Heat exchanger

Abstract

The utility model relates to a heat exchanger which is internally provided with a heat exchange liquid flow path and an anti-freezing liquid flow path. The heat exchanger is vertically installed in the using process, and the same-side bottom-in and bottom-out connecting mode is adopted. An inlet of the heat exchange liquid flow path and an inlet of the anti-freezing liquid flow path are arranged on the end side of one vertical side face of the heat exchanger, and an outlet of the heat exchange liquid flow path is arranged on the other vertical side face, opposite to the one vertical side face, of the heat exchanger and faces the inlet of the heat exchange liquid flow path. An outlet of the anti-freezing solution flow path is provided so as to face an inlet of the anti-freezing solution flow path. The heat exchange liquid flow path and the anti-freezing liquid flow path are independent of each other and do not communicate with each other.

Description

Technical Field

[0001] The utility model relates to a heat exchanger, in particular to a heat exchanger with an antifreeze function. Background Art

[0002] The heat exchanger in the prior art is usually a roughly rectangular plate heat exchanger, including two main surfaces and four side surfaces, the two main surfaces include the front surface and the back surface, and the four side surfaces include the upper side surface, the lower side surface, the left side surface, and the right side surface. Generally speaking, the heat exchanger is installed vertically, has a heat exchange liquid flow path inlet and a heat exchange liquid flow path outlet, and the heat exchanger usually has the following connection methods.

[0003] like Figure 1 As shown, the heat exchanger adopts the bottom-in and bottom-out connection method on the same side. The heat exchange liquid flow path inlet is set on the lower side of the left side of the heat exchanger, and the heat exchange liquid flow path outlet is set on the lower side of the right side. The advantage of this method is that it saves space and does not waste too much heat exchanger pipes, saves costs, is simple and convenient to install, and is convenient for exhaust and drainage in the later use. If the heat exchanger is more than 1 meter long, a partition can be installed inside the heat exchanger to increase water circulation and ensure the heating effect. It is suitable for working conditions with large-scale heat exchange requirements, but it is not recommended for small heat exchangers. At present, most heat exchangers that adopt this installation are steel heat exchangers.

[0004] like Figure 2 As shown, the heat exchanger adopts the bottom-in and bottom-out connection method on the same side. The heat exchange liquid flow path inlet and heat exchange liquid flow path outlet are respectively set on the left and right sides of the lower side of the heat exchanger. The advantage of this method is that it saves space, is convenient for later maintenance, and is also convenient for later exhaust and drainage. If the heat exchanger is more than 1 meter, it is necessary to install a partition inside the heat exchanger to increase water circulation and ensure the heat exchange effect. This connection method is suitable for large-scale heat exchange, but it is not recommended for small-scale heat exchange. Utility Model Content

[0005] Problems to be solved by the utility model

[0006] The two different connection methods of heat exchangers have different characteristics and are applicable to different working conditions. If the heat exchanger is used for heat exchange in severe cold and cold areas, the temperature after heat exchange may be below 0°C or even lower, which may cause the heat exchanger to freeze. If antifreeze is not performed, a thick layer of ice will form on the surface of the heat exchanger. As a result, it not only affects the appearance, but also increases the wind resistance of the heat exchanger, reducing the heat exchange capacity of the heat exchanger.

[0007] The utility model is completed in view of the above actual situation, and its main purpose is to provide a heat exchanger with antifreeze function and high heat exchange efficiency and antifreeze efficiency according to the characteristics of heat exchangers with different installation forms.

[0008] Solutions for solving problems

[0009] A heat exchanger, characterized in that it has a heat exchange liquid flow path and an antifreeze liquid flow path inside, the heat exchanger is installed upright when in use, and adopts a bottom-in and bottom-out connection method on the same side, the inlet of the heat exchange liquid flow path and the inlet of the antifreeze liquid flow path are arranged at the end side of one vertical side of the heat exchanger, and the outlet of the heat exchange liquid flow path is arranged opposite to the inlet of the heat exchange liquid flow path on the other vertical side of the heat exchanger opposite to the one vertical side, and the outlet of the antifreeze liquid flow path is arranged opposite to the inlet of the antifreeze liquid flow path, the heat exchanger also has: an antifreeze liquid circuit, in which antifreeze liquid circulates; and an antifreeze heater, which is used to The antifreeze liquid is heated to increase the temperature of the antifreeze liquid, wherein the antifreeze liquid circuit includes: the antifreeze liquid flow path, the heat exchanger is defrosted when the antifreeze liquid flows through the antifreeze liquid flow path, so that the temperature of the antifreeze liquid is reduced; an antifreeze liquid inlet pipeline, which connects the inlet of the antifreeze liquid flow path with the outlet of the antifreeze heater, and is used to make the antifreeze liquid with increased temperature flow to the heat exchanger; and an antifreeze liquid outlet pipeline, which connects the outlet of the antifreeze liquid flow path with the inlet of the antifreeze heater, and is used to make the antifreeze liquid with reduced temperature flow to the antifreeze heater, and the heat exchange liquid flow path and the antifreeze liquid flow path are independent of each other and do not communicate with each other.

[0010] The heat exchanger is characterized in that it comprises: a heat exchange fluid circuit in which the heat exchange fluid circulates; and a heat collector in which the heat exchange fluid exchanges heat with a heat medium, thereby reducing the temperature of the heat exchange fluid, wherein the heat exchange fluid circuit comprises: the heat exchange fluid flow path, through which the heat exchange fluid exchanges heat with the outside world when flowing, thereby increasing the temperature of the heat exchange fluid; a heat exchange fluid inlet pipeline, which connects the inlet of the heat exchange fluid flow path with the outlet of the heat collector and is used to allow the heat exchange fluid with a reduced temperature to flow to the heat exchanger; and a heat exchange fluid outlet pipeline, which connects the outlet of the heat exchange fluid flow path with the inlet of the heat collector and is used to allow the heat exchange fluid with a raised temperature to flow to the heat collector.

[0011] The heat exchanger is characterized in that the inlet of the heat exchange liquid flow path is arranged adjacent to the inlet of the antifreeze liquid flow path.

[0012] A heat exchanger, characterized in that it has a heat exchange liquid flow path and an antifreeze liquid flow path inside. The heat exchanger is installed vertically when in use, and adopts a bottom-in and bottom-out connection method on the same side. The inlet and outlet of the antifreeze liquid flow path are arranged on the bottom side of the heat exchanger. The heat exchanger also has: an antifreeze liquid circuit, in which the antifreeze liquid circulates; and an antifreeze heater, which is used to heat the antifreeze liquid to increase the temperature of the antifreeze liquid, wherein the antifreeze liquid circuit includes: the antifreeze liquid flow path, the When the antifreeze liquid flows through the antifreeze liquid flow path, the heat exchanger is defrosted, thereby reducing the temperature of the antifreeze liquid; an antifreeze liquid inlet pipeline, which connects the inlet of the antifreeze liquid flow path with the outlet of the antifreeze heater, and is used to allow the antifreeze liquid with increased temperature to flow to the heat exchanger; and an antifreeze liquid outlet pipeline, which connects the outlet of the antifreeze liquid flow path with the inlet of the antifreeze heater, and is used to allow the antifreeze liquid with reduced temperature to flow to the antifreeze heater. The heat exchange liquid flow path and the antifreeze liquid flow path are independent of each other and are not connected to each other.

[0013] The heat exchanger is characterized in that it comprises: a heat exchange fluid circuit in which the heat exchange fluid circulates; and a heat collector in which the heat exchange fluid exchanges heat with a heat medium, thereby reducing the temperature of the heat exchange fluid, wherein the heat exchange fluid circuit comprises: the heat exchange fluid flow path, through which the heat exchange fluid exchanges heat with the outside world when flowing, thereby increasing the temperature of the heat exchange fluid; a heat exchange fluid inlet pipeline, which connects the inlet of the heat exchange fluid flow path with the outlet of the heat collector and is used to allow the heat exchange fluid with a reduced temperature to flow to the heat exchanger; and a heat exchange fluid outlet pipeline, which connects the outlet of the heat exchange fluid flow path with the inlet of the heat collector and is used to allow the heat exchange fluid with a raised temperature to flow to the heat collector.

[0014] The heat exchanger is characterized in that the inlet of the heat exchange liquid flow path is arranged adjacent to the inlet of the antifreeze liquid flow path.

[0015] The heat exchanger is characterized in that the inlet of the heat exchange fluid flow path and the outlet of the heat exchange fluid flow path are arranged on a vertical surface of the heat exchanger.

[0016] The heat exchanger is characterized in that the inlet and the outlet of the heat exchange fluid flow path are arranged adjacent to each other.

[0017] The heat exchanger is characterized in that the inlet of the heat exchange fluid flow path is arranged at a lower part of a vertical side surface of the heat exchanger, and the outlet of the heat exchange fluid flow path is arranged on another vertical side surface of the heat exchanger opposite to the one vertical side surface, facing the inlet of the heat exchange fluid flow path.

[0018] The heat exchanger is characterized in that the inlet and the outlet of the heat exchange fluid flow path are arranged on the bottom side.

[0019] Effect of utility model

[0020] According to the heat exchanger, when heat is exchanged in a low-temperature environment, freezing protection can be performed efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a heat exchanger in the prior art.

[0022] Figure 2 It is a structural schematic diagram of a heat exchanger in the prior art.

[0023] Figure 3 1 is a schematic diagram showing the structure of the heat exchanger of the first embodiment.

[0024] Figure 4 2 is a schematic structural diagram showing a heat exchanger according to a second embodiment.

[0025] Figure 5 1 is a schematic structural diagram showing a heat exchanger according to a third embodiment.

[0026] Figure 6 1 is a schematic structural diagram showing a heat exchanger according to a fourth embodiment.

[0027] Figure 7 1 is a schematic structural diagram showing a heat exchanger according to a fifth embodiment.

[0028] Figure 8 1 is a schematic structural diagram showing a heat exchanger according to a sixth embodiment. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] <First Embodiment>

[0031] In this embodiment, the heat exchanger 1 has a heat exchange liquid flow path and an antifreeze liquid flow path (neither of which is shown in the figure), and the heat exchange liquid flow path and the antifreeze liquid flow path are independent of each other and do not communicate with each other. Figure 3As shown, a heat exchange liquid flow path inlet 101 is provided at the upper part of one vertical side surface of the heat exchanger 1, an antifreeze liquid flow path inlet 103 is provided at the lower part, a heat exchange liquid flow path outlet 102 is provided at the upper part of another vertical side surface opposite to the vertical side surface, and an antifreeze liquid flow path outlet 104 is provided at the lower part. That is, the heat exchange liquid flow path inlet 101 and the heat exchange liquid flow path outlet 102 adopt the upper-in-and-up-out method on the same side, and the antifreeze liquid flow path inlet 103 and the antifreeze liquid flow path outlet 104 adopt the lower-in-and-down method on the same side. However, it is also possible that the antifreeze liquid flow path inlet 103 is provided at the upper part of one vertical side surface of the heat exchanger 1, the heat exchange liquid flow path inlet 101 is provided at the lower part, the antifreeze liquid flow path outlet 104 is provided at the upper part of another vertical side surface opposite to the vertical side surface, and the heat exchange liquid flow path outlet 102 is provided at the lower part. Preferably, the heat exchange liquid flow path inlet 101 and the heat exchange liquid flow path outlet 102 are arranged opposite to each other, and the antifreeze liquid flow path inlet 103 and the antifreeze liquid flow path outlet 104 are arranged opposite to each other.

[0032] The heat exchange fluid flows into the heat exchange fluid flow path of the heat exchanger 1 from the heat exchange fluid flow path inlet 101 and flows out from the heat exchange fluid flow path outlet 102. The heat exchange fluid flow path outlet 102 is connected to the heat exchange fluid inlet of the heat exchanger (not shown) via the heat exchange fluid outlet pipe 12. The heat exchange fluid flow path inlet 101 is connected to the heat exchange fluid outlet of the heat exchanger via the heat exchange fluid inlet pipe 11.

[0033] A balancing angle valve (not shown) is provided in the heat exchange liquid outlet pipeline 12 to facilitate the adjustment of the flow rate of the heat exchange liquid and ensure good heat exchange.

[0034] When heat exchange is performed, the heat exchange liquid circuit is kept in a circulation state. Specifically, the heat exchange liquid exchanges heat with the outside world in the heat exchanger 1, so that the temperature of the heat exchange liquid increases. The heat exchange liquid with increased temperature flows out from the heat exchange liquid flow path outlet 102 of the heat exchanger 1, flows to the heat exchanger through the heat exchange liquid outlet pipeline 12, and exchanges heat with the heat medium in the heat exchanger, so that the temperature of the heat exchange liquid decreases. The heat exchange liquid with reduced temperature flows out of the heat exchanger, and flows to the heat exchanger 1 through the heat exchange liquid inlet pipeline 11, and flows into the heat exchanger 1 from the heat exchange liquid flow path inlet 101. As a result, the heat exchange liquid circulates in the heat exchange liquid circuit composed of the heat exchange liquid flow path in the heat exchanger 1, the heat exchange liquid outlet pipeline 12, the heat exchanger, and the heat exchange liquid inlet pipeline 11, so as to realize heat exchange from the outside world and transfer heat to the heat medium in the heat exchanger.

[0035] On the other hand, the antifreeze liquid flows into the antifreeze liquid flow path of the heat exchanger 1 from the antifreeze liquid flow path inlet 103 and flows out from the antifreeze liquid flow path outlet 104. The antifreeze liquid flow path inlet 103 is connected to the antifreeze liquid outlet of the antifreeze heater (not shown) via the antifreeze liquid inlet pipe 13. The antifreeze liquid flow path outlet 104 is connected to the antifreeze liquid inlet of the antifreeze heater via the antifreeze liquid outlet pipe 14.

[0036] A balancing angle valve (not shown) is provided in the antifreeze outlet pipeline 14 to facilitate the adjustment of the flow of the antifreeze to ensure a good antifreeze effect.

[0037] When antifreeze is performed, the antifreeze liquid circuit is kept in a circulating state. Specifically, the antifreeze liquid flows through the antifreeze liquid flow path to antifreeze the heat exchanger 1, so that the temperature of the antifreeze liquid is reduced. The antifreeze liquid flow path with a reduced temperature flows out from the antifreeze liquid flow path outlet 104 of the heat exchanger 1, flows to the antifreeze heater via the antifreeze liquid outlet pipeline 14, and is heated in the antifreeze heater, so that the temperature of the antifreeze liquid increases. The antifreeze liquid with a raised temperature flows out from the antifreeze heater, and flows to the heat exchanger 1 via the antifreeze liquid inlet pipeline 13, and flows into the heat exchanger 1 from the antifreeze liquid flow path inlet 103. As a result, the antifreeze liquid circulates in the antifreeze liquid circuit composed of the antifreeze liquid flow path in the heat exchanger 1, the antifreeze liquid outlet pipeline 14, the antifreeze heater, and the antifreeze liquid inlet pipeline 13, so as to achieve antifreeze of the heat exchanger 1.

[0038] Valves (not shown) may also be provided on the heat exchange liquid inlet pipeline 11, the heat exchange liquid outlet pipeline 12, the antifreeze liquid inlet pipeline 13, and the antifreeze liquid outlet pipeline 14, and the valves may be controlled to open the heat exchange liquid circuit and close the antifreeze liquid circuit to perform heat exchange, and to open the antifreeze liquid circuit and close the heat exchange liquid circuit to perform antifreeze. Alternatively, the valves may be controlled to open both the heat exchange liquid circuit and the antifreeze liquid circuit to perform heat exchange and antifreeze simultaneously.

[0039] When the heat exchanger adopts such a connection method of upper inlet and upper outlet on the same side and lower inlet and lower outlet on the same side, the installation is simple and convenient, and it is also convenient to exhaust and drain in the later use. The antifreeze circuit is set in the heat exchanger to prevent the heat exchanger from freezing when exchanging heat in a low temperature environment. The antifreeze liquid flow path inlet is arranged adjacent to the heat exchange liquid flow path inlet, and the heat exchange liquid flow path inlet that is easy to freeze can be antifreezed by the high-temperature antifreeze liquid at the antifreeze liquid flow path inlet, thereby reducing the antifreeze time and improving the antifreeze efficiency. Since heat exchange and antifreeze can be performed at the same time, it is possible to avoid the situation where heat exchange is stopped due to antifreeze, thereby improving the heat exchange efficiency of the heat exchanger.

[0040] <Second Embodiment>

[0041] In this embodiment, the arrangement, heat exchange, and antifreeze of the heat exchange liquid circuit and the antifreeze liquid circuit are the same as those of the first embodiment, and will not be described again here. Figure 4As shown, a heat exchange liquid flow path inlet 101 and an antifreeze liquid flow path inlet 103 are adjacently arranged at the lower part of one vertical side surface of the heat exchanger 1, and a heat exchange liquid flow path outlet 102 and an antifreeze liquid flow path outlet 104 are adjacently arranged at the lower part of another vertical side surface opposite thereto. There is no particular limitation on the upper and lower positions of the heat exchange liquid flow path inlet 101 and the antifreeze liquid flow path inlet 103, and the upper and lower positions of the heat exchange liquid flow path outlet 102 and the antifreeze liquid flow path outlet 104. That is, the heat exchange liquid flow path inlet 101 and the heat exchange liquid flow path outlet 102, and the antifreeze liquid flow path inlet 103 and the antifreeze liquid flow path outlet 104 respectively adopt the same side bottom-in and bottom-out method.

[0042] When the heat exchanger adopts the connection method of lower inlet and lower outlet on the same side, space is saved and too much heat exchanger pipe material will not be wasted, which saves costs, is simple and convenient to install, and is also convenient for exhaust and drainage in the later use. An antifreeze circuit is set in the heat exchanger to prevent the heat exchanger from freezing when exchanging heat in a low temperature environment. The antifreeze liquid flow path inlet is set adjacent to the heat exchange liquid flow path inlet, and the heat exchange liquid flow path inlet that is easy to freeze can be antifreezed by the antifreeze liquid with a high temperature at the antifreeze liquid flow path inlet, thereby reducing the antifreeze time and improving the antifreeze efficiency. Since heat exchange and antifreeze can be performed at the same time, it is possible to avoid the situation where heat exchange is stopped due to antifreeze, thereby improving the heat exchange efficiency of the heat exchanger.

[0043] <Third Embodiment>

[0044] In this embodiment, the arrangement, heat exchange, and antifreeze of the heat exchange liquid circuit and the antifreeze liquid circuit are the same as those of the first embodiment, and will not be described again here. Figure 5 As shown, an antifreeze liquid flow path outlet 104 is arranged on the left side of the bottom side of the heat exchanger 1, and an antifreeze liquid flow path inlet 103 is arranged on the right side. A heat exchange liquid flow path inlet 101 is arranged on the lower side of the right vertical side of the heat exchanger 1, and a heat exchange liquid flow path outlet 102 is arranged on the upper side. The heat exchange liquid flow path inlet 101 and the antifreeze liquid flow path inlet 103 are arranged adjacent to each other. That is, the antifreeze liquid flow path inlet 103 and the antifreeze liquid flow path outlet 104 adopt the same side bottom inlet and bottom outlet mode, and the heat exchange liquid flow path inlet 101 and the heat exchange liquid flow path outlet 102 adopt the same side bottom inlet and top outlet mode. However, it can also be that the heat exchange liquid flow path inlet 101 and the heat exchange liquid flow path outlet 102 adopt the same side bottom inlet and bottom outlet mode, and the antifreeze liquid flow path inlet 103 and the antifreeze liquid flow path outlet 104 adopt the bottom inlet and top outlet mode.

[0045] When the heat exchanger adopts the connection method of bottom inlet and bottom outlet on the same side, it is convenient for later maintenance, and it is also convenient for exhaust and drainage in later use. The antifreeze circuit is set in the heat exchanger to prevent the heat exchanger from freezing when exchanging heat in a low temperature environment. The antifreeze liquid flow path inlet is arranged adjacent to the heat exchange liquid flow path inlet, and the antifreeze liquid with high temperature at the antifreeze liquid flow path inlet can be used to antifreeze the heat exchange liquid flow path inlet that is easy to freeze, thereby reducing the antifreeze time and improving the antifreeze efficiency. Since heat exchange and antifreeze can be performed at the same time, it is possible to avoid the situation where heat exchange is stopped due to antifreeze, thereby improving the heat exchange efficiency of the heat exchanger.

[0046] <Fourth Embodiment>

[0047] In this embodiment, the arrangement, heat exchange, and antifreeze of the heat exchange liquid circuit and the antifreeze liquid circuit are the same as those of the first embodiment, and will not be described again here. Figure 6 As shown, an antifreeze liquid flow path outlet 104 is arranged on the left side of the bottom side of the heat exchanger 1, and an antifreeze liquid flow path inlet 103 is arranged on the right side, and a heat exchange liquid flow path inlet 101 and a heat exchange liquid flow path outlet 102 are arranged adjacent to the lower part of the right vertical side of the heat exchanger 1, wherein the heat exchange liquid flow path inlet 101 is arranged adjacent to the antifreeze liquid flow path inlet 103. That is, the antifreeze liquid flow path inlet 103 and the antifreeze liquid flow path outlet 104 adopt the same side bottom inlet and bottom outlet mode, and the heat exchange liquid flow path inlet 101 and the heat exchange liquid flow path outlet 102 adopt the same side bottom inlet and bottom outlet mode. However, it is also possible that the heat exchange liquid flow path inlet 101 and the heat exchange liquid flow path outlet 102 adopt the bottom-in and bottom-out method on the same side, and the antifreeze liquid flow path inlet 103 and the antifreeze liquid flow path outlet 104 adopt the bottom-in and bottom-out method on the same side, as long as the heat exchange liquid flow path inlet 101 and the antifreeze liquid flow path inlet 103 are arranged adjacent to each other.

[0048] When the heat exchanger adopts this connection method of bottom inlet and bottom outlet on the same side, it saves space and does not waste too much heat exchanger pipe material, which saves costs, is simple and convenient to install, and is also convenient for exhaust and drainage in the later use. The antifreeze circuit is set in the heat exchanger to prevent the heat exchanger from freezing when exchanging heat in a low temperature environment. The antifreeze liquid flow path inlet is set adjacent to the heat exchange liquid flow path inlet, and the heat exchange liquid flow path inlet that is easy to freeze can be antifreezed by the high-temperature antifreeze liquid at the antifreeze liquid flow path inlet, thereby reducing the antifreeze time and improving the antifreeze efficiency. Since heat exchange and antifreeze can be performed at the same time, it is possible to avoid the situation where heat exchange is stopped due to antifreeze, thereby improving the heat exchange efficiency of the heat exchanger.

[0049] <Fifth Embodiment>

[0050] In this embodiment, the arrangement, heat exchange and antifreeze of the heat exchange liquid circuit and the antifreeze liquid circuit are the same as those of the first embodiment, and will not be described again here. Figure 7 As shown, an antifreeze liquid flow path outlet 104 is provided at the left side of the bottom side of the heat exchanger 1, and an antifreeze liquid flow path inlet 103 is provided at the right side. A heat exchange liquid flow path outlet 102 is provided at the lower part of the left vertical side of the heat exchanger 1 adjacent to the antifreeze liquid flow path outlet 104, and a heat exchange liquid flow path inlet 101 is provided at the lower part of the right vertical side of the heat exchanger 1 adjacent to the antifreeze liquid flow path inlet 103. That is, the antifreeze liquid flow path inlet 103 and the antifreeze liquid flow path outlet 104 adopt the same side bottom inlet and bottom outlet mode, and the heat exchange liquid flow path inlet 101 and the heat exchange liquid flow path outlet 102 adopt the same side bottom inlet and bottom outlet mode. However, it is also possible that the heat exchange liquid flow path inlet 101 and the heat exchange liquid flow path outlet 102 adopt the bottom-in and bottom-out method on the same side, and the antifreeze liquid flow path inlet 103 and the antifreeze liquid flow path outlet 104 adopt the bottom-in and bottom-out method on the same side, as long as the heat exchange liquid flow path inlet 101 and the antifreeze liquid flow path inlet 103 are arranged adjacent to each other.

[0051] When the heat exchanger adopts this same-side bottom-in and bottom-out method, space is saved and too much heat exchanger pipe material will not be wasted, which saves costs, is simple and convenient to install, and is also convenient for exhaust and drainage in the later use. An antifreeze circuit is set in the heat exchanger to prevent the heat exchanger from freezing when exchanging heat in a low-temperature environment. The antifreeze liquid flow path inlet is arranged adjacent to the heat exchange liquid flow path inlet, and the heat exchange liquid flow path inlet that is easy to freeze can be antifreezed by the high-temperature antifreeze liquid at the antifreeze liquid flow path inlet, thereby reducing the antifreeze time and improving the antifreeze efficiency. Since heat exchange and antifreeze can be performed at the same time, it is possible to avoid the situation where heat exchange is stopped due to antifreeze, thereby improving the heat exchange efficiency of the heat exchanger.

[0052] <Sixth Embodiment>

[0053] In this embodiment, the arrangement, heat exchange, and antifreeze of the heat exchange liquid circuit and the antifreeze liquid circuit are the same as those of the first embodiment, and will not be described again here. Figure 8As shown, the antifreeze liquid flow path outlet 104 and the heat exchange liquid flow path outlet 102 are arranged adjacent to the left side of the bottom surface side of the heat exchanger 1, and the heat exchange liquid flow path inlet 101 and the antifreeze liquid flow path inlet 103 are arranged adjacent to the right side of the bottom surface side of the heat exchanger 1. The left and right positions of the antifreeze liquid flow path outlet 104 and the heat exchange liquid flow path outlet 102, and the left and right positions of the heat exchange liquid flow path inlet 101 and the antifreeze liquid flow path inlet 103 are not particularly limited here, as long as the heat exchange liquid flow path inlet 101 and the antifreeze liquid flow path inlet 103 are arranged adjacent to each other. That is, the heat exchange liquid flow path inlet 101 and the heat exchange liquid flow path outlet 102, and the antifreeze liquid flow path inlet 103 and the antifreeze liquid flow path outlet 104 adopt the same side bottom in and bottom out method.

[0054] When the heat exchanger adopts this connection method of bottom inlet and bottom outlet on the same side, it can save space and will not waste too much heat exchanger pipe material, save costs, and is simple and convenient to install. It is also convenient to exhaust and drain in the later use. The antifreeze circuit is set in the heat exchanger to prevent the heat exchanger from freezing when exchanging heat in a low temperature environment. The antifreeze liquid flow path inlet is arranged adjacent to the heat exchange liquid flow path inlet, and the heat exchange liquid flow path inlet that is easy to freeze can be antifreeze by using the antifreeze liquid with a high temperature at the antifreeze liquid flow path inlet, thereby reducing the antifreeze time and improving the antifreeze efficiency. Since heat exchange and antifreeze can be performed at the same time, it is possible to avoid the situation where heat exchange is stopped due to antifreeze, thereby improving the heat exchange efficiency of the heat exchanger.

[0055] According to the above embodiments, different antifreeze flow paths can be designed for the heat exchanger according to different on-site working conditions, which helps to quickly prevent freezing.

[0056] The above are only embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A heat exchanger, characterized in that: A heat exchange liquid flow path and an antifreeze liquid flow path are provided inside the heat exchanger. The heat exchanger is installed vertically when in use, and adopts a bottom-in-bottom-out connection mode on the same side. The inlet of the heat exchange liquid flow path and the inlet of the antifreeze liquid flow path are arranged at the end side of one vertical side surface of the heat exchanger. On another vertical side surface of the heat exchanger opposite to the one vertical side surface, the outlet of the heat exchange liquid flow path is arranged opposite to the inlet of the heat exchange liquid flow path, and the outlet of the antifreeze liquid flow path is arranged opposite to the inlet of the antifreeze liquid flow path. The heat exchanger also has: an antifreeze liquid circuit in which the antifreeze liquid circulates; and an antifreeze heater, which is used to heat the antifreeze liquid to increase the temperature of the antifreeze liquid, Wherein, the antifreeze fluid circuit comprises: the antifreeze flow path, the antifreeze defrosting the heat exchanger when the antifreeze flows through the antifreeze flow path, thereby reducing the temperature of the antifreeze; an antifreeze liquid inlet pipeline, which connects the inlet of the antifreeze liquid flow path with the outlet of the antifreeze heater, and is used to allow the antifreeze liquid with a raised temperature to flow to the heat exchanger; and an antifreeze liquid outlet pipeline, which connects the outlet of the antifreeze liquid flow path with the inlet of the antifreeze heater, and is used to allow the antifreeze liquid with a lowered temperature to flow to the antifreeze heater, The heat exchange liquid flow path and the antifreeze liquid flow path are independent of each other and are not interconnected.

2. The heat exchanger according to claim 1, characterized in that: have: a heat exchange fluid circuit in which a heat exchange fluid circulates; and A heat exchanger, wherein the heat exchange fluid exchanges heat with a heat medium in the heat exchanger, thereby reducing the temperature of the heat exchange fluid. Wherein, the heat exchange fluid circuit comprises: The heat exchange fluid flow path, when the heat exchange fluid flows through the heat exchange fluid flow path, heat is exchanged with the outside, so that the temperature of the heat exchange fluid increases; a heat exchange liquid inlet pipeline, which connects the inlet of the heat exchange liquid flow path with the outlet of the heat extractor, and is used to allow the heat exchange liquid with a lowered temperature to flow to the heat exchanger; and A heat exchange liquid outlet pipeline connects the outlet of the heat exchange liquid flow path with the inlet of the heat exchanger, and is used to allow the heat exchange liquid with increased temperature to flow to the heat exchanger.

3. The heat exchanger according to claim 2, characterized in that: The inlet of the heat exchange liquid flow path is arranged adjacent to the inlet of the antifreeze liquid flow path.

4. A heat exchanger, characterized in that: There are heat exchange liquid flow paths and antifreeze liquid flow paths inside. The heat exchanger is installed vertically when in use, and adopts a bottom-in and bottom-out connection method on the same side. The inlet and outlet of the antifreeze liquid flow path are arranged on the bottom side of the heat exchanger. The heat exchanger also has: an antifreeze liquid circuit in which the antifreeze liquid circulates; and an antifreeze heater, which is used to heat the antifreeze liquid to increase the temperature of the antifreeze liquid, Wherein, the antifreeze fluid circuit comprises: the antifreeze flow path, the antifreeze defrosting the heat exchanger when the antifreeze flows through the antifreeze flow path, thereby reducing the temperature of the antifreeze; an antifreeze liquid inlet pipeline, which connects the inlet of the antifreeze liquid flow path with the outlet of the antifreeze heater, and is used to allow the antifreeze liquid with a raised temperature to flow to the heat exchanger; and an antifreeze liquid outlet pipeline, which connects the outlet of the antifreeze liquid flow path with the inlet of the antifreeze heater, and is used to allow the antifreeze liquid with a lowered temperature to flow to the antifreeze heater, The heat exchange liquid flow path and the antifreeze liquid flow path are independent of each other and are not interconnected.

5. The heat exchanger according to claim 4, characterized in that: have: a heat exchange fluid circuit in which a heat exchange fluid circulates; and A heat exchanger, wherein the heat exchange fluid exchanges heat with a heat medium in the heat exchanger, thereby reducing the temperature of the heat exchange fluid. Wherein, the heat exchange fluid circuit comprises: The heat exchange fluid flow path, when the heat exchange fluid flows through the heat exchange fluid flow path, heat is exchanged with the outside, so that the temperature of the heat exchange fluid increases; a heat exchange liquid inlet pipeline, which connects the inlet of the heat exchange liquid flow path with the outlet of the heat extractor, and is used to allow the heat exchange liquid with a lowered temperature to flow to the heat exchanger; and A heat exchange liquid outlet pipeline connects the outlet of the heat exchange liquid flow path with the inlet of the heat exchanger, and is used to allow the heat exchange liquid with increased temperature to flow to the heat exchanger.

6. The heat exchanger according to claim 5, characterized in that The inlet of the heat exchange liquid flow path is arranged adjacent to the inlet of the antifreeze liquid flow path.

7. The heat exchanger according to claim 6, characterized in that The inlet of the heat exchange fluid flow path and the outlet of the heat exchange fluid flow path are arranged on a vertical surface of the heat exchanger.

8. The heat exchanger according to claim 7, characterized in that The inlet and outlet of the heat exchange fluid flow path are arranged adjacent to each other.

9. The heat exchanger according to claim 6, characterized in that The inlet of the heat exchange fluid flow path is arranged at a lower part of one vertical side surface of the heat exchanger, and the outlet of the heat exchange fluid flow path is arranged on another vertical side surface of the heat exchanger opposite to the one vertical side surface so as to face the inlet of the heat exchange fluid flow path.

10. The heat exchanger according to claim 6, characterized in that The inlet and outlet of the heat exchange fluid flow path are arranged on the bottom side.

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