Pressure control type lithium bromide absorption refrigeration bubble pump

Abstract

The present application relates to a kind of pressure control type lithium bromide absorption refrigeration bubble pump, including reservoir, buffer chamber, first pressure divider, second pressure divider and third pressure divider;The reservoir upper middle part is equipped with reservoir outlet;The reservoir outlet is connected with high buffer chamber;The buffer chamber is connected with the bottom of first pressure divider;The first pressure divider is connected with second pressure divider, and the second pressure divider is connected with third pressure divider;The rear side of the reservoir is provided with the refrigerant inlet corresponding to each pressure divider;The rear side of the reservoir is provided with the lift tube interface corresponding to each refrigerant inlet;Each pressure divider is connected with corresponding refrigerant inlet;The front end surface of the reservoir is provided with heat exchanger interface and reservoir inlet respectively.The present application can be inputted into the lift tube by certain pressure control to the bubble generated by bubble pump within certain pressure range of steam for lifting lithium bromide solution, can stably improve the lifting efficiency of lithium bromide absorption refrigeration bubble pump.

Description

Technical Field

[0001] This invention relates to the fields of absorption refrigeration and low-grade energy utilization technology, and particularly to a pressure-controlled lithium bromide absorption refrigeration bubble pump. Background Technology

[0002] Currently, in the field of lithium bromide absorption refrigeration, the bubble pump is a key component of pumpless lithium bromide absorption chillers. The operating performance of the bubble pump directly affects the entire lithium bromide absorption refrigeration system. Although some scholars have conducted relevant research on the structure and bubble flow pattern of bubble pumps, striving to maintain a slug-like or block-like flow in the riser tube of the bubble pump to achieve optimal lifting efficiency, bubble pumps still suffer from problems such as unstable efficiency. Summary of the Invention

[0003] To address the aforementioned problems, the present invention aims to provide a pressure-controlled lithium bromide absorption refrigeration bubble pump, which can divert the bubbles generated by the bubble pump through a certain pressure control, and then continuously input steam within a certain pressure range into the riser pipe to lift the lithium bromide solution in the form of a slug flow or a block flow, thereby improving the lifting efficiency and stability of the lithium bromide absorption refrigeration bubble pump.

[0004] The technical solution adopted in this invention is as follows:

[0005] This invention proposes a pressure-controlled lithium bromide absorption refrigeration bubble pump, comprising a receiver, a buffer chamber, a first pressure divider, a second pressure divider, and a third pressure divider. The receiver has a receiver outlet at the center of its upper front surface. The receiver outlet is connected to the bottom of the buffer chamber, which is located at a higher position, via a hose. The upper end of the buffer chamber is connected to the bottom of the first pressure divider. The first pressure divider is connected to the second pressure divider, and the second pressure divider is connected to the third pressure divider. The lower rear region of the receiver has refrigerant inlets corresponding to each pressure divider. The upper rear region of the receiver has riser interfaces corresponding to each refrigerant inlet, used to connect riser pipes to the lithium bromide absorption refrigeration system. The first, second, and third pressure dividers are connected to their respective refrigerant inlets via hoses. The upper part of the receiver's front surface has a heat exchanger interface, and the lower part has a receiver inlet.

[0006] Furthermore, the liquid reservoir is provided with a liquid storage chamber I and a liquid storage chamber II, which are separated by a baffle and are connected only at the bottom.

[0007] Furthermore, the first, second, and third voltage dividers have the same structure, including a lower voltage divider chamber, an upper voltage divider chamber, an end cap, an inner liner block, a first regulator, a second regulator, a first micro spring, a second micro spring, a first spring limiter, a second spring limiter, and a moving stop bar;

[0008] The pressure divider chamber has a pressure divider inlet at its bottom and a strip-shaped outlet in the lower middle part of one side. A second pressure divider outlet is located outside the strip-shaped outlet. A first spring limiter is located in the middle of the lower pressure divider chamber. The lower part of the first regulator covers the pressure divider inlet, and the upper part vertically passes through the middle of the first spring limiter. The first micro spring is sleeved in the lower middle part of the first regulator, and its upper part is located at the bottom of the first spring limiter. It is limited by a limiting nut on the first regulator. A movable stop bar is connected to the lower part of the first regulator. One side of the movable stop bar covers the inside of the strip-shaped outlet.

[0009] The pressure-dividing upper chamber consists of two chambers connected by a limiting circular tube. The bottom of the lower chamber of the pressure-dividing upper chamber is bolted to the top of the lower chamber, and an inner liner block is provided inside the lower chamber. The end cap is correspondingly and sealingly connected to the top of the upper chamber of the pressure-dividing upper chamber, and a first pressure-dividing outlet is coaxially provided in the middle of the end cap and the limiting circular tube. A second spring limiter is provided in the middle of the upper chamber of the pressure-dividing upper chamber. A second adjuster is provided between the second spring limiter and the inner liner block. The bottom of the second adjuster is located inside the inner liner block and its diameter is larger than the diameter of the limiting circular tube. The upper part of the second adjuster passes through the limiting circular tube and the middle of the second spring limiter in sequence. The second micro spring is sleeved in the upper part of the second adjuster, and its upper part is located at the bottom of the second spring limiter. The two ends of the second micro spring are limited by two limiting nuts provided on the adjuster.

[0010] The first pressure divider has its bottom inlet connected to the top of the buffer chamber, its side second pressure divider outlet connected to the bottom inlet of the second pressure divider via a hose, its side second pressure divider outlet connected to the bottom inlet of the third pressure divider via a hose, and its side second pressure divider outlet sealed with a sealing cap; the first pressure divider outlet of each pressure divider is connected to the corresponding refrigerant inlet.

[0011] Furthermore, the first regulator and the second regulator have the same structure, both consisting of a lightweight disc and a smooth lightweight circular shaft coaxially fixed to the upper end face of the lightweight disc.

[0012] Furthermore, the regulator is made of lightweight polyvinyl chloride material.

[0013] Furthermore, the middle part of the inner liner block is configured with a large-diameter circular hole and a small-diameter circular hole from top to bottom. The lightweight circular plate at the bottom of the second adjuster is located inside the large-diameter circular hole, and the large-diameter circular hole has two opposing rectangular grooves on its side.

[0014] Furthermore, the movable baffle is a lightweight rectangular piece bent at right angles, made of lightweight polyvinyl chloride material, with one side fitted onto the lightweight round shaft of the first regulator and the other side correspondingly covering the strip-shaped outlet.

[0015] Furthermore, the first spring limiter and the second spring limiter have the same structure, both being I-shaped structures, and each has a cylindrical through hole in the middle for passing through a lightweight round shaft.

[0016] Furthermore, the refrigerant inlet and the corresponding riser pipe interface are connected on the same side inside the receiver via an inner liner.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. The present invention adopts an integrated two-cavity structural design, which saves space and reduces related sealing operations.

[0019] 2. This invention separates the gas generation process and the transport process in the bubble pump, and can control the airflow transported to each riser according to the pressure range, which can ultimately transform the unstable gas generation process into a stable lifting effect.

[0020] 3. The present invention allows for the selection of the number of pressure dividers according to actual conditions, and the pressure of each pressure divider can be adjusted in advance to adapt to the operating conditions of the lithium bromide absorption refrigeration system. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic cross-sectional view of the liquid reservoir of the present invention;

[0023] Figure 3 This is a schematic cross-sectional view of the voltage divider of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the inner liner block of the present invention;

[0025] Figure 5 This is a schematic diagram of the spring limiter of the present invention.

[0026] In the attached drawings, the reference numerals are as follows: 1-Liquid receiver; 2-Liquid receiver inlet; 3-Heat exchanger interface; 4-Buffer chamber; 5-First pressure divider; 6-Second pressure divider; 7-Third pressure divider; 8-First riser interface; 9-Second riser interface; 10-Third riser interface; 11-Third refrigerant inlet; 12-Second refrigerant inlet; 13-First refrigerant inlet; 14-Liquid receiver I; 15-Liquid receiver outlet; 16-Liquid receiver II; 17- Inner liner chamber; 18-Pressure divider inlet; 19-First regulator; 20-First spring limiter; 21-Limit fixing nut; 22-Lower pressure divider chamber; 23-Inner liner block; 24-First pressure divider outlet; 25-End cap; 26-Upper pressure divider chamber; 27-Strip outlet; 28-Hose; 29-Second pressure divider outlet; 30-First miniature spring; 31-Moving stop bar; 32-Second regulator; 33-Second miniature spring; 34-Second spring limiter. Detailed Implementation

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] It should be noted that in the description of this invention, the terms "upper", "lower", "top", "bottom", "one side", "the other side", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and do not mean that the device or element must have a specific orientation, or be constructed and operated in a specific orientation.

[0029] See appendix Figure 1-5 This paper presents a specific structure of an embodiment of a pressure-controlled lithium bromide absorption refrigeration bubble pump proposed in this invention. The bubble pump includes a liquid receiver 1, a buffer chamber 4, a first pressure divider 5, a second pressure divider 6, and a third pressure divider 7.

[0030] The receiver 1 has a receiver outlet 15 located in the middle of the upper front surface. The receiver outlet 15 is connected to the bottom of the buffer chamber 4, which is located at a higher position, via a hose. The function of the buffer chamber 4 is to prevent lithium bromide solution from rushing into the first pressure divider 5 due to excessive instantaneous gas production in the receiver 114. The upper end of the buffer chamber 4 is connected to the bottom of the first pressure divider 5. The first pressure divider 5 is connected to the second pressure divider 6, and the second pressure divider 6 is connected to the third pressure divider 7. The lower rear side of the receiver 1 is provided with a first refrigerant inlet 13, a second refrigerant inlet 12, and a third refrigerant inlet 11, which correspond one-to-one with the first pressure divider 5, the second pressure divider 6, and the third pressure divider 7, respectively. The upper rear side of the liquid receiver 1 is provided with a first riser pipe interface 8, a second riser pipe interface 9, and a third riser pipe interface 10, which correspond one-to-one with each refrigerant inlet. These interfaces are used to connect the riser pipes to the lithium bromide absorption refrigeration system. The first pressure divider 5, the second pressure divider 6, and the third pressure divider 7 are connected to the first refrigerant inlet 13, the second refrigerant inlet 12, and the third refrigerant inlet 11, respectively, via flexible hoses. The upper part of the front end face of the liquid receiver 1 is provided with a heat exchanger interface 3, and the lower part is provided with a liquid receiver 2 inlet. The lithium bromide solution in the liquid receiver 1 enters from the liquid receiver inlet 2, and low-grade heat energy heats the lithium bromide solution in the liquid receiver 1 through the heat exchanger interface 3.

[0031] like Figure 2 As shown in this embodiment, the liquid reservoir 1 is divided into a liquid storage chamber I 14 and a liquid storage chamber II 16. The liquid storage chamber I 14 and the liquid storage chamber II 16 are separated by a baffle and are only connected at the bottom. The function of the baffle is to prevent water vapor bubbles generated in the liquid storage chamber I 14 from directly entering the liquid storage chamber II 16.

[0032] The first refrigerant inlet 13, the second refrigerant inlet 12, and the third refrigerant inlet 1 each extend a short section of circular tube inside the receiver 1, with the top of the circular tube higher than the bottom edge of the inner liner chamber. The first riser interface 8, the second riser interface 9, and the third riser interface 10 are all connected to the first refrigerant inlet 13, the second refrigerant inlet 12, and the third refrigerant inlet 11 respectively through the inner liner chamber 17 inside the receiver 1. The inner liner chamber 17 is a cylindrical hollow cavity with an open bottom and an opening at the top for connecting the corresponding refrigerant inlets, used to collect water vapor bubbles from the first refrigerant inlet 13, the second refrigerant inlet 12, and the third refrigerant inlet 11, preventing the bubbles from escaping elsewhere.

[0033] like Figure 3As shown, the first pressure divider 5, the second pressure divider 6, and the third pressure divider 7 have the same structure, each including a first regulator 19, a first spring limiter 20, a lower pressure divider chamber 22, an inner liner block 23, an end cap 25, an upper pressure divider chamber 26, a first miniature spring 30, a moving stop bar 31, a second regulator 32, a second miniature spring 33, and a second spring limiter 34.

[0034] The pressure-dividing chamber 22 has a pressure-dividing inlet 18 at its bottom, a strip-shaped outlet 27 in the lower middle part of one side, and a second pressure-dividing outlet 29 outside the strip-shaped outlet 27. A first spring limiter 20 is located in the middle of the pressure-dividing chamber 22. The first spring limiter has an I-shaped structure and a vertical cylindrical through hole in the middle. Rectangular plates on its front and rear sides are fixed to the vertical walls of the pressure-dividing chamber 22 with screws. The first regulator 19 consists of a lightweight disc and a smooth lightweight cylindrical shaft coaxially fixed to the upper surface of the lightweight disc. This maximizes the reduction of the influence of the mass of the first regulator 19 on the preset preload of the first micro-spring 30, improving the sensitivity of the micro-spring to airflow pressure. The lightweight disc of the first regulator 19 covers the pressure-dividing inlet 18. The shaft passes vertically through the cylindrical through hole in the middle of the first spring limiter 20; the first micro spring 30 is sleeved on the lower middle region of the lightweight round shaft of the first adjuster 19, and its upper part is located at the bottom of the cylindrical through hole of the first spring limiter 20. The upper end of the first micro spring 30 is limited by the limiting and fixing nut 21, which is set at the upper end of the cylindrical through hole in the middle of the first spring limiter 20 and connected to the lightweight round shaft of the first adjuster 19; a movable stop bar 31 is connected to the lower part of the lightweight round shaft of the first adjuster 19. The movable stop bar 31 is a lightweight rectangular piece bent at a right angle, made of lightweight polyvinyl chloride material. One side of the stop bar is sleeved on the lower part of the lightweight round shaft of the first adjuster 19 and fixed tightly to the lightweight round piece with a nut to limit the lower end of the first micro spring. The other side covers the strip-shaped outlet 27. The movable baffle 31 moves up and down with the first regulator 19. After the movable baffle 31 moves up a small distance, the strip outlet 27 will connect with the lower pressure chamber 22 and the second pressure outlet 29. As the movable baffle 31 moves up a greater distance, the opening of the strip outlet 27 becomes larger, resulting in a larger gas flow rate.

[0035] The pressure-dividing upper chamber 26 consists of two square chambers connected by a limiting circular tube. The bottom of the lower chamber of the pressure-dividing upper chamber 26 is bolted to the top of the pressure-dividing lower chamber 22, and an inner liner block 23 is embedded between the interior of the lower chamber of the pressure-dividing upper chamber 26 and the top of the pressure-dividing lower chamber 22. The end cap 25 is bolted to the top of the upper chamber of the pressure-dividing upper chamber 26, and a first pressure-dividing outlet 24 is coaxially arranged in the middle of the end cap 25 with the limiting circular tube. A second spring limiter 34, with the same structure as the first spring limiter 20, is arranged in the middle of the upper chamber of the pressure-dividing upper chamber 26. A second adjuster 32 is arranged between the second spring limiter 34 and the inner liner block 23. The second regulator 32 has the same structure as the first regulator 19 and is made of lightweight polyvinyl chloride material. The lightweight disc of the second regulator 32 is located inside the inner liner block 23 and its diameter is larger than that of the limiting circular tube. The lightweight circular shaft of the second regulator 32 passes through the limiting circular tube and the cylindrical through hole in the middle of the second spring limiter 34 in sequence. The second micro spring 33 is sleeved in the upper middle region of the lightweight circular shaft of the second regulator 32, and its upper part is located at the bottom of the cylindrical through hole of the second spring limiter 34. The two ends of the second micro spring 33 are respectively limited by the limiting fixing nuts 21 set at the upper end and the middle of the lightweight circular shaft of the second regulator 32.

[0036] In this embodiment, the middle part of the inner liner block 23 is configured with a large-diameter circular hole and a small-diameter circular hole on the same axis from top to bottom. The lightweight circular plate at the bottom of the second regulator 32 is located in the large-diameter circular hole, and two opposing rectangular grooves are opened on the left and right sides of the large-diameter circular hole. This is to make the gas pressure at the bottom of the lightweight circular plate of the second regulator 32 more uniform during the process of gas entering the upper chamber of the pressure dividing chamber 26 through the second regulator 32.

[0037] The pressure divider inlet 18 at the bottom of the first pressure divider 5 is connected to the top of the buffer chamber 4 via a hose. The second pressure divider outlet 29 on the side is connected to the pressure divider inlet 18 at the bottom of the second pressure divider 6 via a hose 28. The second pressure divider outlet 29 on the side of the second pressure divider 6 is connected to the pressure divider inlet 18 at the bottom of the third pressure divider 7 via a hose 28. The second pressure divider outlet 29 on the side of the last pressure divider, namely the third pressure divider 7, is sealed with a sealing cap. The first pressure divider outlet 24 of the first pressure divider 5 is connected to the first refrigerant inlet 13 via a hose. The first pressure divider outlet 24 of the second pressure divider 6 is connected to the second refrigerant inlet 12 via a hose. The first pressure divider outlet 24 of the third pressure divider 7 is connected to the third refrigerant inlet 11 via a hose.

[0038] The working process of this invention in a pumpless lithium bromide absorption refrigeration system is as follows: Before the bubble pump is connected to the lithium bromide absorption refrigeration system, the preload of the first micro spring 30 and the second micro spring 33 in each pressure divider is adjusted by rotating the limiting fixing nut 21. The preload of the first micro spring 30 at the inlet of the first pressure divider 5 is less than the elastic force of the second micro spring 33 when the upper second regulator 32 is completely closed. Moreover, the first micro spring 30 at the inlet of the first pressure divider 5 is compressed so that the elastic force of the moving baffle 31 opening the strip outlet 27 is slightly less than the elastic force of the second micro spring 33 when the upper second regulator 32 is completely closed. This ensures that the gas pressure fluctuation at the first pressure divider outlet 24 of the first pressure divider 5 is within a small range. When the gas pressure in the first pressure divider 5 is about to exceed this range, the second pressure divider outlet 29 is opened to allow excess gas to enter the second pressure divider 6.

[0039] Similarly, the preload of the first micro spring 30 at the inlet of the second pressure divider 6 is less than the elastic force of the moving baffle 31 in the first pressure divider 5 when opening the strip outlet 27. The preload of the first micro spring 30 at the inlet of the second pressure divider 6 is less than the elastic force of the second micro spring 33 when the upper second regulator 32 is fully closed. Moreover, the first micro spring 30 at the inlet of the second pressure divider 6 is compressed so that the elastic force of the moving baffle 31 when opening the strip outlet 27 is slightly less than the elastic force of the second micro spring 33 when the upper second regulator 32 is fully closed. This ensures that the gas pressure fluctuation at the first pressure divider outlet 24 of the second pressure divider 6 is within a small range. And when the gas pressure in the second pressure divider 6 is about to exceed this range, the second pressure divider outlet 29 is opened to allow excess gas to enter the third pressure divider 7.

[0040] The preload of the first miniature spring 30 at the inlet of the third voltage divider 7 should be less than the elastic force of the moving stop bar 31 in the second voltage divider 6 when opening the strip outlet 27. The preload of the first miniature spring 30 at the inlet of the third voltage divider 7 should be less than the elastic force of the second miniature spring 33 when the upper second regulator 32 is fully closed.

[0041] In the above settings for the first pressure divider 5, the second pressure divider 6, and the third pressure divider 7, the sealing requirements for the regulators are not high. It is not necessary for the first regulator 19 at the pressure divider inlet 18 to completely and absolutely isolate the inside of the pressure divider and the pipeline space. It is only necessary to be able to divide the gas according to pressure after the gas pressure reaches a certain level. Through the above settings for the first pressure divider 5, the second pressure divider 6, and the third pressure divider 7, the pressure range that the gas can pass through at the first pressure outlet 24 of the first pressure divider 5, the second pressure divider 6, and the third pressure divider 7 is sequentially connected and increases in a stepwise manner. Correspondingly, the diameter of the riser pipes connected at the first riser pipe interface 8, the second riser pipe interface 9, and the third riser pipe interface 10 should also increase in a stepwise manner to ensure that the flow pattern in each riser pipe is in a slug flow or block flow state, so as to achieve the optimal lifting capacity of the riser pipe.

[0042] In a lithium bromide absorption refrigeration system, lithium bromide solution flows from the high-level absorber into the low-level receiver 1 via receiver inlet 2. A low-quality heat source heats the lithium bromide solution in receiver 1's receiver chamber I14 through a heat exchanger interface, continuously generating bubbles. These bubbles pass through receiver outlet 15 and enter the hose connecting to buffer chamber 4. When the pressure between the bubbles above the lithium bromide solution surface in the hose and the pressure divider inlet 18 of the first pressure divider 5 is sufficient to push the first miniature spring 30 at the pressure divider inlet 18 of the first pressure divider 5, airflow enters the first pressure divider 5 and finally enters the hose connecting to the first refrigerant inlet 13 through the first pressure divider outlet 24 of the first pressure divider 5. Finally, it enters the riser through the first riser interface 8. The pipe is connected to a lithium bromide absorption refrigeration system. As the heating process proceeds, when the airflow in the first pressure divider 5 increases further, it will push the moving baffle 31 at the pressure divider inlet 18 of the first pressure divider 5 to continue moving upward, causing the strip outlet 27 to gradually open. The airflow enters the second pressure divider 6 through the second pressure divider outlet 29 of the first pressure divider 5. The second miniature spring 33 of the pressure divider upper chamber 26 of the first pressure divider 5 will be compressed, thereby reducing the gas flow through the first pressure divider outlet 24. The above process ensures that the gas pressure through the first pressure divider outlet 24 of the first pressure divider 5 is kept within a certain range, and excess gas is sent to the second pressure divider 6 through the second pressure divider outlet 29 of the first pressure divider 5.

[0043] The gas entering the second pressure divider 6 will enter the hose connecting the second refrigerant inlet 12 through the first pressure dividing outlet 24 of the second pressure divider 6, and finally enter the riser through the second riser interface 9 to connect to the lithium bromide absorption refrigeration system. When the gas flow rate in the second pressure divider 6 increases, it pushes the moving baffle 31 at the pressure divider inlet 18 of the second pressure divider 6 to continue to move upward, so that the strip outlet 27 gradually opens, and the airflow enters the third pressure divider 7 through the second pressure dividing outlet 29 of the second pressure divider 6. The second miniature spring 33 of the pressure dividing upper chamber 26 of the second pressure divider 6 will be compressed, thereby reducing the gas flow rate through the first pressure dividing outlet 24. The above process ensures that the gas pressure through the first pressure dividing outlet 24 of the second pressure divider 6 is kept within a certain range, and the excess gas is sent to the third pressure divider 7 through the second pressure dividing outlet 29 of the second pressure divider 6.

[0044] The gas entering the third pressure divider 7 will enter the hose connecting the third refrigerant inlet 11 through the first pressure divider outlet 24 of the third pressure divider 7, and finally enter the riser through the third riser interface 10 to connect to the lithium bromide absorption refrigeration system.

[0045] All matters not covered in this invention are common knowledge.

[0046] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A pressure-controlled lithium bromide absorption refrigeration bubble pump, characterized in that: The bubble pump includes a receiver, a buffer chamber, a first pressure divider, a second pressure divider, and a third pressure divider. The receiver has an outlet at the center of its upper front surface. The receiver outlet is connected to the bottom of the buffer chamber, which is located at a higher position, via a hose. The upper end of the buffer chamber is connected to the bottom of the first pressure divider. The first pressure divider is connected to the second pressure divider, and the second pressure divider is connected to the third pressure divider. The lower rear region of the receiver has refrigerant inlets corresponding to each pressure divider. The upper rear region of the receiver has riser interfaces corresponding to each refrigerant inlet, used to connect riser pipes to a lithium bromide absorption refrigeration system. The first, second, and third pressure dividers are connected to their respective refrigerant inlets via hoses. The upper front surface of the receiver has a heat exchanger interface, and the lower front surface has a receiver inlet.

2. The pressure-controlled lithium bromide absorption refrigeration bubble pump according to claim 1, characterized in that: The liquid reservoir has two chambers, namely storage chamber I and storage chamber II, which are separated by a baffle and connected only at the bottom.

3. The pressure-controlled lithium bromide absorption refrigeration bubble pump according to claim 1, characterized in that: The first, second, and third voltage dividers have the same structure, including a lower voltage divider chamber, an upper voltage divider chamber, an end cap, an inner liner block, a first regulator, a second regulator, a first micro spring, a second micro spring, a first spring limiter, a second spring limiter, and a moving stop bar; The pressure divider chamber has a pressure divider inlet at its bottom and a strip-shaped outlet in the lower middle part of one side. A second pressure divider outlet is located outside the strip-shaped outlet. A first spring limiter is located in the middle of the lower pressure divider chamber. The lower part of the first regulator covers the pressure divider inlet, and the upper part vertically passes through the middle of the first spring limiter. The first micro spring is sleeved in the lower middle part of the first regulator, and its upper part is located at the bottom of the first spring limiter. It is limited by a limiting nut on the first regulator. A movable stop bar is connected to the lower part of the first regulator. One side of the movable stop bar covers the inside of the strip-shaped outlet. The pressure-dividing upper chamber consists of two chambers connected by a limiting circular tube. The bottom of the lower chamber of the pressure-dividing upper chamber is bolted to the top of the lower chamber, and an inner liner block is provided inside the lower chamber. The end cap is correspondingly and sealingly connected to the top of the upper chamber of the pressure-dividing upper chamber, and a first pressure-dividing outlet is coaxially provided in the middle of the end cap and the limiting circular tube. A second spring limiter is provided in the middle of the upper chamber of the pressure-dividing upper chamber. A second adjuster is provided between the second spring limiter and the inner liner block. The bottom of the second adjuster is located inside the inner liner block and its diameter is larger than the inner diameter of the limiting circular tube. The upper part of the second adjuster passes through the limiting circular tube and the middle of the second spring limiter in sequence. The second micro spring is sleeved in the upper region of the second adjuster, and its upper part is located at the bottom of the second spring limiter. The two ends of the second micro spring are limited by two limiting and fixing nuts provided on the adjuster. The first pressure divider has its bottom inlet connected to the top of the buffer chamber, its side second pressure divider outlet connected to the bottom inlet of the second pressure divider via a hose, its side second pressure divider outlet connected to the bottom inlet of the third pressure divider via a hose, and its side second pressure divider outlet sealed with a sealing cap; the first pressure divider outlet of each pressure divider is connected to the corresponding refrigerant inlet.

4. A pressure-controlled lithium bromide absorption refrigeration bubble pump according to claim 3, characterized in that: The first regulator and the second regulator have the same structure, both consisting of a lightweight disc and a smooth, lightweight circular shaft coaxially fixed to the upper end face of the lightweight disc.

5. A pressure-controlled lithium bromide absorption refrigeration bubble pump according to claim 4, characterized in that: The regulator is made of lightweight polyvinyl chloride material.

6. A pressure-controlled lithium bromide absorption refrigeration bubble pump according to claim 4, characterized in that: The middle part of the inner liner block is configured with a large-diameter circular hole and a small-diameter circular hole from top to bottom. The lightweight circular plate at the bottom of the second adjuster is located in the large-diameter circular hole, and the large-diameter circular hole has two opposing rectangular grooves on its side.

7. A pressure-controlled lithium bromide absorption refrigeration bubble pump according to claim 4, characterized in that: The movable baffle is a lightweight rectangular piece bent at right angles, made of lightweight polyvinyl chloride material, with one side fitted onto the lightweight round shaft of the first regulator and the other side correspondingly covering the strip outlet.

8. A pressure-controlled lithium bromide absorption refrigeration bubble pump according to claim 4, characterized in that: The first spring limiter and the second spring limiter have the same structure, both being I-shaped structures with a cylindrical through hole in the middle for a lightweight round shaft to pass through.

9. A pressure-controlled lithium bromide absorption refrigeration bubble pump according to claim 1, characterized in that: The refrigerant inlet and the corresponding riser pipe interface are connected on the same side inside the receiver via an inner liner.

Images