Anti-freezing brazed plate heat exchanger

Abstract

The utility model relates to the technical field of brazed plate heat exchangers, in particular to an anti-freezing brazed plate heat exchanger which comprises a heat exchanger body and heat exchange plates, a cold water inlet is formed in the lower left portion of the front end of the heat exchanger body, the top end of the cold water inlet is communicated with a feeding sleeve, and a feeding box is arranged above the feeding sleeve. According to the anti-freezing brazed plate heat exchanger, through the arrangement of the impeller, the connecting shaft, the threaded clamping connector, the material distribution hollow ball, the material distribution short pipe, the movable connector, the feeding sleeve and the feeding box, the anti-freezing brazed plate heat exchanger can conveniently add an anti-freezing agent into cold water, so that the anti-freezing effect of the anti-freezing brazed plate heat exchanger is improved, and the anti-freezing effect of the anti-freezing brazed plate heat exchanger is improved. In the process of achieving the anti-freezing purpose, the anti-freezing agent is evenly added into cold water through the rotary material distributing structure, effective anti-freezing treatment is conducted in cooperation with heat exchange equipment, the uniformity of the anti-freezing agent added into the cold water is kept, and resource waste of a large number of anti-freezing agents is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of brazed plate heat exchangers, in particular to an anti-freezing brazed plate heat exchanger. Background Art

[0002] In the industrial field, brazed plate heat exchanger is an important heat exchange equipment with advantages such as high heat exchange efficiency, small size, and resistance to high temperature and high pressure environment. At the same time, when the brazed plate heat exchanger is used as an evaporator, considering the installation, maintenance and cost, most brazed plate heat exchangers can add antifreeze to prevent the water channel from freezing.

[0003] While the prior art provides anti-freeze protection for brazed plate heat exchangers by adding granular antifreeze, it is considered that in some cases, the granular antifreeze is added by a single-port direct introduction method. This adding method is prone to problems in actual operation such as difficulty in uniform addition of antifreeze and waste of a large amount of antifreeze resources due to the direct introduction. Therefore, an anti-freeze brazed plate heat exchanger is proposed to address the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide an antifreeze brazed plate heat exchanger to solve the problem that when the prior art proposed in the above background technology adds granular antifreeze to the brazed plate heat exchanger for antifreeze protection, the antifreeze is not easy to be added evenly and a large amount of antifreeze resources are easily wasted.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An anti-freezing brazed plate heat exchanger comprises a heat exchanger body and heat exchange plates, a cold water inlet is provided at the lower left front end of the heat exchanger body, the top end of the cold water inlet is connected to a feeding sleeve, a feeding box is provided above the feeding sleeve, an impeller is provided deep inside the cold water inlet, a connecting shaft is provided in the middle of the impeller, one end of the connecting shaft is fixedly connected to a threaded clamp, the end of the threaded clamp away from the connecting shaft is threadedly connected to a material distribution hollow ball, the outer surface of the material distribution hollow ball is connected to a material distribution short tube, and the top end of the material distribution hollow ball is fixedly connected to a movable interface.

[0007] Preferably, the lower right position of the front end of the heat exchanger body is connected to a hot water inlet, and the upper left and upper right positions of the front end of the heat exchanger body are respectively connected to a cold water outlet and a hot water outlet, and the outsides of the cold water outlet, hot water outlet, hot water inlet and cold water inlet are respectively fixedly connected with flanges.

[0008] Preferably, the heat exchanger body is composed of a plurality of the heat exchange plates in sequence from front to back.

[0009] Preferably, the coupling is rotatably installed on the inner side of the cold water inlet, the threaded clamping joint has a "T"-shaped structure, and the threaded clamping joint is arranged inside the injection sleeve.

[0010] Preferably, the discharge end of the feeding box is inserted into the interior of the movable interface, the feeding short tubes are distributed in a ring array structure along the center point of the feeding hollow ball, and the feeding hollow ball and the feeding short tubes are respectively arranged inside the feeding sleeve.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] In the utility model, the impeller, coupling, threaded clamp, hollow ball for material distribution, short tube for material distribution, movable interface, dosing sleeve and dosing box are arranged, so that the anti-freezing brazed plate heat exchanger can add antifreeze to cold water to achieve the purpose of antifreeze. Since the dosing box and the movable interface are movably connected, the heat exchange equipment can use the rotary dosing structure composed of the impeller, coupling, threaded clamp, hollow ball for material distribution, short tube for material distribution, movable interface, dosing sleeve and dosing box to evenly add antifreeze to the cold water, and cooperate with the heat exchange equipment to perform effective antifreeze treatment. In addition, compared with the previous single-port direct-through method of introducing antifreeze, the multi-port rotary dosing method can maintain the uniformity of adding antifreeze to the cold water. The rotary dosing structure driven by water flow can also stop the dosing operation after the fluid stops being fed in, and indirectly cooperates with the entire heat exchange equipment to achieve the purpose of auxiliary material control and prevent the waste of a large amount of antifreeze resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the dosing casing of the utility model;

[0015] Figure 3 It is a schematic diagram of the structure of the material-dividing hollow ball of the utility model.

[0016] In the figure: 1. Heat exchanger body; 2. Cold water inlet; 3. Impeller; 4. Coupling; 5. Threaded clamp; 6. Hollow ball for material distribution; 7. Short pipe for material distribution; 8. Movable interface; 9. Dosing sleeve; 10. Dosing box; 11. Hot water inlet; 12. Cold water outlet; 13. Hot water outlet; 14. Flange; 15. Heat exchange plate. DETAILED DESCRIPTION

[0017] 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 in 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.

[0018] See also Figure 1-3 , the utility model provides a technical solution:

[0019] An anti-freezing brazed plate heat exchanger comprises a heat exchanger body 1 and heat exchange plates 15. A cold water inlet 2 is provided at the lower left of the front end of the heat exchanger body 1. The top of the cold water inlet 2 is connected to a dosing sleeve 9. A dosing box 10 is provided above the dosing sleeve 9. An impeller 3 is provided deep inside the cold water inlet 2. A connecting shaft 4 is provided in the middle of the impeller 3. A threaded clamp 5 is fixedly connected to one end of the connecting shaft 4. A hollow ball 6 is threadedly connected to the end of the threaded clamp 5 away from the connecting shaft 4. A short pipe 7 is connected to the outer surface of the hollow ball 6. A movable interface 8 is fixedly connected to the top of the hollow ball 6.

[0020] like Figure 1 As shown, a hot water inlet 11 is connected to the lower right position of the front end of the heat exchanger body 1, and a cold water outlet 12 and a hot water outlet 13 are respectively connected to the upper left and upper right positions of the front end of the heat exchanger body 1, and flanges 14 are fixedly connected to the outsides of the cold water outlet 12, the hot water outlet 13, the hot water inlet 11 and the cold water inlet 2. By arranging flanges 14 at the inlet and outlet positions respectively, this structural arrangement will facilitate the entire heat exchange equipment to quickly connect the cold water pipeline and the hot water pipeline by flange fixing; the heat exchanger body 1 is composed of a plurality of heat exchange plates 15 from front to back, and when multiple heat exchange plates 15 are neatly stacked together, they will form a water channel space so that the entire heat exchanger can achieve normal operation by plate heat exchange.

[0021] like Figure 1 , Figure 2 and Figure 3As shown, the connecting shaft 4 is rotatably installed on the inner side of the cold water inlet 2, and the threaded clamp 5 is in a "T"-shaped structure. The threaded clamp 5 is arranged inside the dosing sleeve 9. When the hollow ball 6 for material distribution is installed, the threaded connection between the hollow ball 6 for material distribution and the threaded clamp 5 will enable the threaded clamp 5 to assist the hollow ball 6 for material distribution to quickly transfer to the connecting shaft 4; the discharge end of the dosing box 10 is inserted into the interior of the movable interface 8, and the short tube 7 for material distribution is distributed in a ring array structure along the center point of the hollow ball 6 for material distribution. The hollow ball 6 for material distribution and the short tube 7 for material distribution are respectively arranged inside the dosing sleeve 9. When the hollow ball 6 for material distribution rotates with the water flow, the antifreeze originally falling into the hollow ball 6 for material distribution will be brought out in multiple directions through the interior of multiple short tubes 7 for material distribution, so as to cooperate with the entire heat exchange equipment to achieve uniform feeding operation.

[0022] Working process: Before the heat exchange device in the utility model is used, the cold water inlet 2 and the hot water inlet 11 can be connected to the cold water supply pipeline and the hot water pipeline respectively, and the cold water outlet pipeline and the hot water pipeline can be connected to the cold water outlet 12 and the hot water outlet 13 respectively. When the anti-freezing brazed plate heat exchanger needs to be used as an evaporator, first, as the cold water and the hot water enter the interior of the heat exchanger body 1 through the cold water inlet 2 and the hot water inlet 11 in turn, when the cold water is effectively anti-freezing treated and the hot water respectively enters the interior of the water channel composed of a plurality of heat exchange plates 15 to flow, the heat exchange device will realize heat exchange through the plurality of plates, and finally the cold water and the hot water after heat exchange will flow out from the cold water outlet 12 and the hot water outlet 13 respectively, and the heat exchange is achieved with the whole heat exchange device. The purpose of heat exchange is to insert the discharge end of the dosing box 10 into the movable interface 8 before using the entire heat exchange equipment, so that the two can be movably connected, and after the connection between the dosing box 10 and the dosing sleeve 9 is effectively sealed, the antifreeze can be added. When cold water enters the heat exchanger body 1 through the cold water inlet 2, the impeller 3 impacted by the water flow will pass through the connecting shaft 4 and the threaded clamp 5, and the distribution hollow ball 6 and the movable interface 8 to achieve relative rotation. In this way, the antifreeze falling from the discharge end of the dosing box 10 into the distribution hollow ball 6 can be brought out of the dosing sleeve 9 through the interior of multiple distribution short tubes 7 in a multi-directional rotation manner, and then evenly fall into the cold water, so as to cooperate with the entire heat exchange equipment to achieve the purpose of evenly dosing the antifreeze.

[0023] 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 anti-freezing brazed plate heat exchanger, comprising a heat exchanger body (1) and heat exchange plates (15), characterized in that: A cold water inlet (2) is provided at the lower left of the front end of the heat exchanger body (1), the top of the cold water inlet (2) is connected to a dosing sleeve (9), a dosing box (10) is provided above the dosing sleeve (9), an impeller (3) is provided deep inside the cold water inlet (2), a connecting shaft (4) is provided in the middle of the impeller (3), one end of the connecting shaft (4) is fixedly connected to a threaded clamping joint (5), the end of the threaded clamping joint (5) away from the connecting shaft (4) is threadedly connected to a material distribution hollow ball (6), the outer surface of the material distribution hollow ball (6) is connected to a material distribution short pipe (7), and the top of the material distribution hollow ball (6) is fixedly connected to a movable interface (8).

2. The anti-freezing brazed plate heat exchanger according to claim 1, characterized in that: The lower right position of the front end of the heat exchanger body (1) is connected to a hot water inlet (11), and the upper left and upper right positions of the front end of the heat exchanger body (1) are respectively connected to a cold water outlet (12) and a hot water outlet (13), and the outsides of the cold water outlet (12), the hot water outlet (13), the hot water inlet (11) and the cold water inlet (2) are respectively fixedly connected with flanges (14).

3. The anti-freezing brazed plate heat exchanger according to claim 1, characterized in that: The heat exchanger body (1) is composed of a plurality of heat exchange plates (15) assembled in sequence from front to back.

4. The anti-freezing brazed plate heat exchanger according to claim 1, characterized in that: The connecting shaft (4) is rotatably mounted on the inner side of the cold water inlet (2); the threaded clamping joint (5) is arranged in a "T"-shaped structure; and the threaded clamping joint (5) is arranged inside the dosing sleeve (9).

5. The anti-freezing brazed plate heat exchanger according to claim 1, characterized in that: The discharge end of the dosing box (10) is inserted into the interior of the movable interface (8), and the short distribution tubes (7) are distributed in a ring array structure along the center point of the hollow distribution ball (6). The hollow distribution ball (6) and the short distribution tubes (7) are respectively arranged inside the dosing sleeve (9).

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