CN204494927U - The Novel straw structure of reservoir - Google Patents

Abstract

The utility model relates to a novel suction pipe structure for a liquid storage device, which comprises an L-shaped iron pipe section, the two ends of which are respectively the top end and the tail end. The outer wall of the tail end of the iron pipe section is connected together by brazing in the furnace; this new straw structure, the L-shaped iron pipe section is composed of iron pipe as a whole, and the inner wall at one end of the copper pipe is welded to the outer wall at the end of the iron pipe section, that is, the iron pipe section The tail end does not need to be flared. Moreover, this welding method of the copper pipe section and the iron pipe section greatly increases the contact area between the two, significantly improving the firmness and sealing of the connection between the two. The process is simple and the cost is low, especially suitable for Fully automated production of pipe fittings manufacturing enterprises; moreover, this new straw structure has a simple and reasonable structure and is easy to implement.

Description

New Straw Structure for Liquid Reservoir

technical field

The utility model relates to a suction pipe of a liquid accumulator, in particular to a novel suction pipe structure applied to a liquid accumulator on a rotary compressor.

Background technique

The liquid accumulator used in the existing rotary compressor mainly has the following two commonly used structures for the suction pipe used: scheme 1, as shown in Figure 1, the suction pipe 4 is passed through the furnace by an iron straight pipe 41 and a copper curved pipe 42 Brazing technology is welded into an L-shaped pipe body, and its iron straight pipe 41 part is arranged in the liquid reservoir, and the copper elbow 42 part extends out of the liquid reservoir; the suction pipe 4 for the liquid reservoir of the above-mentioned structure has the following disadvantages Advantages: (1) The copper pipe section 42 in the straw 4 is longer, which increases the manufacturing cost of the straw 4; (2) The straw 4 is welded by two materials of iron and copper, which increases the difficulty of the production process of the straw 4 itself; ( 3) One end of the iron pipe section 41 of the suction pipe 4 is set in a flaring shape, and one end of the flaring is set on the outer wall of one end of the copper pipe section 42, that is, between the inner wall of the iron pipe 41 flared and the outer wall of the copper pipe 42 Welding connection is restricted by the small area of the flaring section of the iron pipe 41, causing their connection area to be small, the welding is not firm, and the welding is easy to leak.

Option 2, as shown in Figure 2, is another suction pipe 5 for the liquid reservoir. It is an iron pipe, and there is no need to weld the two materials when the iron suction pipe 5 is manufactured, which simplifies the production process of the iron suction pipe 5 to a certain extent, and the tail of the iron suction pipe 5 does not need to use a copper pipe, which also reduces the manufacturing cost of the iron suction pipe 5. But this iron straw still has the following deficiencies: (1) the tail end of the iron straw 5 is set in a flared shape, and one end of the flare is sleeved on the outer wall of the externally connected copper pipe 6, that is, the iron straw 5 The inner wall of the flaring part is welded to the outer wall of one end of the external copper pipe 6, which is restricted by the small area of the flaring section of the iron suction pipe 5, so that the area of their connection is also small, and the welding is not firm all the time; (2) In view of the liquid storage The seal required by the device is extremely high, and the unit leakage rate of the straw is required to be extremely low. Obviously, the welding area between the inner wall at the flaring of the iron straw 5 and the outer wall at the end of the external copper pipe 6 is too small, resulting in poor welding tightness. , easy to leak because of the welding surface, can not meet the requirements of use, therefore, the straw of this structure still can not be really applied, at least it is difficult to popularize and use.

Utility model content

The purpose of the utility model is to overcome the various deficiencies in the above-mentioned prior art, and provide a new type of suction pipe for the liquid reservoir with simple and reasonable structure, simple process, low cost, fully automatic production, firm welding and high sealing performance. structure.

The purpose of this utility model is achieved in that:

The novel suction pipe structure used for the liquid storage device includes an L-shaped iron pipe section, and the two ends of the iron pipe section are the top and the tail end respectively. It is characterized in that it also includes a copper pipe section. The outer wall is connected together by brazing in the furnace; this new type of suction pipe structure, the L-shaped iron pipe section is composed of iron pipe as a whole, and the inner wall at one end of the copper pipe is welded to the outer wall at the end of the iron pipe section, that is, the tail end of the iron pipe section does not need to be flared. Moreover, this welding method of the copper pipe section and the iron pipe section greatly increases the contact area between the two, significantly improves the firmness and sealing of the connection between the two, and the process is simple and the cost is low. It is especially suitable for the full automation of pipe fitting manufacturing enterprises. production; moreover, this novel straw structure has a simple and reasonable structure and is easy to implement.

The utility model can also adopt the following technical measures to solve:

As a more specific solution, one end of the copper pipe section is sleeved on the outer wall of the tail end of the iron pipe section, and the contact surface between the two is welded.

The beneficial effects of the utility model are as follows:

(1) This new type of suction pipe, the L-shaped iron pipe section is composed of iron pipe as a whole, and the inner wall at one end of the copper pipe section is welded to the outer wall at the end of the iron pipe section, that is, the tail end of the iron pipe section does not need to be flared, and this copper pipe section The welding method of the sleeve iron pipe section greatly increases the contact area between the two, significantly improves the firmness and sealing of the connection between the two, and the process is simple and the cost is low, especially suitable for the fully automated production of pipe fitting manufacturing enterprises; moreover, this new type The straw structure has a simple and reasonable structure and is easy to implement.

Description of drawings

Fig. 1 is a schematic diagram of Embodiment 1 of a suction pipe for a liquid accumulator of an existing rotary compressor;

Fig. 2 is a schematic diagram of Embodiment 2 of the suction pipe for the liquid accumulator of the existing rotary compressor;

Fig. 3 is a schematic diagram of a novel suction pipe for a liquid accumulator of a rotor compressor of the present invention.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

As shown in Figure 3, the novel suction pipe structure used in the liquid reservoir includes an L-shaped iron pipe section 1, and the two ends of the iron pipe section 1 are the top end and the tail end respectively. It is characterized in that it also includes a copper pipe section 2 and a copper pipe section 2 The inner wall at one end and the outer wall at the tail end of the iron pipe section 1 are connected together by brazing in a furnace.

As a more specific solution, one end of the copper pipe section 2 is sleeved on the outer wall of the tail end of the iron pipe section 1, and the contact surface between the two is welded.

This new type of suction pipe, the L-shaped iron pipe section 1 is composed of iron pipe as a whole, and the inner wall of one end of the copper pipe section 2 is welded to the outer wall of the tail end of the iron pipe section 1, that is, the tail end of the iron pipe section 1 does not need to be flared, and this copper pipe The welding method of section 2 sets of iron pipe section 1 greatly increases the contact area between the two, significantly improves the firmness and sealing of the connection between the two, and the process is simple and the cost is low, which is especially suitable for the fully automated production of pipe fitting manufacturing enterprises; moreover, The novel straw structure has a simple and reasonable structure and is easy to implement.

Claims (2)

1. The new type of straw structure for the liquid reservoir, including L-shaped iron pipe section (1), the two ends of the iron pipe section (1) are the top end and the tail end respectively, and the feature is that it also includes a copper pipe section (2), copper pipe section The inner wall at one end of the section (2) and the outer wall at the tail end of the iron pipe section (1) are connected together by brazing in a furnace. 2. The novel suction pipe structure for the liquid reservoir according to claim 1, characterized in that one end of the copper pipe section (2) is sleeved on the outer wall of the tail end of the iron pipe section (1), and the contact surface between the two For solder connection.