Heating system with heat pump for internal installation

Abstract

A heat supply system for internal installation with a heat pump, the heat supply system comprising a first cabinet housing a heat pump module having a refrigeration circuit comprising an air-refrigeration fluid heat exchanger comprising at least two coils, the coils being disposed in the first cabinet, the heat supply system comprises a cabinet, a coil arranged in a V-shape and bifurcated upward, the coil defining at least one outer chamber relative to the V-shape and at least one inner chamber between the bifurcated portions of the V-shape within the cabinet, and the inner chamber communicating with the outer chamber only through the coil, and at least one voluteless radial fan, the fan is contained in the cavity above the coil pipe, and the fan is provided with an air inlet located in the inner cavity and an air outlet located in the upper cavity. The upper chamber is provided for air outlet connectors on three sides of the cabinet.

Description

Technical Field

[0001] This invention relates to a heating system with a heat pump for internal installation. The term "heating" should be understood in the context to include both typical functions of a heat pump, namely, both summer cooling and winter heating. Background Technology

[0002] In certain technical fields, known heat pump heating systems are installed on equipment used for heating or cooling buildings and / or for producing hot purified water. Such heat pump heating systems utilize a refrigerating fluid / external air exchanger as a heat source and a refrigerating fluid / water exchanger to thermally regulate the building's interior environment and heat purified water.

[0003] Similar systems are known, for example, from https: / / www.hoval.it / prodotti / belaria-pompe-di-calore-aria-acqua-installazione-interna / .

[0004] Typically, these systems are equipped with an integrated cabinet that includes all components of the equipment and is connected to separate external units, or includes an air-to-cooled gas heat exchanger and associated compressor. These components are then connected in turn to an expansion tank and a storage tank for the treated water, which are generally located in a separate environment.

[0005] The first disadvantage of the known system is that its overall size makes transportation and installation quite difficult. Another disadvantage is that the equipment available on the market is incomplete and requires additional components (external units) located outside the actual cabinet to complete the installation of functional components. Summary of the Invention

[0006] One object of the present invention is to provide a heating system with a heat pump for internal installation, which is structurally and functionally configured to overcome at least one disadvantage exhibited in the cited prior art.

[0007] Another object of the present invention is to provide a particularly compact heating system.

[0008] Another objective is to provide a heating system that can be added in a modular fashion, which includes everything the equipment needs to operate in its complete package.

[0009] These and other objectives, which will be better understood below, are achieved by means of a heating system with a heat pump for internal installation, which is designed and constructed according to the features mentioned in one or more of the appended claims.

[0010] In one embodiment of the invention, a heating system with a heat pump for internal installation is provided. The heating system includes a first cabinet housing a heat pump module having a refrigeration circuit comprising an air-refrigeration fluid heat exchanger. The air-refrigeration fluid heat exchanger includes at least two coils arranged in a V-shape and branching upwards. The coils define at least one external chamber relative to the V-shape and at least one internal chamber between the branching portions of the V-shape within the cabinet, with the internal chamber communicating with the external chamber only through the coils. This configuration allows for considerable improvement in the compactness of the heat pump, particularly in its vertical extension, and maximizes the extension of the coil surface area. Preferably, at least one volute-less radial fan is housed in a chamber located above the coils, the fan having an inlet in the internal chamber and an outlet in the upper chamber. This configuration advantageously utilizes the fan, which can provide airflow in all directions. Therefore, the discharge intake can be opened at a freely selectable location on the first cabinet. In particular, it is advantageous to pre-configure the air outlet by setting the chamber as an air outlet connection on three sides of the cabinet. Preferably, the three sides are the rear side and two lateral sides.

[0011] In an alternative embodiment, instead of a pair of coils arranged in a V-shape, the system includes at least one curved coil defining convex and concave sides, and defining at least one outer chamber and at least one inner chamber, respectively. Preferably, the inner chamber is at least partially surrounded by the concave side of the coil and communicates with the outer chamber only through the coil. In this case, according to a preferred configuration, at least one volute-less radial fan is housed in a chamber above the coil, the fan having an inlet in the inner chamber and an outlet in the upper chamber, wherein the upper chamber is provided with outlet connections on three sides of the cabinet.

[0012] In a preferred embodiment, the external chamber is also provided with air intake connections on three sides of the cabinet, and preferably, the three sides of the upper chamber-external chamber arrangement overlap. This facilitates system installation in confined spaces, allowing it to be placed laterally against a side wall or against a rear wall.

[0013] The installation of the heat pump module can be advantageously completed together with a second cabinet that houses the hot water purification module. The cabinet of the module is structurally independent and equipped with interconnecting devices to connect them to each other in a side-by-side alternating or stacked arrangement.

[0014] In one alternative embodiment of the invention, the side-by-side arrangement is positioned alternately on both sides.

[0015] Advantageously and preferably, the two modules have front surfaces of substantially the same size, and preferably, the front surfaces have substantially the same structure and configuration. Attached Figure Description

[0016] The features and advantages of the present invention will be better understood from the following detailed description of preferred embodiments of the invention, which are illustrated by way of non-limiting example with reference to the accompanying drawings, wherein: Figure 1 This is a longitudinal section view of the heat pump unit of the heat pump according to the present invention; Figure 2 yes Figure 1 A three-dimensional view of the heat pump unit, showing the ventilation connection of the heat pump unit; Figures 3 to 5 These are schematic diagrams showing either the isolated installation of the heat pump unit in the aforementioned figures, or the installation of the heat purification unit supplemented in the upper and lower or side-by-side positions. Figure 6 It is a three-dimensional schematic diagram showing the possible solutions for the heat pump unit and ventilation connection in the aforementioned figure; Figure 7 and Figure 8 yes Figure 4 A cross-sectional view of the invention; Figure 9 It shows Figure 7 A magnified view of the details; Figure 10 This is a 3D view of the heat pump unit, with the front and side panels removed. Figure 11 This is a three-dimensional schematic diagram of a variant design of the present invention; Figure 12 and Figure 13 They are Figure 11 The stereoscopic front view of the variant scheme and Figure 11 A top view showing the details of the variant scheme. Detailed Implementation

[0017] In the accompanying drawings, a heat pump unit, used alone or in combination with a hot water purification unit 2 to form a heat pump heating system 3 according to the invention, is labeled as 1.

[0018] The heating system will include two configurations: either only a heat pump unit or the same heat pump unit integrated with a hot water purification unit, where the hot water purification unit will be an additional component of the heating system.

[0019] The heat pump 1 includes a first cabinet 10, which houses a refrigeration circuit. The refrigeration circuit includes a compressor 4 with an air-refrigeration fluid heat exchanger 5, which includes at least two coils 6, 7 arranged in a V-shape branching upwards from the lower apex. A container 11 for collecting condensate is installed near the coils.

[0020] Coils 6 and 7 define at least one first chamber 12 located outside the V-shaped bifurcation and a second inner chamber 13 located between the bifurcations within the first cabinet 10. The two chambers 12 and 13 are arranged in the first cabinet so that they can communicate with each other solely by means of airflow passing through coils 6 and 7.

[0021] This coil configuration enables a considerable improvement in the compactness of the heat pump 1 (especially in its vertical expansion) and maximizes the area of ​​coils 6 and 7.

[0022] At least one radial fan 14 is housed in a third chamber located above the coils 6 and 7. This radial fan is preferably a volute-less type. The fan 14 is mounted such that its inlet is located in the inner chamber 13 relative to the V-bif and its outlet is located in the third chamber 15 above the coils, such that the airflow generated through the coils 6 and 7 is directed into the second chamber 13, drawn in by the fan 14, and directed into the third chamber 15.

[0023] This configuration allows the air outlet of the fan 14 to have potential omnidirectionality, which is advantageous for the fan. The fan allows for an air outlet direction at the vent of the third chamber 15, and the opening of the fan can be arbitrarily arranged in the first cabinet 10.

[0024] Figure 6 Three possible arrangements of the ventilation duct 16 are shown, with three different openings for the air inlet 17. The air outlet at the first cabinet 10 is provided by providing three interchangeable inlets 17 on the three sides 18a, 18b, and 18c of the cabinet within the upper third chamber 15. Preferably, the three sides are the rear side and two lateral sides. The rear side air inlet is preferably open when the lateral sides are temporarily closed by the removable insert 20.

[0025] Similarly, the first external chamber 12 is also provided for air intake connections on three sides of the cabinet via corresponding intake sockets 21, each intake socket 21 being suitable for alternating connections of air intake ducts (not shown). Preferably, the three sides of the arrangement formed by the upper chamber and the external chamber overlap, and the remaining two sides are temporarily closed by removable inserts 22.

[0026] The installation of the heat pump can be advantageously complemented by a hot water purification module 2, which includes a second cabinet 23 equipped with a storage tank 24, within which at least one water-to-water heat exchanger is located. The configuration of the hot water purification module is not the subject of this invention. In addition to the two expansion tanks for the heating circuit, the hot water purification module also includes two expansion tanks for the purification circuit and associated safety valves. The connection joints of these two circuits are marked 35a, 35b and 36a, 36b, respectively, and are preferably arranged on top of the third chamber 15 of the heat pump. In a preferred embodiment of the invention, whether the hot water purification unit is present alongside or only the heat pump unit is present, these two circuits can be arbitrarily configured via a three-way valve 37 controlled by an electronic panel 38 to allow the hot water purification flow and the hot water supply flow to cross-direction according to the most advantageous location of the pre-existing water pipe connections at the installation site, thereby guiding them to the left and right sides of the third chamber 15, or vice versa. The drain pipes 38 and 39 of the hot water purification circuit and the hot water supply circuit converge at the inlet of valve 37 and lead to their respective connectors 35a and 36a at the outlet of valve 37. The control of valve 37 determines the switching of its flow. The pipes leading to the return connectors 35b and 36b are connected together.

[0027] The first cabinet 10 and the second cabinet 23 of the two modules 1 and 2 are structurally independent and preferably both are constructed with a frame 25 (e.g., made of metal profiles). The frame 25 is provided with interconnecting devices 27, 28 to arrange the two modules in a side-by-side alternating or stacked manner. Figure 4 and Figure 5 They are connected to each other. This arrangement can be achieved using different connectors, for example, in Figure 9One example is shown. In this example, the interconnecting devices 27, 28 include a bracket 29 supporting a support 30, preferably of the vibration-damping type, on a frame 25. The support 30 has an extension 31 projecting from the bracket 29 to engage (e.g., in an upper position) with a hole or groove 32 formed in the frame 25 of the other module. In this way, the two modules are properly centered (e.g., in a stacked position), maintained in mutual positioning, and isolated from each other in terms of the transmission of any vibration. In a side-by-side position, the two modules can be interconnected by other means (e.g., connections such as screws and bolts). In an alternative embodiment of the invention, the side-by-side arrangement is positioned alternately on both sides.

[0028] Advantageously and preferably, the two modules have front surfaces 33 that are similar and preferably substantially identical in size, structural form and overall configuration.

[0029] In one variant design of the present invention (in...) Figures 11 to 13 Schematic illustration (without any frame), instead of a pair of coils arranged in a V-shape, the system includes at least one coil 50 folded into a C-shape, defining a convex side 51 and a concave side 52, and defining at least one external chamber 53 and at least one internal chamber 54 within the cabinet. Details similar to those in the previous example are indicated by the same reference numerals. Preferably, the internal chamber is at least partially surrounded by the concave side of the coil and communicates with the external chamber only through the coil. In this case, according to a preferred configuration, at least one volute-less radial fan 14 is housed in a third chamber 15 located above the coil 50, with its inlet entering the internal chamber 54 and its outlet entering the upper third chamber 15. In this case, the upper chamber 15 is also provided for outlet connections on three sides of the cabinet. This arrangement also optimizes the internal space of the system and, in particular, allows the compressor 55 to be alternately located in the internal chamber 54 or the external chamber 53, thereby optimally utilizing these chambers to accommodate the complete set of components required for heat pump operation.

[0030] Therefore, this invention achieves the proposed objectives and brings numerous advantages, including: - Compact size compared to other products on the market; - Embedded in a unit for hot water purification containing all the components required for the complete operation of the device; - The versatility in arranging ventilation connections on the three sides (rear or left and right sides) allows the heat pump to be alternately placed against the rear or side walls, which is beneficial for embedding in small spaces. - Compared to traditional technical solutions with separate external units, installers do not need to implement any refrigeration connections or liquid circulation connections between different modules of the heat pump.

[0031] Furthermore, the overall size of the system is significantly reduced compared to traditional technical solutions; no external units are installed and the total size of the two modules is only similar to that of the internal modules of a split heat pump.

[0032] Ultimately, the presence of two separate and complete units in each part of the system makes transportation easier.

Claims

1. A heating system with a heat pump for internal installation, the heating system comprising a first cabinet housing a heat pump module having a refrigeration circuit including an air-refrigeration fluid heat exchanger including at least two coils arranged in a V-shape and branching upwards, the coils defining at least one external chamber relative to the V-shape and at least one internal chamber between the branching portions of the V-shape within the cabinet, the internal chamber communicating with the external chamber only through the coils, the heating system further comprising at least one volute-less radial fan housed in a chamber above the coils, the volute-less radial fan having an inlet in the internal chamber and an outlet in the upper chamber, wherein... The chamber positioned at the top is provided with air outlet connections on three sides of the cabinet.

2. A heating system with a heat pump for internal installation, the heating system comprising a first cabinet housing a heat pump module having a refrigeration circuit including an air-refrigeration fluid heat exchanger including at least one curved coil defining a convex side and a concave side and defining at least one external chamber and at least one internal chamber in the cabinet, the internal chamber being at least partially surrounded by the concave side of the coil and communicating with the external chamber only through the coil, the heating system further comprising at least one volute-less radial fan housed in a chamber above the coil, the volute-less radial fan having an inlet in the internal chamber and an outlet in the upper chamber, wherein... The upper chamber is provided with air outlet connections on three sides of the cabinet.

3. The heating system according to claim 1 or 2, wherein, The external chamber is provided with air intake connections on three sides of the cabinet.

4. The heating system according to claim 3, wherein, The three sides of the ventilation arrangement structure of the upper chamber coincide with the three sides of the ventilation arrangement structure of the outer chamber.

5. The heating system according to one or more of the preceding claims, the heating system comprising a second cabinet housing a hot water purification module, wherein the cabinets of the heat pump module and the hot water purification module are structurally independent and provided with interconnecting devices to connect the hot water purification module and the heat pump module to each other in a side-by-side alternating or stacked arrangement.

6. The heating system according to claim 5, wherein, The first and second cabinets, which are side by side, are positioned alternately on both sides.

7. The heating system according to one or more of the preceding claims, wherein, The hot water purification module and the heat pump module both have front surfaces of substantially the same size.

8. The heating system according to claim 7, wherein, The front surface of the hot water purification module and the front surface of the heat pump module are essentially the same in form and structure.

9. The heating system according to one or more of the preceding claims, the heating system comprising a clean water circuit and a heating circuit, wherein the respective discharge connections of the clean water circuit and the heating circuit are configured via valves to allow the clean water circuit and the heating circuit to cross, thereby alternately directing the clean water circuit and the heating circuit to one side or the other side of the first cabinet.

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