Electronic expansion valve and refrigeration equipment

Abstract

According to the technical scheme, the electronic expansion valve comprises a valve shell and a connecting base, the connecting base is provided with a mounting hole penetrating in the axial direction of the connecting base, the connecting base comprises a first connecting section and a second connecting section, the first connecting section is used for being connected with a valve seat of the electronic expansion valve, and the second connecting section is connected with the first connecting section. A step face is formed on the peripheral wall of the second connecting section, one end of the valve shell is arranged on the step face, and the distance L from the step face to the first connecting section is larger than or equal to 3 mm. According to the electronic expansion valve, the distance L from the step face to the first connecting section is limited to be larger than or equal to 3 mm, when the valve shell and the step face are subjected to laser welding, welding ash / black can escape along the two sides of the valve shell and cannot be left on the end face of the first connecting section, and therefore the procedure of manually removing the welding ash / black is omitted, and the production efficiency of the electronic expansion valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid control components, in particular to an electronic expansion valve and a refrigeration device. Background Art

[0002] The electronic expansion valve includes a valve port, a valve needle, a connection seat, a screw rod, a nut assembly, a valve housing, a coil and other structures. At present, in order to control the overall height of the product and consider the cost, the height of the weld formed by the connection seat and the valve housing from the connection seat reference plane is ≤1mm, and the outer circle of the connection seat reference part is much larger than the outer circle of the valve housing. During laser welding, the weld is too close to the reference upper plane, resulting in welding ash / black on the reference upper plane of the connection seat, which needs to be manually removed after the process is completed. The process efficiency is low, the labor cost is high, and it is not conducive to automation. Utility Model Content

[0003] The main purpose of the utility model is to provide an electronic expansion valve, aiming to improve the production efficiency of the electronic expansion valve.

[0004] The technical solution of the utility model provides an electronic expansion valve, comprising:

[0005] Valve housing;

[0006] A connecting seat having a mounting hole extending axially therethrough, the connecting seat comprising a first connecting section and a second connecting section, the first connecting section being used to connect to the valve seat of the electronic expansion valve, the second connecting section being connected to the first connecting section, the outer peripheral wall of the second connecting section being formed with a step surface, one end of the valve housing being arranged on the step surface, the distance from the step surface to the first connecting section being L, L ≥ 3 mm.

[0007] In one embodiment, the electronic expansion valve also includes a nut assembly passed through the mounting hole, the nut assembly includes a nut body and a connecting plate connected to each other, the mounting hole includes a first hole segment and a second hole segment connected to the first hole segment, the nut body passes through the first hole segment from the second hole segment, the connecting plate is arranged in the second hole segment and connected to the inner wall surface of the second hole segment.

[0008] In one embodiment, the first hole segment and the second hole segment form a positioning surface, the connecting plate abuts the positioning surface, the outer peripheral edge of the connecting plate is bent away from the first hole segment to form a flange, and the flange is connected to the inner peripheral wall of the second hole segment.

[0009] In one embodiment, the flange is cylindrical.

[0010] In one embodiment, the length of the flange in the axial direction of the connecting seat is greater than the length of the second hole segment in the axial direction thereof.

[0011] In one embodiment, the flange is welded and / or interference fit with the second hole segment.

[0012] In one embodiment, the outer circumferential wall of the nut body is clearance-matched with the inner circumferential wall of the first hole segment.

[0013] In one embodiment, the inner circumferential wall of the first hole segment forms a first abutting surface facing the second hole segment, the outer circumferential wall of the nut body forms a second abutting surface facing away from the second hole segment, and the first abutting surface abuts against the second abutting surface.

[0014] In one embodiment, the nut body and the connecting plate are integrally formed.

[0015] In one embodiment, the valve housing is welded to the step surface.

[0016] The utility model also provides a refrigeration device, which comprises the aforementioned electronic expansion valve.

[0017] The technical solution of the utility model limits the distance L from the step surface to the first connecting section to be greater than or equal to 3 mm, so that the step surface is farther away from the end surface of the first connecting section, thereby increasing the weld formed by the step surface and the end surface of the first connecting section. When the valve housing and the step surface are laser welded, welding ash / black will run away along the two sides of the valve housing and will not remain on the end surface of the first connecting section, thereby reducing the process of manual removal of welding ash / black, improving the production efficiency of the electronic expansion valve, reducing labor costs, and improving the level of automation in the production of the electronic expansion valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the structure of an electronic expansion valve in one embodiment of the utility model;

[0020] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0021] Figure 3 for Figure 1 A schematic diagram of the structure of the middle connecting seat;

[0022] Figure 4 for Figure 1 A schematic diagram of the structure of the nut assembly;

[0023] Figure 5 for Figure 4 Schematic diagram of the structure of the connecting plate.

[0024] Description of Figure Numbers:

[0025] Label name Label name 10 Electronic expansion valve 310 First connecting section 100 Valve housing 320 Second connecting section 200 Valve Seat 321 Step surface 300 Connector 330 Mounting holes 400 Nut assembly 331 First hole section 410 Nut body 332 Second hole section 420 Connecting plate 333 Positioning surface 430 Flanging 334 First abutment surface 411 Second abutment surface

[0026] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0030] The electronic expansion valve 10 proposed in the utility model can be applied to an air-conditioning system, and the fluid medium flowing through the electronic expansion valve 10 is a refrigerant used for heat exchange in the air-conditioning system. At this time, the electronic expansion valve 10 is installed at the inlet of the evaporator of the air-conditioning system. The electronic expansion valve 10 serves as a dividing element between the high-pressure side and the low-pressure side of the air-conditioning system, and throttles and reduces the pressure of the high-pressure liquid refrigerant from the liquid storage dryer and other devices, thereby adjusting and controlling the dosage of the liquid refrigerant entering the evaporator, so that the dosage of the liquid refrigerant can meet the requirements of the external refrigeration load. Alternatively, the electronic expansion valve 10 is applied to other types of refrigeration equipment, and the fluid medium flowing through the electronic expansion valve 10 can also be other fluid media besides the refrigerant, as long as the electronic expansion valve 10 can achieve throttling and reducing the pressure of the fluid medium, and there is no specific restriction on this.

[0031] Please refer to Figures 1 to 3 The utility model proposes an electronic expansion valve 10, including a valve housing 100 and a connecting seat 300, the connecting seat 300 has a mounting hole 330 extending axially therethrough, the connecting seat 300 includes a first connecting section 310 and a second connecting section 320, the first connecting section 310 is used to connect the valve seat 200 of the electronic expansion valve 10, the second connecting section 320 is connected to the first connecting section 310, a step surface 321 is formed on the outer peripheral wall of the second connecting section 320, one end of the valve housing 100 is arranged on the step surface 321, the distance from the step surface 321 to the first connecting section 310 is L, L ≥ 3mm.

[0032] Specifically, the connection seat 300 includes a first connection section 310 and a second connection section 320, the second connection section 320 is connected to one end of the first connection section 310, the first connection section 310 is used to connect with the valve seat 200 of the electronic expansion valve 10, and the second connection section 320 is used to connect the valve housing 100. The outer peripheral wall of the second connection section 320 is formed with a step surface 321, and one end of the valve housing 100 is connected to the step surface 321 to ensure a tight connection between the valve housing 100 and the connection seat 300.

[0033] The valve housing 100 is generally cylindrical, and the valve housing 100 is covered at one end of the second connecting section 320 away from the first connecting section 310. The end of the valve housing 100 away from the second connecting section 320 has a closed end surface, and the end of the valve housing 100 close to the second connecting section 320 is connected to the mounting hole 330 of the connecting seat 300. The screw rod, rotor assembly, nut assembly 400 and other components of the electronic expansion valve 10 are at least partially accommodated in the valve housing 100. Among them, the nut assembly 400 is partially accommodated in the valve housing 100, and the other part is penetrated through the mounting hole 330 of the connecting seat 300.

[0034] The diameter of one end of the first connecting section 310 close to the second connecting section 320 is larger than the diameter of the second connecting section 320. When the valve housing 100 is laser welded with the step surface 321, the step surface 321 is too close to the end surface of the first connecting section 310. The weld formed by the step surface 321 and the end surface of the first connecting section 310 is too small, resulting in welding ash / black remaining on the end surface of the first connecting section 310. The welding ash / black needs to be manually removed after the welding process is completed, resulting in low process efficiency, high labor costs, and not conducive to automation.

[0035] The utility model limits the distance L from the step surface 321 to the first connecting section 310 to be greater than or equal to 3 mm, so that the step surface 321 is far away from the end surface of the first connecting section 310, thereby increasing the weld formed by the step surface 321 and the end surface of the first connecting section 310. When the valve housing 100 and the step surface 321 are laser welded, welding ash / black will run away along the two sides of the valve housing 100, and will not remain on the end surface of the first connecting section 310, thereby reducing the process of manually removing welding ash / black, improving the production efficiency of the electronic expansion valve 10, reducing labor costs, and improving the level of production automation of the electronic expansion valve 10.

[0036] In one embodiment, the electronic expansion valve 10 also includes a nut assembly 400 that is inserted into the mounting hole 330. The nut assembly 400 includes a nut body 410 and a connecting plate 420 that are connected to each other. The mounting hole 330 includes a first hole section 331 and a second hole section 332 that is connected to the first hole section 331. The nut body 410 is inserted into the first hole section 331 through the second hole section 332. The connecting plate 420 is disposed in the second hole section 332 and is connected to the inner wall surface of the second hole section 332.

[0037] Please refer to Figures 1 to 4 The electronic expansion valve 10 also includes a nut assembly 400 that is inserted into the mounting hole 330. The nut assembly 400 includes a nut body 410 and a connecting plate 420 that are connected to each other. The connecting plate 420 is made of metal, preferably SUS303 or SUS304. The nut body 410 can be made of PPS, which is a new type of high-performance thermoplastic resin with the advantages of high mechanical strength, high temperature resistance, chemical resistance, flame retardancy, good thermal stability, and excellent electrical properties. By making the nut body 410 of engineering plastics, it can be injection molded, and the quality of the thread can be guaranteed by the mold. Injection molding is not only efficient, but also has better thread quality stability.

[0038] The connecting plate 420 is fixedly connected to the nut body 410. The connecting plate 420 and the nut body 410 can be welded or injection molded as one. The connecting plate 420 can be stamped. Preferably, the nut assembly 400 is pre-installed in the mold through the connecting plate 420, and is embedded in the nut body 410 after being integrally molded by injection molding of PPS material.

[0039] The mounting hole 330 includes a first hole section 331 and a second hole section 332 that are connected. The length of the first hole section 331 in the axial direction of the mounting hole 330 is greater than the length of the second hole section 332 in the axial direction of the mounting hole 330. The nut body 410 penetrates the first hole section 331 through the second hole section 332. The connecting plate 420 is disposed in the second hole section 332 and connected to the inner wall surface of the second hole section 332. The connecting plate 420 and the connecting seat 300 are fixedly connected together, so that the nut assembly 400 is fixedly connected to the connecting seat 300. The connecting plate 420 and the connecting seat 300 can be fixedly connected by laser welding, soldering or ultrasonic metal welding, which helps to enhance the stability and connectivity between the nut assembly 400 and the connecting seat 300.

[0040] In one embodiment, a positioning surface 333 is formed at the connection between the first hole segment 331 and the second hole segment 332, and the connecting plate 420 abuts against the positioning surface 333. The outer peripheral edge of the connecting plate 420 is bent away from the first hole segment 331 to form a flange 430, and the flange 430 is connected to the inner peripheral wall of the second hole segment 332.

[0041] Please refer to Figures 2 to 5 A positioning surface 333 is formed at the connection between the first hole section 331 and the second hole section 332. The diameter of the second hole section 332 is larger than the diameter of the first hole section 331, and the positioning surface 333 faces the second hole section 332. The positioning surface 333 helps to ensure that the connecting plate 420 can be accurately arranged in the second hole section 332, thereby ensuring the accuracy of the position of the connecting plate 420, and further ensuring the accuracy of the position of the nut assembly 400 connected to the connecting seat 300, so as to ensure the reliability of the operation of the electronic expansion valve 10.

[0042] The outer peripheral edge of the connecting plate 420 is bent away from the first hole section 331 to form a flange 430, so that the connecting plate 420 can be better fixed in the second hole section 332, and the contact area between the connecting plate 420 and the inner peripheral wall of the second hole section 332 is increased, further improving the firmness and stability of the connection. The setting of the flange 430 not only strengthens the connection between the connecting plate 420 and the connecting seat 300, but also helps to reduce the influence of looseness and vibration on the connection, thereby improving the reliability and durability of the overall structure.

[0043] On the other hand, the welding points of the original continuous laser welding of the valve housing 100 and the step surface 321 and the pulsed laser welding of the connecting plate 420 and the second hole section 332 are close to the nut body 410. During welding, the heat will be transferred to the nut body 410, causing the nut body 410 to burn, and even the plastic melt will escape from the nut body 410 and enter the interior of the valve body, causing the valve body to get stuck. It may also cause the internal thread of the nut body 410 to deform, affecting the screw engagement of the screw rod, increasing friction resistance, and causing it to get stuck. The technical solution of the utility model increases the distance L from the step surface 321 to the first connecting section 310 from the original 1mm to more than 3mm, so that the welding points of the valve housing 100 and the step surface 321 are far away from the nut body 410, and at the same time, a flange 430 is set on the outer periphery of the connecting plate 420, so that the welding points of the flange 430 and the connecting seat 300 are also far away from the nut body 410, thereby reducing the risk of burning and deformation of the nut body 410.

[0044] In addition, since the distance L from the step surface 321 to the first connecting section 310 is increased from less than 1 mm to more than 3 mm, the overall axial dimension of the connecting seat 300 is increased. By setting a flange 430 on the outer periphery of the connecting plate 420, the flange 430 can be welded to the second hole section 332. At the same time, the positions of the connecting plate 420 and the nut body 410 in the mounting hole 330 do not change, and there is no need to adjust the position and size of the nut assembly 400 and other components of the electronic expansion valve 10, which saves development costs and improves the manufacturability of the electronic expansion valve 10.

[0045] In one embodiment, the flange 430 is cylindrical.

[0046] Please refer to Figure 5 The flange 430 of the connecting plate 420 is formed by stamping and stretching, and the flange 430 is cylindrical, so that the outer peripheral dimensional accuracy and form and position tolerance of the connecting plate 420 are good. The connecting plate 420 and the inner peripheral wall of the second hole section 332 are tightly matched and welded, so that the coaxiality of the nut assembly 400 and / or the connecting seat 300 is highly guaranteed, thereby improving the coaxiality of the valve needle and the valve port, avoiding poor internal leakage of the electronic expansion valve 10 when closing the valve, affecting the system energy efficiency, and also avoiding the valve needle and the valve port. Long-term unilateral contact easily leads to stuck failure.

[0047] In one embodiment, the length of the flange 430 in the axial direction of the connecting seat 300 is greater than the length of the second hole section 332 in the axial direction thereof.

[0048] Please refer to Figure 2The length of the flange 430 in the axial direction of the connection seat 300 is designed to be greater than the length of the second hole section 332 in the axial direction, ensuring that the flange 430 of the connection plate 420 can fully cover and connect to the inner circumferential wall of the second hole section 332, thereby enhancing the stability and firmness between the connection plate 420 and the connection seat 300. By making the flange 430 longer than the second hole section 332, it can be ensured that the connection plate 420 can be firmly fixed in the connection seat 300 during installation, effectively preventing loosening and falling off, which not only improves the reliability of the connection between the connection seat 300 and the nut assembly 400, but also helps to reduce the interference of vibration and external influences on the connection, further improving the performance and stability of the electronic expansion valve 10.

[0049] In addition, the connection plate 420 and the second hole segment 332 are welded by pulse laser, and the flange 430 protrudes from the end surface of the second hole segment 332 away from the first hole segment 331, which makes it more convenient to weld the flange 430.

[0050] In one embodiment, the flange 430 is welded and / or interference fit with the second hole section 332 .

[0051] Please refer to Figure 2 , the flange 430 and the second hole segment 332 can be connected by welding and / or interference fit. By welding, the flange 430 of the connecting plate 420 and the second hole segment 332 can be firmly combined to ensure the stability and reliability of the connection. The flange 430 of the connecting plate 420 and the second hole segment 332 are tightly matched by interference fit, thereby increasing the closeness and stability of the connection. In one embodiment, the flange 430 and the second hole segment 332 are first tightly matched and then laser welded, which not only ensures the firmness of the connection between the connecting plate 420 and the second hole segment 332, but also helps to reduce the influence of looseness and vibration on the connection between the connecting seat 300 and the nut assembly 400, thereby improving the reliability and durability of the overall structure of the electronic expansion valve 10.

[0052] In one embodiment, the outer peripheral wall of the nut body 410 and the inner peripheral wall of the first hole section 331 are clearance-matched.

[0053] Please refer to Figure 2The outer peripheral wall of the nut body 410 and the inner peripheral wall of the first hole section 331 are matched with each other in a clearance, so that an annular groove is formed between the outer peripheral wall of the nut body 410 and the inner peripheral wall of the first hole section 331. The annular groove has the function of a heat-insulating cavity. When welding the connecting plate 420 and the connecting seat 300, and welding the valve housing 100 and the step surface 321, the heat generated by welding will not be directly transferred from the connecting seat 300 to the nut body 410, but will be dissipated from the annular groove, thereby reducing the influence of the heat generated by welding on the nut body 410, avoiding the burning and accelerated aging of the nut body 410, and extending the service life of the electronic expansion valve 10. At the same time, it reduces the risk of foreign matter melted and resolidified by the nut body 410 material being brought into the refrigeration system, causing the system to be stuck.

[0054] In one embodiment, the inner circumferential wall of the first hole section 331 forms a first abutting surface 334 facing the second hole section 332 , and the outer circumferential wall of the nut body 410 forms a second abutting surface 411 facing away from the second hole section 332 , and the first abutting surface 334 abuts against the second abutting surface 411 .

[0055] Please refer to Figures 2 to 4 The inner peripheral wall of the first hole section 331 forms a first abutting surface 334 facing the second hole section 332, while the outer peripheral wall of the nut body 410 forms a second abutting surface 411 facing away from the second hole section 332. Through the abutment between the first abutting surface 334 and the second abutting surface 411, the nut body 410 can be accurately positioned in the first hole section 331 and form a tight connection with the connecting seat 300, thereby enhancing the stability and reliability of the overall structure. At the same time, the first abutting surface 334 supports the nut body 410, and the nut body 410 can be effectively fixed in the mounting hole 330, and is not easy to loosen or fall off along the axial direction of the mounting hole 330, thereby ensuring the stability of the electronic expansion valve 10 during use.

[0056] In one embodiment, the nut body 410 and the connecting plate 420 are integrally formed.

[0057] The connecting plate 420 and the nut body 410 are integrally formed by injection molding, and the fit between the two is tighter, the connection stability is good, and the fixed connection between the connecting plate 420 and the nut body 410 is achieved. Due to the use of injection molding, the coaxiality of the nut body 410 and the connecting plate 420 is guaranteed. The connecting plate 420 is fixedly connected to the connecting seat 300, and further, the connecting seat 300 can well control the coaxiality of the installation of the nut body 410.

[0058] In one embodiment, the valve housing 100 is welded to the step surface 321 .

[0059] Please refer to Figure 2, the valve housing 100 and the step surface 321 are tightly fitted and press-fitted, and then laser welded to seal the connection. By welding the valve housing 100 and the step surface 321 together, a solid connection and good sealing can be ensured between the valve housing 100 and the connecting seat 300, and leakage and other problems caused by loosening or falling off can be prevented. Since the distance L from the step surface 321 to the first connecting section 310 is limited to be greater than or equal to 3mm, when the valve housing 100 and the step surface 321 are laser welded, the welding ash / black will run away along the two sides of the valve housing 100, and will not remain on the end surface of the first connecting section 310, thereby reducing the process of manually removing the welding ash / black, and improving the production efficiency of the electronic expansion valve 10.

[0060] The utility model also proposes a refrigeration device, which includes an electronic expansion valve 10. The specific structure of the electronic expansion valve 10 refers to the above embodiment. Since the refrigeration device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0061] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An electronic expansion valve, characterized in that: include: Valve housing; A connecting seat having a mounting hole extending axially therethrough, the connecting seat comprising a first connecting section and a second connecting section, the first connecting section being used to connect to the valve seat of the electronic expansion valve, the second connecting section being connected to the first connecting section, the outer peripheral wall of the second connecting section being formed with a step surface, one end of the valve housing being arranged on the step surface, the distance from the step surface to the first connecting section being L, L ≥ 3 mm.

2. The electronic expansion valve according to claim 1, characterized in that: The electronic expansion valve also includes a nut assembly passing through the mounting hole, the nut assembly includes a nut body and a connecting plate connected to each other, the mounting hole includes a first hole segment and a second hole segment connected to the first hole segment, the nut body passes through the first hole segment from the second hole segment, the connecting plate is arranged in the second hole segment and connected to the inner wall surface of the second hole segment.

3. The electronic expansion valve according to claim 2, characterized in that: A positioning surface is formed at the connection between the first hole segment and the second hole segment, the connecting plate abuts against the positioning surface, and the outer peripheral edge of the connecting plate is bent away from the first hole segment to form a flange, and the flange is connected to the inner peripheral wall of the second hole segment.

4. The electronic expansion valve according to claim 3, characterized in that: The flange is cylindrical.

5. The electronic expansion valve according to claim 3, characterized in that: The length of the flange in the axial direction of the connecting seat is greater than the length of the second hole segment in the axial direction thereof.

6. The electronic expansion valve according to claim 3, characterized in that: The flange is welded and / or interference fit with the second hole segment.

7. The electronic expansion valve according to claim 2, characterized in that: The outer peripheral wall of the nut body is clearance-matched with the inner peripheral wall of the first hole segment.

8. The electronic expansion valve according to claim 7, characterized in that: The inner peripheral wall of the first hole segment is formed with a first abutting surface facing the second hole segment, the outer peripheral wall of the nut body is formed with a second abutting surface facing away from the second hole segment, and the first abutting surface abuts against the second abutting surface.

9. The electronic expansion valve according to claim 2, characterized in that: The nut body and the connecting plate are integrally formed.

10. The electronic expansion valve according to claim 1, characterized in that: The valve housing is welded to the step surface.

11. A refrigeration device, characterized in that: Comprising the electronic expansion valve as described in any one of claims 1-10.

Images