CN204902337U - A electronic expansion valve for on -vehicle air conditioning system - Google Patents
A electronic expansion valve for on -vehicle air conditioning system Download PDFInfo
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- CN204902337U CN204902337U CN201520694789.5U CN201520694789U CN204902337U CN 204902337 U CN204902337 U CN 204902337U CN 201520694789 U CN201520694789 U CN 201520694789U CN 204902337 U CN204902337 U CN 204902337U
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Abstract
The utility model discloses an electronic expansion valve for on -vehicle air conditioning system mainly comprises disk seat, plunger, valve rod, the plunger top is provided with the plunger spring, the plunger bottom sets up the back valve rod, the valve rod bottom is provided with the needle valve, the needle valve bottom is provided with the spring, the disk seat top outside is provided with the coil, disk seat middle part one side is provided with the entry, the disk seat bottom is provided with the export. The utility model has the advantages of simple and reasonable structure, to quick, the accurate and effectual regulation of on -vehicle air conditioning system flow, improved the energy -conservation nature of system, complied with air conditioner control system mechatronic development trend.
Description
Technical field
The utility model relates to mounted air conditioner system technical field, particularly relates to a kind of electric expansion valve for mounted air conditioner system.
Background technology
The throttling arrangement that current air conditioning for automobiles adopts is heating power expansion valve, although heating power expansion valve can regulate the flow of cold-producing medium automatically, its shortcoming is also very significant:
(1) long to the time delay of degree of superheat response, particularly bulk delay.The superheated vapor at evaporator outlet place first passes to temperature-sensitive incrustation heat, and temperature-sensitive incrustation inherently has larger thermal inertia, causes certain bulk delay, and temperature-sensitive incrustation passes to temperature sensing medium heat, and this creates again further delay.The result postponed can cause heating power expansion valve alternately hold large or turn down, and namely produces oscillatory occurences.When expansion valve leaves too much, the evaporator outlet degree of superheat is on the low side, and pressure of inspiration(Pi) rises; When valve leaves too small, evaporimeter feed flow is not enough, and pressure of inspiration(Pi) reduces.This all can have a negative impact to the economy of whole system and security.
(2) adjustable range is limited.Because the deflection of the diaphragm be connected with valve rod is limited, make the moving displacement of valve rod less, therefore flow adjustment range is little.
(3) degree of regulation is low.Executing agency's diaphragm of heating power expansion valve is due to the factor such as machining accuracy and installation, and sensitivity is out of shape in the distortion that can produce and impact, therefore is difficult to reach higher degree of regulation.
Utility model content
For deficiencies such as the response time delay, the adjustable range finite sum degree of regulation that exist when overcoming the heating power expansion valve application in existing mounted air conditioner system are low, the purpose of this utility model is that providing a kind of regulates fast, accurately and effectively to mounted air conditioner system flow, the energy saving of raising system, complies with a kind of electric expansion valve for mounted air conditioner system of air-conditioner control system electromechanical integration development trend.
For achieving the above object, the technical solution of the utility model is a kind of electric expansion valve for mounted air conditioner system, primarily of valve seat, plunger, valve rod composition, described plunger head is provided with plunger spring, and described plunger base arranges rear valve rod, and described stem bottom is provided with needle-valve, spring is provided with bottom described needle-valve, described valve seat top outer is provided with coil, and in the middle part of described valve seat, side is provided with entrance, and described seat bottom portion is provided with outlet.
The beneficial effect of the utility model employing technique scheme is:
(1) type of drive of electric expansion valve is that controller is calculated by the parameter collected sensor, sends regulating command, export the signal of telecommunication by drive plate to electric expansion valve to drive plate, drives the action of electric expansion valve.Electric expansion valve its used time from full cut-off to full-gear only needs a few second, and reaction and quick action, there is not static degree of superheat phenomenon, and closing characteristic and speed all artificially can set, be particularly suitable for the use of the violent source pump of fluctuation of operating conditions.
(2) Applicable temperature of electric expansion valve is low.For heating power expansion valve, when the temperature of the surroundings is low, the pressure change of the temperature sensing medium of its temperature-sensitive bag inside reduces greatly, has had a strong impact on adjusting function.And for electric expansion valve, its temperature sensing part is thermoelectricity occasionally thermal resistance, their same at low temperatures energy accurate responses go out the change of the degree of superheat.
(3) degree of superheat setting value of electric expansion valve is adjustable.Only need change the source code in control program, just can the setting value of modified temperature.Unlike heating power expansion valve, want the pretightning force of Field adjustment spring to carry out the setting value of modified temperature completely, thoroughly can realize far distance controlled to the regulating action of electric expansion valve.
(4) electric expansion valve can play energy-conservation effect.For between refrigeration system down period as made high and low pressure side be communicated with, then can produce so-called working medium transport phenomena, the normal temperature high voltage liquid namely in condenser will flow into evaporimeter gradually, and the temperature, pressure of evaporimeter is all raised.When again starting shooting, re-establish pressure reduction also needs to consume the extra part energy of compressor.Otherwise if cut off high and low pressure side between down period, although this maintains the low-temp low-pressure of evaporimeter, when again starting, compressor belongs to band and carries startup, and rush of current is large, also can increase the loss of energy.If but adopt electric expansion valve to solve the problem.Specific practice is: shut down seasonal expansion valve complete shut-down, prevents the high-temp liquid of condenser from flowing into evaporimeter, causes energy loss when again starting.Before start, by expansion valve standard-sized sheet, system high and low pressure side is balanced, then starts shooting.Both achieve light-load starting like this, additionally reduce the heat loss in shutdown.Adopt the adverse effect that electronic expansion valve controls compressor exhaust temperature can prevent the rising because of delivery temperature from producing systematic function, ad hoc protector can be saved again simultaneously, cost-saving.
(5) demand for development that electric expansion valve adaline is electrical integrated.Along with the emergence of Control Technique of Microcomputer, electromechanical integration has become the new trend of refrigeration system development.Electric expansion valve is controlled to develop to computermatic control by original mechanical type according to than heating power expansion valve, has fully demonstrated the development trend of electromechanical integration.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further described, but does not form any restriction of the present utility model.
As shown in Figure 1, a kind of electric expansion valve for mounted air conditioner system, form primarily of valve seat 1, plunger 2, valve rod 3, described plunger 2 top is provided with plunger spring 4, arranges rear valve rod 3 bottom described plunger 2, is provided with needle-valve 5 bottom described valve rod 3, spring 6 is provided with bottom described needle-valve 5, described valve seat 1 top outer is provided with coil 7, and in the middle part of described valve seat, side is provided with entrance 8, is provided with outlet 9 bottom described valve seat 1.
More than show and describe general principle of the present utility model and principal character.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (1)
1. the electric expansion valve for mounted air conditioner system, it is characterized in that: primarily of valve seat (1), plunger (2), valve rod (3) forms, described plunger (2) top is provided with plunger spring (4), described plunger (2) bottom arranges rear valve rod (3), described valve rod (3) bottom is provided with needle-valve (5), described needle-valve (5) bottom is provided with spring (6), described valve seat (1) top outer is provided with coil (7), in the middle part of described valve seat, side is provided with entrance (8), described valve seat (1) bottom is provided with outlet (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520694789.5U CN204902337U (en) | 2015-08-30 | 2015-08-30 | A electronic expansion valve for on -vehicle air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520694789.5U CN204902337U (en) | 2015-08-30 | 2015-08-30 | A electronic expansion valve for on -vehicle air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204902337U true CN204902337U (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520694789.5U Active CN204902337U (en) | 2015-08-30 | 2015-08-30 | A electronic expansion valve for on -vehicle air conditioning system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109764583A (en) * | 2017-11-09 | 2019-05-17 | 丹阳市日晟工业设备有限公司 | A kind of energy-saving electronic expansion valve |
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2015
- 2015-08-30 CN CN201520694789.5U patent/CN204902337U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109764583A (en) * | 2017-11-09 | 2019-05-17 | 丹阳市日晟工业设备有限公司 | A kind of energy-saving electronic expansion valve |
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