The wolf's fang Stick is located at the lower section of the evaporator, and ice mouth is arranged in the lower section of the mace, and gear sets strainer at the ice mouth, described cold Water tank is connected in the lower section of the strainer.

2. the plate ice machine with double plate evaporators according to claim 1, which is characterized in that the fin be linear type or The cross sectional shape of wave line style, the fin is arc-shaped or triangle.

3. the plate ice machine with double plate evaporators according to claim 1, which is characterized in that in each circulation passage The quantity of fin is 8~20, and the width of the fin is 0.3~1.8mm, and the height of the fin is 0.4~2.1mm, phase Spacing between the adjacent fin is 1.2~3.6mm.

4. the plate ice machine with double plate evaporators according to claim 1, which is characterized in that the spacing in the overheat gap For 30mm~50mm.

5. the plate ice machine with double plate evaporators according to claim 1, which is characterized in that the splicing component includes position Raised line in unit plate body bottom side, the raised line are dovetail profile bar body, and the splicing component further includes being located at the unit The groove of plate body top side, the groove are dovetail groove, and the raised line, which is inserted into the groove, forms chimeric clamping.

6. the plate ice machine with double plate evaporators according to claim 5, which is characterized in that be located at the list of topmost First plate body is connected with installation floor, and raised line is arranged in the bottom side of the installation floor, and the raised line is inserted into the recessed of unit plate body top side Chimeric clamping is formed in slot；The unit plate body positioned at bottommost is connected with mounting base, and swallow is arranged in the top of the mounting base Stern notch, the raised line of unit plate body bottom side, which is inserted into the dovetail groove, forms chimeric clamping.