CN205718104U - Heating power expansion valve and there is the refrigeration system of this heating power expansion valve - Google Patents

Heating power expansion valve and there is the refrigeration system of this heating power expansion valve Download PDF

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Publication number
CN205718104U
CN205718104U CN201620299298.5U CN201620299298U CN205718104U CN 205718104 U CN205718104 U CN 205718104U CN 201620299298 U CN201620299298 U CN 201620299298U CN 205718104 U CN205718104 U CN 205718104U
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China
Prior art keywords
expansion valve
heating power
power expansion
groove
spool
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CN201620299298.5U
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Chinese (zh)
Inventor
郑正松
陈述
陈振文
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Zhejiang Sanhua Automotive Components Co Ltd
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Zhejiang Sanhua Automotive Components Co Ltd
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Abstract

nullThis utility model relates to a kind of heating power expansion valve and has the refrigeration system of this heating power expansion valve,Including valve body (100) and spool (102),Described valve body includes first interface (103)、Second interface (104)、The valve chamber (107) connected with described first interface (103)、It is positioned at the throttle orifice between described valve chamber (107) and described second interface (104),It is characterized in that,Described throttle orifice includes cylindrical hole (108)、Conical bore (109) and groove (110),The maximum inner diameter of described conical bore (109) is more than the internal diameter of described cylindrical hole (108),A part for described groove (110) is depressed in the inwall of described cylindrical hole (108),Another part of described groove (110) is depressed in the inwall of conical bore (109),When described spool (102) abuts against with described throttle orifice relative to the heating power expansion valve of prior art,Heating power expansion valve of the present utility model solves under underrun operating mode,Expansion valve job insecurity and the problem of noise,This utility model additionally provides a kind of refrigeration system applying above-mentioned heating power expansion valve simultaneously.

Description

Heating power expansion valve and there is the refrigeration system of this heating power expansion valve
[technical field]
This utility model relates to technical field of air conditioner refrigeration, particularly relates to a kind of heating power expansion valve and applies the refrigeration system of this heating power expansion valve.
[background technology]
In technical field of air conditioner refrigeration, general air-conditioning includes compressor, condenser, vaporizer and restricting element.Vaporizer low-temperature low-pressure refrigerant out is inhaled in compressor, it is compressed into the vaporized refrigerant of High Temperature High Pressure, the liquid refrigerant of high normal pressure and temperature it is condensed into then into condenser, when the liquid refrigerant of high normal pressure and temperature is by restricting element, because of reducing pressure by regulating flow, while pressure reduces, liquid refrigerant makes the temperature of itself decline the most accordingly because of evaporation endothermic, thus become the two phase refrigerant of low-pressure low-temperature, the cold-producing medium of this low-temp low-pressure is introduced vaporizer heat absorption evaporation, the temperature of air conditioner surroundings can be made to decline and reach the purpose of refrigeration.Reenter compressor from vaporizer low-temp low-pressure gaseous refrigerant out, thus complete a kind of refrigeration cycle, then repeat said process.
Heating power expansion valve is the throttle part that air conditioning for automobiles is commonly used, the degree of superheat according to evaporator outlet regulates the flow of the cold-producing medium sending into vaporizer from condenser, the critical piece of adjusting refrigerant flow rate is spool and throttle orifice, spool moving up and down in throttle orifice regulates the circulation area of heating power expansion valve.Existing heating power expansion valve, when spool moves up to close port, on the one hand excessive due to cold-producing medium inlet outlet pressure differential, cold-producing medium easily gasifies, and causes valve rod easily to rock;On the other hand stagnate due to the kind of refrigeration cycle between compressor and air-conditioner, therefore the lubricating oil contained in cold-producing medium can not be fed on compressor, along with the prolongation of compressor operating time, compressor owing to lacking lubricating oil and viscous, thus can cause system pressure fluctuation and noise etc..
Therefore, it is necessary to improve for existing technology, to solve above technical problem.
[summary of the invention]
One of the purpose of this utility model is to provide a kind of heating power expansion valve, can still have a small amount of cold-producing medium to flow out when system underrun spool abuts throttle orifice, it is to avoid the excessive cold-producing medium of pressure reduction easily gasifies and causes valve rod to rock;Additionally by this expansion valve it can be avoided that kind of refrigeration cycle between air-conditioning and compressor is stagnated, the lubricating oil contained in cold-producing medium can not be fed on compressor, and compressor owing to lacking lubricating oil and viscous, thus can cause system pressure fluctuation and noise etc..
nullThe present invention solves the defect of above-mentioned prior art,A kind of heating power expansion valve,Including valve body (100) and spool (102),Described valve body includes first interface (103)、Second interface (104)、The valve chamber (107) connected with described first interface (103)、It is positioned at the throttle orifice between described valve chamber (107) and described second interface (104),It is characterized in that,Described throttle orifice includes cylindrical hole (108)、Conical bore (109) and groove (110),The maximum inner diameter of described conical bore (109) is more than the internal diameter of described cylindrical hole (108),A part for described groove (110) is depressed in the inwall of described cylindrical hole (108),Another part of described groove (110) is depressed in the inwall of conical bore (109),When described spool (102) abuts with described throttle orifice,It is formed with bypass passageways between described groove (110) and spool (102),Described valve chamber (107) is circulated with described second interface by described bypass passageways.
Described groove (110) includes the first end (1101) being depressed in described cylindrical hole (108) inwall and the second end (1102) being depressed on described conical bore (109) inwall, described conical bore (109) is R2 with the maximum inner diameter of the corresponding internal partial wall of described second end (1102), the internal diameter of described cylindrical hole (108) is R1, it is R that described spool (102) and described throttle orifice abut against the cross-sectional area radius at position, meets R1≤R R2.
When described spool (102) abuts with described throttle orifice, described spool (102) abuts against with the junction of described cylindrical hole (108) and described conical bore (109), and R1=R R2.
When described spool (102) abuts with described throttle orifice, described spool (102) abuts against with the inwall of described conical bore (109), and R1 R R2.
The cross section of described groove (110) is arc, half elliptic or square, and the maximum cross-section area of described groove is 4.5mm2
Described groove (110) is uniformly distributed in a circumferential direction, and quantity is 3.
The cross-sectional area of described groove (110) is 3~6mm2
Use this structure, when spool move upward under valve rod induced effect abut with throttle orifice time, the bypass flow channel that first interface port still has a small amount of cold-producing medium to be formed between groove and spool flows to the second interface, poor to reduce first interface and the second interface pressure, it is to avoid valve rod rocks;It is simultaneously also beneficial to the backflow of compressor lubricant oil, can make the lubricating oil comprised in cold-producing medium that compressor is lubricated, to produce the bad phenomenon such as noise owing to lacking lubricating oil after avoiding compressor longtime running.
This utility model further relates to a kind of refrigeration system, including compressor, condenser, heating power expansion valve and vaporizer, described heating power expansion valve is above-mentioned heating power expansion valve, and when described spool abuts against with described throttle orifice, described condenser is connected with described vaporizer by described bypass passageways.
[accompanying drawing explanation]
Fig. 1 is the heating power expansion valve internal structure cross-sectional schematic of the present invention.
Fig. 2 is the partial enlarged drawing of throttle orifice in Fig. 1.
Fig. 3 is the top view of throttle orifice in Fig. 2.
Fig. 4 is the position structural representation when spool abuts with throttle orifice shown in Fig. 3.
[detailed description of the invention]
The heating power expansion valve that this utility model provides, the cylindrical hole at the throttle orifice of this expansion valve is provided with groove with conical bore junction.When spool abuts with throttle orifice under valve rod induced effect, the groove at spool and junction forms bypass passageways, and cold-producing medium remains to flow to the second interface from the bypass passageways that first interface is formed between groove and spool.Being possible to prevent to occur cold-producing medium first interface and the excessive situation of the second interface pressure difference, when the most also ensureing underrun, needed for refrigerant flow and vaporizer, cold-producing medium matches.Another core of the present utility model is to provide a kind of refrigeration system applying above-mentioned heating power expansion valve.
In order to make those skilled in the art be better understood from the technical solution of the utility model, below in conjunction with the accompanying drawings this utility model specific embodiment is described in further detail.
Refer to Fig. 1 to Fig. 3, Fig. 1 is the structural representation of a kind of detailed description of the invention of the provided heating power expansion valve of this utility model, Fig. 2 is the partial enlarged drawing of throttle orifice in Fig. 1, Fig. 3 is the top view at throttle orifice position in Fig. 1, and Fig. 4 is the position structural representation when spool abuts with throttle orifice shown in Fig. 3.
As depicted in figs. 1 and 2, this utility model provides a kind of heating power expansion valve, including valve body 100, valve body 100 includes valve chamber 107 that first interface 103 connects, throttle orifice, the second interface 104 and return flow line 105 between valve chamber 107 and the second interface 104 with first interface 103.In systems, first interface 103 is connected with the condenser of high-pressure side, and the second interface 104 is connected with the vaporizer of low-pressure end, and flow in return flow line 105 cold-producing medium returned to compressor through vaporizer.Heating power expansion valve passes return flow line and the valve rod 101 of throttle orifice in further including being slidably mounted on valve body, its one end is connected with spool 102, the other end is connected with gas phase head, valve rod 101 can be promoted by gas phase head make spool 102 away from or near throttle orifice, thus control the aperture of throttle orifice.
Throttle orifice includes the cylindrical hole 108 away from valve chamber 107 and the conical bore 109 near valve chamber 107, and the maximum inner diameter of conical bore 109 is more than the internal diameter of cylindrical hole 108.Cylindrical hole 108 is provided with at least one groove 110 with the junction 106 of conical bore 109, a part for groove 110 is depressed in the inwall of cylindrical hole 108, another part of groove 110 is depressed in the inwall of conical bore 109, and groove 110 can connect cylindrical hole 108 and conical bore 109.As shown in Figure 4, when spool moves up to abut throttle orifice, spool 102 abuts against with junction 106, owing to a part for groove 110 is depressed in the inwall of cylindrical hole 108, another part of groove 110 is depressed in the inwall of conical bore 109, being formed with bypass passageways between groove 110 and spool 102, bypass passageways can connect the second interface 104 and valve chamber 107.When the inwall of spool Yu throttle orifice abuts against, vaporizer can be flowed to via first interface 103, valve chamber 107, bypass flow channel, cylindrical hole 108 and the second interface from condenser part of refrigerant out.It is here noted that, spool 102 can also abut against with the inwall of conical bore 109, groove includes the first end 1101 being depressed in cylindrical hole 108 inwall and is depressed in the second end 1102 of conical bore 109 inwall, conical bore 109 is R2 with the maximum inner diameter of the second corresponding internal partial wall of end 1102, the internal diameter of cylindrical hole 108 or junction 106 is R1, it is R that spool 102 and throttle orifice abut against the cross-sectional area radius at position, and its size relationship is R1≤R R2.
Use the heating power expansion valve of this structure, cold-producing medium after compressor compresses enters valve chamber 107 through first interface 103, when spool 102 moves downward in the induced effect of valve rod 101, i.e. open valve port, cold-producing medium flows through conical bore 109 from first interface 103 and flows to the second interface 104 with groove 110 and cylindrical hole 108, then flows to vaporizer through the second interface 104.When spool 102 moves up to abut against with throttle orifice under the induced effect of valve rod 101, still a small amount of cold-producing medium is had to flow to the second interface 104 through bypass passageways, it is possible to prevent occur because first interface 103 is excessive with the second interface 104 pressure differential, cold-producing medium easily vaporizes, causing the problem that valve rod 101 easily rocks, therefore the stability of automotive air-conditioning system improves.Additionally being also possible to prevent, owing to the kind of refrigeration cycle between compressor and air-conditioner is stagnated, to cause the lubricating oil contained in cold-producing medium can not be fed on compressor, compressor owing to lacking lubricating oil and viscous, thus can cause the problems such as system pressure fluctuation and noise.
In the present embodiment, above-mentioned groove 110 is three, and groove 110 cross section is arc, and its maximum cross-section area is 4.5mm2.Groove 110 is arranged on the junction 106 of cylindrical hole 108 and conical bore 109, is shaped by extrusion process, is easily worked, it is possible to reduce the manufacturing cost of heating power expansion valve.Specifically offer groove 110 quantity and groove cross section amasss choosing of size, then determine according to the amount blood pressure lowering value of heating power expansion valve in the flow of the cold-producing medium of heating power expansion valve and system.
The shape of certain above-mentioned groove cross section can also be other shape, such as half elliptic or square etc., owing to above-mentioned groove is depressed in cylindrical hole and conical bore, the spool of this expansion valve inwall with junction 106 or conical bore 109 during reciprocating along with valve rod abuts against, cause abrasion thus without to this groove, substantially prolongs its service life.
This utility model also provides for a kind of refrigeration system, and including compressor, condenser, heating power expansion valve and vaporizer, this heating power expansion valve uses the structure in example performed as described above.When heating power expansion valve is closed, still some cold-producing medium can flow out heating power expansion valve by bypass passageways, can improve the stability of air conditioning system, be also beneficial to the backflow of compressor lubricant oil;The refrigeration system of the expansion valve that have employed said structure has stable and that noise is little effect.
Owing to above-mentioned heating power expansion valve has technique effect as above, therefore, the refrigeration system including this expansion valve also should have identical technique effect, does not repeats them here.
Above to a kind of expansion valve provided by the utility model and there is the refrigeration system of this expansion valve be described in detail.Principle of the present utility model and embodiment are set forth by specific case used herein, and the explanation of above example is only intended to help to understand method of the present utility model and core concept thereof.It should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention, it is also possible to the present invention is carried out some improvement and modification, these improve and modify in the protection domain also falling into the claims in the present invention.

Claims (8)

  1. null1. a heating power expansion valve,Including valve body (100) and spool (102),Described valve body includes first interface (103)、Second interface (104)、The valve chamber (107) connected with described first interface (103)、It is positioned at the throttle orifice between described valve chamber (107) and described second interface (104),It is characterized in that,Described throttle orifice includes cylindrical hole (108)、Conical bore (109) and groove (110),The maximum inner diameter of described conical bore (109) is more than the internal diameter of described cylindrical hole (108),A part for described groove (110) is depressed in the inwall of described cylindrical hole (108),Another part of described groove (110) is depressed in the inwall of conical bore (109),When described spool (102) abuts with described throttle orifice,It is formed with bypass passageways between described groove (110) and spool (102),Described valve chamber (107) is circulated with described second interface by described bypass passageways.
  2. Heating power expansion valve the most according to claim 1, it is characterized in that the first end (1101) that described groove (110) includes being depressed in described cylindrical hole (108) inwall and the second end (1102) being depressed on described conical bore (109) inwall, described conical bore (109) is R2 with the maximum inner diameter of the corresponding internal partial wall of described second end (1102), the internal diameter of described cylindrical hole (108) is R1, it is R that described spool (102) and described throttle orifice abut against the cross-sectional area radius at position, meets R1≤R R2.
  3. Heating power expansion valve the most according to claim 2, it is characterized in that, when described spool (102) abuts with described throttle orifice, described spool (102) abuts against with the junction of described cylindrical hole (108) and described conical bore (109), and R1=R R2.
  4. Heating power expansion valve the most according to claim 2, it is characterised in that when described spool (102) abuts with described throttle orifice, described spool (102) abuts against with the inwall of described conical bore (109), and R1 R R2.
  5. Heating power expansion valve the most according to claim 4, it is characterised in that the cross section of described groove (110) is arc, half elliptic or square, the maximum cross-section area of described groove is 4.5mm2
  6. Heating power expansion valve the most according to claim 5, it is characterised in that described groove (110) is uniformly distributed in a circumferential direction, quantity is 3.
  7. Heating power expansion valve the most according to claim 6, it is characterised in that the cross-sectional area of described groove (110) is 3~6mm2
  8. 8. a refrigeration system, including compressor, condenser, heating power expansion valve and vaporizer, it is characterized in that, described heating power expansion valve is the heating power expansion valve described in any one of claim 1-7, when described spool (102) abuts against with described throttle orifice, described condenser is connected with described vaporizer by described bypass passageways.
CN201620299298.5U 2016-04-11 2016-04-11 Heating power expansion valve and there is the refrigeration system of this heating power expansion valve Active CN205718104U (en)

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CN201620299298.5U CN205718104U (en) 2016-04-11 2016-04-11 Heating power expansion valve and there is the refrigeration system of this heating power expansion valve

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109781445A (en) * 2018-12-28 2019-05-21 大连理工大学 A kind of method of determining heating power expansion valve circulation area

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109781445A (en) * 2018-12-28 2019-05-21 大连理工大学 A kind of method of determining heating power expansion valve circulation area

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