CN206113236U - Full variable frequency air conditioner cold water two stage pump conveying system - Google Patents
Full variable frequency air conditioner cold water two stage pump conveying system Download PDFInfo
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- CN206113236U CN206113236U CN201621084780.3U CN201621084780U CN206113236U CN 206113236 U CN206113236 U CN 206113236U CN 201621084780 U CN201621084780 U CN 201621084780U CN 206113236 U CN206113236 U CN 206113236U
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- cold water
- flowmeter
- pump
- control
- pipe
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Abstract
The utility model provides a full variable frequency air conditioner cold water two stage pump conveying system, including cooling water set, cold water one -level pump, first wet return, second wet return, first delivery pipe, cold water two stage pump and profit and loss pipe, full variable frequency air conditioner cold water two stage pump conveying system still includes: first -class gauge, second flowmeter, controlling means, wherein, when the flow numerical value of first -class gauge is less than the flow numerical value of second flowmeter, controlling means control cold water one -level pump despin mechanism to control the cooling water set at least some stop the function, when the flow numerical value of first -class gauge was greater than the flow numerical value of second flowmeter, controlling means control cold water one -level pump increased the rotational speed to the function of control cooling water set loading. The utility model discloses a flow numerical value of first -class gauge and second flowmeter comes to adjust the frequency of cold water one -level pump to can subtract and carry or the loading cooling water set, avoid the profit and loss pipe to go up " being full of " or " losing " bypass, reduce cold water one -level pump energy consumption.
Description
Technical field
The utility model is related to a kind of full convertible frequency air-conditioner cold water two stage pump induction system.
Background technology
In central air conditioner system, air conditioner cold water induction system is responsible for for the low-temperature cold water that refrigeration machine is provided being transported to each
End, then the high-temperature tempering of each end is returned in refrigeration machine.The conveying energy consumption of water supply pump accounts for the 10% of whole refrigeration total energy consumption
～20%, it can be seen that, the conveying energy consumption of water supply pump is the important component part of the energy consumption of central air conditioner system.
Air conditioner cold water Primary pump system is developed in 20 century 70s, and the problem that it is directed to is that end is become using two water-through valves
Flow-rate adjustment, end side total flow is reduced with load reduction；But cooling-water machine must be maintained at being run under specified chilled-water flow,
Cooling-water machine side flow constant.In Primary pump system, two stage pump converting operation, to adapt to the change of end side flow, section
The about energy；Surely frequency runs primary pump, maintains cooling-water machine flow constant；End relies on profit and loss Guan Laijin with the difference in flow of cold water pusher side
Row is adjusted.And it is current, most handpiece Water Chilling Units have allowed flow to be changed interior in a big way, generally, centrifugal refrigerating machines
The changes in flow rate scope of permission for rated value 30%～130%, screw-type water chiller allow scope be 40%～
120%.
In air conditioner cold water two stage pump running, when end flow is more than handpiece Water Chilling Units flow, profit and loss Guan Shangjing
" thanks to " state can often occur, a part of air conditioner cold water backwater flows to water supply side, mixes with handpiece Water Chilling Units water supply through profit and loss pipe
It is mixed, improve the supply water temperature of end side so that end heat exchange amount declines, so as to end is further improved to the demand of the water yield,
Cause bypass flow further to improve, blending is more serious, and end supply water temperature is further up, vicious circle is formed, for water temperature
Degree is improved, and air conditioning terminal air heat humidity is less able, return water temperature also more and more higher, causes handpiece Water Chilling Units loading delayed, slow；
To solve the problems, such as during " thanks to " state, it has to increase primary pump and corresponding handpiece Water Chilling Units, cause multiple stage handpiece Water Chilling Units low negative
Carrying row, increases air conditioner cold water units consumption and water pump conveying energy consumption；When end side flow is less than handpiece Water Chilling Units flow,
Often there is " being full of " state on profit and loss pipe, a part of air conditioner cold water unit supplies water and flows to backwater side through profit and loss pipe, with cold water
Unit backwater is blended, and reduces handpiece Water Chilling Units return water temperature, causes handpiece Water Chilling Units energy consumption to increase.
In sum, in prior art air conditioner cold water two stage pump induction system there is cooling water system for air conditioning operating condition can not
Meet the situation of design conditions, it is impossible to ensure air conditioner refrigerating effect on moisture extraction, and considerably increase air conditioning energy consumption and air-conditioning cold
The problem of water system conveying energy consumption.
Utility model content
The technical problems to be solved in the utility model be in order to overcome prior art in air conditioner cold water induction system exist increase
The defect of air conditioning energy consumption and cooling water system for air conditioning conveying energy consumption is added, there is provided a kind of full convertible frequency air-conditioner cold water two stage pump conveying
System.
The utility model is to solve above-mentioned technical problem by following technical proposals：
A kind of full convertible frequency air-conditioner cold water two stage pump induction system, including handpiece Water Chilling Units, cold water primary pump, the first return pipe,
Second return pipe, the first feed pipe, cold water two stage pump and profit and loss pipe, one end of the handpiece Water Chilling Units passes through first return pipe
Connect with described cold water primary pump one end, the cold water primary pump other end is connected with second return pipe, the cooling-water machine
The other end of group is connected by first feed pipe with the cold water two stage pump, and the profit and loss pipe is communicated in second backwater
Between pipe and first feed pipe, its feature is that the full convertible frequency air-conditioner cold water two stage pump induction system also includes：
First flowmeter, the first flowmeter be located at first feed pipe on, and positioned at the profit and loss pipe with it is described
Between cold water two stage pump；
Second flowmeter, the second flowmeter be located at second return pipe on, and positioned at the profit and loss pipe with it is described
Between cold water primary pump；
Control device, the control device is used to control the rotating speed of the cold water primary pump；
Wherein, when the flow number of first flowmeter is less than the flow number of the second flowmeter, the control dress
The control cold water primary pump reduction rotating speed is put, and controls at least a portion of the handpiece Water Chilling Units and decommissioned；When first-class
When the flow number of gauge is more than the flow number of the second flowmeter, the control device controls the cold water primary pump and increases
Plus rotating speed, and control the handpiece Water Chilling Units loading running.
It is preferred that the cold water primary pump is variable frequency pump with the cold water two stage pump.
It is preferred that the control device includes：
Controller, the controller is used to control the rotating speed of the cold water primary pump；
First control line, the second control line, the 3rd control line and the 4th control line, first control line is electrically connected to institute
State between controller and the first flowmeter, second control line is electrically connected to the controller with the second flowmeter
Between, the 3rd control line is electrically connected between the controller and the cold water primary pump, and the 4th control line is electrically connected
It is connected between the controller and the handpiece Water Chilling Units.
Positive effect of the present utility model is：
The utility model is by the first flowmeter and second return pipe on relatively more described first feed pipe
The second flowmeter flow number, to be adjusted to the frequency of the cold water primary pump, and can off-load or loading institute
State handpiece Water Chilling Units, it is to avoid " be full of " on profit and loss pipe or " thanks to " bypass, reduce the cold water primary pump energy consumption, that is, reduce air-conditioning
System energy consumption and cooling water system for air conditioning conveying energy consumption；Simultaneously, it is ensured that the air-conditioned room comfort level of end.
Description of the drawings
Fig. 1 is the structural representation of the full convertible frequency air-conditioner cold water two stage pump induction system of the preferred embodiment of the utility model one
Figure.
Description of reference numerals
Handpiece Water Chilling Units 1
Cold water primary pump 2
First return pipe 31
Second return pipe 32
First feed pipe 4
Cold water two stage pump 5
Profit and loss pipe 6
First flowmeter 7
Second flowmeter 8
Controller 91
First control line 92
Second control line 93
3rd control line 94
4th control line 95
" being full of " state flows to A
" thanks to " state flows to B
Specific embodiment
Name preferred embodiment, and combine accompanying drawing becoming apparent from intactly illustrating the utility model.
As shown in figure 1, a kind of full convertible frequency air-conditioner cold water two stage pump induction system of the present embodiment offer, including handpiece Water Chilling Units 1,
Cold water primary pump 2, the first return pipe 31, the second return pipe 32, the first feed pipe 4, cold water two stage pump 5 and profit and loss pipe 6.
The first return pipe 31 that one end of handpiece Water Chilling Units 1 passes through is connected with the one end of cold water primary pump 2, and cold water primary pump 2 is another
One end connects with the second return pipe 32, and the first feed pipe 4 that the other end of handpiece Water Chilling Units 1 passes through is connected with cold water two stage pump 5.
In the present embodiment, the quantity of handpiece Water Chilling Units 1 is 2.
Profit and loss pipe 6 is communicated between the second return pipe 32 and the first feed pipe 4.
Cold water primary pump 2 is variable frequency pump with cold water two stage pump 5.
The full convertible frequency air-conditioner cold water two stage pump induction system also includes：First flowmeter 7, second flowmeter 8 and control
Device.
First flowmeter 7 is located on the first feed pipe 4, and between profit and loss pipe 6 and cold water two stage pump 5.
Second flowmeter 8 is located on the second return pipe 32, and between profit and loss pipe 6 and cold water primary pump 2.
The control device is used to control the rotating speed of cold water primary pump 2.
Wherein, when the flow number of first flowmeter 7 is less than the flow number of second flowmeter 8, the control device
Control cold water primary pump 2 reduces rotating speed, and controls at least a portion of handpiece Water Chilling Units 1 and decommission；When the stream of first flowmeter 7
When numerical quantity is more than the flow number of second flowmeter 8, the control device control cold water primary pump 2 increases rotating speed, and controls
The loading running of handpiece Water Chilling Units 1.
The control device includes：Controller 91, the first control line 92, the second control line 93, the 3rd control line 94 and
Four control lines 95.
Controller 91 is used to control the rotating speed of cold water primary pump 2.
First control line 92 is electrically connected between controller 91 and first flowmeter 7.
Second control line 93 is electrically connected between controller 91 and second flowmeter 8.
3rd control line 94 is electrically connected between controller 91 and cold water primary pump 2.
4th control line 95 is electrically connected between controller 91 and handpiece Water Chilling Units 1.
Operationally, first flowmeter 7 is by the first control line 92 by real-time first feed pipe 4 for the utility model
Flow number is transferred to controller 91；Second flowmeter 8 passes through the second control line 93 by the stream on real-time second return pipe 32
Numerical quantity is transferred to controller 91.
When the flow number of first flowmeter 7 is less than the flow number of second flowmeter 8, the full convertible frequency air-conditioner cold water
Two stage pump induction system occurs " being full of " state, that is, air conditioner water of the part in the first feed pipe 4 can be through profit and loss pipe 6
Along " being full of " state A is flowed to into the second return pipe 32.Controller 91 reduces the operation of cold water primary pump 2 by the 3rd control line 94
Frequency, so as to reduce its running speed, while controller 91 is according to the flow number of 7 flow number second flowmeter of first flowmeter 8
The gap of value, is decommissioned rapidly by the handpiece Water Chilling Units 1 of the control section of the 4th control line 95, makes the flow of first flowmeter 7
Level off to the flow of second flowmeter 8.So, it is to avoid " being full of " shape occurs in the full convertible frequency air-conditioner cold water two stage pump induction system
State.Further, both can guarantee that the high-temperature tempering of whole ends flowed through handpiece Water Chilling Units 1 and freezed, again can be because of the rotating speed of cold water primary pump 2
Reduce and portion of cold water unit 1 decommissions and energy-conservation.
When the flow number of first flowmeter 7 is more than the flow number of second flowmeter 8, the full convertible frequency air-conditioner cold water
Two stage pump induction system occurs " thanks to " state, that is, air conditioner water of the part in the second return pipe 32 can be through profit and loss pipe
6 flow to B into the first feed pipe 4 along " thanks to " state.At this moment, controller 91 increases cold water primary pump 2 by the 3rd control line 94
Running frequency, so as to increase its running speed, while controller 91 is according to the flow number second flowmeter 8 of first flowmeter 7
The gap control handpiece Water Chilling Units 1 of flow number are loaded rapidly, and the flow for making second flowmeter 8 increases, and level off to first flowmeter 7
Flow.So, it is to avoid " thanks to " state occurs in the full convertible frequency air-conditioner cold water two stage pump induction system.Further, it is to avoid end
The backwater at end total supply water temperature rising, problem that effect on moisture extraction is reduced after blending with the water outlet of handpiece Water Chilling Units 1, and avoid supplying water temperature
Spending height causes to increase cold water primary pump 2 and handpiece Water Chilling Units 1, reduces operation energy consumption.
In the present embodiment, the cold water primary pump adopts variable frequency pump, be able to can be solved when " thanks to " according to flow control
The mutation of total supply water temperature during state, turn avoid the problem that handpiece Water Chilling Units can not be loaded rapidly.Meanwhile, because stream in profit and loss pipe
Amount very little, so as to save the energy consumption of cold water primary pump, and can improve the comfortableness of air-conditioning system.
Although the foregoing describing specific embodiment of the present utility model, it will be appreciated by those of skill in the art that
This is merely illustrative of, and protection domain of the present utility model is defined by the appended claims.Those skilled in the art
On the premise of without departing substantially from principle of the present utility model and essence, various changes or modifications can be made to these embodiments,
But these changes and modification each fall within protection domain of the present utility model.
Claims (3)
1. a kind of full convertible frequency air-conditioner cold water two stage pump induction system, including handpiece Water Chilling Units, cold water primary pump, the first return pipe,
Two return pipes, the first feed pipe, cold water two stage pump and profit and loss pipe, one end of the handpiece Water Chilling Units by first return pipe with
Cold water primary pump one end connection, the cold water primary pump other end is connected with second return pipe, the handpiece Water Chilling Units
The other end connected with the cold water two stage pump by first feed pipe, the profit and loss pipe is communicated in second return pipe
Between first feed pipe, it is characterised in that the full convertible frequency air-conditioner cold water two stage pump induction system also includes：
First flowmeter, the first flowmeter is located on first feed pipe, and positioned at the profit and loss pipe and the cold water
Between two stage pump；
Second flowmeter, the second flowmeter is located on second return pipe, and positioned at the profit and loss pipe and the cold water
Between primary pump；
Control device, the control device is used to control the rotating speed of the cold water primary pump；
Wherein, when the flow number of first flowmeter is less than the flow number of the second flowmeter, the control device control
The cold water primary pump reduction rotating speed is made, and controls at least a portion of the handpiece Water Chilling Units and decommissioned；Work as first flowmeter
Flow number more than the second flowmeter flow number when, the control device controls the cold water primary pump and increases to turn
Speed, and control the handpiece Water Chilling Units loading running.
2. convertible frequency air-conditioner cold water two stage pump induction system as claimed in claim 1 complete, it is characterised in that the cold water primary pump
Variable frequency pump is with the cold water two stage pump.
3. convertible frequency air-conditioner cold water two stage pump induction system as claimed in claim 1 complete, it is characterised in that the control device bag
Include：
Controller, the controller is used to control the rotating speed of the cold water primary pump；
First control line, the second control line, the 3rd control line and the 4th control line, first control line is electrically connected to the control
Between device processed and the first flowmeter, second control line be electrically connected to the controller and the second flowmeter it
Between, the 3rd control line is electrically connected between the controller and the cold water primary pump, the 4th control line electrical connection
Between the controller and the handpiece Water Chilling Units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621084780.3U CN206113236U (en) | 2016-09-27 | 2016-09-27 | Full variable frequency air conditioner cold water two stage pump conveying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621084780.3U CN206113236U (en) | 2016-09-27 | 2016-09-27 | Full variable frequency air conditioner cold water two stage pump conveying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206113236U true CN206113236U (en) | 2017-04-19 |
Family
ID=58521093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621084780.3U Expired - Fee Related CN206113236U (en) | 2016-09-27 | 2016-09-27 | Full variable frequency air conditioner cold water two stage pump conveying system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206113236U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107192091A (en) * | 2017-05-15 | 2017-09-22 | 深圳达实智能股份有限公司 | Pump of hospital's air-conditioning and secondary pump energy-saving control method and system |
| CN109282398A (en) * | 2018-08-23 | 2019-01-29 | 中国建筑西北设计研究院有限公司 | A kind of air-conditioning hot water or cold water distributing system and method |
| CN109724196A (en) * | 2019-02-27 | 2019-05-07 | 北京中科方盛能源科技有限公司 | The multistage balanced type pipe network of refrigeration equipment |
-
2016
- 2016-09-27 CN CN201621084780.3U patent/CN206113236U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107192091A (en) * | 2017-05-15 | 2017-09-22 | 深圳达实智能股份有限公司 | Pump of hospital's air-conditioning and secondary pump energy-saving control method and system |
| CN107192091B (en) * | 2017-05-15 | 2019-09-20 | 深圳达实智能股份有限公司 | Hospital's air-conditioning once pumps and secondary pump energy-saving control method and system |
| CN109282398A (en) * | 2018-08-23 | 2019-01-29 | 中国建筑西北设计研究院有限公司 | A kind of air-conditioning hot water or cold water distributing system and method |
| CN109724196A (en) * | 2019-02-27 | 2019-05-07 | 北京中科方盛能源科技有限公司 | The multistage balanced type pipe network of refrigeration equipment |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170419 Termination date: 20210927 |
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| CF01 | Termination of patent right due to non-payment of annual fee |