CN102410678B - Heat pump type expansion valve without temperature-sensing bag - Google Patents
Heat pump type expansion valve without temperature-sensing bag Download PDFInfo
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- CN102410678B CN102410678B CN201110303354XA CN201110303354A CN102410678B CN 102410678 B CN102410678 B CN 102410678B CN 201110303354X A CN201110303354X A CN 201110303354XA CN 201110303354 A CN201110303354 A CN 201110303354A CN 102410678 B CN102410678 B CN 102410678B
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Abstract
The invention discloses a heat pump type expansion valve without a temperature-sensing bag, which is composed of a gas tank head assembly, a valve body, a valve needle assembly, a transmission rod, a spring assembly, an adjusting assembly, a valve cap, an inlet connection pipe and an outlet connection pipe, wherein the gas tank head assembly and the valve cap are respectively arranged at the upper and lower end parts of the valve body; the adjusting assembly is arranged between the valve cap and the valve body and the upper part of the adjusting assembly is connected to the lower part of the spring assembly; the upper part of the spring assembly is connected to the lower end of the transmission rod and the upper end of the transmission rod is connected to the valve needle assembly; the inlet connection pipe and the outlet connection pipe are installed on the valve body and are located blow the valve needle assembly; the gas tank head assembly is composed of a capillary tube, a gas tank cover, a diaphragm, a gas tank seat and a transmission block; the gas tank cover is matched with the gas box seat to form a cavity body, which is divided by the diaphragm to form an upper opening cavity and a lower closed cavity; two ends of the capillary tube are connected to a gas returning pipe of an air-conditioning system and the upper opening chamber respectively; the transmission block is arranged in the lower closed chamber; and the transmission block is connected with the valve needle assembly in a sealing mode. The expansion valve is provided with no temperature-sensing mechanism; however, the capillary tube is directly connected with the gas returning pipe of a compressor and the suction pressure is supplied by the compressor to directly control the expansion valve to work. Thus the expansion valve is applicable to the air-conditioning system of any refrigeration working medium and has the advantages of convenience for installation, flexibility in action and low cost.
Description
[technical field]
The present invention relates at refrigeration, heat pump type expansion valve in air-conditioning system, especially a kind of not with the temperature-sensitive bag, a kind of heat pump type expansion valve that do not carry out that working medium fills, as the there is no temperature-sensitive mechanism energy automatic regulating system refrigerant flow of directly being controlled by suction pressure of compressor.
[background technology]
The systematic schematic diagram of freon air-conditioning system comprises compressor 11, four-way change-over valve 12, outdoor heat exchanger 13, heat pump type expansion valve (pump type heat heating power expansion valve) 14, indoor heat exchanger 15 as shown in Figure 1.Pump type heat heating power expansion valve 14 is one of indispensable five large parts in the freon air-conditioning system, is mainly used to adjusting refrigerant flow rate.It is the control valve of controlling flow, is again simultaneously the bidirectional throttling valve that freezes, heats.It is arranged between two heat exchangers, and the air intake duct of its outer balance pipe and compressor joins, and remains consistent with compressor delivery pressure; Its thermometer bulb is to wrap up on the return tube of four-way change-over valve, experiences the suction temperature of evaporimeter, with the switching of automatic control expansion valve, guarantees the flow that system is certain.
The effect of pump type heat heating power expansion valve mainly contains following 4 points:
1. the effect of bidirectional balanced stream.Guard system is not in refrigeration (forward) and heats arbitrary state of (oppositely), and the two-way of expansion valve all can stably play throttling and autoregulation, reaches following 3 effects.
2. reducing pressure by regulating flow when making the refrigerant liquid of normal temperature high voltage flow through expansion valve, the cold-producing medium moist steam that becomes low-temp low-pressure enters evaporimeter, evaporation endothermic in evaporimeter, thus reach the purpose of refrigeration cool-down.
3. the corresponding suction temperature of back pressure that is communicated with compressor return air pipe according to outer balance pipe, and the temperature difference (being the variation of the refrigerant vapour degree of superheat) of the evaporator outlet temperature experienced of temperature-sensitive bag, change the open degree of expansion valve, automatically regulate the refrigerant flow that flows into evaporimeter, refrigerant flow is complementary with the thermic load of evaporimeter all the time.
4. by the control of expansion valve, make the refrigerant vapour of evaporator outlet keep certain degree of superheat, can guarantee the taking full advantage of of heat transfer area of evaporimeter, can prevent that again compressor from liquid hammer occurring and rushing the cylinder phenomenon.
The structure of pump type heat heating power expansion valve as shown in Figure 2, mainly formed by parts such as air box head parts, valve body, needle sub-assembly, drive link, regulating spring, adjusting rod, outer balance pipes, specifically comprise O shape circle 21, adjustment seat 22, spring base 23, regulating spring 24, temperature-sensitive bag 25, advance that (going out) mouthful takes over 26, drive link 27, filler line 28, drive block 29, diaphragm lid 210, capillary 211, diaphragm 212, diaphragm seat 213, outer balance pipe 214, go out that (advancing) mouthful takes over 215, needle sub-assembly 216, valve body 217, adjusting rod 218, bonnet 219.
Air box head parts mainly plays temperature-sensitive, transfer function, it is comprised of parts such as temperature-sensing pipe (thermometer bulb), capillary, gas tank lid, diaphragm, gas tank seat, driver blades, wherein diaphragm with whole air box head parts be divided into the up and down two chambeies, epicoeles be a closed container, fill appropriate refrigeration working medium (generally to fill as many with worker quality liquid by filler line in thermometer bulb, have separately that liquid cross charge, gas charge, mixing fill, absorptive charge etc., mainly require to decide according to systematic function), the full variation with thermometer bulb temperature T 0 of the pressure P of its inside changes; Cavity of resorption connects outer balance pipe and communicates with the compressor return air pipe of system, and pressure is consistent with back pressure P1.
According to the operation principle of pump type heat heating power expansion valve 14, the diaphragm of air tank head is carried out force analysis, as Fig. 3-1,3-2.In Fig. 3-1,3-2: the P0-evaporating pressure.Its size is determined by evaporating temperature.The pressure that P bullet-spring force is converted to.Its size is determined by spring controlled degree of tightness.P satisfy-is filled with the saturation pressure of working medium in the temperature-sensitive bag.Its size is determined by the height of the character of working medium in the temperature-sensitive bag and the evaporator outlet place refrigerant temperature experienced.This place omits following two power that impact is minimum: the poor power that acts on spool of the inlet and outlet pressure of PK-expansion valve is converted to the pressure to diaphragm.The pressure that P membrane-membrane sheet elastic force is converted to.
Can find out from Fig. 3-1,3-2: below acting on diaphragm, 2 pressure: P0, P bullet are arranged, these two power are closed valve; And having 1 pressure: P full above acting on diaphragm, this power is opened valve; When P full=during the P0+P bullet, valve is in the poised state of a certain aperture.
When the thermic load of evaporimeter increases, cause that the degree of superheat of evaporator outlet place cold-producing medium increases, the temperature experienced of temperature-sensitive bag raises so, corresponding saturation pressure P is full also increases for it, form P full＞the P0+P bullet.So just cause diaphragm to promote drive link and move down, the aperture of valve is increased, refrigerant flow increases, and refrigerating capacity increases, thereby is complementary with the thermic load of evaporimeter.At this moment valve is in again a new poised state.
On the contrary, when the thermic load of evaporimeter reduces, cause that the degree of superheat of evaporator outlet place cold-producing medium reduces, the temperature experienced of temperature-sensitive bag reduces so, and corresponding saturation pressure P is full also reduces for it, form P full＜the P0+P bullet.So just cause spring to promote to move on drive link, the aperture of valve is reduced, refrigerant flow reduces, and refrigerating capacity reduces, thereby is complementary with the thermic load of evaporimeter.At this moment valve is in again another new poised state.
So the pump type heat heating power expansion valve is to adjust the aperture of valve according to the variation of the refrigerant superheat degree of evaporator outlet, reach the cold of automatic adjusting refrigerating plant to satisfy the constantly demand of variation of extraneous thermic load.
The pump type heat heating power expansion valve of this structure mainly has the following disadvantages:
1. the working medium that fills in the temperature-sensitive bag temperature---pressure characteristic directly affects the performance of expansion valve, it plays a part key performance to expansion valve, therefore filling technology is also the present trade secret of various countries, each enterprise in the world, the quality of expansion valve performance is mainly reflected in the height of the technology of filling, but this technology grasp is more difficult;
2. concerning certain class expansion valve, because the working medium that fills in the temperature-sensitive bag is invariable, therefore the characteristic of such expansion valve can only be useful in its refrigerated air-conditioning system of the same type in, expansion valve just has the classification of different system like this, use etc. with, R407C with, R134a as R22, of a great variety, versatility is poor;
3. must have the air intake duct of an outer balance pipe and compressor to join, when heating with the switching exactly of guaranteeing expansion valve and system, expansion valve can oppositely work, and therefore, can bring inconvenience to installation, has also increased the manufacturing cost of product.
[summary of the invention]
Purpose of the present invention solves the problems of the prior art exactly, a kind of heat pump type expansion valve of noninductive thermometer bulb is proposed, do not carry out filling of working medium, not only can save the filled technical process of the air tank head that is difficult to grasp, be applicable to the refrigerated air-conditioning system of any working medium, and make installation process not influenced by ambient temperature, easy for installation.
for achieving the above object, the present invention proposes a kind of heat pump type expansion valve of noninductive thermometer bulb, it is by the air tank head assembly, valve body, the needle assembly, drive link, spring assembly, adjusting part, bonnet, entrance sleeve and discharge connection form, the upper end of described valve body is provided with the air tank head assembly, the bottom of valve body is provided with bonnet, be provided with adjusting part between bonnet and valve body, adjusting part top is connected to the bottom of spring assembly, the top of spring assembly is connected to the lower end of drive link, the upper end of drive link is connected to the needle assembly, entrance sleeve and discharge connection are arranged on valve body and are positioned at the below of needle assembly, described air tank head assembly is by capillary, the gas tank lid, diaphragm, gas tank seat and drive block form, but there is no temperature-sensing pipe, the gentle block of gas tank lid coordinates the formation cavity, diaphragm is separated into upper open cavity and lower enclosed cavity with cavity, an end capillaceous directly accesses the muffler of air-conditioning system, the other end is connected to open cavity, be provided with drive block in lower enclosed cavity, described drive block is connected with the needle component sealing.This expansion valve does not have temperature-sensing pipe, do not carry out filling of working medium yet, without temperature-sensitive mechanism, but by capillary directly and the air-conditioning system muffler join, directly control expansion valve work by back pressure, be exactly to control with pressure to replace traditional temperature to control on principle, and improve to some extent on valve body structure.
As preferably, described needle assembly is valve body upper end sealing, and is provided with the 2nd O shape circle between needle assembly, drive block, valve body three, further improved sealing effectiveness.
As preferably, described spring assembly comprises spring base, spring and spring housing, and an end of described spring mounts elastically, and the other end is arranged on spring housing, and the lower end linking springs cover of drive link is simple in structure, easy for installation, and telescopic spring is stable.
As preferably, described adjusting part comprises adjustment seat and is arranged on adjusting rod on adjustment seat, the bottom of described adjusting rod linking springs seat, and adjustment seat is threaded in valve body lower end section, and bonnet is threaded in the bottom of adjustment seat, and is simple in structure, easy to adjust.
As preferably, be provided with an O shape circle between described adjusting rod and adjustment seat, further improved sealing effectiveness.
As preferably, the upper end of described adjusting rod is conical, and the bottom of spring base is provided with the conical socket that matches with taper shape, and is easy for installation.
beneficial effect of the present invention: the present invention has cancelled temperature-sensing pipe, remove the air tank head that is difficult to grasp from and filled technical process, not only easy for installation, be not subjected to the impact of environment temperature, and greatly reduced description, can realize environmental protection production, and be applicable to the refrigerated air-conditioning system of any working medium, directly the back pressure of cited system is controlled, be active in one's movements, without the conventional expanded valve because produce the action phenomenon that lags by " back pressure → suction temperature → temperature-sensing pipe temperature → temperature-sensing pipe pressure → air tank head pressure " a series of transmission, therefore can not cause and the fluctuation of the refrigerating capacity that produces.Simultaneously, saved outer balance pipe and temperature-sensing pipe, install more convenient, and, further reduced cost.The present invention is specially adapted to back pressure and changes refrigerated air-conditioning system frequently, as automotive air-conditioning system, the convertible frequency air-conditioner decorum etc.
Feature of the present invention and advantage will be elaborated by reference to the accompanying drawings by embodiment.
[description of drawings]
Fig. 1 is the systematic schematic diagram of freon air-conditioning system;
Fig. 2 is the structural representation of heat pump type expansion valve in prior art;
Fig. 3-1st, the stressed schematic diagram of the diaphragm of the air tank head of heat pump type expansion valve in prior art;
Fig. 3-2nd, the force analysis schematic diagram of the diaphragm of the air tank head of heat pump type expansion valve in prior art;
Fig. 4 is the structural representation of heat pump type expansion valve of the present invention;
Fig. 5-1st, the stressed schematic diagram of the air tank head of heat pump type expansion valve of the present invention;
Fig. 5-2nd, the force analysis schematic diagram of the air tank head of heat pump type expansion valve of the present invention.
[specific embodiment]
as shown in Figure 4, the heat pump type expansion valve of noninductive thermometer bulb, by the air tank head assembly, valve body 416, needle assembly 46, drive link 414, spring assembly, adjusting part, bonnet 418, advance (going out) mouthful adapter 45 and go out (advancing) mouthful adapter 413 to form, the upper end of described valve body 416 is provided with the air tank head assembly, the bottom of valve body 416 is provided with bonnet 418, be provided with adjusting part between bonnet 418 and valve body 416, adjusting part top is connected to the bottom of spring assembly, the top of spring assembly is connected to the lower end of drive link 414, the upper end of drive link 414 is connected to needle assembly 46, advance (going out) mouthful adapter 45 and go out the below that (advancing) mouthful adapter 413 is arranged on valve body 416 and is positioned at needle assembly 46, described air tank head assembly is by capillary 410, gas tank lid 49, diaphragm 411, gas tank seat 412 and drive block 48 form, the gentle block 412 of gas tank lid 49 coordinates the formation cavity, diaphragm 411 is separated into upper open cavity and lower enclosed cavity with cavity, one end of capillary 410 is connected to the muffler of air-conditioning system, the other end is connected to open cavity, be provided with drive block 48 in lower enclosed cavity, described drive block 48 is tightly connected with needle assembly 46.Described needle assembly 46 is valve body 416 upper ends sealings, and is provided with the 2nd O shape circle 47 between needle assembly 46, drive block 48, valve body 416 threes.Described spring assembly comprises spring base 43, spring 4 and spring housing 15, and an end of described spring 4 is arranged on spring base 43, and the other end is arranged on spring housing 15, the lower end linking springs cover 15 of drive link 414.Described adjusting part comprises adjustment seat 2 and is arranged on adjusting rod 17 on adjustment seat 2, the bottom of described adjusting rod 17 linking springs seats 43, and adjustment seat 2 is threaded in valve body 416 bottoms, and bonnet 418 is threaded in the bottom of adjustment seat 2.Be provided with an O shape circle 1 between described adjusting rod 17 and adjustment seat 2.The upper end of described adjusting rod 17 is conical, and the bottom of spring base 43 is provided with the conical socket that matches with taper shape.Save temperature-sensing pipe, do not carried out filling of air tank head; Valve port and needle assembly 46 are arranged between inlet tube (forward) and air tank head; Adopt seal that both are isolated between the driver blade of diaphragm 411 bottoms and needle assembly 46, make the inlet pressure P0 of evaporimeter can not import to diaphragm 411 cavity of resorptions; During design, the effective area of the effective area of diaphragm 411 and needle assembly 46 is had has certain ratio poor.
Patent of the present invention has changed the operation principle of conventional heat pump type heating power expansion valve, cancelled temperature-sensing pipe, directly receive on the muffler of compressor with transmitting capillary 410, the back pressure P1 that directly gathers compressor drives the switching of heat pump type expansion valve, and the internal structure of heat pump type expansion valve is made appropriate change, can positive and negative two-way normal operation to guarantee expansion valve.The noninductive thermometer bulb of this scheme, without the filling of working medium, namely without temperature-sensitive mechanism, directly access compressor return air pipe with capillary and control expansion valve work, be exactly to control with pressure to replace traditional temperature control on principle, and improve to some extent on valve body structure.
As can be seen from Figure 4, the diaphragm 411 of air tank head of the present invention is stressed to change with area, force analysis such as Fig. 5-1,5-2.
Its three active forces:
P1-diaphragm 411 top active forces, be directly quote evaporimeter through crushing and overheated after compressor return air pressure, be called the valve power of closing.
P0-needle sub-assembly lower reaction power is evaporator pressure, without crushing, claims valve opening force.
P bullet-regulating spring active force claims valve opening force.
The effective area of F membrane-membrane sheet 411.
The effective area of F pin-needle sub-assembly.
In the course of the work, when valve was in balance, three active forces were following equation:
P0 * F pin+P bullet=P1 * F film
From above-mentioned equation as can be known, the spring force of having set up is constant, and it can make valve opening; Condensing pressure Pk becomes evaporating pressure P0 after this throttling, the pressure of this moment is the evaporator end pressure, and the area that it acts on the needle sub-assembly is the F pin, and needle is upwardly opened, therefore be called valve opening force.Produce certain crushing after cold-producing medium is flowed through evaporimeter, reach to the certain overheated caused pressure differential deltap P of compressor return air generation, Δ P=P0-P1.From then in figure as can be known, quote on the diaphragm 411 that P1 acts on air tank head, the area F film of diaphragm 411 with valve closing, is called the power of closing greater than the F pin.And diaphragm 411 bottoms of air tank head and valve body 416 use O type circle isolation, make evaporating pressure only act on the needle sub-assembly, can not act on diaphragm 411 bottoms, F film＞F pin, during with the extremely certain balance of valve closing, reduce gradually because temperature reduces the P1 value, the power that acts on the F film also reduces thereupon, make valve automatically be opened into again a new equalization point, its real work equation is:
P0 * F pin+P bullet 〉=P1 * F film
P0-evaporator pressure
P1-compressor return air pressure
The effective active area of F pin-needle assembly 46
The effective active area of F membrane-membrane sheet 411 work
Total power that P bullet-regulating spring produces
This shows, the unlatching size of valve, P0 value, P1 value in its work equation are constant, and valve opening is also with constant.Otherwise P0 value, P1 value become large or diminish, and all directly cause valve to become and diminish greatly, and during work, regulating spring power is constant, because refrigerant temperature descends, the P0 value is diminished, and valve opening force reduces, and valve is turned down.When reaching chilling temperature decline, the purpose that flow reduces thereupon automatically.Otherwise temperature rises, and the P0 value is increased, and valve opening force increases, and valve flow increases.
As we know from the figure, making valve change maximum is diaphragm 411 areas of evaporator outlet pressure P 1 and work area maximum.Because diaphragm 411 areas are large, the power that acts on top causes valve to change once changing.When room temperature descended, the compression rotating speed of convertible frequency air-conditioner was slack-off, and the compressor air suction ability descends, and this moment, the P1 value rose, and the power that acts on diaphragm 411 areas increases, and valve is turned down.The cryogen of flowing through satisfies the compressor air suction needs by new balance.Otherwise temperature rises, the frequency-changeable compressor faster rotational speed, and inspiratory force improves, and namely the P1 value reduces, and the power that acts on diaphragm 411 areas reduces, and valve is opened greatly, reaches voluntarily a new equalization point.
From the foregoing, the size of the flow of valve opening, as long as the size by the compressor back pressure decides, namely back pressure P1 value is large, and valve flow diminishes, the P1 value is little, it is large that valve flow becomes, and determine that P1 value size leans on the size of compressor inspiratory force, the inspiratory force of compressor hour, the P1 value increases, and valve flow is reduced.Otherwise, when the P1 value reduces, valve flow is increased.So this throttle is to do automatic adjusting according to compressor suction size, satisfies the compressor air suction requirement.When compressor shutdown, the P1 value increases, and when P1 * F film＞P0 * F pin+P bullet, valve closing is in case the liquid hit phenomenon of compressor start.In compressor when start,, the P1 value is during to certain value, and valve is just slowly opened again.
When air-conditioning heating, flow on the contrary, valve opening force P bullet is constant, and the P0 value of the former F of acting on pin becomes the condensing pressure Pk of high pressure, and simultaneously, after the valve opening force increase, the P1 value also increases, and new equalization point work equation is:
Pk * F pin+P bullet 〉=P1 * F film
Because of Pk * F pin+P bullet＞P0 * F pin+P bullet 〉=P1 * F film, make the reverse flow of valve greater than the forward flow, due to when design, F film and F pin are proportional, and its reverse flow increase is just in time flow required when heating.
This heat pump type expansion valve of directly automatically regulating by suction pressure of compressor mainly contains following characteristics:
1. be not with temperature-sensing pipe, remove filled working medium from, with the muffler of the direct connecting system of capillary, applicable to any working medium refrigerated air-conditioning system; And expansion valve itself has saved the filled technology of the air tank head that is difficult to grasp, and has also greatly reduced description; Simultaneously, nothing fills working medium in air tank head because not needing, and can realize environmental protection production.
2. directly the back pressure of cited system is controlled, be active in one's movements,, can not cause therefore and the fluctuation of the refrigerating capacity that produces because produce the action phenomenon that lags by " back pressure → suction temperature → temperature-sensing pipe temperature → temperature-sensing pipe pressure → air tank head pressure " a series of transmission without the conventional expanded valve.
3. fill working medium without nothing in temperature-sensing pipe, air tank head, therefore the impact that is not subjected to environment temperature is installed.
4. saved outer balance pipe and temperature-sensing pipe, easy for installation.
5. be specially adapted to back pressure and change refrigerated air-conditioning system frequently, as automotive air-conditioning system, the convertible frequency air-conditioner decorum etc.
Above-described embodiment is to explanation of the present invention, is not limitation of the invention, any scheme after simple transformation of the present invention is all belonged to protection scope of the present invention.
Claims (6)
1. the heat pump type expansion valve of noninductive thermometer bulb, is characterized in that: by the air tank head assembly, valve body, the needle assembly, drive link, spring assembly, adjusting part, bonnet, entrance sleeve and discharge connection form, the upper end of described valve body is provided with the air tank head assembly, the bottom of valve body is provided with bonnet, be provided with adjusting part between bonnet and valve body, adjusting part top is connected to the bottom of spring assembly, and the top of spring assembly is connected to the lower end of drive link, and the upper end of drive link is connected to the needle assembly, entrance sleeve and discharge connection are arranged on valve body and are positioned at the below of needle assembly, and described air tank head assembly is by capillary, the gas tank lid, diaphragm, gas tank seat and drive block form, but there is no temperature-sensing pipe, the gentle block of gas tank lid coordinates the formation cavity, diaphragm is separated into upper open cavity and lower enclosed cavity with cavity, an end capillaceous directly accesses the muffler of air-conditioning system, the other end is connected to open cavity, is provided with drive block in lower enclosed cavity, and described drive block is connected with the needle component sealing.
2. the heat pump type expansion valve of noninductive thermometer bulb as claimed in claim 1 is characterized in that: described needle assembly is valve body upper end sealing, and is provided with the 2nd O shape circle between needle assembly, drive block, valve body three.
3. the heat pump type expansion valve of noninductive thermometer bulb as claimed in claim 1, it is characterized in that: described spring assembly comprises spring base, spring and spring housing, one end of described spring mounts elastically, and the other end is arranged on spring housing, the lower end linking springs cover of drive link.
4. the heat pump type expansion valve of noninductive thermometer bulb as claimed in claim 3, it is characterized in that: described adjusting part comprises adjustment seat and the adjusting rod that is arranged on adjustment seat, the bottom of described adjusting rod linking springs seat, adjustment seat is threaded in valve body lower end section, and bonnet is threaded in the bottom of adjustment seat.
5. the heat pump type expansion valve of noninductive thermometer bulb as claimed in claim 4, is characterized in that: be provided with an O shape circle between described adjusting rod and adjustment seat.
6. as the heat pump type expansion valve of claim 4 or 5 described noninductive thermometer bulbs, it is characterized in that: the upper end of described adjusting rod is for conical, and the bottom of spring base is provided with the conical socket that matches with taper shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110303354XA CN102410678B (en) | 2011-09-30 | 2011-09-30 | Heat pump type expansion valve without temperature-sensing bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110303354XA CN102410678B (en) | 2011-09-30 | 2011-09-30 | Heat pump type expansion valve without temperature-sensing bag |
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| CN102410678A CN102410678A (en) | 2012-04-11 |
| CN102410678B true CN102410678B (en) | 2013-06-05 |
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| CN201110303354XA Expired - Fee Related CN102410678B (en) | 2011-09-30 | 2011-09-30 | Heat pump type expansion valve without temperature-sensing bag |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105823276B (en) * | 2015-01-09 | 2021-07-30 | 艾默生环境优化技术(苏州)有限公司 | Two-way thermal expansion valve |
| US11326816B2 (en) | 2017-04-13 | 2022-05-10 | Zhejiang Sanhua Automotive Components Co., Ltd. | Thermal expansion valve |
| CN106954376A (en) * | 2017-05-03 | 2017-07-14 | 南京航空航天大学 | The passive temperature difference starts formula spray cooler and method |
| CN108181228B (en) * | 2017-12-14 | 2021-04-27 | 北京金风科创风电设备有限公司 | Equivalent temperature cycle test system and method, and computer storage medium |
| JP7045345B2 (en) * | 2019-04-25 | 2022-03-31 | 株式会社鷺宮製作所 | Expansion valve and refrigeration cycle system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2402983Y (en) * | 1999-12-30 | 2000-10-25 | 上海交通大学 | Thermal expansion valve for automotive air conditioner |
| JP3525112B2 (en) * | 2000-11-21 | 2004-05-10 | 株式会社テージーケー | Expansion valve |
| JP2005164208A (en) * | 2003-12-05 | 2005-06-23 | Fuji Koki Corp | Expansion valve |
| JP5292540B2 (en) * | 2008-08-22 | 2013-09-18 | 株式会社テージーケー | Expansion device |
| CN101852307B (en) * | 2009-03-30 | 2011-09-28 | 浙江春晖智能控制股份有限公司 | Thermostatic expansion valve |
| CN201387188Y (en) * | 2009-05-25 | 2010-01-20 | 嵊州盈嘉机械有限公司 | Two-way circulation heating power expansion valve |
| CN101988585B (en) * | 2009-07-31 | 2013-03-06 | 浙江三花股份有限公司 | Thermal expansion valve |
| CN201666700U (en) * | 2010-02-09 | 2010-12-08 | 上海奉申制冷控制器有限公司 | Bidirectional heating power expansion valve |
| CN102022564A (en) * | 2010-12-08 | 2011-04-20 | 浙江鸿森机械有限公司 | Thermostatic expansion valve |
| CN202267277U (en) * | 2011-09-30 | 2012-06-06 | 浙江鸿森机械有限公司 | Heat pump type expansion valve without thermal bulbs |
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2011
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