KR20050075957A - Outdoor unit for multi-airconditioner - Google Patents

Abstract

The present invention relates to an outdoor unit of a multi-type air conditioner in which a blowing fan and a fan motor are firmly fixed to an inner upper end of an outdoor unit by a motor mount.

The outdoor unit according to the present invention is a blowing fan 170 for generating a flow of air, a fan motor 172 for providing rotational power to the blowing fan 170, and a motor mount for supporting the fan motor 172 ( 174 and the front upper bracket 116 and the rear upper bracket 194 to which the motor mount 174 is fixed. The motor mount 174 includes a fixing plate 174 'on which the fan motor 172 is seated, and a support 174 ″ supporting the fixing plate 174'. A pair is provided, and the center portion is formed to be recessed downward. According to the outdoor unit of the multi-type air conditioner according to the present invention having such a configuration, the air conditioner can be easily installed and the fixing of the fan motor is more robust.

Description

Outdoor unit for multi-air conditioner {Outdoor unit for multi-airconditioner}

The present invention relates to an air conditioner, and more particularly, to an outdoor unit of a multi-type air conditioner in which a blowing fan and a fan motor are firmly fixed to an inner upper end of an outdoor unit by a motor mount.

In general, an air conditioner is a cooling / heating system that cools a room by a repetitive action of inhaling hot air in a room, exchanging heat with a low temperature refrigerant, and then discharging it into the room. -Condenser-Expansion valve-Evaporator which forms a series of cycles.

Recently, in addition to heating and cooling, there are various additional functions such as the air purifying function that inhales and filters contaminated air in the room and makes it into clean air and reinjects it into the room, and the dehumidification function of making humid air into wet and dry air again. It also functions.

Meanwhile, as is well known, an air conditioner may be classified into a separate type air conditioner in which an outdoor unit and an indoor unit are separately installed, and an integrated air conditioner in which the outdoor unit and the indoor unit are integrally installed.

Recently, multi-type air conditioners have been released that can be effectively applied when two or more air conditioners are installed in a home or when an air conditioner is installed in each office in a building having several offices. This multi-type air conditioner is connected to a plurality of indoor units in one outdoor unit, it is possible to obtain the same effect as installing a plurality of separate air conditioner.

1 is a schematic view showing an installation state of a conventional multi-type air conditioner, and FIG. 2 is a block diagram showing a configuration of a conventional multi-type air conditioner and a flow of a refrigerant. Referring to this, the outdoor unit 1 includes a compressor 10, an accumulator 20, an outdoor heat exchanger 30, and the like, and the indoor unit 50 includes an indoor heat exchanger 60 and an expansion valve 70.

In the multi-type air conditioner, a plurality of indoor units 50 are connected to one outdoor unit 1, and a high pressure pipe 80 having a high pressure and a relatively low pressure are connected between the outdoor unit 1 and the indoor unit 50. The low pressure pipes 90 are respectively connected.

When the air conditioner of the configuration described above performs the cooling action, the outdoor heat exchanger 30 of the outdoor unit 1 serves as a condenser to condense the high-temperature / high pressure gaseous refrigerant fed from the compressor 10. The refrigerant condensed as described above is expanded to a low-temperature / low-pressure gas while passing through the expansion valve 70 and is sent to the indoor heat exchanger 60.

The refrigerant introduced into the indoor heat exchanger 60 is converted into a two-phase refrigerant in which gaseous and liquid states of low temperature / low pressure are mixed as heat is exchanged with indoor air. The refrigerant is passed through the accumulator 20 and then sent back to the compressor 10 to form one cycle of the refrigerant.

Next, when the air conditioner performs the heating operation, the flow of the refrigerant and the action of the heat exchanger are reversed. That is, the refrigerant compressed by the compressor 10 flows in the order of the accumulator 20-> indoor heat exchanger 60-> expansion valve 70-> outdoor heat exchanger 30.

At this time, the indoor heat exchanger 60 serves as a condenser to heat exchange the indoor air with the refrigerant having a high temperature and high pressure passing therein, and the outdoor heat exchanger 30 exchanges the outdoor air with the low temperature and low pressure refrigerant therein. It acts as an evaporator.

3 to 5 show a conventional outdoor unit 1. As shown in these figures, the base fan 2 is formed in the lower portion is seated a number of parts, the front end of the base fan 2 is provided with a front panel 4 to form a front appearance. The front panel 4 includes an upper front panel 4 'provided at an upper side and a front lower panel 4 "provided at a lower side thereof.

The front lower panel 4 "is further provided with a pipe bracket 4" a. That is, the lower end of the front lower panel 4 "is cut to a certain portion, and the cutout is configured to shield the pipe bracket 4" a, and the pipe bracket 4 "a is connected to the high pressure pipe 80. The low pressure pipe (90) is guided to be installed in communication with the indoor unit (50).

A center bracket 6 is installed between the front upper panel 4 'and the front lower panel 4 "to guide the installation. Meanwhile, an upper bracket 6' is provided at the top of the front upper panel 4 '. It is further installed, the end portion of the motor mount 48 'to be described below is fastened to the upper bracket (6').

The front frame 8 is provided at the left and right ends of the front panel 4, that is, at the front left and right edges of the base pan 2. The front frame 8 is formed long and vertically to support the front panel 4 and the side grill 34 to be described below.

The base fan 2 is provided with a compressor 10. The compressor 10 is to compress the refrigerant to be a high temperature and high pressure, respectively provided on the left and right sides. That is, a constant speed compressor 10 'for constant speed operation is installed on the right side, and an inverter compressor 10 "is installed on the left side.

One side of the compressor 10 is provided with an oil separator 12, respectively. The oil separator 12 filters the oil mixed in the refrigerant discharged from the compressor 10 to be recovered to the compressor 10.

The valve support 14 is installed at a predetermined height at the left rear end of the base pan 2, and the service valve 16 is installed and supported at an upper end of the valve support 14.

An accumulator 20 is installed between the center portion of the base fan 2, that is, between the constant speed compressor 10 ′ and the inverter compressor 10 ″. The accumulator 20 filters the liquid refrigerant so that only the refrigerant in the gaseous state is provided. To be introduced into the compressor (10).

The control box 22 is installed above the compressor 10. Although not shown, the control box 22 includes control components such as voltage transformers and capacitors, and a circuit board. The control box 22 has a rectangular box shape with an open front, and a control cover 22 'is provided at the front to shield the inside.

The outdoor end heat exchanger 30 is provided at the side end and the rear end of the base fan 2. The outdoor heat exchanger (30) is provided in pairs on the left and right to allow heat exchange between the refrigerant flowing inside and the outside air.

That is, the left outdoor heat exchanger 30 'in the' ┏ 'shape (viewed from the top) is installed on the left side, and the right outdoor heat exchanger 30 "in the' ┓ 'shape (viewed from the top) is installed on the right side. And the tube assembly 32 for guiding the introduction of the refrigerant is further formed at the inlet of the outdoor heat exchanger 30, the receiver 33 is formed at the outlet.

The side grille 34 is installed at the left end and the right end of the base fan 2, and the rear grille 36 is installed at the rear end thereof. The rear grill 36 is provided with a pair to correspond to the outdoor heat exchanger (30). That is, the left rear grill 36 'is installed at the rear of the left outdoor heat exchanger 30' and the right rear grill 36 'is installed at the rear of the right outdoor heat exchanger 30'.

A rear frame 38 is provided between the left rear grill 36 ′ and the right rear grill 36 ″ to fix the rear grill 36, and the rear end left and right edges of the base fan 2 are rearward. Frames 38 'are each formed.

The top face of the outdoor unit 1 is formed by the top panel 40. The top panel 40 is formed of a square flat plate corresponding to the base pan 2, and a pair of vent holes 40 'are formed at left and right sides of the center.

The shroud 42 is installed on the upper surface of the vent hole 40 '. The shroud 42 has a cylindrical shape protruding upward, and guides the air discharged to the outside by the blowing fan 46 to be described below. The discharge grill 44 is provided at the top of the shroud 42.

The blowing fan 46 is installed inside the shroud 42. The blowing fan 46 is rotated by the fan motor 48 provided below, and serves to discharge the internal air to the outside. The fan motor 48 is mounted by the motor mount 48 ', and the motor mount 48' is fixed to the upper panel 40.

However, the prior art as described above has the following problems.

Since the shroud 42 protrudes above the upper panel 40, there is a problem that the noise is severe and difficult to install. The motor mount 48 'is fixed to the upper panel 40, and thus, the fan motor 48 is not firmly fixed.

Accordingly, an object of the present invention is to solve the problems of the prior art as described above, and to provide an outdoor unit of a multi-type air conditioner in which a shroud and a blowing fan are provided under the upper panel.

Another object of the present invention is to allow the fan motor to be more firmly fixed by the motor mount.

The outdoor unit of the multi-type air conditioner according to the present invention for achieving the above object, a blowing fan for generating a flow of air, a fan motor for providing rotational power to the blowing fan, and a motor for supporting the fan motor And an upper bracket to which the motor mount is fixed.

The motor mount has a configuration including a fixed plate on which the fan motor is seated, and a support for supporting the fixed plate.

The central portion of the support is formed to be recessed downward.

And the support is provided with a pair, the front end and the rear end is fixed to the upper bracket.

On the other hand, the upper bracket, the upper front bracket is installed to the left and right on the front top of the outdoor unit, and the rear upper bracket is installed to the left and right on the rear top of the outdoor unit.

According to the outdoor unit of the multi-type air conditioner according to the present invention having such a configuration, the air conditioner can be easily installed and the fixing of the fan motor is more robust.

Hereinafter, exemplary embodiments of the present invention as described above will be described in detail with reference to the accompanying drawings.

6 is a schematic view showing an installation state of the multi-type air conditioner according to the present invention, and FIG. 7 is a block diagram of the multi-type air conditioner according to the present invention. As illustrated, the outdoor unit 100 includes a constant speed compressor 120, an inverter compressor 120 ′, an accumulator 132, and an outdoor heat exchanger 180 and an outdoor solenoid valve 102 (LEV: linear expansion valve, hereinafter “outdoor LEV”). And the indoor unit 200 includes an indoor heat exchanger 202, an expansion valve 204, and the like.

In the multi-type air conditioner, a plurality of indoor units 200 are connected to one or more outdoor units 100. The common liquid pipe 210, which is a single pipe through which liquid refrigerant flows, is connected between the outdoor unit 100 and the indoor unit 200, The common engine 212, which is a single pipe through which gas refrigerant flows, is formed in communication. And between the two or more outdoor unit 100 is installed in communication with the high and low pressure common pipe 214 to maintain the balance of the refrigerant.

The high and low pressure common pipe 214 is installed such that the inlet side of the outdoor heat exchanger 180 provided in the plurality of outdoor units 100 communicates with each other to maintain the balance of the refrigerant between the outdoor units 100. Meanwhile, the refrigerant is also introduced into the outdoor heat exchanger 180 of the outdoor unit 100 which is not used among the plurality of outdoor units 100, thereby bringing the effect of improving the heat exchange efficiency. And the high or low pressure common pipe 214 is a high pressure or low pressure refrigerant flows in accordance with the cooling or heating action.

The indoor unit 200 is formed with a branch liquid pipe 210 'through which liquid refrigerant flows, and a branch engine 212' through which gas refrigerant flows, and such a branch liquid pipe 210 'and a branch engine 212' are common. It is in communication with the liquid pipe 210 and the common engine 212.

In addition, the diameters of the plurality of branch liquid pipes 210 'and the branch engine 212' are different depending on the capacity of the indoor unit 200 to be connected.

Meanwhile, the outdoor unit 100 is formed with an outdoor liquid pipe 210 "through which liquid refrigerant flows, and an outdoor engine 212" through which gas refrigerant flows, and the outdoor liquid pipe 210 "and an outdoor engine 212" are respectively formed in the outdoor unit 100. Communicating with the common liquid pipe 210 and the common engine 212.

8 to 14 show the outdoor unit configuration of the multi-type air conditioner according to the present invention. As shown in these figures, a base fan 110 forming a bottom surface is provided at the bottom to support a plurality of parts, and the front panel 112 forming a front lower exterior at the tip of the base fan 110. ) Is provided.

The front grill 114 is installed above the front panel 112. Therefore, the outside air is sucked through the front grill 114, and passes through the outdoor heat exchanger 180 to be described below. On the other hand, the upper front bracket 116 is further installed on the upper side of the front grill 114, the front end bracket 116 is fastened to the front end of the motor mount 174 to be described below.

Compressors 120 and 120 'are installed on an upper surface of the base fan 110. The compressors 120 and 120 'are configured to compress the refrigerant to be high temperature and high pressure, and are provided at left and right sides, respectively. That is, a relatively constant speed compressor 120 for constant speed operation is installed on the right side, and an inverter compressor 120 ', which is a variable speed heat pump, is installed on the left side.

A refrigerant injector 120a is installed at the inlet side of the compressors 120 and 120 '. The refrigerant injector 120a prevents the compressor from being burned by supplying a refrigerant when the compressors 120 and 120 'are overheated according to operating conditions. The refrigerant used herein is an outdoor heat exchanger 180 to be described below. It is preferred that the refrigerant discharged from is configured to be used.

A constant oil compressor 121 is installed between the constant speed compressor 120 and the inverter compressor 120 'such that the constant speed compressor 120 and the inverter compressor 120' communicate with each other. Therefore, when oil supply shortage occurs in one of the compressors, the compressor 120 is replenished from the other compressor to prevent burnout of the compressors 120 and 120 'due to the insufficient flow rate.

As the compressors 120 and 120 ', a low noise and excellent scroll compressor is used. In particular, the inverter compressor 120' is an inverter scroll compressor whose rotation speed is adjusted according to the load capacity. Therefore, when a small number of indoor units 200 are used and the load capacity is small, the inverter compressor 120 'is operated first, and the constant speed compressor is not available when the load capacity is gradually increased and cannot be handled by the inverter compressor 120'. 120 is activated.

At the outlet side of the constant speed compressor 120 and the inverter compressor 120 ', the compressor discharge temperature sensors 120b and 120'b and the oil separator 122 respectively measure the temperature of the refrigerant discharged from the compressors 120 and 120'. do. The oil separator 122 filters the oil mixed in the refrigerant discharged from the compressors 120 and 120 'to be recovered to the compressors 120 and 120'.

That is, oil used to cool frictional heat generated when the compressors 120 and 120 'are driven is discharged to the outlet of the compressors 120 and 120' together with a refrigerant. The oil in the refrigerant is separated into the oil separator 122. Separated from and sent back to the compressor (120, 120 ') through the oil return pipe (123).

In addition, a check valve 122 ′ is further installed at an outlet side of the oil separator 122 to prevent a backflow of the refrigerant. That is, when only one of the constant speed compressor 120 or the inverter compressor 120 'is operated, the compressed refrigerant is not flowed back into the stationary compressors 120 and 120'.

The oil separator 122 is configured to communicate with the four-way valve 124 by the pipe. The four-way valve 124 is arranged to change the flow direction of the refrigerant according to the cooling and heating operation, each port is an outlet (or oil separator) of the compressor (120, 120 '), the inlet of the compressor (120, 120') Or an accumulator), an outdoor heat exchanger 180, and an indoor unit 200.

Therefore, the refrigerant discharged from the constant speed compressor 120 and the inverter compressor 120 'is collected in one place, and then flows into the four-way valve 124. The compressors 120 and 120' are provided at the inlet of the four-way valve 124. The high pressure sensor 124 'for checking the pressure of the refrigerant discharged from the is installed.

Meanwhile, a hot gas pipe 125 for allowing a part of the refrigerant flowing into the four-way valve 124 from the oil separator 122 to be directly introduced into the accumulator 132 will be described below. It is installed across the directional valve (124).

When the hot gas pipe 125 needs to increase the pressure of the low pressure refrigerant flowing into the accumulator 132 during the operation of the air conditioner, the high pressure refrigerant at the discharge port of the compressors 120 and 120 'is directly directed to the inlet side of the compressor 120 and 120'. In order to be supplied, such a hot gas pipe 125 is provided with a hot gas valve 125 ′, which is a bypass valve, to open and close the pipe.

The valve support 126 is installed at the center of the first half of the upper surface of the base pan 110. The valve support 126 serves to support and guide the outdoor liquid pipe 210 ", the outdoor engine 212", and the high and low pressure common pipe 214, and a service valve 128 is also installed therein. Meanwhile, the pipes 210, 212, and 214 supported by the valve support 126 are drawn out through the pipe inlet 188 ′ of the side panel 188, which will be described below, and are connected to the outdoor unit 100.

An overcooler 130 is formed at the rear left end of the upper surface of the base fan 110. The supercooler 130 is to further cool the refrigerant heat exchanged in the outdoor heat exchanger 180 to be described below, any position of the outdoor liquid pipe 210 "connected to the outlet side of the outdoor heat exchanger 180. Is formed.

The supercooler 130 is formed of a double tube. That is, the outdoor liquid pipe 210 " is provided on the inside, and a reverse feed pipe 130 'is formed on the outside. Thus, the reverse feed pipe 130' is branched from the outlet of the supercooler 130. The transfer pipe 130 'is provided with a supercooled expansion valve 130'a for cooling the refrigerant by expansion.

In this case, a part of the refrigerant discharged from the subcooler 130 is introduced into the reverse transfer pipe 130 'and cooled while passing through the subcooling expansion valve 130'a, and the cooled refrigerant is the subcooler ( While refluxing 130, the inner refrigerant is further cooled. The countercurrent coolant exiting the subcooler 130 is supplied to the accumulator 132 to be described below and circulated.

On the other hand, the outlet of the subcooler 130 is installed with a liquid pipe temperature sensor 130a for measuring the temperature of the refrigerant discharged from the outdoor unit 100, the subcooling inlet sensor 130 at the outlet of the subcooling expansion valve (130'a). 'b) is provided to measure the temperature of the reflux refrigerant flowing into the subcooler 130, the supercooling outlet sensor 130'c in the reverse transfer pipe 130' flowing the reflux refrigerant discharged from the subcooler 130 ) Is provided.

Therefore, the refrigerant passing through the outdoor heat exchanger 180 flows through the central portion and is configured such that the low temperature refrigerant expanded by an expansion valve (not shown) flows in the opposite direction to lower the temperature of the refrigerant.

On one side of the subcooler 130, that is, the one side of the outdoor liquid pipe 210 ″ in which the refrigerant discharged from the outdoor heat exchanger 180 is guided to the indoor unit 200, a dryer 131 and a dryer are installed. 131 serves to remove moisture contained in the refrigerant flowing through the outdoor liquid pipe 210 ".

An accumulator 132 is installed between a central portion of the base fan 110, that is, between the constant speed compressor 120 and the inverter compressor 120 ′. The accumulator 132 filters the liquid refrigerant so that only the gaseous refrigerant flows into the compressors 120 and 120 '.

That is, when the refrigerant remaining in the liquid phase without being evaporated into gas among the refrigerant flowing from the indoor unit 200 directly flows into the compressors 120 and 120 ', the compressor is formed into a gaseous refrigerant having a high temperature and high pressure. ), The load is increased, which causes damage to the compressors 120 and 120 '.

Therefore, among the refrigerants introduced into the accumulator 132, the refrigerant which is not evaporated and remains in the liquid phase is stored in the lower part of the accumulator 132 because it is relatively heavier than the refrigerant in the gas phase, and only the gaseous refrigerant in the upper portion of the compressor 120, 120 Flows into '). On the other hand, the inlet side of the accumulator 132 is provided with a suction pipe temperature sensor 132 ′ for measuring the temperature of the refrigerant sucked and a low pressure sensor 132 ″ for checking the pressure of the refrigerant.

Front frames 134 and 134 'are formed at both ends of the base pan 110, respectively. The front frames 134 and 134 'are formed vertically long at the tip of the base fan 110, and are divided into a front left frame 134 installed at the left end and a front right frame 134' installed at the right end. .

The front frames 134 and 134 'support the front upper bracket 116, the front grill 114, and the control boxes 140 and 140' to be described below. On the other hand, the center frame 136 is provided at the center of the front left frame 134 and the front right frame 134 '.

Control boxes 140 and 140 ′ are installed below the central frame 136. The control boxes 140 and 140 'are formed in pairs on the left and right sides. That is, the left control box 140 provided on the left side and the right control box 140 'provided on the right side, the left control box 140 is fixed to the front left frame 134 by a hinge 140a. The right control box 140 'is fixed to the front right frame 134' by a hinge 140'a.

The control boxes 140 and 140 'each have a rectangular box shape whose front is opened, and the front is shielded by the front panel 112. The left control box 140 is equipped with a control element such as a voltage transformer 142 and a capacitor 144 and a heating element plate 146 having a plurality of heating elements.

A heat radiating portion 146 ′ formed of heat radiating fins is formed on a rear surface of the heat generating element plate 146. Meanwhile, a heat radiating fan 148 for forcing air flow to the heat radiating portion 146 'is installed at the upper rear side of the left control box 140, and the heat radiating fan 148 is configured as a cross flow fan. Therefore, when the heat radiating fan 148 sucks air and discharges it upward, heat exchange in the heat radiating portion 146 'is promoted, and the heat generating element plate 146 is cooled.

Since the side ends of the control boxes 140 and 140 'are mounted to the front frames 134 and 134' by hinges 140a and 140'a, the hinges 140a and 140'a can be pivoted forward on the axis. Done. Therefore, when after-sales service of the internal parts is required, the control boxes 140 and 140 'can be rotated forward.

The barrier 150 is installed in the central frame 136. The barrier 150 divides the inside of the outdoor unit 100 into an upper space and a lower space. That is, the compressor 120 and 120 'and the control box 140, 140' and the lower side is installed, and the outdoor heat exchanger 180 to be described below is partitioned.

The barrier 150 is provided on the left and right sides similarly to the control boxes 140 and 140 '. The barrier 150 has a horizontal portion 150 'formed rearward from the center frame 136 and an inclined portion 150 "formed to be inclined downward from the rear end of the horizontal portion 150' at a predetermined angle. Is made of.

Meanwhile, an air guide hole 152 is formed in the horizontal portion 150 ′ of the left barrier 150 of the barrier 150, and an air guide cover 154 is installed above the air guide hole 152. The air guide cover 154 is configured such that the front and the top is shielded and the rear is opened, so that the air forcedly blown from the heat radiating fan 148 provided at the bottom is guided to the rear.

The upper surface of the outdoor unit 100 is formed by the upper panel 160. The top panel 160 has a square flat plate shape and is provided in pairs on the left and right sides. In addition, the upper panel 160 has a ventilation hole 162 formed, and the edge of the ventilation hole 162 extends downward to form a cylindrical shroud 164. The shroud 164 is formed integrally with the upper panel 160, preferably made of a plastic material.

The shroud 164 is formed in a cylindrical shape to guide the air forcedly blown by the blowing fan 170 to be described below. Meanwhile, a circular discharge grill 166 corresponding to the ventilation hole 162 is mounted on the shroud 164, that is, the ventilation hole 162.

The blowing fan 170 is installed inside the shroud 164. The blowing fan 170 is rotated by the fan motor 172 provided at the bottom, and discharges the air therein upward. That is, when the fan motor 172 generates a rotational force by the power applied from the outside, the blowing fan 170 fixed to one end of the rotation shaft of the fan motor 172 is rotated to discharge the air upward.

The fan motor 172 is fixed by the motor mount 174. The motor mount 174 includes a square plate fixed plate 174 'on which the fan motor 172 is mounted, and a support 174 ″ supporting the fixed plate 174'.

The support 174 "is formed in a pair on the left and right, and the fixing plate 174 'is mounted at the center of the pair of supports 174". The front and rear ends of the support 174 "are bent upwards and fixed to the front upper bracket 116 and the rear upper bracket 194, which will be described below, by screws. The central portion of ") is formed to be recessed below the front end and the rear end.

An outdoor heat exchanger 180 is provided below the upper panel 160. The outdoor heat exchanger 180 is installed in pairs before and after the heat exchange between the refrigerant flowing inside and the outside air. That is, the front heat exchanger 182 is installed below the front end of the upper panel 160, and the rear heat exchanger 184 is installed below the rear end of the upper panel 160.

The lower half of the front heat exchanger 182 is bent backwards. That is, it consists of a vertical portion 182 'extending downwardly from the front end of the front panel 112 at a predetermined length, and an inclined portion 182 " formed to be inclined backward at a predetermined angle from the bottom of the vertical portion 182'. do.

Accordingly, the lower end of the inclined portion 182 ″ and the lower end of the rear heat exchanger 184 are adjacent to each other, and the lower end of the outdoor heat exchanger 180 has a predetermined distance from the base fan 110. Meanwhile, a tube assembly 180 'is further formed at a side surface of the outdoor heat exchanger 180 to distribute the refrigerant supplied from the compressors 120 and 120' to each part.

On the other hand, the heat exchanger temperature sensor 180a for measuring the temperature of the heat exchanger is installed inside the outdoor heat exchanger 180, and the outdoor temperature sensor 180b for measuring the temperature of the outside is further provided.

A drain pan 186 is provided below the bottom of the outdoor heat exchanger 180. The drain pan 186 is formed long to the left and right and collects the condensed water generated in the outdoor heat exchanger 180 and discharges it to the side.

Side panels 188 are installed at left and right ends of the upper surface of the base fan 110. The side panel 188 forms a side appearance of the outdoor unit 100, and pipe entrance holes 188 'are formed at the lower end before and after.

The rear grill 190 is installed at the rear end of the base fan 110. The rear grill 190 is formed to correspond to the size of the rear heat exchanger 184, the rear panel 192 is provided below the rear grill 190.

The upper rear bracket 194 is formed to the left and right at an upper end of the rear grill 190. The upper rear bracket 194 is installed on the upper front surface of the rear grill 190 to support the rear end of the support 174 ″ of the motor mount 174.

Meanwhile, a rear frame 196 is installed at the rear end corner of the base fan 110. The rear frame 196 is elongated upward and downward to support the rear grill 190, the rear panel 192, and the upper panel 160.

Hereinafter, the operation of the multi-type air conditioner according to the present invention having the configuration as described above will be described with reference to FIGS.

As described above, in the air conditioner according to the present invention, a plurality of indoor units 200 are connected to one outdoor unit 100, and some or all indoor units 200 are operated according to a user's selection.

When the air conditioner is operated (cooling operation), the outdoor LEV 102 is opened so that the refrigerant flows between the outdoor unit 100 and the indoor unit 200.

First, referring to the refrigerant flow in the outdoor unit 100, the gas refrigerant flowing from the indoor unit 200 passes through the four-way valve 124 and then enters the accumulator 132. The gas refrigerant leaving the accumulator 132 is introduced into the compressors 120 and 120 '. Meanwhile, when the refrigerant supplied to the compressors 120 and 120 'is insufficient or the compressors 120 and 120' are overheated, the refrigerant is supplied from the refrigerant injector 120a.

The refrigerant compressed by the compressors 120 and 120 ′ is discharged to the discharge port and passes through the oil separator 122. In the oil separator 122, oil contained in the refrigerant is separated and recovered to the compressors 120 and 120 ′ through the oil recovery pipe 123.

That is, as the refrigerant is compressed in the compressors 120 and 120 ', oil is mixed in the refrigerant. Since the oil is in the liquid state and the refrigerant is in the gas state, the oil is separated from the oil separator 122 which is the gas-liquid separator.

On the other hand, the oil inside the compressors 120 and 120 'on both sides is balanced by the homogenizing pipe 121 connecting the constant speed compressor 120 and the inverter compressor 120'.

The refrigerant passing through the oil separator 122 flows into the outdoor heat exchanger 180 through the four-way valve 124. Since the outdoor heat exchanger 180 functions as a condenser (in the cooling mode), the refrigerant is cooled through heat exchange with external air to become a liquid refrigerant. The refrigerant passing through the outdoor heat exchanger 180 is further cooled while passing through the subcooler 130.

The refrigerant passing through the supercooler 130 passes through a dryer 131 for removing moisture contained in the refrigerant, and then flows into the indoor unit 200 through the common liquid pipe 210. Meanwhile, some of the refrigerant passing through the compressors 120 and 120 'may be introduced into another outdoor unit 100 through the high and low pressure common pipe 214.

The refrigerant supplied to the other outdoor unit 100 through the high and low pressure common pipe 214 is introduced into the outdoor heat exchanger 180 of the outdoor unit 100 that is stopped to balance the refrigerant pressure as a whole, and the outdoor unit that is stopped ( The predetermined heat exchange also occurs through the outdoor heat exchanger 180 of 100).

When the refrigerant is supplied to the indoor unit 200 through the common liquid pipe 210, the refrigerant is supplied to each indoor unit 200 in operation through the branched liquid pipe 210 ′ branched from the common liquid pipe 210. The refrigerant is decompressed in the expansion valve 204 and heat exchanges in the indoor heat exchanger 202. At this time, since the indoor heat exchanger 202 serves as an evaporator, the refrigerant becomes low pressure gas through heat exchange.

The refrigerant discharged from the indoor heat exchanger 202 is collected through the branch engine 212 ′ to the common engine 212 and then flows into the outdoor unit 100. The refrigerant introduced into the outdoor unit 100 through the common engine 212 and the outdoor engine 212 ″ enters the accumulator 132 through the four-way valve 124.

In the accumulator 132, the liquid refrigerant that has not been evaporated is filtered out, and only the refrigerant in the gaseous state is selected and supplied to the compressors 120 and 120 '. Through this process, one cycle is completed.

On the other hand, when it is operated by heating operation, the refrigerant flows in the opposite direction to the above, and the amount of refrigerant is controlled in the outdoor LEV (102).

Next, the air flow in the outdoor unit 100 will be described with reference to FIG. 13. The fan motor 172 is driven to apply the power to drive the blower fan 170. When the blowing fan 170 is rotated, outside air is introduced into the inside through the front grill 114 and the rear grill 190.

Air introduced into the outdoor unit 100 undergoes heat exchange while passing through the outdoor heat exchanger 180. At this time, when the air conditioner acts as cooling, the outside air receives heat from the outdoor heat exchanger 180 and becomes high temperature air. Becomes

The air passing through the outdoor heat exchanger 180 is forcedly blown upward by the blower fan 170, and the shroud 164 guides the upward discharge of air.

On the other hand, when the heat radiating fan 148 sucks air and discharges it upward, heat exchange in the heat radiating portion 146 'is promoted, and the heat generating element plate 146 is cooled. The air forcedly blown upward from the heat radiating fan 148 passes through the air guide hole 152 of the barrier 150 and then is discharged forward by the air guide cover 154.

The air discharged forward through the air guide cover 154 passes through the front heat exchanger 182 and heat exchange occurs, and is discharged upward through the shroud 164.

The scope of the present invention is not limited to the above-exemplified embodiments, and many other modifications based on the present invention will be possible to those skilled in the art within the above technical scope.

As described above, in the outdoor unit of the multi-type air conditioner according to the present invention, a blowing fan and a fan motor are provided inside the outdoor unit. And the motor mount for supporting the fan motor is formed to be recessed downward from the inner top of the outdoor unit.

Therefore, the outdoor unit is easy to install because the blowing fan does not protrude upward, and the effect of reducing the external emission of noise is expected.

In the present invention, since the front and rear ends of the motor mount supporting the fan motor are fixed to the upper brackets provided at the front and rear of the outdoor unit, the mounting of the fan motor is secured. Therefore, the flow of the fan motor and the blowing fan is prevented to reduce the generation of noise.

1 is a state diagram of a conventional multi-type air conditioner.

Figure 2 is a block diagram showing the configuration of the conventional multi-type air conditioner and the refrigerant flow.

Figure 3 is a perspective view showing the appearance of the outdoor unit of the conventional air conditioner.

Figure 4 is an exploded perspective view showing the configuration of a conventional air conditioner outdoor unit.

Figure 5 is a front view inside the front panel of the conventional air conditioner outdoor unit removed.

6 is a state diagram of the multi-type air conditioner according to the present invention.

Figure 7 is a block diagram showing the configuration and refrigerant flow of the multi-type air conditioner according to the present invention.

8 is a detailed configuration diagram of an outdoor unit of an air conditioner according to the present invention.

9 is a perspective view showing the appearance of the air conditioner outdoor unit according to the present invention.

10 is an exploded perspective view showing the internal configuration of the air conditioner outdoor unit according to the present invention.

Figure 11 is an internal front view of the front panel of the multi-type air conditioner outdoor unit according to the present invention is removed.

12 is an internal front view showing a state in which the left control box constituting the outdoor unit of the multi-type air conditioner according to the present invention is rotated forward.

Figure 13 is a side cross-sectional view of an embodiment of the present invention.

14 is a partial perspective view showing an installation state of the fan motor constituting the embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

100. Outdoor unit 102. Outdoor solenoid valve

110. Base Fan 112. Front Panel

114. Front Grill 116. Front Upper Bracket

120. Constant speed compressor 120 '. Inverter Compressor

120a. Refrigerant injector 121.

121 '. Strainer Oil Temperature Sensor 122. Oil Separator

123. Oil return pipe 124. Four-way valve

126. Valve Support 128. Service Valve

130. Supercooler 130 '. Station

130'a. Subcooling Expansion Valve 132. Accumulator

134,134 '. Front frame 136. Center frame

140. Left control box 140 '. Right control box

142. Voltage Transformers

146. Heating element plate 146 '. Heat dissipation

148. Heat Sink Fan 150. Barrier

152. Air Guide 154. Air Guide Cover

160. Top panel 162. Ventilation

164. Shroud 166. Discharge Grill

170. Blowing fan 172. Fan motor

174. Motor Mount 174 '. Fixed plate

174 ". Support 180. Outdoor Heat Exchanger

182. Front heat exchanger 184. Rear heat exchanger

186. Drain pan 188. Side panel

190. Rear Grill 192. Rear Panel

194. Rear upper bracket 196. Rear frame

200. Indoor unit 202. Indoor heat exchanger

204. Expansion valve 210. Common liquid pipe

210 '. Basin Liquid Tube 210 ".

212. Common Institutions 212 '. Branch

212 ". Outdoor 214. High Low Pressure Common Tube

Claims (5)

Blowing fan which generates the flow of air, A fan motor providing rotational power to the blowing fan; A motor mount for supporting the fan motor; The outdoor unit of the multi-type air conditioner, characterized in that it comprises an upper bracket to which the motor mount is fixed. The method of claim 1, wherein the motor mount, A fixed plate on which the fan motor is seated; The outdoor unit of the multi-type air conditioner, characterized in that having a configuration including a support for supporting the fixed plate. The outdoor unit of the multi-type air conditioner according to claim 2, wherein the center portion of the support is recessed downward. According to claim 3, The support is provided with a pair, the outdoor unit of the multi-type air conditioner, characterized in that the front end and the rear end is fixed to the upper bracket. The method of claim 1, wherein the upper bracket, Front upper bracket installed left and right on the front top of the outdoor unit, The outdoor unit of the multi-type air conditioner, characterized by consisting of a rear upper bracket which is installed left and right on the rear top of the outdoor unit.