JP4611875B2 - Air conditioner outdoor unit - Google Patents

Description

  The present invention relates to a thermistor mounting structure for detecting the temperature of the outside air sucked into an outdoor unit of an air conditioner, particularly an outdoor unit heat exchanger.

  Conventionally, an outdoor unit of an air conditioner having a function of detecting an outside air temperature is known. For example, a thermistor is attached to the lower surface of a holder having a locking portion that can be engaged with the peripheral portion of the heat exchanger of the outdoor unit so as to be parallel to the flow of the air sucked into the heat exchanger, and a thin self- The thermistor is protected by a cover with a vent hole that is integrated with the holder so that it can be rotated by a hinge, and the lead wire of the thermistor is inserted into the upper surface of the holder from the through hole made in the holder and then pulled out to the outside. There are some (see, for example, Patent Document 1).

  In addition, a holder made of a heat insulating plate to which the thermistor is attached and a cover with a vent hole that protects the thermistor are configured separately, so that the holder (heat insulating plate) is disposed between the heat exchanger and the thermistor. By attaching the holder and cover to the U-shaped tube part of the heat transfer tube of the heat exchanger of the outdoor unit with a pair of U-shaped tube sandwiching pieces and screws for fastening them, the influence of radiant heat of the heat exchanger on the thermistor is reduced. There is what can be made (for example, see Patent Document 2).

JP 2003-185187 (FIG. 2) JP-A-11-148697 (FIG. 1)

  However, if the thermistor is attached to the lower surface of the holder so that it is parallel to the wind flow, and the lead wire of the thermistor is inserted into the upper surface of the holder from the through hole made in the holder, the thermistor Since the flow of air to the air is obstructed, the thermistor's outside air temperature detection accuracy is not only difficult, but the thermistor cannot be attached or removed unless the holder is removed from the heat exchanger due to the wiring. There was a problem that work efficiency when replacing the thermistor was poor.

  In addition, the holder (heat insulating plate) for attaching the thermistor and the cover for protecting the thermistor are configured separately, and the holder and the cover are arranged so that the holder (heat insulating plate) is interposed between the heat exchanger and the thermistor. Even if the unit is screwed to the heat exchanger of the outdoor unit, the flow of wind to the thermistor is obstructed by the holder (heat insulating plate), so the thermistor's outside air temperature detection accuracy is low. Furthermore, since the holder and the cover are separate and are configured to be screwed to each other, the thermistor cannot be attached or removed unless the holder and the cover are separated and removed from the heat exchanger. There was a problem that work efficiency at the time of replacement was poor.

  The technical problem of the present invention is to improve the accuracy of detecting the outside temperature of the thermistor, and to attach and remove the thermistor without removing the holder from the heat exchanger.

An outdoor unit of an air conditioner according to the present invention fixes a thermistor that detects the temperature of outside air sucked into a heat exchanger of an outdoor unit, a hook portion that can engage with a peripheral portion of the heat exchanger, and the thermistor. And a longitudinally slit-like and laterally-slit-like air vent formed in a plurality of locations including between the pedestals, and by engaging the hook with the peripheral edge of the heat exchanger, Located on the outside air suction side, by fixing the thermistor to the pedestal, a holder main body that is arranged in a direction intersecting the flow of outside air that is sucked into the heat exchanger through the vent hole, and provided at a plurality of locations A thermistor holder comprising: a cover having a horizontally long slit-like air hole, and a cover that is coupled to the holder main body so as to be rotatable to the outside of the heat exchanger and protects the front surface of the thermistor. .

According to the outdoor unit of the air conditioner of the present invention, the thermistor that detects the temperature of the outside air sucked into the heat exchanger of the outdoor unit, the hook portion that can be engaged with the peripheral portion of the heat exchanger, and the thermistor are fixed. And a longitudinally slit-like and laterally-slit-like air vent formed at a plurality of locations including between the pedestals, and by engaging the hook portion with the peripheral portion of the heat exchanger, the heat exchanger The holder body is arranged at a plurality of locations, and is disposed on the outside air suction side, and the thermistor is fixed to the pedestal so that the thermistor is arranged in a direction intersecting the flow of the outside air sucked into the heat exchanger through the vent hole. And a thermistor holder comprising a cover that has a horizontally elongated slit-shaped vent and is coupled to the holder main body so as to be rotatable to the outside of the heat exchanger and protects the front surface of the thermistor. cover Wind entering through the ventilation holes, passes through the vent holes of the holder body in a straight shape is sucked into the heat exchanger. For this reason, the quantity of the wind which contacts a thermistor increases and it can improve the external temperature detection precision of a thermistor. Furthermore, by rotating the cover to the outside and opening the front surface of the holder body, the thermistor can be attached and detached without removing the holder from the heat exchanger, so that work efficiency can be improved.

Hereinafter, the present invention will be described based on illustrated embodiments.
FIG. 1 is a rear perspective view showing an outdoor unit of an air conditioner according to an embodiment of the present invention, FIG. 2 is an enlarged perspective view showing a half-opened holder of the thermistor, and FIG. 3 is its heat exchanger and thermistor. FIG. 4 is a sectional view showing the relationship between the heat exchanger, the thermistor holder, and the top panel of the outdoor unit, and FIG. 5 is the thermistor holder, the thermistor and the thermistor lead wires and FIG. 6 is a front view showing the thermistor holder in a fully opened state, and FIG. 7 is a front view showing the relationship between the thermistor holder and the heat exchanger side plate. It is a front view shown in the closed state.

  In the outdoor unit of the air conditioner of the present embodiment, a thermistor holder 2 is attached to the upper left of the back surface of the heat exchanger 1. The holder 2 is attached to the lower end of the holder body 4 by a hinge 5 so as to be pivotable forward (outside of the heat exchanger) by a hinge 5 with a holder body 4 having a base 12 for fixing the thermistor 3. 3 and a cover 6 that protects the front surface of 3.

  More specifically, the holder body 4 is formed with a U-shaped hooking portion 7 extending on the upper portion thereof, and the hooking portion 7 is a peripheral edge portion (here, the upper edge portion) of the heat exchanger 1. The holder 2 can be installed on the outside air suction side of the heat exchanger 1 by hooking the hook portion 7 on the upper edge of the heat exchanger 1. Further, the holder body 4 is formed with longitudinally slit-like and horizontally-slit-like vent holes 13 at a plurality of locations including between the pedestals 12 on the back side of the thermistor 3, and the thermistor 3 attached to the pedestal 12 is It arrange | positions in the direction which cross | intersects with respect to the flow of the external air suck | inhaled by the heat exchanger 1 through the vent hole 13. As shown in FIG. Also, the cover 6 is provided with a horizontally-slit-like vent hole 14 at a plurality of locations, and the wind that has entered from the vent hole 14 of the cover 6 passes through the vent hole 13 of the holder body 4 in a straight shape and is heated. It is sucked into the exchanger 1. For this reason, the quantity of the wind which contacts the thermistor 3 increases and the external temperature detection accuracy of the thermistor improves. Further, when the thermistor 3 is replaced, the thermistor 3 can be attached and removed without removing the holder 2 from the heat exchanger 1 simply by rotating the cover 6 outward to open the front surface of the holder body 4. Work efficiency can be improved.

  By the way, if the thermistor 3 is mishandled, it causes a failure. Therefore, it is necessary to avoid being easily touched by the hand of the user of the air conditioner. Therefore, in the present embodiment, as shown in FIG. 4, the holder 2 is disposed so as to cover the top panel 8 of the outdoor unit, and the projection 6 is provided at the free end of the cover 6, and the cover 6 is closed. The protrusion 9 is arranged to be engageable with the inside of the peripheral edge portion 8a of the top panel 8 of the outdoor unit and is concealed. As a result, the user does not know that the thermistor 3 is installed there, and even if it is recognized that something is installed there, the cover 6 is attached to the peripheral portion 8a of the top panel 8. Therefore, it cannot be opened and can be prevented from being tampered with.

  Further, as shown in FIGS. 2 and 5, a lead-out portion 20 from the holder 2 of the protective tube 11 of the lead wire 10 of the thermistor 3 is formed at the joint of the holder main body 4 and the cover 6. Thus, the protective tube 11 can be held. This eliminates the need for a separate positioning member that requires, for example, a screw or the like for positioning of the protective tube 11, thereby reducing the number of parts and improving assembly workability. be able to.

  2, 6 and 7, the holder body 4 is integrally formed with a positioning portion 17 which extends laterally and whose tip is folded back in a U-shape on the holder body 4. 17 is engaged with the claw 16 of the side plate 15 of the heat exchanger 1 to position the holder body 4 in the left-right direction. Thereby, the adjustment of the mounting position in the left-right direction of the holder 2 becomes easy, and the mounting work of the holder 2 to the heat exchanger 1 becomes easy.

It is a back perspective view showing the outdoor unit of the air harmony machine concerning one embodiment of the present invention. It is an expansion perspective view shown in the state where the holder of the thermistor of the outdoor unit of the air harmony machine concerning one embodiment of the present invention was opened halfway. It is a side view which shows the relationship between the heat exchanger of the outdoor unit of the air conditioner which concerns on one Embodiment of this invention, and the holder of a thermistor. It is sectional drawing which shows the relationship between the heat exchanger of the outdoor unit of the air conditioner which concerns on one Embodiment of this invention, the holder of a thermistor, and the top panel of an outdoor unit. It is sectional drawing which shows the relationship between the holder of the thermistor of the outdoor unit of the air conditioner which concerns on one Embodiment of this invention, the thermistor, the lead wire of the thermistor, and the lead wire protection tube. It is a front view shown in the state where the holder of the thermistor of the outdoor unit of the air harmony machine concerning one embodiment of the present invention was opened completely. It is a front view which shows the relationship between the holder of the thermistor of the outdoor unit of the air conditioner which concerns on one Embodiment of this invention, and the side plate of a heat exchanger in the state which closed the holder.

Explanation of symbols

1 Heat exchanger of outdoor unit, 2 holder, 3 thermistor, 4 holder body, 5 hinge, 6 cover, 7 hooking part, 8a top panel peripheral part, 9 protrusion, 10 lead wire, 11 protective tube, 12 base, 13 , 14 Ventilation hole, 17 Positioning part, 20 Drawer part.

Claims (4)

A thermistor for detecting the temperature of the outside air sucked into the heat exchanger of the outdoor unit;
A hook portion engageable with a peripheral edge portion of the heat exchanger, a base for fixing the thermistor, and a vertically long slit-like and a horizontally long slit-like vent hole formed at a plurality of locations including between the bases. The engagement portion is engaged with the peripheral portion of the heat exchanger so that it is disposed on the outside air suction side of the heat exchanger, and the thermistor is attached to the base by fixing the thermistor to the pedestal. It has a holder body that is arranged in a direction that intersects with the flow of outside air that is sucked into the heat exchanger, and a horizontally long slit-shaped vent hole that can be rotated to the outside of the heat exchanger. A thermistor holder comprising: a cover coupled to the holder body to protect the front surface of the thermistor;
An air conditioner outdoor unit characterized by comprising:   The holder of the thermistor is provided at the free end of the cover while the cover is hinged to the lower edge of the holder body and is pivotable in the vertical direction. The outdoor unit of an air conditioner according to claim 1, further comprising a protrusion that can be engaged inside a peripheral portion of a top panel of the machine.   The thermistor holder is formed at a joint between the holder body and the cover, and includes a lead-out portion for pulling out a protection tube for the lead wire of the thermistor, and the protection tube is held by the holder main body and the cover of the lead-out portion. The outdoor unit for an air conditioner according to claim 1 or 2, wherein the outdoor unit is an air conditioner.   The holder of the thermistor is provided integrally with the holder body, and includes a positioning portion that engages with a side plate of the heat exchanger to position the holder body in the left-right direction. The outdoor unit of the air conditioner according to any one of claims 1 to 3.

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