CN201680518U - Central air conditioner for multi-link flow-rate changing household type water system - Google Patents
Central air conditioner for multi-link flow-rate changing household type water system Download PDFInfo
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- CN201680518U CN201680518U CN2010202102971U CN201020210297U CN201680518U CN 201680518 U CN201680518 U CN 201680518U CN 2010202102971 U CN2010202102971 U CN 2010202102971U CN 201020210297 U CN201020210297 U CN 201020210297U CN 201680518 U CN201680518 U CN 201680518U
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Abstract
The utility model provides a central air conditioner for a multi-link flow-rate changing household type water system. An energy storage water tank forms a closed water system with pipelines at and between the indoor ends, a water outlet of the energy storage water tank is first connected with a constant-voltage frequency changing device and is then respectively connected to water inlets at the indoor ends through the pipelines, and electric valves are respectively arranged on water outlet pipes of water outlets at the indoor ends; the pipeline between the water outlet of the energy storage water tank and the constant-voltage frequency changing device is also connected to a fixed-voltage expansion water tank through a branch pipeline, and the liquid level of the fixed-voltage expansion water tank is higher than the highest point of the liquid level in the closed water system. The fixed-voltage expansion water tank exerts the function of keeping the pressure of the water inlet of the constant-voltage frequency changing device constant at the same time as carrying out automatic water supplementation on the system; the constant-voltage frequency changing device can be automatically started or stopped according to the working state of an indoor machine set, so as to achieve the purposes of saving energy and reducing consumption, and effectively reduce frequent starting and stopping of a heat pump machine set under the condition of low load of an indoor machine, thereby reducing the running energy consumption of the heat pump machine set, and prolonging the service life of the machine set.
Description
Technical field
The utility model belongs to air-conditioning technical field, specifically relates to a kind of multi-joint variable-flow household water system central air-conditioning that is applicable to independent family or other small-sized places.
Background technology
Along with the fast development of economy and technology, the application of central air-conditioning has broken through traditional application places, as large-scale public character, productivity and commercial building field, and enters high-end residential and other all places that space environment is had higher requirements fast.Central air-conditioning is accepted by increasing people with its distinctive comfortableness and with the harmony of indoor and outdoor spaces environment.
Residential central air-is a small central air conditioning, and it has inherited handling easily, the flexibility of comfortableness, aesthetic property and domestic air conditioning of central air-conditioning; Overcome simultaneously large-scale central air conditioner system again and formed complicated, shortcomings such as energy consumption is big, it is strongly professional to control, maintenance cost height.Because the distinctive superiority of residential central air-is able to extensive employing in increasing large-sized multiple layer or multi-use architecture.
The time in about 10 years has approximately been experienced in residential central air-application, development at home.China except the north and other cold district in winter (below 5 ℃), adopt the heat pump air conditioner form mostly, and heat pump air conditioner is broadly divided into following several form: air-cooled heat pump water system, air-cooled heat pump fluorine system, earth source heat pump water system, earth source heat pump fluorine system.
Existing household water system air-conditioning is air-conditioning system cold (heat) source with the heat pump main frame generally, according to the cooling and heating load of zones of different and building, the finishing characteristics are carried out type selecting, configuration and water, the wind system design of end-equipment, are that medium is by cold (heat) matchmaker water pump construction system refrigeration (heat) circulation with water.But because the particularity of its environment for use of household air conditioning, the designer must take all factors into consideration following aspect: the low operation characteristic of indoor while probability of use, reduce the requirement of initial cost, the system energy consumption that produces owing to " low load with strong power " phenomenon in the minimizing day-to-day operation process etc., so the matching principle of " high load with small power " is all adhered in main frame and terminal configuration when designing in system, in order to take into account the minimum discharge restriction of air-conditioner host simultaneously, end-equipment comes rough balance sysmte discharge to become the existing design means of extensive employing by the setting of electric two-way valve bound fraction electric T-shaped valve.But reasons such as the complexity of installing owing to electric T-shaped valve and many use hidden danger cause less employing in the actual engineering, and more are to adopt the method that the part electric two-way valve only is set.
Analyse in depth the design characteristics of existing system and, be not difficult to find that obviously there is following problem in existing system in conjunction with the practical application present situation:
A. there is the restriction of minimum discharge in the heat pump main frame, so constant flow pump can not balance or satisfied the end-equipment traffic demand of various uses under making up, the optimum efficiency that both can't guarantee air-conditioning also can't be realized the energy-saving run of system.
B. residential central air-often is under the ultra-low load running status, so implied a large amount of nothing " merit " consumption, concrete manifestation is as follows: the water pump wasted work of I " low load with strong power "; II cold (heat) matchmaker water overcurrent produces in the inoperative end-equipment cold (heat) dissipates.
C. under " low load with strong power " situation, cause main frame to produce owing to household air conditioning water system capacity is little and frequently open, stop phenomenon, cause: I is because the medium fluctuating temperature causes air conditioning comfortableness to descend greatly; The frequent start-stop of the high-power main frame of II has increased the operation power consumption, and the stability and the service life that influence main frame.
D. there is great condensate water hidden danger in the overcurrent of chilled water in the inoperative end-equipment under summer high temperature, high humidity environment.
E. because household air conditioning system little (pressure reduction change little), indoor applied load changes greatly and air-conditioner host and indoor load special configurations concern, causes the unsteady flow amount technology such as pressure reduction bypass that adopt in the conventional air-conditioning engineering can't adopt in this type systematic.
Summary of the invention
The utility model mainly is to solve above-mentioned existing in prior technology technical problem, a kind of flow that can regulate air-conditioning system medium water in real time is provided, realize dynamic throttling, avoid idle dissipation, promote the household water system central air-conditioning of comfort of air conditioner, increase stable equipment operation simultaneously significantly.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of multi-joint variable-flow household water system central air-conditioning, comprise source pump, source pump is connected to energy-accumulating water tank through pipeline, the delivery port of energy-accumulating water tank is connected respectively to the water inlet of each indoor end through pipeline, the delivery port of each indoor end all is connected to the water return outlet of energy-accumulating water tank through pipeline, energy-accumulating water tank and each indoor end and pipeline therebetween constitute closed Water System, the delivery port of described energy-accumulating water tank connects the constant pressure frequency conversion device is connected respectively to each indoor end again through pipeline water inlet earlier, is equipped with motor-driven valve on the outlet pipe of each indoor terminal delivery port; Pipeline between the delivery port of described energy-accumulating water tank and the constant pressure frequency conversion device also is connected to the level pressure expansion tank through lateral, the liquid level of level pressure expansion tank is higher than the peak of liquid level in the closed Water System, the level pressure expansion tank is when carrying out automatic water supplement to system, also played the effect of constant constant pressure frequency conversion device water inlet pressure, setting the liquid level of compression swelling water tank and the difference in height between the constant pressure frequency conversion pump water inlet mouth is H, the pressure F=ρ gH at constant pressure frequency conversion pump water inlet mouth place then, ρ is the density of water, g is a gravity constant, so the pressure F of constant pressure frequency conversion device water inlet is a fixed value by the height setting of level pressure expansion tank liquid level; Motor-driven valve on each indoor end is connected to online controller through holding wire, the constant pressure frequency conversion device also is connected to online controller through holding wire, online controller is by gathering the working signal of motor-driven valve automatically, accurately judge the duty of each indoor end, and then the open and close of control constant pressure frequency conversion device, that is: when wherein arbitrary motor-driven valve was in opening, online controller was then exported the enabling signal of constant pressure frequency conversion device, made it in running order; When all motor-driven valves all were in closed condition, online controller was then cancelled constant pressure frequency conversion device working signal, and it is quit work.Can open automatically or stop the constant pressure frequency conversion device according to the duty of indoor units like this, reach energy saving purposes.
As preferably, described constant pressure frequency conversion device is made of the constant pressure frequency conversion pump, the constant pressure frequency conversion pump comprises parts such as water pump, VFC cabinet and pressure sensor, the VFC cabinet is a constant target with the exit of pump force value that is set, automatically export the running frequency of water pump, dynamically satisfy the WATER AS FLOW MEDIUM traffic demand under the various operation conditions of air-conditioning, thereby under the prerequisite that fully guarantees the air-conditioning effect, realize the energy-saving run of system.
As preferably, be provided with pressure sensor between the pipeline of described constant pressure frequency conversion device and water outlet direction thereafter, pressure sensor is gathered outlet conduit pressure after holding wire feeds back to the constant pressure frequency conversion device, can further regulate the optimal operating parameter of constant pressure frequency conversion device like this.
Source pump automatic switchover operational mode (freeze, heat, recuperation of heat etc.), make the water of energy-accumulating water tank the inside carry out heat exchange through evaporimeter or the condenser that pipeline enters into source pump, and thermostatic medium water is stored in the energy-accumulating water tank, by the constant pressure frequency conversion pump WATER AS FLOW MEDIUM is transported to each indoor end then.By the intermediate energy storage water tank is set, realized the method for source pump to indoor indirect cooling (heat), for the flow of WATER AS FLOW MEDIUM in the constant pressure frequency conversion device real-time regulation system lays the foundation, the level pressure expansion tank that is provided with had both played automatic water supplement, bear the effect of WATER AS FLOW MEDIUM expanded by heating, the effect of the preceding level pressure of constant pressure frequency conversion pump pump of also having held concurrently, for the constant-pressure pump outlet pressure realizes that constant pressure frequency conversion creates conditions, enlarged the water capacity of system, promote the refrigeration of system or heated stability, but also can reduce source pump frequently opening under the little load condition of indoor set, stop phenomenon, and then reduce the operation energy consumption of source pump, also prolong the service life of unit simultaneously.
The omnidistance drag losses Δ P of system when guaranteeing the metered flow of whole system index circuit indoor set is the constant voltage foundation, the outlet pressure P=F+ Δ P of constant pressure frequency conversion device then, the outlet pressure P of constant pressure frequency conversion device is made as steady state value, when indoor terminal quantity of opening or traffic demand change, the outlet actual pressure of the constant pressure frequency conversion device trend that just can change: when indoor terminal quantity of opening increases or traffic demand increased, then the outlet actual pressure of constant pressure frequency conversion device can produce downward trend, this moment, the constant pressure frequency conversion device needed by increasing the setting value that frequency satisfies outlet pressure, outlet actual pressure until the constant pressure frequency conversion device reaches setting value P, and remains dynamic equilibrium; When reducing when indoor terminal quantity minimizing of opening or to traffic demand, the outlet actual pressure of constant pressure frequency conversion device can produce increase tendency, this moment, the constant pressure frequency conversion device was by subtracting the setting value that satisfies outlet pressure frequently, outlet actual pressure until the constant pressure frequency conversion device is reduced to setting value P, and remains dynamic equilibrium.
In sum, the utility model is regulated the flow of air-conditioning system medium water in real time by the constant pressure frequency conversion device, has the beneficial effect of realizing dynamic throttling, avoiding idle dissipation; Can also effectively reduce simultaneously source pump and under the little load condition of indoor end, frequently open, stop phenomenon, thereby reduce the operation energy consumption of source pump, prolong the service life of unit simultaneously.The utility model is simple in structure, reasonable in design.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model.
The specific embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: referring to Fig. 1, the utility model source pump 1 automatic switchover operational mode (refrigeration, heat, recuperation of heat etc.), make the water of energy-accumulating water tank 3 the insides carry out heat exchange through evaporimeter or the condenser that pipeline enters into source pump 1, and thermostatic medium water is stored in the energy-accumulating water tank 3, the delivery port of energy-accumulating water tank 3 connects constant pressure frequency conversion device 5 earlier and is connected respectively to each indoor water inlet of terminal 2 through pipeline again, each indoor delivery port of terminal 2 all is connected to the water return outlet of energy-accumulating water tank 3 through pipeline, wherein energy-accumulating water tank 3 constitutes closed Water System with each indoor terminal 2 pipeline that reach therebetween.
Pipeline between the delivery port of energy-accumulating water tank 3 and the constant pressure frequency conversion device 5 also is connected to level pressure expansion tank 4 through lateral, the liquid level of level pressure expansion tank 4 is higher than the peak of liquid level in the closed Water System, level pressure expansion tank 4 is when carrying out automatic water supplement to system, also played the effect of constant constant pressure frequency conversion device water inlet pressure, setting the liquid level of compression swelling water tank and the difference in height between the constant pressure frequency conversion device water inlet is H, the pressure F=ρ gH of constant pressure frequency conversion device water inlet then, ρ is the density of water, g is a gravity constant, so the pressure F of constant pressure frequency conversion device water inlet is set at fixed value by the liquid level of level pressure expansion tank.
Be equipped with motor-driven valve 7 on the outlet pipe of each indoor terminal 2 delivery port, wherein constant pressure frequency conversion device 5 is the constant pressure frequency conversion pump, the constant pressure frequency conversion pump partly is made of water pump, VFC cabinet and pressure sensor etc., the VFC cabinet is a constant target with the exit of pump force value that is set, automatically export the running frequency of water pump, dynamically satisfy the WATER AS FLOW MEDIUM traffic demand under the various operation conditions of air-conditioning, thereby under the prerequisite that fully guarantees the air-conditioning effect, realize the energy-saving run of system.
Be provided with pressure sensor 8 between the pipeline of constant pressure frequency conversion device 5 and water outlet direction thereafter, pressure sensor 8 is gathered outlet conduit pressure after holding wire feeds back to constant pressure frequency conversion device 5, can further regulate the optimal operating parameter of constant pressure frequency conversion device like this.
Each indoor motor-driven valve of terminal 27 is connected to online controller 6 through holding wire, constant pressure frequency conversion device 5 also is connected to online controller 6 through holding wire, online controller 6 is by gathering the working signal of motor-driven valve 7 automatically, accurately judge each indoor duty of terminal 2, and then the open and close of control constant pressure frequency conversion device 5, that is: when wherein arbitrary motor-driven valve was in opening, online controller was then exported the enabling signal of constant pressure frequency conversion pump, made it in running order; When all motor-driven valves all were in closed condition, online controller was then cancelled constant pressure frequency conversion pump work signal, and it is quit work.Can open automatically or stop the constant pressure frequency conversion pump according to the duty of indoor end like this, reach energy saving purposes.
At last, should be pointed out that above embodiment only is the more representational example of the utility model.Obviously, the technical solution of the utility model is not limited to the foregoing description, and many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from the disclosed content of the utility model all should be thought protection domain of the present utility model.
Claims (3)
1. multi-joint variable-flow household water system central air-conditioning, comprise source pump (1), source pump (1) is connected to energy-accumulating water tank (3) through pipeline, the delivery port of energy-accumulating water tank (3) is connected respectively to the water inlet of each indoor end (2) through pipeline, the delivery port of each indoor end (2) all is connected to the water return outlet of energy-accumulating water tank (3) through pipeline, energy-accumulating water tank (3) constitutes closed Water System with each indoor end (2) and pipeline therebetween, the delivery port that it is characterized in that described energy-accumulating water tank (3) connects constant pressure frequency conversion device (5) is connected respectively to each indoor end (2) again through pipeline water inlet earlier, is equipped with motor-driven valve (7) on the outlet pipe of each indoor end (2) delivery port; Pipeline between the delivery port of described energy-accumulating water tank (3) and the constant pressure frequency conversion device (5) also is connected to level pressure expansion tank (4) through lateral, and the liquid level of level pressure expansion tank (4) is higher than the peak of liquid level in the closed Water System; Motor-driven valve (7) on each indoor end (2) is connected to online controller (6) through holding wire, and constant pressure frequency conversion device (5) also is connected to online controller (6) through holding wire.
2. multi-joint variable-flow household water system central air-conditioning according to claim 1 is characterized in that described constant pressure frequency conversion device (5) is made of the constant pressure frequency conversion pump.
3. multi-joint variable-flow household water system central air-conditioning according to claim 1, it is characterized in that being provided with pressure sensor (8) between the pipeline of described constant pressure frequency conversion device (5) and water outlet direction thereafter, pressure sensor (8) is gathered outlet conduit pressure after holding wire feeds back to constant pressure frequency conversion device (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202102971U CN201680518U (en) | 2010-05-31 | 2010-05-31 | Central air conditioner for multi-link flow-rate changing household type water system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202102971U CN201680518U (en) | 2010-05-31 | 2010-05-31 | Central air conditioner for multi-link flow-rate changing household type water system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201680518U true CN201680518U (en) | 2010-12-22 |
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ID=43345560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202102971U Expired - Lifetime CN201680518U (en) | 2010-05-31 | 2010-05-31 | Central air conditioner for multi-link flow-rate changing household type water system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201680518U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858624A (en) * | 2010-05-31 | 2010-10-13 | 绍兴市恒源冷热技术工程有限公司 | Multiple variable-flow household water system central air condition |
| CN107823941A (en) * | 2017-12-08 | 2018-03-23 | 中国恩菲工程技术有限公司 | Filter press is fed and flusher, method and system |
-
2010
- 2010-05-31 CN CN2010202102971U patent/CN201680518U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858624A (en) * | 2010-05-31 | 2010-10-13 | 绍兴市恒源冷热技术工程有限公司 | Multiple variable-flow household water system central air condition |
| CN101858624B (en) * | 2010-05-31 | 2012-09-05 | 绍兴市恒源冷热技术工程有限公司 | Multiple variable-flow household water system central air conditioner |
| CN107823941A (en) * | 2017-12-08 | 2018-03-23 | 中国恩菲工程技术有限公司 | Filter press is fed and flusher, method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20101222 Effective date of abandoning: 20120905 |