JPH04109131A - Temperature sensor device for heat exchanger - Google Patents

Abstract

PURPOSE:To improve the heat transfer property between a temperature sensor and a holder by pinching the peripheral side section of the temperature sensor along its longitudinal direction with a plate spring member folded into a V-shaped cross section, and bringing it into elastic contact with the inner wall of the holder. CONSTITUTION:A plate spring member 4 is inserted into a holder 2, and hooking pieces 7 (for preventing the drop of the spring member 4), 8 are coupled with both ends of the holder 2. A temperature sensor 3 is inserted between the inner face of the holder 2 and the spring member 4 until its insertion tip is brought into contact with a hook section 9. The plate spring member 4 is spread so that its V-shaped cross section is slightly opened. The sensor 3 is pressed to the inner wall of the holder 2 by the closing force of the spring member 4 while its peripheral side section is pinched along the longitudinal direction by the spring member 4. The whole insertion portion of the sensor 3 is stably held by the spring member 4 in good contact with the inner face of the holder 2. The heat transfer property between the holder 2 and the temperature sensor 3 is improved, and the high-sensitivity temperature detection by the sensor 3 can be attained.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a temperature sensor device such as a heat exchanger, and particularly relates to a temperature sensor device such as a heat exchanger. This invention relates to improvements in leaf spring members.

(Prior Art) As a temperature sensor device installed in a heat exchanger of an air conditioner, a structure shown in FIGS. 5 and 6 is known.As shown in FIG. It is composed of a cylindrical holder b, a cylindrical temperature sensor C, and a leaf spring member d. e is a lead wire connected to the base end of sensor C.

As shown in FIGS. 7 and 8, the leaf spring member d has both ends thereof bent at right angles in opposite directions, thereby regulating the insertion amount of the temperature sensor C into the holder b at one end. A first locking piece f is formed at the other end, and a second locking piece g is formed at the other end for regulating the amount of insertion of the leaf spring member d into the holder b. In addition, as shown in FIG. 8, the leaf spring member d has a central portion in the longitudinal direction that is slightly folded back toward the bending side of the second locking piece g. It is configured to come into elastic contact with the inner surface of the

When installing the temperature sensor C into the holder b, the plate spring member d is inserted into the holder b from the first locking piece f side, and then the temperature sensor C is inserted. As a result, the distance between the inner surface of the holder b and the folded portion is expanded, and the elasticity of the leaf spring member d causes the temperature sensor C to come into elastic contact with the inner surface of the holder b and to be fixed therein.

(Problems to be Solved by the Invention) Incidentally, in order to achieve sensitive temperature control, it is necessary to improve the heat transfer between the temperature sensor C and the holder 5.

However, in the conventional device, the pressing of the temperature sensor C onto the holder b is achieved by contacting only one point of the folded portion of the leaf spring member d with the side surface of the sensor. Poor contact was likely to occur and there were problems with heat transfer.

The present invention was devised to solve the above problems, and its purpose is to provide a highly sensitive temperature sensor device that can achieve good heat transfer between a temperature sensor and a holder.

E Structure of the Invention (Means for Solving the Problem) In order to achieve the above object, the present invention provides a cylindrical holder formed to be directly attached to a heat exchanger, etc. of an air translator, and the holder. In a temperature sensor device such as a heat exchanger, the temperature sensor device is provided with a rod-shaped temperature sensor that is detachably inserted in contact with the inner wall of the heat exchanger and detects the temperature of the heat exchanger. The peripheral side of the temperature sensor that is inserted from the insertion direction of the sensor,
It is provided with a leaf spring member folded back to have a V-shaped cross section so as to be sandwiched along the longitudinal direction and come into elastic contact with the inner wall of the holder.

(Function) When attaching the temperature sensor to the holder, the leaf spring member is inserted into the holder, and then the temperature sensor is inserted between the inner surface of the holder and the leaf spring member. By inserting the temperature sensor, the leaf spring member is slightly expanded, and the temperature sensor's peripheral side is pressed against the inner wall of the holder which is sandwiched in the longitudinal direction by the leaf spring member. As a result, the temperature sensor is stably held while being in good contact with the holder, so that heat transfer between the holder and the temperature sensor is improved.

(Example) Next, one embodiment of the present invention will be described.

As shown in FIGS. 1 and 2, the temperature sensor device 1 includes a cylindrical holder 2, a cylindrical rod-shaped temperature sensor 3, and a leaf spring member 4. As shown in FIGS. The holder 2 and the temperature sensor 3 are constructed similarly to the conventional device.

As shown in FIGS. 3 and 4, the leaf spring member 4 is folded back to have a V-shaped cross section (angle θ) so as to sandwich the circumferential side of the temperature sensor 3 along its longitudinal direction, and the folded back Part 5
It is mainly composed of notches 6 formed along both ends and at the center.

This leaf spring member 4 is formed to have approximately the same length as the holder 2. By bending both ends of the leaf spring member 4 at right angles in the opposite direction to the folded side of the 7-shape, the leaf spring member 4 is prevented from falling off from the holder 2 toward the rainy side. A first locking piece 7 is formed on both sides of the other end, and a second locking piece 8 is formed on both sides of the other end for regulating the amount of insertion of the leaf spring member 4 into the holder 2. In order to restrict the amount of insertion of the temperature sensor 3, a locking portion 9 is provided near the insertion side tip of the leaf spring member 4 by bending both sides of the leaf spring member 4 so as to protrude toward the folded side of the figure 7 shape. is formed.

Next, when mounting the temperature sensor 3 to the holder 2, which will explain the operation of this embodiment, the leaf spring member 4 is first inserted into the holder 2 and mounted. When attaching the leaf spring member 4, the first and second locking pieces 7.8 are engaged with both ends of the holder 2. Next, the inner surface of the holder 2 and the leaf spring member 4
Meanwhile, the temperature sensor 3 is inserted until its insertion tip abuts against the locking part 9. By inserting the temperature sensor 3, the leaf spring member 4 is expanded so that its V-shaped cross section is slightly opened. The temperature sensor 3 has a leaf spring member 4 on its peripheral side.
The leaf spring member 4 is pressed against the inner wall of the holder by the force of closing the legs while being sandwiched in the longitudinal direction by the holders. The entire insertion portion of the temperature sensor 3 is stably held by the leaf spring member 4, and is held in good contact with the inner surface of the holder 2. As a result, the heat transfer between the holder 2 and the temperature sensor 3 is significantly improved, and highly sensitive temperature detection by the temperature sensor 3 can be achieved. As a result, it is possible to prevent the leaf spring member 4 from falling off the holder 2 even when the temperature sensor 3 is not attached, so that the leaf spring member 4 can be prevented from being lost.

[Effects of the Invention] In summary, according to the present invention, heat transfer between the temperature sensor and the holder can be achieved favorably, so that the excellent effect of achieving highly sensitive temperature detection by the temperature sensor can be exhibited.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention, FIG. 2 is a front view, FIG. 3 is a perspective view showing the leaf spring member of FIG. 1, FIG. 4 is a front view, and FIG. 6 is a front view of the conventional example, FIG. 7 is a plan view of the plate spring member of FIG. 5, and FIG. 8 is a side view of the same. In the figure, 1 is a temperature sensor device, 2 is a holder, 3 is a temperature sensor, and 4 is a leaf spring member.

Claims (1)

[Claims] 1. A cylindrical holder formed to be directly attached to a heat exchanger, etc. of an air conditioner, and a rod that is detachably inserted into the holder in contact with the inner wall of the holder to detect the temperature of the heat exchanger, etc. In a temperature sensor device such as a heat exchanger, the temperature sensor is inserted into the cylindrical holder from the insertion direction of the temperature sensor, and the circumferential side of the temperature sensor to be inserted is 1. A temperature sensor device for a heat exchanger, etc., comprising a leaf spring member that is folded back to have a V-shaped cross section so as to be held in elastic contact with the inner wall of the holder.