KR20210039092A - Sensor holder for heat exchanger - Google Patents

Abstract

The present invention relates to a sensor holder for a heat exchanger, which allows a temperature sensor to be detachably fastened to a pipe of a heat exchanger. The sensor holder for the heat exchanger comprises: a body portion elastically fastened to a return band curved in a U shape in the pipe of the heat exchanger; and a sensor fastening portion formed on the body portion and fastening the temperature sensor to the return band so that the temperature sensor is in close contact therewith, wherein the body portion is tightly fastened to the outer and inner circumferential surfaces of the return band, thereby limiting rotation and linear movement. With this configuration, the temperature sensor can be removably and elastically fastened to the pipe of the heat exchanger, thereby omitting a separate welding process to improve work efficiency. Moreover, the sensor holder is closely coupled to the outer and inner circumferential surfaces of the return band to prevent rotation and linear movement in the return band.

Description

Sensor holder for heat exchanger {SENSOR HOLDER FOR HEAT EXCHANGER}

The present invention relates to a sensor holder for a heat exchanger, and more particularly, to a sensor holder for a heat exchanger capable of attaching and detaching a temperature sensor to a pipe of a heat exchanger.

In general, an air conditioner has a compressor and an outdoor heat exchanger, an expansion valve and an indoor heat exchanger, and a plurality of refrigerant pipes connecting the devices to form a closed circuit to form a refrigeration cycle, and the refrigerant circulating in the closed circuit is indoors. And a device that cools or heats the surroundings by using an endothermic action and an exothermic action performed when vaporized or liquefied in an outdoor heat exchanger.

Since the air conditioner controls the devices that make up the refrigeration cycle so that the indoor space is maintained at a set temperature by sensing the indoor temperature and the temperature of the refrigerant flowing in the indoor and outdoor heat exchangers, a temperature sensor for sensing the temperature of the refrigerant in the refrigerant pipe Is installed.

An example of a conventional temperature sensor fixing device for installing such a temperature sensor in a refrigerant pipe is disclosed in Korean Patent Application Publication No. 2008-0006413. In the conventional temperature sensor fixing device, the sensor holder is welded to the refrigerant pipe.

However, if the sensor holder is fastened to the refrigerant pipe by welding, there is a risk that the refrigerant pipe or the sensor holder may be thermally deformed or damaged by welding. In addition, since the sensor holder must be manually welded to the refrigerant pipe, there is a problem that a lot of work time is required.

The present invention was invented to solve the above problems, and an object of the present invention is to provide a sensor holder for a heat exchanger capable of attaching and detaching a temperature sensor to a pipe of a heat exchanger.

In order to achieve the above object, a sensor holder for a heat exchanger according to a preferred embodiment of the present invention includes: a body part elastically fastened to a return band curved in a U shape in a pipe of the heat exchanger; And a sensor fastening part formed on the body part and fastening the temperature sensor to the return band, wherein the body part is tightly fastened to the outer circumferential surface and the inner circumferential surface of the return band, thereby restricting rotation and linear movement.

More specifically, the body portion, a first contact surface in close contact with one surface of the return band, the fixing portion protruding in close contact with the inner circumferential surface of the return band; A bent surface extending from the first contact surface and being in close contact with the outer circumferential surface of the return band; And a second contact surface extending from the bent surface and in close contact with the other surface of the return band, and in which the sensor fastening part is formed.

Here, the second contact surface may be provided to be closely supported by the return band in an area other than the area in which the sensor fastening part is formed.

In addition, the fixing part may include at least two inner protrusions that are provided with a plurality of protrusions and protrude to be in close contact with the return band, and are formed in the same direction as the direction in which the temperature sensor is disposed, and are respectively in close contact with the inner peripheral surface of the return band .

Alternatively, the fixing part may further include at least two outer protrusions formed between the inner protrusion and the bent surface to be in close contact with the outer circumferential surface of the return band.

In another embodiment, the fixing part is formed to protrude to the inside of the return band in a state where both sides are cut so as to be elastically deformed to press the return band in close contact with the bent surface, and both sides contact the inner circumferential surface of the return band to limit movement. It may be arranged to do.

In another embodiment, the fixing part may be provided in a curved shape so as to have an arc corresponding to a radius of curvature of the return band, and may be provided in surface contact with the inner circumferential surface of the return band to limit movement.

In addition, the sensor fastening portion, a sensor insertion portion formed by bending an area of the body portion to the outside, a temperature sensor is inserted from one side; And a sensor pressing unit protruding inwardly from the sensor insertion unit and elastically pressing the temperature sensor so as to be in close contact with the return band.

Here, the sensor insertion part may be formed to be bent in an arc shape having an angle of 180 degrees or more and 300 degrees or less so as to surround the outer peripheral surface of the temperature sensor.

Further, the sensor fastening part may further include a sensor stopper protruding from the other side of the sensor insertion part to the inside and supporting the end of the temperature sensor to limit the movement of the temperature sensor.

According to the sensor holder for a heat exchanger according to the present invention, since it can be elastically fastened to the pipe of the heat exchanger in a detachable manner, a separate welding process can be omitted, thereby improving work efficiency.

In addition, according to the present invention, it is possible to obtain an effect of preventing the sensor holder for the heat exchanger from rotating and linearly moving in the pipe of the heat exchanger by being closely coupled to the outer circumferential surface and the inner circumferential surface of the return band curved in a U shape in the pipe of the heat exchanger. I can.

1 is a perspective view schematically showing a state in which a sensor holder for a heat exchanger according to an embodiment of the present invention is fastened to a return band of a heat exchanger;
2 is a perspective view schematically showing a state in which a temperature sensor is installed in a state in which a sensor holder for a heat exchanger according to an embodiment of the present invention is fastened to a return band of a heat exchanger;
3 is a perspective view schematically showing a sensor holder for a heat exchanger according to an embodiment of the present invention,
4 is a perspective view schematically showing a state in which a fixing part is fastened to a return band of a heat exchanger in a sensor holder for a heat exchanger according to an embodiment of the present invention;
5 is a perspective view schematically showing a state in which a fixing part according to another embodiment of a sensor holder for a heat exchanger according to an embodiment of the present invention is fastened to a return band of a heat exchanger;
6 is a front view schematically showing a state in which a temperature sensor is closely coupled to a return band by a sensor holder for a heat exchanger according to an embodiment of the present invention;
7 is a perspective view schematically showing a state in which a sensor stopper is provided in a sensor holder for a heat exchanger according to an embodiment of the present invention;
8 is a perspective view schematically showing a sensor pressing unit according to another embodiment in the sensor holder for a heat exchanger according to an embodiment of the present invention;
9 is a perspective view schematically showing a sensor holder for a heat exchanger according to another embodiment of the present invention;
10 is a perspective view schematically showing a sensor holder for a heat exchanger according to another embodiment of the present invention.

In order to help understand the features of the present invention, the following will be described in more detail with respect to the sensor holder for a heat exchanger related to an embodiment of the present invention.

In adding reference numerals to the components of the accompanying drawings to aid in understanding the embodiments described below, it should be noted that the same components are to have the same reference numerals as much as possible, even if they are indicated on different drawings. . In addition, in describing the present invention, when it is determined that a detailed description of a related known configuration or function may obscure the subject matter of the present invention, a detailed description thereof will be omitted.

Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings.

1 and 2 are perspective views schematically showing a state in which a sensor holder for a heat exchanger according to an embodiment of the present invention is fastened to a return band of a heat exchanger, and schematically shows a state in which a temperature sensor is installed in the sensor holder for a heat exchanger. This is a perspective view.

And, Figure 3 is a perspective view schematically showing the sensor holder for the heat exchanger, Figure 4 is a perspective view schematically showing a state in which the fixing part is fastened to the return band of the heat exchanger in the sensor holder for the heat exchanger, Figure 5 Is a perspective view schematically showing a state in which a fixing part according to another embodiment is fastened to a return band of a heat exchanger.

In addition, FIG. 6 is a front view schematically showing a state in which a temperature sensor is tightly coupled to a return band by the heat exchanger sensor holder, and FIG. 7 schematically shows a state in which a sensor stopper is provided in the sensor holder for the heat exchanger. Perspective view,

Further, FIG. 8 is a perspective view schematically showing a sensor pressing unit according to another embodiment in the sensor holder for a heat exchanger according to an embodiment of the present invention.

1 to 8, the sensor holder 110 for a heat exchanger according to an embodiment of the present invention is a body that is elastically fastened to the return band 30 curved in a U shape in the pipe 20 of the heat exchanger 10 It includes a part 200 and a sensor fastening part 300 formed on the body part 200 and fastening the temperature sensor 40 to the return band 30 in close contact.

Here, the body part 200 is tightly coupled to the outer circumferential surface 32 and the inner circumferential surface 31 of the return band 30 to restrict rotation and linear movement.

That is, in the sensor holder 110 for a heat exchanger of the present invention, the body part 200 can be elastically fastened to the return band 30 so that it can be detached in a one-touch manner without a separate welding process, and the body part 200 is It is closely connected to the outer circumferential surface 32 and the inner circumferential surface 31 of the return band 30 curved in a U-shape to prevent rotation based on the pipe or shaking left and right while the temperature sensor 40 is connected, thereby preventing the sensor holder. It is possible to prevent the temperature sensor 40 from being separated from or defective contact.

More specifically, the body portion 200 is in close contact with one surface of the return band 30 and the first contact surface 210 in which the fixing part 240 protrudes in close contact with the inner circumferential surface 31 of the return band 30 , The bending surface 220 extending from the first contact surface 210 and being in close contact with the outer circumferential surface 32 of the return band 30, and extending from the bent surface 220 to the other surface of the return band 30 It includes a second contact surface 230 in close contact and the sensor fastening part 300 is formed. Here, the body part 200 is formed of an elastic material and elastically deformed so that the first and second contact surfaces 210 and 230 face each other based on the bent surface 220. .

That is, the body portion 200 is provided in the shape of a U and the first contact surface 210 and the second contact surface 230 facing each other, so that the first contact surface 210 and the second contact surface ( 230) When the return band 30 is inserted, the outer circumferential surface 32 of the return band 30 is in close contact with the inner side of the bent surface 220, and is formed protruding from the first contact surface 210. The top portion 240 is in close contact with the inner circumferential surface 31 of the return band 30, so that the body portion 200 is elastically fastened and fixed to the return band 30.

Here, the fixing part 240 is provided with a plurality of protrusions, is formed to protrude in close contact with the return band 30, and is formed in the same direction as the direction in which the temperature sensor 40 is disposed, so that the inner circumferential surface 31 of the return band 30 ) Includes at least two inner protrusions each in close contact with each other.

That is, the fixing part 240, as shown in FIG. 4, is provided with three inner protrusions (,), one on the central side of the bend of the return band 30 in the inner peripheral surface 31 of the return band 30 The first inner protrusions 241 of are in close contact, and two second inner protrusions 242 are provided in close contact with both sides of the first inner protrusion 241. In this case, it is possible to limit the movement of the body part 200 in the left and right direction based on the drawing by the first inner protrusion 241, and the body part by the two second inner protrusions 242 It is possible to limit the movement of 200 in the front-rear direction based on the drawing or rotation on the return band 30.

Alternatively, referring to FIG. 5, the fixing part 250 according to another embodiment includes two inner protrusions 251 in close contact with the inner circumferential surface 31 of the return band 30, and the inner protrusion 251 and the It may be provided with two outer protrusions 252 formed between the bent surfaces 220 and in close contact with the outer circumferential surface 32 of the return band 30. That is, the two inner protrusions 251 and the two outer protrusions 252 are arranged in close contact with the front and rear and left and right sides of the return band 30 so that the body portion 200 is moved back and forth and left and right, or the return band ( 30) You can limit the rotation of the phase.

Accordingly, the fixing part may prevent the body part 200 from moving or rotating in the return band 30 through a combination of a plurality of inner protrusions or a plurality of outer protrusions and an inner protrusion as needed.

The second contact surface 230 extends from the bent surface 220 so as to face the first contact surface 210 and is in close contact with the other surface of the return band 30, and the temperature sensor 40 is attached to the return band 30. A sensor fastening part 300 is formed that is closely fastened to the other surface of ).

That is, the sensor fastening part 300 is provided integrally with the second contact surface 230, and the second contact surface 230 is formed by bending the second contact surface 230 to protrude outward from the second contact surface 230. .

In this case, the sensor fastening part 300 is formed in the longitudinal direction from the second contact surface 230, and is formed at the center side of the second contact surface 230. That is, referring to FIG. 4, the left side (L) and the right side (R) of the sensor fastening part 300 are in close contact with the return band 30 on the second contact surface 230. Through this, since the sensor fastening part 300 is closely supported by the return band 30 in an area other than the area where the sensor fastening part 300 is formed, the fastening force of the body part 200 fastened to the return band 30 may be improved.

In addition, the sensor fastening part 300 is formed by bending an area of the body part 200 outward, and a sensor insertion part 310 into which a temperature sensor 40 is inserted from one side thereof, and the sensor insertion part 310 ) Is formed to protrude inwardly and includes a sensor pressing unit 320 that elastically presses the temperature sensor 40 to be in close contact with the return band 30.

That is, the sensor insertion part 310 is formed to surround the outer circumferential surface of the temperature sensor 40 to be inserted, and the sensor pressing part 320 is elastically bent inside the sensor insertion part 310. Therefore, as shown in Figs. 1 and 2, after the body part 200 is fastened to the return band 30, when the temperature sensor 40 is inserted into the sensor insertion part 310, the sensor pressing part The temperature sensor 40 is tightly coupled to the outer circumferential surface of the return band 30 by the elastic force of 320. Therefore, since the temperature sensor 40 is stably tightly coupled to the return band 30, a more real temperature measurement is possible.

Here, the sensor insertion part 310 may be formed to be bent in an arc shape having an angle of 180 degrees or more and 300 degrees or less so as to surround the outer circumferential surface of the temperature sensor 40.

For example, when the sensor insertion part 310 is formed in an arc shape having an angle of less than 180 degrees, the left side of the sensor fastening part 300 ( L) is not in close contact with the return band 30, but is spaced apart, so that the fastening force of the body part 200 decreases, and there may be a problem that the temperature sensor 40 is separated from the sensor insertion part 310.

In addition, when the sensor insertion part 310 is formed in an arc shape exceeding a 300 degree angle, the left surface L of the sensor fastening part 300 and the second contact surface 230 with reference to FIG. 4 Since the area of the temperature sensor 40 protruding between the right side R also decreases, a contact failure between the return band 30 and the temperature sensor 40 may occur.

Therefore, it is preferable that the sensor insertion part 310 is bent in an arc shape having an angle of 180 degrees or more and 300 degrees or less.

In addition, the body portion 200, as shown in FIG. 6, is provided to have a width equal to or greater than or equal to the width of the return band 30 so as to accommodate all of the return band 30 inside.

The area supported by the return band 30 in the body part 200 is maximized, so that the body part 200 can be more stably fastened to the return band 30, and the temperature sensor in the return band 30 (40) can be tightly fastened more stably.

Further, as the contact area between the body part 200 and the return band 30 is maximized, temperature transfer from the return band 30 to the body part 200 is facilitated, so that the body part 200 and the return band 30 ), the temperature deviation decreases. Accordingly, an error in temperature measurement of the temperature sensor 40 may be minimized.

Further, the sensor fastening part 300 is formed protruding from the other side of the sensor insertion part 310 inward, and a sensor stopper 330 that supports the end of the temperature sensor 40 to limit the movement of the temperature sensor 40. ) Is further provided.

That is, referring to FIG. 7, when the temperature sensor 40 is inserted from one side of the sensor fastening part 300 to the other side (in the direction of the arrow), if the sensor stopper 330 is not provided, the sensor fastening The temperature sensor 40 may protrude to the other side of the part 300. In this case, if the wire connected to the temperature sensor 40 is provided with an optimized length at the installation location, a problem of a short circuit in the temperature sensor 40 may occur.

Accordingly, the optimum installation position of the temperature sensor 40 in the sensor fastening part 300 is limited through the sensor stopper 330, and a short circuit of the wire in the temperature sensor 40 can be prevented.

Of course, the shape of the sensor stopper 330 is not limited thereto, and the temperature sensor 40 inserted into one side of the sensor fastening part 300 is moved so that it does not protrude to the other side of the sensor fastening part 300. If it can be restrained, it can be provided in any form.

Further, the sensor pressing unit 320, referring to FIG. 7, is cut at both sides in the longitudinal direction in which the temperature sensor 40 is disposed in the sensor fastening section 300 to the inside of the sensor fastening section 300. It is formed to protrude.

Alternatively, referring to FIG. 8, the sensor pressurization unit 340 according to another embodiment is recessed in the form of a dimple having a predetermined length in the longitudinal direction in which the temperature sensor 40 is disposed in the sensor fastening unit 300 to provide a temperature sensor. It may be formed to protrude toward the (40) side.

That is, the sensor pressing unit of the present invention may be provided in any form as long as the temperature sensor 40 inserted into the sensor fastening unit 300 can be elastically pressed in close contact with the return band 30.

9 is a perspective view schematically showing a sensor holder for a heat exchanger according to another embodiment of the present invention.

The sensor holder 120 for a heat exchanger according to another embodiment of the present invention differs only from the sensor holder 110 for a heat exchanger and the fixing part 260 according to the embodiment of the present invention described above with reference to FIGS. 1 to 8 Is provided, and all other configurations are provided identically.

More specifically, the fixing part 260 is formed to protrude to the inside of the return band 30 in a state in which both side surfaces thereof are cut to be elastically deformed in the first contact surface 210. At this time, the fixing part 260 is intimately fixed to the bent surface 220 by pressing the return band 30 with a curved surface protruding to the inside of the return band 30. In addition, both side surfaces 261 of the fixing part 260 contact both sides of the inner circumferential surface 31 of the return band 30 to limit the movement or rotation of the body part 200 left and right.

With this configuration, the sensor holder 120 for the heat exchanger can be elastically fastened to the return band 30, so that it can be detached in a one-touch manner without a separate welding process, and rotated and moved while being fastened to the return band 30. Can be limited.

10 is a perspective view schematically showing a sensor holder for a heat exchanger according to another embodiment of the present invention.

In the sensor holder 130 for a heat exchanger according to another embodiment of the present invention, only the sensor holder 110 and the fixing part 270 for a heat exchanger according to the embodiment of the present invention described above with reference to FIGS. 1 to 8 are different. It is provided in a form, and all other configurations are provided the same.

More specifically, the fixing part 270 is provided in a curved shape to have an arc corresponding to the radius of curvature of the return band 30 and is provided to limit movement by making surface contact with the inner circumferential surface 31 of the return band 30. I can.

That is, the fixing part 270 is formed to protrude toward the inner circumferential surface 31 of the return band 30 by being recessed in the form of a dimple having an arc of a predetermined length in the first contact surface 210 to press the return band 30 Thus, it is tightly fixed to the bent surface 220. Further, both sides of the arc of the fixing part 270 contact both sides of the inner circumferential surface 31 of the return band 30 to limit the movement or rotation of the body part 200 left and right.

With this configuration, the sensor holder 130 for the heat exchanger can be elastically fastened to the return band 30, so that it can be detached in a one-touch manner without a separate welding process, and rotated and moved while being fastened to the return band 30. Can be limited.

As described above, although the present invention has been described by the limited embodiments and drawings, the present invention is not limited thereto, and the technical idea of the present invention and the following by those of ordinary skill in the art to which the present invention pertains. It goes without saying that various modifications and variations are possible within the equivalent range of the claims to be described.

10: heat exchanger
20: piping
30: return band
40: temperature sensor
110, 120, 130: sensor holder for heat exchanger
200: body part
210: first contact surface
220: bending surface
230: second contact surface
240, 250, 260, 270: fixed part
300: sensor connection part
310: sensor insertion part
320, 340: sensor pressurization part
330: sensor stopper

Claims (10)

A body part elastically fastened to the return band curved in a U shape in the pipe of the heat exchanger; And
Includes; a sensor fastening part formed on the body part and fastening the temperature sensor to the return band,
The body part,
A sensor holder for a heat exchanger, characterized in that rotation and linear movement are restricted by being closely coupled to the outer circumferential surface and the inner circumferential surface of the return band.
The method of claim 1,
The body part,
A first contact surface in close contact with one surface of the return band and a fixing portion protruding in close contact with the inner circumferential surface of the return band;
A bent surface extending from the first contact surface and being in close contact with the outer circumferential surface of the return band; And
A second contact surface extending from the bent surface and in close contact with the other surface of the return band, and wherein the sensor fastening part is formed;
A sensor holder for a heat exchanger comprising a.
The method of claim 2,
The second contact surface,
A sensor holder for a heat exchanger, characterized in that it is closely supported to the return band in an area other than the area in which the sensor fastening part is formed.
The method of claim 2,
The fixing part,
A sensor holder for a heat exchanger comprising at least two inner protrusions that are provided with a plurality of protrusions and protrude in close contact with the return band, are formed in the same direction as the direction in which the temperature sensor is arranged, and each in close contact with the inner circumferential surface of the return band. .
The method of claim 4,
The fixing part,
The sensor holder for a heat exchanger, further comprising at least two outer protrusions formed between the inner protrusion and the bent surface and in close contact with the outer circumferential surface of the return band.
The method of claim 2,
The fixing part,
A sensor holder for a heat exchanger, characterized in that it protrudes to the inside of the return band with both sides cut so as to be elastically deformed, presses the return band in close contact with the bent surface, and limits movement by contacting both sides of the return band with the inner circumferential surface of the return band. .
The method of claim 2,
The fixing part,
A sensor holder for a heat exchanger, characterized in that it is provided in a curved shape so as to have an arc corresponding to the radius of curvature of the return band and is in contact with the inner circumferential surface of the return band to limit movement.
The method of claim 1,
The sensor fastening part,
A sensor insertion portion formed by bending an area of the body portion outward, and into which a temperature sensor is inserted from one side thereof; And
A sensor pressing unit protruding inward from the sensor insertion unit and elastically pressing the temperature sensor so as to be in close contact with the return band;
A sensor holder for a heat exchanger comprising a.
The method of claim 8,
The sensor insertion unit,
A sensor holder for a heat exchanger, characterized in that it is bent in an arc shape having an angle of 180 degrees or more and 300 degrees or less so as to surround the outer peripheral surface of the temperature sensor.
The method of claim 8,
The sensor fastening part,
A sensor stopper protruding from the other side of the sensor insertion part to the inside and supporting an end of the temperature sensor to limit movement of the temperature sensor;
A sensor holder for a heat exchanger, characterized in that it further comprises.

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