KR20030012621A - A air-conditioner installed the receptacle for pump-down - Google Patents

Abstract

PURPOSE: An air conditioner with container for pumping-down is provided to prevent loss of refrigerant during movement and installation of the air conditioner. CONSTITUTION: A condenser(54) includes a plurality of refrigerant pipes(54c) forming flow paths for refrigerant to pass and exchange heat; a refrigerant supply/discharge header(54a) installed on one sides of the refrigerant pipes to supply/discharge refrigerant to/from the refrigerant pipes; a refrigerant passing header(54b) installed to the other sides of the refrigerant pipes to fluidically connect the refrigerant pipes; a plurality of fins(54d) installed to the refrigerant pipes perpendicularly to the refrigerant pipes to expand heat transfer area of the refrigerant pipes; and a container(59) installed on one side of the refrigerant passing header to provide a surplus space for compressing and storing refrigerant in an outdoor unit for movement and installation of an air conditioner.

Description

Air conditioner with the container for pumpdown {A air-conditioner installed the receptacle for pump-down}

The present invention relates to a pump down of an air conditioner, and in particular, by providing a container for providing a surplus space on one side of a heat exchanger, the air conditioner is provided by providing a space where refrigerant is collected when the air conditioner is separated into an outdoor unit and an indoor unit. It relates to an air conditioner equipped with a container for pumping down to prevent the loss of refrigerant during the previous installation.

In general, an air conditioner is a device for maintaining indoor air comfortably, and may be classified into a separate air conditioner, an integrated air conditioner, a window air conditioner, a ceiling air conditioner, and the like according to an installation location or structural features.

Here, the separate air conditioner is installed indoors, the indoor unit to maintain the indoor air comfort by heat exchange with the indoor air, and heat exchange the outdoor air and the refrigerant to supply the refrigerant of the temperature required by the indoor unit The outdoor unit includes a pipe connecting the indoor unit and the outdoor unit.

When the air conditioner is moved after the initial installation, such a separate air conditioner collects all the refrigerant into the outdoor unit and pumps down the valve to lock the valve to prevent the refrigerant circulating inside the indoor unit and the outdoor unit, and then separates the outdoor unit from the outdoor unit. The previous installation is done by moving and re-installing.

1 is a configuration diagram showing an air conditioner according to the prior art, which will be described here as a separate type air conditioner.

The conventional air conditioner includes a compressor 12 for compressing a refrigerant at a high temperature and a high pressure, a condenser 14 for exchanging heat of the refrigerant discharged from the compressor 12 with external air, and the condenser ( The expansion valve 16, which expands the refrigerant introduced from 14) and converts the refrigerant into low-temperature and low-pressure refrigerant, and absorbs the heat of the indoor air by exchanging the refrigerant supplied from the expansion valve 16 with the indoor air, thereby providing a comfortable indoor space. And an evaporator 22 to maintain air.

Here, the compressor 12, the condenser 14, and the expansion valve 16 are installed in the outdoor unit 10, and the evaporator 22 is installed in the indoor unit 20 together with the indoor blower 24. Bar, which connects the outdoor unit 10 and the indoor unit 20 between the discharge tube of the expansion valve 16 and the suction tube of the evaporator 22, and the discharge tube of the evaporator 24 and the suction tube of the compressor 12. Refrigerant tubes are provided, and each of the refrigerant tubes is provided with first and second valves 32 and 34 capable of interrupting the circulation of the refrigerant.

Looking at the operation of the air conditioner according to the prior art configured as described above are as follows.

First, when power is applied, the compressor 12 is driven to compress the refrigerant at high temperature and high pressure, and the compressed refrigerant is supplied to the condenser 14 to be in contact with the air introduced by the outdoor blower 18 to release heat. Then, the refrigerant is released to the low-temperature, high-pressure state is expanded to pass through the expansion valve 16 is a low-temperature, low-pressure refrigerant is supplied to the evaporator 22.

In the evaporator 22, the indoor air introduced by the indoor blower 24 is in contact with the surface of the evaporator 22, the heat of the indoor air is transferred to the refrigerant circulating in the evaporator 22, the temperature of the indoor air is Keep it comfortable.

In addition, when the outdoor unit 10 and the indoor unit 20 are separated for reasons such as a previous installation of the air conditioner, the outdoor unit 10 and the outdoor unit 10 after performing the pump-down operation of compressing and storing all refrigerant to the outdoor unit 10 side. Bar is separated by the indoor unit 20, the working sequence is as follows.

First, the first valve 32 is turned off, the compressor 12 is driven to pressurize the refrigerant circulating in the air conditioner to the outdoor unit 10, and then the second valve 34 is turned off to cool the refrigerant. keep it.

After the previous installation of the air conditioner, the first and second valves 32 and 34 are turned on to operate the air conditioner.

However, since the air conditioner according to the prior art has no surplus space on the flow path through which the refrigerant is circulated, when the outdoor unit 10 and the indoor unit 20 are separated, the air conditioner of the outdoor unit 10 required for the pump-down operation for collecting the refrigerant into the outdoor unit 10 is required. There is a problem in that the internal volume is insufficient, the refrigerant is lost when performing the previous installation of the air conditioner, the performance of the air conditioner is reduced.

In addition, when the distance between the indoor unit and the outdoor unit increases, the filling amount of the refrigerant increases, and thus the above problem may be remarkably highlighted because the internal volume of the outdoor unit 10 required for the pump-down operation is further insufficient.

The present invention has been made in order to solve the above problems of the prior art, by providing a container for forming a surplus space on one side of the heat exchanger in which a liquid refrigerant and a gaseous refrigerant at the same time, to achieve a pump-down operation Since the internal volume of the air conditioner increases, the distance between the indoor unit and the outdoor unit is increased, so that the pump-down operation can be performed even if the amount of refrigerant is increased, and a pump-down that can achieve the previous installation of the air conditioner that prevents the refrigerant from being lost It is an object of the present invention to provide an air conditioner equipped with a container.

1 is a configuration diagram showing an air conditioner according to the prior art,

2 is a block diagram of an air conditioner equipped with a container for pumping down according to the present invention;

3 is a perspective view showing a heat exchanger of the air conditioner with a container for pumping down according to the present invention;

4 is a side sectional view showing a container of an air conditioner with a container for pumping down according to the present invention.

<Explanation of symbols on main parts of the drawings>

50: outdoor unit 52: compressor

54: condenser 54a: refrigerant supply / discharge header

54b: Refrigerant pass header 54c: Refrigerant pipe

54d: pin 54e: bulkhead

56 expansion valve 58: outdoor blower

59 container 59a suction tube

59b: discharge pipe 60: indoor unit

62: evaporator 64: indoor blower

82: first valve 84: second valve

Air conditioner equipped with a container for pumping down according to the present invention for solving the above problems is a compressor for compressing the refrigerant to a high temperature, high pressure, a condenser for discharging the heat of the refrigerant supplied from the compressor to the outside, An air conditioner including an expansion valve connected to the discharge pipe of the condenser to reduce the pressure of the refrigerant, and an evaporator connected to the discharge pipe of the expansion valve to absorb the heat of the outside air into the refrigerant, one side of the condenser For the installation of the air conditioner is characterized in that the container is provided to provide a surplus space to compress and store the refrigerant to the outdoor unit side.

Hereinafter, an embodiment of an air conditioner equipped with a container for pumping down according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram showing an air conditioner equipped with a container for pumping down according to the present invention.

The air conditioner having a container for pumping down according to the present invention includes a compressor 52 for compressing a refrigerant at a high temperature and a high pressure, and an outdoor unit in which the refrigerant discharged from the compressor 52 is introduced by an outdoor blower 58. A condenser 54 for contacting air to convert the refrigerant at room temperature and high pressure, an expansion valve 56 for expanding the refrigerant supplied from the condenser 54 to a refrigerant at room temperature and low pressure, and the expansion valve 56 Evaporator 62 for exchanging the refrigerant discharged from the indoor air with the indoor air introduced by the indoor blower 64 to absorb heat in the indoor air, and the outdoor unit 50 installed at one side of the condenser 54. A container 59 is included to allow to increase the internal volume of the container.

Here, the compressor 52, the condenser 54, the expansion valve 56 is installed inside the outdoor unit 50, the evaporator 62 is installed in the indoor unit 60 together with the indoor blower 64. Bar, which connects the outdoor unit 50 and the indoor unit 60 between the discharge pipe of the expansion valve 56 and the suction pipe of the evaporator 62, and the discharge pipe of the evaporator 62 and the suction pipe of the compressor 52. Refrigerant tubes are provided, and each of the refrigerant tubes is provided with first and second valves 82 and 84 capable of interrupting the circulation of the refrigerant.

3 is a perspective view showing a condenser of an air conditioner with a container for pumping down according to the present invention.

The vessel 59 is installed in a heat exchanger constituting the condenser 54. The heat exchanger is opposed to both sides, and the refrigerant supply / discharge header 54a and the refrigerant passage header 54b which are installed vertically in the vertical direction. And a plurality of coolant tubes 54c installed horizontally between the coolant supply / discharge header 54a and the coolant passage header 54b in a horizontal direction and the coolant tubes 54c perpendicular to the coolant tubes 54c. A plurality of fins (54d) for extending the heat transfer area of the, and the container 59 is provided on one side of the refrigerant passage header 54b.

Here, the coolant supply / discharge header 54a is formed in a long cylindrical shape in an up and down direction, and an inlet for supplying a coolant circulating inside the heat exchanger is formed at an upper side, and a discharge port for discharging the coolant is formed at a lower side.

In addition, the inner wall of the refrigerant supply / exhaust header 54a and the refrigerant passage header 54b are provided so that a plurality of partition walls 54e partitioning the inside of the refrigerant are spaced apart from each other so that the refrigerant supplied to the inlet is a refrigerant pipe 54c. ) Is reciprocated a plurality of times in the left and right directions and flows downward to be discharged to the outside through the discharge port.

4 is a side sectional view showing a container of an air conditioner with a container for pumping down according to the present invention.

The container 59 is installed between the partition wall 54e and the partition wall 54e partitioning the inside of the refrigerant passage header 54b up and down, and an intake pipe 59a is formed at an upper side thereof, and a discharge pipe 59b at a lower side thereof. The coolant which is formed and moved downward is introduced into the container through the suction pipe 59a and then discharged back to the refrigerant passing header 54b along the discharge pipe 59b.

At this time, the introduced refrigerant is gathered in the upper side of the container due to the characteristics of the gas to rise in accordance with the state of the gas state, the liquid refrigerant is collected in the lower side discharge pipe 59b formed only in the liquid state of the lower side of the container It is circulated back through the refrigerant passing through the header (54b).

Therefore, the inside of the container 59 is filled with only the refrigerant in the gas state while the air conditioner is in operation, and when the pump down operation is performed, the liquid refrigerant compressed by the compressor 52 is filled in the pump down operation. More refrigerant can be stored.

Looking at the operation of the air conditioner provided with a container for pumping down according to the present invention configured as described above are as follows.

First, when power is applied, the compressor 52 is driven to compress the refrigerant into a high temperature and high pressure refrigerant, and the compressed refrigerant flows into the condenser 54 and the external air introduced by the outdoor blower 58. Heat is transferred to the liquid refrigerant at room temperature and high pressure.

At this time, the refrigerant compressed by the compressor 52 flows into the condenser 54 as a refrigerant in a gaseous state and heat exchanges with external air so that a liquid refrigerant and a gaseous refrigerant coexist. It is introduced into the interior of the vessel 59 installed on one side of the condenser 54.

The refrigerant introduced into the container 59 collects only the liquid refrigerant in the lower side and is discharged back to the refrigerant passing header 54b along the discharge pipe 59b of the container 59, and the refrigerant in the gaseous state is the container 59. It is not circulated at the top of the.

Thereafter, the refrigerant expands in volume as it passes through the expansion valve 56 and is converted into a refrigerant having a low temperature and low pressure. The refrigerant absorbs heat from the indoor air introduced by the indoor blower 64 while passing through the evaporator 62. Afterwards it is circulated again into the compressor 52 to form a refrigeration cycle.

In addition, when the air conditioner is previously installed, the indoor unit 60, the outdoor unit 50, and the refrigerant pipe must be separated first, and thus, a pump-down operation of compressing and storing all refrigerant circulated in the refrigeration cycle in the outdoor unit 50 should be performed. do.

The pump down operation is connected to the discharge pipe of the expansion valve 56 to turn off the first valve 82 installed on the pipe connected to the outside of the outdoor unit 50 to prevent the refrigerant from entering the indoor unit 60 After the compressor 52 is driven to compress both the outdoor unit 50, the indoor unit 60, and the refrigerant on the refrigerant pipe into the outdoor unit 50, the second valve 84 is turned off to store the refrigerant.

At this time, since the vessel 59 is filled with a refrigerant in a gaseous state when the air conditioner is normally operated, a larger amount of refrigerant may be stored when the liquid refrigerant injected by the compressor 52 is introduced.

As a result, since the distance between the outdoor unit 50 and the indoor unit 60 increases, the amount of refrigerant circulating inside the air conditioner can be easily pumped down, so the air conditioner is separated into the outdoor unit 50 and the indoor unit 60. The loss of the refrigerant can be prevented when the operation is performed.

The air conditioner provided with a container for pumping down according to the present invention configured as described above is provided with a container that forms a surplus space on one side of the condenser, thereby increasing the internal volume of the outdoor unit to separate the air conditioner into the outdoor unit and indoor unit. The efficiency of the pump-down operation for the improved efficiency is achieved to achieve the previous installation of the air conditioner to prevent the loss of refrigerant.

Claims (5)

A compressor for compressing the refrigerant to a high temperature and a high pressure; A condenser for dissipating heat of the refrigerant supplied from the compressor to the outside; An expansion valve connected to the discharge pipe of the condenser to reduce the pressure of the refrigerant; An air conditioner connected to a discharge pipe of the expansion valve, the air conditioner including an evaporator to absorb heat of external air into the refrigerant; One side of the condenser is provided with a container for the pump down, characterized in that the container for providing a surplus space for compressing and storing the refrigerant to the outdoor unit for the previous installation of the air conditioner. The method of claim 1, The condenser includes a plurality of refrigerant pipes forming a flow path for heat exchange while the refrigerant passes therethrough; A refrigerant supply / discharge header installed at one side of the refrigerant pipe to supply the refrigerant to the refrigerant pipe or to discharge the refrigerant of the refrigerant pipe; A refrigerant passing header installed at the other side of the refrigerant pipe, to which the refrigerant supply / discharge header is not connected, for communicating the refrigerant pipe; A plurality of fins installed in the coolant pipe and installed perpendicular to the coolant pipe to increase a heat transfer area of the coolant pipe; The air conditioner is provided with a container for pumping down, characterized in that the container is provided on one side of the refrigerant passage header to provide a surplus space. The method of claim 2, The refrigerant supply / exhaust header and the refrigerant passage header may be formed on each inner wall such that a partition wall partitioning the inside of the refrigerant supply / discharge header is formed on the inner wall of the refrigerant supply / discharge header and the partition wall formed on the inner wall of the refrigerant passage header is spaced apart from each other. Air conditioner equipped with a container for pumping down, characterized in that a plurality installed. The method according to claim 1 or 2, The vessel is an air conditioner having a vessel for pumping down, characterized in that installed between the partition wall and the partition wall of the refrigerant passage header. The method according to claim 1 or 2, The container is formed in a case shape to form a predetermined space, the inlet pipe is connected to one side of the refrigerant passage header at one side of the upper side of the refrigerant supply header, the lower portion of the refrigerant flows back to the refrigerant passage header Air conditioner having a container for pumping down, characterized in that the discharge pipe is formed.