CN110686331A

CN110686331A - Fluid switching pipeline capable of being switched conveniently, heat exchange device and air conditioning system

Info

Publication number: CN110686331A
Application number: CN201910984609.XA
Authority: CN
Inventors: 周镜明; 何伟光; 郭改革; 梅进忠; 林增权
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2019-10-16
Filing date: 2019-10-16
Publication date: 2020-01-14
Anticipated expiration: 2039-10-16
Also published as: CN110686331B

Abstract

The invention discloses a fluid switching pipeline capable of being switched conveniently, a heat exchange device and an air conditioning system. The fluid switching pipeline comprises a first vertical pipe and a second vertical pipe. The upper parts of the two vertical pipes are connected with a first three-way valve and a second three-way valve which are connected in series, and the lower parts of the two vertical pipes are connected with a third three-way valve and a fourth three-way valve which are connected in series; the two interfaces of the first and fourth three-way valves are used for connecting with the outside, and the two interfaces of the second and third three-way valves are respectively and correspondingly connected with the first and second vertical pipes. According to the invention, different heat exchange media flowing through the heat exchange device can be conveniently switched by the two pairs of three-way valves arranged up and down, so that the function is enhanced. The device can be installed according to the position of external associated equipment, and the three-way valves above and below the vertical pipe are reasonably switched, so that the optimal heat exchange efficiency of the air and the heat exchange medium in the pipeline can be ensured. And the problems of no interchangeability and high cost caused by a left-type and a right-type heat exchange devices in the prior art are solved.

Description

Fluid switching pipeline capable of being switched conveniently, heat exchange device and air conditioning system

Technical Field

The invention relates to the technical field of refrigeration, in particular to a left-right universal fluid switching pipeline capable of conveniently switching heat exchange media, a heat exchange device with the fluid switching pipeline and an air conditioning system with the heat exchange device.

Background

At present, a central air-conditioning system mostly adopts two heat exchange devices of a surface cooler and a steam coil for heat exchange. The surface cooler uses water as a medium for heat exchange, and the steam coil uses steam as a medium for heat exchange. The surface air cooler can be used for refrigerating and heating of the air conditioning system, the steam coil is only used for heating of the air conditioning system, and the heating effect is superior to that of the surface air cooler. As shown in fig. 1 and 2, the heat exchanger includes a heat exchanger main body 01, wherein pipes for circulating a heat exchange medium are bent, and generally, the pipes are divided into a front row and a rear row of pipe orifices extending out of the left side or the right side of the heat exchanger main body and respectively communicated with two vertical pipes. The external interface 02 of one vertical pipe is arranged above the external interface 03 of the other vertical pipe. If one external interface inputs media, the other external interface can output media. The medium flow direction of the heat exchange device is generally set on the principle of improving the heat exchange efficiency as much as possible relative to the flow direction of the heat exchange air, so that the water flow direction of the surface cooler is downward inlet and upward outlet; the airflow direction of the steam coil is upward inlet and downward outlet.

When the heat exchanger is assembled, the two vertical pipes are positioned at the left side or the right side of the heat exchanger main body, and the heat exchanger can be divided into a left type heat exchanger or a right type heat exchanger. The vertical pipe with the external interface 02 at the upper part is arranged at the front, the vertical pipe with the external interface 03 at the lower part is arranged at the rear, and if the two vertical pipes are positioned at the left side of the heat exchange device main body 01, a left-type heat exchange device is defined, as shown in fig. 1 and 2; if the two vertical pipes are positioned at the right side of the heat exchange device main body 01, the heat exchange device is defined as a right type heat exchange device, as shown in fig. 3 and 4. To the left formula or the right formula heat transfer unit of different mounting structure, the external interface height of vertical pipeline sets up differently, and prior art refrigerating unit's relevant part all is with left formula or right formula heat transfer unit one-to-one. For example, the perforated panel, the water pan, the external interface of the vertical pipe and the like need to be distinguished into a left type or a right type, and no interchangeability exists. Therefore, the specifications of the matched and corresponding parts are various, production data needs to be switched for many times in the production process, and the left and right type parts cannot be universally installed, so that the production efficiency is reduced. And the gas-liquid medium of the heat exchange device can not be conveniently switched, and the function is single.

Therefore, how to overcome the defects that the left and right structures of the existing heat exchange device cannot be universally installed with a matching system and the production efficiency is low; the defect that the gas-liquid medium can not be switched and the function is single is a problem to be solved urgently in the industry.

Disclosure of Invention

The invention aims to solve the problems that the left and right structures of the existing heat exchange device cannot be universally installed with a matching system, and the production efficiency is low; the technical problems that gas-liquid media cannot be switched and the functions are single are solved, and the fluid switching pipeline, the heat exchange device and the air conditioning system are provided, wherein the left and right structures of the heat exchange device can be universally installed with a matched system, the production efficiency is high, and the gas-liquid media are convenient to switch.

The invention provides a fluid switching pipeline which comprises a first vertical pipe and a second vertical pipe. The upper parts of the two vertical pipes are connected with a first three-way valve and a second three-way valve which are connected in series, and the lower parts of the two vertical pipes are connected with a third three-way valve and a fourth three-way valve which are connected in series; the two interfaces of the first and fourth three-way valves are used for connecting with the outside, and the two interfaces of the second and third three-way valves are respectively and correspondingly connected with the first and second vertical pipes.

Preferably, the three-way valve can be an automatic three-way ball valve.

Preferably, a gas release valve can be arranged on the connecting pipe between the first three-way valve and the second three-way valve.

Preferably, a water discharging bolt can be arranged on the lower side of the connecting pipe between the third three-way valve and the fourth three-way valve.

The invention provides a heat exchange device which comprises a heat exchange device main body, wherein a fluid switching pipeline is arranged on one side of the heat exchange device main body.

The invention also provides an air conditioning system with the heat exchange device.

After the heat exchange device of the fluid switching pipeline is installed in the unit, the inlet and outlet positions of fluid media, namely liquid or gas, can be conveniently switched through the two three-way valves which are arranged on the upper part and the lower part of the two vertical pipes and are connected in series, so that the heat exchange media flowing through the heat exchange device can be switched. The heat exchange device adopts a liquid medium during refrigeration, so that a better refrigeration effect is achieved; and a gaseous medium is adopted during heating, so that a heating effect superior to that of a common surface cooler is achieved, and the function is enhanced. The heat exchange device adopting the fluid switching pipeline can be conveniently installed according to the position of a pipeline for supplying fluid media from the outside, and liquid can enter and exit from the top or gas can enter and exit from the bottom only by reasonably switching four sets of three-way valves on the vertical pipe, and heat exchange media can enter from a rear pipeline on the windward side of the heat exchange device and can be discharged from a front pipeline. The optimal heat exchange efficiency of the wind and the heat exchange medium in the pipeline can be ensured by switching. The problems of no interchangeability and high production cost caused by the left-type and right-type heat exchange devices in the prior art are also solved.

Drawings

FIG. 1 is a front view of a prior art left heat exchange unit;

FIG. 2 is a perspective view of the rear projection of FIG. 1;

FIG. 3 is a front view of a prior art right heat exchange apparatus;

FIG. 4 is a perspective view of the rear projection of FIG. 3;

FIG. 5 is a schematic view of an embodiment of a fluid switching conduit of the present invention;

FIG. 6 is a schematic perspective view of an embodiment of a heat exchange apparatus of the present invention;

FIG. 7 is a front view of an embodiment of a heat exchange apparatus of the present invention;

FIG. 8 is a cross-sectional view taken along line A-A of FIG. 7;

fig. 9 is a schematic view of a flow path of a heat exchange medium when the heat exchange device of the present invention is in operation.

Wherein, 1, 2-the first, the second three-way valve; 3. 4-third, fourth three-way valves; 5-a heat exchange device body;

6. 7-first and second standpipes; 8, a front row of heat exchange pipelines in the heat exchange device main body; 9-rear row heat exchange pipes in the main body of the heat exchange device; 10. 11-a first and a second connector externally connected with the first three-way valve; 12. 13-a third interface and a fourth interface externally connected with a fourth three-way valve; 14-a purge valve; 15-water discharging bolt.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and examples.

Referring to fig. 5, a fluid switching pipeline for a heat exchanger according to the present invention includes a first vertical pipe 6 and a second vertical pipe 7. The upper parts of the two vertical pipes are connected with a first three-way valve 1 and a second three-way valve 2 which are connected in series, and the lower parts of the two vertical pipes are connected with a third three-way valve 3 and a fourth three-way valve 4 which are connected in series. The two-three-way valve is connected in series by a pipeline, and two interfaces of the first three-way valve 1 at the upper part and the fourth three-way valve 4 at the lower part are respectively used for connecting a circulation pipeline of a heat exchange medium to the outside; one of the two ports of the second three-way valve 2 and the third three-way valve 3 is connected with the first vertical pipe 6, and the other port is connected with the second vertical pipe 7.

In this embodiment, the three-way valve can be an automatic three-way ball valve, that is, the three-way valve can rotate to control the communication direction of the ball valve through a motor connected with a ball valve core of the three-way valve, so as to control the flow direction of the heat exchange medium flowing through the three-way valve. When the first three-way valve 1 is opened to the left, the first connection 10 of the valve is opened, the second connection 11 is closed, the medium entering the first connection 10 can enter the second three-way valve 2 through the first three-way valve 1, and the medium entering the second connection 11 cannot pass through the first three-way valve 1. Similarly, the second three-way valve 2 can control the medium flowing through the first three-way valve 1 to be connected with the first vertical pipe 6 or the second vertical pipe 7 through the opening direction of the ball valve. Thereby realizing the switching of the fluid medium flowing into the heat exchange device and the switching of the flow direction of the first vertical pipeline and the second vertical pipeline. A bleed valve 14 is also provided on the connecting line between the first three-way valve 1 and the second three-way valve 2, for venting the gas medium in the heat exchanger if necessary. A water discharging bolt 15 is arranged on the lower side of a connecting pipe between the third three-way valve 3 and the fourth three-way valve 4 and is used for emptying liquid media in the heat exchange device when needed.

As shown in fig. 6 and 7, the present invention provides a heat exchange device, which includes a heat exchange device main body 5, and a fluid switching pipe is provided at one side-right side of the heat exchange device main body. Referring to fig. 8, the first standpipe 6 of the fluid switching conduit is butted against a front row of heat exchange conduit ports 8 extending out of the right side of the heat exchange apparatus body 5, and the second standpipe 7 is butted against a rear row of heat exchange conduit ports 9 extending out of the right side of the heat exchange apparatus body 5.

The gas and liquid medium switching of the heat exchange device is as follows: with reference to fig. 6 and 7, the heat exchanger is installed in the unit, and the wind direction is a positive wind direction, i.e. the wind direction entering from the plane of the heat exchanger main body 5. When the external environment is hot, the heat exchange device performs a refrigeration function, and the medium flowing through the heat exchange device is a liquid medium, so that a better refrigeration effect is realized. The associated automatic three-way valve is adjusted so that the liquid medium flows through the third port 12 in the lower part of the standpipe → the second standpipe 7 → the main body 5 of the heat exchange device → the first standpipe 6 → the first port 10 in the upper part of the standpipe. If the external environment is suddenly cooled or the season changes, the unit needs to perform a stronger heating function, the heat exchange medium of the unit needs to be switched into a gaseous medium by the liquid medium, and the four three-way valves are controlled to rotate simultaneously, so that the gas medium flows through the second interface 11 on the upper part of the vertical pipe → the second vertical pipe 7 → the heat exchange device main body 5 → the first vertical pipe 6 → the fourth interface 13 on the lower part of the vertical pipe to be output. Thereby, the switching of different media flowing through the heat exchange device is realized, and the refrigeration function is switched to the heating function. If the heat exchange device needs to be changed from heating to cooling, on the contrary, the opening direction of the ball valve can be controlled through the motor, and then the heat exchange medium is switched to realize the purpose. According to the principle of 'liquid enters from bottom to top' or 'gas enters from bottom to top', the liquid medium or the gas medium enters from the rear heat exchange pipeline on the windward side of the heat exchange device body and then is discharged from the front heat exchange pipeline on the windward side of the heat exchange device body, and therefore the optimal heat exchange efficiency of wind and the heat exchange medium in the pipeline is guaranteed.

The functional forms of the heat exchange device of the invention are shown in table 1 in combination with fig. 9. In fig. 7, the wind entering the plane of the heat exchanger main body 5 is set to be in the positive wind direction, and the wind blowing forward from the back is set to be in the reverse wind direction.

TABLE 1

From the above, the opening and closing channels of the four three-way valves can be controlled by the computer, so that the circulation path of the heat exchange medium in the heat exchange device is controlled, and the switching of the four functional forms is realized. Can realize heat transfer medium's switching, can also realize the switching of first, second standpipe flow direction. The invention also provides an air conditioning system with the heat exchange device.

After the heat exchange device of the fluid switching pipeline is installed in the unit, the inlet and outlet positions of fluid media, namely liquid or gas, can be conveniently switched through the two three-way valves which are arranged on the upper part and the lower part of the two vertical pipes and are connected in series, so that the switching of different heat exchange media flowing through the heat exchange device is realized, and the function is enhanced. The heat exchange device of the fluid switching pipeline can be installed according to the position of a pipeline for supplying fluid media from the outside, and the optimal heat exchange efficiency of wind and the heat exchange media in the pipeline can be ensured as long as the four sets of three-way valves on the upper part and the lower part of the vertical pipe are reasonably switched. The problems of no interchangeability and high cost caused by the left-type and right-type heat exchange devices in the prior art are also solved.

The above examples are intended only to illustrate specific embodiments of the present invention. It should be noted that, for a person skilled in the art, several modifications and variations can be made without departing from the inventive concept, and these modifications and variations shall fall within the protective scope of the present invention.

Claims

1. A fluid switching pipeline comprises a first vertical pipe and a second vertical pipe, and is characterized in that the upper parts of the two vertical pipes are connected with a first three-way valve and a second three-way valve which are connected in series, and the lower parts of the two vertical pipes are connected with a third three-way valve and a fourth three-way valve which are connected in series; the two interfaces of the first and fourth three-way valves are used for connecting with the outside, and the two interfaces of the second and third three-way valves are respectively and correspondingly connected with the first and second vertical pipes.

2. A fluid switching conduit according to claim 1, wherein said three-way valve is an automatic three-way ball valve.

3. A fluid switching conduit according to claim 1 wherein the connecting line between said first and second three-way valves is provided with a bleed valve.

4. The fluid switching conduit as claimed in claim 1, wherein a connection pipe between the third three-way valve and the fourth three-way valve is provided with a drain bolt.

5. A heat exchange device comprising a heat exchange device body, characterized in that one side of the heat exchange device body is provided with a fluid switching conduit as claimed in any one of claims 1 to 4.

6. An air conditioning system comprising the heat exchange device of claim 5.