JP2013139933A - Refrigerator outdoor unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress strength deterioration of a housing associated with attachment of an external air temperature sensor to the housing of an outdoor unit.SOLUTION: A machine chamber side plate 24 of a unit casing 20 has a body part 24a and an end 24b formed by folding a side of the body part 24a. The end 24b of the machine chamber side plate 24 is disposed in the vicinity of a back surface side of an outdoor heat exchanger 13 for exchanging heat of external air sucked from the outside of the unit casing 20. A temperature sensor holder 40 has a claw part 42 for hooking to an opening of the body part 24a of the machine chamber side plate 24, and a hook 43 for hooking to a front end of the end 24b of the machine chamber side plate 24.

Description

  The present invention relates to an outdoor unit of a refrigeration apparatus.

  In a refrigeration apparatus using a heat exchanger, for example, as described in Patent Document 1 (Japanese Patent Laid-Open No. 2011-137598), a thermistor that detects the temperature of the outside air is generally attached in the vicinity of the heat exchanger. It is. A thermistor housing (temperature sensor holder) for holding a thermistor that detects the outside air temperature is often attached to the casing so that the temperature of the outside air can be detected.

  However, as in Patent Document 1, when the thermistor storage tool is attached to the casing by cutting out a part of the casing, the strength of the casing is reduced.

  The subject of this invention is suppressing the strength fall of a housing | casing accompanying attachment of the outside temperature sensor to the housing | casing of an outdoor unit.

  An outdoor unit of a refrigeration apparatus according to a first aspect of the present invention includes a housing having a side plate having a main body portion and an end portion where one side of the main body portion is bent, and an inner portion of the side plate. A heat exchanger that is arranged in the vicinity and exchanges heat of the outside air sucked in from the outside of the housing, an outside air temperature sensor for detecting the temperature of the outside air that is exchanged by the heat exchanger, and a main body of the side plate And a temperature sensor holding tool for holding an outside air temperature sensor. The temperature sensor holding tool has a first locking portion and a second locking portion for hooking on the tip of the end portion of the side plate.

  In the outdoor unit of the refrigeration apparatus according to the first aspect, since the second locking portion can be hooked on the tip of the end, it is not necessary to cut out the end in the middle, and the end can be extended over the entire side of the main body. Therefore, the cross section perpendicular to the direction in which the end portion extends can keep the L shape over the entire side of the main body.

  The outdoor unit of the refrigeration apparatus according to the second aspect of the present invention is the outdoor unit of the refrigeration apparatus according to the first aspect, wherein the side plate has an opening formed in the main body, and the temperature sensor holder is molded from resin. The first locking portion is a claw portion that fits into the opening integrally formed with the plate-like main body.

  In the outdoor unit of the refrigeration apparatus according to the second aspect, since the claw portion can be fitted to the side plate in a state where the second locking portion is hooked on the end portion of the side plate, the temperature sensor holder can be easily attached and detached. .

  The outdoor unit of the refrigeration apparatus according to the third aspect of the present invention is the outdoor unit of the refrigeration apparatus according to the second aspect, wherein the temperature sensor holder has an L-shaped cross section in which the second locking portion is integrally molded with the plate-like body. It is a hook of the mold.

  In the outdoor unit of the refrigeration apparatus according to the third aspect, since the cross-sectional shape of the second locking portion is L-shaped, it can be slid into the end, and after the claw is fitted to the side plate, Since the movement in the direction parallel to the side plate is regulated by the part, the temperature sensor holder will not fall out in the direction parallel to the main body part of the side plate, and the place of the plate-like main body opposite to the claw part will be Even if the hook is caught, the hook resists the force in the direction to remove the temperature sensor holder, and the temperature sensor holder is prevented from coming off.

  The outdoor unit of the refrigeration apparatus according to the fourth aspect of the present invention is the outdoor unit of the refrigeration apparatus according to the third aspect, in which the temperature sensor holder holds the hinge part and the temperature sensor for folding the plate-shaped main body in two. A recess is formed in the plate-like main body, and the plate-like main body is folded in two by fitting the claw portion into the opening of the side plate, and the recess is covered.

  In the outdoor unit of the refrigeration apparatus according to the fourth aspect, attachment in a state where the outdoor temperature sensor is held by the temperature sensor holder becomes easy.

  In the outdoor unit of the refrigeration apparatus according to the first aspect, the L-shaped cross section of one side of the main body can be continued without being cut off in the middle, thereby suppressing a reduction in the strength of the side plate due to the attachment of the outside air temperature sensor. As a result, the strength reduction of the housing can be suppressed.

  In the outdoor unit of the refrigeration apparatus according to the second aspect, the temperature sensor holder can be easily attached and detached, and manufacturing and maintenance can be easily performed.

  In the outdoor unit of the refrigeration apparatus according to the third aspect, since the temperature sensor holder is prevented from falling off, it is possible to provide a temperature sensor holder that can be easily attached and detached and can be sufficiently fixed.

  In the outdoor unit of the refrigeration apparatus according to the fourth aspect, since it is easy to attach and detach in a state where the outdoor temperature sensor is held by the temperature sensor holder, breakage when the outdoor temperature sensor is attached to or removed from the outdoor unit is reduced.

The circuit diagram for demonstrating the outline | summary of a structure of the air conditioning apparatus which concerns on one Embodiment. The rear view which shows the external appearance of an outdoor unit. The typical top view of the outdoor unit in the state where the top plate was removed. The rear view which shows the state which looked at the machine room side board from the back side of the outdoor unit. Sectional view taken along the line II of FIG. 4 of the machine room side plate. (A) The perspective view which shows the external appearance of an external temperature sensor, (b) Typical sectional drawing which shows the outline | summary of a structure of an external temperature sensor. The top view which shows the structure of a temperature sensor holder. The front view which shows the structure of a temperature sensor holder. The side view which shows the structure of a temperature sensor holder. II-II sectional view taken on the line of FIG. 8 of a temperature sensor holder. The partial expansion perspective view which shows the state in which the temperature sensor holder is attached to the machine room side plate. The partial enlarged plan view which shows the internal structure of an outdoor unit when an outdoor unit is seen from the top except a top plate. The rear view which shows the state which looked at the conventional machine room side board from the back side of the outdoor unit.

(1) Overall Configuration of Air Conditioner As a refrigeration apparatus according to one embodiment of the present invention, a refrigeration apparatus used in an air conditioner will be described. FIG. 1 is a circuit diagram showing an outline of an air conditioner. The air conditioner 1 includes an outdoor unit 2 and an indoor unit 3. This air conditioner 1 is an apparatus used for air conditioning of each room in a building by performing a vapor compression refrigeration cycle operation. The air conditioner 1 includes an outdoor unit 2 as a heat source unit, an indoor unit 3 as a utilization unit, and refrigerant communication tubes 6 and 7 that connect the outdoor unit 2 and the indoor unit 3.

  The refrigeration apparatus configured by connecting the outdoor unit 2, the indoor unit 3, and the refrigerant communication pipes 6 and 7 includes a compressor 11, a four-way switching valve 12, an outdoor heat exchanger 13, an expansion valve 14, and an indoor heat exchanger. 4 and the accumulator 15 are connected by a refrigerant pipe. A refrigerant is sealed in the refrigeration apparatus, and a refrigeration cycle operation is performed in which the refrigerant is compressed, cooled, decompressed, heated and evaporated, and then compressed again. During operation, the liquid refrigerant side closing valve 17 and the gas refrigerant side closing valve 18 of the outdoor unit 2 connected to the refrigerant communication pipes 6 and 7 are opened.

  During the cooling operation, the four-way switching valve 12 is in the state indicated by the solid line in FIG. 1, that is, the discharge side of the compressor 11 is connected to the gas side of the outdoor heat exchanger 13 and the suction side of the compressor 11 is the accumulator 15. The gas refrigerant side closing valve 18 and the refrigerant communication pipe 7 are connected to the gas side of the indoor heat exchanger 4. In the cooling operation, the air conditioner 1 uses the outdoor heat exchanger 13 as a refrigerant condenser compressed in the compressor 11 and the indoor heat exchanger 4 as a refrigerant evaporator condensed in the outdoor heat exchanger 13. To function as.

  During heating operation, the four-way switching valve 12 is in the state indicated by the broken line in FIG. 1, that is, the discharge side of the compressor 11 is on the gas side of the indoor heat exchanger 4 via the gas refrigerant side closing valve 18 and the refrigerant communication pipe 7. And the suction side of the compressor 11 is connected to the gas side of the outdoor heat exchanger 13. In the heating operation, the air conditioner 1 uses the indoor heat exchanger 4 as a refrigerant condenser compressed in the compressor 11 and the outdoor heat exchanger 13 as a refrigerant evaporator condensed in the indoor heat exchanger 4. To function as.

  During operation, the outdoor unit 2 performs control to change the setting of the device based on the temperature of the outdoor air (external temperature) exchanged with the refrigerant. Therefore, the outdoor unit 2 includes an outdoor temperature sensor 30 that detects the temperature of the outdoor air supplied to the outdoor heat exchanger 13.

(2) Outdoor unit As shown in FIGS. 2 and 3, the outdoor unit 2 installed outside a building or the like includes a substantially rectangular parallelepiped unit casing 20. As shown in FIG. 3, the outdoor unit 2 has a structure in which a blower chamber S <b> 1 and a machine chamber S <b> 2 are formed by dividing the internal space of the unit casing 20 into two by a partition plate 28 extending in the vertical direction ( So-called trunk type structure). An outdoor heat exchanger 13 and an outdoor fan 16 are arranged in the blower room S1, and a compressor 11, an accumulator 15 and the like are arranged in the machine room S2.

  The unit casing 20 includes a top plate 21, a bottom plate 22, a blower room side plate 23, a machine room side plate 24, a blower room side front plate 25, and a machine room side front plate 26 that are plate members made of steel plates. And is configured. The machine room side plate 24 constitutes a part of a side surface portion of the unit casing 20 near the machine room S2 and a back surface portion of the unit casing 20 near the machine room S2. The machine room side plate 24 includes a main body portion 24a and an end portion 24b.

  The outdoor unit 2 is configured to suck outdoor air into the blower chamber S <b> 1 in the unit casing 20 from a part of the back surface and side surface of the unit casing 20 and blow out the sucked outdoor air from the front surface of the unit casing 20. Therefore, the outdoor air suction port 20a sucked into the blower chamber S1 in the unit casing 20 is between the rear end portion of the blower chamber side plate 23 and the end portion of the machine chamber side plate 24 on the blower chamber S1 side. The outdoor air inlet 20b is formed in the blower chamber side plate 23. Further, a blower chamber side front plate 25 is provided with an outlet 20c for blowing the outdoor air sucked into the blower chamber S1 to the outside. The front side of the air outlet 20c is covered with a fan grill 25a.

  The temperature sensor holder 40 that holds the outside air temperature sensor 30 shown in FIG. 1 is attached to the machine room side plate 24 as shown in FIG. 4 is a front view of the machine room side plate, and FIG. 5 is a cross-sectional view of the machine room side plate taken along the line II of FIG. The machine room side plate 24 includes a main body 24a and an end 24b to which the temperature sensor holder 40 is attached. The end 24b of the machine room side plate 24 is formed by bending one side of the main body 24a. The end 24b extends from the top to the bottom of the machine room side plate 24 without chipping. When attaching the conventional thermistor housing as described in the above-mentioned Patent Document 1 to the end portion, it is necessary to cut out the end portion. I couldn't extend it down to the bottom. A recess 24d is formed in the vicinity of the end 24b along the end 24b, and the machine room side plate 24 is reinforced to prevent deformation by the recess 24d.

  As will be described later, the temperature sensor holder 40 is provided with a claw portion, and the machine room side plate 24 is formed with an opening 24c into which the claw portion is fitted. Two openings 24c are provided at the top and bottom, and each has a horizontally long rectangular shape. The opening 24c is opened by pressing at the same time when pressing the shape of the machine room side plate 24 from a single steel plate, for example.

(2-1) Configuration of Outside Air Temperature Sensor FIG. 6 shows an outside air temperature sensor 30, FIG. 6 (a) is a perspective view showing an appearance of the outside air temperature sensor, and FIG. 6 (b) is an outside air temperature. It is typical sectional drawing which shows the outline | summary of a structure of a sensor. The outside air temperature sensor 30 mainly includes a temperature sensing element 31 such as a thermistor, a lead wire 32, an electric wire 33 such as a harness, a metal case 34, and a mold resin 35. A lead wire 32 is connected to the temperature sensing element 31, and a signal to be converted according to temperature is transmitted to the lead wire 32. The lead wire 32 is connected to the electric wire 33, and a signal corresponding to the temperature is transmitted to the control unit (not shown) of the outdoor unit 2 through the electric wire 33. The temperature sensitive element 31, the lead wire 32, and the electric wire 33 are enclosed in a cylindrical metal case 34 with a mold resin 55 such as epoxy. The metal case 34 is formed, for example, by processing copper or the like into a cylindrical shape.

(2-2) Configuration of Temperature Sensor Holder FIG. 7 is a plan view of the temperature sensor holder, FIG. 8 is a front view of the temperature sensor holder, FIG. 9 is a side view of the temperature sensor holder, and FIG. It is the II-II sectional view taken on the line. The temperature sensor holder 40 shown in FIGS. 7 to 10 is made of a resin such as polypropylene, and includes a plate-like main body 41, a claw portion 42, a hook 43, and a concave portion 44.

  The plate-like main body 41 has a substantially rectangular shape in plan view, and the first plate-like portion 41a and the second plate-like portion 41b, and the first plate-like portion 41a and the second plate, respectively, each having a substantially rectangular shape. It has the hinge part 41c currently formed between the shape parts 41b. When the temperature sensor holder 40 is attached to the unit casing 20, the machine room side plate 24 is located on the opposite side of the surface of the first plate-like portion 41a shown in FIG.

  The first plate-like portion 41 a of the plate-like main body 41 is provided with a claw portion 42 and a concave portion 44 that are integrally molded with the plate-like main body 41. The claw portion 42 extends vertically from the first plate-like portion 41 a toward the machine room side plate 24. As shown in FIG. 9, in a side view, the tip of the claw portion 42 is thin, swells as it approaches the first plate-like portion 41a, and further shrinks as it approaches the first plate-like portion 41a. When the claw portion 42 is fitted into the opening 24c of the machine room side plate 24, the most swollen portion of the claw portion 42 is located slightly outside the upper side of the upper opening 24c, and the lower opening It is located slightly below the lower side of the portion 24c. Therefore, in the middle of fitting the claw part 42 into the opening 24c of the machine room side plate 24, the two claw parts 42 are bent so as to approach each other, and when fitted, the claw part 42 returns to its original state. Due to the elasticity of the claw portion 42, the claw portion 42 is firmly fitted into the opening 24c.

  The concave portion 44 of the first plate-like portion 41a is bent in an L shape when viewed from the machine room side plate 24 side. As shown in FIG. 10, a cylindrical metal case 34 of the outside air temperature sensor 30 is fitted into a portion of the recess 44 that extends in the longitudinal direction of the first plate-like portion 41 a. A claw 44 a is provided inside the recess 44 to hold the metal case 34. Further, the electric wire 33 of the outside temperature sensor 30 passes through a portion of the recess 44 extending in the short direction of the first plate-like portion 41a. When the outside air temperature sensor 30 is installed in the recess 44, the second plate portion 41b is bent by the hinge portion 41c to cover the recess 44. At this time, the 2nd plate-shaped part 41b is hooked by the nail | claw 45, and maintains the folded state. The recess 44 is provided with an opening 44 c so that the outside air temperature sensor 30 is exposed to outside air.

  The second plate-like portion 41 b of the plate-like main body 41 is provided with an L-shaped hook 43 integrally formed with the plate-like main body 41. Since the hook portion 42 extends long in parallel with the cross section of the hook 43 having an L shape, the temperature sensor holder 40 can be stably stopped on the machine room side plate 24. In a state where the hook 43 is not folded by the hinge portion 41c, the hook 43 is positioned on the side opposite to the machine room side plate 24 side. By forming the claw portion 42 and the hook 43 on different surfaces in a state where they are not folded in this way, it becomes easy to perform integral molding with a mold, and the molding cost can be reduced.

(2-3) Attaching the temperature sensor holder FIG. 11 is a partially enlarged perspective view showing a state where the temperature sensor holder is attached to the machine room side plate. FIG. 12 is a partially enlarged plan view showing an internal configuration of the outdoor unit when the outdoor unit is viewed from above except for the top plate. When attaching the temperature sensor holder 40, first, the hook 43 is hooked on the end portion 24 b of the machine room side plate 24. With the hook 43 hooked, the claw portion 42 is pushed into the opening 24 c of the machine room side plate 24. 11 and 12, the temperature sensor holder 40 can be attached to the machine room side plate 24 with the hook 43 hooked on the end 24b. As can be seen from FIGS. 11 and 12, a temperature sensor holder 40 is attached so as to protrude from the machine room side plate 24 in order to detect the temperature of the outdoor air sent to the outdoor heat exchanger 13. Therefore, an operator or the like is easily caught on the protruding portion of the temperature sensor holder 40, and if there is no hook 43, the temperature sensor holder 40 is easily detached from the machine room side plate 24.

(3) Features of outdoor unit (3-1)
In the outdoor unit 2 described above, the machine room side plate 24 of the unit casing 20 (housing) has a main body portion 24a and an end portion 24b formed by bending one side of the main body portion 24a. The end 24 b of the machine room side plate 24 is disposed in the vicinity of the back side of the outdoor heat exchanger 13 that performs heat exchange of the outside air sucked from the outside of the unit casing 20. As shown in FIGS. 7 to 10, the temperature sensor holder 40 includes a claw portion 42 (first locking portion) for hooking on the opening 24 c of the main body portion 24 a of the machine room side plate 24, and a machine A hook 43 (second locking portion) for hooking on the tip of the end portion 24b of the chamber side plate 24 is provided.

  Conventionally, in a product as described in Patent Document 1 or a product sold in the market, in order to attach a conventional temperature sensor holder as shown in FIG. It was necessary to provide from the end part 124b of the chamber side plate 124 to the main body part 124a. Therefore, in the conventional outdoor unit, when the conventional outdoor units are stacked in multiple stages during transportation, a load is applied in the vertical direction as indicated by arrows, and the machine room side plate 124 starts from the notch 100. In some cases, problems such as bending may occur.

  On the other hand, since the temperature sensor holder 40 described above can hook the hook 43 having an L-shaped cross section onto the end 24b of the machine room side plate 24, it is necessary to cut off the end 24b in the middle as in the prior art. Since the end 24b can be extended over the entire side of the main body 24a, the cross section perpendicular to the direction in which the end 24b extends has an L-shaped shape (see FIG. 5) over the entire side of the main body 24a. Can do. Thereby, the strength reduction of the machine room side plate 24 accompanying the attachment of the outside air temperature sensor 30 can be suppressed, and consequently the strength reduction of the unit casing 20 can be suppressed.

(3-2)
The temperature sensor holder 40 has a claw portion 42 integrally formed with a plate-like main body 41 formed of resin. Further, the hook 43 is integrally formed with the plate-like main body 41 that is formed of resin. Since these can be integrally molded, the claw portion 42 and the hook 43 can be easily manufactured, and the temperature sensor holder 40 can be configured compactly.

  Since the temperature sensor holder 40 can be fitted into the opening 24c of the machine room side plate 24 with the hook 43 hooked on the end 24b, the temperature sensor holder 40 can be easily attached and detached. This makes it easier to manufacture and maintain.

  Since the cross-sectional shape of the hook 43 is L-shaped, the hook 43 can be slid into the end portion 24b, and attachment is easy. After the claw portion 42 is fitted into the opening 24c of the machine room side plate 24, the claw portion 42 is fitted into the opening 24c, so that the movement in the direction parallel to the side plate of the temperature sensor holder 40 is performed. Therefore, the temperature sensor holder 40 is prevented from falling off in a direction parallel to the main body 24a of the machine room side plate 24. Furthermore, it is prevented that an operator etc. catches the location of the plate-shaped main body 41 on the opposite side to the nail | claw part 42, and the temperature sensor holder 40 remove | deviates because the hook 43 is caught by the edge part 24b. Thus, since the temperature sensor holder 40 is prevented from falling off, the temperature sensor holder 40 that can be easily attached and detached and can be sufficiently fixed can be provided.

(3-3)
The temperature sensor holder 40 described above includes a hinge portion 41c for folding the plate-like main body 41 (the first plate-like portion 41a and the second plate-like portion 41b) in two and a recess 44 for holding the outside air temperature sensor 30. Is formed on the plate-like main body 41. Since the second plate-like portion 41b is bent toward the protruding side of the claw portion 42 and the concave portion 44 is covered, the plate-like main body 41 is fitted by the fitting of the claw portion 42 into the opening 24c of the machine room side plate 24. It is possible to maintain the state in which the concave portion 44 is covered by being folded in two. The temperature sensor holder 40 described above has a configuration in which the claw 45 is hooked on the second plate-like portion 41b in order to assist in maintaining such a state.

  Therefore, attachment in the state which hold | maintained the external temperature sensor 30 in the temperature sensor holder 40 becomes easy. As a result, the damage at the time of attachment and detachment of the outdoor temperature sensor 30 to the outdoor unit 2 is reduced.

DESCRIPTION OF SYMBOLS 1 Air conditioning apparatus 2 Outdoor unit 3 Indoor unit 20 Unit casing 30 Outside air temperature sensor 40 Temperature sensor holder 41 Plate-shaped main body 41a 1st plate-shaped part 41b 2nd plate-shaped part 41c Hinge part 42 Claw part 43 Hook 44 Recessed part

JP 2011-137598 A

Claims (4)

A housing (20) having a side plate (24) having a main body (24a) and an end (24b) formed by bending one side of the main body;
A heat exchanger (13) provided inside the housing, disposed near the end of the side plate, and performing heat exchange of outside air sucked from the outside of the housing;
An outside air temperature sensor (30) for detecting the temperature of the outside air heat exchanged in the heat exchanger;
A first locking portion (42) for hooking on the main body portion of the side plate and a second locking portion (43) for hooking on the tip of the end portion of the side plate, holding the outside air temperature sensor. The outdoor unit of a freezing apparatus provided with the temperature sensor holder (40) to do. The side plate has an opening (24c) formed in the main body,
The temperature sensor holder further includes a plate-shaped main body (41) formed of resin, and the first locking portion is a claw portion that fits into the opening formed integrally with the plate-shaped main body ( 42),
The outdoor unit of the refrigeration apparatus according to claim 1. The temperature sensor holder is a hook (43) having an L-shaped cross section in which the second locking portion is integrally formed with the plate-shaped main body.
The outdoor unit of the refrigeration apparatus according to claim 2. In the temperature sensor holder, a hinge part (41c) for folding the plate-like main body in two and a recess (44) for holding the temperature sensor are formed in the plate-like main body, and the opening of the side plate The plate-shaped main body is folded in two by fitting the claw portion to a portion, and the concave portion is configured to be covered with a lid.
The outdoor unit of the refrigeration apparatus according to claim 3.

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