CN218469619U - Clamping-pressing type heat exchanger - Google Patents

Abstract

The utility model discloses a card pressure formula heat exchanger belongs to heat exchanger processing equipment technical field. A clamping and pressing type heat exchanger comprises a base and a plurality of straight pipes fixedly installed in the base, wherein the straight pipes are sequentially communicated through U-shaped pipes, a sealing part is arranged at the interface of the U-shaped pipes and the straight pipes, the U-shaped pipes and the straight pipes are fixedly connected through clamping and pressing grooves, adjusting grooves are formed in the straight pipes, rubber pads for sealing are arranged in the adjusting grooves, and when the clamping and pressing grooves are mutually clamped, the adjusting grooves are extruded to enable the rubber pads to extrude and fill gaps between the straight pipes and the U-shaped pipes; the utility model discloses a set up the adjustment tank on the straight tube, when the adjustment tank afterbody is extruded and is out of shape, its front end can perk and closely laminate with the pipeline inner wall of U-shaped pipe, can improve the joint strength and the sealed effect of junction; through installing sealed the pad in the adjustment tank, the rubber pad can be extruded from the adjustment tank, fills the gap between straight tube and the U-shaped pipe, can further improve the sealed effect of straight tube and venturi tube junction.

Description

Clamping-pressing type heat exchanger

Technical Field

The utility model relates to a heat exchanger processing equipment technical field especially relates to a card pressure formula heat exchanger.

Background

In order to further control the temperature and humidity in the incubator, heat exchangers are usually installed in the existing incubators to improve the control precision of the temperature and the humidity, heat exchange tubes and elbows of the existing heat exchangers are fixed by welding, but the welding easily causes defects of workpiece deformation, air holes and the like, and after the incubator is used for a long time, welding seams of the heat exchange tubes and the elbows generate gaps, so that heat exchange medium leakage is caused.

Through retrieval, the Chinese patent application number: 202220484268.7, filing date: 2022.03.01, a novel heat exchanger is disclosed, comprising: many heat exchange tubes and elbow, two adjacent heat exchange tubes are linked together through the elbow, the elbow both ends are formed with the expand tube portion respectively, the heat exchange tube inserts inside the expand tube portion, heat exchange tube and expand tube portion card are pressed fixedly. The heat exchange tube and the elbow are fixed by clamping and pressing, and the sealing ring is arranged between the heat exchange tube and the elbow for sealing, the heat exchanger has no welding line, and the problem that the heat exchange medium leaks due to the fact that the welding line at the joint of the heat exchange tube and the elbow generates a gap is solved; the heat exchange tube and the bent tube are both made of stainless steel materials, and compared with copper, the stainless steel has low cost and is not easy to oxidize, so that the problems of high cost and easy oxidation of the surface of a copper heat exchanger are solved; the heat exchange tube and the frame are fixed by the elastic fixing ring, and the assembly is simple. However, in practical use, the scheme finds that the connection strength is insufficient, the sealing capability is poor, and the situation of leakage is easy to occur.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving prior art in order to connect intensity not enough, sealing capability is relatively poor, the problem of seepage appears easily, and the card pressure formula heat exchanger that provides.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a card pressure formula heat exchanger, includes frame and fixed mounting many straight tubes in the frame, many straight tubes communicate in proper order through the U-shaped pipe, just the U-shaped pipe is provided with the sealing with the straight tube kneck, the U-shaped pipe passes through card indent fixed connection with the straight tube, set up the adjustment tank in the straight tube, be provided with the rubber pad that is used for sealed usefulness in the adjustment tank, when the mutual joint in card indent, the adjustment tank receives the extrusion to make the rubber pad extrude and fill the gap between straight tube and the U-shaped pipe.

In order to prevent the joint from being crushed, it is preferable that the cross-sectional shape of the card pressing groove is semicircular.

In order to increase the force bearing area, the cross section of the clamping groove is preferably trapezoidal.

In order to enhance the stability of the connection, it is preferable that the cross-sectional shape of the card pressing groove is triangular.

In order to increase the connection strength, preferably, the clamping and pressing grooves are provided with a plurality of groups, and the plurality of groups of clamping and pressing grooves are symmetrically arranged on two sides of the bump.

In order to prolong the service life of the tube, the straight tube and the U-shaped tube are preferably made of stainless steel.

In order to ensure the connection tightness, preferably, the sealing part comprises a convex block arranged on the U-shaped pipe, a sealing ring is fixedly connected in the convex block, and the sealing ring is attached to the outer wall of the straight pipe.

Compared with the prior art, the utility model provides a card pressure formula heat exchanger possesses following beneficial effect:

1. according to the clamping and pressing type heat exchanger, the straight pipe is provided with the adjusting groove, when the tail part of the adjusting groove is extruded and deformed, the front end of the adjusting groove can be tilted to be tightly attached to the inner wall of the pipeline of the U-shaped pipe, so that the connection strength and the sealing effect of a joint can be improved;

2. according to the clamping and pressing type heat exchanger, the sealing gasket is arranged in the adjusting groove, when the adjusting groove is extruded, the rubber gasket can be extruded out of the adjusting groove, so that a gap between the straight pipe and the U-shaped pipe is filled, and the sealing effect of the joint of the straight pipe and the U-shaped pipe can be further improved;

3. this card pressure formula heat exchanger selects into the stainless steel through the material with straight tube and U-shaped pipe, can have higher corrosion resistance and oxidation resistance, when using for a long time, also can not appear corrosion or oxidation phenomenon, and its heat conductivity is high moreover, can increase heat exchanger's heat exchange efficiency.

The part which is not involved in the device is the same as the prior art or can be realized by adopting the prior art, the utility model discloses a through set up the adjustment tank on the straight tube, when the afterbody of adjustment tank is extruded and deformed, its front end can be perk and closely laminate with the pipeline inner wall of U-shaped pipe, can improve the joint strength and the sealed effect of junction; through installing sealed the pad in the adjustment tank, when the adjustment tank was extruded, the rubber pad can be followed the adjustment tank and extruded, and then fills the gap between straight tube and the U-shaped pipe, can further improve the sealed effect of straight tube and 3 junctions of venturi tube.

Drawings

Fig. 1 is a front view of a clamp-press type heat exchanger according to the present invention;

fig. 2 is an enlarged view of a portion a in fig. 1 of the clamping and pressing type heat exchanger according to the present invention.

Fig. 3 is a first schematic structural diagram of the present invention;

fig. 4 is a schematic structural diagram of the present invention.

Fig. 5 is a schematic structural view of a U-shaped tube of a clamping and pressing type heat exchanger according to the present invention;

fig. 6 is a schematic structural diagram of a straight pipe of a clamp-press type heat exchanger provided by the utility model.

In the figure: 1. a machine base; 2. a straight pipe; 201. a rubber pad; 202. an adjustment groove; 3. a U-shaped tube; 301. a seal ring; 302. a bump; 4. a first clamping and pressing groove; 5. a second clamping and pressing groove; 6. and a third clamping and pressing groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example 1:

referring to fig. 1, fig. 2, fig. 5 and fig. 6, a clamp pressure formula heat exchanger, frame 1 that includes the concatenation of multiunit fin and run through many straight tubes 2 of fin fixed mounting in frame 1, many straight tubes 2 communicate end to end in proper order through U-shaped pipe 3, only leave an import and an export, and U-shaped pipe 3 and 2 knecks of straight tube are provided with the sealing, a leakproofness for guaranteeing the junction, reduce the leakage, the sealing is including setting up lug 302 on U-shaped pipe 3, fixedly connected with sealing washer 301 in the lug 302, sealing washer 301 adopts high temperature resistant material to make, like high temperature resistant rubber etc., sealing washer 301 laminates with 2 outer walls of straight tube mutually, can guarantee the sealed of U-shaped pipe 3 and 2 junctions of straight tube.

U-shaped pipe 3 passes through the mode fixed connection of card indent with straight tube 2, regulation groove 202 has been seted up in the straight tube 2, be provided with the rubber pad 201 that is used for sealed usefulness in the regulation groove 202, rubber pad 201 is the ring shape, before using, in the opening part cover income regulation groove 202 with rubber pad 201 from regulation groove 202, when the card indent extrudees downwards, regulation groove 202 receives extrusion deformation can extrude rubber pad 201 from regulation groove 202, can fill the gap between straight tube 2 and U-shaped pipe 3, can further improve the sealed effect of straight tube 2 and U-shaped pipe 3 junction, and regulation groove 202 afterbody receives extrusion deformation, its front end can perk inseparable laminating at the pipeline inner wall of U-shaped pipe 3, can further improve the joint strength and the sealed effect of junction, the card indent that the multiunit was provided with the multiunit, the indent symmetry that the multiunit blocked sets up in lug 302 both sides, the card indent quantity of each side is provided with two at least, and be circumference evenly distributed at the circumferential surface of U-shaped pipe 3.

Here, the straight tube 2 and the 3 materials of U-shaped pipe are the stainless steel, and the corrosion resistance and the oxidation resistance of stainless steel are good, can be long-time, help improving its life, and its heat conductivity is high moreover, can increase the heat exchange efficiency of heat exchanger.

When the device is installed, dirt such as burrs, sawdust and the like at the pipe orifices of the straight pipe 2 and the U-shaped pipe 3 needs to be removed completely, so that the situation that during installation, the burrs on the straight pipe 2 or the burrs on the U-shaped pipe 3 enter a joint part, and the outer surface of the straight pipe 2 cannot be tightly attached to the inner surface of the U-shaped pipe 3 possibly, so that leakage occurs after long-time use is avoided, furthermore, when the straight pipe 2 is inserted into the U-shaped pipe 3, a sealing ring 301 in the U-shaped pipe 3 is scratched, the sealing effect is influenced, during the connection process, the straight pipe 2 is forcibly inserted into the U-shaped pipe 3, then a special clamping and pressing tool is used for clamping a groove on the clamping and pressing tool with a convex block 302 on the U-shaped pipe 3, after the position is determined, the clamping and the clamp is slowly pressed to close a jaw, at the moment, the straight pipe 2 and the U-shaped pipe 3 are connected in a clamping and pressing mode is carried out at the joint part of the straight pipe 2 and the U-shaped pipe 3, the corresponding positions of the surfaces of the straight pipe 2 and the U-shaped pipe 3 can simultaneously generate concave deformation to form a clamping and pressing groove I4 with a semicircular cross section, the clamping and pressing groove I4 with the semicircular cross section is easy to form, the circular shape has the characteristic of uniform stress, the forming can be realized by small force, the phenomenon that the joint part does not have the sealing effect because the straight pipe 2 and the U-shaped pipe 3 are collapsed can be prevented, the circular structure can ensure that the joint part of the straight pipe 2 and the U-shaped pipe 3 is firmly connected, simultaneously, the space at two sides of the sealing ring 301 can be compressed to ensure that the sealing ring 301 is tightly attached to the outer surface of the straight pipe 2, the sealing strength can be enough, the adjusting groove 202 can be extruded by the clamping and pressing groove I4 in the forming process, then the rubber pad 201 can be extruded from the adjusting groove 202 due to the extrusion deformation of the adjusting groove 202, and the extruded part can be filled in the gap between the straight pipe 2 and the U-shaped pipe 3, further improving the sealing effect of the joint of the straight pipe 2 and the U-shaped pipe 3.

Example 2:

referring to fig. 1, 3, 5 and 6, the same as embodiment 1, except that the corresponding positions on the surfaces of the straight tube 2 and the U-shaped tube 3 are depressed to form a second clamping and pressing groove 5 with a trapezoidal cross section, the stressed area of the second clamping and pressing groove 5 with a trapezoidal cross section is large, so that the connection between the straight tube 2 and the U-shaped tube 3 can be firmer, and the two oblique sides of the trapezoid can prevent the tilting of the left side and the right side of the second clamping and pressing groove 5 during clamping and pressing, which results in the reduction of the sealing effect.

Example 3:

referring to fig. 1, 4, 5 and 6, the same as embodiment 1, except that the corresponding positions of the surfaces of the straight tube 2 and the U-shaped tube 3 are depressed to form a triangular clamping and pressing groove three 6, the triangular clamping and pressing groove three 6 also has the characteristic of easy forming, and the triangle has stability to ensure that the clamping and pressing groove three 6 is not deformed by external force, and when the pressure in the pipeline is increased, the connection strength of the joint can be ensured, thereby improving the sealing strength.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (7)

1. The utility model provides a card pressure formula heat exchanger, includes frame (1) and fixed mounting many straight tubes (2) in frame (1), many straight tubes (2) communicate in proper order through U-shaped pipe (3), just U-shaped pipe (3) are provided with the sealing with straight tube (2) kneck, a serial communication port, U-shaped pipe (3) and straight tube (2) are through card indent fixed connection, adjustment tank (202) have been seted up in straight tube (2), be provided with in adjustment tank (202) and be used for sealed rubber pad (201) of usefulness, when the mutual block in card indent, adjustment tank (202) are extruded and are made rubber pad (201) extrude the gap of filling between straight tube (2) and U-shaped pipe (3).

2. The card-pressing heat exchanger according to claim 1, wherein the cross-sectional shape of the card-pressing groove is semicircular.

3. The card-pressing heat exchanger according to claim 1, wherein the cross-sectional shape of the card-pressing groove is trapezoidal.

4. The card-pressing heat exchanger according to claim 1, wherein the cross-sectional shape of the card-pressing groove is triangular.

5. The card-pressing type heat exchanger according to any one of claims 1 to 4, wherein the card-pressing grooves are provided with a plurality of groups, and the plurality of groups of card-pressing grooves are symmetrically arranged on two sides of the bump (302).

6. A clamp-press heat exchanger according to any one of claims 1-4, characterized in that the straight tube (2) and the U-shaped tube (3) are both made of stainless steel.

7. A clamping-pressing heat exchanger according to any one of claims 1 to 4, wherein the sealing portion comprises a projection (302) arranged on the U-shaped pipe (3), a sealing ring (301) is fixedly connected in the projection (302), and the sealing ring (301) is attached to the outer wall of the straight pipe (2).

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