Heat pump convenient to assemble

Abstract

The utility model discloses a heat pump convenient to assemble, which comprises a heat pump shell, an installation cavity is arranged in the heat pump shell, a refrigerating system and a buffer water tank are arranged in the installation cavity, and a water outlet and a water return port are arranged on the heat pump shell. The water outlet and the water return port are communicated with the mounting cavity; the water outlet is communicated with the buffer water tank through an eduction tube; the double-pipe heat exchanger comprises a heat exchange inner pipe and a heat exchange outer pipe, the heat exchange inner pipe is arranged in the heat exchange outer pipe in a penetrating mode, one end of the heat exchange inner pipe is communicated with the outlet end of the refrigerating system, and the other end of the heat exchange inner pipe is communicated with the inlet end of the refrigerating system; one end of the heat exchange outer pipe is communicated with the buffer water tank, and the other end of the heat exchange outer pipe is communicated with the water return port. According to the heat pump convenient to assemble, the buffer water tank is integrally installed in the installation cavity in the heat pump shell, pipeline connection is conducted in the installation cavity of the heat pump shell, and installation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pumps, in particular to a heat pump that is easy to assemble. Background Art

[0002] Heat pump is a highly efficient energy-saving device that fully utilizes low-grade thermal energy. Heat can be transferred spontaneously from a high-temperature object to a low-temperature object, but not spontaneously in the opposite direction. The working principle of a heat pump is a mechanical device that forces heat to flow from a low-temperature object to a high-temperature object in a reverse cycle. It consumes only a small amount of reverse cycle net work to obtain a large amount of heat supply, and can effectively utilize the low-grade thermal energy that is difficult to use to achieve energy saving.

[0003] When the existing heat pump is working, the water in the buffer water tank is pumped to the heating / cooling equipment under the action of the water pump. The heating / cooling equipment returns water to the heat exchanger for heat exchange and then returns to the buffer water tank for water recycling. Due to the setting of the buffer water tank, the water stored in the buffer water tank can enter the heating / cooling equipment when the heat pump is started, reducing the temperature difference between the heat pump and the outside when the heat pump is started, and reducing energy consumption. For example, when heating is needed, the hot water in the buffer water tank can enter the pipeline of the heating / cooling equipment through the buffer water tank for direct heat exchange and then return to the heat exchanger for heat exchange, and then enter the buffer water tank for circulation; when cooling, the low-temperature water in the buffer water tank can enter the pipeline of the refrigeration equipment for heat exchange and then flow back to the buffer water tank for circulation; in this way, when heating or cooling, the water stored in the buffer water tank flows in advance to reduce the temperature difference during the heat exchange process and reduce energy consumption.

[0004] However, in actual use, the buffer water tank and the heat pump host are generally assembled separately, and the pipeline connection between the buffer water tank and the heat pump host needs to be disassembled and assembled through different pipe joints, which makes the pipeline installation complicated and the installation volume of the entire heat pump system is relatively large. Utility Model Content

[0005] In order to overcome at least one defect of the above-mentioned prior art, the utility model provides a heat pump that is easy to assemble, wherein the buffer water tank is integrated into the installation cavity in the heat pump housing, and the pipeline connections are all in the installation cavity of the heat pump housing, which is easy to install.

[0006] The technical solution adopted by the utility model to solve the problem is:

[0007] A heat pump that is easy to assemble, comprising:

[0008] A heat pump housing, wherein a mounting cavity is provided in the heat pump housing, a refrigeration system and a buffer water tank are installed in the mounting cavity, and a water outlet and a water return port are provided on the heat pump housing; the water outlet and the water return port are both connected to the mounting cavity; the water outlet is connected to the buffer water tank through a lead-out pipe;

[0009] A shell and tube heat exchanger, the shell and tube heat exchanger includes an inner heat exchange tube and an outer heat exchange tube, the inner heat exchange tube is passed through the inner heat exchange tube, one end of the inner heat exchange tube is connected to the outlet end of the refrigeration system, and the other end of the inner heat exchange tube is connected to the inlet end of the refrigeration system; one end of the outer heat exchange tube is connected to the buffer water tank, and the other end of the outer heat exchange tube is connected to the return water port.

[0010] Furthermore, the heat exchange inner tube and the heat exchange outer tube are both wound around the outer peripheral wall of the buffer water tank.

[0011] Furthermore, a heating component is provided in the buffer water tank, and the heating component is used to heat the water in the buffer water tank.

[0012] Furthermore, the heat exchange outer pipe is connected to the water return port through a first water return pipe; and a water pump is provided on the first water return pipe.

[0013] Furthermore, a guide outlet is provided at the top of the buffer water tank, and the guide outlet is connected to the water outlet through the outlet pipe; a buffer cavity is provided at the top of the buffer water tank, and the guide outlet is at a height of the buffer water tank lower than or equal to that below the buffer cavity.

[0014] Furthermore, a water baffle and a water replenishment port are provided at the bottom end of the buffer water tank, a plurality of first water permeable holes are provided on the water baffle, and the water baffle is arranged above the water replenishment port; the water replenishment port is connected to a water replenishment pipe.

[0015] Furthermore, the water replenishment port is provided with a water guide cover and a water valve, the water guide cover is arranged at the water replenishment port, and the water guide cover is provided with a plurality of second water permeable holes.

[0016] Furthermore, the water outlet is connected to the inlet end of the external heating / cooling equipment through the water outlet pipe, and the water return port is connected to the outlet end of the external heating / cooling equipment through the second water return pipe.

[0017] To sum up, the utility model has the following technical effects: the buffer water tank is integrally assembled inside the heat pump housing and integrated into the heat pump main unit, so that the heat exchange medium conducting pipeline between the buffer water tank and the refrigeration system in the heat pump housing is also directly integrated in the heat pump housing. The pipeline inside the heat pump housing can also reduce the pipeline connection length, save the pipeline connection cost, reduce the complexity of pipeline installation caused by external assembly of pipelines, and simplify the assembly structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the heat pump structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the utility model in use state.

[0020] Among them, the meanings of the figure numbers are as follows: 10, heat pump housing; 11, installation cavity; 12, water outlet; 13, water return port; 20, buffer water tank; 21, guide outlet; 22, buffer cavity; 23, water baffle; 24, water guide cover; 25, water supply pipe; 31, heat exchange outer pipe; 32, heat exchange inner pipe; 40, first return water pipe; 50, guide pipe; 60, heating component; 70, refrigeration system; 80, water outlet pipe; 90, second return water pipe. DETAILED DESCRIPTION

[0021] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0024] See also Figure 1 and Figure 2 The utility model discloses a heat pump that is easy to assemble, including a heat pump housing and a shell and tube heat exchanger. An installation cavity 11 is provided in the heat pump housing, and a refrigeration system 70 and a buffer water tank 20 are installed in the installation cavity 11. A water outlet 12 and a water return port 13 are provided on the heat pump housing, and the water outlet 12 and the water return port 13 are both connected to the installation cavity 11; the water outlet 12 is connected to the buffer water tank 20 through a derivation pipe 50.

[0025] In addition, the shell and tube heat exchanger includes an inner heat exchange tube 32 and an outer heat exchange tube 31. The inner heat exchange tube 32 is inserted into the outer heat exchange tube 31. Specifically, one end of the inner heat exchange tube 32 is connected to the outlet end of the refrigeration system 70, and the other end of the inner heat exchange tube 32 is connected to the inlet end of the refrigeration system 70. One end of the outer heat exchange tube 31 is connected to the buffer water tank 20, and the other end of the outer heat exchange tube 31 is connected to the return water port 13.

[0026] On the basis of the above structure, when using the heat pump that is easy to assemble of the utility model, the main body of the buffer water tank 20 can be installed in the installation cavity 11 of the heat pump shell. Specifically, the installation cavity 11 of the buffer water tank 20 can be assembled through an installation bracket, or directly assembled with bolts, or fixed to the bottom wall of the installation cavity 11 by welding. In this way, the buffer water tank 20 can be assembled as a whole inside the heat pump shell and integrated inside the heat pump host. In this way, the heat exchange medium conducting pipeline between the buffer water tank 20 and the refrigeration system 70 in the heat pump shell is also directly integrated in the heat pump shell. The pipeline inside the heat pump shell can also reduce the pipeline connection length, save the pipeline connection cost, reduce the complexity of pipeline installation caused by the external assembly of pipelines, and simplify the assembly structure.

[0027] Specifically, during use, the heat exchange medium in the refrigeration system 70 inside the heat pump housing can enter the heat exchange inner tube 32, and the water flowing in the heat exchange outer tube 31 can undergo heat exchange. After the heat exchange, the water can enter the buffer water tank 20, and the water in the buffer water tank 20 can enter the outlet pipe 50 and be conducted to the water outlet 12. The water at the water outlet 12 can enter the heating / cooling equipment (such as a fan coil unit, etc.). After the heating / cooling equipment exchanges heat with the outside, the heating / cooling equipment can return water to the return water port 13 of the heat pump housing. The water at the return water port 13 can enter the heat exchange outer tube 31 of the shell and tube heat exchanger again, and undergo heat exchange with the heat exchange medium in the heat exchange inner tube 32 again, and utilize the waste heat of the return water for heat exchange. This reduces the heat exchange temperature difference and improves the utilization rate of thermal energy.

[0028] And some water can be stored in the buffer water tank 20. When the heat pump host is in use, the water in the buffer water tank 20 can be directly discharged to the heating / cooling equipment, and then returned to the heat exchange outer tube 31 and the heat exchange inner tube 32 for heat exchange of the medium, which can reduce the problem of high energy consumption caused by large temperature difference.

[0029] It should be noted that the refrigeration system can be implemented by a refrigerator in the prior art. Its specific structure and operating principle do not belong to the technical content protected by this application and will not be described in detail here.

[0030] Furthermore, the inner heat exchange tube 32 and the outer heat exchange tube 31 in this embodiment are both wrapped around the outer peripheral wall of the buffer water tank 20, so that the shell and tube heat exchanger can be wrapped around the outer peripheral wall of the buffer water tank 20. Since a certain amount of water is stored in the buffer water tank 20, the heat dissipated on the outer surface of the heat exchange outer tube 31 can also be absorbed by the outer peripheral wall of the buffer water tank 20, and then absorbed by the water inside the buffer water tank 20, which can improve heat utilization.

[0031] In addition, the heat exchange inner tube 32 and the heat exchange outer tube 31 are both arranged in a coiled and surrounded manner, which can increase the heat exchange area and improve the heat exchange efficiency.

[0032] Furthermore, in order to provide a heating component 60 in the buffer water tank 20, the heating component 60 is used to heat the water in the buffer water tank 20 during heating. When the heat pump is just started, the water in the buffer water tank 20 can be heated by the heating component 60 so that the water in the buffer water tank 20 has a certain temperature. The water in the buffer water tank 20 can directly enter the heating / cooling equipment to exchange heat with the outside world, and then the return water of the heating / cooling equipment enters the heat exchange outer tube 31 of the shell and tube heat exchanger to exchange heat with the heat exchange medium in the heat exchange inner tube 32, thereby reducing the heat exchange temperature difference and reducing energy consumption.

[0033] Furthermore, the heat exchange outer pipe 31 is connected to the water return port 13 via a first water return pipe 40; a water pump is provided on the first water return pipe 40, so that the water pump on the first water return pipe 40 can be started to provide water return power, and the water return efficiency is higher.

[0034] Furthermore, a guide outlet 21 may be provided at the top of the buffer water tank 20, and the guide outlet 21 is connected to the water outlet 12 through a guide pipe 50. In addition, a buffer cavity 22 may be provided at the top of the buffer water tank 20, and the guide outlet 21 may be lower than or equal to the bottom of the buffer cavity 22 at the height of the buffer water tank 20. That is, the water level of the buffer water tank 20 may be flush with the guide outlet 21 or lower than the guide outlet 21, so that the top of the buffer water tank 20 may always have a certain buffer cavity 22 used as a buffer space, which may reduce the damage to the buffer water tank 20 caused by thermal expansion and contraction of water.

[0035] Furthermore, a water baffle 23 and a water replenishment port may be provided at the bottom end of the buffer water tank 20, the water baffle 23 may be provided with a plurality of first water permeable holes, and the water baffle 23 may be provided above the water replenishment port, and a water replenishment pipe 25 may be connected to the water replenishment port. In this way, when there is insufficient water in the buffer water tank 20, that is, when the return water volume is insufficient, the water can be introduced into the water replenishment port through the water replenishment pipe 25 to replenish the buffer water tank 20.

[0036] Since a water baffle 23 is provided above the water replenishment port, the gap between the water baffle 23 and the water replenishment port can provide a water replenishment buffer cavity 22. The water flow entering through the water replenishment port can pass through the multiple first water permeable holes on the water baffle 23, dispersed and mixed with the water in the buffer water tank 20, increasing the mixing surface between the water introduced by the water replenishment pipe 25 and the water in the buffer water tank 20, improving the mixing surface, and at the same time slowing down the water flow speed. Therefore, the water introduced by the water replenishment pipe 25 can be mixed with the water buffer in the buffer water tank 20, preventing the water flow from being introduced too quickly and causing a sudden change in the water temperature in the buffer water tank 20.

[0037] More specifically, a water guide cover 24 and a water valve may be provided at the water replenishment port. The water guide cover 24 is provided at the water replenishment port, and a plurality of second water permeable holes are provided on the water guide cover 24. In this way, the amount of replenishment water can be controlled by opening or closing the water valve. The plurality of second water permeable holes provided on the water guide cover 24 at the water replenishment port can also slow down the water flow introduction speed at the water replenishment port position, and can also disperse the replenishment water flow to achieve the first layer of slow flow at the water replenishment port position. The water flow entering the bottom end of the buffer water tank 20 is evenly mixed with the water flow in the buffer water tank 20 at the baffle 23 position to achieve the second slow flow, thereby preventing the water flow from being introduced too quickly and causing a sudden change in the water temperature in the buffer water tank 20.

[0038] Furthermore, in this embodiment, the water outlet 12 can be connected to the water outlet pipe 80, and then the water outlet pipe 80 is connected to the inlet end of the external heating / cooling device, and the second water return pipe 90 is connected to the water return port 13, and is connected to the outlet end of the external heating / cooling device through the second water return pipe 90, so as to facilitate the connection between the heat pump host and the external heating / cooling device. Of course, the water outlet pipe 80 is connected to the water outlet 12 through a pipe joint, and the second water return pipe 90 is also connected to the water return port 13 through a pipe joint, which is convenient for disassembly and assembly.

[0039] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A heat pump that is easy to assemble, It is characterized in that include, A heat pump housing, wherein a mounting cavity is provided in the heat pump housing, a refrigeration system and a buffer water tank are installed in the mounting cavity, and a water outlet and a water return port are provided on the heat pump housing; the water outlet and the water return port are both connected to the mounting cavity; the water outlet is connected to the buffer water tank through a lead-out pipe; A shell and tube heat exchanger, the shell and tube heat exchanger includes an inner heat exchange tube and an outer heat exchange tube, the inner heat exchange tube is passed through the inner heat exchange tube, one end of the inner heat exchange tube is connected to the outlet end of the refrigeration system, and the other end of the inner heat exchange tube is connected to the inlet end of the refrigeration system; one end of the outer heat exchange tube is connected to the buffer water tank, and the other end of the outer heat exchange tube is connected to the return water port.

2. The heat pump according to claim 1, which is easy to assemble. It is characterized in that The inner heat exchange tube and the outer heat exchange tube are both wound around the outer peripheral wall of the buffer water tank.

3. The heat pump according to claim 1, It is characterized in that A heating component is provided in the buffer water tank, and the heating component is used to heat the water in the buffer water tank.

4. The heat pump according to claim 1, It is characterized in that The heat exchange outer pipe is connected to the water return port through a first water return pipe; a water pump is provided on the first water return pipe.

5. The heat pump according to claim 1, It is characterized in that A guide outlet is provided at the top of the buffer water tank, and the guide outlet is connected to the water outlet through an outlet pipe; a buffer cavity is provided at the top of the buffer water tank, and the guide outlet is at a height of the buffer water tank lower than or equal to that below the buffer cavity.

6. The heat pump according to claim 1, It is characterized in that The bottom end of the buffer water tank is provided with a water baffle and a water replenishment port, the water baffle is provided with a plurality of first water permeable holes, and the water baffle is arranged above the water replenishment port; the water replenishment port is connected with a water replenishment pipe.

7. The heat pump according to claim 6, which is easy to assemble. It is characterized in that The water replenishment port is provided with a water guide cover and a water valve. The water guide cover is arranged at the water replenishment port, and a plurality of second water permeable holes are arranged on the water guide cover.

8. A heat pump that is easy to assemble according to any one of claims 1 to 7, It is characterized in that The water outlet is connected to the inlet end of the external heating / cooling equipment through the water outlet pipe, and the water return port is connected to the outlet end of the external heating / cooling equipment through the second water return pipe.

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