JP2003287243A - Condensing unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a condensing unit having a service valve for performing drain treatment at low cost. <P>SOLUTION: In this condensing unit for fixing a gas pipe side service valve to connect a high-pressure gas pipe and a liquid pipe side valve to connect a low-pressure liquid pipe from the gas pipe to the unit via a fitting plate, the fitting plate is horizontally disposed, both service valves are fitted to this fitting plate, the liquid pipe side service valve is fitted at the position higher than the gas pipe side service valve. Even when drain is deposited on the liquid pipe side service valve, the drain flows to the gas pipe side service valve at the lower position, and naturally evaporated by the heat of the valve. Drain treatment is performed at low cost without providing any heat insulating material or members to receive drain. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a condensing unit having a plurality of service valves mounted via mounting plates.

[0002]

2. Description of the Related Art As a conventional technique in which a plurality of service valves are attached to a unit, there is one disclosed in JP-A-6-74492, which is a side portion of an outdoor unit of a separation type air conditioner. Since multiple service valves are attached to the valve, especially the service valve on the liquid pipe side, which is connected to the low-pressure liquid pipe, will cool and cause condensation, so the drain cover is formed on the valve cover that covers these valves. The drain is guided from the receiving portion into the outdoor unit so that it does not drip outside the unit.

There is also a valve in which the valve itself is covered with a heat insulating material having a shape along the outer shape of the valve and a valve cover so that the valve itself is less likely to be condensed.

[0004]

In the device described in the above publication, it is necessary to make a valve cover corresponding to each service valve, which increases the cost by this service cover and increases inventory management. The need also arises.

Further, in the case where the heat insulating material is arranged inside the cover, there is a problem that the cost is increased because the heat insulating material having this complicated shape is formed.

The present invention provides a condensing unit equipped with a service valve that can perform drain processing at low cost.

[0007]

In order to solve the above-mentioned problems, the present invention comprises a condenser for condensing a compressed refrigerant from a compressor and a refrigerant circuit connected to a utilization side unit, through a mounting plate. In a condensing unit, which is fixed to the unit and includes a gas pipe side service valve for connecting a high pressure gas pipe, and a liquid pipe side service valve for connecting a liquid pipe of a lower pressure than the gas pipe, the mounting plate is horizontal. And the liquid pipe side service valve is mounted at a position higher than the gas pipe side service valve.

Further, the mounting plate is formed in a step shape.

Further, a condenser for condensing the compressed refrigerant from the compressor, and a gas pipe for connecting a high-pressure gas pipe fixed to the unit via a mounting plate to form a refrigerant circuit connected to the utilization side unit. Side service valve, in a condensing unit equipped with a liquid pipe side service valve for connecting a liquid pipe at a pressure lower than that of the gas pipe, the mounting plate is arranged obliquely, and at a high position of the mounting plate, A service valve on the liquid pipe side is installed, and the service valve on the gas pipe side is mounted at a position lower than this valve.

Further, a condenser for condensing the compressed refrigerant from the compressor is connected to the utilization side unit by a pipe to form a refrigerant circuit, and is connected to a high pressure gas pipe fixed to the unit through a mounting plate. In the condensing unit, a gas pipe side service valve and a liquid pipe side service valve for connecting a liquid pipe having a pressure lower than that of the gas pipe are arranged in a horizontal portion and an inclination extending obliquely upward from the horizontal portion. The liquid pipe side service valve is attached to the inclined portion, and the gas pipe side service valve is attached to the horizontal portion.

Further, the mounting plate is made of a stainless material.

The contact surface between the mounting plate and both service valves is resin-coated.

Further, at the position where the liquid pipe side service valve of the mounting plate is mounted, the plate shape is such that the center side is low and the peripheral side is high.

Further, the plate shape of the mounting plate is formed by drawing.

Further, the plate shape of the mounting plate is formed by bending the periphery upward and closing the bent connection portion with hot melt.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings.

1 to 6 show an embodiment of the present invention.

FIG. 1 is a side view showing the vicinity of a service valve of a condensing unit of the present invention, which is a first embodiment. Reference numeral 1 shown in this drawing is a liquid pipe side service valve, which is connected to a low pressure liquid pipe, and is bolted to a mounting plate described later by a flange 1A. Reference numeral 2 is a gas pipe side service valve, to which a high pressure gas pipe is connected, and which is bolted to a mounting plate by a flange 2A.

Reference numerals 3 and 4 denote mounting plates, which are arranged horizontally as shown in the drawing, and are set so that the mounting plate 3 is located higher than the mounting plate 4. These mounting plates 3 and 4 may be separate bodies as shown in FIG. 1 or may be integrated although not shown. The mounting plates 3 and 4 are mounted on a casing of a condensing unit (not shown).

The condensing unit includes a refrigerant compressor, a condenser for condensing the refrigerant from the compressor,
Further, a blower for sending outside air to the condenser is provided inside the casing.

This condensing unit is connected to a utilization side unit equipped with a pressure reducer and an evaporator, a high pressure gas pipe and a low pressure liquid pipe, and is connected from a refrigerant compressor to a condenser, a pressure reducer and an evaporator. , And a refrigerant circuit in which the refrigerant circulates in the order of the refrigerant compressor.

In the condensing unit having such a structure, when the condensing unit is operated, the liquid pipe side service valve 1 is cooled by the circulating refrigerant, so that the temperature of the air around the valve lowers below the dew point temperature. Drain tends to adhere and the service valve 2 on the gas pipe side has a high temperature.

When the drain attached to the service valve 1 exceeds a predetermined amount, the drain flows to the lower mounting plate 4 side. The drain flowing to the lower mounting plate 4 is heated by the gas pipe side service valve 2 and the mounting plate 4 heated by the heat of the gas pipe side service valve 2 and spontaneously evaporates. For this reason, there is no need for a separately prepared member such as a heat insulating material or a member for receiving drainage, and only by devising the arrangement of the valves 1 and 2 and the shapes of the mounting plates 3 and 4,
Drain processing can be performed at low cost.

Further, by forming the mounting plates 3 and 4 from a stainless steel material, it is possible to prevent rusting even when wet with a drain, and to prevent the appearance from being deteriorated and the strength from being deteriorated by rusting as much as possible. can do.

Further, by coating the contact surface between the mounting plate 3 and the service valve, for example, the contact surface of the flange 1A with resin, heat conduction to the mounting plate 3 of the service valve 1 is suppressed and the mounting plate 3 is attached. Drain can be prevented from adhering. As a result, the drainage can be concentrated on the service valve 1 and the draining process can be facilitated.

FIG. 2 is a side view showing the second embodiment,
The same components as those in FIG. 1 are designated by the same reference numerals and the description thereof is omitted. Reference numeral 5 is a mounting plate formed in a staircase shape, in which the liquid pipe side service valve 1 is mounted at a high position and the gas pipe side service valve 2 is mounted at a low position. Further, 6 is a casing such as a bottom plate of the condensing unit.

In the condensing unit configured as described above, the positions of the valves 1 and 2 can be set high and low with one mounting plate 5, so that the mounting plate 5 can be manufactured and the casing 5 of the mounting plate 5 can be mounted. Can be easily installed.

FIG. 3 is a side view showing a third embodiment,
The same components as those in FIGS. 1 and 2 are designated by the same reference numerals, and the description thereof will be omitted. 7 is the above-mentioned mounting plate arranged obliquely, and the liquid pipe side service valve 1 is mounted at a high position of this mounting plate,
The gas pipe side service valve 2 is attached to the lower position of the attachment plate 7.

In the condensing unit constructed as described above, the drain attached to the liquid pipe side service valve 1 smoothly flows through the oblique mounting plate 7, is guided to the gas pipe side service valve 2 side, and The heat of the side service valve 2 causes spontaneous evaporation.

Therefore, according to the present invention, since the drain can be smoothly guided to the valve 2 side by the oblique mounting plate 7, the drain process can be performed quickly.

FIG. 4 is a side view showing a fourth embodiment,
The same components as those in FIGS. 1 to 3 are designated by the same reference numerals, and the description thereof will be omitted. Reference numeral 8 denotes a mounting plate, which includes a horizontal portion 8A and an inclined portion 8B extending obliquely upward from the horizontal portion. The liquid pipe side service valve 1 is attached to the inclined portion 8B, and the gas pipe side service valve 2 is attached to the horizontal portion 8A.

In the condensing unit thus constructed, the drain attached to the liquid pipe side service valve 1 is smoothly guided to the gas pipe side service valve 2 side, and a large amount of drain is attached to the service valve 2 Even if it flows to the side, it is held in the horizontal portion 8A and easily evaporates spontaneously in this portion, so that the drain is prevented from dripping outside the mounting plate 8 as much as possible.

FIG. 5 is an explanatory view showing the fifth embodiment.
The same components as those in FIGS. 1 to 4 are designated by the same reference numerals, and the description thereof will be omitted. (A) shows the side surface, (b) shows the side surface seen from a different angle, 9 is a mounting plate, which is formed in a stepwise manner, and has mounting portions 9A, 9B to which the service valve 1 is mounted. , The central side 9C is low and the peripheral side 9D is high. 9E is a water channel formed by slightly lowering toward the lower step.

In the condensing unit thus constructed, the drain attached to the service valve 1 at the mounting portion 9A formed in the dish shape flows to the lower service valve 2 side through the water passage 9E. Further, since the mounting portion 9B of the service valve 2 is also formed in a dish shape, the drain collects in this portion. Since this portion is heated by the heat of the service valve 2, the drain accumulated in this portion easily evaporates.

Also, the mounting portions 9A, 9 formed in a dish shape
When B is formed by drawing, it can be formed at a lower cost than when a forming method such as press forming is used.

Further, FIG. 6 is a perspective view showing a sixth embodiment, and 10 is a fitting, which is not shown, in which a service valve on the liquid pipe side or a service valve on the gas pipe side is mounted on the mounting portion 10A. is there.

The fixture 10 is bent upward around the periphery 10B, and the connection portion of the bent portion is closed with hot melt 10C. With such a structure, the mounting plate 10 is formed in a dish shape.

When the plate shape of the fixture 10 is formed in this way, the connecting portion between the peripheral portions 10B bent upward is
Since the hot melt 10C, which can easily fill the voids, is closed, the gap in this portion can be surely closed to prevent the drain leakage.

[0039]

As described above, according to the invention described in claim 1, a condenser for condensing the compressed refrigerant from the compressor and a refrigerant circuit are connected to the utilization side unit,
In a condensing unit having a gas pipe side service valve fixed to the unit via a mounting plate for connecting a high pressure gas pipe, and a liquid pipe side service valve for connecting a liquid pipe of a lower pressure than the gas pipe, Since the mounting plate is arranged horizontally and the service valve on the liquid pipe side is mounted at a position higher than the service valve on the gas pipe side, even if a drain is attached to the service valve on the liquid pipe side, this drain is at a low position. Flows to the gas pipe side service valve side, and spontaneously evaporates due to the heat of the valve. Therefore, according to the present invention, it is possible to perform the drain treatment at low cost without the need for a heat insulating material or a member for receiving the drain.

Further, according to the second aspect of the invention, since the mounting plate is formed in a step shape, the positions of both service valves can be set high and low with one mounting plate, and the mounting plate can be manufactured and manufactured. It is possible to easily attach the mounting plate to the casing.

According to the third aspect of the present invention, in the condensing unit, the mounting plate is arranged obliquely, and the liquid pipe side service valve is provided at a high position of the mounting plate from the mounting position of the valve. Since the gas pipe side service valve was installed in the low position, the drain can be smoothly guided to the valve side by the diagonal mounting plate,
Drain processing can be performed quickly.

According to the invention described in claim 4, in the condensing unit, the mounting plate has a horizontal portion and an inclined portion extending obliquely upward from the horizontal portion, and the inclined portion has the liquid pipe side. Since the service valve is attached to the gas pipe side service valve in the horizontal portion, the drain attached to the liquid pipe side service valve can be smoothly guided to the gas pipe side service valve side. Moreover, even if a large amount of drain flows to the service valve side on the gas pipe side, it is retained in this horizontal part, and it is easy to spontaneously evaporate in this part, so it is possible to prevent drain from dripping outside the mounting plate as much as possible. it can.

Further, according to the invention of claim 5, since the mounting plate is made of a stainless material, the mounting plate can be prevented from rusting even if it is wet with a drain, and the rusting damages the appearance and the strength. Can be prevented as much as possible.

According to the invention of claim 6, since the contact surface between the mounting plate and both service valves is resin-coated, heat conduction to the liquid pipe side service valve is suppressed, and the mounting plate. Drain can be prevented from adhering to the. As a result, the attachment of drain can be concentrated on the service valve on the liquid pipe side, and the drain process can be facilitated.

Further, according to the invention described in claim 7, at the position where the liquid pipe side service valve of the mounting plate is mounted, a dish shape having a lower center side and a higher peripheral side is formed, and a passage to the gas pipe side service valve is formed. Since this is formed, the drain attached to the liquid pipe side service valve can be smoothly guided to the gas pipe side service valve.

Further, according to the invention described in claim 8, since the plate shape of the mounting plate is formed by drawing, the plate shape of the mounting plate can be molded at low cost.

According to the ninth aspect of the present invention, the plate shape of the mounting plate is bent upward at the periphery, and the bent connection portion is closed with hot melt capable of easily filling the void. Since it is formed, it is possible to surely close the gap in this portion and prevent drain leakage from this portion.

[Brief description of drawings]

FIG. 1 is a side view showing the vicinity of a service valve of a condensing unit of the present invention.

FIG. 2 is a side view showing a second embodiment of the present invention.

FIG. 3 is a side view showing a third embodiment of the present invention.

FIG. 4 is a side view showing a fourth embodiment of the present invention.

FIG. 5 is an explanatory diagram showing a fifth embodiment of the present invention.

FIG. 6 is a perspective view of a mounting plate showing a sixth embodiment of the present invention.

[Explanation of symbols]

1 Liquid pipe side service valve 2 Gas pipe side service valve 3 Mounting plate 4 Mounting plate 5 Mounting plate 7 Mounting plate 8 Mounting plate 8A horizontal part 8B inclined part 9 Mounting plate 9A mounting part 10 Mounting plate 10B surroundings 10C hot melt

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shinji Sekine             2-5-3 Keihan Hondori, Moriguchi City, Osaka Prefecture             Within Yo Denki Co., Ltd. (72) Inventor Shinichi Ishigami             2-5-3 Keihan Hondori, Moriguchi City, Osaka Prefecture             Within Yo Denki Co., Ltd. (72) Inventor, Yoshiyuki Matsubara             2-5-3 Keihan Hondori, Moriguchi City, Osaka Prefecture             Within Yo Denki Co., Ltd. F-term (reference) 3L054 BC01

Claims (9)

[Claims] 1. A condenser for condensing compressed refrigerant from a compressor, and a refrigerant circuit connected to a utilization side unit,
In a condensing unit having a gas pipe side service valve fixed to the unit via a mounting plate for connecting a high pressure gas pipe, and a liquid pipe side service valve for connecting a liquid pipe of a lower pressure than the gas pipe, A condensing unit, wherein the mounting plate is arranged horizontally and the liquid pipe side service valve is mounted at a position higher than the gas pipe side service valve. 2. The condensing unit according to claim 1, wherein the mounting plate is formed stepwise. 3. A condenser for condensing the compressed refrigerant from the compressor, and a refrigerant circuit connected to the utilization side unit,
In a condensing unit having a gas pipe side service valve fixed to the unit via a mounting plate for connecting a high pressure gas pipe, and a liquid pipe side service valve for connecting a liquid pipe of a lower pressure than the gas pipe, The condensing is characterized in that the mounting plate is arranged obliquely, the liquid pipe side service valve is mounted at a high position of the mounting plate, and the gas pipe side service valve is mounted at a position lower than the valve. unit. 4. A condenser for condensing a compressed refrigerant from a compressor and a pipe connected to a utilization side unit to form a refrigerant circuit, which is fixed to the unit via a mounting plate to connect a high pressure gas pipe. In the condensing unit, a gas pipe side service valve and a liquid pipe side service valve for connecting a liquid pipe having a lower pressure than the gas pipe, the mounting plate is
A horizontal portion and an inclined portion extending obliquely upward from the horizontal portion, wherein the liquid pipe side service valve is attached to the inclined portion and the gas pipe side service valve is attached to the horizontal portion. A condensing unit. 5. The condensing unit according to claim 1, wherein the mounting plate is made of a stainless material. 6. The condensing unit according to claim 1, wherein a contact surface between the mounting plate and both service valves is resin-coated. 7. The condensing unit according to claim 1, wherein the mounting plate has a dish shape in which a central side is low and a peripheral side is high at a position where the liquid pipe side service valve is mounted. . 8. The condensing unit according to claim 7, wherein the plate shape of the mounting plate is formed by drawing. 9. The condensing unit according to claim 7, wherein the plate shape of the mounting plate is formed by bending the periphery upward and closing the bent connection portion with hot melt. .