CN209926547U - Efficient and energy-saving control system of combined air conditioning unit based on single cold source - Google Patents
Efficient and energy-saving control system of combined air conditioning unit based on single cold source Download PDFInfo
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- CN209926547U CN209926547U CN201920720858.3U CN201920720858U CN209926547U CN 209926547 U CN209926547 U CN 209926547U CN 201920720858 U CN201920720858 U CN 201920720858U CN 209926547 U CN209926547 U CN 209926547U
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Abstract
The utility model discloses a high-efficiency energy-saving control system of a combined air conditioning unit based on a single cold source, which comprises an equipment part, a pipeline for connecting each equipment and a valve part; the equipment part comprises a refrigeration host, a fan coil for cooling and a fresh air unit for dehumidification; the pipe and valve portion includes: the system comprises a coil check valve, a coil adjusting valve, a secondary adjusting valve, a fresh air check valve, a fresh air return valve, a fresh air adjusting valve, a return water adjusting valve, a bypass valve and pipelines for connecting all devices and valves. This scheme makes the refrigeration host computer need not to produce two kinds of refrigerated water. The chilled water supply of the dehumidification system and the cooling system is reasonably distributed through valve adjustment. The purpose of meeting different requirements of two tasks of temperature reduction and dehumidification on the temperature of the chilled water under the condition of a single cold source is achieved.
Description
Technical Field
The utility model belongs to the technical field of the air conditioner, concretely relates to combination air conditioning unit high efficiency energy saving control system based on single cold source.
Background
In a conventional central air-conditioning system, in order to improve the operating efficiency of the system and cool multipurpose medium-temperature chilled water, low-temperature chilled water is needed when dehumidification is required. The load for dehumidification only accounts for 20-30% of the total load, and in order to meet the overall use requirement of the air conditioner, a user has to uniformly adopt a low-temperature water mode for a host with a single cold source, or adopt two air conditioning systems, or use a special host or an air conditioning unit, so that the system efficiency is low, the system complexity is increased, and the cost is too high.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem provide a combination air conditioning unit high efficiency energy saving control system based on single cold source, utilize the used low temperature refrigerated water return water of dehumidification system to supply water as the medium temperature refrigerated water of cooling usefulness. The refrigeration main machine does not need to produce two types of chilled water. The chilled water supply of the dehumidification system and the cooling system is reasonably distributed through valve adjustment. The purpose of meeting different requirements of two tasks of temperature reduction and dehumidification on the temperature of the chilled water under the condition of a single cold source is achieved.
The utility model provides a technical problem adopt following technical scheme to realize: a high-efficiency energy-saving control system of a combined air conditioning unit based on a single cold source comprises an equipment part, a pipeline and a valve part, wherein the pipeline and the valve part are used for connecting all equipment; the equipment part comprises a refrigeration host, a fan coil for cooling and a fresh air unit for dehumidification; the pipe and valve portion includes: the system comprises a coil check valve, a coil adjusting valve, a secondary adjusting valve, a fresh air check valve, a fresh air return valve, a fresh air adjusting valve, a return water adjusting valve, a bypass valve and pipelines for connecting all devices and valves.
Furthermore, the output end of the refrigeration host is connected with a fresh air unit through a fresh air regulating valve, the output end of the fresh air unit is connected with the input end of the fan coil through a secondary regulating valve, and the input end of the fan coil is connected with the output end of the refrigeration host through a coil regulating valve; the output end of the fresh air unit is sequentially connected with a fresh air return valve and a fresh air check valve, the output end of the fan coil is connected with the coil check valve, the output end of the coil check valve and the output end of the fresh air check valve are connected in parallel and then connected with the input end of a return water regulating valve, and the output end of the return water regulating valve is connected with the input end of a refrigeration host.
Furthermore, two ends of the bypass valve are respectively connected with the input end and the output end of the refrigeration host.
Further, the system also comprises a controller and an upper computer, wherein the controller is used for controlling the opening of the valve and the outlet water temperature of the refrigeration host.
Furthermore, the refrigeration host computer can be connected with a plurality of fresh air handling units and fan tube coils.
The utility model discloses the principle as follows:
a refrigeration host can correspond to a plurality of fresh air handling units and a plurality of fan coils. When only one requirement of cooling or dehumidification is available, the system is equivalent to a traditional refrigeration system. When two demands exist, an operator sets the water outlet temperature of the host by judging the cold quantity demands of the fresh air handling unit and the fan coil and adjusts the fresh air adjusting valve and the coil adjusting valve to enable the fresh air handling unit to dehumidify normally, and the freezing return water of the fresh air handling unit is adjusted and distributed through the secondary adjusting valve and the fresh air return water valve to serve as part or all of cold sources of the fan coil. The system can meet the dehumidification requirement of the fresh air handling unit and the cooling requirement of the fan coil pipe simultaneously by reasonably adjusting the water outlet temperature of the main machine and the opening degree of each valve.
The system takes part or all of the freezing backwater of the fresh air handling unit as part or all of the freezing water supply of the fan coil. Therefore, under the condition that the main machine only provides chilled water, two requirements of dehumidification and cooling can be economically met, and the operation efficiency of the central air-conditioning system is improved.
The beneficial effect of this system: the problem of inefficiency when solving under single cold source operating mode, former system low temperature water supplies with simultaneously cooling down and dehumidification, through the utility model discloses can improve central air conditioning system operating efficiency when satisfying two kinds of demands of cooling down and dehumidification.
Drawings
FIG. 1 is a schematic diagram of a connection structure of a single cold source based combined air conditioning unit high-efficiency energy-saving control system;
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
Reference numerals in the drawings of the specification include: the air conditioner comprises a refrigeration host 1, a fan coil 2, a fresh air unit 3, a coil check valve 4, a return water regulating valve 5, a secondary regulating valve 6, a coil regulating valve 7, a fresh air check valve 8, a fresh air return valve 9, a bypass valve 10 and a fresh air regulating valve 11.
Example (b): referring to fig. 1, a high-efficiency energy-saving control system of a combined air conditioning unit based on a single cold source comprises an equipment part, a pipeline for connecting each equipment and a valve part; the equipment part comprises a refrigeration host 1, a fan coil 2 for cooling and a fresh air unit 3 for dehumidification; the pipe and valve portion includes: the system comprises a coil check valve 4, a coil adjusting valve 7, a secondary adjusting valve 6, a fresh air check valve 8, a fresh air return valve 9, a fresh air adjusting valve 11, a return water adjusting valve 5, a bypass valve 10 and pipelines for connecting various devices and valves; the system also comprises a controller and an upper computer, wherein the controller is used for controlling the opening of the valve and the outlet water temperature of the refrigeration host 1.
The output end of the refrigeration host 1 is connected with a fresh air unit 3 through a fresh air regulating valve 11, the output end of the fresh air unit 3 is connected with the input end of a fan coil 2 through a secondary regulating valve 6, and the input end of the fan coil 2 is connected with the output end of the refrigeration host 1 through a coil regulating valve 7; the output end of the fresh air unit 3 is sequentially connected with a fresh air return valve 9 and a fresh air check valve 8, the output end of the fan coil 2 is connected with a coil check valve 4, the output end of the coil check valve 4 and the output end of the fresh air check valve 8 are connected in parallel and then connected with the input end of a return water regulating valve 5, and the output end of the return water regulating valve 5 is connected with the input end of the refrigeration host 1. Two ends of the bypass valve 10 are respectively connected with the input end and the output end of the refrigeration host 1.
When in use:
when two kinds of demands exist, an operator sets the outlet water temperature of the host by judging the cold quantity demands of the fresh air handling unit 3 and the fan coil 2, adjusts the fresh air adjusting valve 11 and the coil adjusting valve 7 to enable the fresh air handling unit 3 to dehumidify normally, and the freezing return water of the fresh air handling unit 3 is adjusted and distributed through the secondary adjusting valve 6 and the fresh air return water valve 9 to serve as a part or all of cold sources of the fan coil 2. The system simultaneously satisfies the dehumidification demand of fresh air handling unit 3 and the cooling demand of fan coil 2 through the aperture of the play water temperature of reasonable regulation host computer and each valve.
In the system, part or all of the freezing backwater of the fresh air unit 3 is used as part or all of the freezing water supply of the fan coil 2. Therefore, under the condition that the main machine only provides chilled water, two requirements of dehumidification and cooling can be economically met, and the operation efficiency of the central air-conditioning system is improved.
The beneficial effect of this system: the problem of inefficiency when solving under single cold source operating mode, former system low temperature water supplies with simultaneously cooling down and dehumidification, through the utility model discloses can improve central air conditioning system operating efficiency when satisfying two kinds of demands of cooling down and dehumidification.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above, and it should be understood by those skilled in the art that the present invention is not limited by the above embodiments, but only by the principle of the present invention, and the present invention can be modified without departing from the spirit and scope of the present invention, and all of the modifications and improvements fall within the scope of the present invention.
Claims (5)
1. The utility model provides a high-efficient energy-saving control system of combination air conditioning unit based on single cold source which characterized in that: comprises an equipment part, a pipeline for connecting each equipment and a valve part; the equipment part comprises a refrigeration host, a fan coil for cooling and a fresh air unit for dehumidification; the pipe and valve portion includes: the system comprises a coil check valve, a coil adjusting valve, a secondary adjusting valve, a fresh air check valve, a fresh air return valve, a fresh air adjusting valve, a return water adjusting valve, a bypass valve and pipelines for connecting all devices and valves.
2. The system of claim 1, wherein the combined air conditioning unit high efficiency energy saving control system based on single cold source is characterized in that: the output end of the refrigeration host is connected with a fresh air unit through a fresh air regulating valve, the output end of the fresh air unit is connected with the input end of a fan coil through a secondary regulating valve, and the input end of the fan coil is connected with the output end of the refrigeration host through a coil regulating valve; the output end of the fresh air unit is sequentially connected with a fresh air return valve and a fresh air check valve, the output end of the fan coil is connected with the coil check valve, the output end of the coil check valve and the output end of the fresh air check valve are connected in parallel and then connected with the input end of a return water regulating valve, and the output end of the return water regulating valve is connected with the input end of a refrigeration host.
3. The system of claim 2, wherein the combined air conditioning unit high efficiency energy saving control system based on single cold source is characterized in that: and two ends of the bypass valve are respectively connected with the input end and the output end of the refrigeration host.
4. The system of claim 1, wherein the combined air conditioning unit high efficiency energy saving control system based on single cold source is characterized in that: the refrigeration system also comprises a controller and an upper computer, wherein the controller is used for controlling the opening of the valve and the outlet water temperature of the refrigeration host.
5. The system of claim 1, wherein the combined air conditioning unit high efficiency energy saving control system based on single cold source is characterized in that: the refrigeration host can be connected with a plurality of fresh air handling units and fan tube coils.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920720858.3U CN209926547U (en) | 2019-05-20 | 2019-05-20 | Efficient and energy-saving control system of combined air conditioning unit based on single cold source |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920720858.3U CN209926547U (en) | 2019-05-20 | 2019-05-20 | Efficient and energy-saving control system of combined air conditioning unit based on single cold source |
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| CN209926547U true CN209926547U (en) | 2020-01-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057064A (en) * | 2019-05-20 | 2019-07-26 | 浙江大冲能源科技有限公司 | A kind of combined air conditioner unit high-efficiency energy-saving control based on single cold source |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057064A (en) * | 2019-05-20 | 2019-07-26 | 浙江大冲能源科技有限公司 | A kind of combined air conditioner unit high-efficiency energy-saving control based on single cold source |
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Address after: 4 / F, building 1, No. 22, Kangzheng Road, Gongshu District, Hangzhou City, Zhejiang Province Patentee after: Zhejiang Dachong Energy Technology Co.,Ltd. Address before: 4 / F, building 1, No. 22, Kangzheng Road, Gongshu District, Hangzhou City, Zhejiang Province Patentee before: ZHEJIANG DACHONG ENERGY SCIENCE & TECHNOLOGY CO.,LTD. |