Heater structure

Abstract

The utility model discloses a heater structure, relates to the technical field of mold temperature controllers, and aims to solve the problems that the contact surface between a conventional heater and a water pipe is relatively small and wiring is tedious by adopting a double-end wire outlet mode. A heater structure with high heat exchange efficiency comprises a water pipe, an electric heating pipe is arranged outside the water pipe, the electric heating pipe is in surface contact connection with the water pipe, and the electric heating pipe is spirally wound on the outer edge of the water pipe; and the electric heating tube adopts a single-end wire outgoing form and is connected with an external circuit. According to the heater structure, the electric heating pipe and the water pipe can be in surface contact, and a single-head wire outlet mode is adopted; and in addition, wiring is more convenient during installation.

Description

Technical Field

[0001] The utility model relates to the technical field of mold temperature controllers, in particular to a heater structure. Background Art

[0002] In a traditional non-contact mold temperature controller, the cross-section of the heater inside is generally a round tube structure. After the round tube heater is welded to the water pipe, the contact between the round tube heater and the water pipe is line contact, and the contact surface is small, which leads to low heat exchange efficiency.

[0003] In addition, the heater in the traditional non-contact mold temperature controller adopts a double-ended wiring mode, which makes the wiring complicated and makes its installation extremely inconvenient.

[0004] For example, the spiral high-temperature armored heater of the satellite high-energy propulsion system with publication number CN213755014U includes a working part, a transition part and a lead-out part; the working part is close to the outer wall of the propulsion system catalytic bed and is wound in a spiral shape along its circumference, and the working part includes an armored protective shell, a heating wire, a dense ceramic skeleton and ceramic powder; the transition part is at a 90° angle to the lead-out direction of the working part, including an armored protective shell, a dense ceramic skeleton, ceramic powder and a transition wire; the lead-out part is composed of an outer sleeve, multiple strands of external leads and high-temperature resistant insulating glue. However, the cross-section of the heater of the Chinese patent with publication number CN213755014U is a circular tube structure with a small contact surface. Utility Model Content

[0005] The utility model solves the problem that the contact surface between the current heater and the water pipe is small and the wiring is complicated using a double-end outlet mode, and proposes a heater structure that can make the electric heating tube and the water pipe have surface contact and adopt a single-end outlet form; the heat exchange efficiency is improved and the wiring is more convenient during installation.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a heater structure, including a water pipe, an electric heating pipe is arranged outside the water pipe, the electric heating pipe is connected with the water pipe surface contact, and the electric heating pipe is spirally wound around the outer edge of the water pipe; the electric heating pipe adopts a single-end outlet form and is connected to the external circuit.

[0007] In the technical solution, a corresponding electric heating tube is arranged on the outer edge of the water pipe, and the electric heating tube is attached to the surface of the water pipe by spiral winding. More importantly, the electric heating tube and the water pipe are connected by surface contact, which greatly improves the contact area between the two. In addition, the electric heating tube is connected by single-end wiring, which is more convenient and quicker than double-end wiring.

[0008] The utility model is further configured as follows: the electric heating pipe comprises a shell and a plurality of heating wires arranged inside the shell, and the space between the heating wires and the shell is filled with insulating fillers.

[0009] In the present technical solution, the electric heating tube mainly includes a shell, a heating wire and an insulating filler, which together can achieve the effects of heating and insulation.

[0010] The utility model is further configured as follows: the heating wires at one end of the electric heating tube are connected to each other, and the heating wire at the other end of the electric heating tube is connected to an external circuit.

[0011] In the present technical solution, the adjacent heating wires at one end of the electric heating tube are connected, and the connection method is not limited here; the heating wires at the other end of the electric heating tube are connected to the external circuit; it is ensured that no outgoing wire is required at one end of the electric heating tube, and only a single-end outgoing wire is required.

[0012] The utility model is further configured as follows: the shell of the electric heating pipe includes at least one contact plane, and the contact plane is welded to the outer edge surface of the water pipe.

[0013] Different from the existing round tube structure, the electric heating end tube shell in the present technical solution includes at least one contact plane, through which the outer edge surface of the water pipe can be contacted and finally welded to ensure the increase of the contact area between the two.

[0014] The utility model is further configured as follows: the electric heating tube is a flat tube structure, the flat tube structure includes two sections of symmetrical contact surfaces and two sections of symmetrical curved surfaces, and the contact surfaces and the curved surfaces are connected in sequence.

[0015] In the present technical solution, the structure of the electric heating tube is specifically a flat tube structure, which mainly includes two contact surfaces and a curved surface connecting the two contact surfaces. Specifically, the contact surface is a contact plane, and one of the contact surfaces is in surface contact with the outer edge surface of the water pipe.

[0016] The utility model is further configured such that the distances between the plurality of heating wires and the outer edge surface of the water pipe are all equal.

[0017] In the present technical solution, in order to ensure the heat exchange efficiency more evenly, the distances from the multiple heating wires to the outer edge of the water pipe are made the same to prevent local overheating or uneven temperature.

[0018] The utility model is further configured as follows: the shell is specifically a stainless steel shell.

[0019] In this technical solution, the stainless steel shell can ensure good thermal conductivity.

[0020] The utility model is further configured such that the pitches of adjacent electric heating tubes are equal.

[0021] In this technical solution, the pitches of the electric heating tubes are the same, ensuring uniform heat exchange of the water tubes.

[0022] The utility model is further configured as follows: joints are arranged at both ends of the water pipe, the joints include a water inlet joint and a water outlet joint, and the water pipe is connected to the joints by brazing.

[0023] In this technical solution, the water pipe and the joint are connected by brazing to ensure the sealing performance of the water pipe. After the connection, the water pipe and the joint need to pass an air pressure test.

[0024] The utility model can bring the following beneficial effects:

[0025] 1. The utility model relates to a heater structure that enables the electric heating tube and the water tube to be in surface contact, greatly improving the heat exchange efficiency;

[0026] 2. The heater structure of the utility model adopts a single-end outlet form, which makes wiring more convenient during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a heater structure of the utility model.

[0028] Figure 2 It is a partial enlarged schematic diagram of A of a heater structure of the utility model.

[0029] Figure 3 The utility model is a schematic diagram of the structure of a heater structure about a heating wire at one end of an electric heating tube.

[0030] Figure 4 It is a structural schematic diagram of a heater structure in the prior art.

[0031] Figure 5 It is a partial enlarged schematic diagram of the heater structure of the prior art with respect to B.

[0032] Among them, 1, water pipe 2, electric heating pipe 2-1, shell 2-2, insulating filler 2-3, heating wire 3, round tube structure. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific implementation method described here is only an optimal embodiment of the utility model, which is only used to explain the utility model and does not limit the protection scope of the utility model. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0034] refer to Figure 4 and Figure 5 In the conventional non-contact mold temperature controller, the heater used is a round tube structure 3. After the round tube structure 3 is welded with the water pipe 1, the contact surface between the two is small due to the line contact, and the heat transfer efficiency is not high. After the round tube structure 3 is assembled with the round water pipe, it is a line-surface connection. After welding, the contact area is small and the heat transfer efficiency is relatively low.

[0035] Embodiment 1:

[0036] In view of the above technical problems, this embodiment discloses a heater structure, referring to Figure 1 , Figure 2 as well as Figure 3 It mainly includes a water pipe 1 and an electric heating pipe 2. A corresponding electric heating pipe 2 is arranged on the outer surface of the water pipe 1. The electric heating pipe 2 is connected to the water pipe 1 by surface contact. More specifically, the electric heating pipe 2 is spirally wound around the outer edge of the water pipe 1, that is, the electric heating pipe 2 can cover the water pipe 1; in addition, the electric heating pipe 2 in the technical solution specifically adopts the form of a single-end outlet, and the electric heating pipe 2 can be connected to an external line.

[0037] In the present technical solution, a corresponding electric heating tube 2 is arranged on the outer edge of the water pipe 1, and the electric heating tube is attached to the surface of the water pipe by spiral winding. More importantly, the electric heating tube 1 and the water pipe 2 are connected in surface contact, which greatly improves the contact area between the two. In addition, the electric heating tube 2 is connected in the form of a single-end outlet, which is more convenient and quicker than double-end wiring.

[0038] refer to Figure 2 The electric heating tube 2 in the technical solution mainly includes a shell 2-1, a heating wire 2-3 inside the shell 2-1, and an insulating filler 2-2 between the shell 2-1 and the heating wire 2-3. A plurality of heating wires 2-3 are arranged inside the shell 2-1, and the shell 2-1 is filled with the insulating filler 2-2, and the insulating filler 2-2 also wraps the heating wire 2-3.

[0039] More specifically, the housing 2-1 is a stainless steel housing. In this technical solution, the stainless steel housing can ensure good thermal conductivity.

[0040] In this embodiment, the number of heating wires 2-3 inside the housing 2-1 is two. Figure 2 and Figure 3 .

[0041] In this embodiment, the insulating filler 2-2 is specifically magnesium oxide. Of course, it is not limited to this material. It is mainly capable of achieving insulating filling, and will not be elaborated here.

[0042] The shell 2 - 1 , the heating wire 2 - 3 and the insulating filler 2 - 2 in the electric heating tube 2 can achieve heating and insulating effects together.

[0043] refer to Figure 1 and Figure 3 Regarding the electric heating tube 2, the heating wires 2-3 at one end thereof are connected to each other, and the heating wires 2-3 at the other end thereof are connected to an external circuit.

[0044] The adjacent heating wires 2-3 at one end of the electric heating tube 2 are connected, and the connection method is not limited here; the heating wires 2-3 at the other end of the electric heating tube 2 are all connected to the external circuit; it is ensured that no outgoing wire is required at one end of the electric heating tube 2, and only a single-end outgoing wire is required.

[0045] In this embodiment, Figure 1 The two heating wires 2-3 at one end of the left side of the electric heating tube 2 are connected. Specifically, Figure 3 The two heating wires 2-3 in the figure are connected; of course, it can also be regarded as the same heating wire 2-3 obtained by bending; that is, the specific connection method of the heating wire 2-3 is not limited here.

[0046] In the present technical solution, the shell 2 - 1 of the electric heating tube 2 needs to have at least one contact plane, through which the contact plane of the section contacts the outer edge surface of the water pipe 1 and the two are welded.

[0047] It is necessary to ensure that the electric heating tube 2 and the water pipe 1 are completely welded to ensure that there is no gap or bubble between the water pipe 1 and the electric heating tube 2 .

[0048] In the technical solution, the distances between the plurality of heating wires 2-3 and the outer edge surface of the water pipe 1 are respectively recorded as D1, D2, D3...Dn. In order to ensure uniform heat exchange, D1=D2=D3...=Dn exists.

[0049] In this embodiment, two heating wires 2 - 3 are provided, and the distances between the two heating wires 2 - 3 and the outer edge surface of the water pipe 1 are respectively recorded as D1 and D2, and the distances between the two are equal, that is, D1=D2.

[0050] For the spirally wound heating tube 2 , the pitches of the adjacent electric heating tubes 2 are the same. Furthermore, the pitches of the electric heating tubes 2 are the same, thereby ensuring uniform heat exchange of the water tube 1 .

[0051] This embodiment also provides a non-contact mold temperature controller, which includes the above-mentioned heater structure.

[0052] Example 2

[0053] refer to Figure 1 , Figure 2 as well as Figure 3, mainly includes a water pipe 1 and an electric heating pipe 2. A corresponding electric heating pipe 2 is arranged on the outer surface of the water pipe 1. The electric heating pipe 2 is connected to the water pipe 1 by surface contact. More specifically, the electric heating pipe 2 is spirally wound around the outer edge of the water pipe 1, that is, the electric heating pipe 2 can cover the water pipe 1; in addition, the electric heating pipe 2 in the technical solution specifically adopts the form of a single-end outlet, and the electric heating pipe 2 can be connected to an external line.

[0054] In the present technical solution, a corresponding electric heating tube 2 is arranged on the outer edge of the water pipe 1, and the electric heating tube is attached to the surface of the water pipe by spiral winding. More importantly, the electric heating tube 1 and the water pipe 2 are connected in surface contact, which greatly improves the contact area between the two. In addition, the electric heating tube 2 is connected in the form of a single-end outlet, which is more convenient and quicker than double-end wiring.

[0055] refer to Figure 2 The electric heating tube 2 in the technical solution mainly includes a shell 2-1, a heating wire 2-3 inside the shell 2-1, and an insulating filler 2-2 between the shell 2-1 and the heating wire 2-3. A plurality of heating wires 2-3 are arranged inside the shell 2-1, and the shell 2-1 is filled with the insulating filler 2-2, and the insulating filler 2-2 also wraps the heating wire 2-3.

[0056] More specifically, the housing 2-1 is a stainless steel housing. In this technical solution, the stainless steel housing can ensure good thermal conductivity.

[0057] In this technical solution, the number of heating wires 2-3 inside the housing 2-1 is two. For details, please refer to Figure 2 and Figure 3 .

[0058] In the present technical solution, the insulating filler 2-2 is specifically magnesium oxide. Of course, it is not limited to this material. It is mainly capable of achieving insulating filling, and will not be elaborated here.

[0059] The shell 2 - 1 , the heating wire 2 - 3 and the insulating filler 2 - 2 in the electric heating tube 2 can achieve heating and insulating effects together.

[0060] refer to Figure 1 and Figure 3 Regarding the electric heating tube 2, the heating wires 2-3 at one end thereof are connected to each other, and the heating wires 2-3 at the other end thereof are connected to an external circuit.

[0061] The adjacent heating wires 2-3 at one end of the electric heating tube 2 are connected, and the connection method is not limited here; the heating wires 2-3 at the other end of the electric heating tube 2 are all connected to the external circuit; it is ensured that no outgoing wire is required at one end of the electric heating tube 2, and only a single-end outgoing wire is required.

[0062] In this technical solution, Figure 1 The two heating wires 2-3 at one end of the left side of the electric heating tube 2 are connected. Specifically, Figure 3 The two heating wires 2-3 in the figure are connected; of course, it can also be regarded as the same heating wire 2-3 obtained by bending; that is, the specific connection method of the heating wire 2-3 is not limited here.

[0063] In the present technical solution, the shell 2 - 1 of the electric heating tube 2 needs to have at least one contact plane, through which the contact plane of the section contacts the outer edge surface of the water pipe 1 and the two are welded.

[0064] It is necessary to ensure that the electric heating tube 2 and the water pipe 1 are completely welded to ensure that there is no gap or bubble between the water pipe 1 and the electric heating tube 2 .

[0065] In the technical solution, the distances between the plurality of heating wires 2-3 and the outer edge surface of the water pipe 1 are respectively recorded as D1, D2, D3...Dn. In order to ensure uniform heat exchange, D1=D2=D3...=Dn exists.

[0066] In the present technical solution, two heating wires 2-3 are provided, and the distances between the two heating wires 2-3 and the outer edge surface of the water pipe 1 are respectively recorded as D1 and D2, and the distances between the two are equal, that is, D1=D2.

[0067] For the spirally wound heating tube 2 , the pitches of the adjacent electric heating tubes 2 are the same. Furthermore, the pitches of the electric heating tubes 2 are the same, thereby ensuring uniform heat exchange of the water tube 1 .

[0068] The difference from the first embodiment is that the electric heating tube 2 of the present embodiment is a flat tube structure. Figure 2 In the flat tube structure, it mainly includes two sections of contact surfaces and two sections of curved surfaces. The two sections of contact surfaces are symmetrical, and the two sections of curved surfaces are also symmetrical; the contact surfaces and the curved surfaces can be connected in sequence.

[0069] In this embodiment, the structure of the electric heating tube 2 is specifically a flat tube structure, which mainly includes two contact surfaces and a curved surface connecting the two contact surfaces. Specifically, the contact surface is a contact plane, and one of the contact surfaces is in surface contact with the outer edge surface of the water pipe 1.

[0070] In this embodiment, one of the contact surfaces can be in surface contact with the outer edge surface of the water pipe 1 and welded.

[0071] In this embodiment, the electric heating tube 2 with a flat tube structure is easier to manufacture than other structures with a contact plane, and can ensure a larger contact area.

[0072] Example 3

[0073] Based on Example 1, for the water pipe 1, corresponding joints are provided at both ends of the water pipe 1. The water pipe 1 is specifically connected to the joints by brazing. The joints mainly include a water inlet joint at one end and a water outlet joint at the other end.

[0074] In this embodiment, the water pipe 1 and the joint are connected by brazing to ensure the sealing performance of the water pipe. After the connection, the water pipe 1 and the joint need to be tested by air pressure.

[0075] Example 4

[0076] A heater structure, referring to Figure 1 , Figure 2 as well as Figure 3 It mainly includes a water pipe 1 and an electric heating pipe 2. A corresponding electric heating pipe 2 is arranged on the outer surface of the water pipe 1. The electric heating pipe 2 is connected to the water pipe 1 by surface contact. More specifically, the electric heating pipe 2 is spirally wound around the outer edge of the water pipe 1, that is, the electric heating pipe 2 can cover the water pipe 1; in addition, the electric heating pipe 2 in the technical solution specifically adopts the form of a single-end outlet, and the electric heating pipe 2 can be connected to an external line.

[0077] In the present technical solution, a corresponding electric heating tube 2 is arranged on the outer edge of the water pipe 1, and the electric heating tube is attached to the surface of the water pipe by spiral winding. More importantly, the electric heating tube 1 and the water pipe 2 are connected in surface contact, which greatly improves the contact area between the two. In addition, the electric heating tube 2 is connected in the form of a single-end outlet, which is more convenient and quicker than double-end wiring.

[0078] refer to Figure 2 The electric heating tube 2 in the technical solution mainly includes a shell 2-1, a heating wire 2-3 inside the shell 2-1, and an insulating filler 2-2 between the shell 2-1 and the heating wire 2-3. A plurality of heating wires 2-3 are arranged inside the shell 2-1, and the shell 2-1 is filled with the insulating filler 2-2, and the insulating filler 2-2 also wraps the heating wire 2-3.

[0079] More specifically, the housing 2-1 is a stainless steel housing. In this technical solution, the stainless steel housing can ensure good thermal conductivity.

[0080] In this technical solution, the number of heating wires 2-3 inside the housing 2-1 is two. For details, please refer to Figure 2 and Figure 3 .

[0081] In the present technical solution, the insulating filler 2-2 is specifically magnesium oxide. Of course, it is not limited to this material. It is mainly capable of achieving insulating filling, and will not be elaborated here.

[0082] The shell 2 - 1 , the heating wire 2 - 3 and the insulating filler 2 - 2 in the electric heating tube 2 can achieve heating and insulating effects together.

[0083] refer to Figure 1 and Figure 3 Regarding the electric heating tube 2, the heating wires 2-3 at one end thereof are connected to each other, and the heating wires 2-3 at the other end thereof are connected to an external circuit.

[0084] The adjacent heating wires 2-3 at one end of the electric heating tube 2 are connected, and the connection method is not limited here; the heating wires 2-3 at the other end of the electric heating tube 2 are all connected to the external circuit; it is ensured that no outgoing wire is required at one end of the electric heating tube 2, and only a single-end outgoing wire is required.

[0085] In this technical solution, Figure 1 The two heating wires 2-3 at one end of the left side of the electric heating tube 2 are connected. Specifically, Figure 3 The two heating wires 2-3 in the figure are connected; of course, it can also be regarded as the same heating wire 2-3 obtained by bending; that is, the specific connection method of the heating wire 2-3 is not limited here.

[0086] In the present technical solution, the shell 2 - 1 of the electric heating tube 2 needs to have at least one contact plane, through which the contact plane of the section contacts the outer edge surface of the water pipe 1 and the two are welded.

[0087] It is necessary to ensure that the electric heating tube 2 and the water pipe 1 are completely welded to ensure that there is no gap or bubble between the water pipe 1 and the electric heating tube 2 .

[0088] In the technical solution, the distances between the plurality of heating wires 2-3 and the outer edge surface of the water pipe 1 are respectively recorded as D1, D2, D3...Dn. In order to ensure uniform heat exchange, D1=D2=D3...=Dn exists.

[0089] In the present technical solution, two heating wires 2-3 are provided, and the distances between the two heating wires 2-3 and the outer edge surface of the water pipe 1 are respectively recorded as D1 and D2, and the distances between the two are equal, that is, D1=D2.

[0090] For the spirally wound heating tube 2 , the pitches of the adjacent electric heating tubes 2 are the same. Furthermore, the pitches of the electric heating tubes 2 are the same, thereby ensuring uniform heat exchange of the water tube 1 .

[0091] In this embodiment, what is different from other embodiments is that the total length of the electric heating tube 2 in this embodiment is 13.5 mm, and the width of the contact surface between the electric heating tube 2 and the water pipe 1 after welding is 10-13 mm, and the effective contact surface accounts for 10 / 13.5 to 13 / 13.5, and the contact area is significantly improved, which greatly improves the heat exchange efficiency.

Claims

1. A heater structure, characterized in that: The invention comprises a water pipe (1), wherein an electric heating pipe (2) is arranged outside the water pipe (1), wherein the electric heating pipe (2) is connected to the water pipe (1) in surface contact, and wherein the electric heating pipe (2) is spirally wound around the outer edge of the water pipe (1); the electric heating pipe (2) adopts a single-end outlet form and is connected to an external line.

2. A heater structure according to claim 1, characterized in that: The electric heating pipe (2) comprises a shell (2-1) and a plurality of heating wires (2-3) arranged inside the shell (2-1), and an insulating filler (2-2) is filled between the heating wires (2-3) and the shell (2-1).

3. A heater structure according to claim 2, characterized in that: The heating wires (2-3) at one end of the electric heating tube (2) are connected to each other, and the heating wire (2-3) at the other end of the electric heating tube (2) is connected to an external circuit.

4. A heater structure according to claim 2, characterized in that: The shell (2-1) of the electric heating pipe (2) comprises at least one contact plane, and the contact plane is welded to the outer edge surface of the water pipe (1).

5. A heater structure according to claim 1, characterized in that: The electric heating tube (2) is a flat tube structure, comprising two sections of symmetrical contact surfaces and two sections of symmetrical curved surfaces, wherein the contact surfaces and the curved surfaces are connected in sequence.

6. A heater structure according to claim 3, characterized in that: The distances between the plurality of heating wires (2-3) and the outer edge surface of the water pipe (1) are all equal.

7. A heater structure according to claim 2, characterized in that: The shell (2-1) is specifically a stainless steel shell.

8. A heater structure according to any one of claims 1 to 7, characterized in that: The pitches of adjacent electric heating tubes (2) are equal.

9. A heater structure according to any one of claims 1 to 7, characterized in that: Both ends of the water pipe (1) are provided with joints, the joints comprising a water inlet joint and a water outlet joint, and the water pipe (1) is connected to the joints by brazing.

Images