CN104964490A - Four-way valve and air-conditioning system - Google Patents
Four-way valve and air-conditioning system Download PDFInfo
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- CN104964490A CN104964490A CN201510364310.6A CN201510364310A CN104964490A CN 104964490 A CN104964490 A CN 104964490A CN 201510364310 A CN201510364310 A CN 201510364310A CN 104964490 A CN104964490 A CN 104964490A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Multiple-Way Valves (AREA)
Abstract
The invention discloses a four-way valve and an air-conditioning system. The four-way valve comprises a valve body and a valve element. The valve body is provided with a first valve port, a second valve port, a third valve port and a fourth valve port. The valve element is movably arranged in the valve body and divides the interior of the valve body into a first valve cavity, a second valve cavity and a third valve cavity. According to the valve element, when the pressure in the first valve cavity is lower than the pressure in the third valve cavity, the valve element moves from the third valve cavity to the first valve cavity so that the first valve port can be communicated with the fourth valve port, and the second valve port can be communicated with the third valve port; when the pressure in the first valve cavity is higher than the pressure in the third valve cavity, the valve element moves from the first valve cavity to the third valve cavity so that the first valve port can be communicated with the second valve port, and the third valve port can be communicated with the fourth valve port. The four-way valve is simple in structure, and noise is lowered; moreover, leakage caused by pressure change can be avoided; meanwhile, control over the air-conditioning system is simplified to a certain extent, and the performance of the air-conditioning system is improved.
Description
Technical field
The present invention relates to air-conditioning technical field, especially relate to a kind of cross valve and air-conditioning system.
Background technology
Heat switch between refrigeration mode time, refrigerant in air-conditioning system flows to and usually can change, and namely under refrigerating state, refrigerant inlet changes into refrigerant exit.The change that this refrigerant flows to can produce certain impact to the performance of air-conditioning system usually.
In the related, air-conditioning system to be carried out freezing and heat in handoff procedure refrigerant flow direction in heat exchanger and is not changed normally to adopt two four-way change-over valves to ensure.But this setup can make one of them four-way change-over valve, produce due to pressure change and leak and noise.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art.For this reason, one object of the present invention is to propose a kind of cross valve, not only can avoid the leakage produced because of pressure change, can also reduce noise to a certain extent simultaneously.
Another object of the present invention is to propose a kind of air-conditioning system, comprises above-mentioned cross valve.
The cross valve of embodiment, comprises valve body according to a first aspect of the present invention, and described valve body has the first valve port to the 4th valve port, and spool, described spool to be located at movably in described valve body and described valve inner to be separated into the first valve pocket to the 3rd valve pocket, wherein said spool is configured to when the pressure in described first valve pocket is less than the pressure in described 3rd valve pocket, described spool moves from described 3rd valve pocket towards the direction of described first valve pocket described first valve port is communicated with described 4th valve port and described second valve port is communicated with described 3rd valve port, when the pressure in described first valve pocket is greater than the pressure in described 3rd valve pocket, described spool moves from described first valve pocket towards the direction of described 3rd valve pocket described first valve port is communicated with described second valve port and described 3rd valve port is communicated with described 4th valve port.
The cross valve of embodiment according to a first aspect of the present invention, be located at movably in valve body and by valve inner by making spool and be separated into the first valve pocket to the 3rd valve pocket, and utilize the pressure differential between the first valve pocket and the 3rd valve pocket, spool is moved towards the side valve pocket that pressure is little, to realize the commutation of cross valve, thus, not only structure is simple, reduce noise, but also the leakage that produces because pressure change can be avoided, also simplify the control of air-conditioning system simultaneously to a certain extent, improve the performance of air-conditioning system.
According to some embodiments of the present invention, described spool comprises two pistons and is connected to the connector between described two pistons, described two pistons are spaced apart from each other and arrange described valve inner is separated into the first valve pocket to the 3rd valve pocket, described first valve port to described 4th valve port is all positioned at described second valve pocket, when the pressure in described first valve pocket is less than the pressure in described 3rd valve pocket, described first valve port and described 4th valve port and described second valve port separate with described 3rd valve port and described first valve port are communicated with described 4th valve port and described second valve port is communicated with described 3rd valve port by described connector, when the pressure in described first valve pocket is greater than the pressure in described 3rd valve pocket, described first valve port and described second valve port and described 3rd valve port separate with described 4th valve port and described first valve port are communicated with described second valve port and described 3rd valve port is communicated with described 4th valve port by described connector.
Further, described connector is provided with connection separator, and described connection separator is configured to described second valve port and one of them valve port in described 4th valve port and described 3rd valve port and described second valve port and another valve port in described 4th valve port separated with described first valve port and be communicated with described 3rd valve port by one of them valve port described.
Further, described second valve port to described 4th valve port is arranged side by side, and described connection separator is formed towards away from the direction protrusion of described second valve port to described 4th valve port.
Further, described connector is formed with the intercommunicating pore for being communicated with described first valve port by another valve port described.
According to some embodiments of the present invention, comprise further: the first communicating pipe, be connected to described first communicating pipe between described first valve pocket and described second valve port; Second communicating pipe, be connected to described second communicating pipe between described 3rd valve pocket and described 4th valve port.
Further, described first communicating pipe and described second communicating pipe are respectively capillary.
The air-conditioning system of embodiment according to a second aspect of the present invention, comprising: compressor, and described compressor has exhaust outlet and gas returning port; Commutation assembly, described commutation assembly has first interface to the 4th interface, one of them and described second orifice in described first interface and the 3rd interface, one of them and described 4th orifice in described first interface and the 3rd interface, described first interface is connected with described exhaust outlet; Indoor heat exchanger, the first end of described indoor heat exchanger is connected with described second interface;
According to the cross valve of the above-mentioned first aspect embodiment of the present invention, restricting element is connected with between described first valve port of wherein said cross valve and the 3rd interface of described commutation assembly, described 3rd valve port is connected with described gas returning port, and described 4th valve port is connected with the second end of described indoor heat exchanger; And outdoor heat exchanger, the first end of described outdoor heat exchanger is connected with described 4th interface, and the second end of described outdoor heat exchanger is connected with described second valve port.
The air-conditioning system of embodiment according to a second aspect of the present invention, by arranging cross valve, not only can avoid the leakage of the cross valve produced because of pressure change, reducing the noise that cross valve produces, also simplify the control of air-conditioning system simultaneously, improve the performance of air-conditioning system.
Further, described commutation assembly is four way solenoid valve.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is heating the structural representation of state according to the cross valve of the embodiment of the present invention;
Fig. 2 is according to the cross valve of the embodiment of the present invention structural representation at refrigerating state;
Fig. 3 is heating the schematic diagram of state according to the air-conditioning system of the embodiment of the present invention;
Fig. 4 is according to the air-conditioning system of the embodiment of the present invention schematic diagram at refrigerating state.
Reference numeral:
Air-conditioning system 1000;
Cross valve 100; Valve body 10; First valve port A; Second valve port B; 3rd valve port C; 4th valve port D; First valve pocket 21; Second valve pocket 22; 3rd valve pocket 23; Piston 24; Connector 25; Be communicated with separator 251; Intercommunicating pore 252; First communicating pipe 30; Second communicating pipe 40;
Compressor 200; Exhaust outlet F; Gas returning port E;
Commutation assembly 300; First interface G; Second interface H; 3rd interface I; 4th interface J;
Indoor heat exchanger 400; Outdoor heat exchanger 500; Restricting element 600.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it will be appreciated that, term " on ", D score, " interior ", " outward ", etc. instruction orientation or position relationship be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can comprise the first and second features and directly contact, also can comprise the first and second features and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is less than second feature.
Disclosing hereafter provides many different embodiments or example is used for realizing different structure of the present invention.Of the present invention open in order to simplify, hereinafter the parts of specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the present invention.In addition, the present invention can in different example repeat reference numerals and/or letter.This repetition is to simplify and clearly object, itself does not indicate the relation between discussed various embodiment and/or setting.In addition, the various specific technique that the invention provides and the example of material, but those of ordinary skill in the art can recognize the property of can be applicable to of other techniques and/or the use of other materials.
In addition, fisrt feature described below second feature it " on " structure can comprise the embodiment that the first and second features are formed as directly contact, also can comprise other feature and be formed in embodiment between the first and second features, such first and second features may not be direct contacts.
Below with reference to the accompanying drawings describe the cross valve 100 according to the embodiment of the present invention, cross valve 100 can be applicable in air-conditioning system 1000.When air-conditioning system 1000 is when freezing and switch between heating mode, cross valve 100 can realize commutating so that the flow direction of refrigerant in refrigerant flow remains constant.
As Figure 1-Figure 2, the cross valve 100 of embodiment, can comprise valve body 10 and spool according to a first aspect of the present invention.Wherein, valve body 10 has the first valve port A, the second valve port B, the 3rd valve port C and the 4th valve port D, the first valve port A to the 4th valve port D can respectively with the pipeline connection in air-conditioning system 1000 so that the circulation of refrigerant.
Spool is located in valve body 10 movably, and that is, spool is transportable in valve body 10, thus, can be realized the commutation function of cross valve 100, thus be convenient to the circulation of refrigerant in air-conditioning system 1000 by the movement of spool in valve body 10.
Valve body 10 interior separation becomes the first valve pocket 21 to the 3rd valve pocket 23 by spool, wherein spool is configured to when the pressure in the first valve pocket 21 is less than the pressure in the 3rd valve pocket 23, spool moves from the 3rd valve pocket 23 towards the direction of the first valve pocket 21 first valve port A is communicated with the 4th valve port D and the second valve port B is communicated with the 3rd valve port C, as shown in Figure 1.When the pressure in the first valve pocket 21 is greater than the pressure in the 3rd valve pocket 23, spool moves from the first valve pocket 21 towards the direction of the 3rd valve pocket 23 first valve port A is communicated with the second valve port B and the 3rd valve port C is communicated with the 4th valve port D, as shown in Figure 2.
Such as, when air-conditioning system 1000 is in heating mode, the pressure of the first valve pocket 21 is less than the pressure of the 3rd valve pocket 23, and spool moves towards the direction of the first valve pocket 21; When air-conditioning system 1000 is in refrigeration mode, the pressure of the first valve pocket 21 is greater than the pressure of the 3rd valve pocket 23, and spool moves towards the direction of the 3rd valve pocket 23.Thus, removable in valve body 10 of spool is driven by the pressure differential between the first valve pocket 21 and the 3rd valve pocket 23, thus by the removable commutation that realize cross valve 100 of spool in valve body 10, which avoid solenoid and the isostructural setting of pilot valve, decrease moving component, not only structure is simple, avoid the leakage produced because of pressure change, reduce noise simultaneously, in addition because cross valve 100 controls without the need to energising, also simplify the control of air-conditioning system 1000.
It should be noted that, for the ease of clearly describing the reversing principle of cross valve 100, cross valve 100 being combined in air-conditioning system 1000 being described in detail below.
The air-conditioning system 1000 of embodiment according to a second aspect of the present invention, can comprise compressor 200, commutation assembly 300, indoor heat exchanger 400, outdoor heat exchanger 500 and cross valve 100.Wherein, compressor 200 has exhaust outlet F and gas returning port E, and it is inner that refrigerant enters into compressor 200 from gas returning port E, forms the refrigerant of HTHP, discharge from exhaust outlet F after compressor 200 compresses.Need to be described, the structure of compressor 200 and operation principle etc. are prior art, are no longer described in detail here.
Commutation assembly 300 has first interface G to the 4th interface J, wherein first interface G is communicated with the second interface H with one of them in the 3rd interface I, first interface G is communicated with the 4th interface J with one of them in the 3rd interface I, that is, when first interface G is communicated with the second interface H, 3rd interface I is communicated with the 4th interface J, and when first interface G is communicated with the 4th interface J, the second interface H is communicated with the 3rd interface I.First interface G is connected with exhaust outlet F, and thus, the refrigerant of the exhaust outlet F discharge of compressor 200 can be passed through first interface G and enters into commutation assembly 300.
Alternatively, the assembly 300 that commutates is four way solenoid valve.When commutation assembly 300 power-off, first interface G is communicated with the second interface H, and the 4th interface J is communicated with the 3rd interface I, and when the assembly 300 that commutates is energized, first interface G is communicated with the 4th interface J, and the 3rd interface I is communicated with the second interface H.Or when commutation assembly 300 power-off, first interface G is communicated with the 4th interface J, and the second interface H is communicated with the 3rd interface I, when the assembly 300 that commutates is energized, first interface G is communicated with the second interface H, and the 4th interface J is communicated with the 3rd interface I.But be understandable that, commutation assembly 300 can be formed as other elements, can realize commutating as long as there is first interface G to the 4th interface J.
The first end of indoor heat exchanger 400 (such as, left end in Fig. 3 with Fig. 4) be connected with the second interface H, second end of the 4th valve port D and indoor heat exchanger 400 (such as, right-hand member in Fig. 3 with Fig. 4) be connected, thus indoor heat exchanger 400 is connected in refrigerant loop so that refrigerant flows through indoor heat exchanger 400 and indoor environment heat-shift.
Be connected with restricting element 600 between first valve port A of cross valve 100 and the 3rd interface I of commutation assembly 300, restricting element 600 can be used for the coolant throttle step-down in refrigerant flow.3rd valve port C is connected with gas returning port E, and refrigerant turns back to compressor 200 by the 3rd valve port C and through the gas returning port E of compressor 200.
The first end of outdoor heat exchanger 500 (such as, left end in Fig. 3 with Fig. 4) be connected with the 4th interface J, second end of outdoor heat exchanger 500 (such as, right-hand member in Fig. 3 with Fig. 4) be connected with the second valve port B, thus outdoor heat exchanger 500 is connected in refrigerant loop so that refrigerant flows through outdoor heat exchanger 500 and outdoor environment heat-shift.
Such as, as shown in figures 1 and 3, when air-conditioning system 1000 is in heating mode, the pressure of the first valve pocket 21 of cross valve 100 is less than the pressure of the 3rd valve pocket 23, now spool moves the first valve port A is communicated with the 4th valve port D towards the direction of the first valve pocket 21, second valve port B is communicated with the 3rd valve port C, the first interface G of commutation assembly 300 is communicated with the second interface H, 3rd interface I is communicated with the 4th interface J, the refrigerant of the HTHP of discharging through the exhaust outlet F of compressor 200 enters into commutation assembly 300 through first interface G, then flow out from the second interface H and flow to indoor heat exchanger 400, with indoor environment heat exchange in indoor heat exchanger 400, the refrigerant of the HTHP after heat exchange enters into cross valve 100 through the 4th valve port D, and flow out from the first valve port A, then restricting element 600 is entered into, the refrigerant of low-temp low-pressure is formed after restricting element 600 reducing pressure by regulating flow, refrigerant is through the 3rd interface I and the 4th interface J, enter into outdoor heat exchanger 500, refrigerant is after outdoor heat exchanger 500 with outdoor environment heat exchange, heat exchanger 500 flows out outdoor subsequently, through the second valve port B and the 3rd valve port C, and turn back to compressor 200 through the gas returning port E of compressor 200, reciprocal with this, formation heats circulation.
As shown in Figure 2 and Figure 4, when air-conditioning system 1000 is in refrigeration mode, the pressure of the first valve pocket 21 of cross valve 100 is greater than the pressure of the 3rd valve pocket 23, now spool moves the first valve port A is communicated with the second valve port B towards the direction of the 3rd valve pocket 23, 3rd valve port C is communicated with the 4th valve port D, second interface H of commutation assembly 300 is communicated with the 3rd interface I, first interface G is communicated with the 4th interface J, the refrigerant of the HTHP of discharging through the exhaust outlet F of compressor 200 enters into commutation assembly 300 through first interface G, flow out from the 4th interface J, then outdoor heat exchanger 500 is entered into, in outdoor heat exchanger 500 and outdoor environment heat exchange, cross valve 100 is entered into through the second valve port B after refrigerant heat exchanger 500 outflow outdoor of the HTHP after heat exchange, and flow out from the first valve port A, then restricting element 600 is flowed to, the refrigerant of low-temp low-pressure is formed after restricting element 600 reducing pressure by regulating flow, commutation assembly 300 is entered into through the 3rd interface I, and flow out from the second interface H, then indoor heat exchanger 400 is flowed to, with indoor environment heat exchange in indoor heat exchanger 400, the refrigerant of the low-temp low-pressure after heat exchange is after heat exchanger 400 flows out indoor, cross valve 100 is entered into through the 4th valve port D, flow out from the 3rd valve port C subsequently, compressor 200 is turned back to through the gas returning port E of compressor 200, reciprocal with this, form kind of refrigeration cycle.
Be understandable that, no matter air-conditioning system 1000 is in refrigeration or heating mode, whether four-way change-over valve commutates, first valve port A is always high pressure refrigerant interface, 3rd valve port C is always low pressure refrigerant interface, and the refrigerant flow direction in refrigerant flow remains constant, thus improve the performance of air-conditioning system 1000 to a certain extent.
According to the air-conditioning system 1000 of the embodiment of the present invention, by arranging cross valve 100, not only can avoid the leakage of the cross valve 100 produced because of pressure change, reducing the noise that cross valve 100 produces, also simplify the control of air-conditioning system 1000 simultaneously, improve the performance of air-conditioning system 1000.
According to the cross valve 100 of the embodiment of the present invention, to be located at movably in valve body 10 by making spool and to become the first valve pocket 21 to the 3rd valve pocket 23 valve body 10 interior separation, and utilize the pressure differential between the first valve pocket 21 and the 3rd valve pocket 23, spool is moved towards the side valve pocket that pressure is little, to realize the commutation of cross valve 100, thus, not only structure is simple, reduce noise, but also the leakage that produces because pressure change can be avoided, also simplify the control of air-conditioning system 1000 simultaneously to a certain extent, improve the performance of air-conditioning system 1000.
According to some embodiments of the present invention, the connector 25 that spool comprises two pistons 24 and is connected between two pistons 24, two pistons 24 are spaced apart from each other and arrange to become the first valve pocket 21 to the 3rd valve pocket 23 valve body 10 interior separation, thus, first valve pocket 21 and the 3rd valve pocket 23 lay respectively at the both sides of two pistons 24, and the second valve pocket 22 is between two pistons 24.
First valve port A is all positioned at the second valve pocket 22 to the 4th valve port D, when the pressure in the first valve pocket 21 is less than the pressure in the 3rd valve pocket 23, first valve port A and the 4th valve port D and the second valve port B separate with the 3rd valve port C and the first valve port A are communicated with the 4th valve port D and the second valve port B is communicated with the 3rd valve port C by connector 25, when the pressure in the first valve pocket 21 is greater than the pressure in the 3rd valve pocket 23, first valve port A and the second valve port B and the 3rd valve port C separate with the 4th valve port D and the first valve port A are communicated with the second valve port B and the 3rd valve port C is communicated with the 4th valve port D by connector 25.Thus, according to the pressure differential between the first valve pocket 21 and the 3rd valve pocket 23, piston 24 and the connector 25 be connected between piston 24 move to make the first valve port A be communicated with in the 4th valve port D with the second valve port B in valve body 10,3rd valve port C and the second valve port B are communicated with another in the 4th valve port D, thus realize the commutation of cross valve 100.
Further, connector 25 is provided with and is communicated with separator 251, is communicated with separator 251 and is configured to the second valve port B and one of them valve port in the 4th valve port D and the 3rd valve port C and the second valve port B and another valve port in the 4th valve port D separated with the first valve port A and be communicated with the 3rd valve port C by one of them valve port.Such as, when air-conditioning system 1000 is in heating mode, first valve port A is communicated with the 4th valve port D, and the second valve port B is communicated with the 3rd valve port C, and the first valve port A be communicated with keeps apart with the 4th valve port D and the second valve port B be communicated with and the 3rd valve port C by connection separator 251.When air-conditioning system 1000 is in refrigeration mode, first valve port A is communicated with the second valve port B, 3rd valve port C is communicated with the 4th valve port D, and the first valve port A be communicated with keeps apart with the second valve port B and the 3rd valve port C be communicated with and the 4th valve port D by connection separator 251.Thus, can so that refrigerant circulates in correspondingly pipeline.
Further, the second valve port B is arranged side by side to the 4th valve port D, thus is convenient to the 3rd valve port C and is communicated with the commutation between the second valve port B and the 4th valve port D.Be communicated with separator 251 and protrude formation towards the direction away from the second valve port B to the 4th valve port D, thus be convenient to form the 4th valve pocket protruded, so that the 3rd valve port C realizes being communicated with by the 4th valve pocket with one of them in the 4th valve port D with the second valve port B.
Further, connector 25 is formed with the intercommunicating pore 252 for being communicated with the first valve port A by another valve port above-mentioned, that is, connector 25 is formed with the intercommunicating pore 252 for being communicated with the first valve port A with one of them valve port in the 4th valve port D by the second valve port B.Such as, when air-conditioning system 1000 is in heating mode, be communicated with by intercommunicating pore 252 between the first valve port A with the 4th valve port D, be communicated with by the 4th valve pocket between the second valve port B with the 3rd valve port C, as shown in Figure 1.When air-conditioning system 1000 is in refrigeration mode, the first valve port A is communicated with by intercommunicating pore 252 with the second valve port B, and the 3rd valve port C is communicated with by the 4th valve pocket with the 4th valve port D, as shown in Figure 2.
According to some embodiments of the present invention, cross valve 100 comprised for the first communicating pipe 30 and the second communicating pipe 40 further, and be wherein connected to the first communicating pipe 30 between first valve pocket 21 and the second valve port B, thus, the first valve pocket 21 is identical with the pressure at the second valve port B place.Be connected to second communicating pipe 40 between the 3rd valve pocket 23 and the 4th valve port D, thus, the 3rd valve pocket 23 is identical with the pressure at the 4th valve port D place.Because the pressure between the second valve port B and the 4th valve port D is different, therefore, the first valve pocket 21 is also different from the pressure of the 3rd valve pocket 23.Such as, as shown in Figure 3, when air-conditioning system 1000 heats, the refrigerant of HTHP is through the 4th valve port D, and the refrigerant of low-temp low-pressure is through the second valve port B.As shown in Figure 4, when air-conditioning system 1000 is freezed, the refrigerant of HTHP is through the second valve port B, and the refrigerant of low-temp low-pressure is through the 4th valve port D.Therefore, no matter air-conditioning system 1000 is freezed or heats, first valve pocket 21 is different all the time from the pressure of the 3rd valve pocket 23, thus is moved towards the side valve pocket that pressure is little to make spool by the pressure differential between the first valve pocket 21 and the 3rd valve pocket 23, finally realizes the commutation of cross valve 100.
Further, the first communicating pipe 30 and the second communicating pipe 40 be respectively capillary, not only structure is simple, and saves cost.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (9)
1. a cross valve, is characterized in that, comprising:
Valve body, described valve body has the first valve port to the 4th valve port; With
Spool, described spool to be located at movably in described valve body and described valve inner to be separated into the first valve pocket to the 3rd valve pocket, wherein said spool is configured to when the pressure in described first valve pocket is less than the pressure in described 3rd valve pocket, described spool moves from described 3rd valve pocket towards the direction of described first valve pocket described first valve port is communicated with described 4th valve port and described second valve port is communicated with described 3rd valve port, when the pressure in described first valve pocket is greater than the pressure in described 3rd valve pocket, described spool moves from described first valve pocket towards the direction of described 3rd valve pocket described first valve port is communicated with described second valve port and described 3rd valve port is communicated with described 4th valve port.
2. cross valve according to claim 1, it is characterized in that, described spool comprises two pistons and is connected to the connector between described two pistons, described two pistons are spaced apart from each other and arrange described valve inner is separated into the first valve pocket to the 3rd valve pocket, described first valve port to described 4th valve port is all positioned at described second valve pocket
When the pressure in described first valve pocket is less than the pressure in described 3rd valve pocket, described first valve port and described 4th valve port and described second valve port separate with described 3rd valve port and described first valve port are communicated with described 4th valve port and described second valve port is communicated with described 3rd valve port by described connector, when the pressure in described first valve pocket is greater than the pressure in described 3rd valve pocket, described first valve port and described second valve port and described 3rd valve port separate with described 4th valve port and described first valve port are communicated with described second valve port and described 3rd valve port is communicated with described 4th valve port by described connector.
3. cross valve according to claim 2, it is characterized in that, described connector is provided with connection separator, and described connection separator is configured to described second valve port and one of them valve port in described 4th valve port and described 3rd valve port and described second valve port and another valve port in described 4th valve port separated with described first valve port and be communicated with described 3rd valve port by one of them valve port described.
4. cross valve according to claim 3, is characterized in that, described second valve port to described 4th valve port is arranged side by side, and described connection separator is formed towards away from the direction protrusion of described second valve port to described 4th valve port.
5. cross valve according to claim 3, is characterized in that, described connector is formed with the intercommunicating pore for being communicated with described first valve port by another valve port described.
6. the cross valve according to any one of claim 1-5, is characterized in that, comprises further:
First communicating pipe, be connected to described first communicating pipe between described first valve pocket and described second valve port;
Second communicating pipe, be connected to described second communicating pipe between described 3rd valve pocket and described 4th valve port.
7. cross valve according to claim 6, is characterized in that, described first communicating pipe and described second communicating pipe are respectively capillary.
8. an air-conditioning system, is characterized in that, comprising:
Compressor, described compressor has exhaust outlet and gas returning port;
Commutation assembly, described commutation assembly has first interface to the 4th interface, one of them and described second orifice in described first interface and the 3rd interface, one of them and described 4th orifice in described first interface and the 3rd interface, described first interface is connected with described exhaust outlet;
Indoor heat exchanger, the first end of described indoor heat exchanger is connected with described second interface;
Cross valve according to any one of claim 1-7, restricting element is connected with between described first valve port of wherein said cross valve and the 3rd interface of described commutation assembly, described 3rd valve port is connected with described gas returning port, and described 4th valve port is connected with the second end of described indoor heat exchanger; And
Outdoor heat exchanger, the first end of described outdoor heat exchanger is connected with described 4th interface, and the second end of described outdoor heat exchanger is connected with described second valve port.
9. air-conditioning system according to claim 8, is characterized in that, described commutation assembly is four way solenoid valve.
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| CN104964490B (en) | 2017-07-28 |
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