CN212253247U

CN212253247U - Air conditioner and throttle valve thereof

Info

Publication number: CN212253247U
Application number: CN202020301089.6U
Authority: CN
Inventors: 甘威; 杨海建; 杨守武; 黎长源; 姚晶晶; 王妍丽; 王振铎; 熊克勇; 宣圣贵; 曾启明
Original assignee: Gree Electric Appliances Inc of Zhuhai; Gree Hefei Electric Appliances Co Ltd
Current assignee: Gree Electric Appliances Inc of Zhuhai; Gree Hefei Electric Appliances Co Ltd
Priority date: 2020-03-11
Filing date: 2020-03-11
Publication date: 2020-12-29
Anticipated expiration: 2030-03-11

Abstract

The utility model discloses an air conditioner and choke valve thereof, wherein, the choke valve includes the body, this internal disk seat and case of setting, the disk seat middle part sets up the inner chamber that holds the case, disk seat one end fixed head, the disk seat other end sets up first passageway, set up the second passageway on the head, first passageway and second passageway all communicate with the inner chamber, set up the refrigeration orifice and the heating orifice of intercommunication each other in the case respectively, the axial slip of inner chamber is followed to the case, when case and disk seat butt, the heating orifice and the first passageway intercommunication of case, when case and disk seat separation, the refrigeration orifice and the second passageway intercommunication of case. The throttle valve of the utility model adopts the integrated valve core processing, the two ends are respectively provided with the throttle holes with different drift diameters for refrigeration and heating, and the throttle valves respectively play the throttling role in correspondence during work and do not interfere with each other; the material is saved, the machining cost is saved, the operation is more reliable, the influence of the operation environment of the machine is avoided, and the throttling is reliable and stable.

Description

Air conditioner and throttle valve thereof

Technical Field

The utility model relates to a choke valve especially relates to an air conditioner and choke valve thereof.

Background

The throttling element is one of the indispensable devices in the air conditioning system, and the throttling element enables high-pressure liquid refrigerant to pass through a small section length, generates proper local resistance loss (or along-the-way loss), enables the pressure of the refrigerant to drop suddenly, enables the throttled liquid refrigerant to be vaporized and absorbs indoor or outdoor heat. For a constant-frequency refrigerating system, a capillary tube is generally used for throttling at the present stage, and in order to realize the switching between refrigeration and heating, a one-way valve part is required to be added to assist the throttling of the capillary tube, so that the cost in the aspects of materials, processing, welding and the like is higher.

The throttle valve used at present in the industry has an unstable structure, and the problems of frosting and noise often occur, mainly because the throttle control is unreliable. The throttle valve used at present is of a two-core structure, refrigeration and heating are respectively throttled by corresponding valve cores, and the copper valve core has certain gravity and falls down due to the fact that the throttle valve is in a vertical installation state. When the refrigerant flows upwards, the inflow sectional area of the bypass hole and the throttling hole of the valve core is smaller than the outflow sectional area of the valve core, so the refrigerant can not reliably support the valve core upwards to realize the throttling function. And burrs are easily remained after the bypass hole is processed, the valve core is blocked and then prevented from floating, and throttling is failed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an air conditioner and choke valve thereof to solve the technical problem who mentions in the background art.

In order to achieve the above object, the present invention provides an air conditioner and a throttle valve thereof, which comprises the following specific technical schemes:

the utility model provides a throttling valve, which comprises a body, this internal disk seat and the case of setting, the disk seat middle part sets up the inner chamber that holds the case, disk seat one end fixed head, the disk seat other end sets up first passageway, set up the second passageway on the head, first passageway and second passageway all communicate with the inner chamber, set up the refrigeration orifice and the heating orifice that communicate each other in the case respectively, the axial slip of inner chamber is followed to the case, when case and disk seat butt, the heating orifice and the first passageway intercommunication of case, when case and disk seat separation, the refrigeration orifice and the second passageway intercommunication of case.

Furthermore, the valve core is divided into an upper section and a lower section, the outer diameter of the upper section of the valve core is larger than that of the lower section of the valve core, the lower section of the valve core and the upper section of the valve core form a step structure, and a gap for refrigerant circulation is formed between the lower section of the valve core and the inner wall of the valve seat.

Further, the diameter of the cooling orifice is larger than that of the heating orifice, and the sectional area of the first passage is larger than the sum of the sectional area of the heating orifice and the sectional area of the gap between the valve core and the inner wall of the inner cavity.

Furthermore, the bottom end of the refrigeration throttling hole extends into the top of the lower valve core and is communicated with the heating throttling hole, at least two auxiliary bypass holes are uniformly arranged at the top of the lower valve core along the radial direction, one end of each auxiliary bypass hole is communicated with the refrigeration throttling hole, and the other end of each auxiliary bypass hole extends outwards to be communicated with the inner cavity.

Furthermore, the number of the auxiliary bypass holes is 3-6, and all the auxiliary bypass holes are uniformly distributed on the same plane by taking the axial lead of the valve core as the center.

Further, the valve core and the valve seat are both made of brass.

Furthermore, the top of the valve seat is provided with a containing cavity communicated with the inner cavity, the end enclosure is fixed in the containing cavity, a fixing edge is arranged at an opening at the top of the containing cavity, and the fixing edge is bent towards the end enclosure through a riveting process so as to fix the end enclosure in the containing cavity.

Furthermore, the bottom end of the seal head is provided with an upper sealing surface which is a conical surface, the top end of the upper sealing surface is communicated with the bottom end of the second channel, the top end of the valve core is provided with a refrigeration throttling surface, and the refrigeration throttling surface is of a frustum structure matched with the upper sealing surface.

Furthermore, the bottom end of the valve core is provided with a heating throttling surface, the heating throttling surface is of a frustum structure, the end part of the inner cavity far away from the cavity direction is provided with a lower sealing surface, the lower sealing surface is also a conical surface, the lower sealing surface is matched with the heating throttling surface, and the bottom end of the lower sealing surface is communicated with the first channel.

An air conditioner comprises the throttle valve.

The utility model discloses an air conditioner and choke valve thereof has following advantage:

the throttle valve of the utility model adopts the integrated valve core processing, the two ends are respectively provided with the throttle holes with different drift diameters for refrigeration and heating, and the throttle valves respectively play the throttling role in correspondence during work and do not interfere with each other; the material and the machining cost are saved, the operation is more reliable, the influence of the operation environment of the machine is avoided, and the throttling is reliable and stable; the inner cavity of the throttle valve with the valve core moving up and down is processed by one-step drilling, the hidden danger of valve core blocking caused by burrs, burrs and the like caused by other procedures is avoided, and the valve core and the valve seat have simple structures and are convenient to directly process and form; the valve core action is completely provided with power transmission by system pressure, and the conical surfaces at two ends are designed to greatly improve the positioning, guiding and sealing effects, so that the influence of internal leakage on throttling parameters is prevented.

Drawings

FIG. 1 is a cross-sectional view of the throttle valve of the present invention;

FIG. 2 is a cross-sectional view of the throttle valve of the present invention in a cooling state of the air conditioner;

fig. 3 is a cross-sectional view of the throttle valve of the present invention applied to the heating state of the air conditioner.

The reference numbers in the figures illustrate: 1. a valve seat; 11. an inner cavity; 12. a lower sealing surface; 13. a first channel; 14. a cavity; 15. fixing the edge; 2. sealing the end; 21. an upper sealing surface; 22. a second channel; 3. a valve core; 31. a heating orifice; 311. a heating throttle surface; 32. an auxiliary bypass hole; 33. a cooling orifice; 331. refrigerating the throttling surface; 4. a body.

Detailed Description

In order to better understand the purpose, structure and function of the present invention, the air conditioner and the throttle valve thereof of the present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, the utility model discloses a throttle valve, including a pipy body 4, set up disk seat 1 and case 3 in the body 4, disk seat 1 middle part sets up the inner chamber 11 that holds case 3, disk seat 1 end fixing head 2, the first passageway 13 of disk seat 1 other end setting and inner chamber 11 intercommunication, set up on the head 2 and communicate second passageway 22 with inner chamber 11, case 3 sets gradually the refrigeration orifice 33 and the heating orifice 31 of intercommunication each other from the top down along the axial lead direction, the axial slip of inner chamber 11 can be followed to case 3, when realizing when case 3 and disk seat 1 butt, the heating orifice 31 and the first passageway 13 intercommunication of case 3, when case 3 and disk seat 1 separate, the refrigeration orifice 33 and the second passageway 22 intercommunication of case 3. Through being the integral structure with the choke valve design, improve the reliability of choke valve by a wide margin, reduce cost input such as material use, machining, can extensively promote to using in the air conditioner, the range of application is wide to, the inner chamber 11 of the case 3 up-and-down motion of this choke valve is drilling processing, does not have burr, burr that other processes caused etc. to cause the dead hidden danger of case 3 card, and the simple structure of case 3 and disk seat 1 is convenient for direct machine-shaping.

The top of the valve seat 1 is provided with a containing cavity 14 communicated with the inner cavity 11, the end enclosure 2 is fixed in the containing cavity 14, an opening at the top of the containing cavity 14 is provided with a fixing edge 15, and the fixing edge 15 is bent towards the end enclosure 2 through a riveting process so as to fix the end enclosure 2 in the containing cavity 14.

The bottom end of the end socket 2 is provided with an upper sealing surface 21, the upper sealing surface 21 is a conical surface, the top end of the upper sealing surface 21 is communicated with the bottom end of the second channel 22, the top end of the valve core 3 is provided with a refrigeration throttling surface 331, and the refrigeration throttling surface 331 is of a frustum structure matched with the upper sealing surface 21.

The bottom end of the valve core 3 is provided with a heating throttling surface 311, the heating throttling surface 311 is of a frustum structure, the end part of the inner cavity 11 far away from the cavity 14 is provided with a lower sealing surface 12, the lower sealing surface 12 is also a conical surface, the lower sealing surface 12 is matched with the heating throttling surface 311, and the bottom end of the lower sealing surface 12 is communicated with the first channel 13.

The valve core 3 is divided into an upper section and a lower section, the outer diameter of the upper section valve core 3 is larger than that of the lower section valve core 3, the lower section valve core 3 and the upper section valve core 3 form a step structure, and a gap for refrigerant circulation is formed between the lower section valve core 3 and the inner wall of the valve seat 1.

The diameter of the cooling orifice 33 is larger than the diameter of the heating orifice 31, and the sectional area of the first passage 13 is larger than the sum of the sectional area of the heating orifice 31 and the sectional area of the gap between the valve body 3 and the inner wall of the chamber 11. As shown in fig. 3, when the vehicle operates in a heating state, the upper end of the refrigerant throttle valve flows into the inner cavity 11 towards the lower end, the valve core 3 moves downwards under the action of pressure of the valve core 3, the heating throttle surface 311 is sealed with the lower sealing surface 12, and the refrigerant can only flow through the heating throttle hole 31; as shown in fig. 2, when the heating mode is operated, the refrigerant enters the inner chamber 11 from the lower end, and since the sectional area of the first passage 13 is larger than the sum of the sectional area of the heating orifice 31 and the sectional area of the gap between the valve element 3 and the inner wall of the inner chamber 11, the valve element 3 is rapidly floated upward by the high pressure of the throttle valve, the upper sealing surface 21 abuts against the cooling throttle surface 331 to achieve sealing, and the refrigerant flows out of the cooling orifice 33.

In order to make the cooling orifice 33 play a practical role, the bottom end of the cooling orifice 33 extends into the top of the lower valve core 3 and is communicated with the heating orifice 31, at least two auxiliary bypass holes 32 are uniformly arranged at the top of the lower valve core 3 along the radial direction, one end of each auxiliary bypass hole 32 is communicated with the cooling orifice 33, the other end of each auxiliary bypass hole 32 extends outwards to be communicated with the inner cavity 11, and the sectional area of each auxiliary bypass hole 32 plus the sectional area of the heating orifice 31 is larger than that of the cooling orifice 33, so that the cooling throttling effect is satisfied.

Preferably, the number of the auxiliary bypass holes 32 is 3-6, and the auxiliary bypass holes 32 are uniformly distributed on the same plane with the axial line of the valve core 3 as the center, so that the inflow of the refrigerant is more smooth in the heating mode.

Meanwhile, the auxiliary bypass holes 32 can be provided with multiple layers from top to bottom, so that the refrigeration throttling effect is further improved.

Case 3 is in upper and lower motion process, and the cooperation through case 3's outer wall and inner chamber 11 realizes the direction, leads to inside refrigerant to appear revealing the condition in order to prevent that 3 slopes of case, and case 3 and disk seat 1 are made by brass, and the brass can be ensured to have good self-lubricating effect between case 3 and the 1 body 4 of disk seat, and then improves the life of choke valve.

The body 4 is a copper tube.

The utility model also provides an air conditioner, including foretell choke valve.

The throttle valve is processed by adopting an integrated valve core 3, the two ends of the throttle valve are respectively provided with throttle holes with different drift diameters for refrigeration and heating, and the throttle valves respectively play a throttling role in correspondence during working and do not interfere with each other; the material and the machining cost are saved, the operation is more reliable, the influence of the operation environment of the machine is avoided, and the throttling is reliable and stable; the inner cavity 11 of the throttle valve, in which the valve core 3 moves up and down, is processed by drilling once, so that the hidden danger that the valve core 3 is blocked due to burrs, burrs and the like caused by other procedures is avoided, and the valve core 3 and the valve seat 1 have simple structures and are convenient to directly process and mold; the valve core 3 acts completely by the power transmission provided by the system pressure, and the conical surfaces at the two ends are designed to greatly improve the positioning, guiding and sealing effects, so that the influence of internal leakage on the throttling parameters is prevented.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims

1. A throttle valve is characterized by comprising a body (4), a valve seat (1) and a valve core (3) are arranged in the body (4), an inner cavity (11) for accommodating the valve core (3) is formed in the middle of the valve seat (1), a seal head (2) is fixed at one end of the valve seat (1), a first channel (13) is formed in the other end of the valve seat (1), a second channel (22) is formed in the seal head (2), the first channel (13) and the second channel (22) are communicated with the inner cavity (11), a refrigeration orifice (33) and a heating orifice (31) which are communicated with each other are respectively arranged in the valve core (3), and the valve core (3) slides along the axial direction of the inner cavity (11), when the valve core (3) is abutted with the valve seat (1), the heating throttle hole (31) of the valve core (3) is communicated with the first channel (13), when the valve element (3) is separated from the valve seat (1), the cooling orifice (33) of the valve element (3) communicates with the second passage (22).

2. The throttling valve according to claim 1, characterized in that the valve core (3) is divided into an upper section and a lower section, the outer diameter of the upper section valve core (3) is larger than that of the lower section valve core (3), the lower section valve core (3) and the upper section valve core (3) form a step structure, and a gap for refrigerant circulation is formed between the lower section valve core (3) and the inner wall of the valve seat (1).

3. The throttle valve according to claim 2, characterized in that the diameter of the cooling orifice (33) is larger than the diameter of the heating orifice (31), and the cross-sectional area of the first passage (13) is larger than the sum of the cross-sectional area of the heating orifice (31) and the cross-sectional area of the gap between the spool (3) and the inner wall of the chamber (11).

4. The throttling valve according to claim 3, characterized in that the bottom end of the cooling orifice (33) extends into the top of the lower valve core (3) and is communicated with the heating orifice (31), at least two auxiliary bypass holes (32) are uniformly arranged at the top of the lower valve core (3) along the radial direction, one end of each auxiliary bypass hole (32) is communicated with the cooling orifice (33), and the other end of each auxiliary bypass hole (32) extends outwards and is communicated with the inner cavity (11).

5. The throttle valve according to claim 4, characterized in that the number of the auxiliary bypass holes (32) is 3-6, and each auxiliary bypass hole (32) is uniformly distributed on the same plane by taking the axial lead of the valve core (3) as the center.

6. Throttle valve according to claim 1, characterized in that the spool (3) and the valve seat (1) are both made of brass.

7. The throttling valve according to claim 1, characterized in that a cavity (14) communicated with the inner cavity (11) is arranged at the top of the valve seat (1), the sealing head (2) is fixed in the cavity (14), a fixing edge (15) is arranged at an opening at the top of the cavity (14), and the fixing edge (15) is bent towards the sealing head (2) by riveting process to fix the sealing head (2) in the cavity (14).

8. The throttling valve according to claim 1, characterized in that the bottom end of the seal head (2) is provided with an upper sealing surface (21), the upper sealing surface (21) is a conical surface, the top end of the upper sealing surface (21) is communicated with the bottom end of the second channel (22), the top end of the valve core (3) is provided with a refrigerating throttling surface (331), and the refrigerating throttling surface (331) is of a frustum structure matched with the upper sealing surface (21).

9. The throttling valve according to claim 1, characterized in that a heating throttling surface (311) is arranged at the bottom end of the valve core (3), the heating throttling surface (311) is of a frustum structure, a lower sealing surface (12) is arranged at the end part of the inner cavity (11) far away from the cavity (14), the lower sealing surface (12) is also a conical surface, the lower sealing surface (12) is matched with the heating throttling surface (311), and the bottom end of the lower sealing surface (12) is communicated with the first channel (13).

10. An air conditioner characterized by comprising the throttle valve according to any one of claims 1 to 9.