CN206593329U - A kind of convertible frequency air-conditioner - Google Patents
A kind of convertible frequency air-conditioner Download PDFInfo
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- CN206593329U CN206593329U CN201720138159.9U CN201720138159U CN206593329U CN 206593329 U CN206593329 U CN 206593329U CN 201720138159 U CN201720138159 U CN 201720138159U CN 206593329 U CN206593329 U CN 206593329U
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- conditioner
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Abstract
This application discloses a kind of convertible frequency air-conditioner, including helical-lobe compressor and air compressor motor, guiding valve is provided with helical-lobe compressor, wherein, air compressor motor is permasyn morot, and guiding valve is the transformation ratio guiding valve that helical-lobe compressor can be made to adjust interior volume specific ratio according to the actual pressure ratio of operation.The convertible frequency air-conditioner that the present embodiment is provided, by the way that air compressor motor is improved into permasyn morot, and the level pressure of helical-lobe compressor is replaced with into transformation ratio guiding valve than guiding valve, pass through the improvement of two aspects, so that the Integrated part-load value of convertible frequency air-conditioner obtains dual raising, the working effect of convertible frequency air-conditioner is farthest optimized.In addition, only convertible frequency air-conditioner can also be improved from one side, air compressor motor is only for example improved to permasyn morot by alternating current impression formula motor, or level pressure is only improved to transformation ratio guiding valve than guiding valve, the Integrated part-load value of convertible frequency air-conditioner can be also improved to a certain extent.
Description
Technical field
The utility model is related to air-conditioning technical field, more particularly to a kind of convertible frequency air-conditioner.
Background technology
Converter technique is had been widely used in field of air conditioning because of its characteristics of energy saving, such as air compressor motor, fan electromotor and
Pump motor etc., to improve the operational efficiency under each rotating speed of motor, and then improves the service behaviour of air-conditioner set, saves energy
Source.
Existing air-cooled screw convertible frequency air-conditioner unit generally uses AC frequency conversion helical-lobe compressor, and air compressor motor is used
Alternating current impression formula motor, the guiding valve of compressor is generally using level pressure than design.But, there is stator in alternating current impression formula motor
Electric current and stator resistance loss, rotor copper loss and the low shortcoming of underloading power factor (PF), and level pressure is used than the guiding valve of design, warp
When compressor can often run under off-design pressure ratio operating mode, there is a situation where overcompression and under-voltage contracting, make the nothing of compressor
Diligent loss is big, poor performance, and it is not highly desirable to cause the Integrated part-load value (IPLV) of air-conditioner set.
Therefore, the Integrated part-load value of air-conditioning how is improved, current those skilled in the art are had become urgently
To be solved the problem of.
Utility model content
In view of this, the utility model provides a kind of convertible frequency air-conditioner, by being improved to its building block, can make
The Integrated part-load value of convertible frequency air-conditioner is further improved.
In order to achieve the above object, the utility model provides following technical scheme：
Guiding valve is provided with a kind of convertible frequency air-conditioner, including helical-lobe compressor and air compressor motor, the helical-lobe compressor,
Wherein, the air compressor motor is permasyn morot, and the guiding valve is that can make the helical-lobe compressor according to operation
Actual pressure ratio adjust interior volume specific ratio transformation ratio guiding valve.
It is preferred that, in above-mentioned convertible frequency air-conditioner, the screw rod pressure is provided with the refrigerant circulation loop of the convertible frequency air-conditioner
Contracting machine, four-way reversing valve, air side heat exchanger, throttle part and water-side heat.
It is preferred that, in above-mentioned convertible frequency air-conditioner, in addition to：
Be arranged in the refrigerant circulation loop, and be located at respectively the air side heat exchanger and the throttle part it
Between, between the throttle part and the water-side heat, and it is described to allow the refrigerant to be flowed to from the air side heat exchanger
The first check valve and the second check valve of water-side heat；
Be arranged in the refrigerant circulation loop, and be located at respectively the water-side heat and the throttle part it
Between, between the throttle part and the air side heat exchanger, and it is described to allow the refrigerant to be flowed to from the water-side heat
3rd check valve of air side heat exchanger and the 4th check valve, the 3rd check valve are arranged in parallel with second check valve, institute
The 4th check valve is stated to be arranged in parallel with first check valve.
The convertible frequency air-conditioner that the utility model is provided, including the compressor of helical-lobe compressor and drive screw compressor are electronic
Guiding valve is provided with machine, and helical-lobe compressor, the application's thes improvement is that, by the exchange of original drive screw compressor
Inductor motor replaces with permasyn morot, and the level pressure of helical-lobe compressor is replaced with into transformation ratio cunning than guiding valve
Valve.When convertible frequency air-conditioner works, permasyn morot drive screw compressor operating, compared to alternating current impression formula motor,
The loss of permasyn morot is low, efficiency high, power factor (PF) are high, and small volume, lightweight, more saves, makes frequency conversion empty
The Integrated part-load value of tune can get a promotion, meanwhile, compared to level pressure than guiding valve, transformation ratio guiding valve can make spiral shell
The actual pressure ratio that bar compressor is run according to air-conditioning system adjusts the interior volume specific ratio (compression ratio) of itself, so as to effectively reduce even
Avoid the situation of overcompression and under-voltage contracting to occur completely, substantially reduce the idle work loss of helical-lobe compressor, improve efficiency, save
The about energy, and then further increase the Integrated part-load value of convertible frequency air-conditioner.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is embodiment of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawings can be obtained according to the accompanying drawing of offer.
The principle schematic of the refrigerant circulation loop for the convertible frequency air-conditioner that Fig. 1 provides for the utility model embodiment.
In Fig. 1：
1- helical-lobe compressors, 2- four-way reversing valves, 3- air side heat exchangers, 4- throttle parts, 5- water-side heats, 6- first
Check valve, the check valves of 7- second, the check valves of 8- the 3rd, the check valves of 9- the 4th.
Embodiment
The utility model provides a kind of convertible frequency air-conditioner, by being improved to its building block, can make convertible frequency air-conditioner
Integrated part-load value be further improved.
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
The convertible frequency air-conditioner that the utility model embodiment is provided, specially DC frequency-changing air source heat pump unit, main bag
Include helical-lobe compressor 1, and drive screw compressor 1 air compressor motor, this air compressor motor no longer selects alternating current impression
Formula motor, but permasyn morot is changed to, compared to alternating current impression formula motor, the loss of permasyn morot
Low, efficiency high, power factor (PF) are high, and small volume, lightweight, more save, can make the synthesis sub-load of convertible frequency air-conditioner
The coefficient of performance gets a promotion, and the guiding valve of helical-lobe compressor 1, and also the level pressure no longer using level pressure than design is than guiding valve, but changes
For transformation ratio guiding valve, when convertible frequency air-conditioner works, the transformation ratio guiding valve of transformation ratio design can make helical-lobe compressor 1 according to air-conditioning
The actual pressure ratio of system operation adjusts the interior volume specific ratio of itself, and overcompression and under-voltage contracting are even completely avoided so as to effectively reduce
Situation occurs, and substantially reduces the idle work loss of helical-lobe compressor 1, improves efficiency, saved the energy so that convertible frequency air-conditioner
Integrated part-load value can further get a promotion.
The convertible frequency air-conditioner that the present embodiment is provided, by the way that air compressor motor is improved into permasyn morot, and by spiral shell
The level pressure of bar compressor 1 replaces with transformation ratio guiding valve than guiding valve, passes through the improvement of two aspects so that the Synthesis Department of convertible frequency air-conditioner
Divide load performance coefficient to obtain dual raising, farthest optimize the working effect of convertible frequency air-conditioner.In addition it is also possible to only from
Convertible frequency air-conditioner is improved on one side, for example, air compressor motor is only improved to permanent magnetism by alternating current impression formula motor
Synchronous motor, or level pressure is only improved to transformation ratio guiding valve than guiding valve, convertible frequency air-conditioner can be also improved to a certain extent
Integrated part-load value.
As shown in figure 1, the present embodiment provide convertible frequency air-conditioner in, be provided with refrigerant circulation loop helical-lobe compressor 1,
Four-way reversing valve 2, air side heat exchanger 3, throttle part 4 and water-side heat 5, these parts are sequentially communicated by pipeline.This system
Refrigerant cycle loop can not only meet refrigeration demand, can also meet heating needs, so the refrigerant circulation loop can be with
For refrigeration cycle, or to heat circulation loop.
In the convertible frequency air-conditioner provided for further optimisation technique scheme, the present embodiment, in addition to：Refrigerant is arranged on to follow
In loop back path, and it is located at respectively between air side heat exchanger 3 and throttle part 4, between throttle part 4 and water-side heat 5, and permits
Perhaps refrigerant flows to the first check valve 6 and the second check valve 7 of water-side heat 5 from air side heat exchanger 3；Refrigerant is arranged on to follow
In loop back path, and it is located at respectively between water-side heat 5 and throttle part 4, between throttle part 4 and air side heat exchanger 3, and permits
Perhaps refrigerant flows to the 3rd check valve 8 and the 4th check valve 9 of air side heat exchanger 3 from water-side heat 5, also, the 3rd unidirectional
Valve 8 is arranged in parallel with the second check valve 7, and the 4th check valve 9 is arranged in parallel with the first check valve 6, as shown in Figure 1.By above-mentioned
The setting of structure, it both can be refrigeration cycle to enable to refrigerant circulation loop, or heat circulation loop, make
User when with different demands, can flexible switch operating state.
Specifically, refrigeration cycle is：After refrigerant compresses through helical-lobe compressor 1, the refrigerant gas of HTHP
Enter four-way reversing valve 2 from the exhaust outlet of helical-lobe compressor 1, air side heat exchanger 3 is entered back into afterwards and air is exchanged heat, is cooled down
Refrigerant afterwards passes through the first check valve 6, by liquid refrigerant of the throttling of throttle part 4 for low-temp low-pressure, then by second
Check valve 7, is exchanged heat into water-side heat 5 and water, provides a user the refrigerant gas after chilled water, last evaporation endothermic
Body returns to the air entry of helical-lobe compressor 1, completes a complete kind of refrigeration cycle.
Heating circulation loop is：After refrigerant compresses through helical-lobe compressor 1, the refrigerant gas of HTHP is from screw rod pressure
The exhaust outlet of contracting machine 1 enters four-way reversing valve 2 (connection of the switching pipeline of four-way reversing valve 2), and the He of water-side heat 5 is entered back into afterwards
Water is exchanged heat, and provides a user hot water, and the refrigerant after cooling passes through the 3rd check valve 8, is low by the throttling of throttle part 4
The liquid refrigerant of warm low pressure, then by the 4th check valve 9, exchanged heat into air side heat exchanger 3 and air, finally evaporation is inhaled
Refrigerant gas after heat returns to the air entry of helical-lobe compressor 1, completes one and complete heats circulation.
In above-mentioned refrigeration and heat circulation, the pressure of inspiration(Pi) and pressure at expulsion of air-conditioner set detection helical-lobe compressor 1, and
The ratio (actual pressure ratio) of pressure at expulsion and pressure of inspiration(Pi) is calculated, according to the actual inside transformation ratio of pressure ratio adjusting screw rod compressor 1
The position of guiding valve, so that the interior volume specific ratio and actual pressure ratio in helical-lobe compressor 1 are adapted, reduction even completely avoids overcompression
Occur with the situation of under-voltage contracting, it is ensured that the runnability of helical-lobe compressor 1 is optimal.
Specifically, the present embodiment provide convertible frequency air-conditioner during work, using Integrated part-load value as
Example, including following 4 operating modes：
Operating mode A：Air-conditioner set operating condition is 100% load, 35 DEG C of environment dry-bulb temperature, 7 DEG C of leaving water temperature；
Operating mode B：Air-conditioner set operating condition is 75% load, 31.5 DEG C of environment dry-bulb temperature, 7 DEG C of leaving water temperature；
Operating mode C：Air-conditioner set operating condition is 50% load, 28 DEG C of environment dry-bulb temperature, 7 DEG C of leaving water temperature；
Operating mode D：Air-conditioner set operating condition is 25% load, 24.5 DEG C of environment dry-bulb temperature, 7 DEG C of leaving water temperature.
Air-conditioner set is operated under operating mode A, the pressure of inspiration(Pi) and pressure at expulsion of air-conditioner set detection helical-lobe compressor 1, and
The ratio a1 (actual pressure ratio a1) of pressure at expulsion and pressure of inspiration(Pi) is calculated, inside actual pressure ratio a1 adjusting screw rods compressor 1
Transformation ratio spool position be located at first position so that interior volume specific ratio a2 in helical-lobe compressor 1 and actual pressure ratio a1 is adaptable,
So as to reduce the situation generation for even completely avoiding the overcompression of helical-lobe compressor 1 and under-voltage contracting, it is ensured that the maneuverability of helical-lobe compressor 1
Can be optimal.
Air-conditioner set is operated under operating mode B, the pressure of inspiration(Pi) and pressure at expulsion of air-conditioner set detection helical-lobe compressor 1, and
The ratio b1 (actual pressure ratio b1) of pressure at expulsion and pressure of inspiration(Pi) is calculated, inside actual pressure ratio b1 adjusting screw rods compressor 1
Transformation ratio spool position be located at the second place so that interior volume specific ratio b2 in helical-lobe compressor 1 and actual pressure ratio b1 is adaptable,
So as to reduce the situation generation for even completely avoiding the overcompression of helical-lobe compressor 1 and under-voltage contracting, it is ensured that the maneuverability of helical-lobe compressor 1
Can be optimal.
Air-conditioner set is operated under operating mode C, the pressure of inspiration(Pi) and pressure at expulsion of air-conditioner set detection helical-lobe compressor 1, and
The ratio c1 (actual pressure ratio c1) of pressure at expulsion and pressure of inspiration(Pi) is calculated, inside actual pressure ratio c1 adjusting screw rods compressor 1
Transformation ratio spool position be located at the 3rd position so that interior volume specific ratio c2 in helical-lobe compressor 1 and actual pressure ratio c1 is adaptable,
So as to reduce the situation generation for even completely avoiding the overcompression of helical-lobe compressor 1 and under-voltage contracting, it is ensured that the maneuverability of helical-lobe compressor 1
Can be optimal.
Air-conditioner set is operated under operating mode D, the pressure of inspiration(Pi) and pressure at expulsion of air-conditioner set detection helical-lobe compressor 1, and
The ratio d1 (actual pressure ratio d1) of pressure at expulsion and pressure of inspiration(Pi) is calculated, inside actual pressure ratio d1 adjusting screw rods compressor 1
Transformation ratio spool position be located at the 4th position so that interior volume specific ratio d2 in helical-lobe compressor 1 and actual pressure ratio d1 is adaptable,
So as to reduce the situation generation for even completely avoiding the overcompression of helical-lobe compressor 1 and under-voltage contracting, it is ensured that the maneuverability of helical-lobe compressor 1
Can be optimal.
Each part is described by the way of progressive in this specification, what the structure of each part was stressed is
With the difference of existing structure, the entirety and part-structure of convertible frequency air-conditioner can be obtained by combining the structure of above-mentioned some
Arrive.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or new using this practicality
Type.A variety of modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can in other embodiments be realized in the case where not departing from spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (3)
1. guiding valve is provided with a kind of convertible frequency air-conditioner, including helical-lobe compressor and air compressor motor, the helical-lobe compressor, its
It is characterised by, the air compressor motor is permasyn morot, the guiding valve is that can make the helical-lobe compressor foundation
The actual pressure ratio of operation adjusts the transformation ratio guiding valve of interior volume specific ratio.
2. convertible frequency air-conditioner according to claim 1, it is characterised in that set in the refrigerant circulation loop of the convertible frequency air-conditioner
It is equipped with the helical-lobe compressor, four-way reversing valve, air side heat exchanger, throttle part and water-side heat.
3. convertible frequency air-conditioner according to claim 2, it is characterised in that also include：
Be arranged in the refrigerant circulation loop, and respectively be located between the air side heat exchanger and the throttle part, institute
State between throttle part and the water-side heat, and allow the refrigerant to flow to the water side from the air side heat exchanger and change
The first check valve and the second check valve of hot device；
Be arranged in the refrigerant circulation loop, and respectively be located between the water-side heat and the throttle part, institute
State between throttle part and the air side heat exchanger, and allow the refrigerant to flow to the wind side from the water-side heat and change
3rd check valve of hot device and the 4th check valve, the 3rd check valve are arranged in parallel with second check valve, and the described 4th
Check valve is arranged in parallel with first check valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720138159.9U CN206593329U (en) | 2017-02-15 | 2017-02-15 | A kind of convertible frequency air-conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720138159.9U CN206593329U (en) | 2017-02-15 | 2017-02-15 | A kind of convertible frequency air-conditioner |
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| Publication Number | Publication Date |
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| CN206593329U true CN206593329U (en) | 2017-10-27 |
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| CN201720138159.9U Active CN206593329U (en) | 2017-02-15 | 2017-02-15 | A kind of convertible frequency air-conditioner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112033036A (en) * | 2020-08-17 | 2020-12-04 | 珠海格力电器股份有限公司 | Refrigerating system, control method and air conditioner |
-
2017
- 2017-02-15 CN CN201720138159.9U patent/CN206593329U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112033036A (en) * | 2020-08-17 | 2020-12-04 | 珠海格力电器股份有限公司 | Refrigerating system, control method and air conditioner |
| CN112033036B (en) * | 2020-08-17 | 2024-02-23 | 珠海格力电器股份有限公司 | Refrigerating system, control method and air conditioner |
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