An evaporator capable of adaptively adjusting refrigerant flow according to water temperature

Abstract

The present invention relates to the technical field of evaporators with adjustable refrigerant flow, and discloses an evaporator that can adjust the refrigerant flow adaptively according to water temperature, comprising a water tank, a box body fixedly mounted on the top of the water tank and filled with refrigerant, an evaporator fixedly mounted inside the water tank, and an adjusting mechanism with one side connected to the top of the evaporator and the middle fixedly sleeved inside the water tank. The evaporator that can adjust the refrigerant flow adaptively according to water temperature can change the magnitude of the current flowing into the current amplifier according to the change of the temperature of the heat source inside the water inlet pipe by arranging a positive temperature coefficient thermistor on the mounting sleeve, and then the iron core generates a magnetic field that repels the permanent magnet while the wire is energized through the current amplifier, pulling the moving rod and the sealing block to move, and can control the displacement of the sealing block while changing the magnitude of the force between the permanent magnet and the iron core through the magnitude of the current, thereby controlling the refrigerant flow into the box body.

Description

Technical Field

[0001] The invention relates to the technical field of evaporators with adjustable refrigerant flow, and in particular to an evaporator capable of adaptively adjusting the refrigerant flow according to water temperature. Background Art

[0002] The air compressor station is one of the main energy-consuming stations in the shipyard. A large amount of heat energy is generated during its operation. Necessary measures must be taken to eliminate this energy to avoid affecting the normal operation of the unit. The water source heat pump is one of the emerging environmental energy absorption and utilization technologies. It is based on the reverse Carroll cycle principle and relies on a small amount of electrical energy input to achieve the purpose of converting low-grade energy into high-grade energy.

[0003] When the water source heat pump is working: when the heat source passes through the surface of the evaporator, the heat of the heat source is absorbed by the refrigerant in the evaporator, the liquid refrigerant is evaporated by the heat and becomes a gaseous refrigerant, and then enters the compressor, which compresses it to become a high-temperature gaseous refrigerant. The high-temperature gaseous refrigerant is transported to the inside of the condenser to heat the domestic water. After the high-temperature gaseous refrigerant becomes a liquid refrigerant, it is returned for use. Some existing evaporators cannot adjust the flow rate of the refrigerant flowing into the evaporator. Under extreme working conditions, the evaporation degree of the refrigerant in the evaporator is not perfect due to the low temperature, and it will enter the compressor in a gas-liquid two-phase state, affecting the efficiency of the compressor and reducing the heating capacity. Summary of the invention

[0004] The present invention provides an evaporator capable of adaptively adjusting the refrigerant flow rate according to water temperature, which has the advantages of adjustable refrigerant flow rate and high compressor working efficiency, and solves the problems raised by the background technology.

[0005] The present invention provides the following technical solution: an evaporator capable of adaptively adjusting the flow rate of refrigerant according to water temperature, comprising a water tank, a box body fixedly installed on the top of the water tank and containing refrigerant, an evaporator fixedly installed inside the water tank, and an adjusting mechanism having one side connected to the top of the evaporator and a middle fixedly sleeved inside the water tank, the bottom of one side of the water tank being connected to a water inlet pipe having a mounting sleeve fixedly sleeved on the top, and the top of the other side of the water tank being connected to a water outlet pipe, the bottom end of the evaporator extending out of the water tank being connected to a manifold, one side of the manifold being connected to a first conduit having one end connected to a compressor, the bottom of one side of the box body being connected to a second water pipe having one end provided with an electromagnetic control valve, and one end of the second water pipe being connected to one side of the top of the adjusting mechanism, the top of the water tank being fixedly connected to a fixing plate located on one side of the adjusting mechanism, and a control mechanism located above the adjusting mechanism being fixedly installed on the inner side of the fixing plate.

[0006] Preferably, a positive temperature coefficient thermistor is provided at the bottom of the mounting sleeve.

[0007] Preferably, the regulating mechanism includes a bypass pipe fixedly sleeved inside the water tank, and one side of the bypass pipe is connected to the second water pipe, the top of the bypass pipe is threadedly sleeved with a sealing cover, and the top of the inner cavity of the bypass pipe is movably sleeved with a sealing sleeve in contact with the sealing cover, the sealing cover and the interior of the sealing sleeve are movably sleeved with a moving rod, and the bottom end of the moving rod extending out of the sealing sleeve is fixedly sleeved with a sealing block, the top of the moving rod is threadedly sleeved with a nut, and the bottom of the nut is transmission connected to the top of the sealing sleeve through a spring sleeved on the moving rod.

[0008] Preferably, both sides of the bottom end of the bypass pipe are connected with symmetrically distributed and inclined flow guide pipes, and the bypass pipe is connected with the top end of the box body through the flow guide pipes.

[0009] Preferably, the side surface of the sealing block is configured as a conical surface, and a sealing ring is clamped on the top end of the sealing block.

[0010] Preferably, a permanent magnet is fixedly mounted on the top of the moving rod, and the polarities of the permanent magnet are distributed at both ends.

[0011] Preferably, the control mechanism includes an iron core fixedly mounted on the inner side of a fixed plate and a current amplifier fixedly mounted on the top of the fixed plate and electrically connected to a positive temperature coefficient thermistor, and a wire electrically connected to one side of the current amplifier is wound around the outer wall of the iron core.

[0012] The present invention has the following beneficial effects:

[0013] 1. The evaporator capable of adaptively adjusting the refrigerant flow rate according to the water temperature can change the magnitude of the current flowing into the current amplifier according to the change of the temperature of the heat source inside the water inlet pipe by arranging a positive temperature coefficient thermistor on the mounting sleeve, so that the current amplifier can make the wire energized and the iron core generate a magnetic field to repel the permanent magnet, so as to pull the moving rod and the sealing block to move, and the displacement of the sealing block can be controlled by changing the magnitude of the force between the permanent magnet and the iron core by the magnitude of the current, thereby controlling the refrigerant flow into the box body.

[0014] 2. The evaporator which can adaptively adjust the refrigerant flow rate according to the water temperature can make the amount of refrigerant flowing from the inside of the bypass pipe into the inside of the box body more uniform by arranging a guide pipe on the bypass pipe. The permanent magnet can be free from stress when the water temperature inside the water inlet pipe is high by means of a spring. The sealing block can automatically reset under the action of the elastic force, thereby changing the flow rate of the refrigerant flowing into the bypass pipe.

[0015] 3. The evaporator which adaptively adjusts the refrigerant flow rate according to the water temperature can change the force required for the sealing block to move by adjusting the position of the nut, thereby changing the displacement of the sealing block under the same heat source conditions, making it convenient to adjust the flow rate of the refrigerant flowing into the bypass pipe according to the change of the heat source temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 is a schematic diagram of the adjustment mechanism of the present invention;

[0018] Figure 3 It is a side schematic diagram of the bypass pipe of the present invention;

[0019] Figure 4 It is a schematic diagram of the control mechanism of the present invention.

[0020] In the figure: 1. water tank; 2. box body; 3. evaporator; 4. regulating mechanism; 41. bypass pipe; 42. sealing cover; 43. sealing sleeve; 44. moving rod; 45. sealing block; 46. nut; 47. spring; 5. mounting sleeve; 6. water inlet pipe; 7. water outlet pipe; 8. conduit; 9. first conduit; 10. solenoid control valve; 11. second water pipe; 12. fixing plate; 13. control mechanism; 131. iron core; 132. current amplifier; 133. wire. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] The accompanying drawings in the embodiments of the present invention: different types of section lines in the drawings are not marked according to national standards, nor do they impose requirements on the materials of the components. Instead, they are used to distinguish the cross-sectional views of the components in the drawings.

[0023] like Figure 1As shown, an evaporator that adaptively adjusts the refrigerant flow rate according to water temperature comprises a water tank 1, a box body 2 fixedly mounted on the top of the water tank 1 and filled with refrigerant, an evaporator 3 fixedly mounted inside the water tank 1, and an adjusting mechanism 4 whose one side is connected to the top of the evaporator 3 and whose middle part is fixedly sleeved inside the water tank 1, the bottom of one side of the water tank 1 is connected with a water inlet pipe 6 with a mounting sleeve 5 fixedly sleeved on the top, and the top of the other side of the water tank 1 is connected with a water outlet pipe 7, the bottom end of the evaporator 3 extending out of the water tank 1 is connected with a manifold 8, one side of the manifold 8 is connected with a first conduit 9 connected with a compressor, the bottom of one side of the box body 2 is connected with a second water pipe 11 with an electromagnetic control valve 10 provided on one end, and one end of the second water pipe 11 is connected with one side of the top of the adjusting mechanism 4, the top of the water tank 1 is fixedly connected with a fixing plate 12 located on one side of the adjusting mechanism 4, and the inner side of the fixing plate 12 is fixedly mounted with a control mechanism 13 located above the adjusting mechanism 4.

[0024] A positive temperature coefficient thermistor is provided at the bottom of the mounting sleeve 5. The positive temperature coefficient thermistor can change the internal resistance value according to the temperature of the heat source, thereby changing the current flowing into the current amplifier 132, so that the magnetic field strength generated by the iron core 131 changes with the change of the temperature of the heat source, which is convenient for adjusting the refrigerant flow into the box body 2;

[0025] like Figure 2 As shown, the regulating mechanism 4 includes a bypass pipe 41 fixedly sleeved inside the water tank 1, and one side of the bypass pipe 41 is connected to the second water pipe 11, the top of the bypass pipe 41 is threadedly sleeved with a sealing cover 42, and the top of the inner cavity of the bypass pipe 41 is movably sleeved with a sealing sleeve 43 in contact with the sealing cover 42, the sealing cover 42 and the sealing sleeve 43 are movably sleeved with a moving rod 44 inside, and the bottom end of the moving rod 44 extending out of the sealing sleeve 43 is fixedly sleeved with a sealing block 45, the top of the moving rod 44 is threadedly sleeved with a nut 46, and the bottom of the nut 46 is transmission-connected to the top of the sealing sleeve 43 through a spring 47 sleeved on the moving rod 44;

[0026] like Figure 3 As shown, the two sides of the bottom end of the bypass pipe 41 are connected with symmetrically distributed and inclined flow guide pipes, and the bypass pipe 41 is connected with the top of the box body 2 through the flow guide pipes;

[0027] like Figure 2 As shown, the side surface of the sealing block 45 is set as a conical surface, and the top of the sealing block 45 is clamped with a sealing ring, and the sealing ring is used to enhance the sealing between the sealing block 45 and the inner cavity of the bypass pipe 41 to prevent refrigerant leakage. The sealing block 45 can change the space gap between the second water pipe 11 and the bypass pipe 41, thereby changing the flow rate of the refrigerant flowing from the second water pipe 11 into the bypass pipe 41;

[0028] A permanent magnet is fixedly mounted on the top of the moving rod 44, and the polarities of the permanent magnet are distributed at both ends;

[0029] like Figure 4 As shown, the control mechanism 13 includes an iron core 131 fixedly mounted on the inner side of the fixed plate 12 and a current amplifier 132 fixedly mounted on the top of the fixed plate 12 and electrically connected to the positive temperature coefficient thermistor, and a wire 133 electrically connected to one side of the current amplifier 132 is wound around the outer wall of the iron core 131. The current amplifier 132 enables the iron core 131 to generate a magnetic field opposite to the magnetic field of the permanent magnet when the wire 133 is energized, thereby generating a repulsive interaction force between the iron core 131 and the permanent magnet, making it convenient to adjust the displacement of the moving rod 44 and the sealing block 45 while adjusting the refrigerant flow rate flowing into the box body 2.

[0030] When adjusting the refrigerant flow, the positive temperature coefficient thermistor on the mounting sleeve 5 can change its resistance according to the change of water temperature, thereby changing the current flowing into the current amplifier 132. When the temperature of the heat source flowing into the water inlet pipe 6 is low, the positive temperature coefficient thermistor is affected by the temperature, the resistance decreases, and the current flowing into the current amplifier 132 increases. The current inside the current amplifier 132 flows into the iron core 131 after amplification, and at the same time, the iron core 131 generates a magnetic field opposite to that of the permanent magnet. The permanent magnet moves downward under the force of the magnetic field of the control mechanism 13, and the permanent magnet The sealing block 45 is driven downward by the moving rod 44 to reduce the gap between the moving rod 44 and the bypass pipe 41, thereby changing the refrigerant flow rate from the second water pipe 11 into the bypass pipe 41, and then controlling the refrigerant flow rate flowing into the box body 2 through the bypass pipe 41. When the temperature of the heat source flowing into the water inlet pipe 6 is high, the positive temperature coefficient thermistor is affected by the temperature, the resistance increases, and the current decreases. At this time, the interaction force between the iron core 131 and the permanent magnet is small, and the sealing block 45 cannot be moved, so the refrigerant flow rate flowing into the box body 2 will not change.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. At the same time, in the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the equipment or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An evaporator capable of adaptively adjusting the flow rate of a refrigerant according to water temperature, comprising a water tank (1), a box body (2) fixedly mounted on the top of the water tank (1) and containing a refrigerant, an evaporator (3) fixedly mounted inside the water tank (1), and an adjusting mechanism (4) having one side connected to the top of the evaporator (3) and a middle portion fixedly sleeved inside the water tank (1), characterized in that: The bottom of one side of the water tank (1) is connected to a water inlet pipe (6) with a mounting sleeve (5) fixedly sleeved on the top, and the top of the other side of the water tank (1) is connected to a water outlet pipe (7); the bottom end of the evaporator (3) extending out of the water tank (1) is connected to a manifold (8); one side of the manifold (8) is connected to a first conduit (9) with one end connected to the compressor; the bottom of one side of the box body (2) is connected to a second water pipe (11) with an electromagnetic control valve (10) provided on one end, and one end of the second water pipe (11) is connected to one side of the top of the regulating mechanism (4); the top of the water tank (1) is fixedly connected to a fixing plate (12) located on one side of the regulating mechanism (4), and a control mechanism (13) located above the regulating mechanism (4) is fixedly installed on the inner side of the fixing plate (12); A positive temperature coefficient thermistor is arranged at the bottom of the mounting sleeve (5); The regulating mechanism (4) comprises a bypass pipe (41) fixedly sleeved inside the water tank (1), and one side of the bypass pipe (41) is connected to the second water pipe (11); the top of the bypass pipe (41) is threadedly sleeved with a sealing cover (42), and the top of the inner cavity of the bypass pipe (41) is movably sleeved with a sealing sleeve (43) in contact with the sealing cover (42); the sealing cover (42) and the sealing sleeve (43) are movably sleeved with a moving rod (44) inside, and the bottom end of the moving rod (44) extending outside the sealing sleeve (43) is fixedly sleeved with a sealing block (45); the top of the moving rod (44) is threadedly sleeved with a nut (46), and the bottom of the nut (46) is transmission-connected to the top of the sealing sleeve (43) via a spring (47) sleeved on the moving rod (44); A permanent magnet is fixedly mounted on the top of the moving rod (44), and the polarities of the permanent magnet are distributed at both ends; the control mechanism (13) comprises an iron core (131) fixedly mounted on the inner side of the fixed plate (12) and a current amplifier (132) fixedly mounted on the top of the fixed plate (12) and electrically connected to a positive temperature coefficient thermistor, and a wire (133) electrically connected to one side of the current amplifier (132) is wound around the outer wall of the iron core (131).

2. The evaporator capable of adaptively adjusting the refrigerant flow rate according to water temperature according to claim 1, characterized in that: Both sides of the bottom end of the bypass pipe (41) are connected to symmetrically distributed and inclined flow guide pipes, and the bypass pipe (41) is connected to the top end of the box body (2) through the flow guide pipes.

3. The evaporator capable of adaptively adjusting the refrigerant flow rate according to water temperature according to claim 1, characterized in that: The side surface of the sealing block (45) is arranged as a conical surface, and a sealing ring is clamped at the top end of the sealing block (45).

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